Portable multifunctional electric chain saw

Abstract

The utility model relates to the field of electric tools, and discloses a portable multifunctional electric chain saw which comprises a grip, a rear shell is mounted at the top end of the grip, a battery is mounted at the bottom end of the grip, a front shell is mounted at the front end of the rear shell, a saw blade is mounted at the right end of the rear shell, and a saw chain is slidably connected to the outer wall of the saw blade. A protection plate is installed at the top end of the rear shell, a motor is installed at the position, close to the left end, of the inner wall of the rear shell, a starting wheel is fixedly connected to the right end of an output shaft of the motor, and a first transmission assembly is arranged at the position, close to the right end of the motor, of the inner wall of the rear shell. A second transmission assembly is arranged at the right end, close to the first transmission assembly, of the inner wall of the rear shell. According to the utility model, through the arrangement of the first transmission assembly and the second transmission assembly, when the cutting operation is carried out, the resistance generated by a material is firstly transmitted to the third transmission assembly, and then is transmitted to the second transmission assembly through the third transmission assembly.

Description

Technical Field

[0001] The utility model relates to the field of electric tools, in particular to a portable multifunctional electric chain saw. Background Art

[0002] The electric chain saw is a common power tool that can be used to cut various types of materials. Its main body is mainly composed of components such as a motor, a handle, a battery, and a saw chain. The overall device is small and convenient, and is very convenient to use. It is used in many places.

[0003] When using an existing electric chain saw, a motor usually drives a starting wheel to rotate, which in turn drives a set of bevel gears to rotate an output wheel, and finally the output wheel drives the saw chain to rotate. In this way, when cutting hard materials, the resistance generated by the saw chain will be directly transmitted to the bevel gear, and the bevel gear will directly transmit the resistance to the starting wheel, which may cause the starting wheel to stop rotating. Therefore, a portable multi-functional electric chain saw is proposed to solve the above problem. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a portable multifunctional electric chain saw, which aims to improve the problem in the prior art that "the starting wheel of the existing portable electric chain saw is prone to stalling when cutting hard materials."

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a portable multifunctional electric chain saw, comprising a handle, a rear shell being installed at the top end of the handle, a battery being installed at the bottom end of the handle, a front shell being installed at the front end of the rear shell, a saw blade being installed at the right end of the rear shell, a saw chain being slidably connected to the outer wall of the saw blade, a protective plate being installed at the top end of the rear shell, a motor being installed at the inner wall of the rear shell near the left end, a starting wheel being fixedly connected to the right end of the motor output shaft, a first transmission assembly being provided on the inner wall of the rear shell near the right end of the motor, a second transmission assembly being provided on the inner wall of the rear shell near the right end of the first transmission assembly, a third transmission assembly being provided on the inner wall of the rear shell near the right end of the second transmission assembly, and the third transmission assembly being meshed with the saw chain.

[0006] As a further description of the above technical solution:

[0007] The second transmission assembly includes a transverse shaft, which is rotatably connected to the inner wall of the rear housing. The left end of the transverse shaft is fixedly connected to a first transmission wheel, and the right end of the transverse shaft is fixedly connected to a second transmission wheel.

[0008] As a further description of the above technical solution:

[0009] The starting wheel, the first transmission wheel and the second transmission wheel are bevel gears of the same type with the same parameters.

[0010] As a further description of the above technical solution:

[0011] The first transmission assembly includes a support shaft 1, which is rotatably connected to the top of the rear shell, and a bevel gear 1 is fixedly connected to the outer wall of the support shaft 1. The bevel gear 1 is engaged with the starting wheel, and the bevel gear 1 is engaged with the transmission wheel 1.

[0012] As a further description of the above technical solution:

[0013] The third transmission assembly includes a second support shaft, which is rotatably connected to the inner wall of the rear housing. The outer wall of the second support shaft is fixedly connected to a second bevel gear near the front end, and the second bevel gear is meshed with the second transmission wheel.

[0014] As a further description of the above technical solution:

[0015] An output wheel is fixedly connected to the outer wall of the bevel gear 2 near the rear end, and the output wheel is meshed with the saw chain.

[0016] As a further description of the above technical solution:

[0017] The bevel gear 1 and the bevel gear 2 are the same type of bevel gears with the same parameters.

[0018] As a further description of the above technical solution:

[0019] An oil pot is installed on the inner wall of the rear shell near the right end.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the present invention, by setting the first transmission assembly and the second transmission assembly, when performing a cutting operation, the resistance generated by the material will first be transmitted to the third transmission assembly, and then transmitted to the second transmission assembly by the third transmission assembly. Such multi-stage transmission can reduce the direct resistance to the motor and reduce the probability of the motor stalling.

