CN203765592U - Rear power tool - Google Patents
Rear power tool Download PDFInfo
- Publication number
- CN203765592U CN203765592U CN201320552672.4U CN201320552672U CN203765592U CN 203765592 U CN203765592 U CN 203765592U CN 201320552672 U CN201320552672 U CN 201320552672U CN 203765592 U CN203765592 U CN 203765592U
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- Prior art keywords
- motor
- power
- housing
- lever
- electric machine
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- Expired - Lifetime
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Abstract
The utility model discloses a rear power tool. A battery pack and a power driving device are arranged in a shell. The rear power tool comprises a control handle and an output rod connected with a power head. A soft shaft for transmission is arranged in the output rod of the power tool. One end of the soft shaft is connected to the power driving device in the power head. The power driving device is fixed as a whole in the shell. The rear power tool has the beneficial effects that the transmission efficiency of the electric rear power tool is high and a motor does not need to be decelerated by a gearbox; and the efficiency loss in a gear decelerating process is effectively overcome so that the output power and the efficiency are high and the strength is sufficient. In addition, the speed of the motor is adjusted to a speed required by a machine and the highly-efficient torque output can be supplied without accelerating. Moreover, the structural layout is compact and reasonable. Fan blades are adopted for the air outputting of the motor, and the fan blades have a guiding effect on the flow direction of wind. Besides, the fan blades are combined with an air flue consisting of ribs formed by injection molding in the shell and window blinds and heat dissipation holes arranged on the shell so that the structural layout is compact and reasonable and the heat dissipation efficiency is high.
Description
Technical field
The utility model relates to a kind of graden machine instrument, the especially rear-mounted power tool that power is provided.
Background technology
The garden instrument major part of the rear-mounted powers such as grass-mowing machine in the market, loosenning tiller, trimmer is all to use miniature gasoline engine, and efficiency is low, also can use AC power, but carries inconvenience.Use when battery-operated, drive motors is all to be slowed down and be connected on hard axle by reduction box, and in the process moving in turn at gear, what efficiency can one-level one-level successively decreases, so add up, loss efficiency is many, and service efficiency is low, and strength when work is little, and effect is bad.And the space taking with the unit head of gear-box is larger, and cost is high, heavier when use.Space at the limited radiator structure such as Li Qi air channel, space, fan blade of unit head will be compressed, is unfavorable for like this heat radiation.
Utility model content
The utility model, in view of above-mentioned phenomenon, provides a kind of motor output shaft drive mechanism that can improve grass-mowing machine efficiency.The rear-mounted power tool technique scheme that the utility model relates to is a kind of rear-mounted power instrument, comprising: the unit head of power source is provided, and it comprises housing, is provided with power brick and Power Drive Unit in housing; Joystick; The take-off lever being connected with unit head; In the take-off lever of power tool, be provided with the flexible axle that transmission is used; This flexible axle one end connects the Power Drive Unit in unit head, to power is provided; Power Drive Unit is done as a whole being fixed in housing.
Preferably, Power Drive Unit comprises motor and electric machine support, and motor includes motor output shaft, and electric machine support is by bolt and motor assembling one, and assembling all-in-one-piece Power Drive Unit is done as a whole being embedded in casing and fixed.
Preferably, electric machine support comprises the flange that be connected fixing with the stator of motor, flange have tubular for holding fan blade sleeve, be connected and dispose tube connector with sleeve.
Preferably, on sleeve, have the air outlet of heat radiation.
Preferably, the output shaft that the output of Power Drive Unit is motor extends in the tube connector of electric machine support.
Preferably, on motor output shaft, near the fixing fan blade of output, fan blade has been arranged on the corresponding air outlet of electric machine support place, dispels the heat for the assembly of the heatings such as the power brick in housing, motor, circuit board.
Preferably, the shutter in housing, injection moulding forms muscle and housing, the air channel that louvre forms.
In addition, a kind of rear-mounted power instrument, can also be that it comprises that Power Drive Unit comprises motor and electric machine support; Electric machine support is by bolt and motor assembling one, and assembling all-in-one-piece Power Drive Unit is done as a whole being embedded in casing and fixed; Motor includes motor output shaft, and the link that the output shaft of motor is nested into flexible axle is directly sent to flexible axle by motor output shaft moment of torsion by motor, is more further transferred on working head by flexible axle.
