CN216775504U - Connecting structure for quick replacement of cutter box of grass mower and grass mower - Google Patents

Abstract

The utility model discloses a connecting structure for quickly replacing a cutter box of a grass mower, which comprises a machine shell and the cutter box, wherein a containing groove used for containing the cutter box is arranged at the lower end of the machine shell, a buckle is arranged on the cutter box, a limiting bulge is arranged on the inner wall of the containing groove, the limiting bulge is matched with the inner wall of the containing groove to form a clamping groove used for being clamped with the buckle, a button is also arranged on the cutter box in a sliding mode, the button is fixedly connected with the buckle, the button is pressed to drive the buckle to move so as to avoid the limiting bulge, an elastic element is also arranged between the button and the cutter box, and the elastic element is used for pushing the button to drive the buckle to reset so as to enable the buckle to be clamped into the clamping groove. Also discloses a lawnmower provided with the connecting structure. When the knife box needs to be replaced, the knife box is more convenient to disassemble and assemble, and meanwhile, the knife box is more stable to connect with the shell and is not easily influenced by vibration.

Description

Connecting structure for quick replacement of cutter box of grass mower and grass mower

Technical Field

The utility model belongs to the field of electric garden tools, and particularly relates to a connecting structure for quickly replacing a cutter box of a lawnmower and the lawnmower.

Background

The grass mower is a common electric garden tool, a motor is controlled to rotate through a handle main switch, a motor gear drives a middle gear and a large gear to rotate to drive a blade to reciprocate to cut, cutting motion of scissors is simulated, and the purpose of cutting grass or branches is achieved through the cutting motion of the blade. For satisfying more use scene demands, current lawnmower generally is equipped with different blades according to cutting grass and pruning, also can change corresponding blade according to the use scene demand when using promptly, for convenient the change, the design has the sword box (grass-cutting sword box and prune the sword box) of directly assembling corresponding blade at present, only need like this to carry out the dismouting with corresponding sword box and lawnmower casing and can accomplish the change, reduces the operation degree of difficulty. However, in the prior art, the knife box and the casing are connected through screws in a threaded connection mode, so that 4 screws need to be unscrewed, unscrewed and screwed in the dismounting process, the process is complicated, screw parts are easily lost in the dismounting process, and the working efficiency is affected. In addition, the lawnmower has great vibration in actual use, and the threaded connection mode is likely to cause the possibility that the cutter box accidentally falls off in the use process due to the vibration loosening, so that certain potential safety hazards are caused. Still, for operating personnel to grip for being convenient for, the whole weight of lawnmower can not be too big, and casing and sword box generally can adopt plastics material, and after changing the dismouting many times like this, the screw thread of screw hole department is damaged because of wearing and tearing easily, influences life.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a connecting structure for quickly replacing a cutter box of a grass mower and the grass mower, which can effectively solve the problems that the assembly operation of a shell and the cutter box of the grass mower is complex and parts are easy to lose in the prior art, and meanwhile, the stability of the connection of the shell and the cutter box is ensured.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a connection structure of lawnmower quick replacement sword box, includes casing and sword box, the casing lower extreme is equipped with the holding tank that is used for holding partial sword box, be equipped with the buckle on the sword box, be equipped with spacing arch on the inner wall of holding tank, spacing arch cooperatees with the holding tank inner wall and forms the draw-in groove that is used for with the buckle joint, it is equipped with the button still to slide on the sword box, button and buckle fixed connection press the button and drive the buckle and remove and be used for dodging spacing arch, still be equipped with the elastic component between button and the sword box, the elastic component is used for promoting the button and drives the buckle and resets so that the buckle joint goes into the draw-in groove.

Preferably, the knife box comprises a knife box base and a box cover, a first guide channel for sliding the button is formed between the knife box base and the box cover, and a limiting part for limiting the sliding distance of the button is further arranged in the box cover. Can make the button slide along first direction passageway through setting up first direction passageway, prevent that the button from taking place the swing at the slip in-process, and set up spacing portion and can prevent that button sliding distance overlength alleviates the required strength of operating personnel operation.

