CN217722127U

CN217722127U - High branch saw

Info

Publication number: CN217722127U
Application number: CN202221488509.1U
Authority: CN
Inventors: 戴光前
Original assignee: Shaoxing Shangyu Guanye Electric Appliance Co ltd
Current assignee: Shaoxing Shangyu Guanye Electric Appliance Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-11-04
Anticipated expiration: 2032-06-14

Abstract

The utility model discloses a branches of tall trees saw, including cutting device, power supply unit, telescopic link, the telescopic link includes outer tube, inner tube, lock sleeve, driving piece, and inner tube week side is regular polygon, and the lock sleeve includes connecting portion, first extension, the second extension that fixed part, week side have the breach, and the inboard conflict of connecting portion is in inner tube week side and the breach corresponds the middle part of one of them side of inner tube. The utility model has the advantages of it is following and effect: when the telescopic link is adjusted telescopically, because of inner tube week side is regular polygon, the breach of the connecting portion of lock sleeve corresponds the middle part of one of them side of inner tube, orders about first extension and second extension at the driving piece this moment and is close to the back mutually, and a plurality of terminal surfaces of connecting portion inboard respectively with a plurality of terminal surfaces of inner tube week side counterbalance tightly, area of contact when through improving the fastening to increase the fastening and make frictional force, finally have good locking effect in flexible accommodation process.

Description

High branch saw

Technical Field

The utility model relates to a garden equipment field, in particular to branches of tall trees saw.

Background

The high branch saw is a high branch pruning saw, is a commonly used garden machine for pruning trees in landscaping, and has the main application fields of landscaping, yard maintenance, highway cleaning, forest fire prevention and the like.

Currently, pole saws include a cutting device having a blade chain, a power supply device having a battery pack, and a telescoping rod connected between the cutting device and the power supply device. The telescopic link is the telescopic link usually to the maximum height that realizes adjusting the branches of tall trees saw uses, and the locking structure of telescopic link for example at a plurality of screw thread pieces of outer tube end portion, threaded connection just make the screw thread piece compress tightly the thread bush of inner tube on a plurality of screw thread pieces, but this locking structure's locking effect is relatively poor, appears becoming flexible easily when using.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a branches of tall trees saw has good locking effect in flexible accommodation process.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a pole pruning saw, includes the cutting device who has the sword chain, has the power supply unit of battery package, connects the telescopic link between cutting device and power supply unit, the telescopic link includes that one end connects outer tube on power supply unit, one end connect on power supply unit and the other end is flexible to be set up the inner tube in the outer tube, set up at the locking sleeve of inner tube portion and cover, set up and sheathe in order to make the locking sleeve support tightly the driving piece that carries out locking in inner tube week side, inner tube week side is regular polygon, the locking sleeve including setting up at the fixed part of outer tube portion, integrative setting have the connecting portion of breach on the fixed part and week side, set up at the first extension of the breach one end of connecting portion, set up the second extension at the other end of the breach of connecting portion, the inboard conflict of connecting portion is in week side and the breach corresponds the middle part of one of inner tube side wherein, the driving piece sets up between first extension and second extension and orders about first extension and second extension and is close to, driving piece drive first extension and second extension and first extension and second extension are close to including the tight tube realization locking after driving piece drive first extension and second extension is close to the in-process messenger connecting portion and close to deformation.

The utility model discloses a further set up to: the driving piece comprises a rotating shaft with a third through hole in the middle, a handle, a screw and a nut which are rotatably arranged at two ends of the rotating shaft and provided with eccentric parts, the screw sequentially penetrates through the third through hole, the first through hole and the second through hole and then is in threaded connection with the nut, and in the rotating process of the handle, the eccentric parts of the handle gradually extrude the first extending part to enable the first extending part and the second extending part to be close to each other.

The utility model discloses a further set up to: the internal pipe all sides the dog-ear department be provided with along the fillet that its length direction extends, the inboard dog-ear department of connecting portion is provided with along its length direction extension's sunken mouth.

The utility model discloses a further set up to: the cutting device is provided with an extension pipe, and a quick connecting mechanism with a power-on function is arranged between the extension pipe and the inner pipe.

