A new type of grass trimmer with anti-winding

Abstract

The utility model discloses a novel grass beater of anti -winding includes support casing, outer sleeve and shelter cover, support casing, outer sleeve and shelter cover are fixedly connected from top to bottom sequence, still include: inner tube body, rotate and connect in the bottom end inner wall of support casing, and the bottom end outer wall of inner tube body is fixedly connected with the center support, and the outer periphery equidistance fixed connection of center support has a plurality of blades no.

Description

Technical Field

[0001] This utility model relates to the field of grass trimmer technology, and in particular to a novel grass trimmer that prevents tangling. Background Technology

[0002] A lawnmower is a common landscaping tool, mainly used for trimming lawns. It cuts the lawn by rotating the mowing head via a drive mechanism. However, in actual operation, grass can easily get tangled around the rotating shaft of the drive mechanism, increasing the drive load and causing the blades to jam.

[0003] CN217694375 U discloses a novel high-efficiency grass cutter with anti-tangling technology, which can avoid the decrease in speed and jamming caused by weeds tangling, thereby improving the overall efficiency of the grass cutter. However, when the shaft drives the anti-tangling blades to rotate, weeds may also become tangled on the shaft, directly affecting the normal operation of the anti-tangling blades. Utility Model Content

[0004] This utility model discloses a novel anti-tangling grass cutter, which aims to solve the technical problem that when the shaft drives the anti-tangling blade to rotate, weeds may also get tangled on the shaft, directly affecting the normal operation of the anti-tangling blade.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A novel anti-tangling lawn mower includes a support shell, an outer tube, and a shield, which are sequentially and fixedly connected from top to bottom. It also includes: an inner tube rotatably connected to the inner wall of the bottom end of the support shell; a central support fixedly connected to the outer wall of the bottom end of the inner tube; multiple blades fixedly connected at equal intervals around the outer periphery of the central support; and an inclined surface on the outer wall of the top end of the central support; an anti-tangling mechanism disposed within the support shell and the outer tube; and a sensing mechanism disposed on the inner wall of the bottom end of the inner tube.

[0007] The anti-winding mechanism includes: multiple blades 2, which are equidistantly and movably attached to the outer circumference of the inner tube body, and the inner walls of the multiple blades 2 are respectively movably attached to the inclined surface, and the multiple blades 2 can be simultaneously moved outward.

[0008] A support rod is fixedly connected to the top outer wall of the support housing, and a toothed ring is fixedly connected to the top circumferential outer wall of the inner tube. A gear is movably meshed on one side of the toothed ring. The gear is rotatably connected to the bottom inner wall of the support housing, and a motor is fixedly connected to the top of the gear.

[0009] The anti-winding mechanism includes: a support rod, rotatably connected to the inner wall of the top end of the inner tube, and a conical support block fixedly connected to the outer wall of the bottom end of the support rod; a top plate, fixedly connected to the outer wall of the top end of the support rod, and an air rod fixedly connected to the outer wall of the bottom end of the top plate, the air rod being fixedly connected to the inner wall of the bottom end of the support shell.

[0010] The anti-winding mechanism further includes: multiple square through slots, equidistantly arranged through the inner circumference of the inner tube; multiple slides, respectively fixedly connected to the inner walls of multiple blades, and the multiple slides are respectively movably connected to the multiple square through slots; and multiple springs, respectively fixedly connected between each slide and the inner wall of the inner tube.

[0011] The anti-winding mechanism further includes: multiple perforations, equidistantly arranged through the inner circumference of the inner tube; and multiple limiting rods, respectively fixedly connected to the inner walls of multiple blades, with the multiple limiting rods correspondingly and movably inserted into the multiple perforations.

[0012] The anti-winding mechanism is designed to prevent tangling by using multiple blades attached to the outer wall of the inner tube and the central support. Since the tangling of weeds is mostly concentrated outside the shaft, the blades can cut the tangled weeds to break the integrity of the tangling. At the same time, the multiple blades can move outward synchronously to cut off the unbroken weeds, further ensuring the anti-winding effect.

[0013] In a preferred embodiment, the sensing mechanism includes: a mounting groove disposed on the inner wall of the bottom end of the inner tube; a pressure sensing plate movably connected to the mounting groove, and a spring is fixedly connected between the outer wall of the bottom end of the pressure sensing plate and the inner wall of the bottom end of the mounting groove.

