A chain saw

Abstract

The utility model provides a chain saw, including casing, cutter, drive motor, battery pack and controller, is equipped with main handle in casing top, cutter includes chain saw and is used for supporting the cutter chain cutter plate, cutter plate is installed in casing, and extends to the front of casing, drive motor is contained in casing, is used for driving chain saw operation, battery pack is used for providing the electric energy to drive motor, controller is connected with drive motor electricity, defines a first reference surface perpendicular to chain saw height direction, along the height direction of chain saw, the projection of main handle on first reference surface at least partial with the projection of drive motor on first reference surface overlaps, the projection of drive motor on first reference surface is located respectively outside the projection of battery pack on first reference surface and the projection of controller on first reference surface, the projection of battery pack on first reference surface with the projection of controller on first reference surface at least partial overlaps, the utility model discloses can improve the fatigue feeling produced in the long -term operation process of user.

Description

Technical Field

[0001] This utility model relates to the field of garden tools, specifically to a chainsaw. Background Technology

[0002] Chainsaws are a common gardening tool used to cut trees and other materials. Electric chainsaws, lacking a fuel tank and complex fuel system, are generally lighter and therefore more popular. However, as the battery life of electric chainsaws has increased, the battery packs have become heavier, leading to a greater overall weight and potentially causing fatigue for users operating them for extended periods. Utility Model Content

[0003] This invention provides a chainsaw that can alleviate user fatigue during long-term operation.

[0004] To achieve the above and other related objectives, this utility model provides a chainsaw, including a housing, cutting tools, a drive motor, a battery pack, and a controller. A main handle is provided on the upper part of the housing. The cutting tools include a cutting chain and a blade plate for supporting the cutting chain. The blade plate is mounted on the housing and extends towards the front of the housing. The drive motor is housed within the housing for driving the cutting chain. The battery pack is used to provide electrical energy to the drive motor. The controller is electrically connected to the drive motor. A first reference plane is defined perpendicular to the height direction of the chainsaw. Along the height direction of the chainsaw, the projection of the main handle on the first reference plane at least partially overlaps with the projection of the drive motor on the first reference plane. The projections of the drive motor on the first reference plane are located outside the projections of the battery pack and the controller on the first reference plane, respectively, and the projections of the battery pack and the controller on the first reference plane at least partially overlap.

[0005] In one example of the chainsaw of this utility model, a plane perpendicular to the first reference plane and passing through the rotation axis of the drive motor is defined as the second reference plane. From the rear of the housing to the front of the housing, there is an overlap area between the projection of the controller on the second reference plane and the projection of the battery pack on the second reference plane.

[0006] In one example of the chainsaw of this utility model, both the battery pack and the controller are installed at the rear of the housing, with the controller located below the battery pack.

[0007] In one example of the chainsaw of this utility model, a plane perpendicular to the first reference plane and passing through the rotation axis of the drive motor is defined as the second reference plane. From the rear of the housing to the front of the housing, the projection of the controller on the second reference plane does not overlap with the projection of the battery pack on the second reference plane.

[0008] In one example of the chainsaw of this utility model, from the rear to the front of the housing, the projection of the main handle on the second reference plane at least partially overlaps with the projection of the battery pack on the second reference plane.

[0009] In one example of the chainsaw of this utility model, the battery pack is detachably connected to the housing. The battery pack has a first interface, and the housing has a second interface. The first interface and the second interface are plugged and unplugged along a first direction, which is perpendicular to the end face of the blade.

[0010] In one example of the chainsaw of this utility model, the battery pack is detachably connected to the housing. The battery pack is provided with a first interface, and the housing is provided with a second interface. The first interface and the second interface are plugged and plugged in along a first direction. An included angle α is formed between the axis extending along the first direction and the end face of the blade, and 80°≤α≤100°.

[0011] In one example of the chainsaw of this utility model, the outer wall of the housing is provided with a groove, the battery pack is disposed in the groove, and the groove and the battery pack are provided with guides for the first interface and the second interface to be inserted in a first direction.

[0012] In one example of the chainsaw of this utility model, at least two hooks are provided at the rear of the housing. Both hooks are rotatably connected to the housing, and the rotation axes of the two hooks are not parallel to each other.

[0013] In one example of the chainsaw of this utility model, both hooks are provided with a working position and a storage position in their respective rotation directions.

[0014] In one example of the chainsaw of this utility model, a cover plate is provided on the side of the housing facing the blade plate. The cover plate is connected to the housing to form a first receiving cavity. A lubricating oil circuit for lubricating the blade chain is provided in the first receiving cavity. The lubricating oil circuit includes an oil pump, an oil inlet pipe and an oil outlet pipe. The oil inlet pipe and the oil outlet pipe are respectively connected to the oil inlet and oil outlet of the oil pump.

[0015] In one example of the chainsaw of this utility model, an accessory tool storage structure is provided on the outer side of the housing, and the accessory tools are configured as nuts and / or screws for operating the chainsaw.

[0016] In one example of the chainsaw of this utility model, the accessory tool storage structure is located at the bottom of the housing.

[0017] In one example of the chainsaw of this utility model, the accessory tool includes a rod body and a nut screwing part disposed at one end of the rod body. The accessory tool storage structure includes a plug-in part and a clamping part. The nut screwing part is plugged into the plug-in part, and the rod body is snapped into the clamping part.

[0018] In one example of the chainsaw of this utility model, the insertion part is a columnar protrusion, and the nut screwing part can rotate along the axis of the columnar protrusion.

[0019] The chainsaw provided by this utility model has a handle projection that at least partially overlaps with the projection of the drive motor along the height direction of the chainsaw. The projection of the drive motor is located outside the projections of the battery pack and the controller, and the projections of the battery pack and the controller at least partially overlap. Therefore, this allows the relatively heavy drive motor, battery pack, and controller to be positioned closer to the handle, resulting in a smaller gravitational torque relative to the handle. This saves effort during lifting or raising the chainsaw, thus alleviating user fatigue during long-term operation. Furthermore, because the drive motor, battery pack, and controller are arranged around the handle, the overall structure of the chainsaw is more compact, which helps to reduce the overall size of the machine. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of an embodiment of the chainsaw of this utility model;

[0022] Figure 2 This is a side view of one embodiment of the chainsaw of this utility model from one angle;

[0023] Figure 3 This is a top view of an embodiment of the chainsaw of this utility model;

[0024] Figure 4 This is a side view of another embodiment of the chainsaw of this utility model;

[0025] Figure 5 This is a partial cross-sectional view of an embodiment of the chainsaw of this utility model;

[0026] Figure 6 This is a partial schematic diagram of the airflow direction inside the housing in one embodiment of the chainsaw of this utility model;

[0027] Figure 7 This is an enlarged view of a portion of the mounting position between the battery pack and the housing in one embodiment of the chainsaw of this utility model;

[0028] Figure 8 for Figure 2 A magnified view of a portion of region A in the middle;

[0029] Figure 9 This is a schematic diagram showing the chip discharge port configuration in one embodiment of the chainsaw of this utility model;

[0030] Figure 10 This is a schematic diagram of the structure of the chainsaw of this utility model with the battery pack removed from the groove in one embodiment;

[0031] Figure 11 This is a schematic diagram of the overall structure of the battery pack in one embodiment of the chainsaw of this utility model;

[0032] Figure 12 for Figure 5 A magnified view of a portion of region B in the middle;

[0033] Figure 13 This is a schematic diagram showing the hook located in the storage position in one embodiment of the chainsaw of this utility model;

[0034] Figure 14 This is a schematic diagram showing the hook in the working position in one embodiment of the chainsaw of this utility model;

[0035] Figure 15 This is a schematic diagram showing the braking mechanism disposed in the first receiving cavity in one embodiment of the chainsaw of this utility model;

[0036] Figure 16 This is a cross-sectional view of the installation positions of the first dustproof component, the second dustproof component, and the cover plate in one embodiment of the chainsaw of this utility model;

[0037] Figure 17 This is a schematic diagram of the structure of a chainsaw according to the present invention, in which the first dustproof component is not installed between the brake disc and the first mounting hole;

[0038] Figure 18 This is a schematic diagram showing the location of the air inlet and air outlet on the housing in one embodiment of the chainsaw of this utility model;

[0039] Figure 19 This is a schematic diagram showing the installation position of the accessory tool storage structure on the housing in one embodiment of the chainsaw of this utility model;

[0040] Figure 20 for Figure 19 A magnified view of a portion of region C in the middle;

[0041] Figure 21 This is a schematic diagram of the accessory tool storage structure without accessory tools installed in one embodiment of the chainsaw of this utility model;

[0042] Figure 22 This is a schematic diagram showing the installation position of the lubrication oil circuit on the housing in one embodiment of the chainsaw of this utility model;

[0043] Figure 23 This is a partial structural diagram of a chainsaw according to the present invention, with the protective plate removed.

[0044] Component designation explanation

[0045] 100. Chainsaw; 10. Housing; 110. First reference plane; 120. Second reference plane; 130. Axis; 140. Third reference plane; 1001. Sloping surface; 1002. First mounting surface; 11. First dustproof component; 12. Air inlet; 13. Chip-proof structure; 14. Air outlet; 15. Accessory tool storage structure; 151. Plug-in part; 152. Clamping part; 16. Accessory tools; 161. Rod part; 162. Nut tightening part; 163. Screwdriver; 17. First housing; 18. Second housing; 101. Second interface; 102. Groove; 1021. Groove bottom wall; 1022. Groove side wall; 1023. Stop part; 103. Main handle; 104. Secondary handle; 105. Cover plate; 1051. 106. First mounting hole; 107. First receiving cavity; 108. Protective plate; 109. Second receiving cavity; 1001. Chip discharge port; 1002. Chip baffle; 101. Bearing surface; 20. Cutting tool; 21. Cutting chain; 22. Cutting plate; 23. Sprocket; 30. Drive motor; 40. Battery pack; 41. First interface; 50. Controller; 60. Guide part; 61. Guide plate; 62. Guide groove; 70. Hook; 71. Mounting base; 72. Lifting ring; 80. Braking mechanism; 81. Brake disc; 82. Linkage component; 83. Brake band; 84. Elastic component; 85. Brake handle; 851. Second dustproof component; 90. Lubricating oil circuit; 91. Filter assembly; 92. Oil inlet pipe; 93. Oil outlet pipe; 94. Oil storage part; 95. Oil pump. Detailed Implementation

[0046] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0047] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.

[0048] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0049] Please see Figures 1 to 23 The chainsaw 100 provided by this utility model, with its heavy drive motor 30, battery pack 40, and controller 50 positioned close to the handle, can save the effort required to lift or raise the chainsaw 100, thus alleviating user fatigue during long-term lifting operations. At the same time, the overall structure of the chainsaw 100 is more compact, which helps to reduce the overall size of the machine.

[0050] Please see Figures 1 to 6 The chainsaw 100 provided by this utility model includes a housing 10, a cutting tool 20, a drive motor 30, a battery pack 40, and a controller 50. The housing 10 includes a first housing 17 and a second housing 18 that are fastened together, forming a receiving cavity between the first housing 17 and the second housing 18. The drive motor 30 is installed in the receiving cavity and fixedly connected to the housing 10. The output shaft of the drive motor 30 extends through the first housing 17 toward the outside of the receiving cavity. A sprocket 23 is fixedly connected to the output shaft of the drive motor 30, and the sprocket 23 is located outside the receiving cavity. A main handle 103 is provided on the upper exterior of the housing 10. It should be noted that, to facilitate the lifting of the chainsaw 100, other handles for the user to grip can also be provided on the outer side of the housing 10, such as… Figure 4 As shown, a secondary handle 104 with a different gripping direction than the main handle 103 is also provided on the side wall of the housing 10.

[0051] Please see Figure 2 , Figure 5 and Figure 7The cutting tool 20 includes a blade chain 21 and a blade plate 22 for supporting the blade chain 21. The blade plate 22 and blade chain 21 are located outside the receiving cavity. The blade plate 22 has a long, narrow structure; one end of the blade plate 22 is connected to the side of the first housing 17 opposite to the second housing 18, and the other end extends towards the front of the housing 10. One end of the blade chain 21 engages with a sprocket 23, and the other end of the blade chain 21 surrounds the circumference of the blade plate 22. The drive motor 30 rotates the sprocket 23, and the blade chain 21 rotates under the driving force of the sprocket 23 and the support of the blade plate 22, thereby completing the corresponding garden cutting task.

[0052] Please see Figure 5 and Figure 7 The battery pack 40 is installed at the rear of the housing 10 to provide power to the drive motor 30. The battery pack 40 can be a pouch battery pack, a cylindrical battery pack, or any other battery structure that meets the power supply requirements. The controller 50 is installed at the rear of the housing 10 and below the battery pack 40, and is electrically connected to the drive motor 30. In this embodiment, the controller 50 is located inside the receiving cavity, and the electrical connection with the drive motor 30 is achieved inside the receiving cavity. In other embodiments, the controller 50 can also be a separate housing structure located outside the receiving cavity, and is fixedly connected to the rear of the housing 10 by bolts. The bottom of the housing 10 is provided with a bearing surface 109, and when the chainsaw 100 is not working, it is placed on a platform or the ground via the bearing surface 109.

[0053] To clearly illustrate the technical solution of this utility model, such as Figure 2 As shown, with the chainsaw 100 lying flat on the support platform via the bearing surface 109, the directions of front, rear, top, and bottom of the housing 10 are defined. The vertical direction of the housing 10 is the same as the height direction of the chainsaw 100.

[0054] Please see Figures 3 to 5A first reference plane 110 is defined perpendicular to the height direction of the chainsaw 100. Along the height direction of the chainsaw 100, the projection of the main handle 103 onto the first reference plane 110 at least partially overlaps with the projection of the drive motor 30 onto the first reference plane 110. The projections of the drive motor 30 onto the first reference plane 110 are located outside the projections of the battery pack 40 and the controller 50 onto the first reference plane 110, respectively. That is, the projections of the drive motor 30 and the battery pack 40 onto the first reference plane 110 do not overlap, nor do the projections of the drive motor 30 and the controller 50 onto the first reference plane 110. In other words, there is no overlapping area between the projections of the drive motor 30 and the battery pack 40 and the controller 50 onto the first reference plane 110. The projections of the battery pack 40 and the controller 50 onto the first reference plane 110 at least partially overlap. This arrangement creates an overlap between the battery pack 40 and the controller 50 along the front-rear direction of the housing 10, resulting in a more compact arrangement of the battery pack 40 and controller 50 and a smaller overall size of the chainsaw 100. Simultaneously, because the battery pack 40 is located above the controller 50, it is closer to the main handle 103 in the height direction, reducing the lever arm of the battery pack 40 relative to the main handle 103. This saves effort during lifting or raising the chainsaw 100, alleviating user fatigue during prolonged operation. Furthermore, since the projection of the main handle 103 onto the first reference plane 110 at least partially coincides with the projection of the drive motor 30 onto the first reference plane 110, the lever arm of the drive motor 30 relative to the main handle 103 is also smaller. This further saves effort during lifting the chainsaw 100, further reducing user fatigue during prolonged operation.

[0055] Please see Figure 4 and Figure 5In one example of the chainsaw 100 of this utility model, a plane perpendicular to the first reference plane 110 and passing through the rotation axis of the drive motor 30 is defined as the second reference plane 120. From the rear to the front of the housing 10, there is an overlap between the projection of the controller 50 on the second reference plane 120 and the projection of the battery pack 40 on the second reference plane 120. That is, the controller 50 and the battery pack 40 are staggered along the height direction of the housing 10, which makes the structure between the battery pack 40 and the controller 50 more compact. Specifically, a ramp surface 1001 is provided in the area of ​​the housing 10 above the controller 50, and the bottom wall of the battery pack 40 corresponds to and matches the ramp surface 1001, thus forming a staggered arrangement with the controller 50 along the height direction. It is understood that in other embodiments, from the rear of the housing 10 to the front of the housing 10, there may be no overlap between the projection of the controller 50 on the second reference plane 120 and the projection of the battery pack 40 on the second reference plane 120, that is, the controller 50 and the battery pack 40 are arranged sequentially in the vertical direction.

[0056] Please see Figure 4 and Figure 5 In one example of the chainsaw 100 of this utility model, from the rear to the front of the housing 10, the projection of the main handle 103 on the second reference plane 120 at least partially overlaps with the projection of the battery pack 40 on the second reference plane 120. Along the height direction of the housing 10, the projection of the main handle 103 on the second reference plane 120 may be partially higher than the projection of the battery pack 40 on the second reference plane 120, partially overlapping with the projection of the battery pack 40 on the second reference plane 120; alternatively, the projection of the main handle 103 on the second reference plane 120 may be completely covered by the projection of the battery pack 40 on the second reference plane 120, meaning the projection of the main handle 103 falls entirely within the projection of the battery pack 40, as long as the projection of the handle on the second reference plane 120 at least partially overlaps with the projection of the battery pack 40 on the second reference plane 120. This arrangement allows the battery pack 40 to be positioned further closer to the main handle 103 in the height direction, thereby further saving the effort required to lift or raise the chainsaw 100 and alleviating user fatigue during long-term holding operations.

