Grass trimmer

Abstract

A grass trimmer comprising a body and a shroud connected to the body, the shroud being rotatably connected to the body between a first position and a second position, the grass trimmer comprising a connector connected between the body and the shroud, the connector comprising a first portion mounted or connected to the body and a second portion mounted or connected to the shroud, the first portion cooperates with the second portion to bias and hold the shroud in the first position. The grass trimmer can effectively solve the problem that the protective cover is damaged after the grass trimmer falls off.

Description

Technical Field

[0001] This utility model relates to the field of grass cutting equipment technology, and in particular to a grass cutter. Background Technology

[0002] Many existing garden tools have protective covers. However, during drop tests or actual use, the covers often deform or break when the machine is dropped from a height.

[0003] To address these issues, existing technologies typically modify the protective cover itself, such as replacing the material with softer PP, using spatial design to enhance its strength, and adding reinforcing ribs to make it more robust. However, these solutions are clearly superficial and do not truly solve the drop problem. For example, brush cutter blades rotate at high speeds and generate significant kinetic energy. From both a protective and user perspective, iron protective covers seem more reliable than plastic ones. However, iron covers are prone to deformation and failure upon impact, leading to the current market predominantly using plastic protective covers. Utility Model Content

[0004] In view of this, the present invention provides a lawn mower that can effectively solve the problem of the protective cover being damaged after the lawn mower falls.

[0005] A lawn mower includes a body and a cover connected to the body, the cover being rotatably connected to the body between a first position and a second position. The lawn mower includes a connector connecting the body and the cover, the connector including a first portion mounted or connected to the body and a second portion mounted or connected to the cover, the first portion cooperating with the second portion to bias the cover to hold it in the first position.

[0006] In an embodiment of this utility model, the body includes a first connecting platform extending from its outer side wall, the cover includes a second connecting platform connected to the first connecting platform, and the connector includes a rotating shaft rotatably connected between the first connecting platform and the second connecting platform.

[0007] In an embodiment of this utility model, the connecting member includes a biasing member connected between the first connecting platform and the second connecting platform. The biasing member includes a first portion connected to the first connecting platform and a second portion connected to the second connecting platform.

[0008] In an embodiment of this utility model, the biasing member is configured as a torsion spring sleeved on the rotating shaft. The torsion spring has a first leg and a second leg at both ends. The first leg is connected to the first connecting platform, and the second leg is connected to the second connecting platform.

[0009] In an embodiment of this utility model, the biasing member is configured as a tension spring with one end connected to the first connecting platform and the other end connected to the second connecting platform.

[0010] In an embodiment of this utility model, the above-mentioned body includes a head shell and a connecting rod connected to the head shell. The head shell includes a first housing for connecting a working component and a second housing for mounting the connecting rod. The second housing is connected to the side wall of the first housing.

[0011] In an embodiment of this utility model, the first part is fixed to the second housing, the second part is fixed to the protective cover, the first part and the second part constitute a first magnet and a second magnet respectively, and the first magnet and the second magnet are magnetically repelled; or, the first part and the second part constitute opposite ends of a compression spring.

[0012] In an embodiment of this utility model, the first connecting platform extends from the side wall of the first housing toward the protective cover. The connecting member includes a third magnet and a fourth magnet. The third magnet is fixed to the first housing or the first connecting platform to form the first part, and the fourth magnet is fixed to the protective cover to form the second part. The third magnet and the fourth magnet are correspondingly arranged and magnetically attracted to each other.

[0013] In an embodiment of this utility model, the first housing includes a limiting block for counteracting the biasing force of the connector. When the cover is in the first position, the limiting block abuts against the side wall of the cover to hold the cover in the first position.

[0014] In an embodiment of this utility model, the above-mentioned lawn mower further includes a motor, a connecting rod, and a handle assembly housed in the first housing to drive the working component. One end of the connecting rod is connected to the second housing, and the other end of the connecting rod is connected to the handle assembly.

[0015] The lawnmower of this invention maintains its working state under normal or minimal external force, with the protective cover remaining in its relative position to the main body. Under significant external force or impact, the cover is forced to change its posture. During this process, a portion of the external force is absorbed and stored by the connecting component. Once the impact subsides or the external force disappears, the connecting component releases the stored energy, causing the cover to return to its original position. Therefore, the installation of a connecting component between the main body and the cover effectively solves problems such as cover damage after a fall, failure due to deformation, and accidental disintegration. Attached Figure Description

[0016] Figure 1 This is a side view of the lawn mower according to the first embodiment of this application.

[0017] Figure 2 This is a top view of the lawn mower according to the first embodiment of this application.

[0018] Figure 3 yes Figure 2 The diagram shows the disassembled structure of the lawn mower.

