CN102511246A - Mower - Google Patents

Abstract

The invention relates to a mower which comprises a casing, an operating handle connected with the casing, a motor installed in the casing, a switch which is fixedly installed in the casing and is used for driving the motor, and a charging socket for the socket joint of an outer power plug when a power supply system of the motor is charged, wherein the location of a position on the casing, which is close to the switch and the charging socket, is provided with a first opening and a second opening. The mower further comprises a safe opening/closing mechanism, wherein the safe opening/closing mechanism is installed on the casing and also covers on the first opening or the second opening selectively; and moreover, the safe opening/closing mechanism can move relative to the surface of the casing so as to alternately open the first opening or the second opening. By the structure, two functions of preventing a motor from rotating and charging a battery can be simultaneously realized so as to ensure the safety requirement; furthermore, the structure realizing the safety requirement is simple, and the manufacturing cost is low; and moreover, the use is convenient.

Description

Mower

To be the applicant be " mower " in the denomination of invention of application on July 24th, 2006 to the application, and application number is the dividing an application of Chinese invention patent application of 200610107904.X.

Technical field

The present invention relates to a kind of outdoor gardening class cutting tool, relate in particular to a kind of cordless mower.

Background technology

Divide from the form of power supply supply, present mower mainly is divided into two kinds, and a kind of have a rope formula, i.e. need stube cable during mower work, supplies power through external power source; Another kind is a cordless, i.e. need not external power source during mower work, relies on its inner rechargeable battery to provide work required electric power.Because the cordless mower is easy to use, and does not receive environmental limit, so it more and more receives user's welcome.

Usually, when mower need use, the user was located at the outer switch of mower housing through operation and makes its operation.But based on safe requirement, the cordless mower can't directly be started by external switch usually, avoiding mower when charging by external power source, because maloperation trigger switch and starter motor, thereby initiation potential.United States Patent (USP) reissue patent US Re.36 has disclosed a kind of mower with interlock switch No. 250.Handle place at this mower is provided with depression bar, in the time will using mower, need open the starting switch that is used for starter motor by moulded rod.Yet only pressing moulded rod can not starting electrode, also is provided with an interlock switch in this mower, can starter motor when needing interlock switch and starting switch to open simultaneously.And this interlock switch needs external key to open.This key has special configuration; When it inserted mower, on the one hand, it can open interlock switch; On the other hand; It can seal the opening of the charging socket that connects rechargeable battery simultaneously, through this structure, can avoid that the external charging plug inserts the rechargeable battery charging to mower in mower work; Otherwise when the rechargeable battery to mower charged, key can't insert, thus also can't start mower at the same time, thus guarantee safety.

Yet, the whole mutual interlocking gear complex structure of the mower that this patent disclosed, and manufacturing cost is higher.

Summary of the invention

The present invention provides a kind of mower, and it can prevent that two kinds of functions of motor-driven and rechargeable battery charging from realizing guaranteeing safety simultaneously, and it is simple in structure, and low cost of manufacture is easy to use.

For realizing summary of the invention; The following technical scheme of employing of the present invention: a kind of mower; Comprise housing, the operating grip that is connected with housing, be installed in the electromotor in the housing and be fixedly mounted on the charging socket that supplies the external power source plug to peg graft when being used for the switch of drive motor and the electric power system charging of giving electromotor in the housing, wherein the position near switch and charging socket offers first opening and second opening on housing; Mower further comprises safety opening-closing mechanism, and this safety opening-closing mechanism is installed on the housing, and first opening or second opening are opened through only selecting a ground with respect to surface of shell work pivoting action by safety opening-closing mechanism.

As improvement of the present invention, above-mentioned safety opening-closing mechanism comprises and is parallel to the pivot that surface of shell is installed, and be connected on the pivot and through pivot with cover first cover plate on first opening with cover second cover plate on second opening; On above-mentioned first cover plate, be provided with boss, said boss has the end of closing on pivot; Above-mentioned safety opening-closing mechanism further comprises the first button spring that is set on the pivot, and this first button spring has first elastic arm, and this first elastic arm elasticity is pressed on first cover plate; Said first cover plate convexes with first butting section closing on its free end.

