Hand-push type lawn mower

Abstract

The utility model discloses a hand-push type lawn mower which comprises a lawn mower body, a cutting mechanism is arranged in the lawn mower body, the cutting mechanism comprises two blades and a blade seat used for fixing the blades, the blade seat comprises an upper seat body and a lower seat body, the upper seat body and the lower seat body are provided with mounting holes, the two blades are provided with fixing parts, the fixing parts are provided with semicircular clamping grooves, and the semicircular clamping grooves are connected with the upper seat body and the lower seat body. The upper seat body and the lower seat body are respectively provided with a profiling clamping groove, the bottom surface of the lower seat body is provided with a mounting groove corresponding to the mounting hole, the blade and the blade seat are fixed at the bottom connecting end of the driving mechanism through a hexagonal fastening nut, and a positioning mechanism for positioning the hexagonal fastening nut is arranged in the mounting groove; according to the blade of the lawn mower, due to the split type design, the blade can be independently replaced after one position is abraded, materials are saved, the positioning block abuts against the side portion of the nut under the action of the strong supporting spring, the nut is positioned and cannot rotate in the mowing process, and therefore the nut cannot loosen or fall off, mowing precision is high, and safety is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of lawn mowers, and in particular relates to a hand-push lawn mower. Background Art

[0002] A lawn mower, also known as a lawn mower, is a mechanical device for mowing grass and a greening and environmental protection device. Currently commonly used lawn mowers generally have four wheels, including front left and right wheels and rear left and right wheels, which are used to trim the lawn and complete the mowing work.

[0003] The existing lawn mower blades are generally two rotationally symmetrical pieces with an integrated design. The blades are mounted at the bottom of the connecting end of the driving component and then fixed with nuts. Since the lawn mower has large vibrations when working, the nuts are easily loosened, affecting the mowing quality of the lawn mower, and even causing the nuts to fall off, affecting safety. In addition, since the blades work at high frequencies, they are easily worn. When the blades are severely worn, since the blades are of an integral design, the entire blade needs to be replaced, wasting materials. Utility Model Content

[0004] The utility model provides a hand-push lawn mower with a split blade design. After one blade is worn, it can be replaced separately, saving materials. The positioning block is pressed against the side of the nut under the action of a strong supporting spring. During the mowing process, the nut is positioned and cannot rotate, so it cannot loosen or fall off. The mowing accuracy is high and the safety is high, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hand-push lawn mower, comprising a lawn mower body, a cutting mechanism and a driving mechanism for driving the cutting mechanism to work, a push handle being installed on the lawn mower body; the cutting mechanism comprises two blades and a blade seat for fixing the blades, the blade seat comprises an upper seat body and a lower seat body, the upper seat body and the lower seat body are respectively provided with mounting holes at the centers thereof, a connecting end passing through the mounting holes is provided at the bottom ends of the driving mechanism, the two blades are provided with fixing parts surrounding the mounting holes, the fixing parts are provided with semicircular grooves fitting the mounting holes, the upper seat body and the lower seat body are both provided with profiled grooves for engaging the tails of the blades, a mounting groove corresponding to the mounting hole is provided on the bottom surface of the lower seat body, the blades and the blade seat are fixed to the bottom connecting end of the driving mechanism by a hexagonal fastening nut, and a positioning mechanism for positioning the hexagonal fastening nut is provided in the mounting groove.

[0006] Preferably, a collecting mechanism is provided at the rear of the lawn mower body.

[0007] Preferably, the positioning mechanism includes positioning grooves opened on both sides of the installation groove, and a strong support spring and a positioning block are provided in the positioning groove. The strong support spring is located inside the positioning groove, and the positioning block is squeezed against the side of the hexagonal fastening nut by the strong support spring.

[0008] Preferably, a groove is provided on the bottom surface of the positioning block near the outer end.

[0009] Preferably, the bottom surface of the upper seat body is provided with a positioning boss extending downward, and there are two positioning bosses distributed on both sides of the bottom surface of the upper seat body, and the lower seat body is provided with two positioning grooves corresponding to the positioning bosses. After the upper seat body and the lower seat body are tightened, the bottom end of the positioning boss extends into the positioning groove, and the blade is provided with a positioning through hole corresponding to the positioning boss.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The split blade design allows for separate replacement of the blade after one part is worn, saving materials.

[0012] 2. The design of the two blades surrounding the mounting hole allows the blade to be blocked and limited by the bottom connecting end of the driving mechanism through the semicircular slot, and the blocking of the contoured slot makes the blade fixed and stable.

