A grass trimming head facilitating the winding and unwinding of a trimming line

Abstract

The utility model relates to a beat grass head convenient to beat grass line to put, including beat grass machine work end, beat grass head main part and assembling component, beat grass head main part includes the top shell of installing at beat grass machine work end bottom, the bottom plate of installing at top shell bottom, the inner core of installing at bottom plate top, the knock plate of installing at bottom plate bottom, installs at the inner core top and installs at the reset piece of the take -out spare and installs at the reset piece top, through assembling column drive reset board extrude reset spring, reset board drive limit post moves, the relative position of limit post and limit hole is controlled, and then the relative position of positioning block and positioning groove is controlled, and the dismounting between positioning plate and positioning seat is conveniently realized, realizes beat grass head main part and beat grass machine work end's quick assembling, and the user replaces different beat grass head according to the demand, improves work efficiency and user experience, and the practicality is good.

Description

Technical Field

[0001] This utility model relates to the field of grass trimming head technology, and in particular to a grass trimming head that facilitates the retraction and extension of grass trimming lines. Background Technology

[0002] A lawnmower is a common garden tool used in backyard maintenance. It cuts weeds using a high-speed rotating cutting line or blade. The cutting head, also known as the mowing head, is the core working component at the front of a handheld lawnmower.

[0003] A search revealed a dual-outlet mowing head with publication number CN209047038U. This mowing head includes a cover, a threading port, a base plate, an inner core, a positioning component, a movable end gear plate, a fixed end gear plate, and a spring. The teeth of the fixed end gear plate are positioned within a groove in the cover body. The positioning component consists of a polygonal prism and an end gear plate. The bottom end of the polygonal prism is fixed in the middle of the end gear plate. The fixed end gear plate has polygonal holes that mate with the polygonal prism. The polygonal prism of the positioning component passes through the through hole of the movable end gear plate and mates with the polygonal hole of the fixed end gear plate. A spring connects the fixed end gear plate and the positioning component. The inner core is a cylindrical body with a limit plate. The movable end gear plate mates with the inner core, and the end of the inner core passes through the base plate. This invention uses the rotation of the inner core to quickly feed the thread, with two threads exiting from each side, improving mowing efficiency, reducing the time spent changing nylon threads during mowing, ensuring consistent thread length each time, and avoiding waste of nylon thread.

[0004] The device in this patent requires the user to align the threads and rotate it multiple times to tighten it onto the lawn mower, which is inconvenient. When the user needs to change the mowing head according to usage requirements, the traditional connection method is time-consuming and laborious, which seriously affects work efficiency and user experience, and has low practicality. Utility Model Content

[0005] In response to the problems in existing patents, where users need to align the threads and rotate the device multiple times to tighten it onto the lawn mower, resulting in inconvenience and the time-consuming and laborious traditional connection method when users need to change the mowing head according to their needs, which seriously affects work efficiency and user experience and has low practicality, this utility model provides a mowing head that facilitates the retraction and extension of the mowing line.

[0006] The technical solution adopted in this utility model is: a tweezer head that facilitates the retraction and extension of tweezers, comprising:

[0007] Working end of the lawn mower;

[0008] The main body of the grass trimmer is installed at the bottom of the working end of the grass trimmer. The main body of the grass trimmer includes a top shell installed at the bottom of the working end of the grass trimmer, a bottom plate installed at the bottom of the top shell, an inner core installed at the top of the bottom plate, a striking disc installed at the bottom of the bottom plate, a take-up and release component installed at the top of the inner core, and a reset component installed at the top of the take-up and release component.

[0009] The assembly assembly is installed on the top of the top shell and the bottom of the working end of the grass cutter, and the assembly assembly is used to realize the disassembly and assembly between the grass cutting head body and the working end of the grass cutter;

[0010] The assembly assembly includes a positioning plate fixedly welded to the top of the top shell, a positioning block fixedly welded to the top of the positioning plate, a positioning seat fixedly installed at the bottom of the working end of the lawn mower via an auxiliary plate, an I-shaped block fixedly welded to one side of the positioning seat, and an assembly structure installed inside the positioning seat.

[0011] Furthermore, the bottom of the positioning seat is provided with a positioning groove, and a reset groove is provided on one side of the positioning groove. The assembly structure includes a reset plate fused to the inner wall of the reset groove by a reset spring, an assembly column and a limiting column fixedly welded to one side of the reset plate.

