Chain saw-bevel gear 90-degree transmission structure

Abstract

The utility model relates to the technical field of chain saw motors, in particular to a chain saw-bevel gear 90-degree transmission structure which comprises a shell, a motor and a reduction gear assembly connected with the output end of the motor are installed in the shell, and the shell is composed of an upper cover and a lower cover which are combined together in a butt joint mode. The butt joint surfaces of the upper cover and the lower cover are respectively provided with an outer step and an inner step which are mutually embedded, the corresponding positions of the outer walls of the upper cover and the lower cover are respectively provided with a butt joint piece I and a butt joint piece II, and the butt joint positions of the butt joint piece I and the butt joint piece II are respectively provided with a plug and a slot. Compared with a traditional method, according to the technical scheme, the reduction gear assembly is used for being connected with the output end of the motor, high-speed low torque output by the motor can be converted into low-speed high torque through the transmission ratio of the bevel gear to the face gear, the load requirement is met, meanwhile, the reduction gear can provide larger output power, and the service life is prolonged. And the motor is suitable for a wider application scene.

Description

Technical Field

[0001] This utility model relates to the field of chainsaw motor technology, specifically to a chainsaw-conical tooth 90-degree transmission structure. Background Technology

[0002] The chainsaw motor is the power source for the chainsaw. It is usually powered by an electric motor. The chainsaw motor converts electrical energy into mechanical energy, which drives the chain to rotate at high speed, thereby achieving the purpose of cutting wood, trees or other materials.

[0003] Patent document CN219812601U discloses a chainsaw, including a chainsaw housing, a drive motor, a saw blade chain, and a transmission mechanism disposed within the chainsaw housing. This solution reduces the impact of hot air generated by the motor rotation on the operator by providing a first air outlet corresponding to the first heat dissipation hole in the motor chamber, and the opening direction of the first air outlet is perpendicular to the extension direction of the handle.

[0004] Currently, chainsaws generally use a direct-drive motor to move the saw blade chain. While this structure simplifies the design and saves space and cost, it also limits the chainsaw's torque and output power. Simply increasing the motor power would lead to increased noise and vibration. Utility Model Content

[0005] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide a transmission structure of 90 degrees between chainsaw and bevel teeth, which solves the problem that the power and torque of the chainsaw motor using the current direct drive method are limited and cannot meet the requirements.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A transmission structure for a chainsaw with a 90-degree bevel tooth includes a housing, in which a motor and a reduction gear assembly connected to the output end of the motor are installed. The housing is composed of an upper cover and a lower cover that are joined together. The mating surfaces of the upper cover and the lower cover are respectively provided with mutually fitting outer steps and inner steps.

[0008] The outer walls of the upper cover and the lower cover are respectively provided with a first docking part and a second docking part. The abutting positions of the first docking part and the second docking part respectively form a plug and a slot. When the upper cover and the lower cover are combined, the plug is inserted into the slot and locked by screws.

[0009] The outer step, the inner step, the plug, and the slot are all made of elastic material.

[0010] Furthermore, the motor consists of a stator core and a rotor core mounted coaxially. The stator core is sleeved outside the rotor core, and a rotating shaft is installed at the center of the rotor core. Bearing one and bearing two are respectively sleeved at both ends of the rotating shaft.

[0011] Furthermore, the reduction gear assembly includes a drive shaft connected to the saw blade chain drive and a bevel gear installed at the end of the shaft. A face gear is coaxially mounted on the outer wall of the drive shaft, and the end face of the face gear has a gear ring that meshes with the bevel gear. Bearing three and bearing four are respectively sleeved at both ends of the drive shaft.

[0012] Furthermore, the inner cavity of the housing is respectively formed with grooves that match the bearing one, the bearing two, the bearing three and the bearing four.

[0013] Furthermore, both the upper cover and the lower cover have heat dissipation holes formed on their surfaces.

[0014] Furthermore, the inner walls of both the upper and lower covers have reinforcing ribs formed at the positions where the motor is installed.

[0015] Furthermore, the plug and the slot are circular, rectangular, square, or strip-shaped.

[0016] Furthermore, the upper cover and the lower cover are made of metal or plastic.

