WO2022134210A1

WO2022134210A1 - Handheld chain saw

Info

Publication number: WO2022134210A1
Application number: PCT/CN2021/070203
Authority: WO
Inventors: 邓伟
Original assignee: 苏州甘泰精密机械有限公司
Priority date: 2020-12-23
Filing date: 2021-01-05
Publication date: 2022-06-30
Also published as: CN112655511A

Abstract

A handheld chain saw, comprising a saw chain mechanism; a grip handle (4); an adjustment knob (7); a locking mechanism (3), wherein when the adjustment knob (7) interlocks with the locking mechanism (3), there is no relative movement between the grip handle (4) and the saw chain mechanism; and at least one knob control switch (8). The adjustment knob (7) controls the knob control switch (8). When the grip handle (4) is rotatably adjusted around a rotation axis (1-1) relative to the saw chain mechanism, the knob control switch (8) cuts off a circuit of the handheld chain saw to ensure that the handheld chain saw is in an operating state and the grip handle (4) has one and only unique state in the rotatably adjusted state.

Description

A hand-held chainsaw

technical field

The invention belongs to the technical field of hand-held chain saws, and particularly relates to a hand-held chain saw.

Background technique

At present, the handles of most chainsaws are fixed, and the handle angle cannot be adjusted. When cutting, the operator's position is relatively fixed, which is not conducive to cutting the ground or operating in a narrow space, and is not conducive to finding a safer position for cutting. At the same time, in terms of cutting quality, the two cutting surfaces of the existing chainsaw cannot effectively approach the ground, resulting in either the left stump is high, or the stump is sharp and oblique, threatening the personal safety of the operator, and if the stump is not Dealing with it in time can also affect the safety of others.

SUMMARY OF THE INVENTION

In order to solve the problems in the prior art, the purpose of the present invention is to provide a hand-held chainsaw.

In order to achieve the above-mentioned purpose and achieve the above-mentioned technical effect, the technical scheme adopted in the present invention is:

A hand-held chainsaw, comprising a chainsaw body, the chainsaw body comprising:

Saw chain mechanism for cutting operations;

A holding handle, a trigger and a power switch are arranged on the holding handle, and the power switch is turned on or off to control the power switch to connect or cut off the circuit of the hand-held chainsaw;

adjustment knob;

A locking mechanism, when the locking mechanism and the adjustment knob are interlocked, there is no relative movement between the grip handle and the saw chain mechanism;

At least one knob control switch;

the adjustment knob controls at least one knob control switch for turning on or off the circuit of the hand-held chainsaw;

When the holding handle is rotated and adjusted relative to the saw chain mechanism around the rotation axis, the knob controls the switch to cut off the circuit of the hand-held chainsaw, ensuring that the hand-held chain saw is in the running state and the holding handle is in the rotational adjustment state and there is only one and only one. Status appears.

Further, the saw chain mechanism includes a support guide plate, a power mechanism, a drive sprocket and a transmission mechanism, a saw chain is arranged in the groove opened on the support guide plate, the saw chain is engaged with the drive sprocket, and the power The mechanism is connected with the power switch and the knob control switch. The power switch and the knob control switch control the opening and closing of the power mechanism. The power mechanism is connected to the driving sprocket through the transmission mechanism.

Further, the power mechanism is a motor, and the transmission mechanism is a transmission gear adapted to the saw chain.

Further, the power mechanism is powered by a DC power supply or an AC power supply.

Further, the adjustment knob is provided with a reset elastic member with certain elasticity for realizing reset, and one end of the adjustment knob is arranged on the holding handle.

Further, the reset elastic member is a spring.

Further, the locking mechanism is a locking groove which is mutually matched with the adjusting knob and is provided on the saw chain mechanism.

Further, when the adjustment knob is in a natural locking state, the adjustment knob is locked by the locking mechanism, the adjustment knob control knob control switch is normally on, and the power switch is turned on or off to control the power switch to connect or cut off the circuit of the hand-held chainsaw to achieve control. Start and stop of the hand-held chainsaw.

Further, when the adjustment knob is in the operation release state, the adjustment knob is released from the locking of the locking mechanism, the grip handle performs a rotational adjustment movement relative to the saw chain mechanism around the rotation axis, the adjustment knob controls the knob to control the switch to disconnect, and cuts off the hand-held chain saw. circuit, the hand-held chainsaw is in a stopped state.