Preferably, electric machine support is wherein provided with tight lock part on tube connector, is also provided with locking hole on tube connector, has the chute that extends to locking hole from end at tube connector inwall.
Preferably, the lock knob of take-off lever is slided in locking hole and is positioned by chute, and tight lock part can screw by bolt, and then fastening to carrying out between take-off lever and tube connector.
In addition, this power tool direct transferring adopts brshless DC motor as power source, has avoided like this brush motor rotating speed slow, the problem that long-term running has carbon dust to pile up.
The beneficial effects of the utility model are: this electric tool adopts the fixation that is fixed as one of motor and electric machine support, and motor output shaft directly connects soft axle transmission, and transmission efficiency is high, and motor does not need to slow down by gear-box; Effectively solved by the loss in efficiency in gear reduction process, so power output is large, efficiency is high, strength foot.And adjustment of rotational speed becomes the needed speed of machine, without acceleration, just can provide high efficiency moment of torsion output.And topology layout compactness, rationally.
Motor adopts fan blade air-out, and fan blade play the guiding role to the flow direction of wind, and the air channel forming in conjunction with the shutter on muscle and the housing of injection moulding formation in housing, louvre, topology layout compactness, and rationally, radiating efficiency is high.
Brief description of the drawings
Fig. 1 represents the attached structural representation of joining grass-mowing machine of rear-mounted power instrument.
Fig. 2 is the left view of presentation graphs 1.
Fig. 3 is the front view that represents rear-mounted power instrument.
Fig. 4 is the upward view (omission assist handle) that represents rear-mounted power instrument.
Fig. 5 is the structural representation that represents motor output end.
Fig. 6 is the schematic diagram that represents power brick inserting mode.
Fig. 7 is the assembly structure schematic diagram that represents Power Drive Unit and it and take-off lever
Fig. 8 is the stereogram that represents motor output end support.
Fig. 9 is the cutaway view that represents motor output end support.
Figure 10 is the structural representation that represents rear-mounted power instrument joystick.
Figure 11 is the schematic diagram that represents joystick action.
Figure 12 is the structural representation that represents self-lock switch.
Figure 13 is the structural representation that represents main switch.
Figure 14 represents joiner structure schematic diagram.
Figure 15 is the cutaway view that represents Figure 14.
Figure 16 represents that A-A in Figure 14 is to view.
Figure 17 is the schematic diagram that represents the spanner degree of tightness shown in Figure 16.
Figure 18 is the structural representation that represents working head tube connector or take-off lever end.
In figure: 1, rear-mounted power instrument, 2, unit head, 21, housing, 22, power brick, 23, supporting seat, 24, motor, 25, fan blade, 26, motor output shaft, 231, flange, 232, air outlet, 233, tube connector, 234, tight lock part, 235, locking hole, 236, chute, 3, joystick, 31, lever, 32, handle main body, 33, retaining frame, 34, self-lock switch, 341, trigger, 342, position limiting slide block, 35, main switch, 36, power switch, 37, trigger switch, 4, take-off lever, 4a, take-off lever, 41, flexible axle, 42, pipe, 43, lock knob, 4a1, flexible axle, 4a2, pipe, 5, coupling, 51, body, 52, locating hole, 53, locking bed, 54, fluting, 55, bolt, 56, spanner, 57 flutings, 58, screw, 59, nut, 6, moving head, 7, guard shield, 8, working head.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection domain of the present utility model is made to more explicit defining.And should be appreciated that as used herein wording and term are for illustration purpose, and the property of should not be considered as limiting.
As shown in Fig. 1 Fig. 2, rear-mounted power instrument 1 can attachedly be joined grass-mowing machine working head, and 8, in the time mowing or brush is wooden, use.Wherein rear-mounted power instrument 1 comprises: the take-off lever 4 that the unit head 2 of power source is provided, is connected with unit head 2; Power tool 1 also further comprised joystick 3 and be arranged on assist handle 3a on take-off lever 4, the other end of take-off lever 4 be connected with for the working head 8 attached coupling of joining 5.In addition; working head 8 has comprised take-off lever 4a; connect moving head 6 in one end of take-off lever 4a, at take-off lever 4a guard shield 7 for the protection of operator during near moving head 6 position fixed operation; when take-off lever 4a on working head 8 is plugged on coupling 5 away from one end (as shown in figure 15) of moving head 6, the flexible axle in two take-off levers connects to come outputting power.