The utility model discloses a further set up to: the quick connection mechanism comprises a male terminal arranged at the end part of the extension pipe, a female terminal arranged at the end part of the inner pipe and butted with the male terminal, a pipe joint arranged at the end part of the extension pipe, a limiting sleeve arranged on the periphery of the inner pipe and butted against the pipe joint, and a threaded sleeve sleeved on the inner pipe and used for being in threaded connection with the pipe joint, wherein when the threaded sleeve is in threaded connection with the pipe joint, the threaded sleeve simultaneously drives the limiting sleeve to abut against the pipe joint tightly.

The utility model discloses a further set up to: the cutter chain of the cutting device faces one side and extends upwards in an inclined mode with the center line of the inner pipe as a limit, the oil pot of the cutting device faces the other side with the center line of the inner pipe as a limit, and the center of gravity of the cutting device is located on the center line of the inner pipe.

To sum up, the utility model discloses following beneficial effect has:

1. when the telescopic rod is telescopically adjusted, the periphery of the inner tube is in a regular polygon shape, the gap of the connecting part of the locking sleeve corresponds to the middle of one side face of the inner tube, and after the driving part drives the first extending part and the second extending part to be close to each other, a plurality of end faces on the inner side of the connecting part are respectively abutted against a plurality of end faces on the periphery of the inner tube, so that the friction force during fastening is increased by increasing the contact area during fastening, and finally, the telescopic rod has a good locking and anti-loosening effect during telescopic adjustment;

2. in the rotation process of the handle, the eccentric part of the handle gradually extrudes the first extension part to enable the first extension part and the second extension part to be close to each other, so that the inner side of the connecting part is abutted against the peripheral side of the inner pipe, and meanwhile, the deformation of the eccentric part on the adjusting handle when extruding the first extension part can be realized through adjusting the connecting position of the screw and the nut, so that the strength of the eccentric abutting is adjusted;

3. the fillet extending along the length direction of the inner tube is arranged at the corner on the peripheral side of the inner tube, the concave opening extending along the length direction of the inner side of the connecting part is arranged at the corner on the inner side of the connecting part, and after the contact between the corner on the peripheral side of the inner tube and the corner on the inner side of the connecting part is avoided, the contact areas of a plurality of end surfaces on the peripheral side of the inner tube and a plurality of end surfaces on the inner side of the connecting part can be further ensured, and the locking strength is improved;

4. the arrangement of the extension pipe can improve the maximum use length of the pole saw, and the quick connecting mechanism between the extension pipe and the inner pipe enables the extension pipe and the inner pipe to be connected in a butt joint mode and then powered on;

5. the cutter chain of the cutting device extends upwards in an inclined mode towards one side by taking the central line of the inner pipe as a boundary, the oil pot of the cutting device faces the other side by taking the central line of the inner pipe as a boundary, the gravity center of the cutting device is located on the central line of the inner pipe, the cutting device better accords with human use engineering at the moment, and the cutting device is more labor-saving and convenient when a pole pruning saw is used.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the locking sleeve and the driving member of the telescopic rod;

FIG. 3 is another schematic view of the structure of FIG. 2;

FIG. 4 is an exploded view of the extension tube, inner tube, and quick connect mechanism;

fig. 5 is a partial structural view at the cutting device.

Reference numerals are as follows: 1. a cutting device; 11. a cutter chain; 12. an oil can; 2. a power supply device; 21. a battery pack; 3. a telescopic rod; 31. an outer tube; 32. an inner tube; 321. round corners; 331. a fixed part; 332. a connecting portion; 3321. a notch; 3322. a recessed port; 333. a first extension portion; 334. a second extension portion; 341. a rotating shaft; 342. a handle; 3421. an eccentric portion; 343. a screw; 344. a nut; 4. an extension tube; 5. a quick connection mechanism; 51. a male terminal; 52. a female terminal; 53. a pipe joint; 54. a limiting sleeve; 55. and (4) a threaded sleeve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment is as follows: a pole pruning saw, as shown in figure 1, comprises a cutting device 1 with a cutter chain 11, a power supply device 2 with a battery pack 21, and a telescopic rod 3 connected between the cutting device 1 and the power supply device 2.

As shown in fig. 1 to 3, the telescopic rod 3 includes an outer tube 31 having one end connected to the power supply device 2, an inner tube 32 having one end connected to the power supply device 2 and the other end telescopically disposed in the outer tube 31, a locking sleeve disposed at the end of the outer tube 31 and sleeved on the inner tube 32, and a driving member disposed on the locking sleeve to make the locking sleeve tightly abut against the periphery of the inner tube 32 for locking.

