A lawn mower with anti-wrap serrations

Abstract

The utility model discloses a lawn machine with anti -winding sawtooth, include: lawn machine shell, fixedly installed with drive motor in the lawn machine shell, the output shaft of drive motor is rotated and is fixedly installed with cutting piece in the comb guide groove of passing through the shape shell rotation in the comb guide groove, and the comb guide groove is set up in the lower extreme of lawn machine shell, and the shape shell is fixedly installed in the center part in the comb guide groove, and the anti -winding mechanism is rotatably installed in the shape shell. The application passes through the design of anti -winding mechanism, makes it through the cross cutters of relative rotation and cutting piece, can cut off the grass stem of trying to wind rapidly, keeps cutting part from being stuck, can keep the equipment continuous operation, reduces the shutdown maintenance time.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, specifically a lawnmower with anti-tangling saw teeth. Background Technology

[0002] A lawnmower, also known as a lawn mower, is a mechanical device used for cutting grass and for landscaping and environmental protection. Currently, most lawnmowers have four wheels, including front left and right wheels and rear left and right wheels, which are used to trim lawns and complete the mowing work.

[0003] For example, the national authorized patent announcement number CN216314019U discloses a novel hand-push lawnmower, including a lawnmower body. Wheels are fixedly connected to the bottom of the lawnmower body, a collection trough is fixedly connected to one side of the lawnmower body, and auxiliary wheels are fixedly connected to the bottom of the collection trough. A pipe is fixedly installed on the top of the lawnmower body, an oil tank is installed on one side of the pipe, a heat dissipation cover is installed near the pipe and located on top of the pipe, a drive motor is installed on one side of the heat dissipation cover, and a pull rod is installed near the drive motor. The pull rod is bolted to the top of the lawnmower body via a rotating bolt. This novel hand-push lawnmower has a simple structure, novel design, and high efficiency.

[0004] However, the aforementioned new type of push lawnmower has obvious technical shortcomings due to the lack of an effective anti-grass stem entanglement design. When the blades are cutting grass stems at high speed, the soft and slender grass stems are very easy to quickly wrap around the blades and transmission components under the action of centrifugal force and mechanical friction, forming a tight entanglement layer. This entanglement phenomenon not only significantly increases the rotational resistance of the blades, leading to a sharp drop in cutting efficiency and an increase in energy consumption, but also causes the drive motor to be in an overloaded state for a long time, accelerating the wear and aging of the motor and transmission system, and greatly shortening the service life of the equipment. Utility Model Content

[0005] The purpose of this utility model is to provide a lawnmower with anti-tangling saw teeth to solve the problems mentioned in the background art, such as the blades and transmission components that are easy to entangle with grass stems, resulting in reduced cutting efficiency, increased energy consumption, motor overload, severe equipment wear, shortened service life, frequent shutdowns for cleaning affecting the continuity of operation and posing safety hazards.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A lawnmower with anti-tangling serrations includes: a lawnmower housing, a drive motor fixedly installed inside the lawnmower housing, the output shaft of the drive motor rotating through a triangular protective shell and rotating within a combing groove, with a cutting blade fixedly installed at its end, the combing groove being opened at the lower end of the lawnmower housing, and the triangular protective shell being fixedly installed in the center of the combing groove, and an anti-tangling mechanism being rotatably installed inside the triangular protective shell.

[0008] Preferably, the comb groove is U-shaped, and both ends of the cutting blade are raised, so that during lawn mowing, the comb groove can push the grass roots into the storage compartment. The storage compartment is fixedly installed at one end of the lawnmower casing and is connected to the comb groove.

[0009] Preferably, the anti-winding mechanism includes a limiting plate, which is rotatably installed inside the connecting plate, while the connecting plate is fixedly installed inside the shaped protective shell. A connecting post is fixedly installed on the lower surface of the limiting plate, and the connecting post passes through the limiting plate and the shaped protective shell and is located in the comb guide groove. A cross cutter is fixedly installed on the outer surface of the connecting post that passes through.

[0010] Preferably, the lower surface of the cross cutter is in contact with the upper surface of the cutting disc.

[0011] Preferably, a small gear is fixedly installed on the outer surface of the connecting column. The small gear can mesh with a large gear, while the large gear is fixedly installed on the outer surface of the output shaft of the drive motor, so that the meshed and rotating small gear can drive the cross cutter and the cutting blade to rotate relative to each other.

[0012] Preferably, both the pinion and the gear rotate within the protective housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the design of the lawnmower's casing, storage compartment, comb guide groove, drive motor, and anti-tangle mechanism, when mowing the lawn, starting the drive motor causes the output shaft to drive the cutting blade to rotate at high speed within the comb guide groove. The two ends of the raised cutting blade cooperate with the U-shaped comb guide groove to push and store the cut grass roots into the storage compartment. At the same time, the rotation of the drive motor's output shaft will drive the anti-tangle mechanism to operate synchronously. During operation, the anti-tangle mechanism will contact the surface of the cross-shaped cutter and rotate relative to it. When the grass stem approaches the cutting blade during the cutting process and attempts to entangle, the high-speed rotating and intersecting cross-shaped cutter and the anti-tangle mechanism will create a scissor-like cutting effect. Once the grass stem contacts the cutting blade, it will be quickly cut off under the action of reverse shearing force. At the same time, the raised ends of the cutting blade, together with the centrifugal force and guiding effect generated by the U-shaped comb guide groove, will throw the cut grass stem into the storage compartment, ensuring smooth cutting operations.

