Extended-range mower
The design of setting a buffer chamber and overflow channel outside the fuel tank solves the problem of fuel overflow to the generator, improving the safety of the lawn mower and the service life of the generator.
Patent Information
- Application Number
- CN202422380919.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-27
AI Technical Summary
When existing extended-range lawn mowers are filled with fuel, the fuel is prone to overflow to the generator, resulting in the risk of fire and safety accidents.
A first protective cover is provided on the outer cover of the fuel tank, and a buffer chamber and an overflow channel are provided. The buffer chamber collects overflowing fuel around the oil inlet, and guides the fuel to discharge to the outside through the overflow channel to prevent the fuel from dripping directly on the generator.
Effectively reduce fuel overflow to the generator, prevent fire accidents, and ensure the service life of the generator and the safety of the lawn mower.
Smart Images
Figure CN223286238U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lawn mowers, in particular to a range-extended lawn mower. Background Art
[0002] With technological advancements, lawn mowers are constantly evolving. One such evolutionary direction is the introduction of extended-range technology, which adds a generator to an electric-powered machine to provide additional power, thereby improving the efficiency and performance of the lawn mower. The generator is powered by fuel from a fuel tank, which is typically located above the generator and connected to the generator's oil inlet line. Fuel enters the generator by gravity. To replenish the fuel, the tank has an inlet. When the user refills the fuel, excessive force or excessive speed can cause the fuel to overflow from the tank. This overflow can drip onto the generator, potentially causing fires and other safety hazards. Utility Model Content
[0003] The purpose to be achieved by the utility model is to provide a range-extended lawn mower, which solves the problem of fuel overflowing onto the generator when refueling in the prior art, and effectively reduces the fuel overflowing onto the generator.
[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a range-extended lawn mower, comprising a frame, a cutting device, a battery, a generator and a fuel tank, wherein the battery supplies power to the cutting device, the generator is electrically connected to the battery, the fuel tank is connected to the oil inlet pipeline of the generator, the fuel tank is located above the generator, the outer cover of the fuel tank is provided with a first protective cover, the fuel tank is provided with an oil inlet, the first protective cover is provided with a cache cavity and an overflow channel, the cache cavity surrounds the oil inlet and is used to receive the fuel overflowing from the fuel filling port, and the overflow channel is connected to the cache cavity and extends outward to the outside of the generator.
[0005] After adopting the above technical solution, the utility model has the following advantages: First, the buffer cavity surrounds the oil inlet, which can effectively collect the fuel that may overflow during the refueling process. After the fuel overflow is collected by the buffer cavity, it is guided to the outside through the overflow channel for discharge, avoiding the fuel from dripping directly onto the generator, which will not pollute the generator and ensure the service life of the generator. It can also effectively prevent the fuel from contacting the high-temperature generator and causing fire accidents, thereby increasing the safety of the lawn mower operation.
[0006] Furthermore, both sides of the overflow channel have ribs protruding relative to the surface of the first protective cover.
[0007] By adopting the above-mentioned technical solution, the rib can intercept fuel splashing, reduce the diffusion of fuel on the surface of the first protective cover, ensure that the fuel can be effectively discharged to a specific area, and effectively prevent fuel from dripping onto the generator.
[0008] Furthermore, the bottom surface of the cache cavity is higher than the bottom surface of the overflow channel.
[0009] With the above-mentioned technical solution, since the bottom surface of the cache cavity is higher than the bottom surface of the overflow channel, this means that the fuel will naturally flow to the overflow channel under the action of gravity and eventually flow out to the outside, which can reduce the time that the fuel accumulates in the cache cavity and speed up the discharge of the fuel.
[0010] Furthermore, the top of the cache cavity is higher than the top of the oil inlet.
[0011] By adopting the above-mentioned technical solution, the side wall of the buffer cavity effectively blocks the fuel overflowing from the fuel inlet, thereby increasing the fuel accommodating capacity of the buffer cavity.
[0012] Furthermore, the surface of the first protective cover is provided with a peripheral edge surrounding the cache cavity, and the peripheral edge protrudes from the surface of the first protective cover.
[0013] By adopting the above-mentioned technical solution, the surrounding edge serves to intercept fuel splashing and also increases the fuel accommodating capacity of the buffer cavity.
[0014] Furthermore, the side wall of the cache cavity is provided with an oil drain port for fuel to flow out of the cache cavity, the cache cavity is connected to the overflow channel through the oil drain port, and the mouth area of the oil drain port is smaller than the mouth area of the overflow channel.