As shown in fig. 1 to 3, the inner tube 32 is in a regular polygon shape on the peripheral side, the locking sleeve includes a fixing portion 331 disposed at the end of the outer tube 31, a connecting portion 332 integrally disposed on the fixing portion 331 and having a notch 3321 on the peripheral side, a first extending portion 333 disposed at one end of the notch 3321 of the connecting portion 332, and a second extending portion 334 disposed at the other end of the notch 3321 of the connecting portion 332, the inner side of the connecting portion 332 abuts against the peripheral side of the inner tube 32, and the notch 3321 corresponds to the middle of one side surface of the inner tube 32. The first extending part 333 is provided with a first through hole, the second extending part 334 is provided with a second through hole corresponding to the first through hole, the driving member comprises a rotating shaft 341 with a third through hole in the middle, a handle 342 rotatably arranged at two ends of the rotating shaft 341 and provided with an eccentric part 3421, a screw 343 and a nut 344, the screw 343 sequentially penetrates through the third through hole, the first through hole and the second through hole and then is in threaded connection with the nut 344, in the rotating process of the handle 342, the eccentric part 3421 of the handle 342 gradually extrudes the first extending part 333 to enable the first extending part 333 and the second extending part 334 to be close to each other, and the driving member drives the first extending part 333 and the second extending part 334 to enable the connecting part 332 to be tightly abutted to the peripheral side of the inner tube 32 after being deformed in the process of closing to achieve locking. Meanwhile, the corner of the inner tube 32 on the peripheral side is provided with a round corner 321 extending along the length direction thereof, and the corner of the inner side of the connecting part 332 is provided with a recessed port 3322 extending along the length direction thereof.

As shown in fig. 1 and 4, the cutting device 1 is provided with an extension pipe 4, and a quick connection mechanism 5 having a power-on function is provided between the extension pipe 4 and the inner pipe 32. The quick connection mechanism 5 includes a male terminal 51 disposed at an end of the extension pipe 4, a female terminal 52 disposed at an end of the inner pipe 32 and abutting against the male terminal 51, a pipe joint 53 disposed at an end of the extension pipe 4, a stop collar 54 disposed at a peripheral side of the inner pipe 32 and abutting against the pipe joint 53, and a threaded sleeve 55 disposed on the inner pipe 32 and screwed onto the pipe joint 53, wherein when the threaded sleeve 55 and the pipe joint 53 are screwed, the threaded sleeve 55 simultaneously drives the stop collar 54 to abut against the pipe joint 53.

As shown in fig. 1, 2 and 5, the cutter chain 11 of the cutting device 1 extends obliquely upward toward one side with the center line of the inner tube 32 as a boundary, the oil can 12 of the cutting device 1 faces toward the other side with the center line of the inner tube 32 as a boundary, and the center of gravity of the cutting device 1 is on the center line of the inner tube 32.

The implementation effect is as follows: when the telescopic rod 3 is telescopically adjusted, because the inner tube 32 is in a regular polygon shape on the periphery, the notch 3321 of the connecting part 332 of the locking sleeve corresponds to the middle of one side surface of the inner tube 32, at the moment, after the driving part drives the first extending part 333 and the second extending part 334 to be close to each other, a plurality of end surfaces on the inner side of the connecting part 332 respectively abut against a plurality of end surfaces on the periphery of the inner tube 32, the contact area is increased when the fastening is carried out, so that the friction force is increased through the fastening, and finally, the locking effect is good in the telescopic adjustment process. During the rotation of the handle 342, the eccentric portion 3421 of the handle 342 gradually presses the first extending portion 333 to make the first extending portion 333 and the second extending portion 334 approach each other, so as to achieve the effect of pressing the inner side of the connecting portion 332 against the peripheral side of the inner tube 32, and meanwhile, by adjusting the connecting position of the screw 343 and the nut 344, the deformation of the eccentric portion 3421 of the handle 342 when pressing the first extending portion 333 can be adjusted, thereby achieving the effect of adjusting the strength of the eccentric pressing.

