Bottom protection structure of mower

Abstract

The utility model discloses a mowing machine bottom protection structure which comprises a machine base, a cutting knife assembly and a control system and further comprises a fixing base, a base body and a telescopic protection cover, the fixing base is connected to the machine base, a through hole is formed in the machine base, the base body penetrates through the through hole and is connected to the fixing base, the cutting knife assembly is arranged on the base body, and the cutting knife assembly is electrically connected with the control system. A protection space is formed in the telescopic protection cover, the base body and the through hole are located in the protection space, the upper end of the telescopic protection cover is connected with the machine base, and the lower end of the telescopic protection cover is connected with the lower portion of the base body. Wherein the machine base is a bearing foundation of the whole structure, and the fixing base is used for bearing the base body. The telescopic protective cover can protect the base body and the through hole, various grass clippings, sundries and water drops are prevented from entering the base body through the through hole in the mowing operation process, the cleanliness of the interior of the mowing machine is improved, and meanwhile all devices in the mowing machine are prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to a lawn mower, in particular to a bottom protection structure of the lawn mower. Background Art

[0002] A lawn mower is a machine used to trim the height of a lawn. During operation, the lawn mower moves back and forth along the lawn continuously, and cuts and trims the grass through a cutter assembly during the movement. During the mowing process, grass clippings, weeds and splashing water droplets will fly around at the bottom of the lawn mower. If these sundries enter the inside of the lawn mower through the through holes at the bottom of the lawn mower, it will cause sundries to accumulate on the inner side of the bottom of the lawn mower, which is not only difficult to clean, but also pollute the devices inside the lawn mower. Therefore, improvement is needed. Summary of the Invention

[0003] Aiming at the defects in the prior art that grass clippings, weeds and splashing water droplets are likely to enter the inside of the lawn mower through the through holes at the bottom of the lawn mower during the mowing process, resulting in the accumulation of sundries on the inner side of the bottom of the lawn mower, the utility model provides a new bottom protection structure of the lawn mower.

[0004] In order to solve the above technical problems, the utility model is realized through the following technical solutions:

[0005] The bottom protection structure of the lawn mower includes a machine base, a cutter assembly, a control system, and further includes a fixed seat, a seat body, and a telescopic protective cover. The fixed seat is connected to the machine base. There are through holes provided on the machine base. The seat body passes through the through holes. The seat body is connected to the fixed seat. The cutter assembly is arranged on the seat body. The cutter assembly is electrically connected to the control system. A protection space is formed inside the telescopic protective cover. The seat body and the through holes are located inside the protection space. The upper end of the telescopic protective cover is connected to the machine base, and the lower end of the telescopic protective cover is connected to the lower part of the seat body.

[0006] Among them, the machine base is the bearing foundation of the whole structure, and the fixed seat is used to bear the seat body. The telescopic protective cover can protect the seat body and the through holes, prevent various grass clippings, sundries and water droplets from entering the inside of the seat body through the through holes during the mowing operation, improve the cleanliness inside the lawn mower, and also protect the various devices inside the lawn mower from damage.

[0007] Preferably, in the bottom protection structure of the lawn mower described above, barbs are provided at the through holes at the bottom of the machine base. A groove is formed between the barbs and the bottom of the machine base. The upper end of the telescopic protective cover forms an upper clamping convex ring. The telescopic protective cover is clamped in the groove through the upper clamping convex ring.

[0008] Through the above structural settings, the connection between the telescopic protective cover and the machine base can be made more tight.

[0009] Preferably, for the bottom protection structure of the lawn mower described above, a seat body card slot is provided on the outer circle of the lower part of the seat body, a lower clamping convex ring is formed at the lower end of the telescopic protective cover, and the telescopic protective cover is clamped with the seat body card slot through the lower clamping convex ring.

[0010] Through the above structural arrangement, the connection between the telescopic protective cover and the lower part of the seat body can be made closer.

