CN112772109A

CN112772109A - Grass cutter

Info

Publication number: CN112772109A
Application number: CN201911081693.0A
Authority: CN
Inventors: 乔勇; 袁剑波
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2021-05-11

Abstract

The invention discloses a mower, which has a horizontal working state and a vertical storage state, and comprises: the lawn mower comprises a mower body and a protection switch, wherein the protection switch is arranged at one end of the mower body, which is close to the ground, and the protection switch is suitable for being triggered to disconnect a control loop of the mower when the mower is in an upright storage state. According to the mower provided by the embodiment of the invention, the protection switch is arranged and is triggered when the mower is in the vertical storage state, so that the mower can be prevented from being started up after misoperation, and the use safety of the mower can be improved.

Description

Grass cutter

Technical Field

The invention relates to the technical field of household machinery, in particular to a mower.

Background

In the related art, a lawn mower is used for trimming a lawn, and has an operating state for trimming the lawn and a storage state for stopping the lawn for storage.

However, in order to improve the convenience of use, the stop button of the conventional lawn mower is provided at a position that is easily touched by an operator, and in a storage state, the stop button may be touched by mistake, so that the lawn mower in the storage state is turned on, and a potential safety hazard exists.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the invention is to propose a mower that is safer to use.

According to the embodiment of the invention, the mower has a horizontal working state and a vertical storage state, and comprises: the lawn mower comprises a mower body and a protection switch, wherein the protection switch is arranged at one end of the mower body, which is close to the ground, and the protection switch is suitable for being triggered to disconnect a control loop of the mower when the mower is in an upright storage state.

According to the mower provided by the embodiment of the invention, the protection switch is arranged and is triggered when the mower is in the vertical storage state, so that the mower can be prevented from being started up after misoperation, and the use safety of the mower can be improved.

In some embodiments, the trigger portion of the protection switch is adapted to rest on the ground when the lawn mower is in the upright storage state.

In some embodiments, the lawn mower further comprises: the first trigger piece is arranged below the trigger part and connected with the mower body, and when the mower is in a vertical storage state, the trigger piece moves towards the trigger part and triggers the protection switch.

Further, the first trigger includes: trigger the board and first driving piece, reset the piece, first driving piece is suitable for to drive trigger the board motion, reset the piece and set up between first driving piece and trigger the piece, first driving piece optionally end on ground.

Optionally, the protection switch is configured as an inductive switch adapted to sense a displacement of the second driver and to be triggered when the displacement exceeds a threshold value

According to an embodiment of the present invention, a lawnmower having a horizontal working state and a vertical storage state includes: lawn mower body, protection switch sets up on the lawn mower body, the second triggers the piece and includes: the trigger piece body, clamp plate and second driving piece, the clamp plate sets up on the protection switch, but the second driving piece movably sets up in the trigger piece body, and be suitable for towards or keep away from the clamp plate motion in order to drive the clamp plate towards or keep away from the trigger part motion, in order to disconnect the control circuit of lawn mower optionally.

Further, an arc-shaped groove is formed in the trigger body, the second driving piece is selectively located at one end or the other end of the arc-shaped groove under the action of gravity, and when the second driving piece is located at one end of the arc-shaped groove, the protection switch is triggered.

In some embodiments, the protection switch is configured as an inductive switch adapted to sense displacement of the first driver and to be triggered when the displacement exceeds a threshold value.

In some embodiments, the protection switch is configured as an inductive switch adapted to sense displacement of the second driver and to be triggered when the displacement exceeds a threshold value.

Optionally, the inductive switch is adapted to send a control signal towards a controller, the controller being adapted to control the motor to be de-energized.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a first embodiment according to the present invention;

FIG. 2 is an enlarged schematic view of area A of FIG. 1;

FIG. 3 is a schematic diagram of a second embodiment according to the present invention;

FIG. 4 is an enlarged schematic view of region B of FIG. 3;

FIG. 5 is a schematic illustration of a state according to a third embodiment of the invention;

FIG. 6 is a schematic illustration of another state according to a third embodiment of the present invention;

FIG. 7 is a schematic illustration of a fourth embodiment according to the present invention;

fig. 8 is an enlarged schematic view of region C in fig. 7.

