Lawn mower

Abstract

The utility model discloses a mower. The mowing machine comprises a machine body, a mowing blade and a mowing blade, the fan is arranged at the bottom of the machine body; the blade assembly is arranged at the bottom of the body; the motor is mounted on the machine body; the motor drives the fan and the blade assembly to rotate, and the blade assembly penetrates through the fan through a locking piece and is fixedly connected with a rotating shaft of the motor. A blade assembly; the connecting piece is arranged on the blade, and the fastening piece is used for locking the connecting piece on the blade; the connecting piece is provided with a mounting part penetrating through the blade and an end part connected with the mounting part; a containing space is formed in the side, facing the blade assembly, of the fan and used for containing the end of the connecting piece. The height of the mounting part outside the blade assembly is greater than the height from the bottom surface of the accommodating space to the blade, and the height of the end part is less than or equal to the height from the bottom surface of the accommodating space to the blade. Compared with the prior art, the blade assembly is prevented from being reversely installed on the machine body to affect the cutting performance.

Description

Technical Field

[0001] The utility model relates to the field of garden tools, in particular to a lawn mower. Background Art

[0002] Lawn mowers are common gardening tools. With the continuous development of science and technology, highly intelligent automatic lawn mowers are becoming more and more common. As a gardening tool, lawn mowers can be used by users to remove weeds, mow lawns, etc.

[0003] The existing blade assembly of the lawn mower has a plurality of cross-stacked blades, but when the cutter assembly is mounted on the machine body, the blade assembly is easily mounted upside down, thereby affecting the cutting effect of the blades. Utility Model Content

[0004] The utility model aims to provide a lawn mower, which can prevent a blade assembly from being reversely installed on a machine body to affect cutting performance.

[0005] In order to solve the above technical problems, the embodiment of the utility model provides a lawn mower, comprising:

[0006] body;

[0007] A fan, wherein the fan is arranged at the bottom of the fuselage;

[0008] a blade assembly, the blade assembly being arranged at the bottom of the body and located on a side of the fan facing away from the body; and

[0009] A motor, the motor being mounted on the fuselage; the motor driving the fan and the blade assembly to rotate, and the blade assembly penetrating the fan through a locking member and fixedly connected to the rotating shaft of the motor;

[0010] The blade assembly comprises: a blade, a connecting piece arranged on the blade, and a fastener for locking the connecting piece on the blade; the connecting piece has a mounting portion penetrating the blade and an end portion connected to the mounting portion;

[0011] The fan has a accommodating space on one side facing the blade assembly, and the accommodating space is used to accommodate the end of the connecting piece; the height of the mounting portion outside the blade assembly is greater than the height from the bottom of the accommodating space to the blade, and the height of the end is less than or equal to the height from the bottom of the accommodating space to the blade.

[0012] Compared with the prior art, the implementation mode of the utility model provides a connecting piece, which is connected to the blade assembly. The connecting piece has an end and a mounting portion. When the blade assembly is installed on the body, the end is placed toward the accommodating space according to the positions of the end and the mounting portion, so that the blade assembly can be installed on the body. If the blade assembly is installed in reverse, the blade assembly cannot be installed on the body normally because the height of the mounting portion outside the blade assembly is greater than the height from the bottom of the accommodating space to the blade. Therefore, the blade assembly is placed in reverse on the body, thereby ensuring the cutting performance of the lawn mower.

[0013] In one embodiment, the blades are multiple and overlapped and fixed; the blade facing the fan is an upper blade, and the blade facing away from the fan is a lower blade;

[0014] The upper blade is provided with a first positioning hole, and the lower blade is provided with a second positioning hole;

[0015] The mounting portion is provided with a first matching portion and a second matching portion arranged along the height of the mounting portion; the shape of the first matching portion matches and corresponds to the hole type of the first positioning hole, and the shape of the second matching portion matches and corresponds to the hole type of the second positioning hole; the first matching portion is installed in the first positioning hole, and the second matching portion is installed in the second positioning hole.

[0016] In one embodiment, the first matching portion is polygonal, and the second matching portion is circular; the first matching portion radially protrudes outside the second matching portion, and the end portion radially protrudes outside the first matching portion.

