CN201138957Y - Brake of pruning machine - Google Patents
Brake of pruning machine Download PDFInfo
- Publication number
- CN201138957Y CN201138957Y CNU2007201927481U CN200720192748U CN201138957Y CN 201138957 Y CN201138957 Y CN 201138957Y CN U2007201927481 U CNU2007201927481 U CN U2007201927481U CN 200720192748 U CN200720192748 U CN 200720192748U CN 201138957 Y CN201138957 Y CN 201138957Y
- Authority
- CN
- China
- Prior art keywords
- gear
- eccentric wheel
- shift fork
- wheel cover
- lining
- 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
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Abstract
The utility model relates to a brake device of a pruning machine, which comprises a gear bushing, a gear, an eccentric wheel sleeve, a dish-shaped spring, a retaining ring and a shifting fork, wherein, the eccentric wheel sleeve is inserted into the through hole of the gear bushing and extends out of the gear bushing, the gear and the dish-shaped spring are sleeved at the front end part of the gear bushing in sequence, friction plates are respectively arranged on the front and rear head faces of the gear, and the retaining ring is clipped into the groove of the gear bushing and generates axial pressure to the dish-shaped spring. The brake device is characterized in that a transmission block, and a roller which adopts interference fit with the inner wall of the gear bushing are arranged in the middle rear end wall of the shifting fork, the transmission block is sleeved at the front end part of the eccentric wheel sleeve, a wound shaped spring check seat is connected on the front head face of the shifting fork through a wound spring used for generating torque force, and the wound spring check seat is also fixed at the front end part of the eccentric wheel sleeve. Compared with the prior art, the brake device has the advantages that the transmission block is adopted for transmission connection and matched with the roller for interference arrangement, the functions of braking, staring and unloading of the shifting fork can be rapidly accomplished, the overall structure is simple, and the running effect is good.
Description
Technical field
The utility model relates to a kind of pruner brake gear, relates in particular to a kind of pruner brake gear that has offloading functions again.
Background technology
Pruner has very high operation requirement and safety requirements to brake gear, though traditional braking control device is easy to operate, the braking after can stop complex structure rapidly, and there is not unloading function, in case shrub and hedge trimmer are stuck by hard thing, very easily burn motor, safety is not high relatively.
The applicant has obtained Chinese utility model patent: ZL200520069220.6 for this reason, " a kind of brake gear of pruner " (publication number: CN2768422Y) is disclosed, this patent comprises gear, eccentric wheel cover, brake lever, torsion spring, shift fork, lining, it is characterized in that also comprising friction plate, friction plate, disk spring and back-up ring, torsion spring one end is fastenedly connected the eccentric wheel cover, in the insertion lining, other end spring steel wire inserts in the shift fork hole, friction plate, gear, friction plate, disk spring are inserted in lining successively, block and keep certain axial compressive force with back-up ring.Blocked by hard thing when pruner is worked or suffered external force when excessive, because lining that this moment, external force formed greater than disk spring pressure and the frictional force between the gear, lining and gear skid, thereby reach the unloading purpose.
The utility model content
Technical problem to be solved in the utility model is that a kind of pruner brake gear that brakes rapidly, has good offloading functions is provided in addition at the above-mentioned state of the art.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of pruner brake gear, comprise the gear lining, gear, the eccentric wheel cover, disk spring, back-up ring and shift fork, described eccentric wheel cover is inserted in the gear lining through hole and stretches out the gear lining, described gear lining leading section is arranged with gear and disk spring successively, the rear and front end face of described gear is respectively equipped with friction plate, described back-up ring snaps in gear lining groove and disk spring is produced axial compressive force, described shift fork is located at eccentric wheel cover leading section, after having brake lever and fall, described shift fork can stop shift fork to continue the block of motion, but it is characterized in that the drive block that is provided with in the aft bulkhead in the described shift fork and the roller of gear lining inwall interference fit, this drive block is sheathed on the eccentric wheel cover leading section, described shift fork front end face is connected with disc spring by one in order to the disc spring that produces torsion and ends seat, and this disc spring ends seat and also is fixed in eccentric wheel cover leading section.