[0015] By adopting the above-mentioned technical solution, the mouth area of the oil drain port is smaller than the mouth area of the overflow channel, so that the fuel can transition smoothly and be discharged quickly when passing through, reducing turbulence and reducing the accumulation of fuel between the oil drain port and the overflow channel.
[0016] Furthermore, the inlet of the overflow channel is communicated with the cache cavity, and the inlet of the overflow channel to the outlet of the overflow channel are arranged from top to bottom along the surface of the first protective cover.
[0017] With the above technical solution, since the overflow channel extends from top to bottom, gravity can be used to allow the fuel to flow naturally downward, helping to reduce the accumulation of fuel in the overflow channel.
[0018] Furthermore, the overflow channel includes a first inclined section, a vertical section and a second inclined section. The first inclined section is connected to the cache cavity, the second inclined section is used to discharge fuel to the outside, and the vertical section is used to connect the first inclined section and the second inclined section.
[0019] By adopting the above-mentioned technical solution, the design of the first inclined section can effectively guide the flow of fuel, reduce the retention of fuel in the overflow channel, and make the fuel fit more closely to the surface of the overflow channel, reducing the splashing of fuel in the overflow channel. Secondly, the vertical section is set to have less resistance to the fuel, which can quickly increase the speed of fuel flow, and the design of the second inclined section can better control the flow direction of the fuel, ensuring that the fuel can be discharged in an orderly manner without splashing everywhere or causing unnecessary waste.
[0020] Furthermore, the second inclined section projects outwards to extend to the outside of the generator.
[0021] By adopting the above-mentioned technical solution, the second inclined section extends outward to the outside of the generator, which can ensure that the fuel can be led away from the generator instead of dripping onto the engine.
[0022] Furthermore, the vehicle frame also includes a second protective cover arranged on the outside of the generator.
[0023] By adopting the above-mentioned technical solution, the second protective cover forms a physical barrier for the generator, which can effectively prevent the fuel from contacting the generator. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The present invention will be further described below with reference to the accompanying drawings:
[0025] Figure 1 This is a schematic diagram of the range-extended lawn mower of the present invention;
[0026] Figure 2 This is a schematic diagram of the range-extended lawn mower of the present invention from another perspective;
[0027] Figure 3 This is a partial structural diagram of the first protective cover in the present utility model;
[0028] Figure 4 This is a schematic diagram of the range-extended lawn mower of the present invention from another perspective;
[0029] Figure 5 This is a partial structural diagram of the range-extended lawn mower of the present invention;
[0030] Figure 6 This is an exploded view of the partial structure of the range-extended lawn mower of the present invention;
[0031] In the figure, 10, frame; 11, battery; 12, generator; 13, fuel tank; 131, fuel tank cover; 14, first protective cover; 141, cache chamber; 1411, oil drain port; 1412, opening; 1413, surround; 142, overflow channel; 1421, first inclined section; 1422, vertical section; 1423, second inclined section; 1424, retaining edge; 15, second protective cover. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.
[0033] The terms "first," "second," "third," "fourth," and so on (if any) in the description and claims of the present invention and the drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.
[0034] It should be understood that in various embodiments of the present invention, the size of the serial numbers of the processes does not mean the order of execution. The order of execution of the processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
[0035] It should be understood that in the present invention, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.
[0036] It should be understood that in the present invention, "multiple" refers to two or more. "And / or" is only a description of the association relationship of related objects, indicating that three relationships can exist. For example, X and / or Y can represent three situations: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the previous and next related objects are in an "or" relationship. "Including X, Y and Z", "Including X, Y, Z" means that X, Y, and Z are all included, "Including X, Y or Z" means that one of X, Y, and Z is included, and "Including X, Y and / or Z" means that any one, any two, or any three of X, Y, and Z are included.
[0037] The following specific embodiments are used to describe the technical solution of the present invention in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.
[0038] like Figures 1 to 6 As shown, the present invention provides a range-extended lawn mower, comprising a frame 10, a cutting device, a battery 11, a generator 12, and a fuel tank 13. The battery 11 provides energy for the cutting device, the generator 12 is electrically connected to the battery 11, and the fuel tank 13 is connected to the fuel inlet of the generator 12. By adding the generator 12 and the fuel tank 13, the operating time of the lawn mower can be effectively extended. When the battery 11 is low on power, the generator 12 can generate electricity using fuel to continue charging the battery 11 or directly power the cutting device, thus avoiding work interruptions caused by frequent charging.
