CN108055925A - A kind of power head - Google Patents
A kind of power head Download PDFInfo
- Publication number
- CN108055925A CN108055925A CN201810030898.5A CN201810030898A CN108055925A CN 108055925 A CN108055925 A CN 108055925A CN 201810030898 A CN201810030898 A CN 201810030898A CN 108055925 A CN108055925 A CN 108055925A
- Authority
- CN
- China
- Prior art keywords
- switch
- housing
- power head
- motor
- motor circuit
- 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.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
- A01D69/02—Driving mechanisms or parts thereof for harvesters or mowers electric
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D75/00—Accessories for harvesters or mowers
- A01D75/20—Devices for protecting men or animals
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of power head, including：Housing, motor circuit are arranged in the housing；Auxiliary switch is arranged in the housing, and the auxiliary switch is connected in the motor circuit to control the break-make of the motor circuit；Control arm is hinged in the housing, and one end of the control arm corresponds to is provided with draught line on the auxiliary switch and the other end, and the control arm triggers the auxiliary switch when pulling the draught line.Beneficial effects of the present invention are：The security of operation is preferable, it is not easy to it is unconscious touch switch in the case of start, so use when it is safer.
Description
Technical field
The invention belongs to technical field of garden, are related to a kind of power head.
Background technology
Power head is applied on grass trimmer or similar instrument, for the cutter of mowing motor spindle to be driven to rotate, from
And realize the purpose that power is provided.
Such as a kind of Chinese patent of Application No. 201610418160.7, it discloses a kind of power head, including casing,
Driving head on casing and at least one air inlet being opened on casing, the casing internal offer at least one
A ventilation notch, the ventilation notch form heat dissipation wind channel with air inlet, and after the air inlet enters air-flow, air-flow flows into
Air-flow is blown out into casing to ventilation notch, then by driving head.
But this power head, operation reliability it is poor, easily it is unconscious touch switch in the case of start,
So as to cause certain danger, so with certain room for improvement.
The content of the invention
The purpose of the present invention is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of power head.
The purpose of the present invention can be realized by following technical proposal：A kind of power head, including：
Housing,
Motor circuit is arranged in the housing；
Auxiliary switch is arranged in the housing, and the auxiliary switch is connected in the motor circuit to control
Make the break-make of the motor circuit；
Control arm is hinged in the housing, and one end of the control arm is corresponded on the auxiliary switch and the other end
Draught line is provided with, the control arm triggers the auxiliary switch when pulling the draught line.
Preferably, safety switching mechanism is provided on the housing, the safety switching mechanism and motor circuit electricity
It connects to control the break-make of the motor circuit.
Preferably, the upper and lower ends of the control arm are respectively to contradict end and traction end, it is provided on the control arm
Hinge hole, the hinge hole are located between the conflict end and the traction end, and hinged seat is provided on the housing, described
Hinge hole is hinged with the hinged seat, and the conflict end corresponds to the auxiliary switch, and the draught line is connected to the traction end
On, when the draught line pulling traction end, the conflict end is contradicted on the auxiliary switch.
Preferably, being additionally provided with resetting spring in the housing, reset terminal, the reset are additionally provided on the control arm
End is between the hinge hole and the traction end, and on the resetting spring and the reset terminal, the resetting spring is used for
The control arm is pulled so that the conflict end is separated with the auxiliary switch.
Preferably, the safety switching mechanism includes safety switch, switch slot and triggering strip, the switch slot is to fall
T-shaped structure and set on the housing, the safety switch be arranged on it is described switch slot side wall on, it is described triggering strip it is embedding
It is located in the switch slot and is contradicted with the safety switch and connect to trigger the safety switch.
Preferably, the triggering strip includes strip seat and isolation, the strip seat is bar shaped mount structure, described to touch
Clockwork spring, which has, contradicts convex block and handle, and the bottom of the isolation is located at institute with the strip seat integrally connected and the handle
The top of triggering item is stated, the triggering strip is worn in the switch slot and the conflict convex block is squeezed when pinning the handle
Press the safety switch.
Preferably, being additionally provided with motor in the housing, the motor is connected with the motor circuit, and the power
Circuit controls the motor to open or stop.
