Portable self-winding grass trimming head

Abstract

The portable self-winding grass trimming head comprises an upper cover and a lower cover, the upper cover is detachably installed on the lower cover, a threading hole is formed in the side face of the lower end of the upper cover, a winding wheel is arranged in an area defined by the upper cover and the lower cover, three limiting discs are integrally formed on the outer wall of the winding wheel, and the limiting discs are arranged on the outer wall of the winding wheel. The three limiting discs are arranged at equal intervals from top to bottom, a line storage groove is formed between every two adjacent limiting discs, the limiting disc located in the middle of the winding wheel is provided with a through hole for the grass trimming rope to penetrate out, and one end of the grass trimming rope can penetrate into the through hole from the line penetrating hole in one end of the upper cover and then penetrate out from the line penetrating hole in the other end of the upper cover. A knob is detachably mounted at the bottom of the reel, and the grass trimming rope can be wound in the rope storage groove by rotating the knob; according to the grass trimmer, the grass trimming rope can be replaced under the condition that the grass trimming head is not detached, and the replacement efficiency of the grass trimming rope is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mowing tools, in particular to a portable self-winding mowing head. Background Art

[0002] A lawn mower is a commonly used and practical garden tool. Common types include rope-type and blade-type. As for rope-type lawn mowers, the most commonly used one is the reel-type mower head. The nylon rope is wound around the reel, and the reel is installed on the mechanical output shaft. The head of the nylon rope is exposed outside the reel through the through hole on the reel. The nylon rope exposed outside the reel can be used for mowing operations when it rotates at high speed. It has the advantages of reasonable structure, light weight, small size, flexible and convenient operation, and is widely used.

[0003] After using the existing mowing head for a period of time, the mowing head cover needs to be removed and a new mowing rope needs to be manually replaced. The re-installation process is relatively complicated and the operation is troublesome.

[0004] Therefore, a portable self-winding grass trimmer head is proposed. Utility Model Content

[0005] The utility model aims to solve the problems raised in the background technology and provides a portable self-winding grass trimmer head.

[0006] The specific technical solutions are as follows:

[0007] The purpose of the present invention is to provide a portable self-winding grass trimmer head, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0009] A portable self-winding grass trimmer head comprises an upper cover and a lower cover, the upper cover being detachably mounted on the lower cover, a threading hole being provided on the side surface of the lower end of the upper cover, a winding wheel being provided in the area surrounded by the upper cover and the lower cover, a limiting disk being integrally formed on the outer wall of the winding wheel, three limiting disks being provided, and the three limiting disks being equidistant from top to bottom, a wire storage slot being formed between two adjacent limiting disks, a through hole for passing the grass trimming rope through being provided on the limiting disk located in the middle of the winding wheel, one end of the grass trimming rope can be passed through the through hole from the threading hole at one end of the upper cover, and then passed through the threading hole at the other end of the upper cover, a knob being detachably mounted on the bottom of the winding wheel, and the grass trimming rope can be wound around the wire storage slot by rotating the knob.

[0010] In a portable self-winding grass trimmer according to the utility model, the knob is rotatably arranged inside the lower end of the lower cover, the lower end of the knob passes through the bottom of the lower cover, a limiting groove is provided at the bottom of the winding wheel, the inner wall of the knob is fixedly connected to a limiting block, and the limiting block is stuck in the limiting groove.

[0011] In a portable self-winding grass trimmer according to the utility model, a spring is provided inside the upper cover, the top of the spring is against the inner top of the upper cover, the bottom of the spring is pressed against the upper end of the winding wheel, and the bottom of the lowermost limit plate is integrally formed with a clamping block, the inner bottom of the lower cover is fixedly connected to the limiting protrusion, and the right-angled surface of the clamping block can be against one side of the limiting protrusion.

[0012] In a portable self-winding grass trimmer according to the utility model, an elastic clamp is integrally formed on the side of the upper cover, a clamping slot is provided at the lower end of the lower cover, and the lower end of the elastic clamp can be clamped inside the clamping slot.

[0013] In a portable self-winding grass trimmer according to the utility model, a nut for connecting to a gear box at the power end is installed inside the upper cover.

[0014] In a portable self-winding grass trimmer according to the utility model, a limiting seat is integrally formed at the upper end of the lower cover, an aluminum wire clip is inserted into the limiting seat, and the grass trimming rope passes through the inner side of the aluminum wire clip.

[0015] In a portable self-winding grass trimmer according to the utility model, an iron striking block is fixedly embedded at the bottom of the knob.

[0016] In a portable self-winding grass trimmer according to the utility model, an indicator groove for indicating the direction of the wire inlet of the through hole is provided at the lower end of the knob.