[0015] 2. Through the design of large gear, small gear, connecting column, and cross cutter, after the lawnmower is started, the drive motor drives the cutting blade to rotate at high speed via the output shaft. At the same time, the large gear on the output shaft of the drive motor is also driven to rotate and meshes with the small gear to rotate relative to it. As the small gear is meshed and rotates, it rotates within the connecting plate via the limit plate and simultaneously drives the cross cutter fixed on the outer surface of the connecting column to rotate relative to it. Through the relative rotation between the cross cutter and the cutting blade, when the grass stems approach the cutting blade during the cutting process and attempt to wrap around it, the high-speed rotating and interlacing cross cutter and the cutting blade will form a scissor-like cutting effect, quickly cutting the grass stems. In addition, the close rotation of the cross cutter and the cutting blade can also scrape off the grass clippings attached to the surface, forming a self-cleaning effect, keeping the blade clean and sharp, reducing the cutting resistance caused by grass clippings, reducing the motor load, and extending the service life of the equipment. Attached Figure Description

[0016] Figure 1 This is a top view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model from a bottom view;

[0018] Figure 3 This is a schematic diagram of the overall side cross-section of this utility model;

[0019] Figure 4 This is a schematic diagram of the anti-winding mechanism of this utility model.

[0020] In the diagram: 1. Lawn sweeper housing; 101. Storage compartment; 102. Comb guide groove; 103. 8-shaped protective shell; 104. Cutting blade; 105. Drive motor; 106. Connecting disc; 2. Anti-winding mechanism; 201. Large gear; 202. Small gear; 203. Limiting disc; 204. Connecting column; 205. Cross cutter. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-3As shown, a lawnmower with anti-tangling serrations includes: a lawnmower housing 1, a drive motor 105 fixedly installed inside the lawnmower housing 1, the output shaft of the drive motor 105 rotating through an 8-shaped protective shell 103 and rotating within a comb guide groove 102, with a cutting blade 104 fixedly installed at its end, the comb guide groove 102 being opened at the lower end of the lawnmower housing 1, and the 8-shaped protective shell 103 being fixedly installed in the center of the comb guide groove 102, and an anti-tangling mechanism 2 being rotatably installed inside the 8-shaped protective shell 103.

[0023] The guide groove 102 is shaped like the number 6, and both ends of the cutting blade 104 are raised, so that the guide groove 102 can push the grass roots into the storage compartment 101 during the lawn mowing process. The storage compartment 101 is fixedly installed at one end of the lawnmower shell 1 and is connected to the guide groove 102.

[0024] Through the design of the lawnmower housing 1, storage compartment 101, comb guide groove 102, drive motor 105, and anti-tangling mechanism 2, when mowing the lawn, the output shaft of the drive motor 105 is started to drive the cutting blade 104 to rotate at high speed within the comb guide groove 102. The two ends of the raised cutting blade 104 cooperate with the L-shaped comb guide groove 102, which can push and store the cut grass roots into the storage compartment 101. At the same time, the rotation of the output shaft of the drive motor 105 will drive the anti-tangling mechanism 2 to operate synchronously. The anti-tangling mechanism 2 operates... During the process, the grass stem will adhere to the surface of the cross cutter 205 and rotate relative to it. When the grass stem approaches the cutting blade 104 during the cutting process and attempts to wrap around it, the high-speed rotating and intersecting cross cutter 205 and the anti-winding mechanism 2 will form a scissor-like cutting effect. Once the grass stem contacts the cutting blade 104, it will be quickly cut off under the action of reverse shearing force. At the same time, the two ends of the cutting blade 104 are raised, and the centrifugal force and guiding effect generated by the 6-shaped comb guide groove 102 will throw the cut grass stem to the storage bin 101 to ensure that the cutting operation is carried out smoothly.

[0025] like Figure 4 As shown, the anti-winding mechanism 2 includes a limiting plate 203, which is rotatably installed inside the connecting plate 106, while the connecting plate 106 is fixedly installed inside the 8-shaped protective shell 103. A connecting post 204 is fixedly installed on the lower surface of the limiting plate 203. The connecting post 204 passes through the limiting plate 203 and the 8-shaped protective shell 103 and is located inside the comb guide groove 102. A cross cutter 205 is fixedly installed on the outer surface of the connecting post 204 that passes through.

[0026] The lower surface of the cross cutter 205 contacts the upper surface of the cutting disc 104. A pinion 202 is fixedly mounted on the outer surface of the connecting post 204. The pinion 202 can mesh with the large gear 201, which is fixedly mounted on the outer surface of the output shaft of the drive motor 105. This allows the meshing and rotating pinion 202 to drive the cross cutter 205 and the cutting disc 104 to rotate relative to each other. Both the pinion 202 and the large gear 201 rotate within the 8-shaped protective housing 103.