As selectable improvement of the present invention, above-mentioned safety opening-closing mechanism comprises the pivot installed perpendicular to surface of shell, with pivotal connection and can and can cover the cover plate on first opening or second opening with respect to the surface of shell rotation; Said housing is provided with on the rotate path of its surface at cover plate and is used for stopping first retaining wall and second retaining wall that cover plate rotates; When first retaining wall contacted with cover plate, first opening was opened, and second opening to be cover plate cover, when second retaining wall contacts with cover plate, the unlatching of second opening, and first opening to be cover plate cover; Above-mentioned safety opening-closing mechanism further comprises the button spring that is set on the pivot, and this button spring is extended with an elastic arm; Above-mentioned cover plate is formed with wall on perpendicular to its plane, place, said elastic arm resilient abutment is on this wall.

A kind of mower; Comprise housing, the operating grip that is connected with housing, be installed in the motor in the housing and be fixedly mounted on the charging socket that supplies the external charging plug to peg graft when being used for the switch of drive motors and the electric power system charging of giving motor in the housing, wherein the position to inductive switch and charging socket offers first opening and second opening on housing; Mower further comprises safety opening-closing mechanism; This safety opening-closing mechanism comprises the cover plate that is slidably mounted on the surface of shell; Offer on the cover plate can with first opening over against the 3rd opening with can with second opening over against the 4th opening, and the spacing between first opening and second opening is not equal to the spacing between the 3rd opening and the 4th opening.

Compared with prior art, the invention has the beneficial effects as follows: mower of the present invention only uses an electrical switch, and the cooperation through this switch and key gets final product starter motor; Simultaneously; Its housing of mower of the present invention is provided with safety opening-closing mechanism; This mechanism supplies first opening that key inserts or second opening that supplies charging plug to insert through opening with one the mode of selecting with respect to the motion of housing, thereby prevents that motor from rotating and two kinds of functions of battery charge realize to guarantee safety requirements simultaneously; And, realize the simple in structure of this safety requirements, low cost of manufacture, and easy to use.In addition; This safety opening-closing mechanism has elastic components such as button spring or spring; This elastic component can with key or the charging plug of cover plate resilient abutment to block insertion of safety opening-closing mechanism; And, on the cover board further be provided with the butting section against the key or the charging plug that insert, thereby the vibrations that produce when avoiding because of motor rotation make key escape or charging plug accidental.In addition, cover plate can cover when mower does not use and be uncharged and overlay on first opening and second opening, thereby reduces foreign matter gets into housing through opening chance.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is described further.

Fig. 1 is the front view of mower of the present invention;

Fig. 2 is the circuit block diagram of the operation principle of mower of the present invention;

Fig. 3 A and Fig. 3 B are the cross-sectional schematic of first embodiment of mower of the present invention;

Fig. 3 C is the plan view that the switch of mower of the present invention is observed along A-A direction among Fig. 3 A;

Fig. 3 D is the plan view that the switch of mower of the present invention is observed along B-B direction among Fig. 3 B;

Fig. 3 E is the plan view of the key of mower of the present invention;

Fig. 4 is the cross-sectional schematic of second embodiment of mower of the present invention;

Fig. 5 A-5C is the cross-sectional schematic of the 3rd embodiment of mower of the present invention;

Fig. 5 D-5F is respectively the schematic top plan view of the safety opening-closing mechanism of the mower among Fig. 5 A-5B;

Fig. 6 A is the cross-sectional schematic of the 4th embodiment of mower of the present invention;

Fig. 6 B is the schematic top plan view of the safety opening-closing mechanism of the mower among Fig. 6 A;

Fig. 7 A-7C is the schematic top plan view of the 5th embodiment of the safety opening-closing mechanism of mower of the present invention;

Fig. 7 D is the cross-sectional schematic along the rotation hatching line C-C line direction among Fig. 7 A;

Fig. 7 E is that the safety opening-closing mechanism of Fig. 7 A removes the later vertical view of cover plate;

Fig. 7 F and Fig. 7 G are respectively the vertical view and the end views of the cover plate among Fig. 7 A;

Fig. 8 A, 8B are the schematic top plan view of the 6th embodiment of the safety opening-closing mechanism of mower of the present invention.

