Grass collecting structure of mower
By designing a grass collection structure with a ventilation hood and an annular boss in the lawn mower, the problems of low grass collection rate in low gear and poor motor cooling effect of the lawn mower are solved, and efficient cooling of the motor and improved grass collection effect are achieved.
Patent Information
- Application Number
- CN202422562466.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-22
AI Technical Summary
When mowing at a low gear, the existing lawn mower has a low grass collection rate and poor motor cooling effect, and the cooling effect of the airflow generated by the blade is weak.
A grass collecting structure for a lawn mower is designed. A ventilation hood is used to cover the motor and form a centralized heat dissipation duct. The cooling air enters the inner cavity from the air inlet, contacts the motor, and is discharged from the air outlet. An annular boss and a guide opening are combined to form an annular air outlet channel, which enhances the cooling air flow rate and pressure and guides the cooling air to the grass collecting port.
It improves the cooling effect of the motor and the grass collecting efficiency, increases the airflow in the chassis, ensures the operating efficiency of the motor and improves the grass collecting effect.
Smart Images
Figure CN223310289U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of agricultural machinery, and in particular to a grass collecting structure of a lawn mower. Background Art
[0002] A lawn mower uses a motor to drive the rotating blades to cut the lawn. The chassis is designed as a volute. The blades generate airflow as they rotate and cut the grass, driving the cut grass clippings along the volute into the grass collection box. Due to the low chassis, it is difficult for the blades to draw air from the outside while rotating and cutting the grass. When mowing at low gear, relying solely on the airflow generated by the rotation of the blades, the grass collection rate is low. At the same time, the motor heats up due to long-term operation. Although the airflow generated by the blades has a certain cooling effect on the motor, its path, speed, and direction are not specifically designed for heat dissipation. Relying solely on the airflow generated by the blades to cool the motor is not very effective. Therefore, how to ensure that the grass collection mechanism can both ensure the cooling effect of the motor and increase the airflow of the chassis during use has become an urgent problem that needs to be solved. Utility Model Content
[0003] The purpose of the present application is to provide a grass collecting structure of a lawn mower, so as to improve the motor cooling effect of the grass collecting structure during use and increase the chassis airflow.
[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a grass collecting structure of a lawn mower, comprising: a chassis, a volute is provided on the chassis; a motor, the motor is connected to the volute; a ventilation hood, the ventilation hood is connected to the volute, and the ventilation hood is provided with an inner cavity, the inner cavity is connected to the air inlet and the air outlet of the ventilation hood to form an air duct, and the ventilation hood covers the motor so that the motor is placed in the inner cavity.
[0005] As a preferred embodiment, the volute is provided with a grass collecting chamber, the motor is externally connected to a cutting end, and the cutting end leads to the grass collecting chamber; wherein, the air outlet of the ventilation hood is provided on one side of the cutting end, and the air outlet is connected to the grass collecting chamber.
[0006] As another preferred embodiment, the volute is provided with an annular boss on one side of the air outlet, the annular boss is placed in the grass collecting chamber, and the inner wall of the annular boss is arranged around the air outlet.
[0007] It is further preferred that the grass collecting chamber is provided with a grass collecting flow channel and a grass collecting port, the flow direction of the grass collecting flow channel is consistent with the rotating wind direction of the cutting end, and the grass cut by the cutting end is transported and discharged from the grass collecting flow channel to the grass collecting port; the annular boss is provided with a guide opening, and the guide opening smoothly transitions between the side close to the air outlet and the annular boss, and the guide opening is used to guide the wind discharged from the air outlet, and the guide opening is arranged toward the grass collecting port.
[0008] Further preferably, the diameter of the guide opening is smaller than the diameter of the annular boss.
[0009] Further preferably, a raised plate is provided on the side of the cutting end facing the air outlet, and the raised plate is placed in the annular boss, and the raised plate rotates with the rotation of the cutting end; wherein, the raised plate rotates to cooperate with the inner wall of the annular boss to guide the wind direction to the guide opening.
[0010] Further preferably, a plurality of ribs are arranged at intervals on the outer wall of the volute, and the plurality of ribs are arranged around the periphery of the motor.
[0011] Further preferably, the ribs are located on the outer wall of the volute and arranged vertically upward along the direction of gravity.
[0012] Further preferably, one end of the air inlet of the ventilation hood is connected to a baffle, and the baffle is provided with a plurality of openings for cooling air to enter from the air inlet.