Preferably, being additionally provided with master switch in the housing, the master switch is arranged in the motor circuit, and
The master switch is used to that the motor circuit to be controlled to be turned on or off.
Preferably, the power when auxiliary switch, the safety switching mechanism and the master switch trigger
Circuit controls the motor starting.
Preferably, being provided with fan blade and wind loop in the housing, the wind loop is arranged on the motor, described
Fan blade is connected to the output shaft upper end of the motor, and between the inner wall of the wind loop and the housing and the fan blade with
Dustproof ventilated gap is both provided between the upper wall of the housing.
Compared with prior art, beneficial effects of the present invention are：
1st, operation security it is preferable, it is not easy to it is unconscious touch switch in the case of start, so use when ratio
It is safer.
2nd, safety switching mechanism can play the role of safety lock, open or close after use before use, significantly
The security for improving power head, and in case of emergency, direct closed safe switching mechanism, can closed safe lock,
So as to play the role of emergency stop.
Description of the drawings
Fig. 1 is the structure diagram of the power head of the present invention.
Fig. 2 is the schematic diagram of the safety switching mechanism of the present invention.
Fig. 3 is the connection relationship diagram of the safety switch and switch slot of the present invention.
Fig. 4 is the structure diagram of the triggering strip of the present invention.
Fig. 5 is the fan blade of the present invention and the connection relationship diagram of wind loop.
In figure, 100, housing；110th, hinged seat；120th, resetting spring；200th, auxiliary switch；300th, control arm；310th, support
Contravention；320th, traction end；330th, hinge hole；340th, reset terminal；410th, safety switch；420th, slot is switched；430th, strip is triggered；
431st, strip seat；432nd, isolation；433rd, convex block is contradicted；434th, handle；500th, fan blade；600th, wind loop；700th, dustproof ventilated
Gap；800th, motor.
Specific embodiment
It is specific embodiments of the present invention and with reference to attached drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, a kind of power head, including：Housing 100, motor circuit (are not drawn in figure
Go out), auxiliary switch 200 and control arm 300, which is preferably applied on grass trimmer, for for mowing motor spindle
Blade provides power.
It is worth noting that, the power head on traditional grass trimmer passes through the main switch on mowing cleaner handgrip 434 herein
It is turned on or off, like this, only there are one switching on entire grass trimmer, for power head to be controlled to be turned on or off, this
It is dangerous higher if sample, once the hand of user accidentallys run into main switch, so that if the blade rotation of grass trimmer,
The personnel of be easy to causeing are subject to unexpected injury, above-mentioned in order to overcome the problems, such as, specially on the basis of main switch, increased auxiliary is opened
200 are closed, it is necessary to which driving power head could be given in the case of triggering main switch and auxiliary switch 200 simultaneously, and this makes it possible to big
The big security for improving operation.
Housing 100 is exactly the shell of power head, and motor circuit is arranged in the housing 100；It is worth explanation herein
It is that motor circuit is exactly for controlling the component circuitries such as motor 800；Preferably, the tool of housing 100 is there are two side, motor 800 with
Motor circuit is located between two sides of housing 100.
Auxiliary switch 200 is arranged in the housing 100, and the auxiliary switch 200 is connected to the motor circuit
On for controlling the break-make of the motor circuit；Auxiliary switch 200 is actually one of motor circuit, is located at housing
100 side, main switch are located on the other side of housing 100；Auxiliary switch 200 is press-button structure, when main switch and auxiliary
Switch 200 is when pressing, motor circuit connection, and so as to which drive motor 800 rotates, this makes it possible to avoid unconscious pressing master
It switchs and power head is caused to start.
Control arm 300 is hinged in the housing 100, and one end of the control arm 300 corresponds to the auxiliary switch
200 and the other end on be provided with draught line (being not drawn into figure), the control arm 300 triggers described when pulling the draught line
Auxiliary switch 200.
Control arm 300 is practically connected in the outside of 100 side of housing, and one end of draught line is connected to control arm 300
Lower end, and the other end of draught line is connected on the operating handle of grass trimmer, and operating handle can pull.
In the actual use process, in the case where main switch starts, pull operation handle makes draught line pull control
Arm 300 makes control arm 300 be rotated around hinge joint, and the end of control arm 300 can push down auxiliary switch 200 at this time, so that auxiliary
Switch 200 is helped to start, motor 800 starts；When unclamping operating handle, control arm 300 resets, and auxiliary switch 200 is closed, at this time horse
It is stopped up to 800.
By the structure of above-mentioned auxiliary switch 200, only when the main switch in grass trimmer hand handle and manipulator are upper
Auxiliary switch 200 start together in the case of, power head can just start, and it is worth noting that, pass through pull and unclamp
It acts to control auxiliary switch 200, can so prevent to start the situation of power head because of fortuitous event.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, on the basis of the above embodiment, safety is provided on the housing 100
Switching mechanism, the safety switching mechanism are electrically connected to control the break-make of the motor circuit with the motor circuit.
Herein it is worth noting that, it is preferred that entire power head tool there are three control node, it is that is, main switch, auxiliary
Help switch 200 and safety switch 410 it is several, only when three opens together, power head can be just activated.
Preferably, safety switching mechanism is actually the safety lock of power head, without being controlled in operation,
It sets before operation, it becomes possible to realize the effect of safety lock；In actual operating process, safety open shutdown is first turned on
Then structure pins the main switch in hand handle and opens auxiliary switch 200 by operating handle, can just start power head.
Safety switching mechanism can play the role of safety lock, open or close after use before use, greatly
Improve the security of power head, and in case of emergency, direct closed safe switching mechanism, can closed safe lock, from
And play the role of emergency stop.
As shown in Figure 1, on the basis of the above embodiment, the upper and lower ends of the control arm 300 are respectively to contradict end
310 and traction end 320, hinge hole 330 is provided on the control arm 300, and the hinge hole 330 is located at the conflict end
Between 310 and the traction end 320, be provided with hinged seat 110 on the housing 100, the hinge hole 330 with it is described hinged
Seat 110 is hinged, and the conflict end 310 corresponds to the auxiliary switch 200, and the draught line is connected on the traction end 320, when
The draught line pulls the conflict end 310 during the traction end 320 to contradict on the auxiliary switch 200.
It is worth noting that, control arm 300 is similar to double (end) wrench structure herein, and hinge hole 330 is located at control arm 300
Top, can so make entire control arm 300 rotate when it is more smooth, when traction end 320 when pulled, entire control arm
300 can be rotated with hinge hole 330 for axis, so that contradicting end 310 pushes down auxiliary switch 200, and due to hinge hole
330 are located at the upper end of control arm 300, so it is pushed down, the torque of auxiliary switch 200 is larger, ensure triggering auxiliary switch 200
Stability avoids reliably opening auxiliary switch 200 due to the torque of control arm 300 is insufficient.
As shown in Figure 1, on the basis of the above embodiment, resetting spring 120, institute are additionally provided in the housing 100
It states and reset terminal 340 is additionally provided on control arm 300, the reset terminal 340 is located at the hinge hole 330 and the traction end 320
Between, on the resetting spring 120 and the reset terminal 340, the resetting spring 120 for pull the control arm 300 from
And the conflict end 310 is made to be separated with the auxiliary switch 200.
It is worth noting that, resetting spring 120 is located at the same side of auxiliary switch 200 herein, in the actual course of work
In, when control arm 300 is pulled by draught line, around rotating counterclockwise, when draught line unclamps, resetting spring 120 pulls control
Arm 300 rotates clockwise, and is separated so that contradicting end 310 with auxiliary switch 200.
As shown in Figure 2, Figure 3, Figure 4, on the basis of the above embodiment, the safety switching mechanism includes safety switch
410th, slot 420 and triggering strip 430 are switched, the switch slot 420 is inverted T-shaped structure and is arranged on the housing 100, institute
It states safety switch 410 to be arranged on the side wall of the switch slot 420, the triggering strip 430 is embedded in the switch slot 420
And it is contradicted with the safety switch 410 and connects to trigger the safety switch 410.
