Quick release type lopper saw

Abstract

The utility model discloses a quick release type lopper saw, which relates to the field of garden pruning tools, and comprises a saw head part, a connecting part and a holding part, and the saw head part is used for extending to a high position to saw branches; the connecting part comprises a telescopic rod and a connecting piece arranged at one end of the telescopic rod, the connecting piece comprises a connecting head and a fixing sleeve piece, the fixing sleeve piece is arranged on the telescopic rod and comprises an inner sleeve with a cylindrical clamping head and an outer sleeve arranged on the outer side of the inner sleeve in a sliding mode, the connecting head is arranged at the tail end of the saw head part, and a groove matched with the cylindrical clamping head is formed in the outer side of the connecting head; the holding part is arranged at the other end of the telescopic rod and comprises a holding handle and a power source. According to the quick disassembly type lopper saw, the chain saw part of the lopper saw can be quickly disassembled and assembled, and time is saved.

Description

Technical Field

[0001] The utility model relates to the field of garden pruning tools, in particular to a quick-release high-branch saw. Background Art

[0002] High-branch saws are used to prune tree branches at high places and are one of the commonly used garden pruning tools. The disassembly and assembly of the chain saw part of common high-branch saws are rather troublesome. When connecting the connecting rod part, it is necessary to first align the holes of the connecting bolts and then tighten the bolts. The above process is slow to install and takes a long time. Summary of the Utility Model

[0003] In view of the above problems, the utility model provides a quick-release high-branch saw, which can realize the quick disassembly and assembly of the chain saw part of the high-branch saw and save time.

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

[0005] A quick-release high-branch saw, comprising:

[0006] A saw head for extending to a high place to saw branches;

[0007] A connecting part, including a telescopic rod and a connecting piece arranged at one end of the telescopic rod. The connecting piece includes a connecting head and a fixing kit. The fixing kit includes an inner sleeve and an outer sleeve. A clamping part hole is arranged on the top side wall of the inner sleeve. An elastic clamping part and two clamping plates are arranged in the clamping part hole. The elastic clamping part includes a columnar clamping head with a first extrusion edge arranged around its outer side and a first spring. The two clamping plates are respectively arranged on the inner and outer sides of the inner sleeve corresponding to the clamping part hole. A through hole for the columnar clamping head to pass through is arranged in the middle of the clamping plate. The first spring is sleeved on the outer side of the columnar clamping head and is located between one of the clamping plates and the first extrusion edge; an annular receiving groove is arranged on the inner side of the bottom of the outer sleeve. A second spring sleeved on the outer side of the inner sleeve is arranged in the receiving groove. A second extrusion edge is arranged on the outer side of the bottom of the inner sleeve. The two ends of the second spring are connected to the top side of the receiving groove and the second extrusion edge. The maximum compression distance of the second spring is greater than the distance from the bottom side of the columnar clamping head to the top end of the outer sleeve before the second spring is compressed; the connecting head is arranged at the tail end of the saw head, and a groove matching the columnar clamping head is arranged on its outer side;

[0008] A holding part arranged at the other end of the telescopic rod, including a handle and a power source.

[0009] In a further technical solution, the saw head includes a mounting plate, an oil tank, a motor, a working piece and a mounting shell. The oil tank and the motor are arranged on one side of the mounting plate. The working piece includes a saw chain, a strip-shaped support plate, a fixing piece and a sprocket. The machine shaft of the motor passes through the mounting plate to connect the sprocket. One end of the strip-shaped support plate is connected to the fixing piece. The saw chain is sleeved on the outer side of the sprocket of the support plate. The mounting shell is detachably arranged on the other side of the mounting plate.

[0010] In a further technical solution, strip-shaped connection ports and connection holes are respectively provided at one end of the strip-shaped support plate connected to the fixing member. The fixing member includes a fixing column connecting the connection hole and a connection column connecting the strip-shaped connection port. A threaded hole is provided in the middle of the connection column, and a mounting hole matching the threaded hole is provided on the mounting shell. A screw connecting the threaded hole is inserted into the mounting hole.

[0011] In a further technical solution, the cross-section of the connection head is rectangular, and the cross-section of the hollow part on the inner side of the inner sleeve is matched with the connection head.

[0012] In a further technical solution, the screw is a butterfly screw.

