CN113580290A

CN113580290A - Chain saw

Info

Publication number: CN113580290A
Application number: CN202110874325.2A
Authority: CN
Inventors: 霍立祥
Original assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Current assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-11-02
Anticipated expiration: 2041-07-30
Also published as: CN113580290B

Abstract

The invention relates to a chain saw, which is provided with a guide plate, wherein the chain saw comprises a shell, a motor assembly arranged in the shell, a shield assembly rotationally connected to the front end of the shell, a holding part connected to the shell and a main switch arranged on the holding part; the chain saw comprises an auxiliary switch arranged in the shell, the auxiliary switch is connected with the main switch in series, and the protective cover assembly triggers and conducts the auxiliary switch all the time in the rotating process of the protective cover assembly relative to the shell. According to the invention, the auxiliary switch connected with the main switch in series is arranged on the chain saw, and the shield assembly triggers and conducts the auxiliary switch all the time, so that the use safety of the chain saw is improved, and the injury caused by using the chain saw without installing the shield assembly by a user is effectively avoided.

Description

Chain saw

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of garden tools, in particular to a chain saw.

[ background of the invention ]

The chain saw is a garden tool which is driven by a motor to operate to cut wood, and the existing chain saw comprises a shield arranged above the chain, wherein the shield can rotate around a shell to open during the cutting process of the chain saw, and the shield can prevent the chain saw from bumping into a hard object and kicking back during the use process, so that the safety of a user is protected. However, some users may operate the chain saw illegally when the guard is removed, and the safety of the user may not be guaranteed when the chain saw kicks backward.

In view of the above, there is a need for an improved chain saw that overcomes the deficiencies of the prior art.

[ summary of the invention ]

In view of the disadvantages of the prior art, the present invention aims to provide a chain saw with high safety.

The invention solves the problems of the prior art by adopting the following technical scheme: a chain saw is provided with a guide plate, the chain saw comprises a shell, a motor assembly arranged in the shell, a shield assembly rotatably connected to the front end of the shell, a holding part connected to the shell and a main switch arranged on the holding part, the guide plate is fixed to the front end of the shell, the shield assembly is located on the upper side of the guide plate and extends to the front end part of the guide plate, and the main switch controls starting and stopping of the motor assembly; the chain saw comprises an auxiliary switch mounted in the housing, the auxiliary switch being connected in series with the main switch, the shield assembly always activating and conducting the auxiliary switch during rotation of the shield assembly relative to the housing.

The further improvement scheme is as follows: the shield assembly comprises a shield body at least partially shielding the guide plate and a connecting part connected to the rear end of the shield body, and the shield assembly is connected to the shell through the connecting part.

The further improvement scheme is as follows: the guard shield subassembly is located including wearing to establish connecting portion with the screw and the cover of casing the torsional spring of screw periphery, torsional spring connect in connecting portion with between the casing, the guard shield subassembly winds the screw carries out the pivot.

The further improvement scheme is as follows: the auxiliary switch is a contact type microswitch, the shield assembly comprises a contact surface abutted against the microswitch, the contact surface is formed on the rear end surface of the connecting part, and the contact surface is arranged in an arc shape; in the process that the shield assembly rotates relative to the shell, the contact surface always presses against and triggers the micro switch to be switched on.

The further improvement scheme is as follows: the auxiliary switch is a non-contact magnetic switch, the shield assembly comprises a magnet arranged at the rear end of the connecting part, and the magnet is arranged on the outer peripheral side of the connecting part in an arc shape; and in the process that the protective cover component rotates relative to the shell, the magnet is always triggered to conduct the magnetic switch.

The further improvement scheme is as follows: the magnetic switch comprises a first terminal fixed on the shell, a second terminal movably connected to the shell and an elastic piece abutting against the second terminal, when the magnetic switch is conducted, the second terminal is connected to the first terminal, and the elastic piece biases the second terminal towards the direction far away from the first terminal.