Reference numerals:

the operation of the lawn mower 100 is,

the mower body 10, the guide groove 11,

the protection switch 20, the trigger part 21,

a first trigger member 30, a trigger plate 31, a first driving member 32, a reset member 33,

a second trigger member 40, a pressure plate 41, a second driving member 42, a trigger member body 43 and an arc-shaped groove 431.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.

A lawn mower 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 7.

As shown in fig. 1, according to a lawn mower 100 of an embodiment of the present invention, the lawn mower 100 has a horizontal working state and a vertical storage state, and the lawn mower 100 includes: the lawn mower comprises a mower body 10 and a protection switch 20, wherein the protection switch 20 is arranged at one end of the mower body 10 adjacent to the ground, and the protection switch 20 is suitable for being triggered to disconnect a control circuit of the lawn mower 100 when the lawn mower 100 is in an upright storage state.

Specifically, in some embodiments, the protection switch 20 is connected to the control circuit of the lawn mower 100 and is configured as a normally closed switch, so that when the protection switch 20 is triggered, the control circuit is opened, and when the lawn mower 100 is in a horizontal state, the protection switch 20 is in a closed state, and an operator can rotate the mowing knife of the lawn mower 100 to perform mowing operation only by triggering a working switch of the lawn mower 100 arranged adjacent to the operator; when the mower 100 is in the vertical storage state, the operator turns off the working switch of the mower 100, and the protection switch 20 is triggered, so that when a subsequent misoperation occurs or the working switch is touched by mistake, the protection switch 20 already turns off the control circuit, and the mower blade rotates after the misoperation is avoided, thereby improving the use safety of the mower 100.

In other embodiments, the protection switch 20 may send a control signal to ensure that the motor is powered off through the control signal, and then when the lawn mower 100 is in the horizontal working state, the protection switch 20 is not triggered, so that the lawn mower 100 may work normally, when the lawn mower 100 is in the vertical storage state, the operator turns off the working switch of the lawn mower 100, and when a subsequent misoperation occurs or the working switch is touched by mistake, the control signal sent by the protection switch 20 may ensure that the motor does not rotate, so as to improve the safety of the lawn mower 100 in use.

Note that the malfunction includes: when the mower 100 is stored in the upright state, the user forgets to turn off the operating switch of the mower 100 and turns off the operating switch, and the operating switch is turned on again due to accidental touch.

In summary, according to the lawn mower 100 of the embodiment of the invention, the protection switch 20 is arranged, and the protection switch 20 is triggered when the lawn mower 100 is in the vertical storage state, so that the lawn mower 100 can be prevented from being powered on after misoperation, and the use safety of the lawn mower 100 can be improved.

Referring now to fig. 1-8, the mower 100 of the present invention is specifically described in four specific embodiments.

As shown in fig. 1 and 2, in the first embodiment of the present invention, the trigger part 21 of the protection switch 20 is stopped against the ground when the lawn mower 100 is in the upright storage state.

In other words, the protection switch 20 is configured as a push switch, and the push switch 20 is triggered to disconnect the control circuit of the lawn mower 100 when the lawn mower 100 is in the upright storage state.

That is, in the first embodiment, the protection switch 20 is configured as a push switch that is a normally closed switch, and further, when the lawn mower 100 is in the upright storage state, the push switch is switched to the off state to ensure that the lawn mower 100 does not work even by a touch or an operation.

It will be appreciated that in the first embodiment, the protection switch 20 is disposed at one end of the mower 100 adjacent to the ground when in the upright storage state, and the trigger portion 21 of the protection switch 20 directly abuts against the ground to open the control circuit. Thereby achieving the technical effect of improving the safety of the lawn mower 100, which will not be described in detail herein.

It is understood that the protection switch 20 is configured as a push switch, and that the protection switch 20 is configured as a mechanically triggered switch, and can be triggered by pushing or other mechanical movement.

As shown in fig. 3 and 4, in the second embodiment of the present invention, the lawn mower 100 further includes: the protection switch 20 is located at one end of the mower 100 close to the ground, the first trigger 30 is arranged below the trigger part 21 and connected with the mower body 10, and when the mower 100 is in the vertical storage state, the first trigger 30 moves towards the trigger part 21 and triggers the protection switch 20.

That is, in the second embodiment, the first trigger 30 is further provided between the protection switch 20 and the ground, and the protection switch 20 is still configured as a push switch. At least a part of the first trigger 30 can move towards the trigger part 21 of the protection switch 20 under the thrust action of the ground, and further push the trigger part 21 to trigger the protection switch 20. The technical effects are the same as those of the above embodiments, and are not described herein again.

