WO2022126462A1

WO2022126462A1 - Lawn mower

Info

Publication number: WO2022126462A1
Application number: PCT/CN2020/137052
Authority: WO
Inventors: 多尔夫·达维德; 孙佩锋
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2022-06-23

Abstract

Disclosed is a lawn mower, relating to an electric lawn mowing device. The lawn mower comprises: a body; a fixing seat installed on the body; an electric motor installed in the fixing seat; and a cutting module. The cutting module comprises: a connecting sleeve arranged on a shaft of the electric motor in a sleeved manner; and a cutting cutterhead mechanism installed on the connecting sleeve. The fixing seat and the body are detachably connected, or the cutting cutterhead mechanism and the connecting sleeve are detachably connected. According to the present application, the universality of the cutting cutterhead mechanism can be effectively improved, thereby reducing the purchase costs of a user.

Description

Lawn mower

technical field

The invention relates to an electric lawn mower, in particular to a lawn mower.

Background technique

A lawn mower is a lawn trimming tool that usually includes a wheel set, a body and a cutting blade mechanism, etc., and the lawn mower can drive on the lawn and cut the grass. At present, lawn mowers mainly use gasoline engines or electric systems as cutting power, and rely on human power or electric drive to move back and forth on the lawn to complete the care and mowing of the lawn.

The cutting blade mechanism used in the existing lawn mower is matched with the lawn mower, and it can only be installed on the lawn mower for use, and cannot be detached and installed on other types of devices for use. Therefore, the cutting blade mechanism cannot be universal, for example, it cannot be installed on the lawn mower for use. Therefore, the lawn mower used by the user also needs to have its own corresponding cutting blade mechanism, and the user needs to have a matching lawn mower. It is also necessary to have a cutting blade mechanism matched with the grass trimmer, which leads to an increase in purchase cost and a consumption of storage space.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a lawn mower, which can effectively improve the versatility of the cutting disc mechanism and reduce the user's purchase cost.

The specific technical scheme of the embodiment of the present invention is:

(same as claims)

The technical scheme of the present invention has the following significant beneficial effects:

The cutting cutter head mechanism of the lawn mower in the present application is detachably connected to the connecting sleeve directly sleeved on the motor, or the fixing base for installing the motor and the body are detachably connected. Therefore, the cutting cutter head mechanism can be removed from the cutting head. Detachable from the mower or the mount, motor and cutting module together can be detached from the mower. At the same time, the fixing base can be the same as the fixing base for installing the motor in the lawn mower, or the detachable connection between the cutting disc mechanism and the connecting sleeve can be connected to the connecting sleeve of the cutting module of the lawn mowing machine, pruning machine and other garden tools. The structure of the cutting deck mechanism is exactly the same. Therefore, the cutting deck mechanism of the lawn mower and the cutting deck mechanism of the lawn mower are universal, or the motor base of the lawn mower and the motor base of the lawn trimmer, etc. The versatility further makes the cutting blade mechanism of the lawn mower and the cutting blade mechanism of the lawn mower, etc. universal, and the parts of the lawn mower can be directly disassembled and installed on the lawn mower for direct use. Therefore, the user does not need to have the same The cutter head mechanism matched with the lawn mower and the cutting cutter head mechanism matched with the lawn mower do not even need to have a fixed seat, a motor, a cutting module and a cutter head matched with the lawn mower at the same time. The fixed seat, motor, and cutting module can effectively reduce the purchase cost of the user, and reduce the storage space occupied by various types of cutting deck mechanisms and other components in the later stage. The cutting deck of the lawn mower in this application The mechanism is able to meet the use of garden tools such as lawn mowers, lawn trimmers and pruning machines at the same time.

With reference to the following description and drawings, specific embodiments of the invention are disclosed in detail, indicating the manner in which the principles of the invention may be employed. It should be understood that embodiments of the present invention are not thereby limited in scope. Embodiments of the invention include numerous changes, modifications and equivalents within the spirit and scope of the appended claims. Features described and/or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, in combination with, or instead of features in other embodiments .

