CN201854578U - Handheld pruning scissors - Google Patents
Handheld pruning scissors Download PDFInfo
- Publication number
- CN201854578U CN201854578U CN2010205116622U CN201020511662U CN201854578U CN 201854578 U CN201854578 U CN 201854578U CN 2010205116622 U CN2010205116622 U CN 2010205116622U CN 201020511662 U CN201020511662 U CN 201020511662U CN 201854578 U CN201854578 U CN 201854578U
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- gear
- planetary
- hand
- hedge trimmer
- box
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Abstract
The utility model provides handheld pruning scissors, which comprises a fixed blade fixed on a body, a moving blade capable of opening and closing reciprocally relative to the fixed blade, a driving part connected with the moving blade, a gear box and a motor. The gear box comprises a gear set capable of switching between at least two meshing gears. Users can select a high-speed low torsion working state or a low-speed high torsion working state, so that working efficiency of the pruning scissors and pruning capacity are improved, and working time of the pruning scissors after being charged each time is prolonged.
Description
Technical field
The utility model relates to a kind of pruner of the electric tool that is used for the gardens class, particularly a kind of hand-held.
Background technology
The hand-held pruner in practical work process, can run into be sheared material have slightly have thin, situations such as working condition faster or slower, wish when shearing thick material that the machine works frequency is slow and output strength is bigger, and wish that the machine works frequency is very fast when shearing tiny material and output strength is less to improve the working time that machine once charges.
Existing pruner has only a kind of mode of operation, can not adjust working condition at being sheared the material difference, does not give full play to the efficiency that pruner itself can provide.
Summary of the invention
At the defective that above-mentioned prior art exists, the utility model provides a kind of hand-held shrub and hedge trimmer of changeable shear rate.
For achieving the above object, the utility model is by the following technical solutions:
A kind of hand-held shrub and hedge trimmer, comprise the ledger-plate that is fixed in fuselage, with respect to ledger-plate back and forth knife section, the drive part that is connected with knife section, gear-box and the motor of opening and closing, wherein, described gear-box comprises switchable gear train between two engagement gears at least.
Further, described changeable gear train comprises first order planetary gearsets, second level planetary gearsets and the third level planetary gearsets that is in transmission connection in proper order along the output shaft direction of described motor.
Further, described first order planetary gearsets comprises first planetary gear with the external toothing of motor output shaft gear, first central gear that is connected with first planetary gear and with first planetary gear in first ring gear that meshes, described second level planetary gearsets comprises second planetary gear with the first central gear external toothing, second central gear that is connected with second planetary gear and with second planetary gear in second ring gear that meshes, described third level planetary gearsets comprises the third line star gear with the second central gear external toothing, the 3rd central gear that is connected with the third line star gear and with the third line star gear in the 3rd ring gear that meshes.
Further, described first central gear have be used for the small end of described second planetary gear external toothing part and be used for described second ring gear in the big end parts that meshes.
Further, described second ring gear selectively be positioned on the primary importance that meshes with second planetary gear or the second place that meshes with second planetary gear and the big end parts of first central gear simultaneously on,
Further, on described primary importance, the relative gear box casing of described second ring gear is circumferentially fixing, and on the described second place, described second ring gear can circumferentially be sleeved in the housing of described gear-box rotationally.
Further, the outer circumference surface of described second ring gear is provided with the grafting tooth, and the inner walls of described gear-box is provided with the inserting groove with described grafting tooth coupling.
Further, described gear-box is provided with the shifting part that described second ring gear is moved outward between the described primary importance and the second place.
Further, the outer circumference surface of described second ring gear is provided with circumferential groove, and the two ends of described shifting part are passed respectively and are located at the hole on the gear-box and are fitted in the described circumferential groove.
Further, described drive part comprise the bevel gear that is connected with described gearbox output shaft, with the awl fluted disc of described bevel gear engagement, described awl fluted disc is connected with described knife section.
By adopting above technical scheme, hand-held shrub and hedge trimmer of the present utility model can be selected at a high speed low torsion duty or the high torsion duty of low speed for use according to the difference that is sheared material, improve the operating efficiency and the shear ability of machine, prolong the working time that machine once charges.
