Electric saw for pruning high branches

Abstract

The utility model discloses an electric saw for pruning high branches, which comprises an electric saw body and a telescopic rod, the electric saw body is provided with a shell I, the telescopic rod is provided with a mounting end, the mounting end of the telescopic rod is provided with a quick-release component, the quick-release component comprises a shell II and a self-locking component, the shell II is provided with a positioning bulge with a T-shaped cross section, and the self-locking component is arranged on the shell II. The self-locking assembly comprises a rotary knob, a torsional spring and a lock head, the shell I is provided with a positioning sliding groove corresponding to the positioning protrusion and a lock groove corresponding to the lock head, the telescopic rod is embedded into the positioning sliding groove through the positioning protrusion, and the lock head is embedded into the lock groove to be movably connected with the electric saw body. According to the electric saw for high branch pruning, the quick dismounting structure is arranged between the electric saw body and the telescopic rod, so that quick dismounting operation between the electric saw body and the telescopic rod is achieved, the requirement for high branch pruning operation is met, and the requirement for low-position pruning operation can be conveniently met in a time-saving and labor-saving mode.

Description

Technical Field

[0001] The utility model relates to a handheld gardening tool, in particular to an electric saw for high branch pruning. Background Art

[0002] In gardening operations, branches that are slightly higher than the human body are pruned. This height operation is special because the operation height is higher than the human body. Although handheld gardening tools can be extended into the operation range, the gardener needs to lift the tool above his head, which is equivalent to lifting a heavy object. In addition, the operator needs to look up at a large angle to observe, which will cause the operator to consume a lot of physical strength due to lifting weights and looking up. In order to avoid the operator looking up at a large angle, the prior art provides a gardening tool suitable for such an operation environment, namely, a high-branch pruning electric saw. The biggest structural feature of the high-branch pruning electric saw is that it has a telescopic rod that can be extended or shortened. The part that cuts off the branches in the high-branch pruning electric saw is the electric saw body, which is fixed to the telescopic rod by fasteners such as a clamp. Although the needs of pruning high branches are met, the defect that the telescopic rod and the electric saw body are not easy to disassemble and assemble leads to the time-consuming and laborious disassembly of the telescopic rod when this type of high-branch pruning electric saw is used for pruning operations at low places. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to quickly and conveniently disassemble the telescopic rod and the electric saw body, thereby obtaining an electric saw for high branch pruning that is convenient and flexible to use.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: the electric saw for high branch pruning includes an electric saw body and a telescopic rod, the electric saw body is provided with a shell I, the telescopic rod is provided with a mounting end, the shell I is movably connected to the mounting end, the telescopic rod is provided with a quick-release component at the mounting end, the quick-release component includes a shell II and a self-locking component, the shell II is provided with a positioning protrusion with a T-shaped cross section, the self-locking component includes a knob, a torsion spring, and a lock head, the knob is provided with a handle and a transmission rod, the handle is located at one end of the transmission rod, the handle is connected to the transmission rod as a whole, the transmission rod is movably installed on the shell II, the handle is located outside the shell II, the other end of the transmission rod is provided with an eccentric part, and the The eccentric part is located inside the shell II, the transmission rod passes through the torsion spring and the transmission rod is connected to the torsion spring, the torsion spring is connected to the shell II, the lock head is movably mounted on the shell II in a linear sliding manner, the lock head is provided with a guide slot corresponding to the eccentric part, the eccentric part of the transmission rod is embedded in the guide slot, the knob drives the lock head to move by swinging the eccentric part relative to the center line of the transmission rod, the torsion spring drives the transmission rod to move to maintain one end of the lock head protruding from the surface of the positioning protrusion, the shell I is provided with a positioning slot corresponding to the positioning protrusion and a lock slot corresponding to the lock head, the telescopic rod is embedded in the positioning slot through the positioning protrusion and the lock head is embedded in the lock slot to be movably connected with the electric saw body.

[0005] A quick-release structure is constructed between the electric saw body and the telescopic rod, which can realize the quick docking and quick separation of the electric saw body and the telescopic rod manually. The quick-release structure consists of a quick-release component and a positioning slide and a lock groove located on the outer shell I. The positioning protrusion and the lock head provided on the quick-release component, when the positioning protrusion is embedded in the positioning slide groove and the lock head is also embedded in the lock groove, the direction of movement restriction of the positioning protrusion is perpendicular to the direction of movement restriction of the lock head, thereby ensuring that the electric saw body and the telescopic rod cannot be separated from each other in any direction after being combined. When the lock head exits the lock groove, the positioning protrusion is allowed to leave the positioning slide groove, and the electric saw body and the telescopic rod can be separated at this time.

[0006] The initial state of the lock is set to protrude from the surface of the positioning protrusion by the torsion spring, and the lock can only be retracted into the housing II by turning the knob. Such a design can fully ensure that the quick-release structure responds first to the operation requirements of combining the electric saw body and the telescopic rod, and the quick-release structure can only passively respond to the operation requirements of separating the electric saw body and the telescopic rod. This can greatly ensure the safety of the use of the high-branch pruning electric saw.

[0007] Since the operation is performed at a height, the positioning slide groove is arranged at the end of the electric saw body where the hand-held structure is arranged, so that a longer overall structure can be obtained after the electric saw body is combined with the telescopic rod, further meeting the requirements of high branch pruning operations.

[0008] The housing II is provided with a through hole corresponding to the lock. Since the thickness of the end of the lock protruding from the positioning protrusion surface is less than the thickness of other parts of the lock, the width of the through hole corresponds to the thickness of the end of the lock protruding from the positioning protrusion surface, so the height of the lock protruding from the housing II is limited; in addition, the end of the lock protruding from the positioning protrusion surface is provided with a guide surface, and the guide surface is inclined to the sliding direction of the lock. This design can prompt the lock to respond to the operation requirements of the electric saw body and the telescopic rod being combined, but not to the operation requirements of the electric saw body and the telescopic rod being separated, forming an operation mechanism with small combination resistance and large separation resistance, thereby further ensuring the safety of the use of the electric saw for high branch pruning.

[0009] The safety of using the electric saw for high branch pruning can be improved by maintaining the combined state of the electric saw body and the telescopic rod and promoting the stability of the combined state. Therefore, in the technical solution, the swing range of the handle intersects with the extension direction of the positioning protrusion. When the lock head is embedded in the lock groove, one end of the housing I must be blocked by the handle. When the positioning protrusion is extended out of the positioning groove, it is blocked not only by the lock head but also by the handle, so that the combined state is doubly guaranteed.

[0010] The utility model adopts the above technical solution: the electric saw for high branch pruning realizes the rapid disassembly and assembly operation between the electric saw body and the telescopic rod by arranging a quick-release structure between the electric saw body and the telescopic rod, which not only meets the requirements of pruning high branches, but also can conveniently meet the requirements of pruning operations at lower positions in a time-saving and labor-saving manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0012] Figure 1 It is a three-dimensional diagram of an electric saw for high branch pruning according to the utility model;

[0013] Figure 2 It is a three-dimensional diagram of the electric saw body of the electric saw for high branch pruning of the utility model;

[0014] Figure 3 It is a schematic structural diagram of a quick-release component of an electric saw for high branch pruning in the utility model in an initial state;

[0015] Figure 4 It is a schematic diagram of the structure of a high-branch pruning electric saw in a disassembled and assembled state of quick-detachable parts of the utility model;

[0016] Figure 5 It is a structural schematic diagram of a self-locking assembly of a quick-release component of an electric saw for high branch pruning according to the utility model;

[0017] Figure 6 The utility model is a schematic structural diagram of a knob of a quick-release component of an electric saw for high branch pruning. DETAILED DESCRIPTION

[0018] like Figure 1 , 2 As shown in , 3, 4, 5, and 6, the electric saw for high branch pruning includes an electric saw body and a telescopic rod 2.