[0014] With the addition of a sensing mechanism, the pressure sensing plate controls the operation of the air rod, thereby preventing the conical support block from damaging the bottom inner wall of the inner tube due to excessive extension of the air rod. In addition, the presence of spring two prevents the air rod from responding too slowly, thus avoiding excessive compression of the pressure sensing plate.

[0015] In a preferred embodiment, the anti-winding mechanism further includes: multiple L-shaped limiting frames, which are equidistantly fixed to the inner circumferential wall of the inner tube; and multiple square grooves, which are respectively disposed on one side of the inner wall of the multiple slides, and the L-shaped limiting frames are respectively movably abutting against the inner wall of the multiple square grooves.

[0016] By incorporating square grooves and L-shaped limit brackets, it is ensured that the inner walls of multiple carriages will not contact the outer wall of the conical support block when the conical support block is at its highest position, thereby further ensuring the service life of the conical support block and carriages.

[0017] As described above, a novel anti-tangling grass cutter includes a supporting shell, an outer tube, and a shield. The supporting shell, outer tube, and shield are sequentially and fixedly connected from top to bottom. It also includes: an inner tube rotatably connected to the inner wall of the bottom end of the supporting shell; a central support fixedly connected to the outer wall of the bottom end of the inner tube; and multiple blades fixedly connected at equal intervals around the outer circumference of the central support; the outer wall of the top end of the central support has an inclined surface; an anti-tangling mechanism disposed within the supporting shell and the outer tube; and a sensing mechanism disposed on the inner wall of the bottom end of the inner tube. The anti-tangling mechanism includes: multiple blades equidistantly and movably attached to the outer circumference of the inner tube, with the inner walls of each blade movably attached to the inclined surface; and the multiple blades movably and simultaneously able to move outwards. This novel anti-tangling grass cutter provides an effective anti-tangling effect for weeds, effectively preventing tangled weeds from affecting the cutting performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a novel anti-tangling lawn mower proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of a novel anti-tangling lawn mower proposed in this utility model.

[0020] Figure 3 This is a disassembled schematic diagram of the internal structure of a novel anti-tangling lawn mower proposed in this utility model.

[0021] Figure 4 This is a schematic diagram showing the internal structure of the inner tube of a novel anti-tangling grass trimmer proposed in this utility model.

[0022] In the attached diagram: 1. Support rod; 2. Support housing; 3. Outer tube; 4. Shield; 5. Anti-winding mechanism; 6. Blade 1; 7. Central support; 8. Inclined surface; 9. Inner tube; 10. Gear ring; 11. Gear; 12. Motor; 13. Sensing mechanism; 501. Top plate; 502. Gas rod; 503. Support rod; 504. Conical support block; 505. Square slot; 506. Perforation; 507. Spring 1; 508. Slide; 509. Blade 2; 510. Square groove; 511. Limiting rod; 512. L-shaped limiting frame; 1301. Pressure sensing plate; 1302. Spring 2; 1303. Mounting slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] The present invention discloses a novel anti-tangling lawn mower, which is mainly used in landscaping and greening applications.

[0025] Reference Figures 1-4 A novel anti-tangling lawn mower includes a support housing 2, an outer sleeve 3, and a shield 4, which are sequentially and fixedly connected from top to bottom. It also includes:

[0026] The inner tube 9 is rotatably connected to the bottom inner wall of the supporting shell 2. The bottom outer wall of the inner tube 9 is fixedly connected to a central support 7, and multiple blades 6 are fixedly connected at equal intervals around the outer periphery of the central support 7. The top outer wall of the central support 7 is provided with an inclined surface 8.

[0027] The anti-winding mechanism 5 is installed inside the support housing 2 and the outer sleeve 3;

[0028] The sensing mechanism 13 is located on the inner wall at the bottom end of the inner tube 9;

[0029] The anti-winding mechanism 5 includes:

[0030] Multiple blades 509 are equidistantly and movably attached to the outer circumference of the inner tube 9, and the inner walls of the multiple blades 509 are respectively movably attached to the inclined surface 8. The multiple blades 509 can simultaneously move outward. The anti-winding mechanism 5 mainly achieves the anti-winding function by having multiple blades 509 attached to the outer walls of the inner tube 9 and the central support 7. Since the entanglement of weeds is mostly concentrated outside the rotating shaft, the covering of the blades 509 can cut the entangled weeds to destroy the integrity of the entanglement. At the same time, the blades 509 can move outward to cut off the unbroken weeds, further ensuring the anti-winding effect.