Compared with the prior art, the beneficial effects of the present invention are:

The invention discloses a hand-held chain saw, comprising a saw chain mechanism for realizing cutting operations; a handle is held, a trigger and a power switch are arranged on the handle, and the power switch is controlled to turn on or off the hand-held chain saw by turning the trigger on or off Adjustment knob; locking mechanism, when the adjustment knob and the locking mechanism form an interlock, there is no relative movement between the grip handle and the saw chain mechanism; at least one knob control switch; the adjustment knob controls at least one knob control switch for connecting Turn on or cut off the circuit of the hand-held chain saw; when the handle is rotated and adjusted relative to the saw chain mechanism around the rotation axis, the knob controls the switch to cut off the circuit of the hand-held chain saw, to ensure that the hand-held chain saw is in the running state and the handle is in the rotational adjustment state There is one and only one state that occurs. The hand-held chain saw provided by the present invention completely avoids the area where the branches fall after cutting, especially the lumberjacks can hide behind the trunk when working on the tree, and cut the branches on the opposite side of the trunk safely and conveniently, and the operation is more flexible and convenient; It eliminates the inconvenience that the conventional chainsaw operator is not easy to approach the side of the object to be cut and performs reverse operations, improves the accessibility of hand-held chainsaw cutting, and makes the operation safer. When cutting the roots of shrubs, the hands can be kept away from the ground, avoiding scratches Closer to the ground, and cutting stumps can be flush.

Description of drawings

1 is a schematic structural diagram of Embodiment 1 of the present invention;

2 is a top view of Embodiment 1 of the present invention;

3 is a schematic structural diagram of the adjusting knob according to Embodiment 1 of the present invention when it is in a natural locking state;

4 is a schematic structural diagram of the grip handle in a rotational adjustment state when the adjustment knob according to Embodiment 1 of the present invention is not locked;

FIG. 5 is a schematic structural diagram of the grip handle according to Embodiment 1 of the present invention when it is in a rotational adjustment state; FIG. 5 a is a structural schematic view of the grip handle of Embodiment 1 of the present invention rotating to the right relative to the saw chain mechanism; FIG. 5 b is an implementation of the present invention A schematic diagram of the initial structure of the holding handle of Example 1 when the rotation adjustment is not performed; FIG. 5c is a schematic structural diagram of the holding handle of Example 1 of the present invention rotating to the left relative to the saw chain mechanism;

6 is a schematic structural diagram of the adjusting knob according to Embodiment 2 of the present invention when it is in a natural locking state;

7 is a schematic structural diagram of the grip handle in a rotational adjustment state when the adjustment knob according to Embodiment 2 of the present invention is not locked;

8 is a circuit diagram of a power mechanism, a knob control switch and a power switch of the present invention under a DC power supply;

9 is a circuit diagram of a power mechanism, a knob control switch and a power switch of the present invention under an AC power supply;

Figures 10a-10c are schematic structural diagrams of the hand-held chainsaw of the present invention at different angular positions when the hand-held chainsaw performs a cutting operation;

Among them, 1. power mechanism; 1-1, rotation axis; 1-2, transmission mechanism; 1-3, driving sprocket; 2, saw chain; 3, locking mechanism; 4, holding handle; 5, trigger; 6 7. Adjustment knob; 8. Knob control switch; 9. Reset elastic piece; 10. Power switch.

Detailed ways

The embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.

Example 1

As shown in Figures 1-5 and 8-10, a hand-held chain saw includes a chain saw body, and the chain saw body includes:

The saw chain mechanism is used to realize the cutting operation; the saw chain mechanism includes a power mechanism 1, a transmission mechanism 1-2, a driving sprocket 1-3 and a support guide plate 6, and the saw chain 2 is arranged in the groove opened on the support guide plate 6, and the saw chain The chain 2 meshes with the drive sprocket 1-3, the power mechanism 1 is connected to the drive sprocket 1-3 through the transmission mechanism 1-2, and performs power transmission. The driving sprocket 1-3 drives the saw chain 2 to perform the cutting operation, and installs the accessories to the proper position on the saw chain mechanism by pressing the nut;

Hold the handle 4, the trigger 5 and the power switch 10 are set on the handle 4, the power mechanism 1 is connected with the power switch 10, and the power switch 10 is controlled by the switch trigger 5 to turn on or off the circuit of the hand-held chain saw, so as to control the hand-held chain saw. the purpose of opening and closing the saw;

Adjustment knob 7;

Locking mechanism 3, the locking mechanism 3 is adapted to the adjustment knob 7 to realize the locking of the adjustment knob 7, when the locking mechanism 3 and the adjustment knob 7 are interlocked, there is no relative movement between the grip handle 4 and the saw chain mechanism, The handle 4 cannot be rotated and adjusted relative to the saw chain mechanism;

A knob control switch 8, which can be set on the handle 4;

The adjustment knob 7 controls the state of the knob control switch 8. When the handle 4 rotates and adjusts relative to the saw chain mechanism around the rotation axis 1-1, the knob control switch 8 disconnects and cuts off the circuit of the handheld chain saw to ensure that the handheld chain saw is running. Status and holding handle 4 There is one and only one status in the rotation adjustment status.

