CN201075917Y - Pruning machine - Google Patents
Pruning machine Download PDFInfo
- Publication number
- CN201075917Y CN201075917Y CNU2007201091484U CN200720109148U CN201075917Y CN 201075917 Y CN201075917 Y CN 201075917Y CN U2007201091484 U CNU2007201091484 U CN U2007201091484U CN 200720109148 U CN200720109148 U CN 200720109148U CN 201075917 Y CN201075917 Y CN 201075917Y
- Authority
- CN
- China
- Prior art keywords
- eccentric block
- output gear
- overcoat
- pruner
- gear
- 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 - Lifetime
Links
- 238000013138 pruning Methods 0.000 title abstract 2
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 229910052754 neon Inorganic materials 0.000 claims description 9
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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- Gear Transmission (AREA)
Abstract
The utility model discloses a pruning machine, wherein a transmission mechanism is composed of an input gear (6), an output gear (7) and an eccentric block element, the eccentric block element comprises an eccentric block (8), an eccentric block sheath (9), a brake block (10) and a torsion spring (11) mounted in the sheath (9), the eccentric block sheath (9) via the brake block (10) and the torsion spring (110 is connected with the eccentric block (8) integrally, the input gear (6) is meshed with the output gear (7), the output gear (7) is coaxial with the eccentric block sheath (9), one side surface of the output gear 97) is provided with a force transmission pin (12), the mouth at one end of an annular spring strip clamped on the cylindrical surface of the eccentric block sheath (9) is clamped on the force transmission pin (12). The utility model has the advantages that the utility model has overload protection function to work normally and reliably.
Description
Technical field:
The utility model relates to a kind of cutting implement of gardening special use, the especially a kind of pruner that can prune and repair for branch, shrub or hedge etc.
Background technology:
The critical pieces such as upper and lower blade that the pruner of prior art generally comprises casing, electromotor, transmission mechanism, Top carry handle, assistant's handle and is connected with transmission mechanism; Described electromotor setting is installed in the casing, and the output shaft of electromotor drives the outer upper and lower blade of casing by transmission mechanism and moves.Transmission mechanism generally is made up of input gear, output gear and eccentric block assembly; The eccentric block assembly comprises to be made blade produce reciprocating eccentric block by rotatablely moving and is located at brake block and torsion spring in the eccentric block overcoat; Described torsion spring tightly is enclosed within the endoporus that the eccentric block overcoat is an output gear, and an end tightly is enclosed within on the cylindrical step of eccentric block, and the other end tightly is enclosed within on the cylindrical step of brake block; Described eccentric block overcoat combines as a whole by brake block and torsion spring and eccentric block; Described input gear is meshed with output gear; Described output gear and eccentric block overcoat are an integral body.After starting pruner, motor rotates by the input gear driven output gear on its output shaft, thereby output gear is rotated together by torsion spring drive eccentric block and assembly, and it is reciprocating finally to drive upper and lower blade.Adopt the pruner of above structure because the eccentric block overcoat in its output gear and the eccentric block assembly is an integral body; there is not overload protecting mechanism between them; therefore it exists such potential safety hazard: when pruner is cut thick branch or is mixed in iron wire in the branch or during foreign matter such as steel wire; can cause the damage of parts such as pruner middle gear, blade because the rigid shock of foreign matters such as iron wire or steel wire surpasses the load of its permission; serious even can burn out electromotor in the pruner, thus the operate as normal of pruner influenced.