As Fig. 3 Fig. 4 shows the primary structure details of rear-mounted power instrument 1, as shown in Figure 3, unit head has further comprised housing 21, is provided with power brick 22 in housing 21, and power brick 22 is wrapped in wherein by housing 21 half in the present embodiment; To be completely wrapped in housing be also the embodiment that the art personnel easily expect to power brick in addition.Rear-mounted power instrument 1 further comprises joystick 3, joystick 3 comprises lever 31 and the handle main body 32 that operator grips, wherein lever 31 is fixed on take-off lever 4 with handle main body 32, the retaining frame 33 that the outside protuberance protection hand of lever 31 is used, retaining frame two ends connect respectively unit head 2 and handle main body 32, are provided with power switch 36 in handle main body; Lever 31 is setting up and down self-lock switch 34 and main switch 35.
In the take-off lever 4 of power tool 1, be provided with the flexible axle 41 that transmission is used; These flexible axle 41 one end connect the drive motors in unit head, and one end extends in coupling 5, to power is provided, specifically sees description below.
For handled easily person's gripping, rear-mounted power instrument 1 is fixed assist handle 3a on take-off lever 4, and the geomery of assist handle 3a can be according to different product standard adaptations, and the conventional design that this structure is the art does not repeat them here.
The CONSTRUCTED SPECIFICATION of unit head of the present utility model is as shown in Fig. 5 Fig. 6, and housing 21 one end extend to take-off lever; The other end is the groove of an opening, for power brick 22 is installed.In housing 21, be fixed with Power Drive Unit, Power Drive Unit comprises motor 24 and electric machine support 23, motor 24 includes motor output shaft 26, on motor output shaft 26, fix fan blade 25 near output, when assembling, electric machine support 23 is by bolt and motor assembling one, and the fan blade 25 after assembling has been arranged on the corresponding air outlet of electric machine support 232 places, dispels the heat for the assembly of the heatings such as the power brick in housing, motor, circuit board.Power Drive Unit is done as a whole being embedded in casing 21 and is fixed, and the output shaft 26 that the output of Power Drive Unit is motor extends to the interior (see figure 8) of tube connector 233 of electric machine support 23.Power Drive Unit is done as a whole being fixed in housing.Shutter on injection moulding forms in housing in addition muscle and housing, the air channel that louvre forms, muscle wherein and shutter, the usual design means using of the art personnel that are designed to of louvre does not repeat them here.
As shown in Fig. 7 Fig. 8 Fig. 9, the structural representation of Power Drive Unit and it and take-off lever.Wherein show the concrete structure of electric machine support 23 as Fig. 8 and Fig. 9, wherein electric machine support 23 comprises the flange that be connected 231 fixing with the stator of motor, flange 231 have tubular for holding fan blade sleeve, on sleeve, have the air outlet of heat radiation, what be connected with sleeve is tube connector 233, wherein on tube connector 233, be provided with tight lock part 234, on tube connector 233, be also provided with locking hole 235, have at tube connector 233 inwalls the chute that extends to locking hole from end.In the time coordinating, one end (as shown in figure 18) of take-off lever 4 is inserted in tube connector, the lock knob 43 of take-off lever is wherein slided in locking hole 235 and is positioned by chute 236, and tight lock part 234 can screw by bolt, so fastening to carrying out between take-off lever 4 and tube connector 233.After assembling, the link that the output shaft of motor is nested into flexible axle 41 is directly sent to flexible axle by motor output shaft moment of torsion by motor, is more further transferred on working head by flexible axle.Like this, can ensure that take-off lever is difficult for sliding, in the time of transmission, can reduce mechanical loss, improve transmission efficiency.
