Pole saw

A pole saw, including a cutting assembly and a support assembly. The cutting assembly includes a serrated cutter and a sheath rotatably connected thereto. The sheath is provided with a groove for accommodating the serrated cutter. The serrated cutter can rotate with respect to the sheath to move into or out of the groove to be sheathed or exposed. The sheath is detachably arranged on the support assembly.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of priority from Chinese Patent Application No. 202111347347.X, filed on Nov. 15, 2021. The content of the aforementioned applications, including any intervening amendments thereto, is incorporated herein by reference in its entirety.

TECHNICAL FIELD

This application relates to garden machinery, and more particularity to a pole saw.

BACKGROUND

A pole saw is designed for cutting high branches, and has been commonly used for pruning trees in the landscaping. With regard to the existing pole saw, a cutting assembly is fixed on a support assembly, rendering the existing pole saw large in length and inconvenient to carry.

SUMMARY

Accordingly, an object of the present disclosure is to provide a portable pole saw.

Technical solutions of the disclosure are described as follows.

This application provides a pole saw, comprising:a cutting assembly; anda support assembly;wherein the cutting assembly comprises a serrated cutter and a sheath; the serrated cutter is rotatably connected to the sheath; the sheath is provided with a first groove for accommodating the serrated cutter; the serrated cutter is configured to rotate with respect to the sheath to move into or out of the first groove so as to make the serrated cutter sheathed or exposed; and the sheath is detachably arranged on the support assembly.

In some embodiments, the pole saw further comprises a first locking structure; the first locking structure is arranged on the support assembly; and the first locking structure is configured to lock the sheath with respect to the support assembly.

In some embodiments, the first locking structure comprises a bearing part and a first locking part; the bearing part is arranged on the support assembly; the bearing part is provided with a second groove; the sheath is provided with a clamping portion; the second groove is configured to accommodate the clamping portion; a side wall of the clamping portion is provided with a third groove; the first locking part passes through the bearing part, and partially extends into the second groove; and the first locking part is configured to move close to or away from the clamping portion with respect to the bearing part so as to be clamped by the third groove or separated from the third groove, such that the sheath is locked by the first locking part or released.

In some embodiments, the first locking structure further comprises an adjustment part and a first elastic part; the adjustment part is rotatably arranged on the bearing part; the adjustment part is configured to abut against an end of the first locking part extending out of the second groove to drive the adjustment part to rotate with respect to the bearing part, such that the first locking part is pushed to move close to the clamping portion with respect to the bearing part to be clamped with the third groove; the first elastic part is sleeved outside the first locking part, and abuts elastically against the end of the first locking part extending out of the second groove; and the first elastic part is configured to provide an elastic force to drive the first locking part to move away from the clamping portion with respect to the bearing part, such that the first locking part is separated from the third groove.

In some embodiments, the cutting assembly further comprises a second locking structure; the second locking structure is arranged on the sheath; and the second locking structure is configured to lock the serrated cutter with respect to the sheath.

In some embodiments, the second locking structure comprises a second locking part; the second locking part is rotatably arranged on the sheath; the second locking part is provided with a butting end; the serrated cutter is provided with a fourth groove; and the second locking part is configured to be driven to rotate with respect to the sheath to drive the butting end to move close to or away from the serrated cutter to enable the butting end to be clamped with or separated from the fourth groove, such that the serrated cutter is locked by the second locking part or released.

In some embodiments, the support assembly comprises a support rod and a telescopic assembly; the support rod is connected to the telescopic assembly; the sheath is detachably arranged on the telescopic assembly; and the telescopic assembly is configured to extend and retract along an axial direction of the telescopic assembly to enable a setting position of the sheath to be adjustable along the axial direction of the telescopic assembly.

In some embodiments, the telescopic assembly comprises a fastening part and a telescopic rod; the fastening part is arranged on the telescopic rod; one end of the telescopic rod is connected to the support rod, and the other end of the telescopic rod is detachably connected to the sheath; the telescopic rod is configured to extend and retract along an axial direction of the telescopic rod to enable the setting position of the sheath to be adjustable along the axial direction of the telescopic rod; and the fastening part is configured to lock the telescopic rod at a preset length.

In some embodiments, the telescopic rod comprises a plurality of rods; the plurality of rods are sleevedly connected successively; one of the plurality of rods closest to the support rod is connected to the support rod; one of the plurality of rods farthest from the support rod is detachably connected to the sheath; one of two adjacent rods is capable of moving along an axial direction thereof with respect to the other of the two adjacent rods to enable the telescopic rod to extend or retract along the axial direction of the telescopic rod; the fastening part is arranged at a connection between two adjacent rods, and is configured to enable locking between the two adjacent rods, such that the telescopic rod is locked at the preset length.

In some embodiments, the fastening part is sleevedly provided outside one of the plurality of rods; the fastening part is provided with a locking piece; a side wall of each of the plurality of rods is provided with a locking hole; the locking hole is provided with a head end and a tail end opposite to each other; a depth of the head end is greater than a length of the locking piece; a depth of the tail end is less than the length of the locking piece; one of two adjacent rods is capable of moving along an axial direction thereof with respect to the other of the two adjacent rods, such that locking holes of the two adjacent rods are aligned or staggered; the fastening part is capable of rotating with respect to one of the plurality of rods connected to the fastening part to enable the locking piece to move into or out of the locking hole through the head end, such that the locking piece is clamped by the locking hole or separated from the locking hole to enable locking or unlocking between two adjacent rods of the plurality of rods; and the tail end is configured to resist the locking piece to limit a rotation of the locking piece in a direction close to the tail end of the locking hole.

Compared to the prior art, the present disclosure has the following beneficial effects.

The serrated cutter is capable of rotating with respect to the sheath to move out of the first groove, such that the serrated cutter is exposed. The user holds the support assembly, and manually pushes and pulls the support assembly, such that the serrated cutter is driven by the sheath to prune trees. When the pole saw is not in use, the serrated cutter is capable of rotating with respect to the sheath to move into the first groove to be sheathed, preventing the serrated cutter from hurting the user. Additionally, the cutting assembly can be detached from the support assembly when the pole saw is not in use or needs to be transported, reducing the space occupation and improving the portability.

The objectives, technical solutions and beneficial effects of the present disclosure will be further described below with reference to accompanying drawings and embodiments.

DETAILED DESCRIPTION OF EMBODIMENTS

Technical solutions of the present disclosure will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, described below are merely some embodiments of this disclosure, and are not intended to limit the disclosure. Other embodiments obtained by those skilled in the art based on the embodiments provided herein without paying any creative effort should fall within the scope of the present disclosure.

It should be noted that as used herein, directional indications, such as up, down, left, right, front and back, are merely intended to explain a relative positional relationship and movement between components in a specific posture, and if the specific posture changes, the directional indication changes accordingly. In addition, terms, such as “first” and “second”, are illustrative, and should not be understood as indicating or implying a relative importance or the number of elements. Elements defined with “first” and “second” may explicitly or implicitly include at least one of the element. Besides, the “and/or” used herein includes three solutions, for example, “A and/or B” includes A, B and a combination thereof. Additionally, technical solutions of various embodiments can be combined on the premise that the combined technical solution can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist, nor does it fall within the scope of the present disclosure.

As shown inFIG.1, a pole saw includes a cutting assembly100and a support assembly200. The cutting assembly100includes a serrated cutter110and a sheath120. The serrated cutter110is rotatably connected to the sheath120. The sheath120is provided with a first accommodating groove122for accommodating the serrated cutter110. The serrated cutter110is configured to rotate with respect to the sheath120to move into or move out of the first accommodating groove122so as to make the serrated cutter110sheathed or exposed. The sheath120is detachably arranged on the support assembly200.

Specifically, the serrated cutter110is capable of rotating with respect to the sheath120to move out of the first accommodating groove122, such that the serrated cutter110is exposed. The user holds the support assembly200, and manually pushes and pulls the support assembly200, such that the serrated cutter110is driven by the sheath120to prune trees. When the pole saw is not in use, the serrated cutter110is capable of rotating with respect to the sheath120to move into the first accommodating groove122to be sheathed, preventing the serrated cutter110from hurting the user. Additionally, the cutting assembly100can be detached from the support assembly200when the pole saw is not in use or needs to be transported, reducing the space occupation and improving the portability.

As shown inFIG.1, the pole saw further includes a first locking structure300. The first locking structure300is arranged on the support assembly200. The first locking structure300is configured to lock the sheath120with respect to the support assembly200. Specifically, when the sheath120is locked with respect to the support assembly200by the first locking structure300, enhancing the stability and reliability of the pole saw. The cutting assembly100can be detached from the support assembly200when the sheath120is released with respect to the support assembly200by the first locking structure300. Additionally, the cutting assembly100herein can be used independently.