The name of having announced on the China national intellectual property board web is called a kind of utility model patent of brake gear of pruner, and it comprises that brake lever, shift fork, torsion spring, gear, friction plate, lining, eccentric wheel cover are eccentric block overcoat and back-up ring; Described torsion spring one end is fastenedly connected the eccentric wheel cover, inserts in the lining, and other end spring steel wire inserts in the shift fork hole; Described friction plate, gear, another piece friction plate, disk spring are inserted in lining successively; Described lining one end has an annular groove, and described back-up ring can snap in and block friction plate, gear, another piece friction plate and disk spring in the groove, and makes it the axial compressive force that keeps certain.Its operation principle is: when the motor drives gear rotates, gear can by disk spring and friction plate be used for drive lining and rotate; Because the lining direction of rotation is opposite with the torsion spring hand of spiral, so drive torsion spring the lining rotation time and the eccentric wheel cover rotates, the eccentric wheel cover rotates drive pruner blade work.When pruner is cut thick branch or is mixed in iron wire in the branch or during foreign matter such as steel wire, be the external force that is subjected to of pruner greater than because when lining that disk spring pressure forms and the frictional force between the gear, will skid between lining and the gear, thereby reach the purpose of unloading.Though above-mentioned utility model has certain unloading function, but still there is weak point in it: to have between friction plate, gear and the disk spring certain axial compressive force just can make gear by disk spring and friction plate be used for drive lining and rotate, after friction plate skidded wearing and tearing in pruner uses, the axial compressive force between friction plate, gear and the disk spring can slowly diminish; And, because the elasticity of disk spring is bigger to the susceptibility of axial dimension, therefore after pruner skids wearing and tearing, the elastic reaction of disk spring also can slowly weaken, thereby the rubbing action between lining and the gear is gone down, though finally cause pruner to have unloading function, when being subjected to very little external force, can very easily produce skidding also, thereby make pruner can not be normally, work reliably
In addition; when using pruner out of doors; the user runs into such problem through regular meeting; promptly when pruner inserts socket and opens switch; pruner can not run well; it is the problem of pruner that but the user but can't judge fast, or the problem of power supply, thereby has brought certain inconvenience to the user.
The utility model content:
The technical problems to be solved in the utility model is to provide a kind of and not only have overload protection function but also can make machine pruner normal, that work reliably.
Technical solution of the present utility model is that a kind of pruner with following structure is provided: it comprises casing, motor, transmission mechanism, Top carry handle, assistant's handle and blade; Described transmission mechanism is made up of input gear, output gear and eccentric block assembly; Described eccentric block assembly comprises and is used to make blade produce reciprocating eccentric block, eccentric block overcoat and is contained in eccentric block overcoat interior brake block and torsion spring; Described eccentric block overcoat combines as a whole by brake block and torsion spring and eccentric block; Described torsion spring tightly is enclosed within the endoporus of eccentric block overcoat, and the one end tightly is enclosed within on the cylindrical step of eccentric block, and the other end tightly is enclosed within on the cylindrical step of brake block; Described input gear and output gear engagement; Described output gear and eccentric block overcoat are concentric; Described output gear one side surface has the power transmission pin; An end of holding the annular spring leaf on eccentric block overcoat outer round surface tightly is stuck on the power transmission pin.
After adopting above structure; compared with prior art; the advantage that the utlity model has is: output gear in the utility model and eccentric block overcoat are concentric; they no longer are an integral body; be to drive the annular spring leaf rotation between them by the power transmission pin on the output gear; drive the rotation of eccentric block overcoat by the frictional force between annular spring leaf and the eccentric block overcoat again, therefore have a prior art pruner overload protection function.
In addition, because annular spring leaf is to hug on the outer round surface of eccentric block overcoat, the anchor ring radial width of one end opening and variation makes the annular spring leaf in the utility model have the automatic compensation ability of very strong elastic force, in the long-term use of pruner and after repeatedly unloading is skidded, annular spring leaf still can remain certain elasticity, thereby make the frictional force between the outer round surface of annular spring leaf and eccentric block overcoat keep constant, avoided when being subjected to very little external force, all can producing the phenomenon of skidding, thereby guaranteed that the utility model pruner can be normal, work reliably.
Above-mentioned annular spring leaf does not wait to width from opening two side direction adapter ring face diameters.Not the waiting of anchor ring radial width can make the annular spring leaf endoporus produce the bigger inside power of holding tightly when expanding outwardly with eccentric block overcoat interference fit; still can keep certain elasticity even repeatedly skid after the surperficial abrasion; thereby make the utility model when possessing the overload protection ability, can make normal more, the work reliably of pruner in the utility model.