[0019] Figure 4 This is a side view of the lawn mower according to the second embodiment of this application.

[0020] Figure 5 This is a side view of the lawn mower according to the third embodiment of this application.

[0021] Figure 6 This is a side view of the lawn mower according to the fourth embodiment of this application.

[0022] Figure 7 This is a side view of the lawn mower according to the fifth embodiment of this application. Detailed Implementation

[0023] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0024] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present application. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical and operational aspects may be made without departing from the spirit and scope of the present application. The following detailed description should not be considered limiting, and the terminology used herein is for describing particular embodiments only and is not intended to limit the present application.

[0025] Although the terms first, second, etc., are used in some instances to describe various elements herein, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0026] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of a feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition only occur when a combination of elements, functions, steps, or operations is inherently mutually exclusive in some way. Additionally, the term “connection” as used can refer to a physical connection between two structures, or to contact between two structures or the transmission of forces between them.

[0027] First Embodiment

[0028] Figure 1 This is a side view of the lawn mower according to the first embodiment of this application. Figure 2 This is a top view of the lawn mower according to the first embodiment of this application. Figure 3 yes Figure 2 The diagram shown illustrates the disassembled structure of the lawn mower. Figure 1 , Figure 2 and Figure 3 As shown, the lawn mower includes a body 12, a cover 13, and a connector 14. The cover 13 is rotatably connected to the body 12 between a first position and a second position. The connector 14 is connected between the body 12 and the cover 13. The connector includes a first portion mounted or connected to the body and a second portion mounted or connected to the cover. The first portion and the second portion cooperate to bias the cover 13 to be held in the first position.

[0029] Under normal conditions (no external force / minor external force), the guard 13 of this application remains in the working state (i.e., the first position) and its relative position to the main body 12 does not change. When subjected to a larger external force or impact, the guard 13 is forced to change its posture, i.e., it enters the second position. During this process, part of the external force on the guard 13 is absorbed and stored by the connector 14. Once the impact has passed or the external force has disappeared, the connector 14 releases the stored energy, allowing the guard 13 to continue maintaining the first position. Therefore, the installation of the connector 14 between the main body 12 and the guard 13 effectively solves problems such as damage to the guard 13 after a fall, failure due to deformation, and accidental disintegration.

[0030] Optionally, such as Figure 3As shown, the main body 12 and the protective cover 13 are connected by a shaft hole 101 and a rotating shaft 15. When the protective cover 13 is impacted, it can rotate around the rotating shaft 15. When the protective cover 13 is impacted, it rotates around the rotating shaft 15 due to the impact force. During this process, the connecting piece 14 gradually absorbs the impact energy, thus achieving the purpose of protecting the protective cover 13.

[0031] Optionally, such as Figure 1 and Figure 3 As shown, the body 12 includes a first connecting platform 123 extending from its outer side wall, the cover 13 includes a second connecting platform 131 connected to the first connecting platform, and the connector 14 includes a rotating shaft 15 rotatably connected between the first connecting platform and the second connecting platform. The first connecting platform 123 and the second connecting platform 131 are both provided with shaft holes 101, and the rotating shaft 15 passes through the shaft holes 101 of the first connecting platform 123 and the second connecting platform 131.

[0032] Optionally, such as Figure 1 As shown, the body 12 includes a head shell and a connecting rod 16 connected to the head shell. The head shell includes a first housing 121 for connecting a working component (not shown) and a second housing 122 for mounting the connecting rod 16. The second housing 122 is connected to the side wall of the first housing 121. The first connecting platform 123 extends from the side wall of the first housing 121 toward the protective cover 13 and is located below the second housing 122. When the protective cover 13 is impacted, it can rotate and abut against the side wall of the second housing 122. The first housing includes a limiting block 132 for counteracting the bias force of the connecting member 14. In this embodiment, the upper limit of the protective cover 13 is achieved by the second housing 122, and the lower limit of the protective cover 13 is achieved by the limiting block 132. When the protective cover 13 is not impacted, that is, when the protective cover 13 is in the first position, the limiting block 132 abuts against the side wall of the protective cover to keep the protective cover in the first position. When the protective cover 13 receives an external impact, the protective cover 13 will rotate around the pivot 15 toward the direction closer to the second housing 122. During this process, the connecting member 14 gradually absorbs the impact energy. If the impact force is large enough, the protective cover 13 will continue to rotate until it abuts against the side wall of the second housing 122, preventing the protective cover 13 from rotating further.

[0033] Optionally, the second housing 122 is inclined relative to the first housing 121; when the central axis of the first housing 121 is perpendicular to the horizontal plane, the angle between the central axis of the second housing 122 and the horizontal plane is, for example, 20° to 70°, such as 30°, 35°, 40°, 45°, 45°, 55°, 60°, or 65°.