Description of drawings
Fig. 1 is the schematic diagram of hand-held shrub and hedge trimmer of the present utility model;
Fig. 2 is the schematic diagram of inner gear of the gear box group, and wherein second ring gear of second level planetary gearsets is on the primary importance that meshes with second planetary gear, is connected with inserting groove on the gear box casing by the grafting tooth to be fixed;
Fig. 3 is the schematic diagram of inner gear of the gear box group, and wherein second ring gear of second level planetary gearsets is in simultaneously on the second place with second planetary gear and the big end parts engagement of first central gear;
Fig. 4 is the explosive view that can mesh the gear train that switches between gear in the gear-box in difference.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
As shown in Figure 1, schematic diagram for these practical hand-held shrub and hedge trimmer that are used for the vegetation pruning, mainly comprise a ledger-plate 2 and the knife section 3 that can carry out reciprocal opening and closing campaign with respect to ledger-plate 2 that is fixed in fuselage 1, knife section 3 is connected to and drives and control section 4, change gear box 5 and motor M etc.Knife section 3 is back and forth opening and closing under the acting in conjunction of driving and control section, and the opening and closing frequency of its relative ledger-plate 2 is by the speed decision of the output shaft of gear-box 5, and the branch of dissimilar and thickness etc. is sheared in realization.
As Fig. 2, shown in Figure 3, the gear-box 5 in the utility model comprises that mainly change-speed gearing group, speed change switch driving lever 51, gear box casing 45,45 ' and part such as output shaft 40.The change-speed gearing group has the third-level planetary tooth to slow down, and is connected with first order planetary gearsets, second level planetary gearsets and third level planetary gearsets in proper order along the output shaft direction Y of motor.First order planetary gearsets comprise with first planetary gear 11 of motor output shaft gear 10 external toothings, first central gear 13 that is connected with first planetary gear 11 and with first planetary gear 11 in first ring gears 12 of engagement; Second level planetary gearsets comprise with second planetary gear 21 of first central gear, 13 external toothings, second central gear 23 that is connected with second planetary gear 21 and with second planetary gear 21 in second ring gears 22 of engagement; Third level planetary gearsets comprises and the third line star gear 31 of second central gear, 23 external toothings, the 3rd central gear 33 that is connected with the third line star gear 31 and and the third line star gear 31 interior the 3rd ring gears 32 that mesh.
Gear train in the said gear case 5 can switch between two engagement gears of three grades of slow down output and double reduction outputs, referring to Fig. 2, second ring gear 22 of second level planetary gearsets is on the primary importance that meshes with second planetary gear 21, on this position, second ring gear, 22 relative gear-boxes 5 can not be connected on the gear box casing 45 with relatively rotating, make second ring gear 22, second planetary gear 21 and the second centre tooth gear 23 form planet circular system, whole gear train becomes three grades of decelerations, planetary gearsets at different levels all participate in engagement, and its position of slowing down engagement is respectively: the position of motor output shaft gear 10 and 11 external toothings of first planetary gear, the position of the position of first central gear 13 and the second new gear external toothing and second central gear 23 and 31 external toothings of the third line star gear.At this moment, gear-box drives bevel gear 41 with the big torsion of low speed, form a gear pair by bevel gear 41 and awl fluted disc 42, drive knife section 3 work by awl fluted disc 42 again, realize to slow down and commutation and realize moving back and forth, be used to shear and require speed slowly but thicker or harder branch in conjunction with Hall 44 and magnet 43.
Referring to Fig. 3, second ring gear 22 of second level planetary gearsets is in simultaneously on the second place with second planetary gear 21 and 13 engagements of first central gear, on this position, second ring gear, 22 relative gear-boxes 5 are sleeved in the gear box casing 45 rotationally, make second ring gear 22, second planetary gear 21 and the second centre tooth gear 23 form an integral body, whole gear train becomes double reduction, and its position of slowing down engagement is respectively: the position of the position of motor output shaft gear 10 and 11 external toothings of first planetary gear and second central gear 23 and 31 external toothings of the third line star gear.At this moment, gear-box drives bevel gear 41 with at a high speed low torsion, is used to shear the branch that requires speed fast but tiny or softer.
As shown in Figure 4, first central gear 13 be provided be used for the small end part 131 of second planetary gear, 21 external toothings and be used for and second ring gear 22 in the big end parts 132 of engagement; Second ring gear, 22 outer circumference surfaces are provided with grafting tooth 221 and circumferential groove 222, and can be along arrow D1 by speed change switching driving lever 51, the direction of D2 (output shaft direction) moves between the above-mentioned primary importance and the second place, when it is positioned at primary importance, grafting tooth 221 is plugged in the inserting groove 53 that gear box casing 45 inwalls are provided with and circumferentially fixing, in the time of on the second place, grafting tooth 221 breaks away from inserting groove 53 and makes 22 whiles of second ring gear and second planetary gear 21 and first central gear 13 mesh, and second ring gear 22 is used for being fixed in second planetary gear 21 on first central gear 13 and rotates with first central gear 13 at this moment; Switching the hole 52 that driving lever 51 is located at outside the gear-box 5 and its two ends are passed on the gear box casing 45 rabbets respectively in the circumferential groove 222.