Also can establish a power source indicating device on the said machine casing.The installation of power source indicating device can make the operator when machine can not run well, and judges rapidly it is machine problem or power issue, and the machine problem here comprises makes problems such as gear breaks because load is excessive.
Above-mentioned power source indicating device refers to be connected in parallel on light emitting diode or the neon tube on the switch front end cable in the casing.
Description of drawings:
Fig. 1 is the interior schematic diagram of the utility model pruner.
Fig. 2 is the enlarged diagram of " A " among Fig. 1.
Fig. 3 is the cross-sectional schematic of edge " B-B " line among Fig. 2.
Shown in the figure: 1, casing, 2, electromotor, 3, Top carry handle, 4, assistant's handle, 5, blade, 6, input gear, 7, output gear, 8, eccentric block, 9, the eccentric block overcoat, 10, brake block, 11, torsion spring, 12, the power transmission pin, 13, annular spring leaf, 14, light emitting diode or neon tube.
Embodiment:
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
As Fig. 1, Fig. 2 and shown in Figure 3, comprise mainly in the pruner of the present utility model that casing 1, electromotor 2, transmission mechanism, Top carry handle 3, assistant are 4 and blade 5.Described transmission mechanism is made up of input gear 6, output gear 7 and eccentric block assembly; Described eccentric block assembly comprises to be made blade 5 produce reciprocating eccentric block 8, eccentric block overcoats 9 and is contained in brake block 10 and torsion spring 11 in the eccentric block overcoat 9 by rotatablely moving.Described eccentric block overcoat 9 combines as a whole with eccentric block 8 by brake block 10 and torsion spring 11; Described torsion spring 11 tightly is enclosed within the endoporus of eccentric block overcoat 9, and the one end tightly is enclosed within on the cylindrical step of eccentric block 8, and the other end tightly is enclosed within on the cylindrical step of brake block 10; Described input gear 6 is meshing with each other with output gear 7.
Above structure is all identical with the prior art pruner, the difference of the utility model and prior art pruner maximum is: the output gear 7 in the utility model is still concentric with eccentric block overcoat 9, but they are no longer as a whole, their concrete annexation is as follows: be connected with a power transmission pin 12 on the side surface of described output gear 7, power transmission pin 12 departs from the centre bore of output gear 7, power transmission pin 7 can adopt with the connected mode of output gear 7 and be threaded, interference fit joint or welding, also can be made of one power transmission pin 12 and output gear 7; Annular spring leaf 13 is held tightly on the outer round surface of eccentric block overcoat 9; The open card of described annular spring leaf 13 1 ends is on power transmission pin 12.The anchor ring of annular spring leaf 13 has a radial width that strengthens to the centre from place, opening both sides in the utility model, and as shown in Figure 3, width a is greater than width b in the annular spring leaf 13.Also be provided with a power source indicating device on the casing 1 of the present utility model, described power source indicating device, refer to be connected in parallel on light emitting diode or neon tube 14 on the casing 1 interior switch front end cable, its concrete structure can adopt as follows: light emitting diode or neon tube 14 can be installed on the little circuit board, its positive and negative two ends are connected by lead on the cable of casing 1 internal switch front end, and little circuit-board card is in casing; On the casing 1 of light emitting diode or neon tube 14 correspondences, a light transmission piece is set in addition, whether lights thereby the operator can clearly see light emitting diode or neon tube 14.The position of light emitting diode or neon tube 14 can be located at any position of casing 1; as long as its positive and negative two ends are to be connected on the cable of switch front end and can to make the operator see light emitting diode or neon tube 14 by light transmission piece, then all fall into protection domain of the present utility model.
