A wear sleeve for a hedge trimmer

Abstract

The utility model discloses a kind of hedge trimmer wear-resistant cover, be equipped on blade connecting rod, including collar and the lower ring of the bottom side edge of collar, blade connecting rod two ends are respectively equipped with eccentric shaft hole and connecting hole, collar is equipped in connecting hole, lower ring and blade connecting rod bottom side surface are in abutment.The utility model discloses a kind of hedge trimmer wear-resistant cover, wear-resistant collar is arranged in the connecting hole of blade connecting rod connecting blade, it is simple to replace and low in cost, improve the service life of blade connecting rod.

Description

Technical Field

[0001] This utility model relates to the field of hedge trimmers, and in particular to a wear-resistant sleeve for hedge trimmers. Background Technology

[0002] The operating principle of hedge trimmer blades is that an electric motor drives a gear, which in turn drives an eccentric shaft to rotate. A connecting rod on the eccentric shaft converts the rotational motion into the reciprocating motion of the blade. Specifically, the connecting rod on the eccentric shaft converts the rotational motion into reciprocating motion, and then, through the action of the guide groove and guide blade, the blade achieves linear reciprocating motion, thus completing the trimming of the hedge. In existing hedge trimmers, one end of the blade connecting rod is connected to the eccentric shaft via a bearing, and the other end is connected to the hedge trimmer blade via a blade pin. When the eccentric shaft rotates, it causes one end of the blade connecting rod to swing, and the other end of the blade connecting rod causes the hedge trimmer blade to move linearly. During this process, due to the swinging of the blade connecting rod, the force exerted by the blade pin on the pin hole is uneven. The blade connecting rod itself has insufficient wear resistance, and long-term use easily causes significant wear at the pin hole of the blade connecting rod, leading to structural instability, affecting the service life of the blade connecting rod, and affecting the normal operation of the hedge trimmer. Replacing the blade connecting rod separately is costly and urgently needs improvement. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a wear-resistant sleeve for a hedge trimmer. A wear-resistant collar is installed inside the connection hole of the blade connecting rod, which is simple to replace, low in cost, and improves the service life of the blade connecting rod.

[0004] The technical solution of this utility model is as follows:

[0005] A wear-resistant sleeve for a hedge trimmer is provided on a blade connecting rod, including a collar and a lower abutment ring provided on the bottom edge of the collar. The blade connecting rod has an eccentric shaft hole and a connecting hole at both ends, the collar is provided in the connecting hole, and the lower abutment ring abuts against the bottom side of the blade connecting rod.

[0006] In a further technical solution, the width of the collar is greater than the depth of the connecting hole, and when the lower abutment ring abuts against the bottom side of the blade connecting rod, the top side of the collar is higher than the top surface of the blade connecting rod.

[0007] In a further technical solution, the top edge of the collar is rounded, and the top edge of the lower abutment ring is rounded with the collar.

[0008] In a further technical solution, the collar and the connecting hole are transitionally fitted.

[0009] In a further technical solution, the top of the collar is detachably provided with a fixing cover, the bottom edge of the fixing cover is provided with an upper abutment ring that can abut against the top surface of the blade connecting rod, and the middle of the fixing cover is provided with a through hole, the diameter of which is larger than the inner diameter of the collar and aligned with the central axis of the collar.

[0010] In a further technical solution, the bottom surface of the upper abutment ring and the top surface of the lower abutment ring are respectively provided with friction texture.

[0011] In a further technical solution, the top surface of the collar is provided with a plurality of screw holes evenly distributed, the fixing cover is provided with a connecting hole corresponding to the screw holes, and a screw for connecting the screw hole is inserted through the connecting hole.

[0012] In a further technical solution, the collar is made of highly wear-resistant engineering plastic or alloy steel.

[0013] The beneficial effects of this utility model are:

[0014] 1. The collar is set inside the connecting hole, which replaces the connecting hole in bearing the force from the blade pin. The blade connecting rod is not easy to wear. The lower abutment ring on the bottom edge of the collar can limit the collar. The collar is not easy to detach from the connecting hole. If the collar wears out after long-term use and affects the normal use of the hedge trimmer, it can be easily disassembled and replaced. Compared with directly replacing the blade connecting rod, the cost is lower.

[0015] 2. The upper abutment ring of the fixed cover can cooperate with the lower abutment ring on the collar to clamp the blade connecting rod, further preventing the collar from dislodging from the connecting hole. The clamping surfaces of the upper and lower abutment rings can increase the friction on the upper and lower surfaces of the blade connecting rod, making it less likely for the collar to rotate relative to the connecting hole, thus making the installation more stable. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of the installation of the wear-resistant sleeve of the hedge trimmer according to an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the collar described in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the blade connecting rod according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the connection of the blade connecting rod according to an embodiment of the present utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 10. Collar; 11. Lower abutment ring; 12. Screw hole; 20. Blade connecting rod; 21. Eccentric shaft hole; 22. Connecting hole; 30. Gear mechanism; 31. Eccentric shaft; 40. Blade; 50. Fixing cover; 51. Upper abutment ring; 52. Through hole; 53. Screw. Detailed Implementation

[0022] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0023] Example:

[0024] like Figures 1-4 As shown, a wear-resistant sleeve for a hedge trimmer is provided on a blade connecting rod 20, including a collar 10 and a lower abutment ring 11 located on the bottom edge of the collar 10. The blade connecting rod 20 has an eccentric shaft hole 21 and a connecting hole 22 at both ends. The collar 10 is located within the connecting hole 22, with a transition fit between the collar 10 and the connecting hole 22. The lower abutment ring 11 abuts against the bottom side of the blade connecting rod 20. To facilitate disassembly of the collar 10, the width of the collar 10 is greater than the depth of the connecting hole 22. When the lower abutment ring 11 abuts against the bottom side of the blade connecting rod 20, the collar 10... The top side of the collar 10 is higher than the top surface of the blade connecting rod 20, and the height difference can be 1-2mm. When disassembling the collar 10, any tool can be used to gently tap the part of the collar 10 that is higher than the blade connecting rod 20, so that the lower abutment ring 11 is separated from the bottom side of the blade connecting rod 20, making it convenient for the operator to hold the lower bottom ring and twist the collar 10 to gradually remove the collar 10. The top edge of the collar 10 is rounded, and the top edge of the lower abutment ring 11 and the collar 10 are rounded. The bottom edge of the connecting hole 22 of the blade connecting rod 20 can be flattened to facilitate the insertion of the collar 10 into the connecting hole 22.

[0025] In this embodiment, the collar 10 is made of high wear-resistant engineering plastic or alloy steel, preferably polyurethane, carburized steel or bearing steel.

[0026] The working principle of the above technical solution is as follows:

[0027] The eccentric shaft hole 21 of the blade connecting rod 20 is connected to the eccentric shaft 31 on the gear mechanism 30 of the hedge trimmer. The collar 10 of the blade connecting rod 20 is set in the connecting hole 22. The collar 10 is sleeved on the outside of the blade pin of the connecting blade 40, and takes the force from the blade pin instead of the connecting hole 22. The blade connecting rod 20 is not easy to wear. The lower abutment ring 11 on the bottom edge of the collar 10 can limit the collar 10. The collar 10 is not easy to fall out of the connecting hole 22. If the collar 10 wears out after long-term use and affects the normal use of the hedge trimmer, it can be easily disassembled and replaced. Compared with directly replacing the blade connecting rod 20, the cost is lower.

[0028] In another embodiment, such as Figure 1 As shown, the top of the collar 10 is detachably provided with a fixing cover 50. The bottom edge of the fixing cover 50 is provided with an upper abutment ring 51 that can abut against the top surface of the blade connecting rod 20. The middle part of the fixing cover 50 is provided with a through hole 52. In order to facilitate the collar 10 to pass through, the diameter of the through hole 52 is larger than the inner diameter of the collar 10 and is aligned with the central axis of the collar 10. The bottom surface of the upper abutment ring 51 and the top surface of the lower abutment ring 11 are respectively provided with friction texture.

[0029] The upper abutment ring 51 of the fixed cover 50 can cooperate with the lower abutment ring 11 on the collar 10 to clamp the blade connecting rod 20, further preventing the collar 10 from disengaging from the connecting hole 22. Moreover, the clamping surfaces of the upper abutment ring 51 and the lower abutment ring 11 can increase the friction on the upper and lower surfaces of the blade connecting rod 20, making it less likely for the collar 10 to rotate relative to the connecting hole 22, thus making the installation more stable.

[0030] In another embodiment, such as Figure 1-2 As shown, the top surface of the collar 10 is provided with a plurality of screw holes 12, which can be 3-4. The fixing cover 50 is provided with a connecting hole 22 corresponding to the screw hole 12, and a screw 53 for connecting the screw hole 12 is inserted through the connecting hole 22.

[0031] The fixed cover 50 is easy to disassemble relative to the collar 10.

[0032] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A wear-resistant sleeve for a hedge trimmer, mounted on the blade connecting rod, characterized in that, It includes a collar and a lower abutment ring located on the bottom edge of the collar. The blade connecting rod has an eccentric shaft hole and a connecting hole at both ends. The collar is located in the connecting hole, and the lower abutment ring abuts against the bottom side of the blade connecting rod.

2. The wear-resistant sleeve for a hedge trimmer according to claim 1, characterized in that, The width of the collar is greater than the depth of the connecting hole. When the lower abutment ring abuts against the bottom side of the blade connecting rod, the top side of the collar is higher than the top surface of the blade connecting rod.

3. The wear-resistant sleeve for a hedge trimmer according to claim 2, characterized in that, The top edge of the collar is rounded, and the top edge of the lower abutment ring is rounded with the collar.

4. The wear-resistant sleeve for a hedge trimmer according to claim 3, characterized in that, The collar and the connecting hole are fitted together.

5. The wear-resistant sleeve for the hedge trimmer according to claim 2, characterized in that, The top of the collar is detachably provided with a fixing cover. The bottom edge of the fixing cover is provided with an upper abutment ring that can abut against the top surface of the blade connecting rod. The middle of the fixing cover is provided with a through hole. The diameter of the through hole is larger than the inner diameter of the collar and is aligned with the central axis of the collar.

6. The wear-resistant sleeve for a hedge trimmer according to claim 5, characterized in that, The bottom surface of the upper abutment ring and the top surface of the lower abutment ring are respectively provided with friction texture.

7. The wear-resistant sleeve for a hedge trimmer according to claim 5, characterized in that, The top surface of the collar is provided with a plurality of screw holes evenly distributed, and the fixing cover is provided with a connecting hole corresponding to the screw hole, and a screw for connecting the screw hole is inserted through the connecting hole.

8. The wear-resistant sleeve for a hedge trimmer according to claim 1, characterized in that, The collar is made of highly wear-resistant engineering plastic or alloy steel.

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