[0013] In a further technical solution, the power source is a detachable battery, and a battery compartment for installing the battery is provided at the bottom of the handle.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The connection part included in the high-branch saw can be used to install the saw head part and extend the saw head part to a high place for sawing branch operations. When the inner sleeve and the outer sleeve are in the initial state, the outer sleeve covers the outside of the cylindrical chuck, compressing the cylindrical chuck towards the inside of the inner sleeve. When installing the saw head part, only need to slide the outer sleeve outside the inner sleeve, so that the cylindrical chuck loses the pressure of the outer sleeve and protrudes towards the outside of the inner sleeve. At this time, the connection head at the tail end of the saw head part can be inserted into the inner sleeve. The groove of the connection head can position its cylindrical chuck, and then slide the outer sleeve back to its original position. The outer sleeve can re-squeeze the cylindrical chuck, and the cylindrical chuck can be snapped into the groove to lock the connection head. When disassembling the saw head part, it can also be achieved by sliding down the outer sleeve. The above disassembly and assembly methods are simple and fast, and take a short time;

[0016] 2. The connection head with a rectangular cross-section is provided, and the connection head is not easy to rotate relative to the inner sleeve, which is convenient for the cylindrical chuck in the inner sleeve to align with the groove on the connection head;

[0017] 3. The screw for installing the mounting shell adopts a butterfly screw, which is convenient for quickly manually rotating the butterfly screw to disassemble and assemble the mounting shell;

[0018] 4. The battery is provided with a detachable battery, which is convenient for disassembly and replacement at the battery compartment. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a quick-release high-branch saw according to an embodiment of the utility model;

[0020] Figure 2 is a schematic cross-sectional view of the connecting member according to an embodiment of the utility model;

[0021] Figure 3 isFigure 2 Enlarged schematic view of part A;

[0022] Figure 4 It is a disassembled schematic view of the saw head described in the embodiment of the present utility model;

[0023] Figure 5 It is a schematic view of removing the mounting shell from the saw head described in the embodiment of the present utility model.

[0024] Explanation of reference numerals:

[0025] 110, mounting plate; 111, positioning block; 120, fuel tank; 130, motor; 141, saw chain; 142, strip-shaped support plate; 143, fixing column; 144, connecting column; 145, sprocket; 150, mounting shell; 151, positioning chuck; 160, wing screw; 210, telescopic rod; 211, handle; 212, fixing buckle; 213, wire; 214, fixing bolt; 220, connector; 221, groove; 230, inner sleeve; 231, cylindrical chuck; 232, first extrusion edge; 233, first spring; 234, clamping plate; 235, second extrusion edge; 240, outer sleeve; 241, second spring; 310, handle; 311, button; 320, battery compartment. Detailed implementation manners

[0026] The embodiments of the present utility model will be further described below with reference to the accompanying drawings.

[0027] Embodiment:

[0028] As Figures 1-5As shown in the figure, a quick-release high-branch saw includes a saw head, a connecting part, and a holding part; the saw head is used to extend to a high place to saw branches, and includes a mounting plate 110, a fuel tank 120, a motor 130, a working piece, and a mounting shell 150. The fuel tank 120 and the motor 130 are arranged on the same side of the mounting plate 110, and the working piece is arranged on the other side of the mounting shell 150, and includes a saw chain 141, a strip-shaped support plate 142, a fixing piece, and a sprocket 145; the shaft of the motor 130 passes through the mounting plate 110 to connect the sprocket 145, and the strip-shaped support plate 142 is used to support the saw chain 141. A strip-shaped connection port with a length direction consistent with that of the strip-shaped support plate 142 is provided in the middle of one end of the strip-shaped support plate 142, and connection holes are arranged on the side of the strip-shaped connection port; the fixing piece is arranged on the mounting plate 110, and includes a fixing column 143 connecting the connection holes and a connecting column 144 connecting the strip-shaped connection port. The fixing column 143 is a structure with adjustable position in the prior art, and its purpose is to tension the saw chain 141 by adjusting and fixing its position after installing the saw chain 141; a threaded hole is provided in the middle of the connecting column 144, and a mounting hole matching the threaded hole is provided on the mounting shell 150. A screw connecting the threaded hole passes through the mounting hole. To facilitate the quick disassembly and assembly of this screw, a wing screw 160 can be selected, and a non-threaded connecting rod is provided at the bottom end of the wing screw 160. When installing the wing screw 160, a part of the connecting rod first enters the threaded hole, and when the threaded part of the wing screw 160 contacts the threaded hole, the wing screw 160 is rotated to tighten, reducing the number of times of rotating the wing screw 160; the saw chain 141 is sleeved outside the sprocket 145 of the support plate; the connecting part includes a telescopic rod 210 and a connecting piece arranged at one end of the telescopic rod 210. The connecting piece includes a connecting head 220 and a fixing kit. The fixing kit includes an inner sleeve 230 and an outer sleeve 240. A clamping part hole is provided on the top side wall of the inner sleeve 230. An elastic clamping part and two clamping plates 234 are arranged in the clamping part hole. The elastic clamping part includes a cylindrical clamping head 231 with a first extrusion edge 232 arranged around its outer side and a first spring 233. The two clamping plates 234 are respectively arranged on the inner and outer sides of the inner sleeve 230 corresponding to the clamping part hole. A through hole for the cylindrical clamping head 231 to pass through is provided in the middle of the clamping plate 234. The first spring 233 is sleeved outside the cylindrical clamping head 231 and is between the clamping plate 234 close to the inner side of the inner sleeve 230 and the first extrusion edge 232. One end of the cylindrical clamping head 231 close to the outer side of the inner sleeve 230 is an extrusion end, and the other end is a clamping end. Before the first spring 233 is compressed, the distance that the extrusion end of the cylindrical clamping head 231 protrudes from the inner sleeve 230 is greater than the gap distance between the inner sleeve 230 and the outer sleeve 240, and the clamping end of the cylindrical clamping head 231 is located in the clamping part hole. After the first spring 233 is compressed, the extrusion end of the cylindrical clamping head 231 abuts against the inner wall of the outer sleeve 230, and the clamping end of the cylindrical clamping head 231 protrudes relative to the inner wall of the inner sleeve 230, ensuring that when the first spring 233 is compressed, the cylindrical clamping head 231 can be clamped into the groove 221;An annular receiving groove is formed in the inner side of the bottom of the outer sleeve 240. A second spring 241 sleeved on the outer side of the inner sleeve 230 is arranged in the receiving groove. A second extrusion edge 235 is arranged on the outer side of the bottom of the inner sleeve 230. Two ends of the second spring 241 are connected to the top side of the receiving groove and the second extrusion edge 235. The maximum compression distance of the second spring 241 is greater than the distance from the bottom side of the cylindrical chuck 231 to the top end of the outer sleeve 240 before the second spring 241 is compressed, ensuring that when the outer sleeve 240 is pressed down, the cylindrical chuck 231 can be separated from the inner wall of the outer sleeve 240; the connecting head 220 is arranged at the tail end of the saw head part, and a groove 221 matching the cylindrical chuck 231 is arranged on the outer side thereof. One end of the cylindrical chuck 231 in contact with the outer sleeve 240 can be set to be hemispherical; the holding part is arranged at the other end of the telescopic rod 210 and includes a handle 310 and a power source. The power source is electrically connected to the motor 130.

[0029] The working principle of the above technical solution is as follows:

[0030] When disassembling the pole saw, the outer sleeve 240 can be directly moved in the direction of compressing the second spring 241, so that the cylindrical chuck 231 on the inner sleeve 230 is separated from the inner wall of the outer sleeve 240. After the cylindrical chuck 231 loses the extrusion of the outer sleeve 240, it protrudes outward from the inner sleeve 230 due to the elastic force of the first spring 233, so that the other end of the cylindrical chuck 231 is separated from the groove 221 of the connecting head 220 on the inner side of the inner sleeve 230, and then the whole saw head part can be removed. The installation principle is the same; when parts of the saw head part of the pole saw need to be disassembled and replaced, the installation shell 150 can be removed by rotating the butterfly screw 160, and the parts of the working piece can be disassembled and replaced.

[0031] In another embodiment, the cross-section of the connecting head 220 is rectangular, and the cross-section of the hollow part inside the inner sleeve 230 matches the connecting head 220. By setting the connecting head 220 with a rectangular cross-section, the connecting head 220 is not easy to rotate relative to the inner sleeve 230, which is convenient for the cylindrical chuck 231 inside the inner sleeve 230 to align with the groove 221 on the connecting head 220.

[0032] In another embodiment, as Figures 4-5 shown, a positioning block 111 with a positioning groove is arranged on the mounting plate 110, and a positioning chuck 151 is arranged at the position corresponding to the positioning block 111 on the installation shell 150. When installing the installation shell 150, the positioning chuck 151 can be clamped into the positioning groove of the positioning block 111, which is convenient for quickly positioning the position and direction of the installation shell 150.

[0033] In another embodiment, as Figure 1 shown, the telescopic rod 210 includes a fixed section and a telescopic section inside it. Two locking holes are formed on the fixed section, and fixing bolts 214 are arranged in the locking holes. Tightening the fixing bolts 214 can fix the telescopic section after it extends.

[0034] In another embodiment, as Figure 1 shown, a handle 215 may be provided on the fixed section of the telescopic rod 210 to facilitate the operation of the high-branch saw in cooperation with the handle 310.

[0035] In another embodiment, as Figure 1 shown, a battery compartment 320 is provided on the bottom side of the handle 310, and the power supply may be a detachable battery, which is arranged in the battery compartment 320. The battery is convenient for disassembly, replacement and charging, and a button 311 for turning on the power supply may be provided on the handle 310.

[0036] The above-described embodiments merely represent the specific implementation manners of the present invention, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A quick-detachable high-branch saw, characterized in that: include: Saw head, used to extend to high places to saw branches; The connecting part comprises a telescopic rod and a connecting piece arranged at one end of the telescopic rod, the connecting piece comprises a connecting head and a fixing kit, the fixing kit comprises an inner sleeve and an outer sleeve, a clamp hole is arranged on the top side wall of the inner sleeve, an elastic clamp and two clamp plates are arranged in the clamp hole, the elastic clamp comprises a cylindrical clamp head with a first extrusion edge around the outer side thereof and a first spring, the two clamp plates are respectively arranged on the inner and outer sides of the corresponding inner sleeve in the clamp hole, a through hole for the cylindrical clamp head to pass through is arranged in the middle of the clamp plate, and the first spring sleeve is provided On the outside of the cylindrical chuck and between one of the clamping plates and the first extrusion edge; an annular receiving groove is provided on the inner side of the bottom of the outer sleeve, and a second spring sleeved on the outside of the inner sleeve is arranged in the receiving groove, and a second extrusion edge is arranged on the outer side of the bottom of the inner sleeve, and two ends of the second spring are connected to the top side of the receiving groove and the second extrusion edge, and the maximum compression distance of the second spring is greater than the distance from the bottom side of the cylindrical chuck to the top end of the outer sleeve before the second spring is compressed; the connecting head is arranged at the tail end of the saw head, and a groove matching the cylindrical chuck is arranged on the outer side thereof; The gripping part is arranged at the other end of the telescopic rod and comprises a grip and a power source.

2. The quick-detachable high-branch saw according to claim 1, characterized in that: The saw head includes a mounting plate, an oil tank, a motor, a working part and a mounting shell, wherein the oil tank and the motor are arranged on one side of the mounting plate, and the working part includes a saw chain, a strip support plate, a fixing part and a sprocket, the shaft of the motor passes through the mounting plate to connect the sprocket, one end of the strip support plate is connected to the fixing part, the saw chain is sleeved on the outer side of the sprocket of the support plate, and the mounting shell is detachably arranged on the other side of the mounting plate.

3. The quick-detachable high-branch saw according to claim 2, characterized in that: The ends of the strip support plate connected to the fixing member are respectively provided with a strip connection port and a connection hole, the fixing member includes a fixing column connected to the connection hole and a connecting column connected to the strip connection port, a threaded hole is provided in the middle of the connecting column, a mounting hole matching the threaded hole is provided on the mounting shell, and a screw connecting the threaded hole is passed through the mounting hole.

4. The quick-detachable high-branch saw according to claim 1, characterized in that: The cross section of the connector is rectangular, and the cross section of the inner hollow portion of the inner sleeve matches the connector.

5. The quick-detachable high-branch saw according to claim 3, characterized in that: The screw is a butterfly screw.

6. The quick-detachable high-branch saw according to claim 1, characterized in that: The power source is a detachable battery, and a battery compartment for installing the battery is provided at the bottom of the handle.

Images