[0031] Reference Figure 2 In a preferred embodiment, a support rod 1 is fixedly connected to the top outer wall of the support housing 2, and a toothed ring 10 is fixedly connected to the top circumferential outer wall of the inner tube 9. A gear 11 is movably engaged on one side of the toothed ring 10. The gear 11 is rotatably connected to the bottom inner wall of the support housing 2, and a motor 12 is fixedly connected to the top of the gear 11. When the motor 12 is started, it drives the gear 11 to rotate, and through the toothed ring 10, it drives the inner tube 9 to rotate for cutting, while ensuring that the support rod 503 is not affected by the rotation.

[0032] Reference Figure 3 In a preferred embodiment, the anti-winding mechanism 5 includes:

[0033] The support rod 503 is rotatably connected to the inner wall of the top end of the inner tube 9, and a tapered support block 504 is fixedly connected to the outer wall of the bottom end of the support rod 503.

[0034] The top plate 501 is fixedly connected to the top outer wall of the support rod 503, and the bottom outer wall of the top plate 501 is fixedly connected to the air rod 502, which is fixedly connected to the bottom inner wall of the support housing 2.

[0035] Reference Figure 3 and Figure 4 In a preferred embodiment, the anti-winding mechanism 5 further includes:

[0036] Multiple square through slots 505 are equidistantly arranged through the inner circumference of the inner tube 9;

[0037] Multiple carriages 508 are fixedly connected to the inner walls of multiple blades 509, and multiple carriages 508 are movably connected to multiple square through slots 505;

[0038] Multiple springs 507 are fixedly connected between each slide 508 and the inner wall of the inner tube 9. The air rod 502 pushes the support rod 503 and the conical support block 504 to move downward. The contact position of multiple sliders 508 moves from the outer periphery of the support rod 503 to the outer periphery of the conical support block 504, thereby increasing the distance between multiple slides 508 and compressing multiple springs 507. Under the limiting action of the square through groove 505 on the slide 508, multiple blades 509 can move outward synchronously.

[0039] Reference Figure 3 and Figure 4 In a preferred embodiment, the anti-winding mechanism 5 further includes:

[0040] Multiple perforations 506 are equidistantly arranged through the inner circumference of the inner tube 9;

[0041] Multiple limiting rods 511 are fixedly connected to the inner walls of multiple blades 509, and the multiple limiting rods 511 are respectively movably inserted into multiple through holes 506.

[0042] Reference Figure 4 In a preferred embodiment, the anti-winding mechanism 5 further includes:

[0043] Multiple L-shaped limiting brackets 512 are fixedly connected at equal intervals to the inner circumference of the inner tube 9;

[0044] Multiple square grooves 510 are respectively provided on one inner wall of multiple slides 508, and L-shaped limiting brackets 512 are respectively movably abutting against the inner wall of multiple square grooves 510. By providing square grooves 510 and L-shaped limiting brackets 512, the two can limit the maximum depth of each slide 508 under the rebound force provided by spring 507, so as to ensure that the inner wall of multiple slides 508 will not contact the outer wall of tapered support block 504 when tapered support block 504 is in the highest position, thereby reducing the wear between the outer wall of tapered support block 504 and slide 508 under the rapid rotation of multiple blades 6, and further ensuring the service life of tapered support block 504 and slide 508.

[0045] Reference Figure 4 In a preferred embodiment, the sensing mechanism 13 includes:

[0046] Mounting groove 1303 is provided on the inner wall of the bottom end of the inner tube body 9;

[0047] The pressure sensing plate 1301 is movably connected within the mounting groove 1303, and a spring 1302 is fixedly connected between the outer wall of the bottom end of the pressure sensing plate 1301 and the inner wall of the bottom end of the mounting groove 1303. When the conical support block 504 falls to the bottom, it will first contact the top of the pressure sensing plate 1301. After receiving the pressure change at the top, the pressure sensing plate 1301 will control the air rod 502 to stop running, thereby preventing the air rod 502 from extending too far and causing the conical support block 504 to damage the inner wall of the bottom end of the inner tube 9. In addition, based on the setting of the spring 1302, the pressure sensing plate 1301 is given a certain descent space, thereby preventing the air rod 502 from responding too slowly and causing excessive compression of the pressure sensing plate 1301.

