Edge trimmer
By introducing the unlocking and locking position switching mechanism of the operating parts into the trimming machine, combining through holes, limiting holes and elastic reset parts, the safety hazards of the trimming machine during maintenance or not use are solved, and the safety of use is improved.
Patent Information
- Application Number
- CN202422353439.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-25
AI Technical Summary
When existing edge trimmers are repaired or not in use, the risk of the shaft driving the cutting plate or blade rotating is high, and safety measures are lacking.
An edge trimmer is designed to limit the rotation of the cutting unit's cutter wheel or blade by switching between the unlocking and locking positions, including the design of through holes and limiting holes, and the use of elastic reset parts, ensuring that the blade cannot rotate when not in use.
It improves the safety of the edge trimmer, prevents the cutter or blade from accidentally rotating in non-working state, and enhances safety protection.
Smart Images
Figure CN223080588U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power tools, in particular to a trimming machine. Background Art
[0002] A trimming machine is used to trim the edges of a lawn. A lawn edger is a tool specifically designed for trimming the edges of a lawn. It can help users clearly separate the lawn edges from other areas such as flower beds, sidewalks, driveways, etc., making the lawn look neater and more beautiful. The following are some of the main uses of a lawn edger: Trimming lawn boundaries: A lawn edger can trim neat lawn edges, preventing lawn grass from growing into areas where it shouldn't, such as around paving bricks, flower beds, or sidewalk edges; Separating areas: It can create a distinct dividing line between the lawn and other areas, such as between the lawn and flower beds, driveways, fences, ensuring a clean transition between different areas; Enhancing the appearance of the lawn: By using an edger, the lines of the lawn edges can be kept smooth, thus enhancing the beauty of the overall yard or garden; Reducing weed spread: The edger can cut off the spreading path of the lawn roots, preventing grass from spreading from the lawn to other unwanted areas, thereby reducing the growth of weeds.
[0003] The working principle of a lawn edger is basically to flatten or trim the lawn edges into the desired shape by rotating a cutter head or blade. It is usually driven by an electric motor or a pneumatic motor, and the power is transmitted to the cutter head or blade through a transmission device. After starting the edger, the motor will cause the cutter head or blade to rotate at a high speed, usually at several thousand revolutions per minute. When the lawn edge or the corner of the lawn comes into contact with the cutter head or blade, the edger will convert the rotational kinetic energy of the cutter head or blade into cutting force and cut off a part of the lawn.
[0004] Currently, due to the lack of safety measures, there is a risk that the rotating shaft drives the cutter head or blade to rotate during maintenance or when not in use for a trimming machine.
[0005] Therefore, there is an urgent need to provide a trimming machine to solve the above problems. Summary of the Utility Model
[0006] The purpose of the utility model is to provide a trimming machine that can limit the rotation of the cutter head or blade according to the actual use situation and improve the use safety.
[0007] To achieve the above purpose, the following technical solutions are provided:
[0008] A trimming machine, comprising a power unit and a cutting unit, wherein the power unit includes:
[0009] An assembly bracket;
[0010] A rotating shaft assembly, the rotating shaft assembly is rotatably arranged on the assembly bracket, and the cutting unit is in transmission connection with the rotating shaft assembly;
[0011] An operating member, arranged on the assembly bracket, the operating member has a stroke of moving relative to the assembly bracket, and the stroke includes a first position for unlocking the rotating shaft assembly and a second position for locking the rotating shaft assembly.
[0012] As an alternative of the trimming machine, through holes and limiting holes that communicate with each other are arranged on the operating member. When the operating member is in the first position, the rotating shaft assembly passes through the through hole. When the operating member is in the second position, the rotating shaft assembly passes through the limiting hole.
[0013] As an alternative of the trimming machine, the inner diameter of the through hole is larger than the inner diameter of the limiting hole.
[0014] As an alternative of the trimming machine, the limiting hole is U-shaped, a first limiting surface is arranged on the circumferential wall of the rotating shaft assembly, a second limiting surface is arranged on the inner wall of the limiting hole, and the first limiting surface is stopped from rotating by the second limiting surface.
[0015] As an alternative of the trimming machine, the power unit further includes an elastic reset member, and the elastic reset member is used to make the operating member always have a tendency to switch from the second position to the first position.
[0016] As an alternative of the trimming machine, an installation portion is arranged on the side wall of the operating member close to the assembly bracket, a receiving groove is arranged on the side wall of the assembly bracket close to the operating member, the installation portion and the elastic reset member are both received in the receiving groove, and opposite ends of the elastic reset member are respectively abutted against the installation portion and the side wall of the receiving groove.
[0017] As an alternative of the trimming machine, the elastic reset member includes a first spring, a limiting post is arranged on the side wall of the receiving groove, one end of the first spring is sleeved on the limiting post, or the elastic reset member includes a second spring, and the second spring is sleeved on the operating member.