Preferably, the button stretches into one side fixedly connected with diaphragm of sword box, the equal fixedly connected with in both ends of diaphragm the buckle, the through-hole that supplies the buckle to stretch out is seted up to the lid, and the buckle is in the through-hole along horizontal direction sliding connection.

Preferably, one side of the transverse plate, which is far away from the button, is provided with a connecting piece perpendicular to the transverse plate, the knife box base is provided with a baffle, and the elastic piece is arranged between the connecting piece and the baffle.

Preferably, the elastic piece is a spring plate, two ends of the spring plate are in sliding abutting connection with the baffle plate, and the middle part of the spring plate is fixedly connected with the connecting piece; or the elastic part is a pressure spring, the pressure spring is sleeved on the connecting piece, one end of the pressure spring is abutted against the transverse plate, and the other end of the pressure spring is abutted against the baffle plate. The elastic sheet or the pressure spring can be used as an elastic piece to realize the reset effect on the button.

Preferably, the baffle is provided with a second guide channel for sliding connection of the connecting piece, and a limiting plate for limiting the sliding distance of the connecting piece is arranged in the second guide channel. The second direction passageway is to the slip direction restriction of connecting piece, the restriction of limiting plate to the slip distance restriction of connecting piece to the slip direction and the distance of button and buckle are restricted, required strength when further lightening the operating personnel operation.

Preferably, be equipped with first direction inclined plane on the buckle, be equipped with second direction inclined plane on the spacing arch, first direction inclined plane and second direction inclined plane are used for mutual extrusion fit in order to drive the buckle and remove dodging spacing arch and make the knife box get into the holding tank. Through setting up first direction inclined plane and second direction inclined plane, when installing the sword box to the holding tank in, can need not press the button, directly aim at the sword box the holding tank and press the entering, because first direction inclined plane and the mutual extrusion of second direction inclined plane, the buckle can be promoted to shift and extrude the elastic component, spacing arch is dodged to the buckle like this the sword box can get into the holding tank smoothly, thereby the sword box gets into the holding tank completely after, thereby the elastic component promotes the buckle and resets and make buckle and draw-in groove chucking, thereby further reduce the degree of difficulty of installation operation like this.

In order to solve the technical problems, the utility model also adopts the following technical scheme: the grass mower comprises a driving mechanism, an eccentric wheel and a blade, and further comprises a connecting structure for rapidly replacing the blade box of the grass mower according to any one of the technical schemes, wherein the driving mechanism is installed in a machine shell, the eccentric wheel and the blade are connected with the blade box, the upper end of the eccentric wheel extends out of a box cover, and the output end of the driving mechanism extends out of the machine shell and is connected with the eccentric wheel. Because this lawnmower includes above-mentioned connection structure, its dismouting operation is more simple and convenient when needs change the sword box, and the sword box is connected more stably with the casing simultaneously, is difficult for receiving vibrations and influences.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the buckle is designed on the knife box, the clamping groove matched with the buckle is arranged at the lower end of the machine shell, and the installation of the knife box and the machine shell is realized through the clamping of the buckle and the clamping groove;

2. through set up the button of being connected with the buckle on the knife pouch, drive the buckle through pressing the button and remove and dodge spacing arch so that the knife pouch business turn over holding tank, still be equipped with the elastic component between button and knife pouch, promote the button through the elastic component and drive the buckle and reset so that the buckle joint goes into the draw-in groove. The knife box is aligned to the containing groove during installation, the button is pressed, then the knife box is placed into the containing groove, then the button is loosened, the buckle is clamped with the clamping groove under the action of the elastic piece, the button is pressed during disassembly, and the knife box separated from the containing groove can be taken down, so that the assembly and disassembly process is very simple and convenient, and the problem of part loss can not occur due to the fact that no additional parts exist;

3. according to the utility model, through the design of the accommodating groove, the mode that the bottom of the machine shell is connected with the upper surface of the cutter box in the prior art is changed, through the design of the accommodating groove, the side surface of the whole circle of the cutter box is in contact with the inner wall of the accommodating groove, and even if a large vibration occurs in the use process of the grass mower, the stability of connection between the cutter box and the machine shell can be ensured.