The fillet 321 extending along the length direction is arranged at the corner on the peripheral side of the inner tube 32, the recess 3322 extending along the length direction is arranged at the corner on the inner side of the connecting part 332, and after the contact between the corner on the peripheral side of the inner tube 32 and the corner on the inner side of the connecting part 332 is avoided, the contact area of a plurality of end surfaces on the peripheral side of the inner tube 32 and a plurality of end surfaces on the inner side of the connecting part 332 can be further ensured, and the locking strength is improved. The arrangement of the extension pipe 4 can improve the maximum use length of the pole saw, and the quick connection mechanism 5 between the extension pipe 4 and the inner pipe 32 enables the extension pipe 4 and the inner pipe 32 to be connected in a butt joint mode and then powered on. The cutter chain 11 of the cutting device 1 extends upwards in an inclined mode towards one side with the central line of the inner pipe 32 as a limit, the oil pot 12 of the cutting device 1 faces the other side with the central line of the inner pipe 32 as a limit, the center of gravity of the cutting device 1 is located on the central line of the inner pipe 32, and therefore the cutting device better accords with human use engineering at the moment and is more labor-saving and convenient when a pole pruning saw is used.

The specific embodiments are only for explaining the present invention, and it is not a limitation to the present invention, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a branches of tall trees saw, includes cutting device (1) that has sword chain (11), power supply unit (2) that have battery package (21), connects telescopic link (3) between cutting device (1) and power supply unit (2), telescopic link (3) include that outer tube (31), one end of one end connection on power supply unit (2) are connected on power supply unit (2) and the other end is flexible to be set up inner tube (32) in outer tube (31), set up and establish the lock sleeve at outer tube (31) tip and cover and establish the lock sleeve at inner tube (32), set up and sheathe in at the lock so that the lock sleeve supports the driving piece that tightly goes on locking in inner tube (32) week side, its characterized in that: the peripheral side of the inner tube (32) is a regular polygon, the locking sleeve comprises a fixing part (331) arranged at the end part of the outer tube (31), a connecting part (332) integrally arranged on the fixing part (331) and provided with a notch (3321) on the peripheral side, a first extending part (333) arranged at one end of the notch (3321) of the connecting part (332), and a second extending part (334) arranged at the other end of the notch (3321) of the connecting part (332), wherein the inner side of the connecting part (332) is abutted against the peripheral side of the inner tube (32) and the notch (3321) corresponds to the middle of one side of the inner tube (32), the driving part is arranged between the first extending part (333) and the second extending part (334) and drives the first extending part (333) and the second extending part (334) to be close to each other, and the driving part drives the first extending part (333) and the second extending part (334) to deform and then abut against the inner tube (32) to realize locking in the process of approaching the first extending part (333) and the second extending part (334).

2. A pole saw as claimed in claim 1, wherein: the driving piece comprises a rotating shaft (341) with a third through hole in the middle, a handle (342) rotatably arranged at two ends of the rotating shaft (341) and provided with an eccentric part (3421), a screw (343) and a nut (344), wherein the screw (343) sequentially penetrates through the third through hole, the first through hole and the second through hole and then is in threaded connection with the nut (344), and in the rotating process of the handle (342), the eccentric part (3421) of the handle (342) gradually extrudes the first extending part (333) to enable the first extending part (333) and the second extending part (334) to be close to each other.

3. A pole saw as claimed in claim 2, wherein: the internal pipe (32) week side's dog-ear department is provided with fillet (321) that extends along its length direction, the inboard dog-ear department of connecting portion (332) is provided with along its length direction extension's sunken mouth (3322).

4. A pole saw as claimed in claim 1, wherein: the cutting device (1) is provided with an extension pipe (4), and a quick connecting mechanism (5) with a power-on function is arranged between the extension pipe (4) and the inner pipe (32).

5. A pole saw as claimed in claim 4, wherein: the quick connection mechanism (5) comprises a male terminal (51) arranged at the end part of an extension pipe (4), a female terminal (52) arranged at the end part of an inner pipe (32) and butted with the male terminal (51), a pipe joint (53) arranged at the end part of the extension pipe (4), a stop collar (54) arranged at the peripheral side of the inner pipe (32) and butted against the pipe joint (53), and a threaded sleeve (55) sleeved on the inner pipe (32) and used for being in threaded connection with the pipe joint (53), wherein when the threaded sleeve (55) is in threaded connection with the pipe joint (53), the threaded sleeve (55) simultaneously drives the stop collar (54) to be butted against the pipe joint (53).

6. A pole saw as claimed in claim 1, wherein: the utility model discloses a cutting device, including cutting device (1), the sword chain (11) of cutting device (1) are towards one side and slope upwards extends for the limit with interior pipe (32) central line, oilcan (12) of cutting device (1) are towards the opposite side with interior pipe (32) central line as the limit, the focus of cutting device (1) is on the central line of inner tube (32).