[0022] 2. In the present invention, by setting up the first transmission assembly, while the support shaft 1 supports the rotation of the bevel gear 1, since the rear end of the support shaft 1 does not need to be installed with an output wheel, when other components requiring power drive need to be installed inside the device, the support shaft 1 can be used for driving, and the subsequent scalability of the overall device is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the overall device of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the first transmission component in the present utility model.

[0026] Legend:

[0027] 1. Handle; 2. Battery; 3. Front housing; 4. Rear housing; 5. Saw blade; 6. Saw chain; 7. Protective plate; 8. Oil can; 9. Motor; 10. Starting wheel; 11. First transmission assembly; 111. Support shaft 1; 112. Bevel gear 1; 12. Second transmission assembly; 121. Horizontal shaft; 122. Transmission wheel 1; 123. Transmission wheel 2; 13. Third transmission assembly; 131. Support shaft 2; 132. Bevel gear 2; 133. Output wheel. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a portable multifunctional electric chain saw, comprising a handle 1 for facilitating the operator to hold the entire device, a rear shell 4 for supporting a saw blade 5 is installed at the top of the handle 1, a battery 2 for providing power to the entire device is installed at the bottom end of the handle 1, a front shell 3 for wrapping the rear shell 4 is installed at the front end of the rear shell 4, a saw blade 5 for supporting the rotation of a saw chain 6 is installed at the right end of the rear shell 4, the outer wall of the saw blade 5 is slidably connected to the saw chain 6 for cutting materials, and a protective plate 7 for protecting the operator is installed at the top of the rear shell 4, which can be used to block flying materials, thereby preventing the operator from The inner wall of the rear shell 4 is provided with a motor 9 for providing power for cutting near the left end, and the right end of the output shaft of the motor 9 is fixedly connected to the starting wheel 10 for outputting power. The inner wall of the rear shell 4 is provided with a first transmission assembly 11 for transmitting the torque of the motor 9 near the right end of the motor 9, and the inner wall of the rear shell 4 is provided with a second transmission assembly 12 for connecting the first transmission assembly 11 and the third transmission assembly 13 near the right end of the first transmission assembly 11. The inner wall of the rear shell 4 is provided with a third transmission assembly 13 for driving the saw chain 6 to rotate near the right end of the second transmission assembly 12, and the third transmission assembly 13 is engaged with the saw chain 6.

[0030] Reference Figure 1 - Figure 3The second transmission assembly 12 includes a horizontal shaft 121 for supporting the entire second transmission assembly 12. The horizontal shaft 121 is rotatably connected to the inner wall of the rear housing 4. The left end of the horizontal shaft 121 is fixedly connected to a transmission wheel 122 for receiving power, and the right end of the horizontal shaft 121 is fixedly connected to a transmission wheel 2 123 for transmitting power. The starting wheel 10, the transmission wheel 122, and the transmission wheel 2 123 are the same type of bevel gears with the same parameters. The first transmission assembly 11 includes a support shaft 111 for supporting the rotation of the bevel gear 112. The support shaft 111 is rotatably connected to the top of the rear housing 4. The support shaft 111 only plays a role in the overall device. Gear 112 provides a supporting effect, but when other moving elements need to be added inside the overall device, a transmission wheel can be added to the outer wall of the support shaft 111 near the rear end to provide power for the moving elements. In this way, there is no need to install an additional power source inside the device. The outer wall of the support shaft 111 is fixedly connected with a bevel gear 112 for receiving the rotation output by the starting wheel 10. The bevel gear 112 is engaged with the starting wheel 10, and the bevel gear 112 is engaged with the transmission wheel 122. Since the starting wheel 10 and the transmission wheel 122 are the same type of bevel gears with the same parameters, the torque size will not change when transmitting torque.

[0031] Reference Figure 1 - Figure 3 The third transmission assembly 13 includes a support shaft 2 131 for supporting the entire third transmission assembly 13. The support shaft 2 131 is rotatably connected to the inner wall of the rear housing 4. The support shaft 1 111 and the support shaft 2 131 are connected to the rear housing 4 through a rotating bearing and can rotate smoothly during movement. The outer wall of the support shaft 2 131 is fixedly connected to a bevel gear 2 132 for receiving power near the front end position. The bevel gear 2 132 is meshed with the transmission wheel 2 123. The bevel gear 1 112 and the bevel gear 2 132 are the same type of bevel gears with the same parameters. Since the second transmission assembly 12 itself The transmission ratio is 1, and the bevel gear 1 112 and the bevel gear 2 132 are the same type of bevel gears with the same parameters, so the bevel gear 1 112 and the bevel gear 2 132 have the same rotation speed and opposite rotation direction during operation. The outer wall of the bevel gear 2 132 is fixedly connected near the rear end with an output wheel 133 for driving the saw chain 6 to rotate. The output wheel 133 is engaged with the saw chain 6. The inner wall of the rear housing 4 is installed near the right end with an oil pot 8 for storing lubricating oil. The oil pot 8 and the motor 9 are both existing technologies and can be implemented by people in this field. Due to the existing technology, this case will not be described in detail.