Drawings

FIG. 1 is a schematic view of a quick change magazine attachment structure for a lawnmower according to an embodiment of the present invention;

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

FIG. 3 is an enlarged schematic view of portion B of FIG. 1;

FIG. 4 is a schematic structural diagram of a knife box according to a first embodiment;

FIG. 5 is a schematic structural view of the first embodiment of the knife box with the cover removed;

FIG. 6 is an enlarged schematic view of portion C of FIG. 5;

fig. 7 is an exploded view of a lawnmower according to the second embodiment.

The cutting tool comprises a machine shell 1, a containing groove 2, a limiting protrusion 20, a second guiding inclined plane 200, a clamping groove 21, a cutter box 3, a cutter box base 30, a cutter box base 31, a box cover 32, a first guiding channel 33, a limiting part 34, a baffle plate 35, a second guiding channel 36, a limiting plate 4, a buckle 40, a first guiding inclined plane 5, a button 50, a transverse plate 51, a connecting piece 6, an elastic piece 6, an eccentric wheel 7, a pruning blade 8 and a grass cutting blade 9.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected or detachably connected or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; may be directly connected or indirectly connected through an intermediate unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The first embodiment is as follows: as shown in fig. 1 to 4, the connection structure for quickly replacing the blade box of the grass mower provided by the embodiment comprises a casing 1 and the blade box 3, wherein the lower end of the casing 1 is provided with a containing groove 2 for containing the blade box 3, the blade box 3 is provided with a buckle 4, the inner wall of the containing groove 2 is provided with a limiting bulge 20, and the limiting bulge 20 is matched with the inner wall of the containing groove 2 to form a clamping groove 21 for being clamped with the buckle 4. The buckle 4 is designed on the knife box 3, the clamping groove 21 matched with the buckle 4 is arranged at the lower end of the machine shell 1, and the installation of the knife box 3 and the machine shell 1 is realized through the clamping connection of the buckle 4 and the clamping groove 21; in addition, through the design of the accommodating groove 2, the side surfaces of the whole circle of the blade box 3 are in contact with the inner wall of the accommodating groove 2, and the stability of connection of the blade box 3 and the machine shell 1 can be ensured even if large vibration occurs in the use process of the grass mower. Still slide on the knife box 3 in this embodiment and be equipped with button 5, button 5 and 4 fixed connection of buckle press button 5 to drive buckle 4 and remove and dodge spacing arch 20, just so can make knife box 3 business turn over holding tank 2, combine that fig. 5 shows, still be equipped with elastic component 6 between button 5 and the knife box 3, elastic component 6 is used for promoting button 5 to drive buckle 4 and resets so that 4 joints of buckle insert draw-in groove 21. Aim at holding tank 2 with knife box 3 during installation like this, press button 5 then with knife box 3 put into holding tank 2 in, loosen button 5 again, buckle 4 and draw-in groove 21 chucking under the effect of elastic component 6, press button 5 during the dismantlement, take down from holding tank 2 deviate from knife box 3 can, the process of installation dismantlement like this is very simple and convenient, owing to not having extra spare part, can not take place the problem that spare part lost moreover.

As shown in fig. 4, the knife box 3 in this embodiment includes a knife box base 30 and a box cover 31, so that the blades can be easily assembled into the knife box 3, a first guide channel 32 for the sliding of the button 5 is formed between the knife box base 30 and the box cover 31, and a limiting portion 33 for limiting the sliding distance of the button 5 is further provided in the box cover 31. The button 5 can slide along the first guide channel 32 by arranging the first guide channel 32, the button 5 is prevented from swinging in the sliding process, and the limiting part 33 is arranged to prevent the sliding distance of the button 5 from being overlong, so that the force required by the operation of an operator is reduced. It will be appreciated that the button 5 is flush with the outer surface of the magazine 3 when no external force is applied.