[0039] Among them, the fuel tank 13 is located above the generator 12 and can use gravity to supply oil. The outer cover of the fuel tank 13 is provided with a first protective cover 14. The fuel tank 13 is provided with an oil inlet. The first protective cover 14 is provided with a cache chamber 141 and an overflow channel 142. The cache chamber 141 surrounds the oil inlet and is used to receive the fuel overflowing from the refueling port. The overflow channel 142 is connected to the cache chamber 141 and extends outward to the outside of the generator 12, so that the overflowing fuel is collected by the cache chamber 141 and then guided to the outside through the overflow channel 142 to avoid fuel dripping directly onto the generator 12, which will not pollute the generator 12 and ensure the service life of the generator 12. It can also effectively prevent the fuel from contacting the high-temperature generator 12 and causing fire accidents, thereby increasing the safety of the lawn mower operation.
[0040] It should be noted that the fuel inlet is equipped with a fuel tank cap 131. This cap closes the fuel inlet to prevent the fuel in the fuel tank 13 from vibrating and spilling out of the inlet. The cap 131 is located within the storage chamber and must be opened before refueling. Furthermore, a liquid collection container can be placed below the overflow channel 142 to ensure smooth fuel flow into the container, preventing contamination of the lawn mower and the environment. The bottom wall of the buffer chamber 141 is provided with an opening 1412, through which the fuel inlet extends.
[0041] The top of the buffer cavity 141 is higher than the top of the oil inlet, and the side wall of the buffer cavity 141 can effectively block the fuel overflowing from the oil inlet, thereby increasing the fuel accommodating capacity of the buffer cavity 141.
[0042] Specifically, the surface of the first protective cover 14 is provided with a border 1413 surrounding the cache cavity 141. The border 1413 protrudes from the surface of the first protective cover 14, and the top of the border 1413 is higher than the oil inlet. The border 1413 serves to intercept fuel splashes and also increases the ability of the cache cavity 141 to accommodate fuel.
[0043] In order to quickly discharge the fuel in the cache chamber 141 and thus ensure that the cache chamber 141 has a certain capacity to accommodate fuel, the bottom surface of the cache chamber 141 is higher than the bottom surface of the overflow channel 142, which means that the fuel will naturally flow to the overflow channel 142 under the action of gravity and eventually flow out to the outside, which can reduce the time that the fuel accumulates in the cache chamber 141 and speed up the discharge of the fuel.
[0044] Furthermore, the bottom surface of the buffer cavity 141 is inclined downward toward the overflow channel 142 , further causing the fuel to flow toward the overflow channel 142 under the action of gravity.
[0045] Specifically, the side wall of the cache cavity 141 is provided with an oil drain port 1411 for the fuel to flow out of the cache cavity 141. The cache cavity 141 is connected to the overflow channel 142 through the oil drain port 1411. The mouth area of the oil drain port 1411 is smaller than the mouth area of the overflow channel 142, so that the fuel can smoothly transition and be discharged quickly when passing through, reducing turbulence and reducing the accumulation of fuel between the oil drain port 1411 and the overflow channel 142.
[0046] In order to further quickly discharge the fuel in the overflow channel 142, the inlet of the overflow channel 142 is connected to the cache chamber 141, and the inlet of the overflow channel 142 to the outlet of the overflow channel 142 are arranged from top to bottom along the surface of the first protective cover 14, so that gravity can be used to make the fuel flow downward naturally, which helps to reduce the accumulation of fuel in the overflow channel 142.
[0047] To prevent fuel from splashing and contacting the generator 12 during discharge, overflow channel 142 has ribs 1424 on both sides that protrude from the surface of first protective cover 14. Ribs 1424 better guide overflowing fuel along a predetermined path and intercept fuel splashes, reducing fuel diffusion across the surface of first protective cover 14. This ensures that fuel is effectively discharged to a specific area and prevents it from dripping onto the generator 12.