[0034] Optionally, the lawn mower also includes a motor (not shown), a connecting rod 16, and a handle assembly (not shown) housed in the first housing 121 to drive the working components. One end of the connecting rod 16 is connected to the second housing 122, and the other end of the connecting rod 16 is connected to the handle assembly. In this embodiment, a cutting element is connected to the output end of the motor. The cutting element rotates at high speed under the drive of the motor to form a cutting plane, thereby enabling lawn mowing operations.

[0035] Optionally, the connecting rod 16 has a hollow channel, and the handle assembly is electrically connected to the motor assembly through a wire disposed in the hollow channel.

[0036] Optionally, the handle assembly includes a control mechanism and a battery pack, the battery pack being used to provide power to the motor assembly, and the control mechanism being used to control the battery pack to turn power on and off to the motor assembly.

[0037] Optionally, such as Figure 1 and Figure 3 As shown, the connector 14 includes a biasing member connected between the first connecting platform and the second connecting platform. The biasing member includes a first portion connected to the first connecting platform and a second portion connected to the second connecting platform. The biasing member is configured as a torsion spring 141 sleeved on the rotating shaft. The torsion spring has a first leg 1411 and a second leg 1412 at both ends. The first leg 1411 is connected to the first connecting platform, and the second leg 1412 is connected to the second connecting platform. When the protective cover 13 is not impacted, the torsion spring 141 will maintain the protective cover 13 in a normal working state due to its own elasticity. When the protective cover 13 is impacted and the torsion spring 141 undergoes elastic deformation, the torsion spring 141 gradually absorbs the impact energy, achieving the purpose of protecting the protective cover 13. When the impact force on the protective cover 13 disappears, the torsion spring 141 returns to its deformation, causing the protective cover 13 to reset.

[0038] Optionally, the material of the shield 13 may be iron or plastic, but is not limited thereto.

[0039] Second Embodiment

[0040] Figure 4 This is a side view of the lawn mower according to the second embodiment of this application, as shown in the diagram. Figure 4As shown, the lawn mower in this embodiment is largely the same as that in the first embodiment, except that the connecting member 14 is different. The connecting member 14 includes a first part that is installed or connected to the main body and a second part that is installed or connected to the protective cover 13. In this embodiment, the connecting member 14 includes a compression spring 142. One end of the compression spring 142, i.e., the first part, is fixed to the second housing 122, and the other end of the compression spring 142, i.e., the second part, is fixed to the protective cover 13. When the protective cover 13 is not impacted, the compression spring 142 will keep the protective cover 13 in a normal working state due to its own elasticity. When the protective cover 13 is impacted and rotates around the pivot 15, the compression spring 142 is gradually compressed. At this time, the compression spring 142 gradually absorbs the impact energy, achieving the purpose of protecting the protective cover 13. When the impact force on the protective cover 13 disappears, the compression spring 142 restores its deformation and the protective cover 13 returns to its original position.

[0041] Third Embodiment

[0042] Figure 5 This is a side view of the lawn mower according to the third embodiment of this application, as shown in the diagram. Figure 5 As shown, the lawn mower in this embodiment is largely the same as the lawn mower in the above embodiment, except that the connecting member 14 is different. The connecting member 14 includes a biasing member connected between the first connecting platform and the second connecting platform. The biasing member includes a first part connected to the first connecting platform and a second part connected to the second connecting platform. In this embodiment, the biasing member is configured as a tension spring 143, with one end of the tension spring, i.e., the first part, connected to the first connecting platform 123, and the other end, i.e., the second part, connected to the second connecting platform 131. When the protective cover 13 is not impacted, the tension spring 143 will maintain the protective cover 13 in a normal working state due to its own elasticity; when the protective cover 13 is impacted and rotates around the rotating shaft 15, the tension spring 143 is gradually stretched. At this time, the tension spring 143 gradually absorbs the impact energy, achieving the purpose of protecting the protective cover 13; when the impact force on the protective cover 13 disappears, the tension spring 143 restores its deformation and the protective cover 13 returns to its original position.

