Lithium battery grass trimmer

Abstract

The utility model discloses a lithium battery grass trimmer, which relates to the technical field of grass trimmers, and comprises a machine head assembly, the top end of the machine head assembly is provided with a wire wheel support assembly in a buckling connection manner, the bottom end of the machine head assembly is fixedly provided with a grass trimming head, and the bottom end of one side of the machine head assembly is fixedly provided with a protective cover. A rotating handle is movably installed at the top end of one side of the machine head assembly. The design of the wire wheel support assembly is adopted to replace a traditional steel wire protector, the limiting protrusions on the wire wheel support assembly are clamped into the different clamping grooves, different angles can be changed, the protection function is achieved, meanwhile, under the special conditions such as trimming, supporting rolling can be achieved through the two rolling wheels, and the wire wheel support assembly is convenient to use. The machine head assembly or the protective cover is prevented from touching the ground, the guiding effect is achieved, manual holding is not needed all the time, fatigue of workers is reduced, and the repairing effect can be improved.

Description

Technical Field

[0001] This utility model relates to the field of lawn mower technology, and in particular to a lithium battery lawn mower. Background Technology

[0002] As a type of lawn trimming tool in gardening, lawn mowers have received widespread attention. Typically, a lawn mower consists of a mowing head for mowing, and inside the mowing head is a spool for winding mowing rope.

[0003] Existing lawnmowers have steel wire guards at the front. These guards are designed to protect trees during weeding by preventing the trimming rope or blades from accidentally damaging them. However, in certain environments (such as trimming edges), the wire guards are ineffective and can cause the lawnmower to touch the ground during operation. Prolonged handheld operation can also be tiring.

[0004] Therefore, it is necessary to invent a lithium battery-powered lawn mower to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a lithium battery-powered grass trimmer to solve the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a lithium battery grass cutter, comprising a head assembly, a wheel bracket assembly snapped to the top of the head assembly, a grass cutting head fixedly mounted at the bottom of the head assembly, a protective cover fixedly mounted at the bottom of one side of the head assembly, and a rotating handle movably mounted at the top of one side of the head assembly.

[0007] The head assembly includes a head housing, and the top of the outer side wall of the head housing has multiple slots.

[0008] The reel support assembly includes an L-shaped connecting rod. A boss is integrally formed on the upper surface of the L-shaped connecting rod near the head assembly. A buckle cover is integrally formed on the upper surface of the L-shaped connecting rod near the head assembly, and the buckle cover is adapted to the top of the head housing. A wheel axle is movably provided through the other end of the upper surface of the L-shaped connecting rod, and rollers are fixedly inserted at both ends of the wheel axle.

[0009] Preferably, a lower aluminum tube is snapped into one end of the rotating handle, a connecting sleeve is fixedly snapped into the top end of the lower aluminum tube, an upper aluminum tube is snapped into the top end of the connecting sleeve, and a handle is snapped into the top end of the upper aluminum tube.

[0010] Preferably, a motor is fixedly installed inside the machine head housing, and multiple limiting blocks are integrally formed on the top of the outer side wall of the machine head housing, and the multiple limiting blocks are distributed in a circular array. A connector is integrally formed on the top of the side of the machine head housing near the rotating handle, and the connector is movably connected to the rotating handle through a pin.

[0011] Preferably, the inner wall of the buckle is integrally formed with multiple limiting grooves arranged in a ring array, and the limiting grooves are adapted to the limiting blocks.

[0012] Preferably, the top of the boss is provided with a groove, and one end of the groove passes through the buckle cover and communicates with the inside of the buckle cover.

[0013] Preferably, a locking block is slidably provided inside the slide groove. The locking block has a limit protrusion integrally formed at one end near the buckle cover, and the limit protrusion is adapted to the slot. A return spring is fixedly installed on the locking block, and one end of the return spring is fixedly connected to the inner wall of the end of the slide groove away from the buckle cover.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] This utility model replaces the traditional steel wire guard with a design using a thread wheel bracket assembly. The limiting protrusions on the thread wheel bracket assembly can be inserted into different slots to change different angles. While providing protection, it can also support the rolling of the machine head assembly or protective cover in special situations such as trimming, preventing it from hitting the ground and serving a guiding function. It eliminates the need for manual handling, reduces worker fatigue, and improves repair efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the internal exploded structure of the head assembly of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the machine head shell of this utility model.