[0019] The electric saw body is provided with a housing Ⅰ1, a chain saw and a power mechanism for driving the chain saw, and the chain saw and the power mechanism for driving the chain saw are both mounted on the housing Ⅰ1. The chain saw is located at one end of the housing Ⅰ1, and a hand-held structure is provided at the other end of the housing Ⅰ1 for easy hand-holding.

[0020] One end of the telescopic rod 2 is a hand-held end, and the other end is a mounting end. The hand-held end is used for the operator to hold, and the mounting end is used to be movably connected to the shell Ⅰ1 of the electric saw body. The telescopic rod 2 is provided with a quick-release component at the mounting end, and the quick-release component includes a shell Ⅱ3 and a self-locking component. The shell Ⅱ3 is provided with a positioning protrusion 4 with a T-shaped cross-section, one end of the positioning protrusion 4 is a free end, and the other end is a restricted end. The shell Ⅱ3 forms a protrusion at the restricted end of the positioning protrusion 4, and the shell Ⅱ3 does not form a protrusion at the free end of the positioning protrusion 4. The self-locking component includes a knob 5, a torsion spring 6, and a lock head 7. The knob 5 is provided with a handle 8 and a transmission rod 9. The handle 8 is a long strip structure as a whole. The transmission rod 9 is a cylindrical structure as a whole. One end of the transmission rod 9 is connected to the handle 8 as a whole. The other end of the transmission rod 9 is an eccentric part 10 of the eccentric structure. After installation, the transmission rod 9 is movably connected to the shell II3 and the transmission rod 9 can rotate around the center line of the transmission rod 9 on the shell II3. The transmission rod 9 passes through the torsion spring 6 and the transmission rod 9 is connected to the torsion spring 6. The torsion spring 6 is sleeved outside the transmission rod 9. One end of the torsion spring 6 is embedded in the transmission rod 9 and the other end of the torsion spring 6 is connected to the shell II3. The torsion spring 6 acts on the transmission rod 9 to promote the rotation rod to maintain a certain angle. The lock head 7 is a flat structure as a whole. The lock head 7 is movably installed on the shell II3 in a linear sliding manner. The lock head 7 is located in the extension direction of the transmission rod 9. The lock head 7 is provided with a guide slot 11 corresponding to the eccentric part 10. The eccentric part 10 on the lock head 7 is embedded in the guide slot 11. The knob 5 can drive the lock head 7 to move by swinging the eccentric part 10 relative to the center line of the transmission rod 9. The sliding direction of the lock 7 is perpendicular to the center line of the transmission rod 9; after installation, the handle 8 is located outside the shell II3, and the eccentric part 10 is located inside the shell II3. The lock 7 can be located in the shell II3 as a whole, or only one end can protrude from the surface of the positioning protrusion 4. Due to the effect of the torsion spring 6, the transmission rod 9 will drive the eccentric part 10 to push the lock 7 to move outside the shell II3 in the initial state. Therefore, in the initial state, one end of the lock 7 protrudes from the surface of the positioning protrusion 4. One end of the lock 7 is in a stepped structure, so that the thickness of the end of the lock 7 protruding from the surface of the positioning protrusion 4 is less than the thickness of other parts of the lock 7. The shell II3 is provided with a through hole corresponding to the lock 7. The width of the through hole is greater than the thickness of the end of the lock 7 protruding from the surface of the positioning protrusion 4, but less than the thickness of other parts of the lock 7. Therefore, the height of the lock 7 protruding from the shell II3 is limited. The end of the lock 7 protruding from the surface of the positioning protrusion 4 is provided with a guide surface 14, and the guide surface 14 is inclined to the sliding direction of the lock 7.

[0021] The housing Ⅰ1 is provided with a positioning slot 12 corresponding to the positioning protrusion 4 and a lock slot 13 corresponding to the lock head 7. The positioning slot 12 is located at the end of the electric saw body where the hand-held structure is provided. The telescopic rod 2 is embedded in the positioning slot 12 through the positioning protrusion 4 and the lock head 7 is embedded in the lock slot 13 and is movably connected to the electric saw body. After the electric saw body and the telescopic rod 2 are combined together, the handle 8 is in the initial state due to the action of the torsion spring 6. At this time, the handle 8 just blocks the housing Ⅰ1 in the direction in which the positioning protrusion 4 is separated from the positioning slot 12, that is, the swing range of the handle 8 intersects with the extension direction of the positioning protrusion 4.