The further improvement scheme is as follows: the magnetic switch includes a shaft mounted to the housing, and the second terminal is connected to and pivots about the shaft.

The further improvement scheme is as follows: the first terminal is located between the magnet and the second terminal.

The further improvement scheme is as follows: the housing includes a baffle extending from the shaft along the second terminal, the second terminal abutting against the baffle.

The further improvement scheme is as follows: the shell comprises an inwards concave clamping groove, one end of the elastic piece is contained in the clamping groove, and the other end of the elastic piece is abutted to the second terminal.

Compared with the prior art, the invention has the following beneficial effects: through set up the auxiliary switch who is connected with main switch series on the chain saw to the guard shield subassembly is for the pivoted in-process of casing, triggers and switches on this auxiliary switch all the time, makes only under the circumstances of guard shield subassembly installation at the casing, and the chain saw just can normal operating, has improved the safety in utilization of chain saw greatly, and effectively avoids the user to use the chain saw and the injury that causes under the circumstances of not installing the guard shield subassembly.

[ description of the drawings ]

The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:

FIG. 1 is a schematic view of the chainsaw of the present invention in an uncut condition;

FIG. 2 is a schematic view of the chainsaw of FIG. 1 without a battery pack installed;

FIG. 3 is a schematic exploded view of the chain saw of FIG. 1;

FIG. 4 is a top view of the chain saw of FIG. 1;

FIG. 5 is a schematic view of the chain saw of FIG. 1 in a cutting position;

FIG. 6 is a schematic exploded view of the chain saw shown in FIG. 5;

FIG. 7 is a modified design of the chain saw shown in FIG. 3;

FIG. 8 is an enlarged view of circle M of the chain saw of FIG. 7;

FIG. 9 is a schematic view of the chain saw of FIG. 7 with the hood in an open position.

[ detailed description ] embodiments

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

Referring to fig. 1, in a chain saw 100 according to a first embodiment of the present disclosure, a guide plate 2 and a chain 200 mounted around an outer periphery of the guide plate 2 are mounted to the chain saw 100, where a front-back direction of the chain saw 100 is defined as a transverse X direction, a vertical Y direction, a left-right direction is defined as a longitudinal Z direction, and the transverse X direction, the vertical Y direction, and the longitudinal Z direction are perpendicular to each other.

Referring to fig. 1 and 3, the chain saw 100 includes a housing 1 extending in a transverse direction X, a motor assembly installed in the housing 1, a transmission assembly 8 driven by the motor assembly, a guard assembly 3 rotatably connected to a front end of the housing 1, a grip portion 4 connected to the housing 1, an installation portion 10 connected to the grip portion 4, a main switch 5 installed on the grip portion 4, a battery pack 7 connected to the grip portion 4, a circuit board 9 located between the grip portion 4 and the battery pack 7, and an oil pump assembly installed and fixed to the housing 1, a guide plate 2 fixed to a front end of the housing 1, the grip portion 4 extending rearward from a rear end of the housing 1, the installation portion 10 and the housing 1 located on front and rear sides of the grip portion 4 in the transverse direction X, and the grip portion 4 and the guard assembly 2 also located on front and rear sides of the housing 1 in the transverse direction X.

In the present embodiment, the grip portion 4 is provided on the rear side of the housing 1, the mounting portion 10 is provided on the rear side of the grip portion 4, and the housing 1, the grip portion 4, and the mounting portion 10 are integrally formed, so that the number of parts is reduced, and the entire appearance of the chainsaw 100 is more harmonious and beautiful.

In the present embodiment, the battery pack 7 is located at the rear end of the grip portion 4 and is mounted on the mounting portion 10, the circuit board 9 is disposed in the mounting portion 10, the main switch 5 is connected to the circuit board 9 and controls the start and stop of the motor assembly, and the battery pack 7 is connected to the motor assembly and supplies power to the motor assembly.