Description of drawings

The drawings described herein are for explanatory purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes and proportions of the components in the figures are only schematic and are used to help the understanding of the present invention, and do not specifically limit the shapes and proportions of the components of the present invention. Under the teachings of the present invention, those skilled in the art can select various possible shapes and proportions according to specific conditions to implement the present invention.

1 is a schematic diagram of a lawn mower in an embodiment of the present invention;

2 is an exploded schematic diagram of a motor and a cutting module in an embodiment of the present invention;

3 is a schematic exploded view of the motor and the cutting module from another angle in the embodiment of the present invention;

Fig. 4 is the bottom view of the lawn mower in the embodiment of the present invention;

FIG. 5 is a schematic diagram of a lawn mower using a cutting module.

Reference numerals for the above drawings:

1. Body; 2. Motor; 31. Connecting sleeve; 311. Hole; 312, Through hole; 313, First alignment part; 32. Cutting blade mechanism; 321, Blade; 3213, the cutting piece; 322, the fixing piece; 323, the gasket; 4, the wheel mechanism; 5, the fixing seat.

Detailed ways

The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only for the purpose of explaining the present invention, and should not be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible modifications based on the present invention, and these should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a mechanical connection or an electrical connection, or it may be the internal communication between two components, it may be directly connected, or it may be indirectly connected through an intermediate medium, For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the present application are for the purpose of describing particular embodiments only, and are not intended to limit the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In order to effectively improve the versatility of the cutting disc mechanism and reduce the purchase cost of users, a lawn mower is proposed in this application. FIG. 1 is a schematic diagram of the lawn mower in an embodiment of the present invention, and FIG. 2 is an embodiment of the present invention. Schematic diagram of the explosion of the middle motor and cutting module, FIG. 3 is a schematic diagram of the explosion of the motor and the cutting module in another angle of the embodiment of the present invention, and FIG. 4 is a bottom view of the lawn mower in the embodiment of the present invention, as shown in FIGS. 1 to 1 . 4, the lawnmower may include: a body 1; a fixing base 5 installed on the body 1; a motor installed in the fixing base 5; The connecting sleeve 31 ; the cutting blade mechanism 32 installed on the connecting sleeve 31 ;

The cutting blade mechanism 32 of the lawn mower in the present application is detachably connected to the connecting sleeve directly sleeved on the motor 2, or the fixed seat 5 for installing the motor 2 and the body 1 are detachably connected. Therefore, the cutting blade The disc mechanism 32 can be detached from the lawn mower or the mount 5, the motor 2 and the cutting module together can be detached from the lawn mower. At the same time, the fixing base 5 can be the same as the fixing base for installing the motor in the lawn mower, or the detachable connection between the cutting disc mechanism 32 and the connecting sleeve and the connecting sleeve of the cutting module of garden tools such as lawn mowing machines and pruning machines. 31 is connected to the cutting blade mechanism using the same structure, therefore, the cutting blade mechanism 32 of the lawn mower and the cutting blade mechanism of the lawn mower etc. have commonality, or the motor base of the lawn mower is the same as that of the lawn mower, etc. The motor base is universal, so that the cutting blade mechanism 32 of the lawn mower and the cutting blade mechanism of the lawn mower are universal, and the parts of the lawn mower can be directly disassembled and installed on the lawn mower for direct use. Therefore, The user does not need to have both the cutter head mechanism matched with the lawn mower and the cutter head mechanism matched with the lawn mower, or even the fixed seat, the motor, the cutting module and the cutter head matched with the lawn mower at the same time. The fixed seat 5, the motor 2, and the cutting module matched with the lawn mower can effectively reduce the purchase cost of the user and reduce the storage space occupied by various types of cutting blade mechanisms and other components in the later stage. The cutting blade mechanism of the lawn mower can meet the use of garden tools such as lawn mowers, lawn trimmers and pruning machines at the same time.

In order to better understand the lawn mower in this application, it will be further explained and described below. As shown in Fig. 1, the lawnmower has a body 1 on which a wheel mechanism 4 for moving the body 1 forward and backward may be mounted, and the wheel mechanism 4 may include front wheels and rear wheels.