[0022] If the electric saw body and the telescopic rod 2 need to be separated, turn the knob 5 to make the lock head 7 disengage from the lock slot 13 and the handle 8 away from the housing Ⅰ1, then pull the positioning protrusion 4 out of the positioning slot 12 along the positioning slot 12, and after releasing the knob 5, the lock head 7 protrudes on the surface of the positioning protrusion 4 under the action of the torsion spring 6. If the electric saw body and the telescopic rod 2 need to be combined, first turn the knob 5 to make the handle 8 avoid the extension direction of the protrusion, and then push the positioning protrusion 4 into the positioning slot 12 along the positioning slot 12. At this time, there is no need to turn the knob 5, and the installation can still be normal even if the knob 5 is loosened. When the positioning protrusion 4 contacts the guide surface 14, the positioning protrusion 4 can push the lock head 7 to move with the help of the guiding effect of the guide surface 14 until the lock head 7 is automatically embedded in the lock slot 13 to complete the installation.

Claims

1. An electric saw for high branch pruning, comprising an electric saw body and a telescopic rod (2), wherein the electric saw body is provided with a housing I (1), and the telescopic rod (2) is provided with a mounting end, wherein the housing I (1) is movably connected to the mounting end, and wherein: The telescopic rod (2) is provided with a quick-release component at the mounting end, and the quick-release component includes a housing II (3) and a self-locking component. The housing II (3) is provided with a positioning protrusion (4) with a T-shaped cross section. The self-locking component includes a knob (5), a torsion spring (6), and a lock head (7). The knob (5) is provided with a handle (8) and a transmission rod (9). The handle (8) is located at one end of the transmission rod (9). The handle (8) and the transmission rod (9) are connected as a whole. The transmission rod (9) is movably mounted on the housing II (3). The handle (8) is located outside the housing II (3). The other end of the transmission rod (9) is provided with an eccentric portion (10). The eccentric portion (10) is located inside the housing II (3). The transmission rod (9) passes through the torsion spring (6) and the transmission rod (9) is connected to the torsion spring (6). The torsion spring (6) and the housing II (3) are connected to each other. ), the lock head (7) is movably mounted on the housing II (3) in a linear sliding manner, the lock head (7) is provided with a guide slot (11) corresponding to the eccentric portion (10), the eccentric portion (10) of the transmission rod (9) is embedded in the guide slot (11), the knob (5) drives the lock head (7) to move by swinging the eccentric portion (10) relative to the center line of the transmission rod (9), the torsion spring (6) drives the transmission rod (9) to move to maintain one end of the lock head (7) protruding from the surface of the positioning protrusion (4), the housing I (1) is provided with a positioning slot (12) corresponding to the positioning protrusion (4) and a locking slot (13) corresponding to the lock head (7), the telescopic rod (2) is embedded in the positioning slot (12) through the positioning protrusion (4) and the lock head (7) is embedded in the locking slot (13) to be movably connected with the electric saw body.

2. The electric saw for high branch pruning according to claim 1, characterized in that: The positioning slide groove (12) is located at the end of the electric saw body where the hand-held structure is provided.

3. The electric saw for high branch pruning according to claim 1, characterized in that: The thickness of the end of the lock head (7) protruding from the surface of the positioning protrusion (4) is smaller than the thickness of other parts of the lock head (7), and the end of the lock head (7) protruding from the surface of the positioning protrusion (4) is provided with a guide surface (14), and the guide surface (14) is inclined in the sliding direction of the lock head (7).

4. The electric saw for high branch pruning according to claim 1, characterized in that: The swing range of the handle (8) intersects with the extension direction of the positioning protrusion (4).

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