[0043] Fourth embodiment

[0044] Figure 6 This is a side view of the lawn mower according to the fourth embodiment of this application, as shown in the diagram. Figure 6As shown, the lawn mower in this embodiment is largely the same as the lawn mower in the above embodiments, except that the connecting member 14 is different. The connecting member 14 includes a first part that is installed or connected to the main body and a second part that is installed or connected to the protective cover 13. In this embodiment, the connecting member 14 includes a first magnet 144 and a second magnet 145. The first magnet 144, i.e., the first part, is fixed to the second housing, and the second magnet 145, i.e., the second part, is fixed to the protective cover. The first magnet and the second magnet repel each other magnetically. When the shield 13 is not impacted, the magnetic forces of the first magnet 144 and the second magnet 145 repel each other, keeping the shield 13 in normal working condition. When the shield 13 is impacted and rotates around the shaft 15, the second magnet 145 gradually approaches the first magnet 144, and the magnetic forces of the two gradually increase, absorbing the impact energy and protecting the shield 13. When the impact force on the shield 13 disappears, the magnetic force of the repulsion between the first magnet 144 and the second magnet 145 drives the shield 13 to return to the first position.

[0045] Fifth Embodiment

[0046] Figure 7 This is a side view of the lawn mower according to the fifth embodiment of this application, as shown in the diagram. Figure 7 As shown, the lawn mower in this embodiment is largely the same as the lawn mower in the above embodiments, except that the connecting member 14 is different. The connecting member 14 includes a first part that is installed or connected to the main body and a second part that is installed or connected to the protective cover 13. In this embodiment, the connecting member 14 includes a third magnet 146 and a fourth magnet 147. The third magnet 146 is fixed to the first housing 121 or the first connecting platform 123 to form the first part, and the fourth magnet 147 is fixed to the protective cover 13 to form the second part. The third magnet 146 and the fourth magnet 147 are correspondingly arranged, and the third magnet 146 and the fourth magnet 147 are magnetically attracted to each other. When the protective cover 13 is not impacted, the magnetic forces of the third magnet 146 and the fourth magnet 147 attract each other, keeping the protective cover 13 in normal working condition. When the protective cover 13 is impacted and rotates around the shaft 15, the fourth magnet 147 gradually moves away from the third magnet 146, and the magnetic force between the two gradually decreases. In this process, the impact energy is absorbed, thus protecting the protective cover 13. When the impact force on the protective cover 13 disappears, the magnetic force of the attraction between the fourth magnet 147 and the third magnet 146 drives the protective cover 13 to reset.

[0047] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A lawn mower, comprising a body and a cover connected to the body, the cover being rotatably connected to the body between a first position and a second position, characterized in that, The lawn mower includes a connector connecting the body and the cover, the connector including a first portion mounted or connected to the body and a second portion mounted or connected to the cover, the first portion and the second portion cooperating to bias the cover to hold it in the first position.

2. The lawn mower as described in claim 1, characterized in that, The body includes a first connecting platform extending from its outer side wall, the cover includes a second connecting platform connected to the first connecting platform, and the connector includes a pivot rotatably connected between the first connecting platform and the second connecting platform.

3. The lawn mower as described in claim 2, characterized in that, The connector includes a biasing member connected between the first connecting platform and the second connecting platform, the biasing member including a first portion connected to the first connecting platform and a second portion connected to the second connecting platform.

4. The lawn mower as described in claim 3, characterized in that, The biasing component is configured as a torsion spring sleeved on the rotating shaft. The torsion spring has a first leg and a second leg at both ends. The first leg is connected to the first connecting platform, and the second leg is connected to the second connecting platform.

5. The lawn mower as described in claim 3, characterized in that, The biasing element is configured as a tension spring with one end connected to the first connecting platform and the other end connected to the second connecting platform.

6. The lawn mower according to claim 2, characterized in that: The body includes a head shell and a connecting rod connected to the head shell. The head shell includes a first housing for connecting a working component and a second housing for mounting the connecting rod. The second housing is connected to the side wall of the first housing.

7. The lawn mower according to claim 6, characterized in that: The first part is fixed to the second housing, and the second part is fixed to the protective cover. The first part and the second part constitute a first magnet and a second magnet that are respectively arranged. The first magnet and the second magnet are magnetically repelled; or, the first part and the second part constitute opposite ends of a compression spring.

8. The lawn mower as described in claim 6, characterized in that, The first connecting platform extends from the side wall of the first housing toward the protective cover. The connecting member includes a third magnet and a fourth magnet. The third magnet is fixed to the first housing or the first connecting platform to form the first part, and the fourth magnet is fixed to the protective cover to form the second part. The third magnet and the fourth magnet are correspondingly arranged and magnetically attracted to each other.

9. The lawn mower as described in claim 6, characterized in that, The first housing includes a limiting block for counteracting the biasing force of the connector, wherein when the shield is in the first position, the limiting block abuts against the side wall of the shield to hold the shield in the first position.

10. The lawn mower as described in claim 6, characterized in that, The lawn mower also includes a motor, a connecting rod, and a handle assembly housed in the first housing to drive the working components, one end of the connecting rod being connected to the second housing and the other end of the connecting rod being connected to the handle assembly.

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