Mower knife sharpener

Abstract

The utility model discloses a mower knife sharpener which comprises a handheld base, a first inner groove is formed in the first side wall of the handheld base, a hob grinding head is assembled in the first inner groove, the hob grinding head comprises an assembling part and a grinding part from top to bottom, the assembling part is hinged to the interior of the first inner groove, and the grinding part is hinged to the interior of the second inner groove. The first inner groove is through in the width direction of the first end face, and the hob grinding groove can swing in a reciprocating mode in the width direction of the first end face. The grinding part protrudes out of the first end face, a hobbing cutter grinding groove with a downward opening is formed in the grinding part, the hobbing cutter grinding groove is through in the length direction of the first end face, and a hobbing cutter grinding sheet is embedded in the bottom of the hobbing cutter grinding groove; a second inner groove is formed in the second side wall of the handheld base, and a fixed cutter grinding piece is fixedly arranged in the second inner groove. The hay mower can be operated in a handheld mode, operation is easy, and daily maintenance and grinding can be conveniently conducted on a hob and a fixed cutter of the hay mower.

Description

Technical Field

[0001] This utility model belongs to the field of knife sharpener technology, specifically relating to a lawnmower knife sharpener. Background Technology

[0002] A lawnmower is a device used to trim lawns. It uses a combination of roller blades and fixed blades to cut the grass. After prolonged use, both the roller blades and fixed blades will wear down, affecting mowing efficiency and the smoothness of the lawn. Therefore, the roller blades and fixed blades need to be sanded. Currently, specialized sanding equipment is often used to sand the roller blades and fixed blades separately. However, lawnmowers are now widely used in home lawn care, and it is not possible to equip them with specialized sanding equipment. Therefore, routine sanding and maintenance of the lawnmower's roller blades and fixed blades is extremely inconvenient. Summary of the Invention

[0003] This invention addresses the problem of inconvenient daily sharpening and maintenance of the fixed blades on lawnmowers in existing technologies by providing a lawnmower blade sharpener. The objective of this invention is achieved through the following technical solution:

[0004] A lawnmower sharpener includes a handheld base. A first inner groove is formed on the first side wall of the handheld base, and a hobbing head is assembled in the first inner groove. The hobbing head includes an assembly part and a grinding part from top to bottom. The assembly part is hinged in the first inner groove, which extends through the width direction of the first end face. The hobbing grinding groove can reciprocate along the width direction of the first end face. The grinding part protrudes from the first end face and has a downward-facing hobbing grinding groove that extends through the length direction of the first end face. A hobbing grinding disc is embedded at the bottom of the hobbing grinding groove. A second inner groove is formed on the second side wall of the handheld base, and a fixed blade grinding disc is fixed in the second inner groove.

[0005] Preferably, two first inner grooves are spaced apart along the length of the first sidewall, and a hobbing head is rotatably mounted in each first inner groove. The two hobbing heads are aligned and each hobbing head is equipped with a hobbing disc, and the grinding surfaces of the two hobbing discs are flush.

[0006] Preferably, the second inner groove is inclined relative to the second sidewall, and the second inner groove extends through the width of the second sidewall.

[0007] Preferably, there are two fixed grinding discs, namely a first fixed grinding disc and a second fixed grinding disc. The first fixed grinding disc is fixed to the bottom of the second inner groove, and the second fixed grinding disc is fixed to the wall of the second inner groove. The grinding surface of the first fixed grinding disc is perpendicular to the grinding surface of the second fixed grinding disc.

[0008] Preferably, the handheld base further includes a front wall, a rear wall, a third side wall, and a fourth side wall, with the first side wall being perpendicular to the second side wall, and a clearance inclined wall provided at the connection between the second side wall and the third side wall. The second inner groove is located close to the clearance inclined wall, and the two have the same inclination angle.

[0009] Preferably, the first sidewall, the second sidewall, the third sidewall, the fourth sidewall, and the clearance inclined wall surround the periphery of the front wall and the rear wall, and the two first inner grooves are respectively located close to the second sidewall and the fourth sidewall.

[0010] Preferably, the front wall and the rear wall are provided with aligned longitudinal grip grooves, the longitudinal grip grooves are located near the fourth side wall, and the starting end of the longitudinal grip groove is located on the first side wall, and the ending end of the longitudinal grip groove is located on the third side wall.

[0011] Preferably, the front wall and the rear wall are provided with aligned transverse grip grooves, the transverse grip grooves are located above the first inner groove, and the starting end of the transverse grip grooves is located on the second side wall, and the ending end of the transverse grip grooves is connected to the longitudinal grip grooves.

