CN201123243Y - Hand held cutting tool - Google Patents
Hand held cutting tool Download PDFInfo
- Publication number
- CN201123243Y CN201123243Y CN 200720041501 CN200720041501U CN201123243Y CN 201123243 Y CN201123243 Y CN 201123243Y CN 200720041501 CN200720041501 CN 200720041501 CN 200720041501 U CN200720041501 U CN 200720041501U CN 201123243 Y CN201123243 Y CN 201123243Y
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- Prior art keywords
- line
- cutting tool
- cut
- working head
- hand held
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Abstract
The utility model relates to a hand-held cutting tool, comprising a shell, an operating rod connected with the shell, a handle arranged on the operating rod, and a working head which is driven to rotate by a driving element arranged inside the shell. The working head is provided with a cutting line having at least one free tail end; the hand-held cutting tool also comprises a line storage mechanism providing cutting lines for the working head, a line disconnection control mechanism is arranged between a winding end of the line storage mechanism and the free tail end of the cutting line of the working head. The shorn-off cutting line can be further effectively utilized inside the working head, thereby reducing waste, and the cutting line stored inside the line storage mechanism provides guarantee for supplementing the cutting line needed by the working head in time.
Description
Technical field
The utility model relates to a kind of power tool, especially a kind of hand held cutting tool with line of cut.
Background technology
Existing hand held cutting tool such as mower, trimmer, usually adopt line of cut alternative metals blade to be used for cutting is repaired on the lawn, the line of cut of being made by nylon or other material has safety, characteristics and being widely used on this class cutting tool easily.Line of cut is set in the working head and extends a free terminal, this free terminal is rotated cutting with the high speed rotating of working head, and the line of cut free terminal is owing to be worn easily, therefore need prepare a coil that is wound with the certain-length line of cut, be used for replenishing the line of cut that constantly is worn; This line of cut coil directly is arranged in the working head usually, in the housing that coil is arranged at the motor top that also has, and operation for convenience, the someone expects coil is arranged on the operating grip, carries out unwrapping wire by the unwrapping wire controlling organization according to action need.
The United States Patent (USP) notification number is that 4578863 patent specification has disclosed a kind of mower that is provided with the unwrapping wire controlling organization, the line of cut coil of this mower is arranged on the handle, the unwrapping wire controlling organization comprises a locking mechanism, just can be used for unwrapping wire by this locking mechanism of manual release; Wherein be provided with the conduit of carrying line of cut in the lengthwise extension rod of mower, working head for mowing grass is threadedly connected to motor output shaft and rotates with output shaft, this motor output shaft is a hollow shaft, the line of cut that is wound on the coil extends into the hollow tube of motor output shaft by conduit, enters in the conduit of working head for mowing grass by the end of output shaft hollow tube again and extends the line of cut free terminal of the certain-length of providing; This line of cut free terminal is along with the working head for mowing grass of rotation rotates cutting in horizontal plane, the line of cut free terminal at right angles is provided with respect to the line of cut in the output shaft hollow tube, line of cut relative output shaft center line in cutting process rotates, when motor output shaft rotates, the line of cut that is positioned at the extension rod conduit then is static, and the rotation that is positioned at this section line of cut meeting motor shaft of extension rod conduit lower end and output shaft hollow tube is easy to generate the phenomenon of reversing and twining, special under the situation that motor runs up line of cut free terminal high speed rotating, the very fast meeting of line of cut is twisted off in this position, and the working head for mowing grass that the line of cut after twisting off is rotated by meeting is dished out and just can not be carried out cutting work again, needs to start the unwrapping wire controlling organization this moment and replenishes new line of cut; This structure makes that line of cut availability in cutting process is not high, wastes morely, simultaneously also needs to increase the unwrapping wire frequency, is unfavorable for improving the cutting operating efficiency.
The United States Patent (USP) notification number is that 7219431 patent specification has disclosed a kind of mower that is provided with replaceable storage line bag for another example, this storage line bag is arranged at and drives on the working head for mowing grass drive shaft rotating, and rotate with this driving shaft, being arranged at the line of cut of the interior line of cut of working head for mowing grass in storage line bag rotates with driving shaft, therefore can avoid line of cut to twine situation about twisting off takes place, but huge storage line bag is with the driving shaft high speed rotating, this causes certain energy loss can for the output of motor, especially for some with power brick or other dc source as for the cutting tool of power source, electric weight can consume very soon, and the frequent replacing of power brick or charging can reduce the cutting operating efficiency of mower, also make troubles to operation.