The adjustment knob 7 is provided with a reset elastic member 9, and the reset elastic member 9 is preferably a spring.

The end of the saw chain mechanism close to the grip handle 4 can be vertically set with a rotating shaft, so that the grip handle 4 can rotate relative to the saw chain mechanism around the rotating shaft. A rotation axis 1-1 is formed on the mechanism, so that the handle 4 can be rotated left or right relative to the saw chain mechanism around the rotation axis 1-1.

The locking mechanism 3 is a locking groove that is mutually compatible with the adjusting knob 7 and is provided on the saw chain mechanism. The bottom side of the adjusting knob 7 is provided with a raised portion that is adapted to the locking mechanism 3, and the raised portion is clamped to the locking mechanism 3. When it is up, the adjustment knob 7 is locked, the grip handle 4 is in a locked state, and the rotation adjustment movement cannot be performed. The locking mechanism 3 of the present embodiment 1 can also be designed as a structure such as a meshing tooth or a locking boss provided on the saw chain mechanism as required.

The adjustment knob 7 controls the knob control switch 8 to realize that the position of the handle 4 can be adjusted after the power is turned off:

When the adjustment knob 7 is in the natural locking state, the adjustment knob 7 is locked by the locking mechanism 3, the adjustment knob 7 controls the knob control switch 8 to be in the normally on state, and the switch trigger 5 can realize the normal start and stop control of the hand-held chain saw. 5. Control the on or off of the power switch 10 to realize the start and stop control of the hand-held chainsaw, as shown in FIG. 3 .

When the adjustment knob 7 is released from the locking of the locking mechanism 3, the adjustment knob 7 is in the operation release state, and the adjustment knob 7 is moved to the point where the grip handle 4 can perform a rotational adjustment movement relative to the saw chain mechanism around the rotation axis 1-1, correspondingly, the knob controls When the switch 8 is turned off, the entire circuit of the hand-held chain saw is cut off, the entire electrical circuit is disconnected, the power mechanism 1 does not start, the saw chain 2 stops moving, and the cutting operation cannot be completed. At this time, the power switch 10 has no effect on the hand-held chain saw. , the trigger 5 cannot start the hand-held chain saw, but the handle 4 can rotate and adjust the angle position when the hand-held chain saw is not running in a safe state, as shown in Figure 4-5.

The power mechanism 1 of the present embodiment 1 is a motor, which can be powered by a DC power supply or an AC power supply. When the AC power supply is used for power supply, the circuit diagram of the motor, the knob control switch 8 and the power switch 10 is shown in Table 8; when the DC power supply is used for power supply At this time, the circuit diagram of the motor, knob control switch 8 and power switch 10 is shown in Table 9. At this time, the circuit of the hand-held chainsaw needs to be connected to the control board for overcurrent and overdischarge protection; the adjustment knob 7 is in natural locking When the adjustment knob 7 controls the knob control switch 8 in the normally on state, the switch of the power switch 10 directly affects the start and stop of the hand-held chainsaw. When the adjustment knob 7 is released from the lock of the locking mechanism 3 and the adjustment knob 7 is in the operation release state, The knob control switch 8 cuts off the circuit, the entire circuit of the hand-held chain saw is cut off, and the hand-held chain saw no longer runs. At this time, the hand-held handle 4 can be rotated relative to the saw chain mechanism around the rotation axis 1-1 to adjust the cutting angle.

When the hand-held chainsaw of the present invention cuts branches, etc., an appropriate cutting angle can be selected by adjusting the angle of the holding handle 4 relative to the cutting surface according to actual needs, as shown in Figures 10a-c, completely avoiding the falling branches It can also perform reverse operations, cutting closer to the ground, with strong accessibility and high practical value.

Example 2

As shown in Figures 6-7 and 8-10, a hand-held chain saw includes a chain saw body, and the chain saw body includes:

Adjustment knob 7;

A knob control switch 8, which can be set on the handle 4;

The difference between the present embodiment 2 and the embodiment 1 is that the rotation axis 1-1 is integrated with the adjustment knob 7, and the grip handle 4 can rotate relative to the saw chain mechanism around the rotation axis 1-1 (the central axis of the adjustment knob 7) to work. The principle is the same as that of Example 1.

