A lawn mower

Abstract

The present invention discloses a grass trimmer, which relates to the technical field of garden tools. The grass trimmer includes a residual line collection device connected to a protective cover, the residual line collection device includes a cutting unit and a residual line collection unit, the cutting unit has a cutting blade facing in the opposite direction of rotation of a grass trimmer head, the cutting unit is used to cut off the grass trimming rope exceeding the required length, and the residual line collection unit is used to collect the cut residual lines of the grass trimming rope. The grass trimmer has the function of residual line collection, is environmentally friendly and safe, and has a good user experience.

Description

Technical Field

[0001] The invention relates to the technical field of garden tools, in particular to a grass trimmer. Background Art

[0002] Grass trimmers are widely used in garden management. If the grass trimmer rope becomes worn or broken during use, the grass trimmer head needs to be re-struck to release the rope, which will cause the grass trimmer rope to be too long. The excess length of the grass trimmer rope will be cut by the blade and scattered on the grass, causing environmental pollution. At the same time, the broken rope is still flying at a high speed and can hit people or animals, causing injuries.

[0003] Therefore, it is urgent to propose a grass trimmer to solve the above-mentioned technical problems existing in the prior art. Summary of the invention

[0004] The object of the present invention is to provide a grass trimmer which has the function of collecting residual wires and is both environmentally friendly and safe.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The present invention provides a grass trimmer, comprising: a grass trimmer head, the grass trimmer head comprising a spool and a shell, the spool is used to wind a grass trimmer rope, and the shell is used to accommodate the spool; a shield, at least a portion of the shield is arranged around the grass trimmer head and is spaced apart from the grass trimmer head; the grass trimmer also comprises: a residual line collecting device, which is connected to the shield and comprises a cutting unit and a residual line collecting unit, the cutting unit has a cutting blade facing in the opposite direction to the rotation direction of the grass trimmer head, the cutting unit is used to cut off the grass trimmer rope that exceeds the required length, and the residual line collecting unit is used to collect the residual lines of the cut grass trimmer rope.

[0007] As a preferred technical solution of the above-mentioned grass trimmer, the residual wire collecting unit is a collecting box, the collecting box has a collecting cavity, and the cutting unit is arranged at the opening of the collecting cavity.

[0008] As a preferred technical solution of the above-mentioned grass trimmer, the residual wire collecting unit is a flexible collecting bag, the collecting bag has a collecting cavity, and the cutting unit is arranged at the opening of the collecting cavity.

[0009] As a preferred technical solution of the above-mentioned grass trimmer, the residual wire collection device also includes: a non-return plate, which is rotatably arranged at the opening of the collection chamber, and the non-return plate is configured to close the opening toward the outside of the collection chamber.

[0010] As a preferred technical solution of the above-mentioned grass trimmer, the cutting unit and the residual wire collecting unit are arranged in parallel, and the cutting unit is located between the inlet end and the end of the residual wire collecting unit.

[0011] The residual thread collecting unit comprises a clamping groove having a first clamping surface and a second clamping surface, and the first clamping surface and the second clamping surface are used for collecting the residual thread of the grass cutting rope.

[0012] As a preferred technical solution of the above-mentioned grass trimmer, the clamping groove includes a first end and a second end in sequence along the rotation direction of the grass trimmer head, the first end is provided with an inlet, and the second end is provided with a storage groove.

[0013] As a preferred technical solution of the above-mentioned lawn mower, the residual wire collection unit includes a comb tooth structure, and the comb tooth structure is provided with at least two layers along a direction perpendicular to the rotation plane of the lawn mower head, and the clamping groove is formed between two adjacent layers of the comb tooth structure, and the cutting unit is arranged near the end of the clamping groove.

[0014] As a preferred technical solution of the above-mentioned grass trimmer, a V-shaped introduction structure is provided at the notch of the clamping groove.

