Lawn mower

Abstract

The utility model discloses a mower. The mowing machine comprises a self-walking mechanism, a mowing mechanism and a mowing mechanism, an encoding switch; the speed adjusting knob rotates to adjust a rotating shaft of the coding switch; the self-propelled device is connected with the self-propelled mechanism and drives the self-propelled mechanism; the controller is electrically connected with the coding switch and a driving piece in the self-propelled device; wherein the speed regulation knob regulates the coding switch, the coding switch sends an electric signal to the controller after being regulated, and the controller controls the rotating speed of the driving part. Compared with the prior art, the speed of the self-walking mechanism of the mower can be accurately controlled.

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 self-propelled mechanism of a lawn mower generally needs to be adjusted according to the usage. The existing self-propelled mechanism of a lawn mower generally adjusts the potentiometer by turning the speed knob. After the self-propelled mechanism controller receives the signal from the potentiometer, it controls the speed of the self-propelled motor to change the self-propelled speed of the lawn mower. However, the potentiometer changes the output signal by changing the resistance value. There is a rotation error when turning the knob, and the accuracy cannot be guaranteed. Utility Model Content

[0004] The utility model aims to provide a lawn mower, which can accurately control the speed of the self-propelled mechanism of the lawn mower.

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

[0006] Self-propelled mechanism;

[0007] Coding switch;

[0008] A speed regulating knob, wherein the speed regulating knob is rotated to adjust the rotating shaft of the coding switch;

[0009] A self-propelled vehicle, the self-propelled vehicle is connected to the self-propelled mechanism and drives the self-propelled mechanism; and

[0010] A controller, the controller being electrically connected to the coding switch and a driving member in the self-propelled device;

[0011] The speed regulating knob adjusts the coding switch, and the coding switch sends an electrical signal to the controller after being adjusted; the controller receives the electrical signal from the coding switch and controls the rotation speed of the driving member after receiving the electrical signal.

[0012] Compared with the prior art, the embodiment of the utility model drives the rotating shaft of the coding switch to rotate by rotating the speed knob. As the mechanical rotation angle of the coding switch changes, multiple groups of different circuits are formed inside the coding switch, so that the mechanical motion is converted into an electrical signal. This method has higher conversion accuracy and smaller error when adjusting the speed. The electrical signal is transmitted to the controller through the output pin on the coding switch, and the controller controls the driving member in the self-propelled device to drive the self-propelled mechanism to move.

[0013] In one embodiment, the speed regulating knob includes a knob body and a linkage member fixedly connected to the knob body, and the rotating shaft of the coding switch is inserted and fixed in the linkage member.

[0014] In one embodiment, the rotating shaft of the coding switch is a flat shaft; and a notch matching the rotating shaft of the coding switch is formed in the linkage member.

[0015] In one embodiment, the lawn mower further comprises: a body, and an operating rod connected to the body;

[0016] The self-propelled mechanism is connected to the fuselage; the speed regulating knob, the coding switch and the linkage member are arranged on the operating rod.

[0017] In one embodiment, the operating rod comprises: a mounting shell with a mounting cavity, and a cover shell closing the mounting shell; the speed regulating knob is arranged on a side of the cover shell away from the mounting shell, and the linkage member passes through the cover shell and is fixed to the speed regulating knob;

[0018] The installation cavity is provided with an interface for docking with the coding switch; the coding switch is placed in the installation cavity.

[0019] In one embodiment, a rubber ring is sandwiched between the linkage member and the cover shell.

[0020] In one embodiment, the linkage member has an insertion shaft inserted into the speed control knob, and a mounting disk connected to the insertion shaft, and the rotating shaft of the coding switch is inserted into the mounting disk;

[0021] A side of the installation plate facing away from the coding switch is provided with an annular groove for embedding the rubber ring, and the rubber ring abuts against the cover shell.

[0022] In one embodiment, the lawn mower further comprises: a motor, a blade assembly and a fan arranged on the body; the motor drives the blade assembly and the fan to rotate;

[0023] A cover body is installed on the top of the fuselage, and the cover body covers the motor; the controller is installed in the cover body, a first air flow channel is opened in the cover body, and a second air flow channel is opened in the motor; the motor drives the fan to rotate so that the airflow passes through the first air flow channel, flows through the controller, and flows out from the second air flow channel.