[0013] 3. The positioning block is pressed against the side of the nut under the action of a strong supporting spring. During the mowing process, the nut is positioned and cannot rotate, so it cannot loosen or fall off, with high mowing accuracy and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of the cutting mechanism of the utility model;

[0016] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at point A;

[0017] Figure 4 This is a bottom view structural diagram of the lower seat body, mounting groove, and positioning block of the utility model;

[0018] Figure 5 This is a schematic diagram of the top view of the blade and the lower seat of the utility model;

[0019] Figure 6 This is a schematic diagram of the blade structure of the utility model;

[0020] Figure 7 This is a schematic diagram of the structure of the lower seat body of the utility model from a top view;

[0021] Figure 8 It is a schematic diagram of the upper seat body of the utility model when viewed from above.

[0022] In the figure: 1. lawn mower body; 2. cutting mechanism; 3. driving mechanism; 4. push handle; 5. blade; 6. upper base; 7. lower base; 8. mounting hole; 9. fixing part; 10. semicircular slot; 11. contoured slot; 12. mounting slot; 13. collecting mechanism; 14. positioning slot; 15. strong support spring; 16. positioning block; 17. groove; 18. positioning boss; 19. positioning groove; 20. positioning through hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-8The utility model provides a hand-push lawn mower, including a lawn mower body 1, a cutting mechanism 2 and a driving mechanism 3 for driving the cutting mechanism 2 to work, and a push handle 4 is installed on the lawn mower body 1; the cutting mechanism 2 includes two blades 5 and a blade seat for fixing the blades 5, and the blade seat includes an upper seat body 6 and a lower seat body 7, and the upper seat body 6 and the lower seat body 7 are provided with mounting holes 8 corresponding to the centers, and the bottom end of the driving mechanism 3 is provided with a connecting end passing through the mounting hole 8, and the two blades 5 are provided with a fixing portion 9 surrounding the mounting hole 8, and the fixing portion 9 is provided with a semicircular groove 10 that fits the mounting hole 8, and the upper seat body 6 and the lower seat body 7 are both provided with a contoured groove 11 for clamping the tail of the blade 5, and the bottom surface of the lower seat body 7 is provided with a mounting groove 12 corresponding to the mounting hole 8, and the blade 5 and the blade seat are fixed to the driving mechanism by a hexagonal fastening nut 3 bottom connecting end, the installation groove 12 is provided with a positioning mechanism for positioning the hexagonal fastening nut; when in use, the driving mechanism 3 is started to drive the cutting mechanism 2 to rotate, and then the push handle 4 is pushed by hand to drive the lawn mower body 1 forward to carry out mowing. When a blade 5 is damaged, the positioning block 16 can be moved into the positioning groove 14 through the groove 17 by the external component to remove the positioning of the hexagonal fastening nut side by the positioning block 16, and then the nut is loosened and removed, and then the blade 5 and the blade seat are removed, and the damaged blade 5 can be replaced. When installing, the upper seat body 6, the blade 5, and the lower seat body 7 are set on the bottom connecting end of the driving mechanism 3, and then the positioning block 16 is moved into the positioning groove 14 through the groove 17 by the external component, the nut is tightened, and then the positioning block 16 is loosened. The positioning block 16 is pressed against the side of the nut under the action of the strong support spring 15. During the mowing process, the nut is positioned and cannot rotate, so it cannot be loosened or fall off, and the mowing accuracy is high and the safety is high.

[0025] Specifically, a collection mechanism 13 is provided at the rear of the lawn mower body 1; in this embodiment, it is convenient to collect the cut grass.

[0026] Specifically, the positioning mechanism includes positioning grooves 14 opened on both sides of the installation groove 12, and a strong support spring 15 and a positioning block 16 are provided in the positioning groove 14. The strong support spring 15 is located inside the positioning groove 14, and the positioning block 16 is pressed against the side of the hexagonal fastening nut by the strong support spring 15; in this embodiment, the positioning block 16 is pressed against the side of the nut under the action of the strong support spring 15. During the mowing process, the nut is positioned and cannot rotate, so it cannot loosen or fall off, and the mowing accuracy is high and the safety is high.