[0015] As a preferred technical solution of the above-mentioned grass trimmer, the residual wire collecting unit and the cutting unit can be detachably connected to the protective cover.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The grass trimmer provided by the present invention comprises a residual thread collection device connected to a protective cover, the residual thread collection device comprises a cutting unit and a residual thread collection unit, the cutting unit has a cutting blade facing in the opposite direction of rotation of the grass trimming head, the cutting unit is used to cut off the grass trimming rope exceeding the required length, and the residual thread collection unit is used to collect the cut residual thread of the grass trimming rope. The grass trimmer has the function of collecting residual threads, has high collection efficiency, is environmentally friendly and safe, and has a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural schematic diagram of a grass trimmer provided by Embodiment 1 of the present invention;

[0019] Figure 2 is a schematic diagram of a partial structure of the grass trimmer provided by the first embodiment of the present invention from another perspective;

[0020] Figure 3 This is a schematic diagram of the first structure of the grass trimmer provided by the second embodiment of the present invention;

[0021] Figure 4 yes Figure 3 Schematic diagram of the local structure;

[0022] Figure 5 yes Figure 4 Schematic diagram of the local structure;

[0023] Figure 6 is a second structural schematic diagram of the grass trimmer provided by the second embodiment of the present invention;

[0024] Figure 7 yes Figure 6 Schematic diagram of the local structure;

[0025] Figure 8 yes Figure 7 Schematic diagram of the local structure;

[0026] Fig. 9 is a third structural schematic diagram of the grass trimmer provided by the second embodiment of the present invention;

[0027] Fig.10 yes Fig. 9 Schematic diagram of the local structure.

[0028] In the figure:

[0029] 100. Cut the grass head;

[0030] 101. Straw rope; 102. Straw rope remnant;

[0031] 111. Cutting unit;

[0032] 112. Collection box;

[0033] 113. Entrance; 114. Storage tank;

[0034] 115. Comb structure;

[0035] 200. Shield. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Embodiment 1:

[0040] This embodiment discloses a grass trimmer, such as Figure 1 As shown, the lawn mower comprises a connecting rod, a lawn mower head 100, a driving part, an operating part and a coupling part. One end of the connecting rod is connected to the driving part, and the other end is connected to the operating part. The coupling part is arranged at an end of the operating part away from the connecting rod. The lawn mower head 100 is connected to the driving part and can perform lawn mowing when driven; the coupling part is used to connect a power supply device and can transmit electric energy to the driving part. The operating part can be operated by a user to control the lawn mower.

[0041] The mowing head 100 includes a spool and a housing, wherein the spool is used to wind the mowing rope 101, and the housing is used to accommodate the spool. Figure 1 and Figure 2 As shown, the grass trimmer also includes a shield 200 and a residual thread collection device. At least part of the shield 200 is arranged around the grass trimming head 100 and is spaced apart from the grass trimming head 100. The residual thread collection device is connected to the shield 200 and includes a cutting unit 111 and a residual thread collection unit. The cutting unit 111 has a cutting blade facing the opposite direction of rotation of the grass trimming head 100. The cutting unit 111 is used to cut off the grass trimming rope 101 that exceeds the required length, and the residual thread collection unit is used to collect the cut grass trimming rope residual thread 102. In this embodiment, the cutting unit and the residual thread collection unit are independent structures. In other embodiments, they can also be an integrated structure, which is not limited here. By providing the residual thread collection device, the grass trimming rope 101 that exceeds the required length is cut by the cutting unit 111, and the broken grass trimming rope 101 will not fall to the ground, but will be collected in the residual thread collection unit to avoid hitting people or animals and causing injuries. Compared with the existing technology, this lawn mower has the function of collecting residual wires, which is environmentally friendly and safe, and provides a good user experience.

[0042] Specifically, the residual line collection unit is a collection box 112, and the collection box 112 has a collection cavity, and the cutting unit 111 is arranged at the opening of the collection cavity. When the mowing rope 101 rotates at a high speed to the position of the cutting unit 111, it is cut by the cutting blade of the cutting unit 111, and the residual line 102 of the mowing rope still has a high rotation speed, and flies into the collection box 112 at a high rotation speed for collection. The cutting unit 111 can be arranged near the opening of the collection cavity, and it can be ensured that the mowing rope first contacts the cutting blade of the cutting unit 111 and then flies into the collection cavity. Specifically, the cutting unit 111 is arranged in parallel with the opening, and the cutting unit 111 has a cutting edge that mainly has a cutting function, and the cutting edge is flush with the opening of the collection box 112. The cutting unit 111 is arranged in parallel with one side of the opening of the collection box 112 along the vertical direction, and can be arranged on the inside or outside of the collection box 112, which is not limited here.

