CN211672118U - Straw burning machine - Google Patents

Abstract

The utility model discloses a grass burning machine belongs to electric tool technical field, including casing, battery package, motor, flabellum and the core that generates heat, the motor just is used for driving the flabellum in locating the casing, and the core that generates heat is located on the casing, grass burning machine still includes first switch, second switch and driving lever, and first switch locates in the casing and the electricity connect in the motor, and the second switch locates in the casing and the electricity connect in the core that generates heat, but on the casing of locating of driving lever round trip movement, is equipped with the first portion that triggers that corresponds with first switch on the driving lever and triggers the portion that triggers with the second that the second switch corresponds, acts on first switch and second switch through first portion that triggers and second portion that triggers when the driving lever removes. Utilize a driving lever to switch over two switches simultaneously, improve the operation convenience, the user of being convenient for carries out effective operation, also can effectively avoid the user to omit the condition of operating one of them switch, helps improving the safety in utilization of burning grass machine.

Description

Straw burning machine

Technical Field

The utility model relates to an electric tool technical field especially relates to a burn grass machine.

Background

With the development of science and technology, the types and styles of electric tools are more and more, the functions are more and more diversified, and the electric tools also become common tools in modern production and life. The grass burning machine is an electric tool for realizing the purpose of weeding by baking weeds by utilizing high-temperature airflow, generally comprises a casing, a battery pack, a motor, fan blades, a heating core and other components, wherein the heating core is electrified to generate heat during working, and the motor drives the fan blades to rotate at high speed to form the high-temperature airflow blown out from back to front. In order to control the start and stop of the grass burning machine, a switch for controlling the on-off of the motor and the heating core is generally arranged in the machine body. In order to facilitate the operation of users, the power on and off of the motor and the heating core in some grass burning machines are controlled by the same switch, and the switch needs to bear larger current, so that the requirement on the switch is higher, and the cost of the switch is higher. If adopt two switches to control the break-make electricity of motor and core that generates heat respectively, the user can only successively switch over two switches respectively when the operation, and the inconvenient and easy omission of operation is unfavorable for guaranteeing the safety in utilization of organism.

SUMMERY OF THE UTILITY MODEL

In order to solve the shortcoming and the deficiency that exist among the above-mentioned prior art, the utility model provides a machine for burning grass adopts two switches to control the break-make electricity of motor and the core that generates heat respectively, utilizes the driving lever that can round trip movement to act on two switches simultaneously.

In order to realize the technical purpose, the utility model provides a pair of machine of burning grass, including casing, battery package, motor, flabellum and the core that generates heat, the motor is located in the casing and is used for driving the flabellum, and the core that generates heat is located on the casing, the machine of burning grass still includes first switch, second switch and driving lever, and first switch locates in the casing and the electricity connect in the motor, and the second switch is located in the casing and the electricity connect in the core that generates heat, but on the casing of locating of driving lever round trip movement, be equipped with on the driving lever with first switch corresponding first trigger portion and with the second trigger portion that the second switch corresponds, trigger portion through first trigger portion and second when the driving lever removes and act on switching first switch and second switch.

Preferably, the first switch and the second switch are arranged side by side along the moving direction of the shift lever, and the first triggering portion and the second triggering portion are arranged at intervals along the moving direction of the shift lever.

Preferably, the first switch is provided with a first button, and the first trigger part is a trigger inclined plane corresponding to the first button; and/or a second button is arranged on the second switch, and the second trigger part is a trigger boss corresponding to the second button.

Preferably, a support groove extending along the moving direction of the deflector rod is arranged on the inner wall of the machine shell, and the side part of the deflector rod along the moving direction is embedded in the support groove; and/or the shifting rod is provided with a shifting block, and the shell is provided with a through hole for the shifting block to extend out of the shell.

Preferably, an in-place structure is arranged between the shifting lever and the shell and comprises a protrusion arranged on the shifting lever and a pit arranged on the inner wall of the shell, and the shifting lever moves in place when the protrusion is embedded in the corresponding pit when moving.