[0013] Further preferably, in the air duct, along the direction of gravity, the setting position of the air inlet is higher than the setting position of the air outlet, and the cooling air enters from the air inlet, passes through the inclined section, the horizontal section and the vertical section to reach the air outlet.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] The inner cavity of the ventilation hood is connected to the air inlet, and the cooling air enters from the air inlet, passes through the inner cavity, and is discharged from the air outlet. Since the motor is covered in the ventilation hood, the cooling air directly contacts the entire motor in the inner cavity for cooling after passing through the air inlet, and is discharged from the air outlet after cooling. A more concentrated heat dissipation air duct is created through the ventilation hood to reduce the flow space of the cooling air. At the same time, the entire motor is wrapped by the ventilation hood, so the cooling air can fully cool the motor and can make the cooling air contact with the motor faster, speeding up the cooling air flow rate, and forming a ring-shaped air outlet channel, thereby increasing the cooling air flow rate and wind pressure, as well as the air volume at the chassis position, and this wind direction is blown toward the grass collection port, effectively improving the grass collection efficiency, and improving the cooling effect of the motor, ensuring the motor operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural diagram of the grass collecting structure;
[0017] Figure 2 It is a cross-sectional view of the grass collecting structure;
[0018] Figure 3 It is a structural diagram of the grass collecting cavity part in the grass collecting structure;
[0019] Figure 4 This is a structural diagram of the grass collecting structure from an upward perspective;
[0020] Figure 5 It is a structural diagram of the grass collecting port position in the grass collecting structure;
[0021] Figure 6 This is a schematic diagram of the grass collection structure connected to the grass box structure.
[0022] In the figure: 1. Grass collecting structure; 10. Chassis; 20. Volute; 21. Grass collecting chamber; 211. Grass collecting flow channel; 212. Grass collecting port; 30. Motor; 31. Cutting end; 311. Raised plate; 40. Ventilation hood; 41. Inner cavity; 42. Air inlet; 43. Air outlet; 50. Annular boss; 51. Guide opening; a. Caliber; b. Diameter; 60. Rib; 70. Baffle; e. Inclined section; f. Horizontal section; g. Vertical section; 70. Grass combing mechanism; 80. Grass box structure. DETAILED DESCRIPTION
[0023] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0024] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.
[0025] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.
[0026] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.
[0027] In a preferred embodiment, see Figures 1 to 6 The present application provides a grass collecting structure 1 of a lawn mower, comprising: a chassis 10, on which a volute 20 is provided; a motor 30, which is connected to the volute 20; a ventilation hood 40, which is connected to the volute 20, and the ventilation hood 40 is provided with an inner cavity 41, which is connected to an air inlet 42 and an air outlet 43 of the ventilation hood 40 to form an air duct, and the ventilation hood 40 covers the motor 30 so that the motor 30 is placed in the inner cavity 41.
[0028] Among them, the inner cavity 41 of the ventilation hood 40 is connected to the air inlet 42, and the cooling air enters from the air inlet 42, passes through the inner cavity 41, and is discharged from the air outlet 43. Since the motor 30 is covered in the ventilation hood 40, the cooling air directly contacts the entire motor 30 in the inner cavity 41 for cooling after passing through the air inlet 42, and is discharged from the air outlet 43 after cooling. A more concentrated heat dissipation air duct is created through the ventilation hood 40 to reduce the flow space of the cooling air. At the same time, the entire motor 30 is wrapped by the ventilation hood 40, so the cooling air can fully cool the motor 30, and at the same time, it can make the cooling air contact with the motor 30 faster, speed up the cooling air flow rate, improve the cooling effect of the motor 30, and ensure the operating efficiency of the motor 30.
[0029] Furthermore, in the air duct, along the direction of gravity, the setting position of the air inlet 42 is higher than the setting position of the air outlet 43. The cooling air enters from the air inlet 42, passes through the inclined section e, the horizontal section f and the vertical section g to reach the air outlet 43.
[0030] The air inlet 42 is at the top and the air outlet 43 is at the bottom, which makes it easier for the cooling air to circulate. The setting of the inclined section e guides the inflow of the cooling air to a certain extent, so that the cooling air contacts the motor 30 faster and speeds up the cooling air flow rate. The motor 30 is set on the vertical section g to ensure that the cooling air can cool the entire motor 30 in all directions.