[0043] The collecting box 112 is extended along the rotation direction of the mowing head 100. Optionally, the collecting box 112 is an arc-shaped box, and the size of its collecting cavity is related to the size of the central angle corresponding to the collecting box 112 and the coverage area of ​​the shield 200, and can be designed according to actual conditions.

[0044] When the arc length of the collection box 112 is short, that is, the corresponding central angle is small, the collection chamber of the collection box 112 is small. At this time, when there are more grass-cutting rope residues 102 in the collection chamber, the grass-cutting rope residues 102 are easy to slide out and fall from the opening of the collection chamber. To solve this problem, the residue collection device of this embodiment also includes a non-return block plate, which is rotatably arranged at the opening of the collection chamber. The non-return block plate can close the opening toward the outside of the collection chamber and can open the opening toward the inside of the collection chamber. By setting the non-return block plate, the grass-cutting rope residues 102 can smoothly enter the collection chamber and cannot automatically slide out of the collection chamber.

[0045] Preferably, the collection box 112 is detachably connected to the shield 200. After the collection box 112 is filled with the mowing rope residue 102, the collection box 112 can be quickly separated and removed from the mowing machine to pour out the mowing rope residue 102; after the mowing rope residue 102 is emptied, the collection box 112 can be quickly installed for continued use.

[0046] Furthermore, the cutting unit 111 is detachably connected to the shield 200. Thus, it is convenient to replace the cutting unit 111. Further preferably, the cutting unit 111 is a blade.

[0047] It should be noted that the collection box 112 and the cutting unit 111 may be detachably connected to the shield 200 by one or more of threaded connection, plug-in connection, and snap-on connection, which is not specifically limited in this embodiment.

[0048] In another feasible implementation of this embodiment, the residual wire collection unit is a flexible collection bag, the collection bag has a collection cavity, and the cutting unit 111 is arranged at the opening of the collection cavity. When the mowing rope 101 rotates at a high speed to the position of the cutting unit 111, it is cut by the cutting blade of the cutting unit 111, and the mowing rope residual wire 102 still has a high rotation speed and flies into the collection box 112 at a high rotation speed for collection.

[0049] A check piece (not shown) is provided at the opening of the collection bag, and the check piece is rotatably connected to the opening of the collection chamber, and the check piece can close the opening toward the outside of the collection chamber and can open the opening toward the inside of the collection chamber. By providing the check piece, the grass rope residue 102 can smoothly enter the collection chamber and cannot automatically slide out of the collection chamber.

[0050] Preferably, the collecting bag is detachably connected to the shield 200. After the collecting bag is filled with the mowing rope residue 102, the collecting bag can be quickly separated and removed from the mowing machine to pour out the mowing rope residue 102; after the mowing rope residue 102 is emptied, the collecting bag can be quickly installed for continued use.

[0051] Furthermore, the cutting unit 111 is detachably connected to the shield 200. Thus, it is convenient to replace the cutting unit 111. Further preferably, the cutting unit 111 is a blade.

[0052] It should be noted that the collection box 112 and the cutting unit 111 may be detachably connected to the shield 200 by one or more of threaded connection, plug-in connection, and snap-on connection, which is not specifically limited in this embodiment.

[0053] Compared with the collection box 112, the weight of the collection bag is significantly reduced, which greatly reduces the weight of the residual thread collection device, making the entire lawn mower easier and more convenient to operate.

[0054] Embodiment 2:

[0055] This embodiment provides a grass trimmer, such as Figure 3 As shown, the mower 100 includes a connecting rod, a mowing head 100, a driving part, an operating part and a coupling part. Among them, one end of the connecting rod is connected to the driving part, and the other end is connected to the operating part. The coupling part is arranged at an end of the operating part away from the connecting rod. The mowing head 100 is connected to the driving part and can perform mowing operations when driven. The coupling part is used to connect a power supply device and can transmit electric energy to the driving part. The operating part can be operated by a user to control the mower 100.