Embodiment

As shown in Figure 1; The present invention has disclosed a kind of cordless mower 1; This mower comprises a housing 10, from the handle 40 of the extended confession of housing user operation, wherein handle is provided with depression bar 41, the user can be through driving mower by moulded rod so that its work.Cooperate with reference to operating circuit shown in Figure 2, this mower 1 also comprises the motor 30 that is installed in the housing, electrically connects the rechargeable battery 80 that is used for the switch 50 of drive motors and electric power is provided for motor with motor.Wherein, rechargeable battery is connected with charging circuit, when the electric weight of its storage is not enough, can realize that external power source 90 is to its charging through being installed in being connected of charging socket 71 and external charging plug 72 in the housing.The cutting blade (not shown) that is used for mowing can be installed, because this motor and cutting blade are prior art, so repeat no more among the application on the motor.

Shown in Fig. 3 C, 3D, switch 50 comprises a body 51, extends into the driving rod 53 that is used for opening the push shaft 52 of switch in the body and is hubbed on the push shaft top.Cooperate and consult shown in Fig. 3 A, the 3B; Upper surface from Switch main body 51 convexes with a pair of fixed leg 55; This fixed leg can connect like screw through common fixed connection mode, and switch 50 is fixedly mounted on the housing 10; At this moment, Switch main body 51, push shaft 52 are parallel with surface of shell with driving rod 53 residing planes.The upper surface of Switch main body 51 also protrudes out plurality of conductive terminals 54, and it can be connected with rechargeable battery 80 with motor 30 through lead, makes in the switch 50 cut-in operation circuit with this.As shown in Figure 1, when the needs starter motor, the user can push the depression bar 41 on the handle 40; At this moment, this pressure can pass through driving member (not shown, belong to prior art) and drives to switch 50; Formation acts on the directed force F of driving rod 53 1 ends, shown in 3D, still; Dotted line as among this figure is represented, because driving rod 53 is to be hubbed on the push shaft 52, so driving rod can only rotate with respect to pivoting point; Can't impel driving rod 53 compressing push shafts 52 to open switch 50, so only depend on directly drive motors 30 of the depression bar 41 pushed on the handle 40.Return Fig. 3 A and 3B; Housing 10 offers one first opening 11 and one second opening 12 that closes on first opening that is right against switch drive bar 53 in its surface; Wherein charging socket 71 tops are housed in second opening 12, and its opening surface flushes basically for external charging plug 72 with housing 10 upper surfaces and pegs graft.What can expect easily to those skilled in the art certainly is; This charging socket also can be fixedly mounted in the housing and the interval second opening certain distance; Only need make its opening surface over against second opening, so that the external charging plug inserts and docks with it through second opening.Mower 1 of the present invention also comprises a key 60, and it has one wide 61 and by extended narrow 62 downwards of wide bottom.Shown in Fig. 3 A and 3C, when key 60 inserts first opening 11, its narrow 62 outside that can pass first opening and be resisted against switch drive bar 53 1 ends; At this moment, the user presses moulded rod, and the outside that its active force can be passed to the other end of driving rod forms directed force F; Shown in the dotted line among Fig. 3 C; Because the restriction that receives narrow 62 of key of driving rod 53, it can not remake pivoting action, but whole compressing push shaft; Push shaft is pressed in the Switch main body and starting switch, and then drive motors is realized the function of mowing.That is to say to have only after key inserts opening, the user presses moulded rod could start mower.