As shown inFIGS.2-5, the first locking structure300includes a bearing part310and a first locking part330. The bearing part310is arranged on the support assembly200. The bearing part310is provided with a second accommodating groove311. The sheath120is provided with a clamping portion121. The second accommodating groove311is configured to accommodate the clamping portion121. A side wall of the clamping portion121is provided with a third accommodating groove1211. The first locking part330passes through the bearing part310, and partially extends into the second accommodating groove311. The first locking part330is configured to move close to or away from the clamping portion121with respect to the bearing part310so as to be clamped by the third accommodating groove1211or separated from the third accommodating groove1211, such that the sheath120is locked by the first locking part330or released. In this embodiment, the first locking part330is clamped by the third accommodating groove1211, such that the sheath120is locked by the first locking part330, preventing the sheath120from off the support assembly200. When the sheath120needs to be detached, the first locking part330is separated from the third accommodating groove1211, such that the sheath120is released by the first locking part330, and the sheath120can be detached from the support assembly200.

As shown inFIGS.3-5, a plurality of third grooves1211and a plurality of first locking parts330are provided. The plurality of third grooves1211and the plurality of first locking parts330are one-to-one correspondence, enhancing a reliability of locking the clamping portion121by the plurality of first locking parts330. In this embodiment, the number of the third grooves1211and the number of the first locking parts330both are two. The two third grooves1211and the two first locking parts330are one-to-one correspondence.

As shown inFIG.5, the first locking structure300further includes an adjustment part320and a first elastic part350. The adjustment part320is rotatably arranged on the bearing part310. The adjustment part320is configured to abut against an end of the first locking part330extending out of the second accommodating groove311to drive the adjustment part320to rotate with respect to the bearing part310, such that the first locking part330is pushed to move close to the clamping portion121with respect to the bearing part310to be clamped with the third accommodating groove1211, and the sheath120is locked by the first locking part330.

The first elastic part350is sleeved outside the first locking part330, and abuts elastically against the end of the first locking part330extending out of the second accommodating groove311. The first elastic part350is configured to provide an elastic force to drive the first locking part330to move away from the clamping portion121with respect to the bearing part310, such that the first locking part330is separated from the third accommodating groove1211. Specifically, when the adjustment component320is driven to rotate with respect to the bearing part310to push the first locking part330to move close to the clamping portion121with respect to the bearing part310, the elastic part350is compressed by the first locking part330. When the adjustment component320is driven to rotate reversely with respect to the bearing part310, the adjustment component320is driven to move away from the first locking part330with respect to the bearing part310, that is, the first locking part330is released by the adjustment component320, such that the first elastic part350rebounds to drive the first locking part330to be separated from the third accommodating groove1211, and the sheath120is released by the first locking part330. In this embodiment, the elastic part350is a spring.

As shown inFIG.5, an outside wall of the bearing part310is provided with a fourth accommodating groove312. The first locking part includes a main body331and an end332. The main body331passes through a footwall of the fourth accommodating groove312and extends into the second accommodating groove311. The end332is arranged at an end of the main body331which exposes to the second accommodating groove311. The first elastic part350is arranged in the fourth accommodating groove312. The first elastic part350is sleeved on the main body331. Two ends of the first elastic part350are pressed against to the footwall of the fourth accommodating groove312and the end332, respectively. Specifically, when the adjustment component320is driven to rotate with respect to the bearing part310to push the first locking part330to move close to the clamping portion121with respect to the bearing part310, a distance between the end332and the footwall of the fourth accommodating groove312gradually decreases, therefore the first elastic part350positioned between the end332and the footwall of the fourth accommodating groove312are gradually compressed.

As shown inFIG.5, the first locking structure300further includes a first rotating shaft340. The first rotating shaft340is arranged on the bearing part310. The adjustment component320is rotatably arranged on the first rotating shaft340. The adjustment component320is capable of rotating around an axis of the first rotating shaft340to drive the first locking part330to move close to the clamping portion121with respect to the bearing part310, such that the first locking part330is clamped to the third accommodating groove1211.

As shown inFIG.5, the adjustment component320includes an adjustment portion321. A distance between an outer of the adjustment portion321and the first rotating shaft340is gradually increased from one end of the adjustment portion321to the other end of the adjustment portion321. The adjustment component320is capable of rotating around the first rotating shaft340to enable different part of the adjustment portion321to abut against the first locking part330, such that a distance between the first locking part330and the first rotating shaft340gradually increases or decreases, therefore the first locking part330moves close to or away from the sheath120. Specifically, when one end of the adjustment portion321, of which the distance between an outer of the adjustment portion321and the first rotating shaft340is the smallest, abuts against the first locking part330, the first locking part330is separated from the sheath120. On the contrary, when the other end of the adjustment portion321, of which the distance between an outer of the adjustment portion321and the first rotating shaft340is the biggest, abuts against the first locking part330, the first locking part330is clamped with the sheath120.

As shown inFIG.1, the serrated cutter110is provided with a serrated blade111. Specifically, the serrated blade111is configured to prune trees reliably.

In an embodiment, the serrated cutter110is detachably connected to the sheath120. Specifically, the serrated cutter110is replaceable.

As shown inFIGS.3and6, the cutting assembly100further includes a second locking structure400. The second locking structure400is arranged on the sheath120. The second locking structure400is configured to lock the serrated cutter110with respect to the sheath120. Specifically, when the serrated cutter110is needed to be rotated with respect to the sheath120, the serrated cutter110is released by the second locking structure400. When the serrated cutter110rotates to a preset portion, the serrated cutter110is locked by the second locking structure400with respect to the sheath120.

As shown inFIG.6, the second locking structure400includes a second locking part420. The second locking part420is rotatably arranged on the sheath120. The second locking part420is provided with a butting end422. The serrated cutter110is provided with a clamping groove112. The second locking part420is configured to be driven to rotate with respect to the sheath120to drive the butting end422to move close to or away from the serrated cutter110to enable the butting end422to be clamped with or separated from to the clamping groove112, such that the serrated cutter110is clocked by the second locking part420or released.

As shown inFIG.6, the second locking structure400further includes a second rotating shaft410. The second rotating shaft410is arranged on the sheath120. The second locking part420is rotatably arranged on the second rotating shaft410. The second locking part420is configured to rotate around an axis of the second rotating shaft410to drive the butting end422to move close to or away from the serrated cutter110, such that the butting end422is clamped with or separated from the clamping groove112. In this embodiment, the second rotating shaft410is penetratedly arranged in the sheath120.

As shown inFIG.6, the second locking part420is further provided with a pressing end421. The pressing end421is arranged opposite to the butting end422. The second locking structure400further includes a second elastic part430. One end of the second elastic part430is connected to the sheath120, and the other end of the second elastic part430is connected to the pressing end421. The second locking structure400is configured to press against the pressing end421to drive the second locking part420to rotate around the axis of the second rotating shaft410to enable the butting end422to move close to the serrated cutter110, such that the butting end422is clamped with the clamping groove112, therefore the serrated cutter110is locked by the second locking part420. The pressing end is configured to be pressed to drive the second locking part420to rotate around the axis of the second rotating shaft410to enable the butting end422moving away from the serrated cutter110, such that the butting end422is separated from the clamping groove112, therefore the serrated cutter110is released by the second locking part420.

Specifically, the butting end422is clamped with the clamping groove112without an external force, and the serrated cutter110is locked and thus cannot rotate with respect to the sheath120. When the pressing end421is pressed, the second locking part420is driven to rotate around the second rotating shaft410to enable the butting end422moving away from the serrated cutter110, such that the butting end422is separated from the clamping groove112, therefore the serrated cutter110is released. In addition, when the pressing end421is pressed, the second elastic part430is compressed. Therefore, when the pressing end421is released, the second elastic part is configured to rebound to press against the pressing end421. As a consequence, the second locking part420is driven to rotate around the second rotating shaft410to enable the butting end422moving close to the serrated cutter110, such that the butting end422is clamped with the clamping groove112, therefore the serrated cutter110is locked again. In this embodiment, the second elastic part430is a spring.

As shown inFIG.6, the second clamping part includes a first clamping groove1121and a second clamping groove1122. The first clamping groove1121and the second clamping groove1122are positioned oppositely. The butting end422is capable of clamping with the first clamping groove1121or the second clamping groove1122to lock the serrated cutter110in a folding state or an opening state with respect to the sheath120. Specifically, when the butting end422is clamped with the first clamping groove1121or the second clamping groove1122, the serrated cutter110is capable of rotating with respect to the sheath120to enable the first clamping groove1121or the second clamping groove1122moving close to the butting end422. When the first clamping groove1121is clamped with the butting end422, the serrated cutter110is locked in the folding state. When the second clamping groove1122is clamped with the butting end422, the serrated cutter110is locked in the opening state.

As shown inFIG.6, the second locking structure400further includes a clamping shaft440. The clamping shaft440is connected to the butting end422. The butting end422is clamped with or separated from the clamping groove112through the clamping shaft440, such that the serrated cutter110is locked or released. In this embodiment, the clamping shaft440is capable of clamping with the first clamping groove1121or the second clamping groove1122to lock the serrated cutter110in the folding state or the opening state with respect to the sheath120.

As shown inFIGS.3and12, the cutting assembly100further includes a first baffle130and a second baffle140. The first baffle130and the second baffle140are arranged in the first accommodating groove122, oppositely. Two sides of the serrated cutter110are contacted with the first baffle130and the second baffle140, respectively. Specifically, the first baffle130and the second baffle140are contacted with the two sides of the serrated cutter110to press against and clamp the serrated cutter110, preventing the serrated cutter110from offsetting to the two sides.

As shown inFIGS.12and13, the first baffle130is provided with a first protrusion131. The first protrusion131is arranged at a side of the first baffle130which faces the serrated cutter110. The second baffle140is provided with a second protrusion141. The second protrusion141is arranged at a side of the second baffle140which faces the serrated cutter110. The two sides of the serrated cutter110are contacted with the first protrusion131and the second protrusion141, respectively. Specifically, the first protrusion131and the second protrusion141are contacted with the two sides of the serrated cutter110to press against and clamp the serrated cutter110, preventing the serrated cutter110from offsetting to the two sides. When the serrated cutter110rotates with respect to the sheath120to move into or out of the first accommodating groove122, a sliding friction is generated between the serrated cutter110and the first protrusion131and the second protrusion141to enable the serrated cutter110to move into or out of the sheath120normally.

As shown inFIGS.12and13, the first baffle130is further provided with a first flanged edge132. The first flanged edge132is formed by extending the first baffle130towards a direction close to the serrated cutter110. The first flanged edge132is connected to an end of the second elastic part430which is away from the pressing end421. Specifically, the second elastic part430is in face contact with the first flanged edge132to prevent the second elastic part430from being caught in a gap between the first flanged edge132and the second baffle140, enhancing a stability of the second elastic part430.

As shown inFIGS.12and13, the first baffle130is further provided with a second flanged edge133. The second flanged edge133is formed by extending the first baffle130towards a direction close to the serrated cutter110. The second flanged edge133is configured to press against a side of the serrated cutter110without the serrated blade111when the serrated cutter110is opened. Specifically, in one aspect, when the clamping shaft440is clamped with the second clamping groove1122, the second flanged edge133presses against the side of the serrated cutter110without the serrated blade111, such that the serrated cutter110is fixed by the second flanged edge133and the clamping shaft440simultaneously. In another aspect, when the serrated cutter110moves out of the first accommodating groove122by rotating with respect to the sheath120to enable the clamping shaft440to be separated from the first clamping groove1121, if the clamping shaft440fails to press against the second clamping groove1122in time, the second flanged edge133is capable of pressing against the side of the serrated cutter110without the serrated blade111to avoid an opening angle of the serrated cutter110is too large. When the second flanged edge133presses against the side of the serrated cutter110without the serrated blade111, the clamping shaft440is capable of pressing against the second clamping groove1122to lock the serrated cutter110.

As shown inFIGS.1and7, the support assembly200includes a support rod210and a telescoping assembly220. The support rod210is connected to the telescoping assembly220. The sheath120is detachably arranged on the telescoping assembly220. The telescoping assembly220is configured to extend and retract along an axial direction of the telescoping assembly220to enable a setting position of the sheath120to be adjustable along the axial direction of the telescoping assembly220. Specifically, the pole saw can prune trees of different heights conveniently by the telescoping assembly220. In this embodiment, the first locking structure300is arranged at an end of the telescoping assembly220which is away from the support rod210.