[0032] Working principle: When the motor 9 drives the starting wheel 10 to rotate, the starting wheel 10 will drive the bevel gear 1 112 to rotate through engagement, and the bevel gear 1 112 will drive the transmission wheel 1 122 to rotate. The rotation of the transmission wheel 122 will drive the horizontal shaft 121 and the transmission wheel 2 123 to rotate synchronously. The rotation of the transmission wheel 2 123 will drive the bevel gear 2 132 to rotate. The rotation of the bevel gear 2 132 can drive the support shaft 2 131 and the output wheel 133 to rotate, thereby driving the saw chain 6 to rotate around the outer wall of the saw blade 5. When the saw chain 6 starts to rotate, you can hold the handle 1 to drive the entire device to perform cutting operations.

[0033] During the cutting operation, when the saw chain 6 contacts the material, resistance will be generated between the material and the saw chain 6. The resistance will be transmitted to the support shaft 2 131 through the engagement of the saw chain 6 and the output wheel 133. The support shaft 2 131 will transmit the resistance to the horizontal shaft 121 through the engagement of the bevel gear 2 132 and the transmission wheel 2 123. The horizontal shaft 121 will transmit the resistance to the starting wheel 10 through the engagement of the transmission wheel 122 and the bevel gear 1 112. Finally, the resistance will be transmitted to the motor 9 through the starting wheel 10. Such multi-stage transmission can weaken the direct interference of the resistance on the rotation of the motor 9, thereby reducing the probability of the motor 9 stopping.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable multifunctional electric chain saw, comprising a handle (1), characterized in that: The top of the handle (1) is provided with a rear shell (4), the bottom of the handle (1) is provided with a battery (2), the front end of the rear shell (4) is provided with a front shell (3), the right end of the rear shell (4) is provided with a saw blade (5), the outer wall of the saw blade (5) is slidably connected to a saw chain (6), the top of the rear shell (4) is provided with a protective plate (7), the inner wall of the rear shell (4) is provided with a motor (9) near the left end, the right end of the output shaft of the motor (9) is fixedly connected to a starting wheel (10), the inner wall of the rear shell (4) is provided with a first transmission assembly (11) near the right end of the motor (9), the inner wall of the rear shell (4) is provided with a second transmission assembly (12) near the right end of the first transmission assembly (11), the inner wall of the rear shell (4) is provided with a third transmission assembly (13) near the right end of the second transmission assembly (12), and the third transmission assembly (13) is meshed with the saw chain (6).

2. The portable multifunctional electric chain saw according to claim 1, characterized in that: The second transmission assembly (12) includes a transverse shaft (121), the transverse shaft (121) is rotatably connected to the inner wall of the rear housing (4), the left end of the transverse shaft (121) is fixedly connected to a transmission wheel 1 (122), and the right end of the transverse shaft (121) is fixedly connected to a transmission wheel 2 (123).

3. The portable multifunctional electric chain saw according to claim 2, characterized in that: The starting wheel (10), the first transmission wheel (122), and the second transmission wheel (123) are bevel gears of the same type with the same parameters.

4. The portable multifunctional electric chain saw according to claim 2, characterized in that: The first transmission assembly (11) includes a support shaft (111), the support shaft (111) is rotatably connected to the top end of the rear housing (4), the outer wall of the support shaft (111) is fixedly connected to a bevel gear (112), the bevel gear (112) is meshed with the starting wheel (10), and the bevel gear (112) is meshed with the transmission wheel (122).

5. The portable multifunctional electric chain saw according to claim 4, characterized in that: The third transmission assembly (13) includes a second support shaft (131), the second support shaft (131) is rotatably connected to the inner wall of the rear housing (4), and the outer wall of the second support shaft (131) is fixedly connected to a second bevel gear (132) near the front end, and the second bevel gear (132) is meshed with the second transmission wheel (123).

6. The portable multifunctional electric chain saw according to claim 5, characterized in that: An output wheel (133) is fixedly connected to the outer wall of the second bevel gear (132) near the rear end, and the output wheel (133) is meshed with the saw chain (6).

7. The portable multifunctional electric chain saw according to claim 5, characterized in that: The bevel gear 1 (112) and the bevel gear 2 (132) are bevel gears of the same type with the same parameters.

8. The portable multifunctional electric chain saw according to claim 1, characterized in that: An oil pot (8) is installed on the inner wall of the rear housing (4) near the right end.

Images