As shown in Figure 1, take place simultaneously for avoiding mower mowing work and charging, mower 1 of the present invention also is provided with a safety opening-closing mechanism 20 at its housing 10.In first embodiment shown in Fig. 3 A, 3B, this safety opening-closing mechanism comprises cover plate 211 that slidably is installed in housing 10 surfaces and first spring 212 that is installed in cover plate one side.In this embodiment, be formed with a sunk area on the housing, its first opening 11 and second opening 12 promptly are formed on this regional surface of shell, and cover plate slides in this zone.Offer on the cover plate 211 can with first opening 11 over against the 3rd opening 2111 with can with second opening 12 over against the 4th opening 2112, wherein the spacing of first opening 11 and second opening 12 is not equal to the spacing between the 3rd opening 2111 and the 4th opening 2112.Convexing with holding part 2113 on the cover plate 211 supplies the user to operate sliding skateboard.Cover plate 211 its away from the sidewall of a side of the 3rd opening 2111 along having protruded out one first pillar 2114 on the direction of its slip.First spring 212 is set on this first pillar 2114, and the length of its nature is longer than the length of first pillar, and the one of which end is resisted against on the sidewall of slide plate, and the other end then can be resisted against on the side wall in the sunk area of housing.Shown in Fig. 3 B; The 4th opening 2112 of cover plate 211 and second opening 12 of housing 10 over against the time, external charging plug 72 can insert charging socket 71 and come to the rechargeable battery charging, at this moment; Because the spacing that the 3rd opening 2111 of cover plate and the 4th opening are 2112 is different from; Be greater than, the spacing that first opening 11 of housing and second opening are 12 in this embodiment, so first opening 11 of housing 10 is stopped by cover plate 211 or hides fully and key 60 can't be inserted; Thereby, also can't drive motors even press moulded rod at this moment; Shown in Fig. 3 A; When the user operate holding part 2113 with cover plate 211 slide into the 3rd opening 2111 and first opening 11 over against the time; The user can insert key 60 and come drive motors by moulded rod; And second opening 12 was stopped by cover plate 211 or hid fully this moment, made charging plug dock with charging socket and was that rechargeable battery charges.In addition, when machine operation, promptly key 60 is in the state of insertion; First spring 212 is in contraction state by the compression of the sidewall of cover plate; This moment, it can apply a reaction force to cover plate 211, owing to stopping of key 60, though cover plate 211 stressed can't slips; This active force can further be delivered on the key 60; And key is stopped by housing 10, so this moment, key 60 received active force in the opposite direction that cover plate 211 and housing 10 apply so that key firmly is held on therebetween in its cross-wise direction, thereby has effectively avoided possibly causing the key escape to go out the generation of the situation of first opening because of the vibrations that cause during machine operation.In this embodiment; Because the 3rd opening 2111 is positioned at the left side of first opening 11 when initial; So need first spring 212 to be arranged on the right side of cover plate 211; So cover plate 211 slide to the right so that the 3rd opening and first opening over against process in, 212 compressions of first spring provide elastic force.Certainly, for what those of ordinary skill in the art can expect easily be, when when the 3rd opening is initial, being positioned at the right side of first opening, first spring just need be arranged on the left side of cover plate, so that after the key insertion, first spring can provide elastic force.

Shown in Figure 4 is second embodiment of the present invention, and its difference with respect to first embodiment is that promptly lid extends one second pillar 2214 in a side of closing on the 3rd opening; One second spring 222 is set on this pillar; So, when attaching plug docked charging with charging socket, second spring 222 was in compressed state; It can make firm being clamped between cover plate and the housing of charging plug equally to the reaction force that cover plate applies, thereby avoids charging plug to be extracted by accident.

In addition; In first and second embodiments; Because the 3rd opening and the spacing between the 4th opening of cover plate are different from the spacing between first opening and second opening; When key and charging plug did not all insert or only have one of which to insert, first opening or second opening of housing were hidden by cover plate, thereby reduced effectively that extraneous foreign matter gets in the mower housing and the chance of initiation potential.