[0011] Preferably, for the bottom protection structure of the lawn mower described above, the cutter assembly includes a cutter drive motor, a cutter, and a cutter isolation cover. The cutter drive motor is located inside the seat body and passes through the bottom of the seat body to be connected to the cutter. The cutter drive motor is electrically connected to the control system. The cutter isolation cover is located between the seat body and the cutter, and the lower clamping convex ring of the telescopic protective cover is pressed against the seat body card slot by the cutter isolation cover.

[0012] Through the above structural arrangement, the connection between the telescopic protective cover and the lower part of the seat body can be made more stable.

[0013] Preferably, for the bottom protection structure of the lawn mower described above, the cutter isolation cover includes an upper blocking part and a side blocking part that are connected to each other. The upper blocking part presses the lower clamping convex ring of the telescopic protective cover against the seat body card slot, and arc-shaped ventilation holes are formed in an array on the side blocking part.

[0014] The upper blocking part can play a further isolation role. On the one hand, it isolates the cutter from the outside, and on the other hand, it can further isolate the through hole from the cutter, playing a good isolation role. The arc-shaped ventilation holes in the side blocking part play a role in ventilation and heat dissipation, enabling the heat, water vapor, etc. generated during the lawn mowing process to be dissipated through the arc-shaped ventilation holes, avoiding affecting the lawn mowing effect due to the accumulation of heat and water vapor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is a schematic structural diagram of the cutter assembly and the control system in the present invention;

[0017] Figure 3 is a sectional view of the present invention;

[0018] Figure 4 is an exploded view of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] The following further describes the present invention in detail in conjunction with the attached Figures 1-4 drawings and specific embodiments, but they do not limit the present invention:

[0020] The bottom protection structure of a lawn mower, including a machine base 100, a cutter assembly 200, a control system 300, further includes a fixed seat 400, a seat body 810, and a telescopic protective cover 860. The fixed seat 400 is connected to the machine base 100. A through hole 110 is provided on the machine base 100. The seat body 810 passes through the through hole 110. The seat body 810 is connected to the fixed seat 400. The cutter assembly 200 is arranged on the seat body 810. The cutter assembly 200 is electrically connected to the control system 300. A protection space 861 is formed inside the telescopic protective cover 860. The seat body 810 and the through hole 110 are located inside the protection space 861. The upper end of the telescopic protective cover 860 is connected to the machine base 100, and the lower end of the telescopic protective cover 860 is connected to the lower part of the seat body 810.

[0021] Preferably, a barb 120 is provided at the bottom of the machine base 100 at the through hole 110. A groove 130 is formed between the barb 120 and the bottom of the machine base 100. The upper end of the telescopic protective cover 860 forms an upper clamping convex ring 862. The telescopic protective cover 860 is clamped inside the groove 130 through the upper clamping convex ring 862.

[0022] Preferably, a seat body clamping groove 814 is provided on the outer circle of the lower part of the seat body 810. The lower end of the telescopic protective cover 860 forms a lower clamping convex ring 863. The telescopic protective cover 860 is clamped with the seat body clamping groove 814 through the lower clamping convex ring 863.

[0023] Preferably, the cutter assembly 200 includes a cutter drive motor 210, a cutter 220, and a cutter isolation cover 230. The cutter drive motor 210 is located inside the seat body 810 and passes through the bottom of the seat body 810 to be connected to the cutter 220. The cutter drive motor 210 is electrically connected to the control system 300. The cutter isolation cover 230 is located between the seat body 810 and the cutter 220, and the cutter isolation cover 230 presses the lower clamping convex ring 863 of the telescopic protective cover 860 against the seat body clamping groove 814.

[0024] Preferably, the cutter isolation cover 230 includes an upper blocking part 231 and a side blocking part 232 which are connected to each other. The upper blocking part 231 presses the lower clamping convex ring 863 of the telescopic protective cover 860 against the seat body clamping groove 814. Arc-shaped ventilation holes 233 are formed in an array on the side blocking part 232.