[0018] As an alternative of the trimming machine, a guiding groove is arranged on the side wall of the assembly bracket close to the operating member, and one end of the operating member is inserted into the guiding groove and can move along the Z direction.
[0019] As an alternative of the trimming machine, the rotating shaft assembly includes a motor shaft and an output shaft that are in transmission connection, and the operating member can lock or unlock with the output shaft or the motor shaft.
[0020] As an alternative of the trimming machine, the motor shaft is in meshing transmission, belt transmission or chain transmission with the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments of the present utility model. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the embodiments of the present utility model and these drawings.
[0022] Figure 1 It is an assembly schematic diagram of the trimming machine in the embodiment of the present utility model;
[0023] Figure 2 It is an internal schematic diagram of the trimming machine when the operating member is in the first position in the embodiment of the present utility model;
[0024] Figure 3 It is an internal schematic diagram of the trimming machine when the operating member is in the second position in the embodiment of the present utility model;
[0025] Figure 4 It is a structural schematic diagram of the motor shaft in the embodiment of the present utility model;
[0026] Figure 5 It is an exploded schematic diagram of the assembly bracket, the operating member and the elastic reset member in the embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the drawings here can be arranged and designed in various different configurations.
[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.
[0029] In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and defined, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0030] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.
[0031] In order to be able to limit the rotation of the cutter head or blade of the cutting unit according to the actual use situation and improve the use safety, the present embodiment provides a trimming machine. The following combines Figures 1 to 5 to describe the specific content of the present embodiment in detail. It should be noted that the length direction mentioned in the present embodiment refers to Figure 2 the Z direction in
[0032] The trimming machine 100 in the present embodiment includes a power unit 101 and a cutting unit 102. The power unit 101 includes an assembly bracket 1, a rotating shaft assembly 2, and an operating member 3. The rotating shaft assembly 2 is rotatably arranged on the assembly bracket 1, and the cutting unit 102 is in transmission connection with the rotating shaft assembly 2. The operating member 3 is arranged on the assembly bracket 1, and the operating member 3 has a stroke of moving relative to the assembly bracket 1. The stroke includes a first position for unlocking the rotating shaft assembly 2 and a second position for locking the rotating shaft assembly 2.
[0033] In short, the trimming machine 100 provided by the present utility model includes a power unit 101 and a cutting unit 102. The rotating shaft assembly 2 and the operating member 3 are both installed on the assembly bracket 1. The operating member 3 can switch between a first position and a second position relative to the assembly bracket 1. When the trimming machine 100 is completed with maintenance or in use, the operating member 3 is controlled to be in the first position for unlocking the rotating shaft assembly 2. When the trimming machine 100 needs maintenance or is not in use, the operating member 3 is controlled to be in the second position for locking the rotating shaft assembly 2. The trimming machine 100 provided by the present utility model is convenient for limiting the rotation of the cutter head or blade of the cutting unit 102 according to the actual use situation and improving the use safety.
[0034] Further, the operating member 3 is provided with a through hole 31 and a limiting hole 32 that communicate with each other. When the operating member 3 is in the first position, the rotating shaft assembly 2 passes through the through hole 31. When the operating member 3 is in the second position, the rotating shaft assembly 2 passes through the limiting hole 32. Specifically, a part of the operating member 3 is exposed outside the housing of the power unit 101, facilitating user operation. A through hole 31 and a limiting hole 32 are provided at the middle position of the operating member 3. The rotating shaft assembly 2 passes through the through hole 31 or the limiting hole 32, and the two are in communication with each other, facilitating the up and down movement of the rotating shaft assembly 2 between the two.
[0035] Further, the inner diameter of the through hole 31 is larger than the inner diameter of the limiting hole 32. When the user does not press the operating member 3, the rotating shaft assembly 2 is located in the through hole 31. At this time, the diameter of the rotating shaft assembly 2 is significantly smaller than the diameter of the through hole 31, ensuring that the rotating shaft assembly 2 can freely rotate in the through hole 31 to transmit power, and at this time, the trimming machine 100 can work normally. When the user presses the operating member 3, the rotating shaft assembly 2 is located in the limiting hole 32. At this time, the diameter of the rotating shaft assembly 2 is basically the same as the diameter of the limiting hole 32, and the rotating shaft assembly 2 cannot freely rotate in the limiting hole 32, playing a locking role on the rotating shaft assembly 2, and at this time, the trimming machine 100 cannot work normally.
[0036] Further, the limiting hole 32 is U-shaped. A first limiting surface 21 is provided on the circumferential wall of the rotating shaft assembly 2, and a second limiting surface 321 is provided on the inner wall of the limiting hole 32. The first limiting surface 21 is stopped from rotating by the second limiting surface 321. The two opposite sides of the limiting hole 32 corresponding to are both the second limiting surface 321. Correspondingly, a flat square structure is provided on the rotating shaft assembly 2, and the two opposite sides corresponding to the flat square structure are both the first limiting surface 21. In the locked state, the first limiting surface 21 and the second limiting surface 321 are engaged with each other, making the rotating shaft assembly 2 unable to rotate, thereby achieving the purpose of locking.