Preferably, the shifting lever is provided with an elastic convex strip, and the protrusion is arranged on the convex strip; and/or a plurality of convex ribs extending along the moving direction of the deflector rod are arranged on the inner wall of the machine shell, and the pits are arranged on the convex ribs and are arranged at intervals along the moving direction of the deflector rod.

Preferably, the grass burning machine further comprises a battery pack and a battery seat, the battery seat is connected to the machine shell, the battery pack is detachably connected to the battery seat, a conductive piece is arranged on the battery seat, the first switch is arranged on the circuit of the motor and electrically connected to the conductive piece, and the second switch is arranged on the circuit of the heating core and electrically connected to the conductive piece.

Preferably, the battery holder is connected to the rear end of the casing, the grass burning machine further comprises an extension rod, the extension rod is connected to the battery holder through a support, the front end of the support is provided with an inserting column and a tongue piece located outside the inserting column, the tongue piece has elasticity and is provided with a clamping block, the battery holder is provided with a jack for inserting the inserting column, and the outer wall of the battery holder is provided with a clamping groove for clamping the clamping block.

Preferably, be equipped with the constant head tank on the outer wall of inserting the post, be equipped with location portion on the inner wall of jack, location portion inlays in the constant head tank when inserting the post and inserting the jack.

Preferably, a support handle is formed on the casing, and an open slot is formed between the support handle and the casing.

After the technical scheme is adopted, the utility model has the advantages of as follows:

1. the utility model provides a burn grass machine improves the switch structure of current burn grass machine, and the motor is controlled with the switch that generates heat the core adoption difference, is convenient for reduce the requirement and the cost of switch. The driving lever is provided with a first trigger part and a second trigger part, and the driving lever can synchronously switch a first switch and a second switch through the first trigger part and the second trigger part when moving back and forth, so that the purpose of synchronously electrifying or powering off or shifting the motor and the heating core is realized. Utilize a driving lever to act on two switches simultaneously, improve the operation convenience, the user of being convenient for carries out effective operation, also can effectively avoid the user to omit the condition of operating one of them switch, helps improving the safety in utilization of burning grass machine.

2. The first switch and the second switch are arranged side by side along the moving direction of the shifting lever, the first trigger part and the second trigger part are arranged at intervals along the moving direction of the shifting lever, and the arrangement modes of the two switches and the arrangement modes of the two trigger parts are reasonably arranged, so that the structural requirement of synchronously switching the two switches when the shifting lever moves back and forth is met.

3. First trigger part preferred sets up to triggering the inclined plane, and the second trigger part is preferred to be set up to triggering the boss, rationally sets up the concrete structure of two trigger parts, is convenient for reduce the structure degree of difficulty of driving lever when satisfying operation requirement.

4. The in-place structure is additionally arranged between the shifting rod and the shell, when the protrusion on the shifting rod is embedded into the corresponding concave pit on the inner wall of the shell, the clicking sound can be generated to indicate that the shifting rod is moved in place, so that a user can conveniently identify whether the shifting rod is moved in place or not through hand feeling and sound, the condition that the shifting rod is not moved in place or is moved excessively is avoided, and the effectiveness and the safety of operation can be improved. In addition, the deflector rod can be effectively positioned by matching the bulges and the pits, so that the stability of the deflector rod is improved, and the working stability of the whole machine is improved.

5. The pit is located along the protruding muscle that the driving lever moving direction extends, and on elastic sand grip was located to the arch, rationally set up pit and bellied concrete position that sets up, avoid causing the hindrance to the removal of driving lever when satisfying the operation requirement.

6. Through the height of extension rod increase organism, be convenient for reduce the degree of difficulty of user when using the machine that burns grass. The extension rod is connected to the battery holder through the support, the support can be dismantled through the cooperation of inserting post and jack and the cooperation of fixture block and draw-in groove and be connected in the battery holder, and the cooperation simple structure between extension rod and the fuselage is convenient for user quick assembly disassembly.