The utility model content
For overcoming the deficiencies in the prior art, the utility model provides a kind of cutting high efficiency, the hand held cutting tool that line of cut can make full use of, energy loss is low.
The utility model is achieved in that a kind of hand held cutting tool, comprise housing, be connected in the action bars of housing, be arranged at the handle of action bars, working head by the driving element driven in rotation that is arranged at enclosure interior, described working head be provided with for line of cut by and have a host cavity of line of cut import and outlet, described hand held cutting tool also comprises one for working head provides the wire storage mechanism of line of cut, is provided with the broken string controlling organization between the outlet of described wire storage mechanism and the outlet of working head host cavity; Described driving element has an output shaft, and described output shaft is a hollow shaft, and described broken string controlling organization is arranged on the output shaft; Described broken string controlling organization comprises a slide block, and described slide block is provided with cutter head; Host cavity distributes twist, and described host cavity is provided with guide wheel; Described working head is provided with retaining mechanism, is used for locking onto in the working head cutting off the back line of cut; Described wire storage mechanism is arranged near on the action bars of handle; Described action bars is provided with the unwrapping wire roller, and the action bars inner chamber is provided with the guide rail of promising unwrapping wire guiding; Be provided with between the lower end of described action bars and the housing and be connected flexible pipe, be used for line of cut is imported in the housing from action bars.
The described housing of second embodiment of the present utility model is provided with guard shield, and wire storage mechanism is fixedly set on the guard shield.
And it is pivotally connected to state the relative housing of action bars, and housing is changed between second operating position of first operating position of the pattern of beating the grass and deburring pattern relatively.
Compared with prior art, the beneficial effects of the utility model are: improved the availability of line of cut effectively, reduced waste, the line of cut in the Da Chu line bag can provide sufficient assurance for the required line of cut of working head.Reduce the frequency of wiring and replacing simultaneously, helped improving the cutting operating efficiency.With respect to the structure that storage line bag on the cutting tool rotates with working head, the utility model can further reduce the energy loss of cutting tool.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the utility model mower master apparent direction partial cutaway intention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is along A-A direction amplification view according to Fig. 2.
Fig. 4 is along B-B direction amplification view according to Fig. 2.
Fig. 5 is along C-C direction amplification view according to Fig. 2.
Fig. 6 is along D-D direction amplification view according to Fig. 3.
Fig. 7 is along E-E direction amplification view according to Fig. 5.
Fig. 8 is the structural representation of the utility model mower second embodiment.
Wherein: 1-mower 10b-disc 16-axle sleeve
2-extension rod 10c-import 17-housing
3-main handle 10d-outlet 18-projection
4-auxiliary-handle 11 (')-line of cut 19-locking bar
5-housing 11a (a ')-free terminal 19a-locking bar head
6-motor 12 (')-storage line bag 20-broken string controlling organization
6a-motor shaft 12a-outlet 21-box body
6b-output shaft 13a-guide rail 22-spring
7-guard shield 13b-flexible pipe 23-slide block
8-fan 13c-host cavity 23a-groove
9-transmission mechanism 13d-guide wheel 23b-cutter head
10-working head 14-retaining mechanism 24-through hole
10a-disc face 15-spring 25-unwrapping wire roller
Embodiment
The utility model has come out with a kind of hand-held cutting tool that big line bag is set, and this cutting tool can be the mower that is used for repairing the lawn, also can be trimmer.