Preferably, switch slot 420 and be actually the slot of a vertical bar type, and offered on the side wall of the vertical bar type groove recessed
Slot, this makes it possible to form the trough body structure that turn 90 degrees T-shaped, safety switch 410 is located in the groove of side wall, when triggering strip
430 be inserted into switch slot 420 in when, the safety switch 410 positioned at side wall is triggered, also, trigger strip 430 during operation
Interior holding is embedded the structure in switch slot 420, and this makes it possible to ensure safety switch 410 for opening.
The safety switching mechanism of this structure, it is reliable, open the guarantee of safety switch 410 by the form being embedded
It opens, only power head can be made to work in the case that safety switch 410, main switch and auxiliary switch 200 are opened.
As shown in Figure 2, Figure 3, Figure 4, on the basis of the above embodiment, the triggering strip 430 includes strip seat 431
And isolation 432, the strip seat 431 are bar shaped mount structure, the triggering item, which has, contradicts convex block 433 and handle 434,
The bottom of the isolation 432 is located at the top of the triggering item with 431 integrally connected of strip seat and the handle 434,
The triggering strip 430 is worn in the switch slot 420 and the conflict convex block 433 is squeezed when pinning the handle 434
The safety switch 410.
The structure of triggering strip 430 is made of fixed strip seat 431 and mobilizable isolation 432, and isolation
432 one end is located in the frame of strip seat 431, and isolation 432 has certain angle with strip seat 431, so triggering
Piece 432 can be bent；In the actual course of work, strip seat 431 can be plugged in switch slot 420, due to isolation 432
There are angle between strip seat 431, it cannot be introduced into so contradicting convex block 433 in switch slot 420, only press handle 434,
Triggering strip 430 can be made to continue deeper into switch slot 420, convex block 433 is contradicted at this time and be embedded into switch slot 420, and
And pressing safety switch 410, make to start by compressing switch；When closed safe is needed to switch 410, handle 434 is pressed, it becomes possible to will
Strip 430 is triggered to extract out of switch slot 420.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, on the basis of the above embodiment, also set up in the housing 100
There is motor 800 (being not drawn into figure), the motor 800 is connected with the motor circuit, and described in motor circuit control
Motor 800 is opened or stopped, and motor 800 can drive the cutter of grass trimmer to rotate.
As shown in Figure 1, on the basis of the above embodiment, master switch is additionally provided in the housing 100 (in figure not
Draw), the master switch is arranged in the motor circuit, and the master switch is used to that the motor circuit to be controlled to open
Or it closes.
It is worth noting that, main switch is exactly master switch herein, master switch be exactly on traditional power head some open
It closes, there is electric wire on master switch, electric wire is extended on the button in grass trimmer hand handle.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, on the basis of the above embodiment, the auxiliary switch 200, the safety
Switching mechanism and the master switch when triggering the motor circuit motor 800 is controlled to start, so can be significantly
Ensure the security of power head, avoid it by unconscious startup.
As shown in figure 5, being provided with fan blade 500 and wind loop 600 in the housing, the wind loop is arranged on the horse
Up on 800, the fan blade is connected to the output shaft upper end of the motor 800, and the inner wall of the wind loop and the housing it
Between and the upper wall of the fan blade and the housing between be both provided with dustproof ventilated gap 700.
What deserves to be explained is, the upper wall of housing is actually the upper wall of the cavity of housing installation motor 800, then herein
Fan blade 500 rotates, and forms the air of flowing, and the air then flowed between the inner wall of wind loop 600 and the housing by preventing
It is blown out after dirt ventilation gap, can so increase the in vivo ventilation quantity of shell, so as to radiate for motor 800, and can also will be miscellaneous
In object blowout housing.
Preferably, dustproof ventilated gap 700 is less than 3mm, so can reliably ensure dust-proof effect, and will not interfere
The flowing of air.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
Generation, but without departing from spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. a kind of power head, which is characterized in that including：
Housing,
Motor circuit is arranged in the housing；
Auxiliary switch is arranged in the housing, and the auxiliary switch is connected in the motor circuit to control institute
State the break-make of motor circuit；
Control arm is hinged in the housing, and one end of the control arm corresponds to be set on the auxiliary switch and the other end
There is draught line, the control arm triggers the auxiliary switch when pulling the draught line.