[0019] Figure 4 This is a schematic diagram of the reel support assembly of this utility model.

[0020] In the diagram: 1. Head assembly; 2. Roller support assembly; 3. Rotating handle; 4. Lower aluminum tube; 5. Connecting sleeve; 6. Upper aluminum tube; 7. Handle; 8. Protective cover; 9. Trimming head; 101. Head housing; 102. Connector; 103. Limiting block; 104. Slot; 105. Motor; 201. L-shaped connecting rod; 202. Buckle cover; 203. Limiting groove; 204. Slide groove; 205. Locking block; 206. Limiting protrusion; 207. Return spring; 208. Axle; 209. Roller; 210. Boss. 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] This utility model provides, for example Figure 1-4 The illustrated lithium battery-powered grass trimmer includes a head assembly 1. A reel bracket assembly 2 is snap-fitted to the top of the head assembly 1. A grass trimming head 9 is fixedly mounted on the bottom of the head assembly 1. The grass trimming head 9 has multiple eyelets arranged in a circular array for mounting grass trimming ropes. A protective cover 8 is fixedly mounted on the bottom side of the head assembly 1. A rotating handle 3 is movably mounted on the top side of the head assembly 1. A lower aluminum tube 4 is snap-fitted to one end of the rotating handle 3. A connecting sleeve 5 is fixedly inserted to the top of the lower aluminum tube 4. An upper aluminum tube 6 is snap-fitted to the top of the connecting sleeve 5. A handle 7 is snap-fitted to the top of the upper aluminum tube 6.

[0023] Furthermore, the head assembly 1 includes a head housing 101. The top of the outer side wall of the head housing 101 is provided with multiple slots 104. Generally, two slots 104 are provided. One slot allows the roller 209 on the thread wheel bracket assembly 2 to be located in the opposite direction of the connector 102. The other slot allows the roller 209 to rotate 90° relative to the first slot. The remaining angles can be adjusted according to actual needs. A motor 105 is fixedly installed inside the head housing 101, which can provide support and guidance in special situations such as trimming. Multiple limiting blocks 103 are integrally formed on the top of the outer side wall of the head housing 101, and the multiple limiting blocks 103 are distributed in a ring array. A connector 102 is integrally formed on the top of the side of the head housing 101 near the rotating handle 3, and the connector 102 is movably connected to the rotating handle 3 through a pin.

[0024] The reel support assembly 2 includes an L-shaped connecting rod 201. A boss 210 is integrally formed on the upper surface of the L-shaped connecting rod 201 near the head assembly 1. A cover 202 is integrally formed on the same end of the L-shaped connecting rod 201 near the head assembly 1, and the cover 202 is adapted to the top of the head housing 101. A wheel axle 208 is movably inserted through the other end of the upper surface of the L-shaped connecting rod 201, and rollers 209 are fixedly inserted into both ends of the wheel axle 208. The inner wall of the cover 202... The body is formed with multiple limiting grooves 203 arranged in a circular array, and the limiting grooves 203 are adapted to the limiting blocks 103. The limiting grooves 203 and the limiting blocks 103 can play a limiting role and improve the stability of the installation of the reel bracket assembly 2. The top of the boss 210 is provided with a sliding groove 204, and one end of the sliding groove 204 passes through the buckle cover 202 and communicates with the inside of the buckle cover 202. A locking movable block 205 is slidably arranged inside the sliding groove 204. 05. A limiting protrusion 206 is integrally formed at one end near the buckle cover 202, and the limiting protrusion 206 is adapted to the slot 104. The bottom end of the limiting protrusion 206 is inclined, so that when the buckle cover 202 is fastened, the limiting protrusion 206 drives the locking block 205 to automatically retract, which facilitates the installation of the thread wheel bracket assembly 2. A return spring 207 is fixedly installed on the locking block 205, and one end of the return spring 207 is fixedly connected to the inner wall of the end of the slide groove 204 away from the buckle cover 202. By adopting the design of the thread wheel bracket assembly 2, instead of the traditional steel wire guard, the limiting protrusion 206 on the thread wheel bracket assembly 2 can be inserted into different slots 104 to change different angles. While playing a protective role, it can also be supported and rolled by two rollers 209 in special situations such as trimming, preventing the machine head assembly 1 or the protective cover 8 from touching the ground and playing a guiding role. It eliminates the need for manual hand-holding, reduces worker fatigue, and improves repair efficiency.