As shown in FIG. 1 , the fixing base 5 of the lawn mower can be installed on the body 1 . The motor can be accommodated and fixed in the fixing seat 5 . The fixing base 5 and the body 1 can be connected in a detachable manner, so that the fixing base 5 , the motor 2 and the cutting module can be easily detached from the body 1 together. In a feasible implementation manner, the fixing base 5 and the body 2 can be connected together by snapping, so that the fixing base 5 can be directly disassembled from the body 2 without other tools.

The motor 2 of the lawn mower can be installed in the fixed base 5, and the motor 2 is used to drive the cutting module to rotate. The motor 2 and the fixing base 5 can be fixedly connected, for example, the motor 2 is screwed on the fixing base 5 through screws to connect the two into one body.

The shaft of the motor 2 is generally directed downward, so, as shown in Figure 4, the cutting module can be directly installed on the bottom of the body 1, and the cutting module is generally rotated in the horizontal direction, so that when the lawn mower is running, the cutting module can be Cut the grass below the fuselage 1.

In a feasible implementation manner, the fixing base 5 is located at the upper end of the body 1 , and the shaft of the motor 2 only needs to face downward to ensure that the cutting module is installed on the shaft of the motor 2 from the bottom of the body 1 . Of course, the motor 2 can also be located in the middle of the fuselage 1, for example, it is snap-connected in the notch of the main body of the fuselage 1, the shaft of the motor 2 is downward, and the cutting module is installed on the shaft of the motor 2 from the bottom of the fuselage 1. .

In the above several embodiments, the fixing base 5 can be detachably connected with the body 1, so that the fixing base 5, the motor 2 and the cutting module can be easily disassembled from the lawn mower together. FIG. 5 is a schematic diagram of a lawn mower using a cutting module. As shown in FIG. 5 , the fixing base 5 of the lawn mower in the present application has the same structure as the fixing base 5 used for fixing the motor in the lawn mower and the pruning machine. , therefore, the fixing base 5 in the present application can be directly installed on the lawn mower and the pruning machine. The fixed seat 5 of the lawnmower can be directly disassembled from the body 1 and directly installed on the body of the lawnmower and the pruning machine for direct use, so that the user does not need to have a matching device for the lawnmower and the pruning machine at the same time. The fixed seat 5, the motor, the cutting blade mechanism and the fixed seat 5, the motor 2, and the cutting blade mechanism 32 matched with the lawn mower, which can effectively reduce the cost of the user's purchase, as well as a variety of different fixed seats 5, motors in the later stage. , the storage space occupied by the cutting blade mechanism, the fixed seat 5 of the lawn mower, the motor and the cutting blade mechanism in this application can simultaneously satisfy the requirements of the lawn mower, lawn mower, and pruning machine with the fixed seat 5. Garden tool use.

In a feasible implementation manner, the motor 2 may also be directly mounted on the body 1 , and there may be no fixing seat 5 between the motor 2 and the body 1 .

As shown in FIG. 1 to FIG. 3 , the cutting module can be installed at the bottom of the body 1 . The cutting module can include: a connecting sleeve 31 , which is sleeved on the shaft of the motor 2 ; The connecting sleeve 31 may have an opening 311 into which the shaft of the motor 2 can be inserted. Through the opening 311, the connecting sleeve 31 and the shaft of the motor 2 can be interference fit to ensure that the motor 2 can drive the connecting sleeve 31 to rotate. Of course, the cross-section of the opening 311 of the connecting sleeve 31 can be non-circular, and the shaft of the motor 2 can have a shape matching the cross-section of the opening 311 of the connecting sleeve 31 . The above method can also ensure that the motor 2 can drive the connecting sleeve 31 to rotate.