2. power head as described in claim 1, it is characterised in that：Safety switching mechanism is provided on the housing, it is described
Safety switching mechanism is electrically connected to control the break-make of the motor circuit with the motor circuit.
3. power head as described in claim 2, it is characterised in that：The upper and lower ends of the control arm be respectively contradict end with
And traction end, hinge hole is provided on the control arm, the hinge hole is located between the conflict end and the traction end,
Hinged seat is provided on the housing, the hinge hole is hinged with the hinged seat, and the conflict end corresponds to the auxiliary switch,
The draught line is connected on the traction end, and when the draught line pulling traction end, the conflict end is contradicted described
On auxiliary switch.
4. power head as described in claim 3, it is characterised in that：Resetting spring, the control are additionally provided in the housing
Reset terminal is additionally provided on arm processed, the reset terminal between the hinge hole and the traction end, the resetting spring with
On the reset terminal, the resetting spring is used to pull the control arm so that the conflict end and the auxiliary switch point
From.
5. power head as described in claim 2, it is characterised in that：The safety switching mechanism includes safety switch, switch
Slot and triggering strip, the switch slot is inverted T-shaped structure and sets on the housing, and the safety switch is arranged on described
On the side wall for switching slot, the triggering strip is embedded in the switch slot and contradicts connection with the safety switch so as to touch
Send out safety switch described.
6. power head as described in claim 5, it is characterised in that：The triggering strip includes strip seat and isolation,
The strip seat is bar shaped mount structure, and the triggering item, which has, contradicts convex block and handle, the bottom of the isolation with it is described
Strip seat integrally connected and the handle are located at the top of the triggering item, and the triggering strip is worn when pinning the handle
In to the switch slot and the conflict convex block squeezes the safety switch.
7. power head as described in claim 1, it is characterised in that：Be additionally provided with motor in the housing, the motor with
The motor circuit connection, and the motor circuit controls the motor to open or stop.
8. power head as described in claim 6, it is characterised in that：Master switch, the master are additionally provided in the housing
Control switch is arranged in the motor circuit, and the master switch is used to that the motor circuit to be controlled to be turned on or off.
9. power head as described in claim 7, it is characterised in that：The auxiliary switch, the safety switching mechanism and
Master switch motor circuit control motor starting when triggering.
10. power head as described in claim 7, it is characterised in that：Fan blade and wind loop, institute are provided in the housing
It states wind loop to be arranged on the motor, the fan blade is connected to the output shaft upper end of the motor, and the wind loop and institute
It states between the inner wall of housing and is both provided with dustproof ventilated gap between the upper wall of the fan blade and the housing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810030898.5A CN108055925A (en) | 2018-01-12 | 2018-01-12 | A kind of power head |
| PCT/CN2018/083586 WO2019136875A1 (en) | 2018-01-12 | 2018-04-18 | Power head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810030898.5A CN108055925A (en) | 2018-01-12 | 2018-01-12 | A kind of power head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108055925A true CN108055925A (en) | 2018-05-22 |
Family
ID=62141598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810030898.5A Withdrawn CN108055925A (en) | 2018-01-12 | 2018-01-12 | A kind of power head |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108055925A (en) |
| WO (1) | WO2019136875A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4101597A1 (en) | 2021-06-07 | 2022-12-14 | Black & Decker, Inc. | Power tool dual-trigger operation |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5894715A (en) * | 1993-09-22 | 1999-04-20 | Briggs & Stratton Corporation | Mounting apparatus for connecting a power head to a device |
| CN203592471U (en) * | 2013-09-06 | 2014-05-14 | 常州格力博有限公司 | Control device of rear power tool |
| CN204090557U (en) * | 2014-10-27 | 2015-01-14 | 柳州飞燕机械制造有限公司 | Cane harvester |
| CN105940870A (en) * | 2016-06-13 | 2016-09-21 | 常州格力博有限公司 | Power head and mowing machine |
-
2018
- 2018-01-12 CN CN201810030898.5A patent/CN108055925A/en not_active Withdrawn
- 2018-04-18 WO PCT/CN2018/083586 patent/WO2019136875A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019136875A1 (en) | 2019-07-18 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180522 |