As preferentially, described drive block is fixedlyed connected by flat key with eccentric wheel cover leading section.Also can adopt in the prior art other fixedly connected mode to substitute.
For reducing friction, also be provided with locating pad between described eccentric wheel cover and the gear lining.
As preferentially, described drive block adopts the hexagonal drive block, is respectively equipped with six rollers in six openings of described shift fork rear end sidewall.
Compared with prior art, advantage of the present utility model is: the employing drive block is in transmission connection and cooperates roller to realize clutch, and shift fork brake, startup and offloading functions are finished rapidly, and total is provided with simply, and operational effect is good.
Description of drawings
Fig. 1 is the three-dimensional decomposition assembling figure of embodiment.
Fig. 2 is the embodiment amplification view.
Fig. 3 is unloading back amplification view.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment: with reference to illustrated in figures 1 and 2, the pruner brake gear in the present embodiment comprises that gear lining 3, gear 5, eccentric wheel cover 1, disk spring 7, back-up ring 8, shift fork 1 and disc spring end seat 10.
Back-up ring 8 snaps in gear lining 3 grooves and disk spring 7 is produced axial compressive force, and shift fork 13 is located at eccentric wheel and is overlapped 1 leading section, and shift fork 13 has block 131, and this block 131 can stop shift fork 13 to continue motion after brake lever 11 fell.
Drive block 9 that is provided with in the aft bulkhead in the shift fork 13 and roller 14, and this drive block 9 adopts the hexagonal drive block, it overlaps 1 leading section with eccentric wheel fixedlys connected by flat key 15,
But this roller 14 totally six all with gear lining 3 inwall interference fit, be located at respectively in six openings of shift fork rear end sidewall, shift fork 13 front end faces are connected with disc spring by one in order to the disc spring 12 that produces torsion and end seat 10, and this disc spring ends seat 10 and also is fixed in eccentric wheel and overlaps 1 leading section.
Operation principle:
After starting pruner, motor driven gear 5 rotates, at disk spring 7, under the effect of friction plate 4 and friction plate 6, gear 5 driven gear linings 3 rotate, because the effect of disc spring 12 torsion moves six rollers 14 on the shift fork 13 on the inclined-plane of drive block 9, shift fork 13 like this, drive block 9 is in the interference connection status all the time with gear lining 3, because of eccentric wheel cover 1 is connected by flat key 15 with drive block 9, so when 3 rotations of gear lining, pass through shift fork 13, drive block 9, six rollers 14, disc spring 12 actings in conjunction drive eccentric wheel cover 1 and rotate, and eccentric wheel cover 1 rotates and drives the pruner blade work.
When pruner brakes, brake lever 11 falls, snap in the block 131 on the shift fork 13, shift fork 13 is stopped operating, because disc spring 12 effects make six rollers 14 on the shift fork 13 move down to the inclined-plane of drive block 9, shift fork 13, drive block 9 are located disengaged position all the time with gear lining 3 like this, and eccentric wheel cover 1 is quit work, and this moment is owing to action of inertia gear 5 is still rotating.
As shown in Figure 3, when pruner is worked by hard thing when stuck or external force is excessive, when external force greater than because during the frictional force of disk spring 7 pressure in gear 5 and 3 formation of gear lining, gear 5 and gear lining 3 just slide mutually, reach the purpose of unloading.
Claims (4)
1, a kind of pruner brake gear, comprise gear lining (3), gear (5), eccentric wheel cover (1), disk spring (7), back-up ring (8) and shift fork (13), described eccentric wheel cover (1) is inserted in gear lining (3) through hole and stretches out gear lining (3), described gear lining (3) leading section is arranged with gear (5) and disk spring (7) successively, the rear and front end face of described gear (5) is respectively equipped with friction plate (4,6), described back-up ring (8) snaps in gear lining (3) groove and disk spring (7) is produced axial compressive force, described shift fork (13) is located at eccentric wheel cover (1) leading section, described shift fork (13) has the block (131) that can stop shift fork (13) continuation motion after brake lever (11) falls, it is characterized in that the drive block (9) that is provided with in the aft bulkhead in the described shift fork (13) and gear lining (3) but the roller (14) of inwall interference fit, this drive block (9) is sheathed on eccentric wheel cover (1) leading section, described shift fork (13) front end face is connected with disc spring by one in order to the disc spring (12) that produces torsion and ends seat (10), and this disc spring ends seat (10) and also is fixed in eccentric wheel cover (1) leading section.