[0048] Working principle: The anti-tangling mechanism 5 mainly achieves the anti-tangling function by having multiple blades 509 attached to the outer wall of the inner tube 9 and the central support 7. Since the tangling of weeds is mostly concentrated outside the rotating shaft, the blades 509 can cut the tangled weeds to break the integrity of the tangling. At the same time, the air rod 502 pushes the support rod 503 and the conical support block 504 to move down, and the contact position of multiple sliders 508 moves from the outer periphery of the support rod 503 to the outer periphery of the conical support block 504, thereby increasing the distance between the multiple slides 508 and compressing multiple springs 507. Under the limiting action of the square through groove 505 on the slides 508, the multiple blades 509 can move outward synchronously. By moving outward, the unbroken weeds can be cut, further ensuring the anti-tangling effect.

[0049] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A novel anti-tangling lawn mower, comprising a supporting shell (2), an outer sleeve (3), and a shield (4), wherein the supporting shell (2), the outer sleeve (3), and the shield (4) are sequentially and fixedly connected from top to bottom, characterized in that, Also includes: The inner tube (9) is rotatably connected to the inner wall of the bottom end of the supporting shell (2). The outer wall of the bottom end of the inner tube (9) is fixedly connected to a central support (7), and multiple blades (6) are fixedly connected at equal intervals on the outer periphery of the central support (7). The outer wall of the top end of the central support (7) is provided with an inclined surface (8). An anti-winding mechanism (5) is installed inside the support housing (2) and the outer sleeve (3); The sensing mechanism (13) is located on the inner wall of the bottom end of the inner tube (9); The anti-winding mechanism (5) includes: Multiple blades (509) are equidistantly and movably attached to the outer circumference of the inner tube (9), and the inner walls of the multiple blades (509) are respectively movably attached to the inclined surface (8), and the multiple blades (509) can be simultaneously translated outward.

2. The novel anti-tangling lawn mower according to claim 1, characterized in that, A support rod (1) is fixedly connected to the top outer wall of the support housing (2), and a toothed ring (10) is fixedly connected to the top circumferential outer wall of the inner tube (9). A gear (11) is movably meshed on one side of the toothed ring (10). The gear (11) is rotatably connected to the bottom inner wall of the support housing (2), and a motor (12) is fixedly connected to the top of the gear (11).

3. A novel anti-tangling lawn mower according to claim 1, characterized in that, The anti-winding mechanism (5) includes: The support rod (503) is rotatably connected to the inner wall of the top end of the inner tube (9), and a tapered support block (504) is fixedly connected to the outer wall of the bottom end of the support rod (503); The top plate (501) is fixedly connected to the top outer wall of the support rod (503), and the bottom outer wall of the top plate (501) is fixedly connected to the air rod (502), which is fixedly connected to the bottom inner wall of the support housing (2).

4. A novel anti-tangling lawn mower according to claim 1, characterized in that, The anti-winding mechanism (5) also includes: Multiple square through slots (505) are equidistantly arranged through the inner circumference of the inner tube (9); Multiple carriages (508) are fixedly connected to the inner walls of multiple blades (509), and multiple carriages (508) are movably connected to multiple square through slots (505); Multiple springs (507) are fixedly connected between each slide (508) and the inner wall of the inner tube (9).

5. A novel anti-tangling lawn mower according to claim 4, characterized in that, The anti-winding mechanism (5) also includes: Multiple perforations (506) are equidistantly arranged through the inner circumference of the inner tube (9); Multiple limiting rods (511) are fixedly connected to the inner walls of multiple blades (509), and the multiple limiting rods (511) are respectively movably inserted into multiple through holes (506).

6. A novel anti-tangling lawn mower according to claim 5, characterized in that, The anti-winding mechanism (5) also includes: Multiple L-shaped limit brackets (512) are fixedly connected at equal intervals to the inner circumferential inner wall of the inner tube (9); Multiple square grooves (510) are respectively provided on one side inner wall of multiple slides (508), and L-shaped limit brackets (512) are respectively movably abutting against the inner wall of multiple square grooves (510).

7. A novel anti-tangling lawn mower according to claim 1, characterized in that, The sensing mechanism (13) includes: The mounting groove (1303) is provided on the inner wall of the bottom end of the inner tube (9); A pressure sensing plate (1301) is movably connected in the mounting groove (1303), and a spring (1302) is fixedly connected between the bottom outer wall of the pressure sensing plate (1301) and the bottom inner wall of the mounting groove (1303).

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