[0017] In one embodiment, the accommodating space is in a circular ring shape with the rotation axis of the blade assembly as the center.

[0018] In one embodiment, the end portion is separated from a wall surface of the accommodating space.

[0019] In one embodiment, the connecting member is a bolt, and the fastening member is a nut.

[0020] In one embodiment, a disc-shaped gasket is installed between the locking member and the blade assembly.

[0021] In one embodiment, the fan has a mounting base on a side facing away from the body, and the mounting base has a boss penetrated by the blade; the locking member penetrates the blade and the boss and is fixed to the rotating shaft of the motor.

[0022] In one embodiment, the blades are multiple and overlapped and fixed; the blade facing the fan is an upper blade, and the blade facing away from the fan is a lower blade;

[0023] The upper blade is in contact with the installation bottom of the fan;

[0024] The height of the mounting portion outside the blade assembly is greater than the height of the accommodating space, and the height of the end portion is less than or equal to the height of the accommodating space.

[0025] In one embodiment, the accommodating space is arranged around the outer periphery of the mounting base;

[0026] There are a plurality of connecting members, and at least one connecting member is disposed on both radial sides of the locking member. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a lawn mower according to an embodiment of the utility model;

[0028] Figure 2 It is a schematic diagram of the bottom structure of a lawn mower according to an embodiment of the utility model;

[0029] Figure 3 is a cross-sectional view of a lawn mower according to an embodiment of the utility model;

[0030] Figure 4 yes Figure 3 A partial enlarged view of middle A;

[0031] Figure 5 This is a schematic diagram of the structure of an upper blade according to an embodiment of the utility model;

[0032] Figure 6 This is a schematic diagram of the structure of the lower blade according to an embodiment of the utility model;

[0033] Figure 7 It is a structural schematic diagram of a connecting member according to an embodiment of the utility model;

[0034] Figure 8 It is a structural schematic diagram of a fan according to an embodiment of the utility model. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0036] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, ie, should be interpreted as "including, but not limited to."

[0037] The following will be combined with the accompanying drawings to describe the various embodiments of the present invention in detail, so as to more clearly understand the purpose, characteristics and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0038] References throughout the specification to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0039] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0040] In the following description, in order to clearly demonstrate the structure and working mode of the utility model, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0041] Embodiments of the present invention are described below with reference to the accompanying drawings.

[0042] This example relates to a lawn mower 100. Figure 1 and Figure 2As shown, the lawn mower 100 includes: a body 1, a fan 2, a blade assembly 3 and a motor 4. The motor 4 is mounted on the body 1, and the fan 2 and the blade assembly 3 are arranged on a chassis at the bottom of the body 1, and the blade assembly 3 is located on the side of the fan 2 away from the body 1. The blade assembly 3 is fixedly connected to the rotating shaft of the fan 2 and the motor 4 through a locking member 6, and the locking member 6 can be a bolt or other conventional mechanical fixing member. A controller is arranged on the body 1, and the controller controls the motor 4 to rotate the fan 2 and the blade assembly 3. The lawn mower 100 also includes an operating rod 5 and a self-propelled mechanism, and the self-propelled mechanism includes a running wheel and a driving motor for driving the running wheel to move. A speed regulating knob is arranged on the operating rod 5, and a signal is sent to the controller through the speed regulating knob. The controller includes a PCB control board, so that the controller controls the driving motor to make the running wheel move. When the lawn mower 100 is working, the operator can hold the handle on the operating rod 5 and push the lawn mower 100 to move.

[0043] Specifically, Figure 3 and Figure 4 As shown, the blade assembly 3 includes: a blade, a connecting member 33 disposed on the blade, and a fastener 34 for locking the connecting member 33 on the blade. The connecting member 33 has a mounting portion 332 that penetrates the blade and an end portion 331 connected to the mounting portion 332. The fan 2 is provided with a receiving space 20 on one side facing the blade assembly 3, and the receiving space 20 is used to accommodate the end portion 331 of the connecting member 33. The height of the mounting portion 332 outside the blade assembly 3 is greater than the height from the bottom surface of the receiving space 20 to the blade, and the height of the end portion 331 is less than or equal to the height from the bottom surface of the receiving space 20 to the blade.