2, pruner brake gear according to claim 1 is characterized in that described drive block (9) fixedlys connected by flat key (15) with eccentric wheel cover (1) leading section.
3, pruner brake gear according to claim 1 is characterized in that also being provided with locating pad (2) between described eccentric wheel cover (1) and the gear lining (3).
4, pruner brake gear according to claim 1 is characterized in that described drive block (9) adopts the hexagonal drive block, is respectively equipped with six rollers (14) in six openings of described shift fork (13) rear end sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201927481U CN201138957Y (en) | 2007-11-30 | 2007-11-30 | Brake of pruning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201927481U CN201138957Y (en) | 2007-11-30 | 2007-11-30 | Brake of pruning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201138957Y true CN201138957Y (en) | 2008-10-29 |
Family
ID=40066677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201927481U Expired - Fee Related CN201138957Y (en) | 2007-11-30 | 2007-11-30 | Brake of pruning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201138957Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102550307A (en) * | 2012-01-06 | 2012-07-11 | 浙江亚特电器有限公司 | Mechanical brake structure of pruning scissors |
| CN103141317A (en) * | 2013-03-28 | 2013-06-12 | 天佑电器（苏州）有限公司 | Blade quick-changing mechanism for gardening cutting tool |
| CN103181303A (en) * | 2011-12-31 | 2013-07-03 | 侯巧生 | Electric high-branch chain saw |
| CN103348874A (en) * | 2013-07-23 | 2013-10-16 | 宁波创跃园林工具有限公司 | Novel pruner |
| CN103782813A (en) * | 2014-01-17 | 2014-05-14 | 宁波爱乐吉电动工具有限公司 | Electric pruning shears |
-
2007
- 2007-11-30 CN CNU2007201927481U patent/CN201138957Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103181303A (en) * | 2011-12-31 | 2013-07-03 | 侯巧生 | Electric high-branch chain saw |
| CN103181303B (en) * | 2011-12-31 | 2016-01-20 | 侯巧生 | A kind of electric high-branch chain saw |
| CN102550307A (en) * | 2012-01-06 | 2012-07-11 | 浙江亚特电器有限公司 | Mechanical brake structure of pruning scissors |
| CN102550307B (en) * | 2012-01-06 | 2013-12-18 | 浙江亚特电器有限公司 | Mechanical brake structure of pruning scissors |
| CN103141317A (en) * | 2013-03-28 | 2013-06-12 | 天佑电器（苏州）有限公司 | Blade quick-changing mechanism for gardening cutting tool |
| CN103141317B (en) * | 2013-03-28 | 2014-12-31 | 天佑电器（苏州）有限公司 | Blade quick-changing mechanism for gardening cutting tool |
| CN103348874A (en) * | 2013-07-23 | 2013-10-16 | 宁波创跃园林工具有限公司 | Novel pruner |
| CN103348874B (en) * | 2013-07-23 | 2015-04-22 | 宁波创跃园林工具有限公司 | Novel pruner |
| CN103782813A (en) * | 2014-01-17 | 2014-05-14 | 宁波爱乐吉电动工具有限公司 | Electric pruning shears |
| CN103782813B (en) * | 2014-01-17 | 2015-12-09 | 宁波爱乐吉电动工具有限公司 | Electric shrub and hedge trimmer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: NINGBO XIECHENG POWER TOOLS CO., LTD. Assignor: Shen Gaoming Contract fulfillment period: 2008.11.10 to 2013.11.9 Contract record no.: 2009330001841 Denomination of utility model: Brake of pruning machine Granted publication date: 20081029 License type: Exclusive license Record date: 20090805 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.10 TO 2013.11.9; CHANGE OF CONTRACT Name of requester: NINGBO XIECHENG POWER TOOLS CO.,LTD. Effective date: 20090805 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20131130 |