[0012] Furthermore, the positioning block cooperates with the positioning groove, and a limiting hole is formed on the positioning block, which cooperates with the limiting post.

[0013] Furthermore, the shaped block is used in conjunction with the assembly column.

[0014] Furthermore, wiring ports are provided on both sides of the top shell.

[0015] The beneficial effects of this utility model are:

[0016] The assembly column drives the reset plate to compress the reset spring, and the reset plate drives the limit column to move, controlling the relative position of the limit column and the limit hole, and in turn controlling the relative position of the positioning block and the positioning groove. This facilitates the assembly and disassembly of the positioning plate and the positioning seat, and enables the quick assembly of the grass trimmer head body and the grass trimmer working end. It also allows users to easily change different grass trimmer heads according to their needs, improving work efficiency and user experience, and is highly practical. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a bottom-view three-dimensional structural diagram of another working state of this utility model;

[0019] Figure 3This is a three-dimensional structural diagram of the assembly structure in this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the disassembled main body of the grass trimming head in this utility model.

[0021] The diagram is marked as follows:

[0022] 1. Working end of the lawn mower;

[0023] 2. Main body of the grass trimmer; 201. Top shell; 202. Bottom plate; 203. Inner core; 204. Striking disc; 205. Retracting and extending parts; 206. Resetting parts;

[0024] 3. Assembly components; 301. Positioning plate; 302. Positioning block; 303. Positioning seat; 304. C-shaped block; 305. Assembly structure; 3051. Return spring; 3052. Return plate; 3053. Assembly column; 3054. Limiting column;

[0025] 4. Positioning groove; 5. Limiting hole; 6. Wiring port. Detailed Implementation

[0026] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described below.

[0029] To address the problems existing in the background art, this application proposes the following technical solution:

[0030] A grass trimmer head that facilitates the retraction and extension of the grass trimming line includes: a grass trimmer working end 1, a grass trimmer head body 2, and an assembly component 3;

[0031] The main body 2 of the grass trimmer is installed at the bottom of the working end 1 of the grass trimmer. The main body 2 of the grass trimmer includes a top shell 201 installed at the bottom of the working end 1 of the grass trimmer, a bottom plate 202 installed at the bottom of the top shell 201, an inner core 203 installed at the top of the bottom plate 202, a striking disc 204 installed at the bottom of the bottom plate 202, a take-up and release component 205 installed at the top of the inner core 203, and a reset component 206 installed at the top of the take-up and release component 205.

[0032] Furthermore, the top shell 201 has wire loading ports 6 on both sides, and the retractor 205 has a ratchet structure and elastic pawl inside. Under normal conditions, the pawl engages with the wire groove on the outer wall of the inner core 203 to restrict the free release of the mowing line. When the mower is working, the inner core 203 rotates at high speed with the working end 1 of the mower, and the mowing line is thrown out from the wire loading port 6 under the action of centrifugal force and kept in a taut state for mowing operations.

[0033] When the trimming line wears out and needs to be released, the impact disc 204 transmits the impact force upward to the reset component 206. The compression spring of the reset component 206 deforms under the force and pushes the push rod. The push rod drives the pawl of the take-up and release component 205 to overcome the spring force and disengage from the line groove. At this time, the trimming line is automatically released to an appropriate length under the action of centrifugal force. After the collision stops, the compression spring of the reset component 206 resets, the push rod retracts, and the pawl of the take-up and release component 205 re-engages with the line groove under the action of its own spring. The ratchet one-way locking structure prevents the trimming line from being over-released, thus achieving precise adjustment of the trimming line.

[0034] like Figure 1-4 As shown, the assembly component 3 is installed on the top of the top shell 201 and the bottom of the working end 1 of the grass cutter. The assembly component 3 is used to realize the assembly and disassembly between the grass cutting head body 2 and the working end 1 of the grass cutter.

[0035] The assembly component 3 includes a positioning plate 301 fixedly welded to the top of the top shell 201, a positioning block 302 fixedly welded to the top of the positioning plate 301, a positioning seat 303 fixedly installed at the bottom of the working end 1 of the grass trimmer via an auxiliary plate, a C-shaped block 304 fixedly welded to one side of the positioning seat 303, and an assembly structure 305 installed inside the positioning seat 303.