The concrete structure of joystick 3 is as shown in Figure 10 Figure 11 Figure 12 and Figure 13, and joystick comprises that lever 31, the handle main body 32 being connected with lever one end, handle main body 32 that operator grips are connected with the retaining frame 33 for the protection of operator's hand extending on unit head 2 below; Three has formed D font.On handle main body 32, be provided with the power switch 36 for power-on.On lever 31, dispose self-lock switch 34 as shown in figure 12, be used for preventing operator's maloperation self-lock switch 34, further comprise the trigger 341 of duck tongue shaped and be applied in the position limiting slide block 342 on take-off lever 4, trigger 341 and position limiting slide block 342 are fixed into one; Below lever, dispose main switch 35 as shown in figure 13 for driving trigger switch 37.Self-lock switch 34 and main switch 35 cooperatively interact to move and press trigger switch 37, and according to the press degree of trigger switch 37, drive motors 24 are carried out to the control of speed.When initial state, as shown in figure 11, trigger 341 upwarps slide block 342 a low position, and the lower end of slide block has formed and stopped main switch 35, and at this moment main switch 35 can not be pressed.In the time of operator's gripping handle, operator presses the trigger 341 of self-lock switch 34 with tiger's jaw as shown in figure 12, trigger 341 is with moving the releasing that stops making main switch 35 on movable slider 342, when after operator presses main switch 35, trigger switch is pressed in main switch 35 actions, and adjusts the rotary speed of drive motors 24 according to operator's press degree trigger switch 37.
The structural representation of the coupling as shown in Figure 14 Figure 15 Figure 16 Figure 17.Wherein, as the two ends of Figure 14 Figure 15 coupling 5 are respectively used to connect take-off lever 4 and take-off lever 4a, it is upper that rotation torque is sent to flexible axle 4a1 in the take-off lever 4a of working head one end by the flexible axle 41 in the take-off lever 4 of power tool like this, to drive working head work.Coupling 5 is called input near one end of power tool output 4, is called output near one end of working head.The concrete structure of coupling 5 is: coupling 5 comprises the body 51 of sleeve shaped, and the input of body 51 has fluting 54, and the both sides of fluting 54 are useful on the fastening base 53 of fastening use; Fastening base 53 use bolts screw to be inserted in body and carry out fastening to it at take-off lever 4.Position near fastening base 53 on body has locating hole 52, disposes screw 58 in locating hole 52, tightens screw 58 to take-off lever 4 is positioned when take-off lever 4 enters to body 51.When assembling, take-off lever 4 inserts in body 51, positions with fastening with screw 58, and locking bed is carried out fastening with bolt.
Coupling 5 be that output has fluting 57, and as shown in Figure 16 and Figure 17, the both sides of fluting 57 are useful on fastening fastening base 53a; Fastening base 53a is undertaken fastening by bolt 55 and nut 59, and the elasticity that operator can turn nut 59 carries out on fastening is finely tuned.Be connected with spanner 56 in one end of bolt 55, operator carries out the Quick-clamped of the output to body 51 and unclamps by pulling rotatably spanner 55, so that quick-replaceable working head.When assembling, take-off lever 4a when working head is inserted in the output of body 51, the lock knob 43 of the positioning action on take-off lever 4a is aimed at the locating hole of opening on body, at this moment the flexible axle 41 of the take-off lever of power tool and the take-off lever 4a1 of working head connect, moment of torsion is further sent on flexible axle 4a1 from motor is sent to flexible axle 41 like this, moment of torsion on flexible axle 4a1 further provides power to working head, in grass-mowing machine as shown in Fig. 1 Fig. 2, this flexible axle 4a1 is further sent to moving head power, drives moving head work.
In addition, working head can also be the common working heads such as gardens trimmer, pruner, bar chain saw, loosenning tiller.The power intake of this working head adopts structure as shown in figure 18, so that with rear-mounted power instrument carries out wildcard, the feature of power intake be it comprise pipe 42(4a2), in pipe, dispose flexible axle 41(4a1), pipe 42(4a2) dispose the lock knob 43 for locating for one end place of keeping to the side of wildcard coupling.
The utility model can pass through existing techniques in realizing without the technical characterictic of describing, and does not repeat them here.Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present utility model, also should belong to protection domain of the present utility model.