7. When the extension rod is connected to the battery holder, the positioning part on the inner wall of the jack is embedded into the positioning groove on the plug column, so that the extension rod and the battery holder are positioned in the circumferential direction, the body of the machine body is prevented from rotating relative to the extension rod when the machine body works, and the structural stability and the safety of the machine body during working are improved.

8. The supporting handle formed on the shell can be used as a supporting frame when the machine body works, so that the operation difficulty of a user is reduced conveniently. An open slot is formed between the supporting handle and the casing, and the open slot can be used for hanging the grass burning machine and is convenient for placing the grass burning machine.

Drawings

FIG. 1 is an exploded view of a grass burning machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of an internal structure of a grass burning machine according to an embodiment of the present invention;

FIG. 3 is an exploded view of the first switch, the second switch and the shift lever of the grass burning machine according to the embodiment of the present invention;

FIG. 4 is a schematic structural view of a deflector rod of a grass burning machine according to an embodiment of the present invention;

FIG. 5 is a schematic view of a partial structure of a housing of a grass burning machine according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a support in a grass burning machine according to an embodiment of the present invention;

fig. 7 is a schematic view of a partial structure of a battery holder in a grass burning machine according to an embodiment of the present invention.

In the figure, 100-shell, 101-supporting rib, 102-supporting groove, 103-notch, 104-pit, 105-convex rib, 110-left shell, 120-right shell, 130-supporting handle, 140-open slot, 200-motor, 300-fan blade, 400-heating core, 510-first switch, 511-first button, 512-elastic sheet, 520-second switch, 521-second button, 530-deflector rod, 531-trigger inclined plane, 532-trigger boss, 533-deflector block, 534-protrusion, 535-raised strip, 610-battery seat, 611-left seat body, 612-right seat body, 613-semi-cylindrical groove, 614-groove, 615-positioning lug, 620-conductive piece, 621-conductive terminal, 700-dome, 800-metal cover, 910-extension rod, 920-support, 921-plug column, 922-tongue piece, 923-clamping block, 924-wrench block and 925-positioning groove.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings and are used merely for convenience in describing and simplifying the invention, and do not indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be considered as limiting the invention.

Example one

As shown in fig. 1 to 7, a grass burner provided by the embodiment of the present invention includes a casing 100, a battery pack, a motor 200, fan blades 300 and a heat generating core 400, wherein the motor 200 is disposed in the casing and used for driving the fan blades 300, and the heat generating core 400 is disposed on the casing. The grass burning machine further comprises a first switch 510, a second switch 520 and a shifting lever 530, wherein the first switch 510 is arranged in the machine shell and is electrically connected to the motor 200, the second switch 520 is arranged in the machine shell and is electrically connected to the heating core 400, the shifting lever 530 can be arranged on the machine shell in a reciprocating manner, a first triggering portion corresponding to the first switch and a second triggering portion corresponding to the second switch are arranged on the shifting lever 530, and the shifting lever 530 acts on the first switch 510 and the second switch 520 through the first triggering portion and the second triggering portion when moving.

In this embodiment, the casing 100 includes a left housing 110 and a right housing 120 fixed together. The grass burning machine further comprises a flow guide cover 700, the flow guide cover 700 is arranged in the machine shell 100 and is axially arranged along the front-back direction, the motor 200 is arranged in the flow guide cover 700, the fan blade 300 is arranged at the rear end in the flow guide cover 700 and is fixedly sleeved on a motor shaft of the motor 200, and an air inlet hole located behind the fan blade 300 is formed in the machine shell 100. The heat generating core 400 is disposed at the front side of the air guide sleeve 700, and the front end of the heat generating core 400 extends out of the casing 100, and the front end of the casing is provided with a metal cover 800 located at the periphery of the heat generating core 400.

