CN102554347B - an electric chain saw - Google Patents

Abstract

The invention discloses an electric chain saw, which comprises a front handle at the front of the casing and a rear handle at the rear of the casing. The rear handle is provided with a switch button, and the front handle is provided with a micro switch in series with the switch button. When the switch button and the micro switch are turned on at the same time, the electric chain saw is working. If any one of the switch button and the micro switch is off, the electric chain saw cannot be turned on. The electric chain saw of the present invention is equipped with a front and rear double-switch linkage structure to control the start of the machine, increasing the safety of the operator, and the switch pull rod of the handle at the front handle can be switched on in two directions, which increases the machine's ability to operate in different environments. operability.

Description

an electric chain saw

technical field

The present invention relates to electric chain saws.

Background technique

Electric chain saw is a relatively dangerous tool. Generally, users need to go through training. Even so, there will be safety accidents. With the development of the times, the application fields of electric chain saws are becoming wider and wider, and more and more people are using them. More and more, this puts forward higher requirements for the safety and operability of the chain saw design.

Contents of the invention

The technical problem to be solved by the present invention is to provide an electric chain saw with convenient operation and high safety.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: an electric chain saw, comprising a front handle at the front of the casing and a rear handle at the rear of the casing, the rear handle is provided with a switch button, and is characterized in that: The front handle is provided with a micro switch in series with the switch button, the switch button and the micro switch are turned on at the same time, the electric chain saw is working, and any one of the switch button and the micro switch is off, the electric chain saw cannot be turned on.

Preferably, the micro switch is opened and closed by a switch pull rod on the front handle.

Preferably, the front handle is in the shape of a door frame, and the left and right sides of the bottom of the front handle are respectively installed on the left and right sides of the front of the casing. A spring is provided respectively, the inside of the switch pull rod is connected to the spring, the outside of the switch pull rod exposes the front handle, the switch pull rod is pushed into the crossbeam, the switch pull rod turns on the micro switch, the switch pull rod is released, and under the action of the spring, the switch pull rod resets.

Preferably, a limit structure is provided between the switch pull rod and the front handle to limit the movement space of the switch pull rod and prevent the switch pull rod from slipping out of the front handle.

Preferably, the switch pull rod is L-shaped, the upper side end of the switch pull rod is hinged with the front handle, the lower side of the switch pull rod is arranged in the left side of the front handle, and the cavity between the left side of the front handle and the switch pull rod There is enough clearance to allow the switch lever to be moved to the left and activate the microswitch.

Preferably, the upper side end of the switch pull rod protrudes upward and is provided with a U-shaped groove, and the front handle is provided with a pin shaft, and the U-shaped groove is provided on the pin shaft.

Preferably, the position-limiting structure includes a convex edge provided on the upper side and the left edge of the switch pull rod, and the front handle is provided with a gap for the switch pull rod to protrude from, and the convex edge snaps into the inside of the front handle and cannot come out Front handle clearance.

The electric chain saw of the present invention is equipped with a front and rear double-switch linkage structure to control the start of the machine and increase the safety of the operator. The switch pull rod of the handle at the front handle can be switched on in two directions, which increases the safety of the machine in different environments. operability.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

Figure 1 is an exploded view of the front handle;

Fig. 2 is a structural diagram when the front handle is not working;

Fig. 3 is a structural diagram when the switch pull rod is moved to the A direction;

Fig. 4 is a structural diagram when the switch pull rod is moved to the B direction;

Fig. 5 is a structural diagram of the whole machine of the electric chain saw.