[0031] Further preferably, a baffle 70 is connected to one end of the air inlet 42 of the ventilation hood 40. The baffle 70 is provided with multiple openings for cooling air to enter from the air inlet 42. The baffle 70 blocks the outside of the air inlet 42 to prevent grass clippings from entering to a certain extent. At the same time, the openings provided on the baffle 70 can ensure that the air volume entering the air inlet 42 is not too small.
[0032] As a preferred embodiment, the volute 20 is provided with a grass collecting chamber 21, the motor 30 is externally connected to the cutting end 31, and the cutting end 31 leads to the grass collecting chamber 21; wherein, the air outlet 43 of the ventilation hood 40 is provided on one side of the cutting end 31, and the air outlet 43 is connected to the grass collecting chamber 21.
[0033] As another preferred embodiment, an annular boss 50 is provided on one side of the volute 20 located at the air outlet 43 . The annular boss 50 is placed in the grass collecting chamber 21 , and the inner wall of the annular boss 50 is arranged around the air outlet 43 .
[0034] Further preferably, the grass collecting chamber 21 is provided with a grass collecting flow channel 211 and a grass collecting port 212. The flow direction of the grass collecting flow channel 211 is consistent with the rotating wind direction of the cutting end 31. The grass cut by the cutting end 31 is transported and discharged from the grass collecting flow channel 211 toward the grass collecting port 212. It should be noted that the cutting end 31 is provided with a rotating blade. Through the rotation of the rotating blade, a certain amount of air flow is formed to drive the grass clippings to be discharged from the grass collecting port 212; the annular boss 50 is provided with a guide opening 51, which is used to guide the wind discharged from the air outlet 43, and the guide opening 51 is arranged toward the grass collecting port 212.
[0035] It should be noted that the guide opening 51 is specifically a guiding channel, and the annular boss 50 protrudes from the bottom of the volute 20. The annular boss 50 encloses an annular space and is connected to the guide opening 51 at the same time, thereby forming an annular air outlet channel, and the air outlet position of the guide opening 51 is toward the grass collection port 212. The annular air outlet channel can narrow the flow space of the cooling air discharged from the air outlet 43 to generate negative pressure, greatly increasing the cooling air flow rate and wind pressure. At the same time, the cooling air can eventually be blown toward the grass collection port 212, so that the bottom area of the volute 20 has a double airflow in the same direction formed by the cooling air and the blade at the same time, and the air volume is increased, thereby improving the grass collection efficiency.
[0036] At the same time, the smooth transition between the guide opening 51 and the annular boss 50 can effectively reduce the occurrence of grass jams when the grass collecting structure 1 collects grass at the position of the volute 20, thereby improving the smoothness of grass collection.
[0037] It is further preferred that the diameter a of the guide opening 51 is smaller than the diameter b of the annular boss 50, so that after the cooling air is discharged from the air outlet 43, it is guided by the annular boss 50. The setting of the narrower guide opening 51 can enable the cooling air passing through the guide opening 51 to pass through a narrower circulation space, thereby further increasing the negative pressure and further increasing the flow rate and wind pressure of the cooling air.
[0038] Further preferably, a raised plate 311 is provided on the side of the cutting end 31 facing the air outlet 43, and the raised plate 311 is placed in the annular boss 50. The raised plate 311 rotates as the cutting end 31 rotates; wherein, the raised plate 311 rotates to cooperate with the inner wall of the annular boss 50 to guide the wind direction to the guide opening 51.
[0039] Further preferably, a plurality of ribs 60 are arranged at intervals on the outer wall of the volute 20, and the plurality of ribs 60 are arranged around the periphery near the motor 30. Specifically, the ribs 60 are installed on the mounting seat on the outer wall of the volute 20 to strengthen the strength of the mounting seat, and the mounting seat is used to install the motor 30 and the ventilation hood 40.
[0040] At the same time, further, the ribs 60 are located on the outer wall of the volute 20 and are arranged vertically upward along the direction of gravity. The upward arrangement of the ribs 60 can prevent grass residues from being deposited on the ribs 60 when collecting grass, making the surface of the volute 20 relatively flat and smooth, and improving the convenience of cleaning the surface of the volute 20.