The second embodiment is different from the first embodiment in that a first trigger 30 is further provided between the protection switch 20 and the ground in the second embodiment when the lawn mower 100 is in the upright storage state.

In the particular embodiment shown in fig. 3 and 4, the first trigger 30 includes: the trigger plate 31 and the first driving member 32, the first driving member 32 is adapted to drive the trigger plate 31 to move, and the first driving member 32 selectively stops against the ground.

Thus, the trigger plate 31 presses the trigger portion 21 again to trigger the protection switch 20 by the first driving member 32 selectively stopping against the ground moving upward to move the trigger plate 31.

It can be understood that, the first trigger 30 separates the protection switch 20 from the ground, so as to improve the service life of the protection switch 20, and when the protection switch 20 is disassembled and replaced, the maintenance of the mower 100 is simpler and more convenient.

Further, the first trigger 30 further includes: a reset member 33, the reset member 33 being disposed between the first driving member 32 and the trigger plate 31. Therefore, the first driving member 32 is driven to reset by the resetting member 33, one end of which abuts against the first driving member 32, and the other end of which abuts against the trigger plate 31, so that when the mower 100 is in a horizontal working state, the protection switch 20 is prevented from being triggered, and the working stability of the mower 100 can be improved.

Referring to fig. 4, the mower body 10 is provided with a guide groove 11, and the trigger plate 31 is slidably disposed in the guide groove 11. Accordingly, the movement of the trigger plate 31 is guided by the guide groove 11, and the operation stability of the first trigger 30 can be further improved.

That is, the second embodiment is different from the first embodiment in that a first trigger 30 is provided below the push switch, and the push switch is triggered by the first trigger 30.

As shown in fig. 5 and 6, in the third embodiment, the lawnmower 100 has a horizontal working state and a vertical storage state, and the lawnmower 100 includes: mower body 10, protection switch 20 and second trigger 40, second trigger 40 includes: the mower comprises a trigger body 43, a pressing plate 41 and a second driving piece 42, wherein the pressing plate 41 is arranged on the pressing switch, and the second driving piece 42 is movably arranged in the trigger body 43 and is suitable for moving towards or away from the pressing plate 41 to drive the pressing plate 41 to move towards or away from the trigger part 21 so as to selectively disconnect a control circuit of the mower 100.

In other words, in the third embodiment, the trigger body 43 is fixed to the mower body 10, the second driving member 42 is provided in the trigger body 43, and the second driving member 42 is adapted to move toward the pressing plate 41 and press the trigger 21 through the pressing plate 41.

In the third embodiment, the push switch, the second driving member 42 and the pressing plate 41 are all disposed in the trigger body 43, and one end of the pressing plate 41 is connected to the push switch, and the free end is selectively moved toward or away from the push switch. On the premise that the same technical effect as the first embodiment can be achieved, the structure of the second trigger 40 of the third embodiment is more reasonable, and the service lives of the second trigger 40 and the push switch can be prolonged.

In other words, in the third embodiment, the second trigger 40 and the protection switch 20 can be disposed at any positions, and are not limited to the end of the mower body 10 adjacent to the ground.

As shown in fig. 6, an arc-shaped groove 431 is formed in the trigger body 43, the second driving member 42 is selectively located at one end or the other end of the arc-shaped groove 431 under the action of gravity, and when the second driving member 42 is located at one end of the arc-shaped groove 431, the push switch is triggered.

Specifically, when the mower 100 is in the horizontal working state, the second driving element 42 is located at one end of the arc-shaped groove 431 away from the push switch, and the second driving element 42 is limited under the action of gravity, so that the protection switch 20 can be prevented from being triggered in the horizontal working state; when the lawn mower 100 is in the vertical storage state, the second driving member 42 is located at one end of the arc-shaped groove 431, which is adjacent to the push switch, and the second driving member 42 is always abutted against the pressing plate 41 under the action of gravity, so that the working stability of the trigger 30 can be improved.

It will be appreciated that the pressing plate 41 is configured as an elastic pressing piece, one end of which is connected to the push switch, and the other end of which is selectively moved toward or away from the trigger part 21 and is provided with a protrusion protruding toward the driving member 32. This makes it possible to increase the response speed of the pressure plate 41 and to ensure that the protection switch 20 is not triggered when the lawnmower 100 is in the horizontal operation state, thereby further improving the operation stability of the lawnmower 100.