Detailed ways

Referring to Fig. 1 to Fig. 5, it is specifically described as an electric chain saw according to the present invention, which includes a front handle at the front of the casing and a rear handle at the rear of the casing, the rear handle is provided with a switch button 10, and the front handle is There is a micro switch 5 connected in series with the switch button, the switch button and the micro switch are turned on at the same time, the electric chain saw works, and any one of the switch button and the micro switch is in a closed state, the electric chain saw cannot be turned on. Described micro switch is controlled open and close by the switch pull bar 6 on the front handle. The front handle is in the shape of a door frame, and the left and right sides of the bottom of the front handle are respectively installed on the left and right sides of the front of the casing. A spring 4 is provided, the inside of the switch pull rod is connected to the spring, the outside of the switch pull rod exposes the front handle, the switch pull rod is pushed into the beam, the switch pull rod opens the micro switch, the switch pull rod is released, and under the action of the spring, the switch pull rod resets. A limit structure is arranged between the switch pull rod and the front handle to limit the action space of the switch pull rod and prevent the switch pull rod from slipping out of the front handle. The switch pull rod is L-shaped, the upper side end of the switch pull rod is hinged with the front handle, the lower side of the switch pull rod is set in the left side of the front handle, and there is enough space between the inner cavity of the left side of the front handle and the switch pull rod. The gap allows the switch lever to be moved to the left and activate the microswitch. The upper side end of the switch pull rod protrudes upwards and is provided with a U-shaped groove 12, and the front handle is provided with a pin shaft 13, and the U-shaped groove is arranged on the pin shaft. The limit structure includes a convex edge 11 provided on the upper side and the left edge of the switch pull rod. The front handle is provided with a gap for the switch pull rod to protrude from. The convex edge snaps into the inside of the front handle and cannot come out of the front handle Clearance.

The front handle includes an L-shaped left handle at the back, which is composed of lower handle 1 and upper handle 2. The lower handle 1 and upper handle 2 are fastened together by screws 3, and the left handle is fixed on the On the handle support 9, the handle support is closed by the handle support panel 8, and the handle support and the handle support panel are fastened as one by self-tapping screws 7.

First hold the switch button 10 firmly, then turn on the switch at the back handle, then hold the switch lever 6 at the upper end of the front handle and move it in the direction A. After running for a while, the micro switch 5 at the front handle is powered on (Figure 3). Start; or when the micro switch of the rear handle is turned on, hold the side switch lever 6 of the front handle and move in the direction of B, and under the action of the U-shaped groove at C, the left end of the switch lever 6 moves upwards to turn on the micro switch (Figure 4) status.

Claims (1)

1. an electric chain saw, comprise the front handlebar of casing front portion and the rear handle at casing rear portion, described rear handle is provided with a shift knob (10), it is characterized in that: described front handlebar is provided with a microswitch of connecting with shift knob (5), shift knob and microswitch are opened simultaneously, electric chain saw work, shift knob and microswitch any one in closed condition, electric chain saw can not be opened, described microswitch is controlled and is opened and closed by the switch lever on front handlebar (6), described front handlebar is doorframe shape, the left and right sides, front handlebar bottom is installed on respectively the anterior left and right sides of casing, described microswitch is located in the doorframe crossbeam, front handlebar crossbeam inside is respectively equipped with a spring (4) in the microswitch left and right sides, described switch lever inboard is connected on spring, front handlebar is exposed in the switch lever outside, to pull switch pull bar in crossbeam, switch lever is opened microswitch, the trip switch pull bar, under spring action, switch lever resets, be provided with the motion space of position limiting structure limit switch pull bar between described switch lever and front handlebar and prevent that switch lever from deviating from front handlebar, described switch lever is L shaped, described switch lever upper side edge end and front handlebar are hinged, limit, switch lever left side is located in limit, front handlebar left side, being provided with enough gaps between front handlebar left side limit inner chamber and switch lever makes switch lever can pull to the left and open microswitch, described switch lever upper side edge end makes progress side-prominent and is provided with a U-shaped groove (12), described front handlebar is provided with a bearing pin (13), described U-shaped groove is located on bearing pin, described position limiting structure comprises the chimb (11) that switch lever upper side edge and edge, limit, left side arrange, described front handlebar is provided with the gap of stretching out for switch lever, described chimb snaps in the gap that described front handlebar is inner and can not deviate from front handlebar.

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