As shown in fig. 5, the button 5 and the buckle 4 are connected to the knife box 3 in the following manner: one side fixedly connected with diaphragm 50 that stretches into sword box 3 at button 5, the equal fixedly connected with buckle 4 in both ends of diaphragm 50, the through-hole that supplies buckle 4 to stretch out is seted up to lid 31 to buckle 4 is along horizontal direction sliding connection in the through-hole. Further, one side that diaphragm 50 deviates from button 5 is equipped with the connecting piece 51 of perpendicular to diaphragm 50, is equipped with baffle 34 on the knife box base 30, and elastic component 6 is located between connecting piece 51 and the baffle 34, and is concrete, and elastic component 6 in this embodiment is the shell fragment, and the both ends of shell fragment all slide the butt on baffle 34, the middle part and the connecting piece 51 fixed connection of shell fragment. It should be understood that the elastic member 6 may also be a compression spring, and the compression spring is sleeved on the connecting member 51, one end of the compression spring abuts against the transverse plate 50, and the other end of the compression spring abuts against the baffle 34.

As shown in fig. 6, in the present embodiment, a second guide channel 35 for slidably connecting the connecting member 51 is further provided on the baffle 34, and a limiting plate 36 for limiting the sliding distance of the connecting member 51 is provided in the second guide channel 35. The second guide passage 35 restricts the sliding direction of the link 51 and the stopper plate 36 restricts the sliding distance of the link 51, thereby restricting the sliding direction and distance of the push button 5 and the clip 4 and further reducing the force required for the operator to operate.

The assembling and disassembling steps of the case 1 and the knife box 3 in this embodiment are explained as follows: when installing sword box 3 to casing 1 on, at first aim at holding tank 2 with sword box 3, press the button 5 of 3 both sides of sword box and make buckle 4 aversion, push away sword box 3 again in holding tank 2, promote sword box 3 and target in place the back, loosen button 5, buckle 4 and draw-in groove 21 chucking under the effect that resets of elastic component 6, accomplish the assembly of sword box 3 and casing 1. When the knife box 3 is detached from the casing 1, the buttons 5 on both sides of the knife box 3 are pressed to release the buckles 4 from the slots 21, the buttons 5 are kept pressed, the knife box 3 is pulled outwards to release the knife box 3 from the accommodating groove 2, and then the buttons 5 are released to finish the detachment of the knife box 3 from the casing 1.

As shown in fig. 3, in order to further simplify the operation steps, in this embodiment, a first guiding inclined surface 40 is further disposed on the buckle 4, a second guiding inclined surface 200 is disposed on the limiting protrusion 20, and the first guiding inclined surface 40 and the second guiding inclined surface 200 are used for mutual press-fitting to drive the buckle 4 to move and avoid the limiting protrusion 20, so that the knife box 3 enters the accommodating groove 2. Through setting up first direction inclined plane 40 and second direction inclined plane 200, when installing sword box 3 to holding tank 2 in, can need not press button 5, directly aim at sword box 3 holding tank 2 and press the entering, because first direction inclined plane 40 and the mutual extrusion of second direction inclined plane 200, buckle 4 can be promoted to shift and extrude elastic component 6, buckle 4 dodges spacing arch 20 like this sword box 3 can get into holding tank 2 smoothly, sword box 3 gets into holding tank 2 back completely, thereby elastic component 6 promotes buckle 4 and resets and make buckle 4 and draw-in groove 21 chucking, thereby further reduce the degree of difficulty of installation operation like this.

Example two: as shown in fig. 7, the present embodiment provides a lawnmower, which includes a driving mechanism, an eccentric wheel 7, a blade, and a connecting structure for quickly replacing a blade box of the lawnmower as provided in the first embodiment above, the driving mechanism is installed in the casing 1, the eccentric wheel 7 and the blade are both connected to the blade box 3, the pruning blade 8 is assembled with the blade box 3 to obtain a pruning blade box, the grass cutting blade 9 is assembled with the blade box 3 to obtain a grass cutting blade box, the upper end of the eccentric wheel 7 extends out of the box cover 31, and the output end of the driving mechanism extends out of the casing 1 and is connected to the eccentric wheel 7, so that the driving mechanism can drive the blade to make reciprocating cutting motion through the eccentric wheel 7. Because this lawnmower includes above-mentioned connection structure, it is more simple and convenient when needs change sword box 3, and the connection of sword box 3 and casing 1 is more stable simultaneously, is difficult for receiving vibrations to influence.