The chain 200 is sleeved and surrounded on the whole peripheral side of the guide plate 2, the battery pack 7 is inserted into the mounting part 10, a user presses the main switch 5, the motor assembly is started, and the transmission assembly and the chain 200 are driven to operate, so that the workpiece 300 is cut; the oil pump assembly delivers the stored oil to the transmission assembly 8 to lubricate the chain 200, thereby improving the performance of the chain 200 and extending the service life of the chain 200.

Referring to fig. 1 and 3, the oil pump assembly includes an oil can 11 at least partially received in the housing 1, an oil bubble 12 connected to the oil can 11, an oil inlet pipe 13 connected between the oil can 11 and the oil bubble 12, and an oil outlet pipe 14 connected between the oil bubble 12 and the transmission assembly 8, the chain 200 is driven and operated by the transmission assembly 8, the oil bubble 12 is pressed, and oil is transferred in the oil inlet pipe 13 and the oil outlet pipe 14, so that the oil pump assembly delivers the oil stored in the oil can 11 to the transmission assembly 8 and lubricates the chain 200.

In the present embodiment, the oil bubbles 12 are mounted on the housing 1, and the oil bubbles 12 are adjacent to the oil can 11 and protrude from the top surface of the housing 1.

In the present embodiment, the oil can 11 includes a neck 111 protruding from the top surface of the housing 1 and an oil can cover 112 mounted on the neck 111, and the oil bubble 12 is located between the oil can cover 112 and the battery pack 7 in the transverse direction X; the vertex of the oil can cover 112 in the vertical direction Y and the vertex of the battery pack 7 in the vertical direction Y are connected to form a straight line B, and the vertex of the oil bubble 12 in the vertical direction Y is lower than the straight line B. By arranging the oil bubbles 12 at the inner side of the connecting line of the top of the oil can cover 112 and the top of the battery pack 7, the oil bubbles 12 are effectively prevented from being scratched or damaged in the falling process.

As shown in fig. 1 and fig. 2, after the battery pack 7 is detached from the mounting portion 10, the oil vacuole 12 is located between the oil can lid 112 and the mounting portion 10 in the horizontal direction X, at this time, a line connecting a vertex of the oil can lid 112 in the vertical direction Y and a vertex of the mounting portion 10 in the vertical direction Y forms a straight line a, the vertex of the oil vacuole 12 in the vertical direction Y is also lower than the straight line a, and the vertex of the battery pack 7 in the vertical direction Y is higher than the vertex of the mounting portion 10 in the vertical direction Y. By disposing the oil vacuole 12 inside the line connecting the apex of the oil pan cover 112 and the apex of the mounting portion 10, the oil vacuole 12 can be effectively protected from damage even in a state where the battery pack 7 is detached from the chainsaw 100.

Referring to fig. 4 again, the oil pan cover 112 and the mounting portion 10 extend along the longitudinal direction Z, a pair of straight lines C is formed between the outermost sides of the oil pan cover 112 and the mounting portion 10 in the longitudinal direction Z, and the oil bubbles 12 are located between the pair of straight lines C in the longitudinal direction Z. By arranging the oil vacuole 12 between the oil pan cover 112 and the outermost connecting line of the mounting portion 10 in the longitudinal Z direction, the oil vacuole 12 is protected from multiple orientations and the oil vacuole 12 is prevented from being damaged.

Referring to fig. 3, 5 and 6, the guard assembly 3 is located on the upper side of the guide plate 2 and extends to the front end of the guide plate 2, during the cutting process, the guard assembly 3 will open around the housing 1 in a rotating manner, and the chain 200 will kick back when it encounters a hard object, so that the guard assembly 3 can effectively ensure the safety of the user.