Shown in Fig. 5 A-5F is the 3rd embodiment of the present invention.In this embodiment, housing 10 is not provided with sunk area, and first opening 11 and second opening 12 are formed directly into the surface of housing.Safety opening-closing mechanism comprises the pivot 233 that is horizontally fixed on the surface of shell; One end is enclosed within on the pivot 233, the other end can around pivot 233 rotation and can hide first opening 11 and first cover plate 231 and second cover plate 232 of second opening 12 on housing respectively, and be set on the pivot 233 and the corresponding first button spring 235 and the second button spring 236 that is resisted against on first cover plate 231 and second cover plate 232.Mower do not use and uncharged state under, first cover plate 231 and second cover plate 232 cover respectively on first opening 11 and second opening 12, so can effectively avoid extraneous foreign matter to get in the housing.First cover plate 231 surface above that closes on pivot 233 places and convexes with a boss 234, and in this embodiment, the cross section of this boss is triangular in shape, one of which right-angle side 2341 with respect to hypotenuse more near pivot 233.Shown in Fig. 5 B and 5E, when first cover plate 231 start expose first opening 11 and insert key 60 after, first cover plate 231 is resisted against wide 61 of key; At this moment, right-angle side 2341 next-door neighbours second cover plate 232 of boss 234 is to limit the rotation of second cover plate, so; Second cover plate promptly enables to open; But after it opens certain angle, the right-angle side of the boss on first cover plate will prop up on second cover plate, force it further to open; And this moment the angle opened of second cover plate still deficiency so that charging plug insert in second opening of housing, thereby prevent in motor rotation, rechargeable battery to be charged.Shown in Fig. 5 C and 5F; When second cover plate 232 open expose second opening 12 fully and insert charging plug 71 after; Right-angle side 2341 same next-door neighbour's second cover plates 232 of boss 234, so, even first cover plate can be opened; But the angle deficiency that it is opened so that key insert in first opening of housing, thereby avoid starter motor in the mower charging.For what those of ordinary skill in the art can expect easily be, this boss also can be arranged on the position of closing on pivot on second cover plate and go out, and its function that can prevent electric motor starting and battery charge equally realizes simultaneously; In addition; In other embodiment, this boss also can be other shapes, and its position on first cover plate or second cover plate is also also nonessential near pivot; Also can be arranged on a end away from pivot; Certainly need guarantee that this boss has an extending end and closes on the pivot place this moment, so can be when first or second cover plate be opened, the end of this boss can against or be close to second or first cover plate to limit its motion.

Shown in Fig. 5 D-5F, the first button spring 235 has two adjutages, and one of them adjutage (not shown) is resisted against on the housing, another adjutage, i.e. 2351 upper surfaces that are resisted against first cover plate of first elastic arm.After first cover plate 231 is opened insertion key 60; First elastic arm 2351 applies a bigger elastic force on first cover plate 231 because of the strain of the first button spring 235; And this elastic force can further affact on the key 60 through cover plate 231; So, can prevent that motor from making the key escape because of vibrations in the running.The second button spring 236 is identical with the first button spring, 235 structures, and it has second elastic arm 2361 of the upper surface that is resisted against second cover plate 232 equally and is resisted against another elastic arm 2362 (shown in Fig. 5 C) on the housing.In addition, in this embodiment, first cover plate 231 convexes with first butting section 2311 at its lower surface.Shown in Fig. 5 A, when first cover plate 231 covered, butting section 2311 was positioned at all sides of first opening 11, had prevented that further foreign matter from getting into housing through this opening; Shown in Fig. 5 B, when first cover plate 231 is opened key 60 insertions, close on the top that free-ended first butting section 2311 of cover plate can be pressed on key, prevent that further the key escape from going out first opening.Second cover plate 232 has equally in its lower surface and closes on second butting section 2321 that free end protrudes out, and can after charging plug inserts, compress on it to avoid it to be extracted by accident when the charging.

Fig. 6 A, 6B have disclosed the 4th embodiment of the present invention; Similar in the structure of safety opening-closing mechanism and the 3rd embodiment of the present invention wherein; Have equally be horizontally fixed on the pivot on the surface of shell and be enclosed within on the pivot and can around pivot rotate can hide respectively at first opening 11 on the housing and first cover plate 241 on second opening 12 and second cover plate 242.In this embodiment, first cover plate 241 and 242 of second cover plates are provided with a dividing plate 244 so that form a fixed angle between the two, and this angle is the obtuse angle.Shown in Fig. 6 A; When first cover plate 241 is opened and after key 60 inserts; Second cover plate 242 covers just on second opening 12; And because the restriction of dividing plate 244, second cover plate 242 can't be opened, and charging plug is the rechargeable battery charging through second opening and with charging socket to fetching when so can avoid motor rotation.Certainly, conversely, after charging plug inserts, first cover plate will hide on first opening and key can't be inserted, thus starter motor when avoiding charging.In this embodiment, make first cover plate 241 and 242 of second cover plates be a fixed angle, certainly, also can pass through other modes,, guarantee that angle between the two fixes as passing through first cover plate and the integrated mode of second cover plate through dividing plate 244 is set.In addition, in this embodiment, the angle between first and second cover plates is the obtuse angle; In other embodiments, this angle also can be right angle even acute angle, though when key or charging plug insert in this case; Second cover plate or first cover plate can't cover second opening or first opening fully; And its meeting and surface of shell interval certain angle, but this angle is not sufficient to make the insertion of charging plug or key, and can avoid motor rotation and two functions of battery charge to realize simultaneously equally.In this embodiment; For guaranteeing that key can escape when the machine operation; Safety opening-closing mechanism comprised equally with the 3rd embodiment in identical button spring 245 is set and is resisted against the elastic arm 2451 on first cover plate 241, and be convexly equipped with butting section 2411 at cover plate 241 free ends.