When shrub and hedge trimmer when fast state is worked, when promptly second ring gear is positioned at primary importance, knife section was finished the time of once shearing (opening and closing) between 1.3～1.6 seconds, when shrub and hedge trimmer are worked under lower-speed state, when promptly second ring gear was positioned at the second place, knife section is finished and once sheared (opening and closing) time was between 1.6～2.0 seconds.
Claims (10)
1. hand-held shrub and hedge trimmer, comprise the ledger-plate that is fixed in fuselage, with respect to ledger-plate back and forth knife section, the drive part that is connected with knife section, gear-box and the motor of opening and closing, it is characterized in that: described gear-box comprises switchable gear train between two engagement gears at least.
2. hand-held shrub and hedge trimmer according to claim 1 is characterized in that: described switchable gear train comprises first order planetary gearsets, second level planetary gearsets and the third level planetary gearsets that is in transmission connection in proper order along the output shaft direction of described motor.
3. hand-held shrub and hedge trimmer according to claim 2, it is characterized in that: described first order planetary gearsets comprises first planetary gear with the external toothing of motor output shaft gear, first central gear that is connected with first planetary gear and with first planetary gear in first ring gear that meshes, described second level planetary gearsets comprises second planetary gear with the first central gear external toothing, second central gear that is connected with second planetary gear and with second planetary gear in second ring gear that meshes, described third level planetary gearsets comprises the third line star gear with the second central gear external toothing, the 3rd central gear that is connected with the third line star gear and with the third line star gear in the 3rd ring gear that meshes.
4. hand-held shrub and hedge trimmer according to claim 3 is characterized in that: described first central gear have be used for the small end of described second planetary gear external toothing part and be used for described second ring gear in the big end parts that meshes.
5. hand-held shrub and hedge trimmer according to claim 4 is characterized in that: described second ring gear selectively be positioned on the primary importance that meshes with second planetary gear or the second place that meshes with second planetary gear and the big end parts of first central gear simultaneously on.
6. hand-held shrub and hedge trimmer according to claim 5, it is characterized in that: on described primary importance, the relative gear box casing of described second ring gear is circumferentially fixing, and on the described second place, described second ring gear can circumferentially be sleeved in the housing of described gear-box rotationally.
7. hand-held shrub and hedge trimmer according to claim 6 is characterized in that: the outer circumference surface of described second ring gear is provided with the grafting tooth, and the inner walls of described gear-box is provided with the inserting groove with described grafting tooth coupling.
8. hand-held shrub and hedge trimmer according to claim 5 is characterized in that: described gear-box is provided with the shifting part that described second ring gear is moved outward between the described primary importance and the second place.
9. hand-held shrub and hedge trimmer according to claim 8 is characterized in that: the outer circumference surface of described second ring gear is provided with circumferential groove, and the two ends of described shifting part are passed respectively and are located at the hole on the gear-box and are fitted in the described circumferential groove.
10. according to each described hand-held shrub and hedge trimmer of claim 1 to 9, it is characterized in that: described drive part comprise the bevel gear that is connected with described gearbox output shaft, with the awl fluted disc of described bevel gear engagement, described awl fluted disc is connected with described knife section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205116622U CN201854578U (en) | 2010-08-19 | 2010-08-19 | Handheld pruning scissors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205116622U CN201854578U (en) | 2010-08-19 | 2010-08-19 | Handheld pruning scissors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201854578U true CN201854578U (en) | 2011-06-08 |
Family
ID=44100407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205116622U Expired - Fee Related CN201854578U (en) | 2010-08-19 | 2010-08-19 | Handheld pruning scissors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201854578U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102369843A (en) * | 2010-08-19 | 2012-03-14 | 南京德朔实业有限公司 | Handheld pruning scissors |
| CN107470677A (en) * | 2016-06-08 | 2017-12-15 | 南京德朔实业有限公司 | Torsion exports instrument |
-
2010
- 2010-08-19 CN CN2010205116622U patent/CN201854578U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102369843A (en) * | 2010-08-19 | 2012-03-14 | 南京德朔实业有限公司 | Handheld pruning scissors |
| CN102369843B (en) * | 2010-08-19 | 2014-10-15 | 南京德朔实业有限公司 | Handheld pruning scissors |
| CN107470677A (en) * | 2016-06-08 | 2017-12-15 | 南京德朔实业有限公司 | Torsion exports instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20150819 |
|
| EXPY | Termination of patent right or utility model |