[0044] By setting a connecting piece 33, the connecting piece 33 is connected to the blade assembly 3, and the connecting piece 33 has an end 331 and a mounting portion 332. When the blade assembly 3 is installed on the body 1, according to the positions of the end 331 and the mounting portion 332, the end 331 is placed toward the accommodating space 20, so that the blade assembly 3 can be installed on the body 1. If the blade assembly 3 is reversed, since the height of the mounting portion 332 outside the blade assembly 3 is greater than the height from the bottom surface of the accommodating space 20 to the blade, the blade assembly 3 will not be able to be normally installed on the body 1, thereby achieving the reverse installation of the blade assembly 3 on the body 1, thereby ensuring the cutting performance of the lawn mower 100.

[0045] The implementation details of this embodiment are described in detail below. The following content is only provided for easy understanding of the implementation details and is not necessary for implementing this solution.

[0046] Furthermore, if Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, there are multiple blades, which are overlapped and fixed; the blade facing the fan 2 among the multiple blades is the upper blade 31, and the blade facing away from the fan 2 is the lower blade 32. A first positioning hole 310 is provided on the upper blade 31, and a second positioning hole 320 is provided on the lower blade 32. The mounting portion 332 is provided with a first matching portion 3321 and a second matching portion 3322 arranged along the height of the mounting portion 332. The shape of the first matching portion 3321 matches and corresponds to the hole type of the first positioning hole 310, and the shape of the second matching portion 3322 matches and corresponds to the hole type of the second positioning hole 320; the first matching portion 3321 is installed in the first positioning hole 310, and the second matching portion 3322 is installed in the second positioning hole 320. The hole types of the first positioning hole 310 and the second positioning hole 320 are different, so as to avoid the upper blade 31 and the lower blade 32 from being installed in reverse. The fixing of the fastener 34 prevents the upper blade 31 and the lower blade 32 from being detached from the connecting member 33. In this embodiment, the number of blades is 2. In other embodiments, the number of blades is not limited to two, and may be 1 or more than 2. When there is only one blade, the connecting piece 33 can also be installed to place the blade assembly 3 reversely mounted on the body 1.

[0047] In addition, the connecting member 33 is a bolt, and the fastening member 34 is a nut.

[0048] Alternatively, if Figure 5 , Figure 6 and Figure 7 As shown, the first matching portion 3321 is polygonal, the shape of the first positioning hole 310 is the same as that of the first matching portion 3321, and the first matching portion 3321 can be installed in the first positioning hole 310. The second matching portion 3322 is circular, the shape of the second positioning hole 320 is the same as that of the second matching portion 3322, and the second matching portion 3322 can be installed in the second positioning hole 320, but cannot be installed in the first positioning hole 310. The first matching portion 3321 radially protrudes outside the second matching portion 3322, and the end portion 331 radially protrudes outside the first matching portion 3321.

[0049] In addition, if Figure 2 and Figure 8 As shown, the accommodating space 20 is in a circular ring shape with the rotation axis of the blade assembly 3 as the center, so that when the blade assembly 3 is installed on the body 1, due to installation errors and other conditions, the end 331 is located in the accommodating space 20 for better adaptability.

[0050] Furthermore, if Figure 2 and Figure 4 As shown, the end portion 331 is separated from the wall of the accommodating space 20 , that is, the end portion 331 is separated from the side wall and the bottom surface of the accommodating space 20 , so that the end portion 331 of the connecting member 33 can enter the accommodating space 20 .

[0051] Furthermore, if Figure 4 and Figure 8 As shown, the fan 2 has a mounting base 21 on the side facing away from the body 1, and the mounting base 21 has a boss 22 penetrated by the blade assembly 3. The locking member 6 penetrates the blade assembly and the boss 22 and is fixed to the rotating shaft of the motor 4.

[0052] Specifically, Figure 4 and Figure 8 As shown, the upper blade 31 is attached to the mounting base 21 of the fan 2, the height of the mounting portion 332 outside the blade assembly 3 is greater than the height of the accommodating space 20, and the height of the end portion 331 is less than or equal to the height of the accommodating space 20. Therefore, when the blade assembly 3 is installed upside down, the mounting portion 332 cannot be accommodated in the accommodating space 20, and the blade cannot be fixedly connected to the rotating shaft of the motor 4, thereby preventing the blade assembly 3 from being installed upside down as a whole.