In the present embodiment, the chainsaw 100 further includes an auxiliary switch mounted in the housing 1, the auxiliary switch being connected in series with the main switch 5, the circuit board 9 being electrically connected to the main switch 5 and the auxiliary switch, specifically, the auxiliary switch is a contact type microswitch 6, and the guard assembly 3 is in contact with the microswitch 6. Through set up the micro-gap switch 6 with main switch 5 series connection on chain saw 100 to the in-process that guard shield subassembly 3 rotated for casing 1 supports all the time and presses and triggers and switch on micro-gap switch 6, makes only under the condition that guard shield subassembly 3 was installed at casing 1, chain saw 100 just can normal operating, has improved the safety in utilization of chain saw 100 greatly, and effectively avoids the user to use chain saw 100 and the injury that causes under the condition of not installing guard shield subassembly 3.

Referring to fig. 3, the shield assembly 3 includes a cover 31 at least partially covering the guide plate 2, a connecting portion 32 connected to a rear end of the cover 31, a screw 35 penetrating the connecting portion 32 and the housing 1, and a torsion spring 34 disposed around the screw 35, the shield assembly 3 is connected to the housing 1 through the connecting portion 32, the torsion spring 34 is connected between the connecting portion 32 and the housing 1, and the shield assembly 3 pivots around the screw 35 and is reset under the action of the torsion spring 34.

In this embodiment, the shield assembly 3 further includes a contact surface 33 abutting against the micro switch 6, the contact surface 33 is formed on the rear end surface of the connecting portion 32, and the contact surface 33 is disposed in an arc shape, so that in the process of rotating the shield assembly 3 relative to the housing 1, the contact surface 33 can always abut against and trigger the micro switch 6 to be turned on, so that the micro switch 6 is in a closed state, and the chain saw 100 can normally operate when the shield assembly 3 is mounted on the housing 1.

In the present embodiment, the microswitch 6 is located at the front end of the housing 1 and adjacent to the connecting portion 32, so that the chainsaw 100 is more compact in structure and more reasonable in layout.

Referring to fig. 7 and 9, in the second embodiment of the present invention, the whole structure of the chain saw is substantially the same as that of the chain saw of the first embodiment, but the difference is that: the auxiliary switch is a non-contact magnetic switch 6 ', the shield assembly 3' comprises a magnet 36 arranged at the rear end of the connecting part 32 ', and the magnet 36 is arranged at the outer periphery of the connecting part 32' in an arc shape; during the rotation of the shield assembly 3 relative to the housing 1 ', the magnet 36 always activates and turns on the magnetic switch 6'.

Referring to fig. 8, the magnetic switch 6 'includes a first terminal 61' fixed to the housing 1 ', a second terminal 62' movably connected to the housing 1 ', an elastic member 63' pressing against the second terminal 62 ', and a rotating shaft 64' mounted to the housing 1 ', and the second terminal 62' is connected to the rotating shaft 64 'and pivots around the rotating shaft 64'.

In the present embodiment, the elastic member 63' is a spring.

In the present embodiment, the first terminal 61 ' is located between the magnet 36 and the second terminal 62 ', and the elastic member 63 ' biases the second terminal 62 ' in a direction away from the first terminal 61 '.

When the shield assembly 3 ' is mounted to the housing 1 ', the second terminal 62 ' overcomes the elastic force of the elastic member 63 ' and moves toward the first terminal 61 ' under the magnetic force of the magnet 36, so that the second terminal 62 ' contacts and is connected to the first terminal 61 ', when the magnetic switch 6 ' is turned on, the main switch is pressed, the chain saw can be normally started, and the magnet 36 arranged in an arc shape enables the magnet 36 to always trigger and turn on the magnetic switch 6 ' during the rotation of the shield assembly 3 ' relative to the housing 1 '.

When the shield assembly 3 ' is not mounted on the housing 1 ', the second terminal 62 ' is kept separated from the first terminal 61 ' by the elastic force of the elastic member 63 ', the magnetic switch 6 ' cannot be turned on, and the chain saw cannot be normally started by pressing the main switch, so that the use safety of the chain saw is improved, and the injury of a user caused by using the chain saw without mounting the shield assembly 3 ' is avoided.