[0041] For further information, see Figure 1 A grass combing mechanism 70 is connected to the front end of the chassis 10, and a tooth-like structure is evenly distributed on the front end of the grass combing mechanism 70. When the lawn mower is in use, the grass combing mechanism 70 can comb the fallen grass stems upright, helping the lawn mower to pass through the lawn more smoothly when mowing, so as to better complete the cutting operation and make the lawn more neat and beautiful. If the grass combing mechanism 70 is not provided, the fallen grass will make the lawn look messy and affect the overall landscape effect. At the same time, for lawns with relatively lush growth, the grass combing mechanism 70 can help separate the intertwined grass blades, allowing each blade of grass to fully receive sunlight and air, promoting the healthy growth of the lawn. Over time, a layer of dead grass will accumulate on the lawn. The grass combing mechanism 70 can effectively remove this layer of dead grass, preventing the dead grass layer from becoming too thick and affecting the growth of new grass. An excessively thick layer of dead grass will hinder the penetration of water and nutrients and easily breed pests and diseases.
[0042] At the same time, the teeth of the grass-combing mechanism 70 can penetrate deeper into the lawn, better picking up and combing fallen grass stems and dead grass. Compared to a smooth structure, the teeth have a larger contact area, allowing for more effective interaction with the grass. The teeth are also less likely to deform or damage, extending the life of the lawn mower.
[0043] Preferably, the grass collecting structure 1 is externally connected to a grass box structure 80 , so that the grass clippings blown out through the grass collecting port 212 in the grass collecting structure 1 can completely enter the grass box structure 80 , completing the grass collecting operation.
[0044] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.
Claims
1. A grass collecting structure of a lawn mower, characterized in that: include: a chassis, wherein a volute is provided on the chassis; a motor connected to the volute; A ventilation hood is connected to the volute, and the ventilation hood is provided with an inner cavity, the inner cavity is communicated with the air inlet and the air outlet of the ventilation hood to form an air duct, and the ventilation hood covers the motor so that the motor is placed in the inner cavity.
2. The grass collecting structure of the lawn mower according to claim 1, characterized in that: The volute is provided with a grass collecting chamber, the motor is externally connected to a cutting end, and the cutting end leads out of the grass collecting chamber; Wherein, the air outlet of the ventilation hood is arranged on one side of the cutting end, and the air outlet is connected to the grass collecting chamber.
3. The grass collecting structure of the lawn mower according to claim 2, characterized in that: The volute is provided with an annular boss on one side of the air outlet. The annular boss is placed in the grass collecting cavity, and the inner wall of the annular boss is arranged around the air outlet.
4. The grass collecting structure of the lawn mower according to claim 3, characterized in that: The grass collecting chamber is provided with a grass collecting flow channel and a grass collecting port. The flow direction of the grass collecting flow channel is consistent with the rotation wind direction of the cutting end. The grass cut by the cutting end is transported and discharged from the grass collecting flow channel to the grass collecting port. The annular boss is provided with a guide opening, and the guide opening is smoothly transitioned between the side close to the air outlet and the annular boss. The guide opening is used to guide the wind discharged from the air outlet, and the guide opening is arranged toward the grass collection port.
5. The grass collecting structure of the lawn mower according to claim 4, characterized in that: The diameter of the guide opening is smaller than the diameter of the annular boss.
6. The grass collecting structure of the lawn mower according to claim 4, characterized in that: A raised plate is provided on the side of the cutting end facing the air outlet, the raised plate is placed in the annular boss, and the raised plate rotates as the cutting end rotates; The raised plate is rotated to cooperate with the inner wall of the annular boss to guide the wind to the guide opening.
7. The grass collecting structure of a lawn mower according to any one of claims 1 to 6, characterized in that: The outer wall of the volute is further provided with a plurality of ribs at intervals, and the plurality of ribs are arranged around the periphery of the motor.
8. The grass collecting structure of the lawn mower according to claim 7, characterized in that: The ribs are located on the outer wall of the volute and are arranged vertically upward along the direction of gravity.
9. The grass collecting structure of a lawn mower according to any one of claims 1 to 6, characterized in that: One end of the air inlet of the ventilation hood is connected to a baffle, and the baffle is provided with a plurality of openings for cooling air to enter from the air inlet.
10. The grass collecting structure of a lawn mower according to any one of claims 1 to 6, characterized in that: In the air duct, along the direction of gravity, the setting position of the air inlet is higher than the setting position of the air outlet. The cooling air enters from the air inlet and passes through the inclined section, the horizontal section and the vertical section to reach the air outlet.