The cutting blade mechanism 32 in this application can be directly installed on the lawn mower. The connecting sleeve 31 of the lawn mower in this application has the same structure as the connecting sleeve 31 in the lawn mower, and the connection method with the cutting blade mechanism 32 is the same. It is the same as the connecting sleeve in the lawn mower and the cutting blade mechanism of the lawn mower. Therefore, the cutting blade mechanism 32 and the connecting sleeve 31 of the lawn mower in the present application are detachably connected, and the cutting blade mechanism 32 is detachable. It can be directly removed from the connecting sleeve 31, and the connecting sleeve directly installed on the lawn mower can be used directly, so that the user does not need to have the connecting sleeve matching with the lawn mower and the connecting sleeve matching with the lawn mower at the same time. Effectively reducing the purchase cost of the user and the storage space occupied by various types of cutting modules in the later stage, the cutting module of the lawn mower in the present application can be used as a lawn mower and a lawn mower at the same time.

In order to make the cutting blade disc mechanism 32 detachably connected to the connecting sleeve 31, in a feasible implementation manner, as shown in FIG. 2 and FIG. 3, at least two through holes 312 may be opened on the connecting sleeve 31; The disc mechanism 32 includes: a cutter disc 321 arranged on the side of the connecting sleeve 31 with the opening 311, the cutter disc 321 is provided with at least two through holes 3211; The fixing member 322 rotates synchronously with the connecting sleeve 31 . The cutter head 321 is set on the connecting sleeve 31 through the fixing member 322, and at the same time, the connecting sleeve 31 can drive the cutter head 321 to rotate. The cutter head 321 has a cutting member 3213 on the edge. When the cutter head 321 rotates, the cutting member 3213 Cut grass.

In order to facilitate the detachment of the cutter head 321 on the connecting sleeve 31, in a feasible implementation manner, as shown in FIG. 2 and FIG. 3, the through hole 312 may be a threaded hole, the fixing member 322 may be a screw, and the screw passes through The through hole 3211 is screwed into the threaded hole. When the cutter head 321 needs to be disassembled, the cutter head 321 can be disassembled from the connection sleeve 31 only by unscrewing the screw. When the cutter head 321 needs to be installed, it is necessary to align the through hole 3211 of the cutter head 321 with the through hole 312 of the connecting sleeve 31, and then tighten the screw to securely connect the cutter head 321 and the connecting sleeve 31. .

In order to make the connecting sleeve 31 evenly transmit the torque to the cutter head 321 through the plurality of fixing parts 322 and avoid damage to a certain fixing part 322 due to excessive force, the through hole 312 on the connecting sleeve 31 is arranged around the axis of the connecting sleeve 31 . The through holes 3211 on the cutter head 321 are distributed in a circle around the axis of the cutter head 321 .

In a feasible embodiment, as shown in FIG. 2 and FIG. 3 , the side of the connecting sleeve 31 facing the cutting blade mechanism 32 has a first alignment portion 313 , and the cutting blade mechanism 32 includes: a blade tray 321 , a blade The side of the disk 321 facing the connection sleeve 31 has a second alignment portion 3212 matching the first alignment portion 313 . When installing the cutter head 321 on the connection sleeve 31, first align the second alignment portion 3212 of the cutter head 321 with the first alignment portion 313 of the connection sleeve 31, at this time, the cutter head 321 and the connection disc are already Accurate alignment is achieved, the axes of the two are in a straight line and/or the through holes 3211 of the cutter head 321 and the through holes 312 of the connecting sleeve 31 are aligned one-to-one, so that the cutter head 321 and the cutter head 321 can be aligned with the through holes 312 of the connecting sleeve 31 later by the fixing member 322. The connecting sleeves 31 are tightly connected together. As shown in FIG. 2 and FIG. 3 , in a specific implementation manner, one of the first alignment portion 313 and the second alignment portion 3212 is a convex portion, and the first alignment portion 313 and the second pair of The other of the alignment portions 3212 is a recessed portion or an opening.

Since the cutter head 321 is made of metal material, in order to improve the locking degree between the cutter head 321 and the connection by the fixing member 322, and at the same time prevent the fixing member 322 from damaging the cutter head 321, as shown in FIG. 1 to FIG. 3, the cutting cutter head is The mechanism 32 may include: a spacer 323 , the spacer 323 is disposed on the side of the cutter head 321 facing away from the connecting sleeve 31 , and the fixing member 322 passes through the spacer 323 and then passes through the through hole 3211 . The tail portion of the fixing member 322 abuts against the washer 323 , and the pressure is transmitted to the cutter head 321 through the spacer 323 , thus preventing the tail portion of the fixing member 322 from directly contacting the surface of the cutter head 321 .