Claims (11)
1. a rear-mounted power instrument, is characterized in that: rear-mounted power instrument (1) comprising:
The unit head (2) that power source is provided, it comprises housing (21), is provided with power brick (22) in housing (21), and Power Drive Unit;
Joystick (3);
The take-off lever (4) being connected with unit head (2); In take-off lever (4), be provided with the flexible axle (41) that transmission is used; This flexible axle (41) one end connects the Power Drive Unit in unit head, to power is provided;
Power Drive Unit is done as a whole being fixed in housing (21).
2. rear-mounted power instrument according to claim 1, it is characterized in that: described Power Drive Unit comprises motor (24) and electric machine support (23), motor (24) includes motor output shaft (26), electric machine support (23) is by bolt and motor (24) assembling one, and assembling all-in-one-piece Power Drive Unit is done as a whole being embedded in housing (21) and fixed.
3. rear-mounted power instrument according to claim 2, it is characterized in that: described electric machine support (23) comprises the flange that be connected (231) fixing with the stator of motor, flange (231) have tubular for holding the sleeve of fan blade, be connected with sleeve and dispose tube connector (233).
4. rear-mounted power instrument according to claim 3, is characterized in that: the air outlet (232) that has heat radiation on described sleeve.
5. rear-mounted power instrument according to claim 4, is characterized in that: the output of described Power Drive Unit is in the tube connector (233) that the output shaft of motor (26) extends to electric machine support (23).
6. rear-mounted power instrument according to claim 5, it is characterized in that: described motor output shaft (26) is upper near the fixing fan blade (25) of output, fan blade (25) has been arranged on the corresponding air outlet of electric machine support (232) and has located, and dispels the heat for the assembly of the power brick in housing, motor, circuit board heating.
7. rear-mounted power instrument according to claim 4, is characterized in that: the interior injection moulding of described housing (21) is formed with the shutter on muscle and housing, the air channel that louvre forms.
8. a rear-mounted power instrument, is characterized in that: it comprises
Power Drive Unit comprises motor (24) and electric machine support (23);
Electric machine support (23) is by bolt and motor (24) assembling one, and assembling all-in-one-piece Power Drive Unit is done as a whole being embedded in housing (21) and fixed;
Motor (24) includes motor output shaft (26), and the link that the output shaft (26) of motor is nested into flexible axle (41) is directly sent to flexible axle by motor output shaft moment of torsion, is more further transferred on working head by flexible axle (41).
9. rear-mounted power instrument according to claim 8, it is characterized in that: on the tube connector (233) of described electric machine support (23), be provided with tight lock part (234), on tube connector (233), be also provided with locking hole (235), have at tube connector (233) inwall the chute that extends to locking hole from end.
10. rear-mounted power instrument according to claim 9, it is characterized in that: the lock knob (43) of described take-off lever is slided in locking hole (235) and positioned by chute (236), and tight lock part (234) screws by bolt, so fastening to carrying out between take-off lever (4) and tube connector (233).
11. according to the described rear-mounted power instrument of any one of claim 2-10, it is characterized in that described motor is brshless DC motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320552672.4U CN203765592U (en) | 2013-09-06 | 2013-09-06 | Rear power tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320552672.4U CN203765592U (en) | 2013-09-06 | 2013-09-06 | Rear power tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203765592U true CN203765592U (en) | 2014-08-13 |
Family
ID=51282834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320552672.4U Expired - Lifetime CN203765592U (en) | 2013-09-06 | 2013-09-06 | Rear power tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203765592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448036A (en) * | 2013-09-06 | 2013-12-18 | 常州格力博有限公司 | Rear power tool |
-
2013
- 2013-09-06 CN CN201320552672.4U patent/CN203765592U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448036A (en) * | 2013-09-06 | 2013-12-18 | 常州格力博有限公司 | Rear power tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.65-1 Xinggang Road, Zhonglou Economic Development Zone, Changzhou City, Jiangsu Province Patentee after: Gelibo (Jiangsu) Co.,Ltd. Address before: 213023 Jiangsu province Changzhou Xingang Tower Road Economic Development Zone No. 65 Patentee before: CHANGZHOU GLOBE Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |