An integrated lubrication and heat dissipation integrated electric saw

Abstract

The utility model relates to an integrated lubrication and heat dissipation integrated electric saw, it includes chain, chain guide plate, still includes electric saw casing, the electric saw casing is equipped with annular baffle, the annular baffle is provided with fan in, fan and outer rotor brushless motor transmission connection, the oil pot is provided with in the electric saw casing, the oil pot is connected with the outlet oil pipe and air inlet oil pipe respectively, the air inlet oil pipe is away from the one end of oil pot and is towards fan air outlet, the outlet oil pipe is away from the one end of oil pot and extends to the contact part of chain and chain guide plate, the utility model has the effect that compact structure, heat dissipation lubrication efficient cooperation, and can significantly improve the reliability and service life of electric saw under the effect of high strength operation.

Description

Technical Field

[0001] This utility model relates to the field of forest fire fighting technology, and in particular to an integrated electric saw that combines lubrication and heat dissipation. Background Technology

[0002] In forest fire fighting and emergency rescue operations, chainsaws are essential tools for clearing obstacles, felling trees, and creating firebreaks. Their reliability and continuous operating capability directly affect firefighting efficiency and operational safety. Current working environments are typically harsh and demanding, requiring chainsaws to operate continuously for extended periods. High-speed friction between the chain and guide plates generates heat, while the motor itself also produces significant heat. Insufficient heat dissipation can lead to excessive temperature rise in the motor and chain, affecting overall machine performance and creating safety hazards.

[0003] Most existing chainsaws use a separate lubrication and cooling system, which means that an independent oil pump supplies oil and is used in conjunction with a fan or heat sink for cooling. This structure has complex parts, occupies a lot of space, and lacks synergy between lubrication and cooling functions, making it difficult to meet the needs of high-intensity, long-term operations.

[0004] Therefore, there is an urgent need to develop an integrated lubrication and heat dissipation structure for chainsaws, so as to achieve efficient cooling and continuous lubrication of the motor and chain while ensuring system compactness, thereby improving the reliability and operational safety of the equipment in forest fire fighting environments. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an integrated lubrication and heat dissipation chainsaw, which has a compact structure, efficient and coordinated heat dissipation and lubrication, and can significantly improve the reliability and service life of the chainsaw under high-intensity operation.

[0006] The above-mentioned utility model objective is achieved through the following technical solution: An integrated lubrication and heat dissipation chainsaw includes a chain, a chain guide plate, and a chainsaw housing. The chainsaw housing is provided with an annular baffle, and a fan is installed inside the annular baffle. The fan is drivenly connected to an external rotor brushless motor. The chainsaw housing is equipped with an oil reservoir, which is connected to an outlet oil pipe and an air inlet oil pipe. The end of the air inlet oil pipe away from the oil reservoir faces the air outlet of the fan. The end of the outlet oil pipe away from the oil reservoir extends to the contact area between the chain and the chain guide plate.

[0007] The above technical solution utilizes the airflow generated by the rotation of a single fan to simultaneously achieve forced air cooling of the external rotor brushless motor and create positive pressure in the oil reservoir to drive the lubricating oil. The lubrication and heat dissipation functions are integrated into a compact module, reducing the number of parts and space occupation, and significantly improving the reliability of the chainsaw under high-intensity operation.

[0008] As a further technical solution of this utility model: a ventilation groove is provided on the annular baffle corresponding to the end of the air intake oil pipe facing the fan outlet.

[0009] The above technical solution provides a clear and stable high-pressure airflow path for the intake oil pipe by opening a dedicated ventilation slot on the annular baffle, optimizes the airflow guidance, and ensures a stronger and more stable positive pressure effect on the oil reservoir, thereby improving the continuity of lubrication output.

[0010] As a further technical solution of this utility model: the end of the air intake oil pipe facing the fan outlet is located in the ventilation slot, and the air intake oil pipe is arranged in a horizontal direction.

[0011] By setting the intake oil pipe port in the ventilation slot and arranging it horizontally, the high-pressure airflow generated by the fan can be received most effectively, reducing air pressure loss and further enhancing the utilization efficiency of the positive pressure effect, thus ensuring that the lubricating oil is pushed stably and smoothly to the chain and guide plate.

[0012] As a further technical solution of this utility model: the end of the outlet oil pipe away from the oil reservoir is fixedly connected to the electric saw housing by an outlet oil pipe fixing component.

[0013] The above technical solution reliably fixes the outlet oil pipe using outlet oil pipe fixing components, preventing the oil pipe from shifting or loosening due to equipment vibration. This ensures that the lubricating oil can be accurately and stably delivered to the friction contact parts between the chain and the guide plate, improving the accuracy and reliability of lubrication.

[0014] As a further technical solution of this utility model: the outer rotor brushless motor is provided with a motor housing, and a rectangular groove is opened at the bottom of the motor housing.

[0015] By using the above technical solution, a rectangular slot is opened at the bottom of the motor housing, which effectively increases the intake cross-sectional area of ​​cooling air, enhances the intake efficiency of the fan and the circulation capacity of the cooling airflow, thereby significantly improving the cooling effect of the external rotor brushless motor and preventing its performance degradation due to overheating.

[0016] As a further technical solution of this utility model: a heat dissipation shell is fixedly connected to the motor housing, and a heat dissipation ventilation groove is provided on the heat dissipation shell.

[0017] The above technical solution involves setting up ventilation slots on the heat dissipation shell, which increases the airflow exhaust channel and effectively improves the exhaust and ventilation capacity of the heat dissipation system. Working together with the rectangular slots on the motor housing, it enhances the forced convection cooling effect and ensures the thermal stability of the motor during long-term operation.

[0018] As a further technical solution of this utility model: the oil can has an opening on its side.

[0019] By designing the oil can with a side opening structure through the above technical solution, spatial interference with other internal components of the chainsaw is avoided, making the overall structure more compact. At the same time, it greatly facilitates the daily replenishment and maintenance of lubricating oil and improves the ease of use of the equipment.

[0020] In summary, this utility model has at least one of the following beneficial technical effects: 1. This utility model discloses an integrated lubrication and heat dissipation chainsaw. By integrating lubrication and heat dissipation functions into an integrated module driven by a single fan, the fan rotation simultaneously achieves forced air cooling of the motor and positive pressure delivery of lubricating oil, which significantly simplifies the structure, reduces the number of parts and space occupation, and fundamentally improves the reliability and energy utilization efficiency of the chainsaw under high-intensity and long-term operation.

[0021] 2. This utility model discloses an integrated lubrication and heat dissipation electric saw. Through a series of structural designs such as optimized ventilation slots, horizontal air intake oil pipes, rectangular slots in the motor housing, and ventilation slots in the heat dissipation housing, it forms an efficient airflow guidance and circulation system, which greatly enhances the intake and exhaust efficiency of cooling airflow and ensures the stability and continuity of lubrication positive pressure, thereby improving the overall efficiency and stability of the heat dissipation and lubrication system.

[0022] 3. This utility model discloses an integrated lubrication and heat dissipation electric saw. It ensures precise oil delivery through an outlet oil pipe fixing component and adopts a side-opening oil can design. While ensuring reliable and uninterrupted lubrication, it greatly facilitates the replenishment and maintenance of lubricating oil, effectively improving the ease of use and long-term maintainability of the equipment in actual operation. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of an integrated lubrication and heat dissipation electric saw according to the present invention.

[0024] Figure 2 This is a three-dimensional structural diagram of an integrated lubrication and heat dissipation electric saw according to the present invention.

[0025] Figure 3 for Figure 1 An exploded view of the internal structure of the motor casing.

[0026] Figure 4 for Figure 3 Schematic diagram of gas flow in a lubrication system.

[0027] Figure 5 for Figure 3Schematic diagram of gas flow in a heat dissipation system.

[0028] Figure 6 for Figure 1 Schematic diagram of gas flow in the heat dissipation casing.

[0029] Reference numerals: 1. Chain; 2. Chain guide plate; 3. Chain tensioning device; 4. Horizontal handle of the chainsaw; 5. Chainsaw switch; 6. Longitudinal handle of the chainsaw; 7. Chainsaw housing; 8. Annular baffle; 81. Ventilation slot; 9. Outlet oil pipe fixing piece; 10. Fan; 11. Fan end cover; 12. Oil can; 13. Outlet oil pipe; 14. Inlet oil pipe; 15. Oil can end cover; 16. External rotor brushless motor; 17. Motor housing; 171. Rectangular slot; 18. Heat dissipation housing. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Example

[0033] Reference Figure 1 and Figure 2This utility model discloses an integrated lubrication and heat dissipation electric saw, which includes a chain 1 for cutting, a chain guide plate 2, and a chain tensioning device 3 for adjusting the chain tension, a horizontal handle 4 and a vertical handle 6 for easy gripping and control by the operator, and an electric saw switch 5 for controlling the start and stop of the electric saw, which constitutes the basic operation and cutting framework of the electric saw.

[0034] Reference Figure 3 To achieve the core function of "integrated lubrication and heat dissipation", the chainsaw is also equipped with an integrated lubrication and heat dissipation module. This module is the core carrier for realizing the function. Specifically, it includes the chainsaw housing 7, the outlet oil pipe fixing component 9 for fixing the oil circuit, the fan 10 for providing airflow power, the fan end cover 11 for protecting the fan, the oil can 12 for storing lubricating oil, the outlet oil pipe 13 for conveying lubricating oil and the air intake oil pipe 14 for guiding airflow, the oil can end cover 15 for sealing the oil can, the external rotor brushless motor 16 for driving the fan, the motor housing 17 for protecting the motor, and the heat dissipation housing 18 for assisting heat dissipation. All components work together to support the dual functions of lubrication and heat dissipation.

[0035] Reference Figure 4 An annular baffle 8 is provided on the casing 7 of the electric saw. The annular baffle 8 surrounds the fan 10 to form a relatively closed rotation space, which provides constraint for the direction of airflow. The fan 10 is connected to the external rotor brushless motor 16 and can stably drive the fan 10 to rotate at high speed after the external rotor brushless motor 16 is started. The fan end cover 11 protects the fan 10.

[0036] Reference Figure 3 and Figure 4 The casing 7 of the electric saw is also equipped with an oil can 12. The oil can 12 is sealed by an oil can end cap 15. The oil can 12 is connected to an outlet oil pipe 13 and an air inlet oil pipe 14. The end of the air inlet oil pipe 14 away from the oil can 12 faces the air outlet of the fan 10. A ventilation groove 81 is provided on the annular baffle 8 corresponding to the end of the air inlet oil pipe 14 facing the air outlet of the fan 10. The ventilation groove 81 is opened at a 45° angle between the negative x-axis and the positive y-axis. The groove is 10 mm wide and 5 mm deep, which is used to form a stable airflow guiding channel.

[0037] The end of the intake oil pipe 14 facing the air outlet of the fan 10 is located in the ventilation slot 81 and arranged in a horizontal direction to ensure that the airflow generated by the fan 10 enters the oil pipe accurately and reduce air pressure loss. The end of the outlet oil pipe 13 away from the oil can 12 extends to the contact part between the chain 1 and the chain guide plate 2, and the end of the outlet oil pipe 13 away from the oil can 12 is fixedly connected to the electric saw housing 7 through the outlet oil pipe fixing part 9, which can effectively prevent the outlet oil pipe 13 from shifting due to the vibration of the electric saw operation and ensure the accuracy of lubricating oil delivery.

[0038] Reference Figure 1 and Figure 3The external rotor brushless motor 16 is fitted with a motor housing 17. A rectangular slot 171 is formed at the bottom of the motor housing 17 to increase the intake of cooling air. A heat dissipation housing 18 is fixedly connected to the rear end of the motor housing 17. (Refer to...) Figure 6 The heat dissipation housing 18 has heat dissipation ventilation slots distributed on its side walls and end faces. The side walls of the heat dissipation housing 18 have two rectangular heat dissipation ventilation slots, and the ends have multiple elliptical heat dissipation ventilation slots, which, together with the airflow generated by the fan 10, form an efficient heat dissipation airflow channel.

[0039] Reference Figure 3 The oil can 12 adopts a side opening design, which avoids interference with other internal components and facilitates the filling and maintenance of lubricating oil. At the same time, the oil can 12 is equipped with a matching oil can end cap 15.

[0040] Reference Figure 4 The fan 10 is installed inside the annular baffle 8 of the chainsaw housing 7 and is directly driven by the external rotor brushless motor 16 to rotate at high speed. When the fan 10 rotates, it draws in cooling air from the air inlet at the bottom of the chainsaw housing 7 under centrifugal force. Under the specific contour constraint and guidance of the annular baffle 8, a stable local high-pressure cyclone zone is formed at the ventilation slot 81 opened on its upper left. This high-pressure airflow is directed into the upper sealed space of the oil reservoir 12 through the air inlet oil pipe 14 sealed to the ventilation slot 81. The continuous positive pressure environment formed inside the oil reservoir 12 acts on the lubricating oil surface, thereby stably pressing out the lubricating oil through the outlet oil pipe 13 and accurately delivering it to the contact area of ​​the friction pair between the chain 1 and the chain guide plate 2, realizing a continuous and automatic lubrication process.

[0041] Reference Figure 5 While the lubrication system is operating, another part of the airflow generated by the rotation of the fan 10, under the combined action of the structural guidance of the fan blades, the fitting constraint of the fan end cover 11, and the air duct formed by the enclosed ring baffle 8 of the electric saw housing 7, forms a concentrated axial cooling airflow. This cooling airflow flows backward in the horizontal direction, first passing through the housing surface and internal gaps of the external rotor brushless motor 16, directly carrying away the large amount of heat generated by the external rotor brushless motor 16 during operation; at the same time, the airflow enters and fills the motor housing 17 that surrounds the external rotor brushless motor 16, and then flows into the internal space of the heat dissipation housing 18 connected to the motor housing 17, and finally is efficiently discharged to the external environment through several heat dissipation ventilation slots opened on the heat dissipation housing 18, thereby achieving forced convection cooling of the external rotor brushless motor 16 and ensuring the thermal stability of the external rotor brushless motor 16 during long-term operation.

[0042] The implementation principle of this utility model is as follows: Using an external rotor brushless motor 16 as the power source, the fan 10 rotates at high speed within the annular baffle 8 of the chainsaw housing 7, simultaneously achieving lubrication and heat dissipation. For lubrication, the airflow generated by the fan 10 precisely enters the intake oil pipe 14 through the ventilation slot 81, creating positive pressure within the oil reservoir 12 and pushing the lubricating oil along the outlet oil pipe 13. The outlet oil pipe fixing component 9 ensures the stability of the outlet oil pipe 13, allowing the lubricating oil to accurately reach the contact area between the chain 1 and the chain guide plate 2. For heat dissipation, the airflow generated by the fan 10 draws in more cooling air through the rectangular slot 171 at the bottom of the motor housing 17. After flowing through the external rotor brushless motor 16, it is discharged through the heat dissipation ventilation slots on the side wall and end face of the heat dissipation housing 18, enhancing heat dissipation and preventing debris from entering, thus ensuring the motor's thermal stability. This utility model integrates lubrication and heat dissipation functions into a single module through an integrated design. The fan rotation simultaneously achieves lubrication and heat dissipation, and both work collaboratively through the same airflow source, significantly improving the reliability and energy efficiency of the chainsaw under high-intensity operation.

[0043] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. An integrated electric saw with combined lubrication and heat dissipation, comprising a chain (1) and a chain guide plate (2), characterized in that, It also includes a chainsaw housing (7), the chainsaw housing (7) is provided with an annular baffle (8), a fan (10) is provided inside the annular baffle (8), and the fan (10) is connected to an external rotor brushless motor (16) for transmission. The chainsaw housing (7) is provided with an oil reservoir (12), which is connected to an outlet oil pipe (13) and an air inlet oil pipe (14). The end of the air inlet oil pipe (14) away from the oil reservoir (12) is directed toward the air outlet of the fan (10). The end of the outlet oil pipe (13) away from the oil reservoir (12) extends to the contact area between the chain (1) and the chain guide plate (2).

2. The integrated lubrication and heat dissipation electric saw according to claim 1, characterized in that, A ventilation slot (81) is provided on the annular baffle (8) at the end of the air intake pipe (14) facing the air outlet of the fan (10).

3. The integrated lubrication and heat dissipation electric saw according to claim 2, characterized in that, The end of the intake oil pipe (14) facing the air outlet of the fan (10) is located in the ventilation slot (81), and the intake oil pipe (14) is arranged in a horizontal direction.

4. The integrated lubrication and heat dissipation electric saw according to claim 1, characterized in that, The end of the outlet oil pipe (13) away from the oil reservoir (12) is fixedly connected to the electric saw housing (7) via the outlet oil pipe fastener (9).

5. The integrated lubrication and heat dissipation electric saw according to claim 1, characterized in that, The outer rotor brushless motor (16) is provided with a motor housing (17) on the outside, and a rectangular groove (171) is provided at the bottom of the motor housing (17).

6. The integrated lubrication and heat dissipation electric saw according to claim 5, characterized in that, The motor housing (17) is fixedly connected to a heat dissipation housing (18), and heat dissipation ventilation grooves are provided on the side wall and end face of the heat dissipation housing (18).

7. The integrated lubrication and heat dissipation electric saw according to claim 1, characterized in that, The oil container (12) has an opening on its side.

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