[0025] Working principle of this utility model:

[0026] When in use, the reel bracket assembly 2 is fastened to the top of the head housing 101, so that the limiting protrusion 206 is engaged in one of the slots 104, and the roller 209 on the reel bracket assembly 2 is positioned in the opposite direction of the connector 102, so that the reel bracket assembly 2 acts like a steel wire guard for protection. When mowing grass, the roller 209 can hold the tree trunk to prevent the grass rope from damaging the tree trunk.

[0027] Pull the locking block 205 to move away from the buckle cover 202, compressing the return spring 207 until the limiting protrusion 206 moves away from the inside of the corresponding slot 104. Then remove the thread wheel bracket assembly 2, rotate the thread wheel bracket assembly 2 90°, and fasten the thread wheel bracket assembly 2 again, so that the limiting protrusion 206 re-engages into the inside of another slot 104. In special cases such as trimming, the roller 209 can be used for support, thereby performing rolling trimming.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery string trimmer characterized by: Including the nose assembly (1), the top end of the nose assembly (1) is snap connected with a wire wheel support assembly (2), the bottom end of the nose assembly (1) is fixedly installed with a grass hitting head (9), and the bottom end of the one side of the nose assembly (1) is fixedly installed with a protective cover (8); the top end of the one side of the nose assembly (1) is movably installed with a rotating handle (3); The nose assembly (1) comprises a nose shell (101), and a plurality of clamping grooves (104) are formed in the top end of the outer side wall of the nose shell (101); The wire wheel support assembly (2) comprises an L-shaped connecting rod (201), a boss (210) is integrally formed on the upper surface of the one end of the L-shaped connecting rod (201) close to the nose assembly (1), a buckle cover (202) is integrally formed on the one end of the L-shaped connecting rod (201) close to the nose assembly (1), the buckle cover (202) is matched with the top end of the nose shell (101), and a wheel shaft (208) is movably and penetratingly arranged on the other end of the upper surface of the L-shaped connecting rod (201), and the two ends of the wheel shaft (208) are fixedly and insertingly provided with a plurality of rollers (209).

2. A lithium battery string trimmer according to claim 1, wherein: One end of the rotating handle (3) is snapingly and insertingly provided with a lower aluminum pipe (4), the top end of the lower aluminum pipe (4) is fixedly and insertingly provided with a connecting sleeve (5), the top end of the connecting sleeve (5) is snapingly and insertingly provided with an upper aluminum pipe (6), and the top end of the upper aluminum pipe (6) is snapingly and installingly provided with a handle (7).

3. A lithium battery string trimmer according to claim 2, wherein: A motor (105) is fixedly installed in the inside of the nose shell (101), a plurality of limiting blocks (103) are integrally formed on the top end of the outer side wall of the nose shell (101) and are arranged in an annular array, a connecting head (102) is integrally formed on the top end of the one side of the nose shell (101) close to the rotating handle (3), and the connecting head (102) is movably connected with the rotating handle (3) through a pin shaft.

4. A lithium battery string trimmer according to claim 3, wherein: The inner side wall of the buckle cover (202) is integrally formed with a plurality of limiting grooves (203) arranged in an annular array, and the limiting grooves (203) are matched with the limiting blocks (103).

5. A lithium battery string trimmer according to claim 4, wherein: The top end of the boss (210) is provided with a sliding groove (204), and one end of the sliding groove (204) penetrates the buckle cover (202) and communicates with the inside of the buckle cover (202).

6. A lithium battery string trimmer according to claim 5, wherein: A stop movable block (205) is slidably arranged in the inside of the sliding groove (204), a limiting protrusion (206) is integrally formed on the one end of the stop movable block (205) close to the buckle cover (202), the limiting protrusion (206) is matched with the clamping groove (104), a return spring (207) is fixedly installed on the stop movable block (205), and one end of the return spring (207) is fixedly connected with the inner wall of the one end of the sliding groove (204) away from the buckle cover (202).

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