[0027] Through the design of the large gear 201, small gear 202, connecting column 204, and cross cutter 205, after the lawnmower is started, the drive motor 105 can drive the cutting blade 104 to rotate at high speed through the output shaft. At the same time, the large gear 201 on the output shaft of the drive motor 105 will also be driven to rotate and mesh with the small gear 202 to rotate relative to it. While the small gear 202 is being meshed and rotating, it will rotate within the connecting plate 106 through the limiting plate 203, and at the same time drive the cross cutter 205 fixedly installed on the outer surface of the connecting column 204 to advance. The blades rotate relative to each other. Through the relative rotation between the cross-cutting blade 205 and the cutting blade 104, when the grass stems approach the cutting blade 104 during the cutting process and attempt to wrap around it, the high-speed rotating and interlacing cross-cutting blade 205 and the cutting blade 104 will form a scissor-like cutting effect, quickly cutting the grass stems. In addition, the close rotation of the cross-cutting blade 205 and the cutting blade 104 can also scrape off the grass clippings attached to the surface, forming a self-cleaning effect, keeping the blades clean and sharp, reducing the cutting resistance caused by grass clippings, reducing the motor load, and extending the service life of the equipment.

[0028] Based on the above technical solution, the working steps of this solution are summarized as follows: When mowing the lawn, the output shaft of the drive motor 105 is started to drive the cutting blade 104 to rotate at high speed in the comb groove 102. The two ends of the raised cutting blade 104 cooperate with the L-shaped comb groove 102, which can push and store the cut grass roots into the storage bin 101. At the same time, the rotation of the output shaft of the drive motor 105 will drive the large gear 201 fixedly mounted on the outer surface to rotate together, and the rotating large gear 201 can mesh with the small gear 202 and... The two blades rotate relative to each other. When the pinion 202 is engaged and rotates, it will rotate within the connecting plate 106 via the limiting plate 203. At the same time, it will drive the cross cutter 205, which is fixedly installed on the outer surface of the connecting column 204, to rotate relative to each other. Through the relative rotation between the cross cutter 205 and the cutting blade 104, when the grass stem approaches the cutting blade 104 during the cutting process and attempts to wrap around it, the high-speed rotating and interlaced cross cutter 205 and the cutting blade 104 will form a scissor-like cutting effect, quickly cutting off the grass stem and ensuring that the cutting operation is carried out smoothly.

[0029] In summary, this lawnmower with anti-tangling serrations can quickly cut grass stems that are trying to get tangled by the relatively rotating cross-cutting blade 205 and cutting disc 104, keeping the cutting parts from getting stuck, allowing the equipment to continue operating and reducing downtime for maintenance.

[0030] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lawnmower with anti-tangling saw teeth, characterized in that, include: The lawnmower housing (1) has a drive motor (105) fixedly installed inside it. The output shaft of the drive motor (105) rotates through the 8-shaped protective shell (103) and rotates inside the comb guide groove (102), and a cutting blade (104) is fixedly installed at its end. The comb guide groove (102) is opened at the lower end of the lawnmower housing (1), and the 8-shaped protective shell (103) is fixedly installed in the center of the comb guide groove (102). An anti-winding mechanism (2) is rotatably installed inside the 8-shaped protective shell (103).

2. A lawnmower with anti-tangling saw teeth according to claim 1, characterized in that: The comb groove (102) is shaped like the number 6, and both ends of the cutting blade (104) are raised, so that during the lawn mowing process, the comb groove (102) can push the grass roots into the storage compartment (101). The storage compartment (101) is fixedly installed at one end of the lawnmower casing (1) and is simultaneously connected to the comb groove (102).

3. A lawnmower with anti-tangling saw teeth according to claim 2, characterized in that: The anti-winding mechanism (2) includes a limiting plate (203), which is rotatably installed in a connecting plate (106), while the connecting plate (106) is fixedly installed in an 8-shaped protective shell (103). A connecting post (204) is fixedly installed on the lower surface of the limiting plate (203). The connecting post (204) passes through the limiting plate (203) and the 8-shaped protective shell (103) and is located in the comb guide groove (102). A cross cutter (205) is fixedly installed on the outer surface of the connecting post (204) that passes through.

4. A lawnmower with anti-tangling saw teeth according to claim 3, characterized in that: The lower surface of the cross cutter (205) is in contact with the upper surface of the cutting disc (104).

5. A lawnmower with anti-tangling saw teeth according to claim 3, characterized in that: A small gear (202) is fixedly installed on the outer surface of the connecting column (204). The small gear (202) can mesh with the large gear (201), while the large gear (201) is fixedly installed on the outer surface of the output shaft of the drive motor (105). This allows the meshed and rotating small gear (202) to drive the cross cutter (205) and the cutting blade (104) to rotate relative to each other.

6. A lawnmower with anti-tangling saw teeth according to claim 5, characterized in that: Both the small gear (202) and the large gear (201) rotate within the 8-shaped protective shell (103).

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