As shown inFIG.7, the telescoping assembly220includes a fastening part221and a telescopic rod222. The fastening part221is arranged on the telescopic rod222. One end of the telescoping assembly220is connected to the support rod210, and the other end of the telescoping assembly220is detachably connected to the sheath120. The telescopic rod222is configured to extend an retract along an axial direction of the telescopic rod222to enable the setting position of the sheath120to be adjustable along the axial direction of the telescopic rod222. The fastening part222is configured to lock the telescopic rod222at a preset length. Specifically, when the sheath120needs to be adjusted to a position, the fastening part221releases the telescopic rod222, and the telescopic rod222extends or retracts along the axial direction of the telescopic rod222to adjust setting position of the sheath120to the position. Then the fastening part221locks the telescopic rod222. In this embodiment, the telescopic rod222is connected to the sheath120through the first locking structure300.

As shown inFIG.7, the telescoping assembly220includes a plurality of rods2221. The plurality of rods2221sleevedly connected successively. One of the plurality of rods2221closest to the support rod210is connected to the support rod210. One of the plurality of rods2221farthest from the support rod210is detachably connected to the sheath120. One of two adjacent rods2221is capable of moving along an axial direction thereof with respect to the other of the two adjacent rods2221to enable the telescopic rod222to extend or retract along the axial direction of the telescopic rod222. The fastening part221is arranged at a connection between two adjacent rods2221, and is configured to enable locking between the two adjacent rods2221, such that the telescopic rod222is locked at the preset length. In this embodiment, the plurality of rods22212221are connected to the sheath120through the first locking structure300

As shown inFIGS.8and9, the fastening part221is sleevedly provided outside one of the plurality of rods2221. A side of the fastening part221facing the rods2221is provided with a fastening piece2211. A side wall of the rods2221is provided with a locking hole22211. The locking hole22211is provided with a head end222114and a tail end222115opposite to each other. A depth of the head end222114is greater than a length of the locking piece2211. A depth of the tail end222115is less than the length of the locking piece2211. One of two adjacent rods2221is capable of moving along an axial direction thereof with respect to the other of the two adjacent rods2221, such that the locking hole22211of the two adjacent rods2221are aligned or staggered. The fastening part221is capable of rotating with respect to the plurality of rods2221connected to the fastening part to enable the locking piece2211to move into or out of the locking hole22211through the head end222114, such that the locking piece2211is clamped by the locking hole22211or separated from the locking hole22211to enable locking or unlocking between two adjacent rods of the plurality of rods2221. The tail end222115is configured to resist the locking piece2211to limit a rotation of the locking piece2211in a direction close to the tail end222115of the locking hole22211. Specifically, when the locking holes22211of the two adjacent rods2221are aligned, the fastening part221is capable of rotating with respect to the plurality of rods2221connected to the fastening part to enable the locking piece2211to move into of the locking hole22211through the head end222114, such that the locking piece2211is clamped by the locking hole22211to enable locking between two adjacent rods of the plurality of rods2221. When the sheath120needs to be adjusted to a position, the fastening part221is capable of rotating reversely with respect to the plurality of rods2221connected to the fastening part to enable the locking piece2211to move out of the locking hole22211through the head end222114, such that the locking piece2211is separated from the locking hole22211to enable two adjacent rods of the plurality of rods2221to be released, and the sheath120can be adjusted to the position by adjusting the rods2221. In this embodiment, the length of the locking piece2211is a length of the locking piece2211in a radial direction of the rods2221.

As shown inFIG.8, the locking hole22211includes a first locking hole222111, a second locking hole222112and a third locking hole222113arranged spaced apart. One of the two adjacent rods2221is capable of moving along the axial direction thereof with respect to the other of the two adjacent rods2221to enable the second locking hole222112or the third locking hole222113of the one of the two adjacent rods2221to be aligned with the first locking hole222111of the other of the two adjacent rods2221. Specifically, when the third locking hole222113of the one of the two adjacent rods2221is aligned with the first locking hole222111of the other of the two adjacent rods2221, a length of the one of the two adjacent rods2221sleeved on the other of the two adjacent rods2221is the shortest, that is, the one of the two adjacent rods2221is in an extended state with respect to the other of the two adjacent rods2221. When the second locking hole222112of the one of the two adjacent rods2221is aligned with the first locking hole222111of the other of the two adjacent rods2221, a length of the one of the two adjacent rods2221sleeved on the other of the two adjacent rods2221is the largest, that is, the one of the two adjacent rods2221is in a retracted state with respect to the other of the two adjacent rods2221. In this embodiment, the first locking hole222111, the second locking hole222112and the third locking hole222113all are provided with the head end222114and the tail end222115opposite to each other.