[0017] The utility model has at least the following beneficial effects:

[0018] The utility model can replace the mowing rope without disassembling the mowing head, thereby effectively improving the replacement efficiency of the mowing rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the portable self-winding grass trimmer head of the utility model;

[0020] Figure 2 This is a schematic structural diagram of the portable self-winding grass trimmer head of the utility model from another perspective;

[0021] Figure 3 This is a schematic structural diagram of the upper cover of the utility model;

[0022] Figure 4 This is a schematic structural diagram of the winding reel of the present utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the knob of the present utility model;

[0024] Figure 6 This is a schematic diagram of the explosion structure of the lower cover of the utility model;

[0025] Figure 7 The figure is a schematic cross-sectional view of the portable self-winding grass trimmer head of the utility model.

[0026] In the attached figure:

[0027] 1. Upper cover; 101. Elastic clamp; 102. Threading hole; 2. Lower cover; 201. Limit seat; 202. Limit protrusion; 203. Card slot; 3. Knob; 301. Limit block; 302. Knob; 303. Indicator slot; 4. Winding wheel; 401. Limit slot; 402. Card block; 403. Through hole; 404. Limit disk; 5. Nut; 6. Spring; 7. Aluminum wire clamp. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0029] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] In the description of this utility model, unless otherwise expressly specified or limited, when the term "connection" or the like appears to indicate a connection relationship between components, such term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral 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; it can be internal communication between two components or an interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0032] Example

[0033] The portable self-winding grass trimmer provided in this embodiment is as follows: Figure 1-Figure 7 As shown, it includes an upper cover 1 and a lower cover 2. A nut 5 for connecting to a power source is installed inside the upper cover 1. The upper cover 1 can be detachably installed on the lower cover 2. In this embodiment, an elastic clamp 101 is integrally formed on the side of the upper cover 1, and a clamping groove 203 is provided at the lower end of the lower cover 2. The lower end of the elastic clamp 101 can be clamped in the inside of the clamping groove 203 to facilitate the installation of the upper cover 1 and the lower cover 2. A threading hole 102 is provided on the side of the lower end of the upper cover 1. A winding wheel 4 is provided in the area surrounded by the upper cover 1 and the lower cover 2. A device is integrally formed on the outer wall of the winding wheel 4. A limit disk 404 is provided, and there are three limit disks 404. The three limit disks 404 are equidistant from top to bottom, and a wire storage groove is formed between two adjacent limit disks 404. A through hole 403 for the mowing rope to pass through is provided on the limit disk 404 located in the middle of the winding wheel 4. One end of the mowing rope can be passed through the through hole 403 from the threading hole 102 at one end of the upper cover 1, and then passed through the threading hole 102 at the other end of the upper cover 1. A knob 3 is detachably installed at the bottom of the winding wheel 4, and the mowing rope can be wound into the wire storage groove by rotating the knob 3.

[0034] In this embodiment, the knob 3 is rotatably arranged inside the lower end of the lower cover 2, and the lower end of the knob 3 passes through the bottom of the lower cover 2. A limiting groove 401 is provided at the bottom of the winding wheel 4. The inner wall of the knob 3 is fixedly connected to the limiting block 301, and the limiting block 301 is stuck in the limiting groove 401. By rotating the knob 3, the winding wheel 4 is driven to rotate.

[0035] In this embodiment, in order to ensure that the winding wheel 4 can rotate together with the upper cover 1, a spring 6 is provided inside the upper cover 1, the top of the spring 6 is against the inner top of the upper cover 1, and the bottom of the spring 6 is pressed against the upper end of the winding wheel 4. The bottom of the lowest limit plate 404 is fixedly connected with a block 402, and the inner bottom of the lower cover 2 is fixedly connected with the limiting protrusion 202. The right-angled surface of the block 402 can be against one side of the limiting protrusion 202. Under the elastic force of the spring 6, the right-angled surface of the block 402 can be against one side of the limiting protrusion 202, so that when the upper cover 1 and the lower cover 2 rotate, the winding wheel 4 can be driven to rotate synchronously.

[0036] It should be noted that the mowing head rotates counterclockwise when in operation. At this time, under the centrifugal force and the elastic force of the spring 6, the right-angled surface of the clamping block 402 can be tightly pressed against one side of the limiting protrusion 202.

[0037] When it is necessary to reel in the mowing rope, it is only necessary to rotate the knob 3 clockwise. Since the bottom of the block 402 has a slope, the block 402 can pass through the slope to cross the limiting protrusion 202 and rotate in the lower cover 2, thereby facilitating the winding operation of the mowing rope by the winding wheel 4. There is no need to squeeze the rotating knob 3 upwards, and the operation is more convenient.

[0038] In this embodiment, a limiting seat 201 is integrally formed at the upper end of the lower cover 2, and an aluminum wire clip 7 is inserted into the limiting seat 201. The mowing rope passes through the inner side of the aluminum wire clip 7. The aluminum wire clip 7 can protect the threading hole 102, effectively preventing the threading hole 102 from being worn by the high-speed rotating mowing rope.