[0024] In one embodiment, the self-propelled mechanism comprises: a pinion connected to the self-propelled device, a large gear meshing with the pinion, and a travel wheel fixed to the large gear;

[0025] The controller controls the driving member in the self-propelled vehicle to drive the small gear to rotate, the small gear rotation drives the large gear rotation, and the large gear rotation drives the walking wheel rotation.

[0026] In one embodiment, the lawn mower further comprises: a motor, a blade assembly and a fan arranged on the body; the motor drives the blade assembly and the fan to rotate;

[0027] The self-propelled device is arranged on a side of the traveling wheel facing the blade assembly through a fixing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a lawn mower according to an embodiment of the utility model;

[0029] Figure 2 is a cross-sectional view of a lawn mower according to an embodiment of the utility model;

[0030] Figure 3 yes Figure 2 A partial enlarged view of middle A;

[0031] Figure 4 It is a structural schematic diagram of a motor connected to a fan according to an embodiment of the utility model;

[0032] Figure 5 yes Figure 4 A top view of

[0033] Figure 6 is a cross-sectional view of an operating rod according to an embodiment of the utility model;

[0034] Figure 7 yes Figure 6 A partial enlarged view of B in the middle;

[0035] Figure 8 It is a structural schematic diagram of a coding switch according to an embodiment of the utility model;

[0036] Fig. 9 It is a structural schematic diagram of a linkage member according to an embodiment of the utility model;

[0037] Fig.10 It is a structural schematic diagram of a self-propelled device on a fuselage connected to a connected self-propelled mechanism according to an embodiment of the utility model;

[0038] Fig.11 It is a schematic diagram of the internal structure of the self-propelled device connected to the self-propelled mechanism in one embodiment of the utility model. DETAILED DESCRIPTION

[0039] 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.

[0040] 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."

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] Embodiments of the present invention are described below with reference to the accompanying drawings.

[0046] This example relates to a lawn mower 100. Figure 1 , Figure 2 and Figure 3As shown, the lawn mower 100 includes: a body 11, a fan 22, a blade assembly 33 and a motor 44. The motor 44 is mounted on the body 11, and the fan 22 and the blade assembly 3 are arranged on the 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 motor 4 by a locking member penetrating the fan 2, and the locking member can be a bolt or other conventional mechanical fixing member. A controller 90 is arranged on the body 1, and the controller 90 controls the motor 4 to rotate the fan 2 and the blade assembly 3. The blade assembly 3 can be formed by two blades overlapping and fixed. The lawn mower 100 also includes: a self-propelled mechanism 10, a coding switch 7, a speed knob 8, a self-propelled device 9 and a controller 90. The speed knob 8 rotates the rotating shaft 71 of the coding switch 7. The self-propelled device 9 is connected to the self-propelled mechanism 10 and drives the self-propelled mechanism 10. The controller 90 is electrically connected to the coding switch 7 and the driving member 92 in the self-propelled device 9. The speed knob 8 adjusts the coding switch 7, and the coding switch 7 sends an electrical signal to the controller 90 after being adjusted. The electrical signal received by the controller 90 controls the rotation speed of the driving member 92, which can be a driving motor.

[0047] like Figure 1 , Figure 6 , Figure 7 as well as Fig.10 As shown, the coding switch 7 is correspondingly installed at the speed knob 8. When the speed knob 8 is turned, the coding switch 7 inside the knob rotates, and the speed adjustment of multiple gears can be realized. With the different mechanical rotation angles of the coding switch 7, multiple groups of different circuits will be formed inside the coding switch 7, and different circuits will send different power generation signals, so that the mechanical motion is converted into an electrical signal. This method has higher conversion accuracy and smaller error during speed adjustment. Then the electrical signal is transmitted to the controller 90 through the output pin on the coding switch 7. After receiving the electrical signal, the controller 90 controls the driving member 92 in the self-propelled device 9 to rotate, and the driving member 92 drives the self-propelled mechanism 10 to walk. The rotation speed of the driving member 92 is related to the electrical signal. When the controller 90 receives different electrical signals, the rotation speed of the driving member 92 is also different. When the speed knob 8 is in different gears, the self-propelled speed of the lawn mower 100 walks at a uniform speed at the speed set by the gear.