Fig. 7 A-7G has disclosed the 5th embodiment of the present invention; In this embodiment; Shown in Fig. 7 D and 7E; On housing 10, be provided with a fan-shaped sunk area, first opening 11 and second opening 12 are formed on the surface of shell in this sunk area, and housing forms respectively near first retaining wall 131 of second opening 12 with near second retaining wall 132 of first opening 11 in two radial side of this sector region.Be provided with a through hole 14 at the home position place of this fan-shaped sunk area, this through hole week side be recessed to form a groove 15, this groove comprise a circular portion and with the long and narrow part of rounded portions phase-splitting tangent.Cooperation is with reference to shown in Fig. 7 F and the 7G, and safety opening-closing mechanism comprises a cover plate 251 and a button spring 255.It is fan-shaped that cover plate also is; But the angle of its covering of the fan is less than the angle of the fan-shaped sunk area of housing; Convex with the sleeve pipe 254 identical with groove 15 shapes of housing 10 at the home position place of fan-shaped cover plate 251; This sleeve pipe have a circular portion 2542 and with the long and narrow part 2541 of rounded portions phase-splitting tangent, and protrude out a cylindrical sleeve 253 straight down in the circular portion central position, be provided with screw thread in the sleeve.Button spring 255 has from the body top and the bottom extend horizontally away and last elastic arm of roughly at right angles distribution 2551 and following elastic arm 2552.Shown in Fig. 7 D and 7E, during installation, earlier button spring 255 is placed in the groove 15 of housing, wherein the latter half of the body of button spring 255 is housed in respectively in the circular portion and long and narrow part of groove 15 with following elastic arm 2552; Then; Lid 251 lids are put on housing 10; The sleeve 254 of lid is along the through hole 14 that extends through housing perpendicular to the direction of surface of shell, circular portion 2542 and 2541 corresponding respectively the first half and last elastic arms 2551 of accommodating the body of button spring 255 of long and narrow part of sleeve 254; At last, a screw 26 is gone in the sleeve 253 of lid 251 through the thread connecting mode group from housing 10 belows.Because the diameter of the head of screw is greater than the diameter of the through hole of housing, so can avoid lid in rotation process or when machine operation, upwards to break away from housing because of vibrations in this way.

Shown in Fig. 7 A, not work and battery when uncharged when motor, cover plate 251 can cover fully and overlay on first opening 11 and second opening 12, so can avoid foreign matter extraneous when mower does not use to get in the housing.When the needs starter motor, the long and narrow part 2541 that the user stirs sleeve pipe 254 makes cover plate 251 around pivot, in this embodiment, is sleeve 253, is rotated clockwise to itself and first retaining wall, 131 position contacting places, and is as shown in Figure 7.At this moment, first opening exposes for key 60 and inserts starter motor, and second opening 12 is covered by cover plate, can't let charging plug insert to rechargeable battery and charge.At this moment; The last elastic arm of button spring is pressed on the wall near key one side of the long and narrow part of sleeve pipe in elasticity under the effect of restoring force; And since cover plate 251 and key 60 against; So the elastic acting force of button spring is delivered on the key 60, thereby guarantee that key firmly is housed in the housing and can be because of motor vibrations escape.When cover plate 251 is rotated counterclockwise itself and the second retaining wall position contacting place; Shown in Fig. 7 B; Second opening exposes and inserts for charging plug 72 that to come be the rechargeable battery charging, and 11 of first openings are covered by cover plate and make key can't insert starter motor.In addition; The last elastic arm of button spring is pressed on the wall near charging plug one side of the long and narrow part of sleeve pipe in elasticity under the effect of restoring force; And this elastic force further is delivered on the charging plug, thereby guarantees charging plug firmly to be housed in the housing and can accident not come off.In this embodiment, the rotation that the sidewall of the sunk area through housing limits cover plate all opens first opening and second opening to avoid lid because of rotating excessively.Certainly, be that the rotation that obstacles such as projection limit cover plate also can directly be set on housing for what those of ordinary skill in the art can expect easily.In addition; In other embodiments, the shape of this cover plate is not limited in covering of the fan, also can be triangular in shape, square etc. other configurations; This moment, the pivot center can be arranged on its summit; Also can establish at the center point or other positions, because the conversion of these structures is conspicuous for those of ordinary skill in the art, so the applicant no longer gives unnecessary details at this.