[0056] The mowing head 100 includes a spool and a housing, wherein the spool is used to wind the mowing rope 101, and the housing is used to accommodate the spool. Figure 3As shown, the grass trimmer also includes a shield 200 and a residual line collection device. At least part of the shield 200 is arranged around the grass trimming head 100 and is spaced apart from the grass trimming head 100. The residual line collection device is connected to the shield 200 and includes a cutting unit 111 and a residual line collection unit. The cutting unit 111 has a cutting blade facing the opposite direction of rotation of the grass trimming head 100. The cutting unit 111 is used to cut off the grass trimming rope 101 that exceeds the required length, and the residual line collection unit is used to collect the cut grass trimming rope residual line 102. By setting the residual line collection device, the grass trimming rope 101 that exceeds the required length is cut by the cutting unit 111, and the broken grass trimming rope 101 will not fall to the ground, but will be collected in the residual line collection unit to avoid hitting people or animals and causing injuries. Compared with the prior art, the grass trimmer has the function of residual line collection, which is environmentally friendly and safe, and has a good user experience.

[0057] Specifically, Figures 3 to 10 As shown, the residual thread collection unit has an entrance section, an extension section and a terminal arranged in sequence along the direction in which the residual thread enters. The cut residual thread enters from the entrance section and moves to the extension section or the terminal to stop. The cutting unit 111 is arranged in parallel with the residual thread collection unit. Specifically, the cutting unit 111 is arranged in parallel with the side wall of the residual thread collection unit in the vertical direction, and the position of the cutting unit 111 is between the entrance end and the terminal of the residual thread collection unit, that is, it is arranged at the extension section.

[0058] The residual thread collection unit includes a clamping groove having a first clamping surface and a second clamping surface, and the first clamping surface and the second clamping surface are used to collect the residual thread 102 of the mowing rope. When the first clamping surface and the second clamping surface are made of non-elastic materials, there should be a gap between them, and the gap is less than or equal to the diameter of the residual thread. When the first clamping surface and the second clamping surface are made of elastic materials, no gap is required. Since the cutting unit 111 is arranged between the entrance end and the end of the residual thread collection unit, the mowing rope 101 can be cut by the cutting blade of the cutting unit 111, and the cut residual thread 102 of the mowing rope enters the clamping groove and is collected.

[0059] As a feasible implementation method, Figures 3 to 5As shown, the clamping groove includes a first end and a second end in sequence along the rotation direction of the mowing head 100, the first end is provided with an inlet 113, and the second end (i.e., the end) is provided with a storage groove 114. Optionally, a cutting unit 111 is arranged at the connection between the first end and the second end. The mowing rope 101 enters the clamping groove from the inlet 113, and after being cut by the cutting unit 111, the mowing rope residual line 102 is clamped in the storage groove 114 and remains in the storage groove 114, thereby achieving the collection function. In this embodiment, the clamping groove can be made of a metal elastic material, and the diameter of the clamping groove is slightly smaller than the diameter of the residual line. After the residual line enters, the elastic material of the clamping groove causes the upper and lower clamping surfaces to move slightly outward. As the residual line enters the storage groove 114, the upper and lower clamping surfaces return to their original positions, so that one groove can clamp multiple residual lines, and the residual line is not easy to fall off.

[0060] Optionally, a V-shaped introduction structure is provided at the notch of the clamping groove, i.e., the entrance 113, so that the mowing rope 101 can smoothly enter the clamping groove. Further, optionally, the storage groove 114 is in a straight line shape, and each time the mowing rope is released by tapping, the mowing rope residue 102 will be clamped by the clamping groove and clamped side by side in the storage groove 114. When the mowing rope is full, the user only needs to remove the mowing rope residue 102 from the storage groove 114 and then continue to collect the mowing rope residue 102.