[0053] Furthermore, if Figure 2 As shown, the accommodating space 20 is arranged around the outer periphery of the mounting base 21. There are a plurality of connecting members 33, and at least one connecting member 33 is arranged on both radial sides of the locking member 6.

[0054] In addition, if Figure 2 and Figure 4 As shown, a disc-shaped gasket 61 is installed between the locking member 6 and the blade assembly 3. The blade assembly 3 is fixedly connected to the rotating shaft of the motor 4 through the locking member 6, and a disc-shaped gasket 61 is installed between the locking member 6 and the blade assembly 3 to increase the contact area between the gasket and the blade, enhance the force effect, and improve the locking force.

[0055] Preferred embodiments of the present invention have been described in detail above, but it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide further embodiments.

[0056] These and other changes can be made to the embodiments in light of the above detailed description.In general, in the claims, the terms used should not be considered limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which these claims are entitled.

[0057] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A lawn mower, comprising: body; A fan, wherein the fan is arranged at the bottom of the fuselage; A blade assembly, wherein the blade assembly is arranged at the bottom of the fuselage and located on a side of the fan away from the fuselage; as well as A motor, the motor being mounted on the fuselage; the motor driving the fan and the blade assembly to rotate, and the blade assembly penetrating the fan through a locking member and fixedly connected to the rotating shaft of the motor; The blade assembly comprises: a blade, a connecting member arranged on the blade, and a fastener for locking the connecting member on the blade; the connecting member has a mounting portion penetrating the blade and an end portion connected to the mounting portion; The fan has a accommodating space on one side facing the blade assembly, and the accommodating space is used to accommodate the end of the connecting piece; the height of the mounting portion outside the blade assembly is greater than the height from the bottom of the accommodating space to the blade, and the height of the end is less than or equal to the height from the bottom of the accommodating space to the blade.

2. The lawn mower according to claim 1, characterized in that The blades are multiple and overlapped and fixed. The blades facing the fan are upper blades, and the blades facing away from the fan are lower blades. The upper blade is provided with a first positioning hole, and the lower blade is provided with a second positioning hole; The mounting portion is provided with a first matching portion and a second matching portion arranged along the height of the mounting portion; the shape of the first matching portion matches and corresponds to the hole type of the first positioning hole, and the shape of the second matching portion matches and corresponds to the hole type of the second positioning hole; the first matching portion is installed in the first positioning hole, and the second matching portion is installed in the second positioning hole.

3. The lawn mower according to claim 2, characterized in that The first matching portion is polygonal, and the second matching portion is circular; the first matching portion radially protrudes outside the second matching portion, and the end portion radially protrudes outside the first matching portion.

4. The lawn mower according to claim 1, characterized in that The accommodating space is in a circular ring shape with the rotating shaft of the blade assembly as the center.

5. The lawn mower according to claim 4, characterized in that The end portion is spaced apart from a wall surface of the accommodating space.

6. The lawn mower according to claim 1, characterized in that The connecting piece is a bolt, and the fastening piece is a nut.

7. The lawn mower according to claim 1, characterized in that A disc-shaped gasket is installed between the locking piece and the blade assembly.

8. The lawn mower according to claim 1, characterized in that The fan has a mounting base on one side facing away from the body, and the mounting base has a boss penetrated by the blade; the locking member penetrates the blade and the boss and is fixed to the rotating shaft of the motor.

9. The lawn mower according to claim 8, characterized in that The blades are multiple and overlapped and fixed. The blades facing the fan are upper blades, and the blades facing away from the fan are lower blades. The upper blade is in contact with the installation bottom of the fan; The height of the mounting portion outside the blade assembly is greater than the height of the accommodating space, and the height of the end portion is less than or equal to the height of the accommodating space.

10. The lawn mower according to claim 9, characterized in that The accommodating space is arranged around the outer periphery of the mounting base; There are a plurality of connecting members, and at least one connecting member is disposed on both radial sides of the locking member.

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