The grass burner is preferably powered by a battery pack, and further comprises a battery pack and a battery holder 610, wherein the battery holder 610 is fixedly connected to the rear end of the casing 100, and the battery pack is detachably connected to the battery holder 610. The battery holder 610 is provided with a conductive member 620 matched with the battery pack, and the conductive member 620 is provided with a conductive terminal 621. The motor 200 is electrically connected to the conductive terminal 621 through a wire, and the first switch 510 is disposed on a circuit of the motor electrically connected to the conductive terminal. The heat generating core 400 is also electrically connected to the conductive terminal 621 through a conductive wire, and the second switch 520 is disposed on the circuit where the heat generating core is electrically connected to the conductive terminal.

Referring to fig. 3, in order to allow the lever 530 to act on two switches at the same time, the first switch 510 and the second switch 520 are disposed side by side along the moving direction of the lever 530, and the first trigger and the second trigger are disposed at intervals along the moving direction of the lever 530. In this embodiment, the first switch and the second switch are fixed in the housing through the pillar holes, the shift lever 530 is disposed on the housing 100 in a manner of moving forward and backward, and the first switch 510 and the second switch 520 are disposed side by side in the front-back direction at intervals. The first switch 510 is provided with a first button 511 and a spring 512 for pressing the first button, one end of the spring 512 is fixed on the first switch, and the other end is suspended. The first switch 510 is a normally open switch, and when the elastic piece 512 is pressed to press the first button 511, the first switch 510 is turned off, and the motor 200 is in a power-off state. When the elastic piece 512 releases the first button 511, the first switch 510 is turned on, and the motor 200 can be powered on to operate. The second switch 520 is provided with a second button 521, and the second switch 520 is a normally open switch. When the second button 521 is pressed, the second switch 520 is turned on, and the heat generating core 400 can be electrically operated. When the second button 521 is released, the second switch 520 is turned off, and the heat generating core 400 stops operating.

In order to effectively press or release the first button 511 and the second button 521 during the back and forth movement of the shift lever 530, the first trigger portion is preferably provided as a trigger slope 531 corresponding to the first button, and the second trigger portion is preferably provided as a trigger protrusion 532 cooperating with the second button 521, in conjunction with fig. 4. In this embodiment, the trigger slope 531 is disposed at the rear end of the bottom surface of the shift lever 530, the trigger boss 532 is disposed at the bottom of the shift lever 530 and in front of the trigger slope, and the front end surface of the trigger boss 532 is inclined. When the grass burning machine is in a shutdown state, the trigger inclined plane 531 presses the first button 511 against the elastic sheet 512, the trigger boss 532 is separated from the second button 521, and the first switch 510 and the second switch 520 are in an off state. When the lever 530 is forced to move forward, the trigger inclined plane 531 disengages from the spring 512 to release the first button 511, the trigger boss 532 presses the second button 521, and the first switch 510 and the second switch 520 are switched from the off state to the on state.

Referring to fig. 5, in order to install the shift lever 530, the inner walls of the left and right housings 110 and 120 are respectively provided with a support rib 101 extending in the front-rear direction, a support groove 102 is formed between the support rib 101 and the casing 100, the shift lever 530 is embedded in the support groove 102 and abuts against the support rib 101 along the front-rear direction, and the trigger inclined plane 531 and the trigger boss 532 are located between the two support ribs on the housings on both sides, so as to avoid interference between the shift lever and the two switches.

In order to facilitate the user to operate the lever 530, a lever 533 protruding toward the outside of the housing 100 is provided on the lever, and a through hole of the housing is provided in the housing 100 through which the lever 533 extends. In this embodiment, the left and right housings 110 and 120 are both provided with U-shaped notches 103, and after the left and right housings are fixed together, the two notches 103 are combined to form a through opening for the dial block 533 to extend out of the housing.