With reference to Fig. 1, shown in Figure 2, mower 1 comprises the action bars 2 of longitudinal extension, first end of action bars 2 is formed for an annular main handle 3 of holding operation, connecting an auxiliary-handle 4 near on the action bars 2 of main handle 3 positions, the rotation adjusting can be realized in the position of these auxiliary-handle 4 relative action bars.Second end of extension rod 2 is connected with housing 5, housing 5 is provided with guard shield 7, be provided with motor 6 in the housing 5, motor 6 has a motor shaft 6a, motor shaft 6a is provided with fan 8 and is used for cooling motor 6, and the end that motor shaft 6a extends casing 5 is passed to output shaft 6b by transmission mechanism 9 with the rotation of motor 6; This transmission mechanism 9 is made up of gear that is fixedly connected on motor shaft 6a and the gear that is arranged at output shaft 6b, can certainly replace with belt wheel and carry out transmission.Output shaft 6b is relative, and motor shaft 6a be arranged in parallel, and output shaft 6b is a hollow shaft, and the slightly larger in diameter of hollow shaft is in the line of cut diameter, and the lower end of output shaft 6b fixedly installs a rotary work head 10.The one Da Chu line bag 12 that is wound with line of cut 11 is arranged near on the action bars 2 of auxiliary-handle, also is provided with on the action bars 2 in addition and carries out manual or automatic unwrapping wire when unwrapping wire roller 25 need to be used to; The line of cut 11 that is wound in the storage line bag 12 has two ends of initial and end, head end is a winding terminal, tail end contracts out the guide rail 13a that is introduced into the inner chamber that extends action bars 2 after mouthful 12a passes from the storage line, and draw by the lower end of action bars 2 and to import among the flexible pipe 13b, draw in the hollow shaft that enters output shaft 6b by flexible pipe 13b again, import 10c by working head enters working head 10 again, forms a free terminal 11a by passing in the working head 10 at last.Working head 10 is fixedly connected on output shaft 6b and rotates with output shaft, and broken string controlling organization 20 is arranged at the top of working head 10 and is connected in output shaft 6b, is used for the line of cut 11 that enters working head from output shaft 6b hollow shaft is cut off.
With reference to Fig. 3, shown in Figure 4, rotary work head 10 roughly is arranged to discoid, and it has a disc face 10a and disc 10b, and axle sleeve 16 is vertically installed in disc face 10a upward and with output shaft 6b fixedlys connected, and causes working head 10 to rotate with output shaft 6b.Working head disc face 10a is provided with a retaining mechanism 14, be provided with spirality host cavity 13c in the disc 10b, enter the through hole 24 of broken string controlling organization 20 in the quill shaft of line of cut 11 by output shaft 6b, enter in the disc 10b after entering axle sleeve 16 by the import 10c of working head, and in host cavity 13c, distribute twist, extend a free terminal 11a by disc 10b peripheral outlet 10d at last.The side of the interior 13c of spirality host cavity is provided with a plurality of guide wheel 13d and is used in the unwrapping wire process line of cut 11 being dredged.The diameter opening of through hole 24 and hollow shaft 6b and axle sleeve import 10c on rectilinear direction over against.
With reference to shown in Figure 5, broken string controlling organization 20 comprises box body 21, and be arranged at slide block 23 in the box body 21, the center of slide block 23 is provided with the through hole 24 that penetrates for line of cut, the outside of slide block 23 is provided with groove 23a, be provided with spring 22 between the groove 23a of box body 21 and slide block 23, slide block 23 is provided with cutter head 23b towards the inboard of through hole 24, cutter head 23b be positioned at same linear position on the slide block with groove 23a, and the weight ratio that the side of groove 23a is set is provided with one of cutter head 23b and stresses, under the stopped status, because the partial pressure of spring 22, slide block 23 is positioned at normal centre position, and this moment, line of cut 11 passed in the slide block through hole 24, and 23b maintains certain clearance with cutter head; When starter motor 6 rotary works, broken string controlling organization 20 runs up with output shaft 6b, slide block 23 centrifugal masterpiece make every effort to overcome clothes spring 22 active force to the side shifting that weight lays particular stress on, cause cutter head 23b to move and line of cut 11 is cut off in this position to line of cut 11.
With further reference to Fig. 6, shown in Figure 7, retaining mechanism 14 comprises a cylindrical shell 17, one locking bar 19 is arranged in the housing 17, its afterbody extends housing 17, and its head 19a stretches in the host cavity 13c, and a spring 15 is sheathed on the locking bar 19 that is positioned at enclosure interior, in addition, with locking bar head 19a over against disc 10b bottom extend a projection 18, locking bar 19 radially compresses line of cut 11 under the active force of spring 15.