[0039] In this embodiment, an iron striking block 302 is fixedly embedded in the bottom of the knob 3. The striking block 302 can effectively reduce the wear of the bottom of the knob 3 when it is struck.

[0040] In this embodiment, an indicator groove 303 is provided at the lower end of the knob for indicating the direction of the wire inlet of the through hole 403. When the indicator groove 303 is aligned with the aluminum wire clip, the through hole 403 and the threading hole 102 are on the same axis, and the threading operation of the grass rope can be performed at this time. Through this setting, the user can intuitively understand the position of the wire inlet of the through hole 403.

[0041] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0042] Working principle: When the mowing rope is worn during operation of the mowing head and needs to be lengthened, the ground is knocked to squeeze the knob 3 upward, thereby moving the block 402 to above the limiting protrusion 202, and then the knob 3 is rotated counterclockwise, thereby causing the winding wheel 4 to rotate counterclockwise, lengthening the mowing rope wound on the winding wheel 4 until the mowing rope can be drawn out from the through hole 403;

[0043] When installing a new mowing rope, rotate the knob 3 until the through hole 403 on the winding wheel 4 is aligned with the middle hole of the aluminum wire clamp 7 (the indicator groove 302 on the knob 3 is aligned with the middle hole of the aluminum wire clamp 7), then pass the mowing rope through the middle hole of the aluminum wire clamp 7 and the through hole 403 on the winding wheel 4, and then pass it out from the middle hole of the aluminum wire clamp 7 at the other end, and make the front and rear end lengths of the mowing rope basically the same, rotate the knob 3 clockwise to reel the excess mowing rope exposed outside the upper cover 1 into the wire storage slot.

[0044] The above are only preferred embodiments of the present invention and do not limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable self-winding grass trimmer head, characterized in that: The invention comprises an upper cover (1) and a lower cover (2), wherein the upper cover (1) is detachably mounted on the lower cover (2), a threading hole (102) is provided on the side surface of the lower end of the upper cover (1), a winding wheel (4) is provided in the area enclosed by the upper cover (1) and the lower cover (2), a limiting disk (404) is integrally formed on the outer wall of the winding wheel (4), and three limiting disks (404) are provided, and the three limiting disks (404) are equidistantly arranged from top to bottom, and there is a gap between two adjacent limiting disks (404). A wire storage groove is formed, and a through hole (403) for the weeding rope to pass through is provided on the limiting plate (404) located in the middle of the winding wheel (4). One end of the weeding rope can pass through the through hole (403) from the threading hole (102) at one end of the upper cover (1), and then pass through the threading hole (102) at the other end of the upper cover (1). A knob (3) is detachably installed at the bottom of the winding wheel (4), and the weeding rope can be wound into the wire storage groove by rotating the knob (3).

2. The portable self-winding grass trimmer according to claim 1, characterized in that: The knob (3) is rotatably arranged inside the lower end of the lower cover (2), and the lower end of the knob (3) passes through the bottom of the lower cover (2). A limiting groove (401) is provided at the bottom of the winding wheel (4), and the inner wall of the knob (3) is fixedly connected to a limiting block (301), and the limiting block (301) is stuck in the limiting groove (401).

3. The portable self-winding grass trimmer according to claim 2, characterized in that: A spring (6) is provided inside the upper cover (1), the top of the spring (6) abuts against the inner top of the upper cover (1), the bottom of the spring (6) presses against the upper end of the winding wheel (4), the bottom of the lowermost limiting plate (404) is integrally formed with a clamping block (402), the inner bottom of the lower cover (2) is fixedly connected to the limiting protrusion (202), and the right-angled surface of the clamping block (402) can abut against one side of the limiting protrusion (202).

4. The portable self-winding grass trimmer according to claim 3, characterized in that: An elastic clamp (101) is integrally formed on the side surface of the upper cover (1), and a clamping slot (203) is provided at the lower end of the lower cover (2). The lower end of the elastic clamp (101) can be clamped inside the clamping slot (203).

5. The portable self-winding grass trimmer according to claim 4, characterized in that: A nut (5) for connecting to a gear box at the power end is installed inside the upper cover (1).

6. A portable self-winding grass trimmer according to any one of claims 1 to 5, characterized in that: A limiting seat (201) is integrally formed on the upper end of the lower cover (2), an aluminum wire clamp (7) is inserted into the limiting seat (201), and the grass rope is passed through the inner side of the aluminum wire clamp (7).

7. The portable self-winding grass trimmer according to claim 2, characterized in that: An iron striking block (302) is fixedly embedded in the bottom of the knob (3).

8. The portable self-winding grass trimmer according to claim 2, characterized in that: The lower end of the knob is provided with an indicating slot (303) for indicating the direction of the wire inlet of the through hole (403).

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