In order to facilitate a user to sense whether the shift lever 530 is moved in place through hand feeling and sound, an in-place structure is further arranged between the shift lever 530 and the casing 100, the in-place structure comprises a protrusion 534 arranged on the shift lever 530 and a pit 104 arranged on the inner wall of the casing 100, and the shift lever 530 is moved in place when the protrusion 534 is embedded in the corresponding pit 104 when moved. In this embodiment, the rear end of the shift lever 530 is provided with two elastic ribs 535, the two ribs 535 extend in the front-back direction and are arranged in parallel at intervals, and the protrusion 534 is formed by partially bending the ribs 535. The inner walls of the left and right housings 110, 120 are provided with ribs 105 extending in the front-rear direction, the ribs 105 are disposed in the support grooves 102, and the pits 104 are disposed on the ribs 105. Since the shift lever 530 has a start-stop function and a shift function when moving back and forth, the plurality of the dimples 104 are provided at intervals in the front-rear direction.

In order to reduce the operation difficulty of the machine body, a support handle 130 is formed on the machine shell 100, and an open slot 140 with a closed front end and an open rear end is formed between the support handle 130 and the machine shell 100. The supporting handle 130 can be used as a supporting frame when the machine body works, and the open slot 140 can be used for hanging the grass burning machine, so that the grass burning machine is convenient to place.

The grass burner also includes an extension bar 910 removably attached to the rear end of the housing 100, the extension bar 910 being removably attached to the battery holder 610 by a support 920. The front end of the extension bar 910 is inserted into the support 920, and the extension bar and the support are fixed together by a fastener. The front end of the support 920 is provided with an inserting column 921 extending forwards and a tongue 922 located outside the inserting column 921, the tongue 922 has elasticity, a clamping block 923 is arranged on one side of the tongue facing the inserting column, and a pulling block 924 is arranged on one side of the tongue facing away from the inserting column. The battery holder 610 includes a left holder body 611 and a right holder body 612 fixed together, the left and right holder bodies 611, 612 are respectively provided with a semi-cylindrical groove 613 with an open rear end, and the outer walls of the rear ends of the left and right holder bodies are respectively provided with a groove 614. When the left and right seat bodies 611 and 612 are fixed together, the two semicylindrical grooves 613 are combined to form an insertion hole for inserting the insertion column 921, and the two grooves 614 are combined to form a clamping groove for clamping the clamping block 923.

In order to circumferentially position the support 920 and the battery holder 610, a plurality of positioning grooves 925 are formed in the outer wall of the plug 921 and extend in the front-rear direction and are spaced apart from each other, a positioning portion engaged with the positioning grooves 925 is formed in the inner wall of the semi-cylindrical groove 613, and the positioning portion is embedded in the positioning grooves 925 when the plug 921 is inserted into the insertion hole. In this embodiment, the positioning portion is specifically a positioning bump 615 disposed on the inner wall of the semi-cylindrical groove 613.

When the grass burner is in a shutdown state in a normal state, the trigger inclined plane 531 on the shift lever 530 abuts against the elastic sheet 512 to press the first button 511, the trigger boss 532 is separated from the second button 521, and the first switch 510 and the second switch 520 are both in an off state. When the force is applied to the shifting lever to move forward, the trigger inclined plane 531 is separated from the spring plate 512 to release the first button 511, the trigger boss 532 presses the second button 512, the first switch 510 and the second switch 520 are both switched on, the motor 200 and the heating core 400 can be electrified to work, and the grass burner enters a working state.

When the grass-burning machine needs to be shut down, the shifting lever 530 is forced to move backwards to a proper position, the trigger inclined plane 531 is abutted to the elastic sheet 512 to press the first button 511, the trigger boss 532 is separated from the second button 521, the first switch and the second switch are restored to an off state, and the motor 200 and the heating core 400 are powered off and stop working.

It is understood that the spring 512 of the first switch 510 may be eliminated, and the first button 511 may be directly pressed or released by the trigger slope 531.

It can be understood that the first trigger part may also adopt other reasonable structures, such as a boss, etc., and only the requirement of pressing or releasing the first button is required to be satisfied. The second trigger part can also adopt other reasonable structures, such as an inclined plane and the like, and the requirement that the second button can be pressed or loosened only needs to be met.