Under the normal operating conditions, motor 6 drives working head 10 rotations, and the free terminal 11a of line of cut 11 cuts rotation at the in-plane that is parallel to disc face 10a; Broken string controlling organization 20 cuts off the top of line of cut 11 in working head 10.Line of cut after the cut-out stores in work 10, and by retaining mechanism 14 line of cut 11 is locked.Along with the carrying out of cutting work, line of cut free terminal 11a can wear and tear gradually, and the operator can carry out unwrapping wire by the mode of knocking.Projection 18 strikes against ground when the moving head bottom, the impact that produces makes locking bar 15 overcome the upwards skew of spring 15 pressure, make that the radially coupling mechanism force of line of cut 11 was eliminated in moment, this moment is owing to line of cut 11 produces centrifugal force in the rotation of spirality host cavity 13c high speed, under the effect of guide wheel 13d, line of cut 11 can be emitted one section from outlet 10d and is used for replenishing the free terminal 11a that is worn; When impact stops, line of cut 11 is very fast to be compressed by locking bar head 19a again.The operator can determine unwrapping wire length according to actual needs; Certainly, increase along with the unwrapping wire number of times, the working head 10 interior line of cut terminations that cut off by broken string controlling organization 20 can move to the compacted position near locking bar 15 gradually, and when this line of cut termination can't be locked by locking bar 15,11 of this section lines of cut can be dished out by working head 10 rotations.So those skilled in the art it is contemplated that, retaining mechanism 14 are arranged at effective utilization that will be more conducive to line of cut 11 near the peripheral outlet 10d position of disc 10b.After the line of cut in the working head 10 11 used up, the line of cut 11 in the Da Chu line bag 12 provided assurance for working head provides line source; The operator can carry out unwrapping wire by the unwrapping wire controlling organization under stopped status; the operator can unwrapping wire roller 25 carries out manual unwrapping wire on the action bars by being arranged at; also can carry out automatic unwrapping wire, thereby new line of cut is supplemented in the working head 10 by controlling a drive motors.Prior art discloses similar unwrapping wire controlling organization, and the unwrapping wire mode as United States Patent (USP) 4211004 is disclosed repeats no more herein.When motor is activated rotation, broken string controlling organization 20 cuts off line of cut 11 in the moving head upper end, thereby the broken string position of conscious Cutting Control line 11 is avoided occurring in the background technology line of cut and is twisted off often, and the situation that the line of cut after twisting off can't utilize again takes place.
With reference to shown in Figure 8, be second embodiment of the present utility model.This example structure is roughly similar to first example structure, and therefore identical member is represented with same numbering, and identical member also repeats no more; Difference only is that Da Chu line bag 12 ' is fixedly set in guard shield 7 tops, and the line of cut 11 ' of drawing from storage line bag 12 ' is shorter relatively to the distance of working head 10 like this, more helps the lead and the unwrapping wire of line of cut 11 '; Broken string controlling organization 20 can be able to be arranged at any one position between line of cut free terminal 11a ' and the Da Chu line bag 12 ', an as long as starter motor 6, line of cut 11 ' just can automatically be cut off in this position, thereby can avoid line of cut 11 ' in the quill shaft of output shaft 6b and twisting off and twining of working head 10 positions effectively.It is pivotally connected that the while present embodiment shows extension action bars 2 relative working heads 10, and can between the second place shown in primary importance shown in the solid line and the dotted line, be rotated adjusting, make this cutting tool 1 can in beat the grass and two kinds of mode of operations of deburring between change.
Claims (10)
1. hand held cutting tool, comprise housing (5), be connected in the action bars (2) of housing, be arranged at the handle (3 of action bars, 4), working head (10) by the driving element that is arranged at enclosure interior (6) driven in rotation, described working head is provided with for line of cut (11,11 ') by and have line of cut import (10c) with the outlet (10d) host cavity (13c), it is characterized in that: described hand held cutting tool comprises that also one provides the wire storage mechanism (12 of line of cut for working head, 12 '), be provided with broken string controlling organization (20) between outlet of described wire storage mechanism (12a) and the working head host cavity outlet (10d).
2. hand held cutting tool according to claim 1 is characterized in that: described driving element has an output shaft (6b), and described output shaft is a hollow shaft, and described broken string controlling organization (20) is arranged on the output shaft.
3. hand held cutting tool according to claim 2 is characterized in that: described broken string controlling organization (20) comprises a slide block (23), and described slide block is provided with cutter head (23b).