Operation principle of the present utility model is: when the pruner operate as normal, output gear 7 drives annular spring leaf 13 rotations by power transmission pin 12; Thereby utilize spring tension hold tightly the annular spring leaf 13 of eccentric block overcoat 9 outer round surface by and eccentric block overcoat 9 between frictional force drive 9 rotations of eccentric block overcoat and drive the rotation of eccentric block assemblies, move back and forth thereby blade 5 is produced.When cutting foreign matters such as iron wire or steel wire when pruner; when the impulsive force of its generation surpasses the load range of machine permission; be that the moment of torsion of eccentric block component passes is during greater than the frictional force between annular spring leaf 13 and the eccentric block overcoat 9; will skid between annular spring leaf 13 and the eccentric block overcoat 9; avoided breaking of gear or blade; play cushioning effect, protected machine.
Structure of the present utility model is not limited to the pruner of above-mentioned employing mechanical brake structure; it also can be applied to adopt the pruner of electric brake structure; as long as eccentric block and gear on its eccentric block assembly are not one; and adopt power transmission pin and annular spring leaf; make between eccentric block and the gear and transmit moment of torsion, then all fall into protection domain of the present utility model by the frictional force between annular spring leaf endoporus and its cylindrical.
Claims (4)
1. a pruner comprises that casing (1), motor (2), transmission mechanism, Top carry handle (3), assistant are (4) and blade (5); Described transmission mechanism is made up of input gear (6), output gear (7) and eccentric block assembly; Described eccentric block assembly comprises to be made blade (5) produce reciprocating eccentric block (8), eccentric block overcoat (9) by rotatablely moving and is contained in brake block (10) and torsion spring (11) in the eccentric block overcoat (9); Described eccentric block overcoat (9) combines as a whole with eccentric block (8) by brake block (10) and torsion spring (11); Described torsion spring (11) tightly is enclosed within the endoporus of eccentric block overcoat (9), and the one end tightly is enclosed within on the cylindrical step of eccentric block (8), and the other end tightly is enclosed within on the cylindrical step of brake block (10); Described input gear (6) and output gear (7) engagement; Described output gear (7) is a concentric with eccentric block overcoat (9), and it is characterized in that: described output gear (7) one side surfaces have power transmission pin (12); The open card of one end of holding the annular spring leaf (13) on eccentric block overcoat (9) outer round surface tightly is on power transmission pin (12).
2. pruner according to claim 1 is characterized in that: described annular spring leaf (13) does not wait to width from opening two side direction adapter ring face diameters.
3. pruner according to claim 1 is characterized in that: described casing (1) is provided with a power source indicating device.
4. pruner according to claim 3 is characterized in that: described power source indicating device refers to be connected in parallel on light emitting diode or neon tube (14) on the interior switch front end of casing (1) cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201091484U CN201075917Y (en) | 2007-05-06 | 2007-05-06 | Pruning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201091484U CN201075917Y (en) | 2007-05-06 | 2007-05-06 | Pruning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201075917Y true CN201075917Y (en) | 2008-06-25 |
Family
ID=39567967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201091484U Expired - Lifetime CN201075917Y (en) | 2007-05-06 | 2007-05-06 | Pruning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201075917Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102187789A (en) * | 2010-01-28 | 2011-09-21 | 安德烈亚斯.斯蒂尔两合公司 | Eccentric gear assembly |
| CN103348874A (en) * | 2013-07-23 | 2013-10-16 | 宁波创跃园林工具有限公司 | Novel pruner |
| CN103609347A (en) * | 2013-12-06 | 2014-03-05 | 广西大学 | Hedgerow trimming cutter overload protection device |
-
2007
- 2007-05-06 CN CNU2007201091484U patent/CN201075917Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102187789A (en) * | 2010-01-28 | 2011-09-21 | 安德烈亚斯.斯蒂尔两合公司 | Eccentric gear assembly |
| CN102187789B (en) * | 2010-01-28 | 2014-07-23 | 安德烈亚斯.斯蒂尔两合公司 | Eccentric gear assembly |
| 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 |
| CN103609347A (en) * | 2013-12-06 | 2014-03-05 | 广西大学 | Hedgerow trimming cutter overload protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070506 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |