lawnmower with telescopic structure

Abstract

This utility model discloses a lawnmower with a telescopic structure, including a lawnmower and a first handle connected to the lawnmower; the first handle is provided with a second handle that can be telescopically extended; the second handle is provided with a sliding sleeve that is slidably connected to the first handle, and the sliding sleeve is provided with a locking pin; the first handle is provided with a locking hole group that cooperates with the locking pin in the axial direction, and the locking hole group is arranged in several groups around the circumference of the first handle; this utility model can drive the locking pin to disengage from the locking hole group by rotating the second grip, realizing quick unlocking with one hand, significantly simplifying the adjustment steps of the handle length and angle, and greatly improving the operating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, and in particular to lawnmowers with telescopic structures. Background Technology

[0002] Handheld lawnmowers (such as handheld brush cutters and lawn trimmers) are widely used for mowing lawns and shrubs in complex terrains such as courtyards, parks, and roadside edges due to their portability, flexibility, and ease of operation. These devices are typically equipped with a long handle to allow the operator to maintain a safe distance and maneuver the cutting head flexibly.

[0003] To accommodate the different heights and arm lengths of operators, as well as the varying operating environments (such as flat ground, slopes, and areas around obstacles) and the resulting control distance and posture, handle length adjustability has become a crucial design element. Currently, most mainstream handheld lawnmowers on the market employ a sliding telescopic adjustment mechanism to change the handle length.

[0004] However, existing sliding telescopic adjustment mechanisms have the following significant drawbacks:

[0005] Cumbersome and inefficient: This adjustment method typically relies on a screw-locking mechanism. When adjusting the handle length, the user must first manually loosen the screw (or other similar locking mechanism) before pushing, pulling, or extending the handle. After adjusting to the desired position, the screw must be tightened again to secure it. The entire process is multi-step and time-consuming, especially in complex work environments requiring frequent adjustments, making it extremely inconvenient and reducing work efficiency.

[0006] Furthermore, existing designs often overlook the fundamental impact of handle length adjustment on the overall grip posture. When the handle length changes, the operator's grip position (grip point) relative to the lawnmower's center of gravity and the lever arm of the cutting head also changes. This results in the adjusted grip point angle potentially not conforming to the natural wrist posture, forcing the operator's wrist into an awkward bent position, which can easily lead to wrist and arm fatigue or even strain during prolonged use. Utility Model Content

[0007] This invention addresses the shortcomings of existing technologies by providing a lawnmower handle structure that allows for quick adjustment of length and angle, is ergonomically designed, and supports folding for storage.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a lawnmower with a telescopic structure, including a lawnmower and a first handle connected to the lawnmower;

[0009] The first handle is provided with a second handle that can be extended or retracted.

[0010] The second handle is provided with a sliding sleeve that is slidably connected to the first handle, and the sliding sleeve is provided with a locking pin;

[0011] The first handle is provided with a locking hole group that cooperates with the locking pin in the axial direction, and the locking hole group is arranged in several groups around the circumference of the first handle.

[0012] In the above scheme, preferably, the first handle is provided with a sliding hole, and the second handle is slidably connected to the sliding hole.

[0013] In the above scheme, preferably, the first handle is provided with a first grip portion, the second handle is provided with a second grip portion, and the first grip portion and the second grip portion are arranged in a spatially staggered manner.

[0014] In the above scheme, preferably, the sliding sleeve is provided with symmetrical extension arms on both sides, and the second handle is provided with symmetrical rotating shafts that are rotatably connected to the extension arms; after the second handle slides away from the first handle, the two are separated, and after the second handle rotates through the rotating shaft, the first handle and the second handle are folded relative to each other.

[0015] In the above scheme, preferably, the locking pin is fixed in the second gripping part, and the first gripping part is rotatably disposed on the outer wall of the sliding sleeve;

[0016] The outer circumferential surface of the sliding sleeve has an arc-shaped surface on the first gripping part that fits against the outer wall of the sliding sleeve.

[0017] After the first gripping part rotates, the locking pin disengages from the locking hole assembly by misalignment between the arc-shaped surface and the circumferential surface of the outer wall of the sliding sleeve.

[0018] In the above scheme, preferably, the sliding sleeve is provided with a limiting sleeve, the first gripping part is provided with a movable cavity that cooperates with the limiting sleeve, and a locking spring is provided between the limiting sleeve and the first gripping part.

[0019] In the above scheme, preferably, the locking hole group includes a number of locking holes arranged at equal intervals, and the locking hole group is evenly arranged in 2-6 groups around the circumference of the first handle, thereby realizing the staggered angle between the first grip and the second grip in space.

[0020] In the above scheme, preferably, both the first gripping part and the second gripping part are provided with gripping surfaces for the operator to grip.

[0021] In the above scheme, preferably, a U-shaped groove is formed between the sliding sleeve and the extension arms on both sides, the distance from the rotating shaft to the end of the second handle is less than the height of the U-shaped groove, and the diameter of the second handle is less than the width of the U-shaped groove.

[0022] In the above solution, preferably, the outer surfaces of the first gripping part and the second gripping part are covered with a flexible material.

[0023] The beneficial effects of this utility model are: by rotating the second grip part, the locking pin can be driven to disengage from the locking hole group, realizing quick unlocking with one hand, significantly simplifying the adjustment steps of the handle length and angle, and greatly improving operating efficiency;

[0024] Furthermore, the staggered arrangement of the first and second grip sections optimizes the grip posture. Combined with the flexible material covering the surface and the non-slip grip surface, it effectively reduces wrist fatigue and improves ergonomics and operational comfort. The U-shaped groove and rotating shaft structure formed by the extension arm allow the second handle to be easily rotated and folded after being fully extended, significantly reducing the storage volume and facilitating storage and transportation. At the same time, the combination of multiple sets of circumferentially distributed locking holes and the preload provided by the locking spring ensures reliable locking of the locking pin during operation, effectively preventing accidental displacement and ensuring structural stability and safety of use. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is an exploded structural diagram of the present invention.

[0027] Figure 3 This is a three-dimensional structural diagram of the sliding sleeve of this utility model.

[0028] Figure 4 This is a schematic cross-sectional view of the sliding sleeve of this utility model.

[0029] Figure 5 This is a schematic diagram showing the disassembled structure of the sliding sleeve and the first gripping part of this utility model.

[0030] Figure 6 This utility model Figure 4 A magnified schematic diagram of the structure at point A in the middle. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1-6 .

[0032] A lawnmower with a telescopic structure includes a lawnmower 1 and a first handle 2 that is fixedly or adjustablely connected to it. The lower end of the first handle 2 is connected to the main body of the lawnmower 1, and the upper end is slidably connected to a second handle 3 that is axially telescopic. The second handle 3 is slidably connected to the first handle 2 through a sliding sleeve 301.

[0033] The second handle 3 has symmetrically arranged rotating shafts 305 on its rod body. The sliding sleeve 301 has symmetrically arranged upward-extending extension arms 304 connected to the rotating shafts 305 on both sides. A U-shaped groove is formed between the extension arms 304 and the end face of the sliding sleeve 301. Figure 3-5As shown. The sliding sleeve 301 is fitted onto the outer circular surface of the first handle 2, and its upper end is rotatably connected to the rotating shaft 305 through the extension arms 304 on both sides.

[0034] The first handle 2 has a sliding hole 202 at its center. The second handle 3 is slidably inserted through the sliding hole 202 at its end facing the first handle 2, enabling linear telescopic movement and ensuring displacement stability. The sliding sleeve 301 extends symmetrically on both sides to form U-shaped groove extension arms 304. The second handle 3 is hinged to the extension arms 304 via a rotating shaft 305. When the second handle 3 slides away from the first handle 2 until it is completely disengaged, it can be rotated and folded around the rotating shaft 305. The distance from the rotating shaft 305 to the end of the second handle 3 is less than the depth of the U-shaped groove, and the diameter of the second handle 3 is less than the width of the U-shaped groove, ensuring no structural interference during folding.