4. hand held cutting tool according to claim 3 is characterized in that: described host cavity (13c) distributes twist, and described host cavity is provided with guide wheel (13d).
5. hand held cutting tool according to claim 4 is characterized in that: described working head (10) is provided with retaining mechanism (14).
6. hand held cutting tool according to claim 1 is characterized in that: described wire storage mechanism (12) is arranged near on the action bars of handle.
7. hand held cutting tool according to claim 6 is characterized in that: described action bars is provided with unwrapping wire roller (25), and the action bars inner chamber is provided with the guide rail (13a) of promising unwrapping wire guiding.
8. hand held cutting tool according to claim 7 is characterized in that: be provided with between the lower end of described action bars and the housing and be connected flexible pipe (13b), be used for line of cut is imported in the housing (5) from action bars.
9. hand held cutting tool according to claim 1 is characterized in that: described housing is provided with guard shield (7), and wire storage mechanism (12 ') is fixedly set on the guard shield.
10. hand held cutting tool according to claim 1 is characterized in that: the relative housing of described action bars is pivotally connected, and housing is changed between second operating position of first operating position of the pattern of beating the grass and deburring pattern relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720041501 CN201123243Y (en) | 2007-11-21 | 2007-11-21 | Hand held cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720041501 CN201123243Y (en) | 2007-11-21 | 2007-11-21 | Hand held cutting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201123243Y true CN201123243Y (en) | 2008-10-01 |
Family
ID=39996657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720041501 Expired - Fee Related CN201123243Y (en) | 2007-11-21 | 2007-11-21 | Hand held cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201123243Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101433146B (en) * | 2007-11-16 | 2012-02-01 | 苏州宝时得电动工具有限公司 | Hand held cutting tool |
| CN104067783A (en) * | 2013-03-29 | 2014-10-01 | 天佑电器（苏州）有限公司 | Brush cutter |
| CN104067764A (en) * | 2013-03-29 | 2014-10-01 | 天佑电器（苏州）有限公司 | Brush cutter |
| CN104663113A (en) * | 2013-11-28 | 2015-06-03 | 苏州宝时得电动工具有限公司 | Rotating grass trimmer |
| CN105815029A (en) * | 2014-05-30 | 2016-08-03 | 苏州宝时得电动工具有限公司 | Grass trimmer |
| CN106256180A (en) * | 2015-06-19 | 2016-12-28 | 苏州宝时得电动工具有限公司 | Grass-mowing machine |
| CN111373918A (en) * | 2018-12-28 | 2020-07-07 | 南京德朔实业有限公司 | Grass trimmer |
| US10939613B2 (en) | 2014-05-16 | 2021-03-09 | Positec Power Tools (Suzhou) Co., Ltd. | Grass trimmer and cord delivering method of grass trimmer |
-
2007
- 2007-11-21 CN CN 200720041501 patent/CN201123243Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101433146B (en) * | 2007-11-16 | 2012-02-01 | 苏州宝时得电动工具有限公司 | Hand held cutting tool |
| CN104067783A (en) * | 2013-03-29 | 2014-10-01 | 天佑电器（苏州）有限公司 | Brush cutter |
| CN104067764A (en) * | 2013-03-29 | 2014-10-01 | 天佑电器（苏州）有限公司 | Brush cutter |
| CN104663113A (en) * | 2013-11-28 | 2015-06-03 | 苏州宝时得电动工具有限公司 | Rotating grass trimmer |
| CN104663113B (en) * | 2013-11-28 | 2016-08-31 | 苏州宝时得电动工具有限公司 | A kind of rotary grass-mowing machine |
| US10939613B2 (en) | 2014-05-16 | 2021-03-09 | Positec Power Tools (Suzhou) Co., Ltd. | Grass trimmer and cord delivering method of grass trimmer |
| CN105815029A (en) * | 2014-05-30 | 2016-08-03 | 苏州宝时得电动工具有限公司 | Grass trimmer |
| CN106256180A (en) * | 2015-06-19 | 2016-12-28 | 苏州宝时得电动工具有限公司 | Grass-mowing machine |
| CN111373918A (en) * | 2018-12-28 | 2020-07-07 | 南京德朔实业有限公司 | Grass trimmer |
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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: 20081001 Termination date: 20121121 |