In order to fix the cutting blade mechanism 32 on the connecting sleeve 31, in a feasible embodiment, the cutting blade mechanism 32 can be fixedly installed on the connecting sleeve 31 by means of a snap. The connecting sleeve 31 may have a first engaging portion on the other side of the opening 311 , the cutting blade mechanism 32 may have a second engaging portion that is engaged with the first engaging portion, and the first engaging portion of the cutting blade mechanism 32 When the two engaging parts are engaged with the first engaging part of the connecting sleeve 31 , the cutting blade mechanism 32 and the connecting sleeve 31 are fixedly connected together.

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of" describing a combination shall include the identified element, ingredient, component or step as well as other elements, components, components or steps that do not materially affect the essential novel characteristics of the combination. Use of the terms "comprising" or "comprising" to describe combinations of elements, ingredients, components or steps herein also contemplates embodiments consisting essentially of those elements, ingredients, components or steps. By use of the term "may" herein, it is intended to indicate that "may" include any described attributes that are optional. A plurality of elements, components, components or steps can be provided by a single integrated element, component, component or step. Alternatively, a single integrated element, component, component or step may be divided into separate multiple elements, components, components or steps. The disclosure of "a" or "an" used to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments may be referred to each other. The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose thereof is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly, and cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included within the protection scope of the present invention.

Claims

A lawn mower, characterized in that the lawn mower comprises:

a fuselage; a mount mounted on said fuselage;

a motor installed in the fixed seat;

A cutting module, the cutting module includes: a connecting sleeve sleeved on the shaft of the motor; a cutting cutter disc mechanism installed on the connecting sleeve;

The fixing base and the body are detachably connected or the cutting blade mechanism and the connecting sleeve are detachably connected, and the connecting sleeve is provided with an opening for the shaft of the motor to be inserted, The connecting sleeve is interference-fitted with the shaft of the motor through the opening, and at least two through holes are formed on the connecting sleeve;

The cutting cutter disc mechanism further includes: a cutter disc disposed on the side of the connecting sleeve with the opening, and at least two through holes are formed on the cutter disc; a fixed piece that rotates synchronously between the cutter head and the connection sleeve, so that the cutting cutter head mechanism and the connection sleeve are detachably connected;

Wherein, the side of the connecting sleeve facing the cutting cutter disc mechanism has a first alignment portion, and the cutting cutter disc mechanism includes: a cutter disc, the side of the cutter disc facing the connecting sleeve has a The first alignment portion matches the second alignment portion.
The lawn mower according to claim 1, wherein the through hole is a threaded hole, the fixing member is a screw, and the screw is screwed into the threaded hole through the through hole.
The lawn mower according to claim 1, wherein the through holes are circumferentially distributed around the axis of the connecting sleeve, and the through holes are circumferentially distributed around the axis of the cutter head.
The lawn mower of claim 3, wherein one of the first alignment portion and the second alignment portion is a raised portion, and the first alignment portion and the first alignment portion are The other of the two alignment portions is a recess or opening.
The lawn mower according to claim 1, wherein the cutting cutter head mechanism further comprises: a spacer, the spacer is arranged on the side of the cutter head facing away from the connecting sleeve, and the fixing The piece passes through the gasket and then passes through the through hole.
The lawnmower of claim 1, wherein the shaft of the motor faces generally downward.
The lawn mower of claim 1, wherein the cutting module is mounted on the bottom of the body.
The lawn mower according to claim 1, wherein the cutting blade mechanism is fixedly mounted on the connecting sleeve by means of a snap.
The lawnmower according to claim 1, wherein the fixing base, the motor and the cutting module can be installed together on a lawnmower or a pruning machine with a cutting disc; or the cutting blade The disc mechanism can be mounted on a lawn mower or a pruner with a cutting disc.