[0061] As another possible implementation, Figures 6 to 8 As shown, the residual line collection unit includes a comb tooth structure 115, and the comb tooth structure 115 is provided with at least two layers along the direction perpendicular to the rotation plane of the grass trimming head 100. The comb tooth groove between the two adjacent layers of the comb tooth structure 115 is the above-mentioned clamping groove, and the cutting unit 111 is arranged at the part of the extension section of the clamping groove close to the end. In this embodiment, the width of the clamping groove is approximately equal to the diameter of the residual line. The grass trimming rope 101 rotates at high speed and first enters the clamping groove to be clamped, and then is cut by the cutting unit 111. The residual line at the end is clamped by the clamping groove and remains in the clamping groove, thereby achieving the collection function. Every time the line is released by tapping, the residual line 102 of the grass trimming rope is clamped by the clamping groove. After the clamping groove is full of the residual line 102 of the grass trimming rope, the user cleans up the residual line 102 of the grass trimming rope and can continue to collect the residual line 102 of the grass trimming rope. Optionally, a V-shaped introduction structure is provided at the notch of the clamping groove so that the grass trimming rope 101 can smoothly enter the clamping groove.

[0062] As another feasible implementation method, Fig. 9 and Fig.10 As shown, the residual thread collecting unit includes at least two rows of comb tooth structures 115 arranged side by side to improve the clamping stability.

[0063] It should be noted that the residual wire collection unit and the protective cover 200 in this embodiment are detachably connected to achieve rapid separation and disassembly of the residual wire collection unit and the grass trimmer as well as rapid installation, thereby improving the convenience of use.

[0064] Furthermore, the cutting unit 111 is detachably connected to the shield 200, so as to facilitate the replacement of the cutting unit 111. Further preferably, the cutting unit 111 is a blade.

[0065] It should be noted that the residual wire collecting unit and the cutting unit 111 may be detachably connected to the shield 200 by one or more of threaded connection, plug-in connection, and snap-on connection, and this embodiment does not impose any specific limitation.

[0066] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A lawn mower, comprising: A mowing head, the mowing head comprising a spool and a shell, the spool being used for winding a mowing rope, and the shell being used for accommodating the spool; A protective cover, at least a portion of which is disposed around the mowing head and is spaced apart from the mowing head; Characterized in that the lawn mower further comprises: A residual thread collecting device connected to the guard, comprising a cutting unit and a residual thread collecting unit, wherein the cutting unit has a cutting blade facing in the opposite direction to the rotation direction of the mowing head, the cutting unit is used to cut off the mowing rope exceeding the required length, and the residual thread collecting unit is used to collect the cut residual threads of the mowing rope; The residual wire collection unit comprises a clamping groove having a first clamping surface and a second clamping surface, and the first clamping surface and the second clamping surface are used to collect the residual wire of the grass cutting rope; The clamping groove includes a first end and a second end in sequence along the rotation direction of the grass trimming head, the first end is provided with an inlet, and the second end is provided with a storage groove.

2. The grass trimmer according to claim 1, characterized in that: The residual wire collecting unit is a collecting box having a collecting cavity, and the cutting unit is arranged at the opening of the collecting cavity.

3. The grass trimmer according to claim 1, characterized in that: The residual thread collecting unit is a flexible collecting bag having a collecting cavity, and the cutting unit is arranged at the opening of the collecting cavity.

4. The grass trimmer according to claim 2 or 3, characterized in that: The residual thread collecting device also includes: A non-return plate is rotatably arranged at the opening of the collecting chamber, and the non-return plate is configured to close the opening toward the outside of the collecting chamber.

5. The grass trimmer according to claim 1, characterized in that: The cutting unit is arranged in parallel with the residual thread collecting unit, and the cutting unit is located between an inlet end and a rear end of the residual thread collecting unit.

6. The grass trimmer according to claim 1, characterized in that: The residual thread collecting unit comprises a comb tooth structure, which is provided with at least two layers in a direction perpendicular to the rotation plane of the mowing head, and the clamping groove is formed between two adjacent layers of the comb tooth structure, and the cutting unit is arranged near the end of the clamping groove.

7. The grass trimmer according to any one of claims 1 to 6, characterized in that: A V-shaped introduction structure is provided at the notch of the clamping groove.

8. The grass trimmer according to claim 1, characterized in that: The residual wire collecting unit and the cutting unit can be detachably connected to the protective cover.

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