[0048] 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.

[0049] Furthermore, if Figure 6 , Figure 7As shown, the lawn mower 100 further includes: an operating rod 5 connected to the machine body 1. The self-propelled mechanism 10 is connected to the machine body 1, and the speed knob 8, the coding switch 7, and the linkage member 82 are arranged on the operating rod 5.

[0050] Furthermore, if Figure 6 , Figure 7 As shown, the speed knob 8 includes a knob body 81 and a linkage member 82 fixedly connected to the knob body 81, and the rotating shaft 71 of the coding switch 7 is inserted and fixed in the linkage member 82. The rotation of the knob body 81 drives the linkage member 82, and the linkage member 82 drives the rotating shaft 71 of the coding switch 7 to rotate, thereby realizing the rotation adjustment of different gears.

[0051] In addition, if Figure 6 , Figure 7 , Figure 8 As shown, the rotating shaft 71 of the coding switch 7 is a flat shaft. A notch 820 matching the rotating shaft 71 of the coding switch 7 is provided in the linkage member 82. The notch 820 is in the shape of a flat sleeve, and the flat shaft matches the notch 820, which increases the gear sense of the speed control knob 8 when it is turned, making it easier for the user to perceive the change in gear adjustment.

[0052] Furthermore, if Figure 6 , Figure 7 As shown, the operating rod 5 includes: a mounting shell 51 with a mounting cavity 510, and a cover shell 52 that closes the mounting shell 51; the speed knob 8 is arranged on the side of the cover shell 52 away from the mounting shell 51, and the linkage member 82 passes through the cover shell 52 and is fixed to the speed knob 8. The mounting cavity 510 has an interface 53 that is connected to the coding switch 7. The coding switch 7 is placed in the mounting cavity 510, and the pins of the coding switch 7 are connected to the interface 53. The interface 53 is connected to the controller 90 through wires, and the wires are routed along the operating rod 5. The controller 90 includes a PCB control board. 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 walk.

[0053] In addition, a rubber ring is sandwiched between the linkage member 82 and the cover shell 52. The rubber ring reduces the shaking feeling when the speed knob 8 is turned, makes the parts fit more tightly, increases the damping feeling, and enhances the user experience.

[0054] Specifically, Figure 6 , Figure 7 and Fig. 9 As shown, the linkage member 82 has an insertion shaft 821 inserted into the speed control knob 8, and a mounting plate 822 connected to the insertion shaft 821, and the rotating shaft 71 of the coding switch 7 is inserted into the mounting plate 822. The mounting plate 822 has an annular groove 8220 embedded in a rubber ring on the side away from the coding switch 7, and the rubber ring is against the cover shell 52.

[0055] Furthermore, if Fig.10 and Fig.11 As shown, the self-propelled mechanism 10 includes: a small gear 101 connected to the self-propelled device 9, a large gear 102 meshing with the small gear 101, and a running wheel 103 fixed to the large gear 102. The controller 90 controls the driving member 92 in the self-propelled device 9 to drive the small gear 101 to rotate, the small gear 101 rotates to drive the large gear 102 to rotate, and the large gear 102 rotates to drive the running wheel 103 to rotate. This meshing method has higher transmission accuracy.

[0056] In addition, if Fig.10 and Fig.11 As shown, the self-propelled device 9 is arranged on the side of the traveling wheel 103 facing the blade assembly 3 through a fixing seat 91 .

[0057] Furthermore, if Figure 3 , Figure 4 and Figure 5 As shown, the lawn mower 100 further includes: a cover body 6, the cover body 6 is connected to the body 1, covers the motor 4, and the controller 90 is installed in the cover body 6. Figure 3 The middle arrow B is the direction of air flow. An air inlet 60 is provided on the cover body 6, and the opening of the air inlet 60 faces downward, and a first air flow channel 63 is provided in the cover body 6 to communicate with the air inlet 60. The motor 4 has an air outlet 40 and a second air flow channel 41 to communicate with the air outlet 40 and the first air flow channel 63. The motor 4 drives the fan 2 to rotate so that the air flow enters the first air flow channel 63 from the air inlet 60, flows through the controller 90, then flows into the second air flow channel 41, and flows out from the air outlet 40. The air outlet 40 is provided at the bottom of the motor 4. The motor 4 drives the fan 2 to rotate, and the air flow flows out from the air outlet 40 and flows out from the interval between the fan 2 and the motor 4. The motor 4 includes: a cover 42 and a coil support 43. The top of the cover 42 has a hollow area for the air flow to enter the interior of the motor 4. The coil support 43 has a plurality of radially extending branches, and the plurality of branches are arranged circumferentially around the main axis of the motor 4, and two adjacent branches are spaced to form a second air flow channel 41.