[0035] The sliding sleeve 301 is fitted with a locking pin 302. The first handle 2 is axially arranged with multiple sets of locking holes 201. Each set of locking holes consists of several locking holes 7 and is evenly arranged along the circumference of the first handle 2 (preferably 2-6 sets). The length and angle are synchronously fixed by the cooperation of the locking pin 302 with different locking holes 7.

[0036] The first handle 2 has a first grip portion 203 at its end, specifically, the first grip portion 203 is mounted on the sliding sleeve 301. The second handle 3 has a second grip portion 303 at its end. When the second handle 3 extends or retracts relative to the first handle 2, the first grip portion 203 slides synchronously with the sliding sleeve 301, and the axial distance between it and the second grip portion 303 remains constant. This allows the operator to comfortably grip both the first grip portion 203 and the second grip portion 303 to control the lawnmower. The two grip portions are also staggered to optimize the hand grip angle. The surface of the grip portion is covered with a flexible material (such as rubber or silicone) and has an anti-slip textured grip surface 8, thereby improving operating comfort.

[0037] The locking pin 302 is fixed inside the first grip 203, which is attached to the outer wall of the sliding sleeve 301 via the arc-shaped surface 306 and can rotate relative to it. When the first grip 203 is rotated, the arc-shaped surface 306 and the outer wall of the sliding sleeve 301 are circumferentially misaligned, driving the locking pin 302 to move radially and disengage from the locking hole 7, thereby disengaging the locking pin 302 from the locking hole 7. After disengagement, the second handle 3 can slide relative to the first handle 2 via the sliding sleeve 301.

[0038] The outer wall of the sliding sleeve 301 is fixed with a limiting sleeve 4 that cooperates with the first gripping part 203. Specifically, the first gripping part 203 has a movable cavity 5 to accommodate the limiting sleeve 4, and a limiting ring is provided at the end of the limiting sleeve 4. A locking spring 6 is installed between the limiting ring and the bottom of the movable cavity 5 of the first gripping part 203 near the sliding sleeve 301 to provide a reset force, ensuring that the locking pin 302 automatically engages with the locking hole 7 when not in operation. The locking pin 302 passes through the limiting sleeve 4 and the wall of the sliding sleeve 301. Figure 4 and Figure 6 As shown.

[0039] The method of using a lawnmower with a telescopic structure as described above:

[0040] Unlocking preparation:

[0041] Hold the first grip 203 with one hand and rotate it 25°-30° in the circumferential direction (the specific angle is determined by the design of the arc surface 306). At this time, the arc surface 306 of the first grip 203 and the outer wall of the sliding sleeve 301 are circumferentially misaligned. The misalignment force drives the internal locking pin 302 to radially exit the locking hole 7, releasing the length and angle lock.

[0042] Length / Angle Adjustment:

[0043] While keeping the first grip 203 in a rotating state, push and pull the second handle 3 axially along the sliding hole 202 of the first handle 2:

[0044] Length adjustment: Changes the extension / retraction position of the second handle 3;

[0045] Angle adjustment: By aligning the locking pin 302 with the locking hole group 201 at different circumferential positions (2-6 groups in total), the spatial staggered angle of the first grip part 203 and the second grip part 303 can be adapted.

[0046] Locking and fixing:

[0047] Release the first grip 203 and the locking spring 6 automatically resets: push the first grip 203 to rotate in the opposite direction to the initial position; the locking pin 302 is engaged in the target locking hole 7 under the action of the spring force, and the length and angle are synchronously fixed.

[0048] Foldable storage:

[0049] Pull the second handle 3 completely away from the first handle 2, so that it is disengaged from the sliding hole 202; hold the second handle 3 and rotate it 180° clockwise or counterclockwise around the rotation axis 305; utilize the spatial tolerance of the U-shaped groove structure (distance from the rotation axis 305 to the end < groove height, handle diameter < groove width) to rotate the second handle 3 relative to the first handle 2 at a certain angle to complete the folding and storage.

[0050] Expand for use:

[0051] Reverse the folding steps, rotate the second handle 3 to reset and insert it into the sliding hole 202, and the locking pin 302 will automatically engage with the locking hole 7.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lawnmower having a telescopic structure, characterised in that: Includes a lawnmower (1) and a first handle (2) connected to the lawnmower (1); The first handle (2) is provided with a second handle (3) that can be extended and retracted. The second handle (3) is provided with a sliding sleeve (301) that is slidably connected to the first handle (2), and the sliding sleeve (301) is provided with a locking pin (302). The first handle (2) is provided with a locking hole group (201) that cooperates with the locking pin (302) in the axial direction. The locking hole group (201) is arranged in several groups around the circumference of the first handle (2).

2. The lawn mower having a telescopic structure according to claim 1, characterized in that: The first handle (2) is provided with a sliding hole (202), and the second handle (3) is slidably connected to the sliding hole (202).

3. The lawnmower with a telescopic structure according to claim 1, characterized in that: The first handle (2) is provided with a first grip (203), and the second handle (3) is provided with a second grip (303). The first grip (203) and the second grip (303) are arranged in a spatially staggered manner.

4. The lawnmower with a telescopic structure according to claim 1, characterized in that: The sliding sleeve (301) is symmetrically provided with extension arms (304) on both sides, and the second handle (3) is symmetrically provided with a rotating shaft (305) that is rotatably connected to the extension arms (304); the second handle (3) slides away from the first handle (2) to separate the two, and the second handle (3) rotates through the rotating shaft (305) to realize the relative folding of the first handle (2) and the second handle (3).

5. The lawnmower with a telescopic structure according to claim 3, characterized in that: The locking pin (302) is fixed inside the first gripping part (203), and the first gripping part (203) is rotatably disposed on the outer wall of the sliding sleeve (301); The outer circumferential surface of the sliding sleeve (301) has an arc-shaped surface (306) on the first gripping part (203) that fits against the outer wall of the sliding sleeve (301). After the first gripping part (203) rotates, the locking pin (302) is disengaged from the locking hole group (201) by the misalignment of the arc-shaped surface (306) and the outer wall of the sliding sleeve (301).

6. The lawnmower with a telescopic structure according to claim 5, characterized in that: The sliding sleeve (301) is provided with a limiting sleeve (4), and the first gripping part (203) is provided with an active cavity (5) that cooperates with the limiting sleeve (4). A locking spring (6) is provided between the limiting sleeve (4) and the first gripping part (203).

7. The lawnmower with a telescopic structure according to claim 3, characterized in that: The locking hole group (201) includes a number of locking holes (7) arranged at equal intervals. The locking hole group (201) is evenly arranged in 2-6 groups around the circumference of the first handle (2), thereby realizing the staggered angle between the first grip (203) and the second grip (303) in space.

8. The lawnmower with a telescopic structure according to claim 3, characterized in that: Both the first gripping part (203) and the second gripping part (303) are provided with gripping surfaces (8) for operators to grip.

9. The lawnmower with a telescopic structure according to claim 4, characterized in that: A U-shaped groove is formed between the sliding sleeve (301) and the extension arms (304) on both sides. The distance from the rotating shaft (305) to the end of the second handle (3) is less than the height of the U-shaped groove, and the diameter of the second handle (3) is less than the width of the U-shaped groove.

10. The lawnmower with a telescopic structure according to claim 3, characterized in that: The first grip (203) and the second grip (303) are covered with a flexible material.

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