[0012] Preferably, both the longitudinal grip groove and the transverse grip groove are arc-shaped grooves to accommodate the operator's fingers.

[0013] Compared with the prior art, this utility model has the following technical effects: the entire sharpener is compact, can be operated by hand, and is easy to operate, making it convenient for daily maintenance and sharpening of the roller blades and stationary blades of a lawnmower; the sharpener has separate roller blade grinding discs and stationary blade grinding discs, which can be used to sharpen the roller blades and stationary blades in a targeted manner, resulting in good sharpening effect; the roller blade grinding head can swing freely to adapt to the torsional direction of the roller blade, and the two roller blade grinding heads work together to achieve higher sharpening efficiency; the longitudinal grip groove on the hand base is used for timed sharpening, and the transverse groove is used when sharpening the roller blade, making the sharpening operation more comfortable and safe. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is another structural schematic diagram of the present invention;

[0016] The markings in the figure are: Handle base 10; First side wall 11; First inner groove 111; Second side wall 12; Second inner groove 121; Leaving inclined wall 13; Third side wall 14; Fourth side wall 15; Front wall 16; Rear wall 17; Transverse grip groove 191; Longitudinal grip groove 192; Hob grinding head 20; Assembly part 21; Grinding part 22; Hob grinding groove 221; Hob grinding disc 30; First fixed tool grinding disc 41; Second fixed tool grinding disc 42. Detailed Implementation

[0017] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0018] See Figures 1-2 This utility model discloses a lawnmower sharpener, which includes a handheld base 10. A first inner groove 111 is formed on the first side wall 11 of the handheld base 10. A hobbing head 20 is assembled in the first inner groove 111. The hobbing head 20 includes an assembly part 21 and a grinding part 22 from top to bottom. The assembly part 21 is hinged in the first inner groove 111. The first inner groove 111 extends through the width direction of the first end face. The hobbing grinding groove 221 can swing back and forth along the width direction of the first end face to adapt to the torsional direction of the hobbing head and facilitate grinding. The grinding part 22 protrudes from the first end face and has a downward-facing hobbing grinding groove 221. The hobbing grinding groove 221 extends through the length direction of the first end face, and a hobbing grinding disc 30 is embedded at the bottom of the hobbing grinding groove 221.

[0019] To improve grinding efficiency, two first inner grooves 111 are spaced apart along the length of the first sidewall 11. Each first inner groove 111 is rotatably fitted with a hobbing head 20. The two hobbing heads 20 are aligned and each hobbing head 20 is fitted with a hobbing disc 30. The grinding surfaces of the two hobbing discs 30 are flush.

[0020] A second inner groove 121 is provided on the second side wall 12 of the handheld base 10, and a fixed blade grinding disc is fixedly installed in the second inner groove 121. The entire blade sharpener is compact, can be operated by hand, and is easy to operate, making it convenient for daily maintenance and sharpening of the roller blades and fixed blades of the lawnmower; the sharpener has a roller blade grinding disc 30 and a fixed blade grinding disc, which can be used to sharpen the roller blades and fixed blades in a targeted manner, and the sharpening effect is good.

[0021] The second inner groove 121 is inclined relative to the second side wall 12 and the second inner groove 121 extends through the width direction of the second side wall 12; there are two fixed grinding discs, namely a first fixed grinding disc 41 and a second fixed grinding disc 42. The first fixed grinding disc 41 is fixed to the bottom of the groove of the second inner groove 121, and the second fixed grinding disc 42 is fixed to the groove wall of the second inner groove 121. The grinding surface of the first fixed grinding disc 41 is perpendicular to the grinding surface of the second fixed grinding disc 42. The two fixed grinding discs grind the two vertical surfaces of the fixed blade respectively.

[0022] The handheld base 10 also includes a front wall 16, a rear wall 17, a third side wall 14, and a fourth side wall 15. The first side wall 11 is perpendicular to the second side wall 12. A clearance slope 13 is provided at the junction of the second side wall 12 and the third side wall 14. The second inner groove 121 is located close to the clearance slope 13, and the two are inclined at the same angle. The second inner groove 121 is inclined and cooperates with the clearance slope to facilitate grinding of the fixed tool and make the operation more convenient. The first side wall 11, the second side wall 12, the third side wall 14, the fourth side wall 15, and the clearance slope 13 surround the outer periphery of the front wall 16 and the rear wall 17. The two first inner grooves 111 are located close to the second side wall 12 and the fourth side wall 15, respectively.