[0017] The beneficial effects of this utility model are:

[0018] Compared to traditional methods, this technical solution uses a reduction gear assembly connected to the motor's output end. Through the transmission ratio of bevel gears and face gears, the high-speed, low-torque output of the motor can be converted into low-speed, high-torque output to meet the load requirements. At the same time, the reduction gear can provide greater output power, making the motor suitable for a wider range of applications. Furthermore, by setting inner and outer steps, plugs, and slots with elastic material support at the joint between the upper and lower covers, the noise and vibration emitted by the motor when the chainsaw starts can be effectively reduced, optimizing the user experience. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention in its assembled state;

[0021] Figure 2 This is a cross-sectional view of the present invention in its assembled state;

[0022] Figure 3 This utility model provides a stereoscopic view of the upper and lower covers in a disassembled state. Figure 1;

[0023] Figure 4 This utility model provides a stereoscopic view of the upper and lower covers in a disassembled state. Figure 2 .

[0024] In the diagram: 1. Top cover; 11. Outer step; 2. Bottom cover; 21. Inner step; 3. Heat dissipation hole; 4. Stator core; 5. Shaft; 51. Rotor core; 52. Bearing 1; 53. Bearing 2; 54. Bevel gear; 6. Drive shaft; 61. Face gear; 62. Bearing 3; 63. Bearing 4; 7. Connecting part 1; 71. Plug; 8. Connecting part 2; 81. Slot; 9. Reinforcing rib. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0026] Example 1:

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a chainsaw transmission structure with a 90-degree bevel gear includes a housing, a motor installed inside the housing, and a reduction gear assembly connected to the output end of the motor.

[0028] like Figure 2 As shown, the motor consists of a stator core 4 and a rotor core 51 mounted coaxially. The stator core 4 is sleeved on the outside of the rotor core 51. A rotating shaft 5 is installed at the center of the rotor core 51. Bearing 1 52 and bearing 2 53 are respectively sleeved at both ends of the rotating shaft 5. When energized, the coil wound on the stator core 4 generates a magnetic field, and the rotor core 51 drives the rotating shaft 5 to rotate. Bearing 1 52 and bearing 2 53 are used to support and guide the rotational movement of the rotating shaft 5. The bearings can reduce the friction between the rotating shaft 5 and the housing, reduce energy loss, and can withstand the radial and axial loads on the rotating shaft 5, ensuring the stable operation of the rotating shaft 5. In addition, the bearings can also reduce vibration and noise, and extend the service life of the motor.

[0029] like Figure 2As shown, the reduction gear assembly includes a drive shaft 6 connected to the saw blade chain drive and a bevel gear 54 installed at the end of the rotating shaft 5. The drive shaft 6 is arranged perpendicularly to the rotating shaft 5. A face gear 61 is coaxially installed on the outer wall of the drive shaft 6. The end face of the face gear 61 has a toothed ring that meshes with the bevel gear 54. Bearings 62 and 63 are respectively sleeved at both ends of the drive shaft 6. The rotating shaft 5 drives the bevel gear 54 to rotate, and the face gear 61 that meshes with the bevel gear 54 drives the drive shaft 6 to rotate, thereby driving the saw blade chain to move, which can realize the cutting operation.

[0030] In this design, the inner cavity of the housing is formed with grooves that match bearing 1 52, bearing 2 53, bearing 3 62 and bearing 4 63, which simplifies the structure while providing reliable support for the above-mentioned bearings.

[0031] like Figure 3 , Figure 4 As shown, the housing consists of an upper cover 1 and a lower cover 2 that are joined together. The upper cover 1 and the lower cover 2 are made of metal or plastic. The mating surfaces of the upper cover 1 and the lower cover 2 are respectively provided with an outer step 11 and an inner step 21 that fit together to enhance the sealing of the housing. The outer walls of the upper cover 1 and the lower cover 2 are respectively provided with a first mating part 7 and a second mating part 8. The abutting positions of the first mating part 7 and the second mating part 8 respectively form a plug 71 and a slot 81. The plug 71 and the slot 81 are circular, rectangular, square or strip-shaped. When the upper cover 1 and the lower cover 2 are assembled, the plug 71 is inserted into the slot 81 and locked by screws.