[0025] During the mowing operation, the control system 300 controls the cutter drive motor 210 to start, thereby driving the cutter 220 to rotate and mow the grass. During the mowing process, the grass clippings cut by the cutter 220 and the sundries such as weeds and water droplets lifted during the rotation of the cutter 220 are first blocked by the upper blocking portion 231 of the cutter shield 230, preventing these sundries from flying towards the bottom of the machine base 100. The wind and heat generated during the rotation and cutting of the cutter 220 can flow out from the side along the arc-shaped ventilation holes 233 on the side blocking portion 232 of the cutter shield 230, avoiding heat accumulation. During the progress and cutting of the lawn mower, with the continuous collision of grass clippings, weeds, and water droplets, some sundries will fly towards the through hole 110 at the bottom of the machine base 100. At this time, the telescopic protective cover 860 can play a protective role to prevent these sundries from entering the through hole 110. In addition, since the lawn is uneven, the entire lawn mower will shake continuously during the progress of the lawn mower, and sometimes it will shake violently up and down due to stepping on branches or stones. The mutual cooperation of the groove 130 and the upper clamping convex ring 862 and the mutual cooperation of the seat body clamping groove 814 and the lower clamping convex ring 863 can firmly fix the telescopic protective cover 860 in place, improving the stability of the telescopic protective cover 860. Moreover, the setting of the telescopic protective cover 860 can also adapt to the different height requirements of the cutter 220, with a wider applicability.

[0026] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims

1. A bottom protection structure of a lawn mower, comprising a base (100), a cutting blade assembly (200), and a control system (300), characterized in that: The invention also comprises a fixed seat (400), a seat body (810), and a telescopic protective cover (860), wherein the fixed seat (400) is connected to the machine base (100), a through hole (110) is provided on the machine base (100), the seat body (810) passes through the through hole (110), the seat body (810) is connected to the fixed seat (400), the cutting knife assembly (200) is provided on the seat body (810), the cutting knife assembly (200) is electrically connected to the control system (300), a protective space (861) is formed in the telescopic protective cover (860), the seat body (810) and the through hole (110) are located in the protective space (861), the upper end of the telescopic protective cover (860) is connected to the machine base (100), and the lower end of the telescopic protective cover (860) is connected to the lower part of the seat body (810).

2. The bottom protection structure of the lawn mower according to claim 1, characterized in that: The bottom of the machine base (100) is provided with a barb (120) at the through hole (110), a groove (130) is formed between the barb (120) and the bottom of the machine base (100), an upper clamping convex ring (862) is formed at the upper end of the telescopic protective cover (860), and the telescopic protective cover (860) is clamped in the groove (130) through the upper clamping convex ring (862).

3. The bottom protection structure of the lawn mower according to claim 1, characterized in that: The lower outer ring of the seat body (810) is provided with a seat body slot (814), and the lower end of the telescopic protective cover (860) is formed with a lower snap-fitting convex ring (863), and the telescopic protective cover (860) is snap-fitted with the seat body slot (814) via the lower snap-fitting convex ring (863).

4. The bottom protection structure of the lawn mower according to claim 3, characterized in that: The cutting knife assembly (200) comprises a cutting knife drive motor (210), a cutting knife (220), and a cutting knife isolation cover (230). The cutting knife drive motor (210) is located in the seat body (810) and passes through the bottom of the seat body (810) to be connected to the cutting knife (220). The cutting knife drive motor (210) is electrically connected to the control system (300). The cutting knife isolation cover (230) is located between the seat body (810) and the cutting knife (220), and the cutting knife isolation cover (230) presses the lower engaging protruding ring (863) of the telescopic protective cover (860) against the seat body slot (814).

5. The bottom protection structure of the lawn mower according to claim 4, characterized in that: The cutter isolation cover (230) comprises an upper stopper (231) and a side stopper (232) which are connected to each other. The upper stopper (231) presses the lower engaging protruding ring (863) of the telescopic protective cover (860) into the seat body slot (814). The side stopper (232) is provided with an array of arc-shaped ventilation holes (233).

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