When the adjustment knob 7 is in the natural locking state, the adjustment knob 7 is locked by the locking mechanism 3, the adjustment knob 7 controls the knob control switch 8 to be in the normally on state, and the switch trigger 5 can realize the normal start and stop control of the hand-held chain saw. 5. Control the on or off of the power switch 10 to realize the start and stop control of the hand-held chainsaw, as shown in FIG. 6 .

When the adjustment knob 7 is released from the locking of the locking mechanism 3, the adjustment knob 7 is in the operation release state, and the adjustment knob 7 is moved to the point where the grip handle 4 can perform a rotational adjustment movement relative to the saw chain mechanism around the rotation axis 1-1, correspondingly, the knob controls The switch 8 is off, and the entire circuit of the hand-held chain saw is cut off, the entire electrical circuit is disconnected, the power mechanism 1 cannot be started, the trigger 5 cannot start the hand-held chain saw, the saw chain 2 stops moving, and the cutting operation cannot be completed at this time. The handle 4 can be rotated to adjust the angle position when the hand-held chainsaw is not running in a safe state, as shown in FIG. 7 .

It should be noted that the adjusting knob 7 of the present invention can rotate with the grip handle 4, or it can be designed to not rotate with the grip handle 4. The adjusting knob 7 can perform rotational movement or translational movement, as long as it is locked The mechanism 3 can lock the adjustment knob 7 and can control whether the grip handle 4 can rotate relative to the saw chain mechanism through whether the adjustment knob 7 is locked or not.

The parts not specifically described in the present invention include the power mechanism 1, the saw chain 2, the transmission mechanism 1-2 and other structures, and the existing technology or existing products can be used. For example, the power mechanism 1 adopts a motor, and the transmission mechanism 1-2 adopts a transmission The gears are adapted to the saw chain 2, and the positions of each component can be flexibly designed according to actual needs, and the specific setting positions are not limited, which will not be repeated here.

The above descriptions are only the embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other related technologies Fields are similarly included in the scope of patent protection of the present invention.

Claims

A hand-held chainsaw, characterized in that it comprises a chainsaw body, the chainsaw body comprising:

Saw chain mechanism for cutting operations;

A holding handle, a trigger and a power switch are arranged on the holding handle, and the power switch is turned on or off to control the power switch to connect or cut off the circuit of the hand-held chainsaw;

adjustment knob;

A locking mechanism, when the locking mechanism and the adjustment knob are interlocked, there is no relative movement between the grip handle and the saw chain mechanism;

At least one knob control switch;

the adjustment knob controls at least one knob control switch for turning on or off the circuit of the hand-held chainsaw;

When the holding handle is rotated and adjusted relative to the saw chain mechanism around the rotation axis, the knob controls the switch to cut off the circuit of the hand-held chainsaw, ensuring that the hand-held chain saw is in the running state and the holding handle is in the rotational adjustment state and there is only one and only one. Status appears.
The hand-held chain saw according to claim 1, wherein the saw chain mechanism comprises a support guide plate, a power mechanism, a driving sprocket and a transmission mechanism, and a saw chain is arranged in a groove opened on the support guide plate, The saw chain is meshed with the drive sprocket, and the power mechanism is connected to the power switch and the knob control switch. The power switch and the knob control switch control the opening and closing of the power mechanism. The power mechanism is connected to the drive sprocket through the transmission mechanism. The mechanism controls the drive sprocket to drive the saw chain to perform cutting operations.
The hand-held chain saw according to claim 2, wherein the power mechanism is a motor, and the transmission mechanism is a transmission gear adapted to the saw chain.
The hand-held chain saw according to claim 1, wherein the adjustment knob is provided with a reset elastic member.
The hand-held chain saw according to claim 4, wherein the reset elastic member is a spring.
The hand-held chain saw according to claim 1, wherein the locking mechanism is a locking groove which is mutually matched with the adjusting knob and is provided on the saw chain mechanism.
The hand-held chain saw according to claim 1, wherein when the adjustment knob is in a natural locking state, the adjustment knob is locked by a locking mechanism, and the adjustment knob control knob control switch is normally on, and is controlled by turning the trigger on or off. The power switch turns on or off the circuit of the hand-held chain saw to control the start and stop of the hand-held chain saw.
The hand-held chain saw according to claim 1, wherein when the adjustment knob is in the operation release state, the adjustment knob is released from the locking of the locking mechanism, and the holding handle performs a rotational adjustment movement relative to the saw chain mechanism around the rotation axis, The adjustment knob controls the knob to control the switch to disconnect, cut off the circuit of the hand-held chain saw, and the hand-held chain saw is in a stop running state.