[0032] In this design, heat dissipation holes 3 are formed on the surfaces of both the upper cover 1 and the lower cover 2 to improve the heat dissipation capacity of the motor.

[0033] In this design, the outer step 11, the inner step 21, the plug 71, and the slot 81 are all made of elastic materials, such as rubber and silicone. Since motor vibration and noise are usually related, the use of elastic materials at the joint between the upper cover 1 and the lower cover 2 improves the sealing performance and helps extend the service life of the motor. In addition, the elastic materials absorb energy, thereby reducing motor vibration.

[0034] This solution uses a reduction gear assembly connected to the output end of the motor. Through the transmission ratio of bevel gear 54 and face gear 61, the high-speed, low-torque output of the motor can be converted into low-speed, high-torque to meet the load requirements. At the same time, the reduction gear can provide greater output power, making the motor suitable for a wider range of applications. In addition, by setting the inner step 21, outer step 11, plug 71, and slot 81 with elastic material support at the joint of the upper cover 1 and the lower cover 2, the noise and vibration emitted by the motor when the chainsaw starts can be effectively reduced, optimizing the user experience.

[0035] Example 2:

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a chainsaw transmission structure with a 90-degree bevel gear includes a housing, a motor and a reduction gear assembly connected to the output end of the motor are installed inside the housing, and the housing is composed of an upper cover 1 and a lower cover 2 that are joined together. The mating surfaces of the upper cover 1 and the lower cover 2 are respectively provided with mutually fitting outer steps 11 and inner steps 21. Compared with Embodiment 1:

[0037] like Figure 4 As shown, reinforcing ribs 9 are formed on the inner walls of the upper cover 1 and the lower cover 2 corresponding to the positions where the motor is installed, thereby improving the overall strength of the housing.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The above description is merely an example and illustration of the present utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the present utility model.

Claims

1. A transmission structure for a chainsaw with a 90-degree bevel gear, comprising a housing, characterized in that, The housing contains a motor and a reduction gear assembly connected to the output end of the motor. The housing is composed of an upper cover and a lower cover that are joined together. The mating surfaces of the upper cover and the lower cover are respectively provided with mutually fitting outer steps and inner steps. The outer walls of the upper cover and the lower cover are respectively provided with a first docking part and a second docking part. The abutting positions of the first docking part and the second docking part respectively form a plug and a slot. When the upper cover and the lower cover are combined, the plug is inserted into the slot and locked by screws. The outer step, the inner step, the plug, and the slot are all made of elastic material.

2. The chainsaw-conical tooth transmission structure according to claim 1, characterized in that, The motor consists of a stator core and a rotor core mounted coaxially. The stator core is sleeved outside the rotor core. A rotating shaft is installed at the center of the rotor core, and bearing one and bearing two are respectively sleeved at both ends of the rotating shaft.

3. The chainsaw-conical tooth transmission structure according to claim 2, characterized in that, The reduction gear assembly includes a drive shaft connected to the saw blade chain drive and a bevel gear installed at the end of the drive shaft. A face gear is coaxially mounted on the outer wall of the drive shaft. The end face of the face gear has a toothed ring that meshes with the bevel gear. Bearing three and bearing four are respectively fitted at both ends of the drive shaft.

4. The chainsaw-conical tooth transmission structure according to claim 3, characterized in that, The inner cavity of the housing is formed with grooves that match the bearings one, two, three and four respectively.

5. The chainsaw-conical tooth transmission structure according to claim 1, characterized in that, Both the upper cover and the lower cover have heat dissipation holes formed on their surfaces.

6. The chainsaw-conical tooth transmission structure according to claim 1, characterized in that, The inner walls of both the upper and lower covers have reinforcing ribs at the locations where the motor is installed.

7. The chainsaw-conical tooth transmission structure according to claim 1, characterized in that, The plug and the slot are round, rectangular, square or strip-shaped.

8. The chainsaw-conical tooth transmission structure according to claim 1, characterized in that, The upper cover and the lower cover are made of metal or plastic.

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