[0036] Furthermore, the positioning seat 303 has a positioning groove 4 at its bottom and a reset groove on one side of the positioning groove 4. The assembly structure 305 includes a reset plate 3052 fused to the inner wall of the reset groove by a reset spring 3051, an assembly column 3053 fixedly welded to one side of the reset plate 3052, and a limiting column 3054.

[0037] Furthermore, the positioning block 302 cooperates with the positioning groove 4, and the positioning block 302 has a limiting hole 5. The limiting hole 5 cooperates with the limiting post 3054. The C-shaped block 304 is used in conjunction with the assembly post 3053. The C-shaped block 304 is used to protect the assembly post 3053 during the grass cutting process.

[0038] Working principle: During use, the mowing line is inserted into the inner core 203 through the wire loading ports 6 on both sides of the top shell 201. The take-up and release components 205 cooperate with the inner core 203 to wind and store the mowing line. When the mower is working, the inner core 203 rotates at high speed with the working end 1 of the mower. Under the action of centrifugal force, the mowing line is thrown out from the wire loading port 6 and kept in a taut state for mowing. When the mowing line is worn to a certain extent and a new line needs to be released, the collision and striking disc 204 is used. The collision and striking disc 204 drives the reset component 206. The reset component 206 releases the lock of the take-up and release components 205 on the mowing line. Under the action of centrifugal force, the mowing line is automatically released to an appropriate length. After the collision stops, the reset component 206 drives the take-up and release components 205 to reset and relock the mowing line, realizing the automatic take-up and release adjustment of the mowing line.

[0039] The assembly column 3053 drives the reset plate 3052 to compress the reset spring 3051. The reset plate 3052 drives the limit column 3054 to move, thereby controlling the relative position of the limit column 3054 and the limit hole 5, and thus controlling the relative position of the positioning block 302 and the positioning groove 4. This facilitates the assembly and disassembly of the positioning plate 301 and the positioning seat 303, enabling the rapid assembly of the grass trimmer head body 2 and the grass trimmer working end 1. It also allows users to easily replace different grass trimmer heads according to their needs, improving work efficiency and user experience, and demonstrating good practicality.

[0040] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0041] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A hay trimmer head that facilitates the retraction and extension of hay trimming lines, characterized in that, include: Working end of lawn mower (1); The main body of the grass trimmer (2) is installed at the bottom of the working end (1) of the grass trimmer. The main body of the grass trimmer (2) includes a top shell (201) installed at the bottom of the working end (1) of the grass trimmer, a bottom plate (202) installed at the bottom of the top shell (201), an inner core (203) installed at the top of the bottom plate (202), a striking disc (204) installed at the bottom of the bottom plate (202), a take-up and release component (205) installed at the top of the inner core (203), and a reset component (206) installed at the top of the take-up and release component (205). Assembly component (3), the assembly component (3) is installed on the top of the top shell (201) and the bottom of the working end (1) of the grass cutter, the assembly component (3) is used to realize the assembly and disassembly between the grass cutter head body (2) and the working end (1) of the grass cutter; The assembly component (3) includes a positioning plate (301) fixedly welded to the top of the top shell (201), a positioning block (302) fixedly welded to the top of the positioning plate (301), a positioning seat (303) fixedly installed at the bottom of the working end (1) of the grass cutter via an auxiliary plate, a C-shaped block (304) fixedly welded to one side of the positioning seat (303), and an assembly structure (305) installed inside the positioning seat (303).

2. The hay trimmer head according to claim 1, characterized in that, The positioning seat (303) has a positioning groove (4) at the bottom and a reset groove on one side of the positioning groove (4). The assembly structure (305) includes a reset plate (3052) fused to the inner wall of the reset groove by a reset spring (3051), an assembly column (3053) fixedly welded to one side of the reset plate (3052), and a limiting column (3054).

3. A hay trimmer head for easy retraction and extension of hay trimming line according to claim 2, characterized in that, The positioning block (302) cooperates with the positioning groove (4), and a limiting hole (5) is provided on the positioning block (302), which cooperates with the limiting post (3054).

4. A hay trimmer head for easy retraction and extension of hay trimming line according to claim 3, characterized in that, The shaped block (304) is used in conjunction with the assembly column (3053).

5. A hay trimmer head for easy retraction and extension of hay trimming line according to claim 1, characterized in that, The top shell (201) has wiring openings (6) on both sides.

Images