[0023] To facilitate grinding operations, the front wall 16 and rear wall 17 are provided with aligned longitudinal grip grooves 192. The longitudinal grip grooves 192 are located near the fourth side wall 15, with the starting end of the longitudinal grip grooves 192 located on the first side wall 11 and the ending end of the longitudinal grip grooves 192 located on the third side wall 14. The front wall 16 and rear wall 17 are provided with aligned transverse grip grooves 191. The transverse grip grooves 191 are located above the first inner groove 111, with the starting end of the transverse grip grooves 191 located on the second side wall 12 and the ending end of the transverse grip grooves 191 connecting with the longitudinal grip grooves 192. Both the longitudinal grip grooves 192 and the transverse grip grooves 191 are arc-shaped grooves used to accommodate the operator's fingers. The longitudinal grip grooves 192 on the handheld base 10 are used during grinding timing, and the transverse grip grooves are used when grinding the hob, making the grinding operation more comfortable and safe.

[0024] It should be understood that in the claims and description of this utility model, all instances of "comprising..." should be understood as having an open-ended meaning, that is, equivalent to "at least comprising...", and should not be understood as having a closed-ended meaning, that is, its meaning should not be understood as "only comprising...". The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0025] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should be included within the protection scope of this utility model.

Claims

1. A lawnmower blade sharpener, characterized in that, The device includes a handheld base. A first inner groove is formed on the first side wall of the handheld base. A hobbing head is assembled in the first inner groove. The hobbing head includes an assembly part and a grinding part from top to bottom. The assembly part is hinged in the first inner groove. The first inner groove extends through the width direction of the first end face. The hobbing grinding groove can reciprocate along the width direction of the first end face. The grinding part protrudes from the first end face and has a downward-facing hobbing grinding groove. The hobbing grinding groove extends through the length direction of the first end face. A hobbing grinding disc is embedded at the bottom of the hobbing grinding groove. A second inner groove is formed on the second side wall of the handheld base. A fixed grinding disc is fixed in the second inner groove.

2. The lawnmower blade sharpener according to claim 1, characterized in that, Two first inner grooves are spaced apart along the length of the first sidewall. A hobbing head is rotatably mounted in each first inner groove. The two hobbing heads are aligned and each hobbing head is equipped with a hobbing disc. The grinding surfaces of the two hobbing discs are flush.

3. A lawnmower blade sharpener according to claim 1, characterized in that, The second inner groove is inclined relative to the second sidewall, and the second inner groove extends through the width of the second sidewall.

4. A lawnmower blade sharpener according to claim 3, characterized in that, The fixed grinding disc is provided in two parts, namely a first fixed grinding disc and a second fixed grinding disc. The first fixed grinding disc is fixed to the bottom of the second inner groove, and the second fixed grinding disc is fixed to the wall of the second inner groove. The grinding surface of the first fixed grinding disc is perpendicular to the grinding surface of the second fixed grinding disc.

5. A lawnmower blade sharpener according to claim 2, characterized in that, The handheld base also includes a front wall, a rear wall, a third side wall, and a fourth side wall. The first side wall is perpendicular to the second side wall. The connection between the second side wall and the third side wall is provided with a clearance inclined wall. The second inner groove is located close to the clearance inclined wall, and the two have the same inclination angle.

6. A lawnmower blade sharpener according to claim 5, characterized in that, The first sidewall, the second sidewall, the third sidewall, the fourth sidewall, and the clearance inclined wall surround the periphery of the front wall and the rear wall, and the two first inner grooves are respectively located near the second sidewall and the fourth sidewall.

7. A lawnmower blade sharpener according to claim 5 or 6, characterized in that, The front and rear walls are provided with aligned longitudinal grip grooves. The longitudinal grip grooves are located near the fourth side wall, with the starting end of the longitudinal grip groove located on the first side wall and the ending end of the longitudinal grip groove located on the third side wall.

8. A lawnmower blade sharpener according to claim 7, characterized in that, The front and rear walls are provided with aligned transverse grip grooves. The transverse grip grooves are located above the first inner groove, and the starting end of the transverse grip grooves is located on the second side wall. The ending end of the transverse grip grooves is connected to the longitudinal grip grooves.

9. A lawnmower blade sharpener according to claim 8, characterized in that, Both the longitudinal and transverse grip grooves are arc-shaped grooves designed to accommodate the operator's fingers.

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