[0048] Specifically, the overflow channel 142 includes a first inclined section 1421, a vertical section 1422, and a second inclined section 1423. The first inclined section 1421 is connected to the buffer chamber 141. The first inclined section 1421 can effectively guide the flow of fuel, reduce the retention of fuel in the overflow channel 142, and make the fuel fit more closely to the surface of the overflow channel 142, reducing the splashing of fuel in the overflow channel 142. The second inclined section 1423 is used to discharge fuel to the outside, which can better control the flow direction of the fuel and ensure that the fuel can be discharged in an orderly manner without splashing around or causing unnecessary waste. The vertical section 1422 is used to connect the first inclined section 1421 and the second inclined section 1423, which has less resistance to the fuel and can quickly increase the speed of fuel flow.
[0049] The second inclined section 1423 extends outward to the exterior of the generator 12, ensuring that fuel is directed away from the generator 12 rather than dripping onto the engine. Furthermore, the height of the rib 1424 of the second inclined section 1423 relative to the surface of the first protective cover 14 is greater than the height of the rib 1424 of the vertical section 1422 relative to the surface of the first protective cover 14, effectively intercepting fuel splashes accelerated by the vertical section 1422.
[0050] To further protect the generator 12, the frame 10 further includes a second protective cover 15 disposed outside the generator 12. The second protective cover 15 forms a physical barrier to the generator 12, effectively preventing fuel from contacting the generator 12. The second inclined section 1423 extends outside the second protective cover 15, effectively preventing fuel from contacting the second protective cover 15, keeping the lawn mower cleaner.
[0051] In order to further protect other parts of the lawn mower, the battery 11 is located in front of the generator 12, and the overflow channel 142 is located on the side away from the battery 11, thereby reducing the possibility of fuel contacting the battery 11.
[0052] In addition to the above-mentioned preferred embodiments, the present invention has other implementation methods. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.
Claims
1. An extended-range lawn mower, comprising a frame (10), a cutting device, a battery (11), a generator (12) and a fuel tank (13), wherein the battery (11) supplies energy to the cutting device, the generator (12) is electrically connected to the battery (11), and the fuel tank (13) is connected to an oil inlet pipeline of the generator (12), characterized in that: The fuel tank (13) is located above the generator (12); a first protective cover (14) is provided on the outside of the fuel tank (13); the fuel tank (13) is provided with an oil inlet; the first protective cover (14) is provided with a buffer cavity (141) and an overflow channel (142); the buffer cavity (141) surrounds the oil inlet and is used to receive fuel overflowing from the fuel filling port; the overflow channel (142) is communicated with the buffer cavity (141) and extends outward to the outside of the generator (12).
2. The extended-range lawn mower according to claim 1, characterized in that: Both sides of the overflow channel (142) are provided with retaining edges (1424) protruding relative to the surface of the first protective cover (14).
3. The range-extended lawn mower according to claim 1, characterized in that: The bottom surface of the buffer cavity (141) is higher than the bottom surface of the overflow channel (142).
4. The extended-range lawn mower according to claim 1, characterized in that: The top of the buffer cavity (141) is higher than the top of the oil inlet.
5. The range-extended lawn mower according to claim 1, characterized in that: The surface of the first protective cover (14) is provided with a surrounding edge (1413) surrounding the cache cavity (141), and the surrounding edge (1413) protrudes from the surface of the first protective cover (14).
6. The range-extended lawn mower according to claim 1, characterized in that: The side wall of the cache cavity (141) is provided with an oil discharge port (1411) for fuel to flow out of the cache cavity (141); the cache cavity (141) is connected to the overflow channel (142) via the oil discharge port (1411); and the opening area of the oil discharge port (1411) is smaller than the opening area of the overflow channel (142).
7. The range-extended lawn mower according to claim 1, characterized in that: The inlet of the overflow channel (142) is communicated with the cache chamber (141), and the inlet of the overflow channel (142) to the outlet of the overflow channel (142) are arranged from top to bottom along the surface of the first protective cover (14).
8. The range-extended lawn mower according to any one of claims 1 to 7, characterized in that: The overflow channel (142) includes a first inclined section (1421), a vertical section (1422) and a second inclined section (1423); the first inclined section (1421) is connected to the buffer chamber (141); the second inclined section (1423) is used to discharge fuel to the outside; and the vertical section (1422) is used to connect the first inclined section (1421) and the second inclined section (1423).
9. The range-extended lawn mower according to claim 8, characterized in that: The second inclined section (1423) is protruded outward to extend to the outside of the generator (12).
10. The range-extended lawn mower according to claim 1, characterized in that: The vehicle frame (10) further comprises a second protective cover (15) which is arranged outside the generator (12).