Referring to fig. 8, the housing 1 'includes a baffle 15 extending from the rotation shaft 64' along the second terminal 62 'and an inwardly concave slot 16, the second terminal 62' abuts against the baffle 15, one end of the elastic member 63 'is accommodated in the slot 16, and the other end abuts against the second terminal 62'.

According to the invention, the auxiliary switch connected with the main switch 5 in series is arranged on the chain saw 100, and the auxiliary switch is always triggered and conducted in the process that the shield assembly 3 rotates relative to the shell 1, so that the chain saw 100 can normally run only under the condition that the shield assembly 3 is installed on the shell 1, the use safety of the chain saw 100 is greatly improved, and the injury caused by using the chain saw 100 under the condition that a user does not install the shield assembly 3 is effectively avoided.

The present invention is not limited to the above-described embodiments. One of ordinary skill in the art will readily recognize that there are numerous other alternatives to the chainsaw of the present invention without departing from the spirit and scope of the invention. The protection scope of the present invention is subject to the content of the claims.

Claims

1. A chain saw is provided with a guide plate, the chain saw comprises a shell, a motor assembly arranged in the shell, a shield assembly rotatably connected to the front end of the shell, a holding part connected to the shell and a main switch arranged on the holding part, the guide plate is fixed to the front end of the shell, the shield assembly is located on the upper side of the guide plate and extends to the front end part of the guide plate, and the main switch controls starting and stopping of the motor assembly; the method is characterized in that: the chain saw comprises an auxiliary switch mounted in the housing, the auxiliary switch being connected in series with the main switch, the shield assembly always activating and conducting the auxiliary switch during rotation of the shield assembly relative to the housing.

2. The chain saw as recited in claim 1, wherein: the shield assembly comprises a shield body at least partially shielding the guide plate and a connecting part connected to the rear end of the shield body, and the shield assembly is connected to the shell through the connecting part.

3. The chain saw as recited in claim 2, wherein: the guard shield subassembly is located including wearing to establish connecting portion with the screw and the cover of casing the torsional spring of screw periphery, torsional spring connect in connecting portion with between the casing, the guard shield subassembly winds the screw carries out the pivot.

4. The chain saw as recited in claim 3, wherein: the auxiliary switch is a contact type microswitch, the shield assembly comprises a contact surface abutted against the microswitch, the contact surface is formed on the rear end surface of the connecting part, and the contact surface is arranged in an arc shape; in the process that the shield assembly rotates relative to the shell, the contact surface always presses against and triggers the micro switch to be switched on.

5. The chain saw as recited in claim 3, wherein: the auxiliary switch is a non-contact magnetic switch, the shield assembly comprises a magnet arranged at the rear end of the connecting part, and the magnet is arranged on the outer peripheral side of the connecting part in an arc shape; and in the process that the protective cover component rotates relative to the shell, the magnet is always triggered to conduct the magnetic switch.

6. The chain saw as recited in claim 5, wherein: the magnetic switch comprises a first terminal fixed on the shell, a second terminal movably connected to the shell and an elastic piece abutting against the second terminal, when the magnetic switch is conducted, the second terminal is connected to the first terminal, and the elastic piece biases the second terminal towards the direction far away from the first terminal.

7. The chain saw as recited in claim 6, wherein: the magnetic switch includes a shaft mounted to the housing, and the second terminal is connected to and pivots about the shaft.

8. The chain saw as recited in claim 7, wherein: the first terminal is located between the magnet and the second terminal.

9. The chain saw as recited in claim 8, wherein: the housing includes a baffle extending from the shaft along the second terminal, the second terminal abutting against the baffle.

10. The chain saw as recited in claim 9, wherein: the shell comprises an inwards concave clamping groove, one end of the elastic piece is contained in the clamping groove, and the other end of the elastic piece is abutted to the second terminal.