The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.

Claims (8)

1. The utility model provides a connection structure of lawnmower quick replacement sword box, includes casing (1) and sword box (3), its characterized in that: casing (1) lower extreme is equipped with holding tank (2) that are used for holding part sword box (3), be equipped with buckle (4) on sword box (3), be equipped with spacing arch (20) on the inner wall of holding tank (2), spacing arch (20) cooperate with holding tank (2) inner wall to form draw-in groove (21) that are used for with buckle (4) joint, still slide on sword box (3) and be equipped with button (5), button (5) and buckle (4) fixed connection press button (5) to drive buckle (4) and remove and be used for dodging spacing arch (20), still be equipped with elastic component (6) between button (5) and sword box (3), elastic component (6) are used for promoting button (5) to drive buckle (4) and reset so that buckle (4) joint income draw-in groove (21).

2. The connecting structure for quick change blade boxes of lawnmowers according to claim 1, wherein: the utility model discloses a portable knife box, including sword box (3) including sword box base (30) and lid (31), form between sword box base (30) and lid (31) and supply gliding first direction passageway (32) of button (5), still be equipped with spacing portion (33) that are used for restricting button (5) sliding distance in lid (31).

3. The connecting structure for quick change blade boxes of lawnmowers according to claim 2, wherein: button (5) stretch into one side fixedly connected with diaphragm (50) of sword box (3), the equal fixedly connected with in both ends of diaphragm (50) buckle (4), the through-hole that supplies buckle (4) to stretch out is seted up in lid (31), and buckle (4) are along horizontal direction sliding connection in the through-hole.

4. The connecting structure for quick change blade boxes of lawnmowers according to claim 3, wherein: one side that diaphragm (50) deviates from button (5) is equipped with connecting piece (51) of perpendicular to diaphragm (50), be equipped with baffle (34) on knife box base (30), elastic component (6) are located between connecting piece (51) and baffle (34).

5. The connecting structure for quick change blade boxes of lawnmowers according to claim 4, wherein: the elastic piece (6) is a spring plate, two ends of the spring plate are in sliding butt joint with the baffle (34), and the middle part of the spring plate is fixedly connected with the connecting piece (51); or the elastic part (6) is a pressure spring, the pressure spring is sleeved on the connecting piece, one end of the pressure spring is abutted against the transverse plate, and the other end of the pressure spring is abutted against the baffle plate.

6. The connecting structure for quick change blade boxes of lawnmowers according to claim 4, wherein: and a second guide channel (35) for the sliding connection of the connecting piece (51) is arranged on the baffle (34), and a limiting plate (36) for limiting the sliding distance of the connecting piece (51) is arranged in the second guide channel (35).

7. The connecting structure for quick change blade cartridge of lawnmower according to claim 1, wherein: be equipped with first direction inclined plane (40) on buckle (4), be equipped with second direction inclined plane (200) on spacing arch (20), first direction inclined plane (40) and second direction inclined plane (200) are used for extrusion fit each other in order to drive buckle (4) to remove dodges spacing arch (20) and make sword box (3) get into holding tank (2).

8. Lawnmower, including actuating mechanism, eccentric wheel (7) and blade, its characterized in that: the quick change blade box connecting structure of the lawnmower further comprises a connecting structure for quickly changing the blade box according to any one of claims 1 to 7, the driving mechanism is installed in the machine case (1), the eccentric wheel (7) and the blades are both connected with the blade box (3), the upper end of the eccentric wheel (7) extends out of the box cover (31), and the output end of the driving mechanism extends out of the machine case (1) and is connected with the eccentric wheel (7).

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