It can be understood that the second switch 520 is preferably a normally open type shift switch, so as to adjust the working temperature of the heating core through the shift lever, and thus adjust the temperature of the high-temperature air flow blown by the grass burning machine.

It will be appreciated that the locations of the projections and depressions in the bit structure may be interchanged.

It is understood that the positioning portion may also adopt other reasonable structures such as a positioning rib formed by extending along the front-back direction.

It is understood that the positions of the positioning portions and the positioning grooves may be interchanged.

In addition to the above preferred embodiments, the present invention has other embodiments, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope defined by the appended claims.

Claims (10)

1. The utility model provides a machine for burning grass, includes casing, battery package, motor, flabellum and the core that generates heat, and the motor is located in the casing and is used for driving the flabellum, and the core that generates heat is located on the casing, its characterized in that, machine for burning grass still includes first switch, second switch and driving lever, and first switch is located in the casing and the electricity is connected in the motor, and the electricity is connected in the core that generates heat in the casing is located to the second switch, but the driving lever round trip movement locate on the casing, be equipped with the first portion that triggers that corresponds with first switch and the second portion that triggers that corresponds with the second switch on the driving lever, trigger the portion through first portion and second and act on simultaneously and switch first switch and second switch when the driving lever removes.

2. The grass burner as claimed in claim 1, wherein the first switch and the second switch are arranged side by side along the moving direction of the deflector rod, and the first triggering portion and the second triggering portion are arranged at intervals along the moving direction of the deflector rod.

3. The grass burning machine as claimed in claim 1, wherein the first switch is provided with a first button, and the first trigger part is a trigger inclined plane corresponding to the first button; and/or a second button is arranged on the second switch, and the second trigger part is a trigger boss corresponding to the second button.

4. The grass burning machine as claimed in claim 1, wherein the inner wall of the housing is provided with a support groove extending along the moving direction of the deflector rod, and the side part of the deflector rod along the moving direction is embedded in the support groove; and/or the shifting rod is provided with a shifting block, and the shell is provided with a through hole for the shifting block to extend out of the shell.

5. The grass burner of claim 1, wherein an in-place structure is provided between the deflector rod and the housing, the in-place structure including a protrusion provided on the deflector rod and a recess provided on an inner wall of the housing, the deflector rod moving into place when the protrusion is inserted into the corresponding recess.

6. A haystack machine as claimed in claim 5, wherein said rods are provided with elastic ribs, and wherein said protrusions are provided on said ribs; and/or a plurality of convex ribs extending along the moving direction of the deflector rod are arranged on the inner wall of the machine shell, and the pits are arranged on the convex ribs and are arranged at intervals along the moving direction of the deflector rod.

7. The grass burner as claimed in claim 1, further comprising a battery pack and a battery holder, wherein the battery holder is connected to the housing, the battery pack is detachably connected to the battery holder, the battery holder is provided with a conductive member, the first switch is provided on a circuit where the motor is electrically connected to the conductive member, and the second switch is provided on a circuit where the heat generating core is electrically connected to the conductive member.

8. The grass burner as claimed in claim 7, wherein the battery holder is connected to the rear end of the housing, the grass burner further comprises an extension rod, the extension rod is connected to the battery holder through a support, the front end of the support is provided with an insertion column and a tongue piece located outside the insertion column, the tongue piece has elasticity and is provided with a clamping block, the battery holder is provided with a jack for the insertion column to insert, and the outer wall of the battery holder is provided with a clamping groove for the clamping block to clamp.

9. The grass burner as claimed in claim 8, wherein the outer wall of the post is provided with a positioning groove, the inner wall of the insertion hole is provided with a positioning portion, and the positioning portion is embedded in the positioning groove when the post is inserted into the insertion hole.

10. A haystack machine as claimed in any one of claims 1 to 9, wherein the housing is formed with a support handle, and an open slot is provided between the support handle and the housing.

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