It should be noted that the third embodiment is different from the second embodiment in that the mower 100 falls down to compress the second trigger 40 so as to trigger the push switch in the second embodiment, and the second driving member 42 of the second trigger 40 triggers the push switch under its own weight in the third embodiment.

As shown in fig. 1-6, according to some embodiments of the present invention, the first drive member 32 and the second drive member 42 are each configured as balls. Thus, the balls can roll in the guide grooves 11 or the arc-shaped grooves 431, and the second driving member 42 does not get stuck during the movement.

In a fourth embodiment, as shown in fig. 7 and 8, the protection switch 20 is configured as an inductive switch adapted to sense a displacement of the first or second driving

member

32, 42 and to be triggered when the displacement exceeds a threshold value.

That is, in the fourth embodiment, the protection switch 20 is configured as an inductive switch, and the inductive switch is adapted to sense the displacement of the first driving member 32 of the first triggering member 30 in the second embodiment or sense the displacement of the second driving member 42 of the second triggering member 40 in the third embodiment, so that after the first driving member 32 or the second driving member 42 generates the displacement and the displacement meets the threshold value of the triggered inductive switch, the inductive switch sends out a control signal to the controller, so as to control the control loop to be disconnected, and the same technical effects as the first embodiment can also be achieved.

It is understood that the inductive switch is any one of a hall sensor, a displacement sensor, and a relay.

It should be noted that when the inductive switch is configured as a relay, the driving member 32 is configured as a magnetic member, and the relay can be triggered by the magnetic member.

Wherein, inductive switch is suitable for sending control signal towards the controller, and the controller is suitable for controlling the motor outage.

That is, the inductive switch can sense the displacement of the driving member 32, so as to send out a control signal, and after the control signal is received by the controller, the controller sends out an instruction according to the control signal, so as to control the motor to be powered off.

It is to be understood that the fourth embodiment is different from the first to third embodiments described above in that the inductive switch in the fourth embodiment is configured as a sensor.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A lawnmower having a horizontal operative position and a vertical storage position, the lawnmower comprising:

a mower body;

the protection switch is arranged at one end of the mower body, which is adjacent to the ground, and is suitable for being triggered to disconnect a control circuit of the mower when the mower is in the vertical storage state.

2. The lawnmower of claim 1, wherein the trigger portion of the protection switch is adapted to rest on the ground when the lawnmower is in the upright storage state.

3. The lawnmower of claim 2, further comprising: the first trigger piece is arranged below the trigger part and connected with the mower body, and when the mower is in a vertical storage state, the trigger piece moves towards the trigger part and triggers the protection switch.

4. The mower of claim 3 wherein said trigger comprises: trigger plate and first driving piece, reset the piece, first driving piece is suitable for to drive trigger plate motion, reset the piece setting with trigger between the piece, first driving piece optionally end to on ground.

5. The lawnmower of claim 1, wherein the protection switch is configured as an inductive switch adapted to sense displacement of the second drive member and to be triggered when the displacement exceeds a threshold value.

6. A lawnmower having a horizontal operative position and a vertical storage position, the lawnmower comprising:

a mower body;

a protection switch arranged on the mower body,

a second trigger, the trigger comprising: the trigger piece body, clamp plate and second driving piece, the clamp plate sets up on the protection switch, but the second driving piece movably sets up in the trigger piece body, and be suitable for towards or keep away from the clamp plate motion in order to drive the clamp plate towards or keep away from the trigger part motion, in order to optionally break off the control circuit of lawn mower.

7. The mower of claim 6 wherein the trigger body defines an arcuate slot therein, the second drive member is selectively positioned under gravity at one or the other end of the arcuate slot, and the protection switch is triggered when the second drive member is positioned at one end of the arcuate slot.

8. A lawnmower as claimed in claim 1, wherein the protection switch is configured as an inductive switch adapted to sense displacement of the first drive member as claimed in claim 4 and to be triggered when the displacement exceeds a threshold value.

9. The lawnmower of claim 6, wherein the protection switch is configured as an inductive switch adapted to sense displacement of the second drive member and to be triggered when the displacement exceeds a threshold value.

10. A lawnmower as claimed in claim 8 or claim 9, wherein the inductive switch is adapted to issue a control signal towards a controller adapted to control the motor to de-energise.