As shown inFIG.8, the rods2221are each provided with a recess22212along the axial direction. A depth of the recess22212is greater than the length of the locking piece2211. A depth of a part of the rods2221without the recess22212is less than the length of the locking piece2211, such that the part of the rods2221without the recess22212is capable of limiting a rotation of the locking piece2211.

As shown inFIG.8, each of the rods2221is provided spaced apart with three recesses22212, which makes a cross section of the rod2221approximately triangular, enhancing the stability and reliability of the rods2221.

In an embodiment, the rods2221are made of a metal material.

As shown inFIG.8, the telescopic assembly220further includes a connecting sleeve assembly223. The fastening part221is arranged on the connecting sleeve assembly223. Two adjacent rods2221are connected sleevedly through the connecting sleeve assembly223. One of the two adjacent rods2221is movably sleeved inside the connecting sleeve assembly223, and the other of the two adjacent rods2221is fixedly sleeved on an outer periphery of the connecting sleeve assembly223. The rod2221movably sleeved inside the connecting sleeve assembly223is capable of moving along its axial direction with respect to the connecting sleeve assembly223to realize the movement of the one of the two adjacent rods2221with respect to the other of the two adjacent rods2221.

In an embodiment, the connecting sleeve assembly223is made of a plastic material, which contributes to the high processing precision of the connecting sleeve assembly223, such that the connecting sleeve assembly223can be reliably matched with the rods2221.

As shown inFIG.8, the connecting sleeve assembly223includes a first connecting sleeve2231and a second connecting sleeve2232. One of the two adjacent rods2221is movably sleeved inside the first connecting sleeve2231, and the other of the two adjacent rods2221is fixedly sleeved on the outer periphery of the first connecting sleeve2231. The second connecting sleeve2232is fixedly sleeved on the outer periphery of the other of the two adjacent rods2221. The fastening part221is arranged on the outer periphery of the second connecting sleeve2232.

As shown inFIG.8, an outer side wall of each of the rods2221is provided with an anti-off part500, which is configured to press against the connecting sleeve assembly223, such that the rods2221are prevented from falling off the connecting sleeve assembly223when moving relative to the connecting sleeve assembly223along its axial direction. In this embodiment, the anti-off part500is configured to press against the first connecting sleeve2231.

As shown inFIG.8, the rods2221are each provided with a third protrusion22213, which is configured to press against the anti-off part500to prevent the anti-off part500from falling off the rods2221.

As shown inFIGS.1and10, the sheath120is provided with a hanging part600which is configured to allow the sheath120to be hung on the support assembly200. In this embodiment, the hanging part600is configured to allow the sheath120to be hung on the support rod210.

As shown inFIG.2, the support assembly200is provided with a hanging sleeve700. The hanging part600can be hung on the hanging sleeve700to hang the sheath120on the support assembly200. Specifically, the hanging part600can be hung on the hanging sleeve700to facilitate the carrying of the cutting assembly100when the pole saw is not in use. In this embodiment, the hanging sleeve700is arranged on the support rod210.

In an embodiment, the hanging sleeve700is sleeved on the support rod210. Specifically, the hanging sleeve700is made of rubber.

As shown inFIG.11, an end of the support assembly200away from the cutting assembly100is provided with a hanging hole211. The hanging hole211is configured to hang a rope. Specifically, when the pole saw is in use, the support assembly200is held by a hand of the user, and the rope is sleeved on an arm of the user, such that the pole saw is prevented from falling off the user's hand. In this embodiment, the hanging hole211is located at an end of the support rod120away from the telescopic assembly220.

As shown inFIG.11, the hanging hole211does not extend out of an end surface of the support assembly200, such that the hanging hole211is prevented from being damaged. Specifically, the hanging hole211is embedded.

Mentioned above are merely preferred embodiments of this disclosure, and are not intended to limit the scope of the present disclosure. It should be understood that changes, modifications and replacements made by those killed in the art without departing from the spirit of this disclosure should fall within the scope of the present disclosure defined by the appended claims.