[0037] Further, the power unit 101 further includes an elastic resetting member 4, and the elastic resetting member 4 is used to make the operating member 3 always have a tendency to switch from the second position to the first position. When the user does not press the operating member 3 (when the external force is lost), the elastic resetting member 4 can automatically reset the operating member 3 from the second position to the first position.
[0038] Exemplarily, an installation portion 33 is provided on the side wall of the operating member 3 close to the assembly bracket 1, and a receiving groove 11 is provided on the side wall of the assembly bracket 1 close to the operating member 3. The installation portion 33 and the elastic resetting member 4 are both received in the receiving groove 11, and the opposite ends of the elastic resetting member 4 are respectively abutted against the installation portion 33 and the side wall of the receiving groove 11.
[0039] Further, in some application scenarios, such as Figure 2 Combined with Figure 5As shown, the elastic reset member 4 includes a first spring, and a limiting column (not shown) is provided on the side wall of the receiving groove 11, and one end of the first spring is sleeved on the limiting column. By adding the limiting column, it is convenient to prevent the first spring from shaking during the upward and downward expansion process.
[0040] In other application scenarios, the elastic reset member 4 includes a second spring, and the second spring is sleeved on the operating member 3. The second spring is sleeved on the operating member 3 along the length direction of the operating member 3, and the second spring can prevent itself from shaking during the upward and downward extension process through the operating member 3.
[0041] Furthermore, a guide groove 12 is provided on the side wall of the assembly bracket 1 near the operating member 3, and one end of the operating member 3 is inserted into the guide groove 12 and can move along the Z direction. By adding the guide groove 12, it is convenient to guide the operating member 3 to move up and down only along the Z direction.
[0042] Furthermore, the shaft assembly 2 includes a motor shaft 22 and an output shaft 23 which are transmission-connected, and the operating member 3 can be locked or unlocked with the output shaft 23 or the motor shaft 22. A first limiting surface 21 is correspondingly provided on the motor shaft 22 or the output shaft 23.
[0043] Optionally, the motor shaft 22 and the output shaft 23 are gear-engaged, belt-driven or chain-driven. It is understandable that the motor shaft 22 and the output shaft 23 can select corresponding transmission modes according to actual use scenarios, and no excessive restrictions are made here.
[0044] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. Trimming machine, comprising a power unit and a cutting unit, wherein the power unit comprises: Assembly bracket; Rotating shaft assembly, the rotating shaft assembly is rotatably arranged on the assembly bracket, and the cutting unit is in transmission connection with the rotating shaft assembly; Operating member, arranged on the assembly bracket, the operating member has a stroke of moving relative to the assembly bracket, and the stroke includes a first position for unlocking the rotating shaft assembly and a second position for locking the rotating shaft assembly.
2. The trimming machine according to claim 1, characterized in that, The operating member is provided with a through hole and a limiting hole that communicate with each other. When the operating member is in the first position, the rotating shaft assembly passes through the through hole. When the operating member is in the second position, the rotating shaft assembly passes through the limiting hole.
3. The trimming machine according to claim 2, wherein The inner diameter of the through hole is larger than the inner diameter of the limiting hole.
4. The trimming machine according to claim 3, characterized in that, The limiting hole is U-shaped. The circumferential wall of the rotating shaft assembly is provided with a first limiting surface, and the inner wall of the limiting hole is provided with a second limiting surface. The first limiting surface is stopped from rotating by the second limiting surface.
5. The trimming machine according to claim 1, wherein The power unit further comprises an elastic reset member, and the elastic reset member is used to make the operating member always have a tendency to switch from the second position to the first position.
6. The trimming machine according to claim 5, wherein, An installation portion is provided on the side wall of the operating member close to the assembly bracket, and a receiving groove is provided on the side wall of the assembly bracket close to the operating member. The installation portion and the elastic reset member are both received in the receiving groove, and the opposite ends of the elastic reset member are respectively in contact with the installation portion and the side wall of the receiving groove.
7. The trimming machine according to claim 6, wherein, The elastic reset member includes a first spring, and a limiting post is provided on the side wall of the receiving groove. One end of the first spring is sleeved on the limiting post, or the elastic reset member includes a second spring, and the second spring is sleeved on the operating member.
8. The trimming machine according to claim 1, wherein A guiding groove is provided on the side wall of the assembly bracket close to the operating member, and one end of the operating member is inserted into the guiding groove and can move along the Z direction.
9. The trimming machine according to claim 1, characterized in that The rotating shaft assembly includes a motor shaft and an output shaft that are in transmission connection, and the operating member can lock or unlock with the output shaft or the motor shaft.
10. The trimming machine according to claim 9, characterized in that, The motor shaft is in gear meshing transmission, belt transmission or chain transmission with the output shaft.