[0058] In addition, if Figure 3 As shown, the cover body 6 includes an upper cover 61 and a lower cover 62 , the air inlet 60 is opened on the lower cover 62 , and the upper part of the air inlet 60 is covered by the upper cover 61 .

[0059] In this example, the speed knob 8 and the coding switch 7 are disposed on the operating rod 5 . In other embodiments, the speed knob 8 and the coding switch 7 may be disposed on the body 1 or other areas of the lawn mower 100 .

[0060] 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.

[0061] 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.

[0062] 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, characterized in that: include: Self-propelled mechanism; Coding switch; A speed regulating knob, wherein the speed regulating knob is rotated to adjust the rotating shaft of the coding switch; A self-propelled device, the self-propelled device is connected to the self-propelled mechanism and drives the self-propelled mechanism; as well as A controller, the controller being electrically connected to the coding switch and a driving member in the self-propelled device; The speed regulating knob adjusts the coding switch, and the coding switch sends an electrical signal to the controller after being adjusted; the controller receives the electrical signal from the coding switch and controls the rotation speed of the driving member after receiving the electrical signal.

2. The lawn mower according to claim 1, characterized in that The speed regulating knob comprises a knob body and a linkage member fixedly connected to the knob body, and the rotating shaft of the coding switch is inserted and fixed in the linkage member.

3. The lawn mower according to claim 2, characterized in that The rotating shaft of the coding switch is a flat shaft; the linkage member is provided with a notch matched with the rotating shaft of the coding switch.

4. The lawn mower according to claim 2, characterized in that The lawn mower further comprises: a body, and an operating rod connected to the body; The self-propelled mechanism is connected to the fuselage; the speed regulating knob, the coding switch and the linkage member are arranged on the operating rod.

5. The lawn mower according to claim 4, characterized in that The operating rod comprises: a mounting shell with a mounting cavity, and a cover shell closing the mounting shell; the speed regulating knob is arranged on a side of the cover shell away from the mounting shell, and the linkage member penetrates the cover shell and is fixed to the speed regulating knob; The installation cavity is provided with an interface for docking with the coding switch; the coding switch is placed in the installation cavity.

6. The lawn mower according to claim 5, characterized in that A rubber ring is clamped between the linkage member and the cover shell.

7. The lawn mower according to claim 6, characterized in that The linkage member has an insertion shaft inserted into the speed regulating knob, and a mounting plate connected to the insertion shaft, and the rotating shaft of the coding switch is inserted into the mounting plate; A side of the installation plate facing away from the coding switch is provided with an annular groove for embedding the rubber ring, and the rubber ring abuts against the cover shell.

8. The lawn mower according to claim 4, characterized in that The lawn mower further comprises: a motor, a blade assembly and a fan arranged on the body; the motor drives the blade assembly and the fan to rotate; A cover body is installed on the top of the fuselage, and the cover body covers the motor; the controller is installed in the cover body, a first air flow channel is opened in the cover body, and a second air flow channel is opened in the motor; the motor drives the fan to rotate so that the airflow passes through the first air flow channel, flows through the controller, and flows out from the second air flow channel.

9. The lawn mower according to claim 1, characterized in that The self-propelled mechanism comprises: a small gear connected to the self-propelled device, a large gear meshing with the small gear, and a traveling wheel fixed to the large gear; The controller controls the driving member in the self-propelled vehicle to drive the small gear to rotate, the small gear rotation drives the large gear rotation, and the large gear rotation drives the walking wheel rotation.

10. The lawn mower according to claim 9, characterized in that The lawn mower further comprises: a motor, a blade assembly and a fan arranged on the body; the motor drives the blade assembly and the fan to rotate; The self-propelled device is arranged on a side of the traveling wheel facing the blade assembly through a fixing seat.

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