In addition; In the 6th embodiment of the present invention shown in Fig. 8 A, 8B; For what those of ordinary skill in the art can expect easily be, can perhaps change the position of sleeve pipe 264, make button spring 265 only can hide first opening 11 at the nature lower cover through the covering of the fan angle that reduces cover plate 261 with respect to cover plate 261; At this moment, do not need rotating plate can directly insert charging plug 72.And when key 60 inserted, cover plate 261 can hide second opening 12 to avoid the insertion of charging plug.

Mower of the present invention only uses an electrical switch, and the cooperation through this switch and key gets final product starter motor; Simultaneously; Its housing of mower of the present invention is provided with safety opening-closing mechanism; This mechanism supplies first opening that key inserts or second opening that supplies charging plug to insert through opening with one the mode of selecting with respect to the motion of housing, thereby prevents that motor from rotating and two kinds of functions of battery charge realize to guarantee safety requirements simultaneously; And, realize the simple in structure of this safety requirements, low cost of manufacture, and easy to use.In addition; This safety opening-closing mechanism has elastic components such as button spring or spring; This elastic component can with key or the charging plug of cover plate resilient abutment to block insertion of safety opening-closing mechanism; And, on the cover board further be provided with the butting section against the key or the charging plug that insert, thereby the vibrations that produce when avoiding because of motor rotation make key escape or charging plug accidental.In addition, cover plate can cover when mower does not use and be uncharged and overlay on first opening and second opening, thereby reduces foreign matter gets into housing through opening chance.

Claims (6)

1. mower; Comprise housing, the operating grip that is connected with housing, be installed in the motor in the housing and be fixedly mounted on the charging socket that supplies the external charging plug to peg graft when being used for the switch of drive motors and the electric power system charging of giving motor in the housing, wherein the position to inductive switch and charging socket offers first opening and second opening on housing; It is characterized in that: mower further comprises safety opening-closing mechanism; This safety opening-closing mechanism comprises the cover plate that is slidably mounted on the surface of shell; Offer on the cover plate can with first opening over against the 3rd opening with can with second opening over against the 4th opening, and the spacing between first opening and second opening is not equal to the spacing between the 3rd opening and the 4th opening.

2. mower according to claim 1; It is characterized in that: above-mentioned safety opening-closing mechanism also comprises first spring that is installed in cover plate one side along the glide direction of cover plate; When cover plate slide into first opening and the 3rd opening over against the position time, said first spring is in contraction state.

3. mower according to claim 2; It is characterized in that: above-mentioned safety opening-closing mechanism also comprises second spring of the opposite side that is installed in said cover plate one side; When cover plate slide into second opening and the 4th opening over against the position time, second spring is in contraction state.

4. mower according to claim 1 is characterized in that: said first opening is to the inductive switch setting, the corresponding charging socket setting of said second opening.

5. mower according to claim 4; It is characterized in that: said switch comprises body, extends into intrinsic push shaft and is hubbed on the driving rod on the push shaft; Said driving rod can its with the residing plane of push shaft in rotate around pivoting point, above-mentioned first opening is right against said driving rod.

6. mower according to claim 5 is characterized in that: this mower further comprises key, and this key inserts first opening and is resisted against the rotation of an end of driving rod with the restriction driving rod.

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