[0027] Specifically, a groove 17 is provided on the bottom surface of the positioning block 16 near the outer end. In the present embodiment, taking into account the centrifugal force during mowing and the stability of the spring squeezing the positioning block 16, the strong support spring 15 has sufficient squeezing force, which also makes it difficult for the positioning block 16 to be moved inward. The groove 17 is designed to facilitate the insertion of external components, thereby moving the positioning block 16.

[0028] Specifically, the bottom surface of the upper seat body 6 is provided with a downwardly extending positioning boss 18, and there are two positioning bosses 18, which are distributed on both sides of the bottom surface of the upper seat body 6. The lower seat body 7 is provided with two positioning grooves 19 corresponding to the positioning boss 18. After the upper seat body 6 and the lower seat body 7 are tightened, the bottom end of the positioning boss 18 extends into the positioning groove 19, and the blade 5 is provided with a positioning through hole 20 corresponding to the positioning boss 18. In this embodiment, the blade 5 is positioned by inserting the positioning boss 18 into the positioning through hole 20, thereby further enhancing the stability of the blade seat in fixing the blade.

[0029] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0030] Working principle: When in use, start the driving mechanism 3 to drive the cutting mechanism 2 to rotate, then push the push handle 4 by hand to drive the lawn mower body 1 forward to carry out mowing. When a blade 5 is damaged, the positioning block 16 can be pushed into the positioning groove 14 through the groove 17 by the external component to remove the positioning of the positioning block 16 on the side of the hexagonal fastening nut, and then the nut is loosened and removed, and then the blade 5 and the blade seat are removed, and the damaged blade 5 can be replaced. When installing, the upper seat body 6, the blade 5, and the lower seat body 7 are set on the bottom connecting end of the driving mechanism 3, and then the positioning block 16 is pushed into the positioning groove 14 through the groove 17 by the external component, the nut is tightened, and then the positioning block 16 is loosened. The positioning block 16 is pressed against the side of the nut under the action of the strong support spring 15. During the mowing process, the nut is positioned and cannot rotate, so it cannot loosen or fall off, and the mowing accuracy is high and the safety is high.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hand-push lawn mower, comprising a lawn mower body (1), characterized in that: The lawn mower body (1) is provided with a cutting mechanism (2) and a driving mechanism (3) for driving the cutting mechanism (2) to work, and the lawn mower body (1) is provided with a push handle (4); the cutting mechanism (2) comprises two blades (5) and a blade seat for fixing the blades (5), the blade seat comprises an upper seat body (6) and a lower seat body (7), the upper seat body (6) and the lower seat body (7) are provided with mounting holes (8) at the center thereof, the driving mechanism (3) is provided with a connecting end passing through the mounting hole (8) at the bottom end, and the two blades (5) are provided with a connecting end for fixing the blades (5) A fixing portion (9) is surrounded by a mounting hole (8), the fixing portion (9) is provided with a semicircular groove (10) that fits the mounting hole (8), the upper seat body (6) and the lower seat body (7) are both provided with a contoured groove (11) for engaging the tail of the blade (5), the bottom surface of the lower seat body (7) is provided with a mounting groove (12) corresponding to the mounting hole (8), the blade (5) and the blade seat are fixed to the bottom connecting end of the driving mechanism (3) by a hexagonal fastening nut, and a positioning mechanism for positioning the hexagonal fastening nut is provided in the mounting groove (12).

2. A push lawn mower according to claim 1, characterized in that: A collecting mechanism (13) is provided at the rear of the lawn mower body (1).

3. A hand-push lawn mower according to claim 1, characterized in that: The positioning mechanism comprises positioning grooves (14) provided on both sides of the installation groove (12), wherein a strong support spring (15) and a positioning block (16) are arranged in the positioning groove (14), wherein the strong support spring (15) is located inside the positioning groove (14), and the positioning block (16) is pressed against the side of the hexagonal fastening nut by the strong support spring (15).

4. A push lawn mower according to claim 3, characterized in that: A groove (17) is provided on the bottom surface of the positioning block (16) near the outer end.

5. A push lawn mower according to claim 1, characterized in that: The bottom surface of the upper seat (6) is provided with a positioning boss (18) extending downward, and the positioning bosses (18) are provided in two and are distributed on both sides of the bottom surface of the upper seat (6). The lower seat (7) is provided with two positioning grooves (19) corresponding to the positioning bosses (18). After the upper seat (6) and the lower seat (7) are tightly closed, the bottom end of the positioning boss (18) extends into the interior of the positioning groove (19), and the blade (5) is provided with a positioning through hole (20) corresponding to the positioning boss (18).

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