[0057] In one example of the chainsaw 100 of this utility model, the ratio of the output power of the drive motor 30 to the weight of the main body is greater than or equal to 0.7 kW / kg. It should be noted that the weight of the main body includes the weight of the housing 10 and the weight of the components housed inside the housing 10. That is, the weight of the main body does not include other components located outside the housing 10, such as the blade plate 22, blade chain 21, battery pack 40, blade sheath (not shown in the figure), wrench, and other components that can be detached from the housing 10. It should also be noted that although the sprocket 23 connected to the output shaft of the drive motor 30 is located outside the housing 10, it is included in the weight of the main body because it is part of the power drive system. In actual design, the specific weight of the main body will vary depending on the actual configuration of the saw chain 100, and therefore the output power of the drive motor 30 will also vary accordingly to ensure that the ratio of the output power of the drive motor 30 to the weight of the main body is greater than or equal to 0.7 kW / kg. This configuration ensures that, with the same output power of the drive motor 30, the main body has a smaller weight, thus saving effort during lifting or raising of the chainsaw 100 and alleviating user fatigue during long-term operation. Furthermore, with the same weight of the main body, the drive motor 30 has a larger output power, thereby improving the cutting efficiency of the chainsaw 100.

[0058] Please see Figure 3 , Figure 5 , Figure 10 and Figure 11 In one example of the chainsaw 100 of this utility model, the battery pack 40 is detachably connected to the housing 10. The detachable connection method can be a snap-fit ​​connection, a bolted connection, etc. The battery pack 40 is provided with a first interface 41, which can be located at any position such as the bottom wall or side wall of the battery pack 40. The housing 10 is provided with a second interface 101. The first interface 41 and the second interface 101 are plugged and unplugged together along a first direction, which is perpendicular to the end face of the blade 22. Figure 3As indicated by the arrow. The number of first interfaces 41 and second interfaces 101 is unlimited, as long as the electrical connection requirements are met. By connecting the first interface 41 and the second interface 101 in the first direction, it is not necessary to set up wires for electrical connection with the battery pack 40, thus saving installation space and facilitating electrical connection within a limited space. This optimizes the overall design layout of the chainsaw 100, making the overall structure more compact. Simultaneously, since the first direction is perpendicular to the end face of the blade 22, i.e., the insertion / removal direction is perpendicular to the gravity direction of the battery pack 40, the first interface 41 and the second interface 101 can be better protected during insertion / removal, reducing the probability of damage to the first interface 41 and the second interface 101. Furthermore, in this embodiment, the length direction of the battery pack 40 is consistent with the insertion / removal direction of the first interface 41 and the second interface 101, as shown below. Figure 3 As shown in the figure. This arrangement can further reduce the space occupied by the battery pack 40 in the height direction of the chainsaw 100, further reduce the height dimension of the chainsaw 100, and is conducive to the compact design of the chainsaw 100 structure.

[0059] It should be noted that in some other embodiments, the first interface 41 and the second interface 101 can also be plugged in and plugged out in a direction perpendicular to the ground, that is, the battery pack 40 moves up and down along the height direction of the saw chain 100 to achieve the plugging and plugging connection between the first interface 41 and the second interface 101. This can also achieve the plugging and plugging electrical connection between the battery 40 and the housing 10.

[0060] Please see Figure 3 , Figure 7 , Figure 10 and Figure 11 In one example of the chainsaw 100 of this utility model, an angle α is formed between the axis 130 extending along the first direction and the end face of the blade 22, and 80°≤α≤100°. That is, when the first interface 41 and the second interface 101 are plugged in and out, an insertion angle error within ±10° is allowed. Within this error angle range, the insertion and installation accuracy requirements between the first interface 41 and the second interface 101 can be met, and the installation accuracy of the first interface 41 and the second interface 101 can be relatively reduced, thus saving the manufacturing cost of the chainsaw 100. Preferably, in this embodiment, the angle α formed between the axis 130 and the end face of the blade 22 is 90°, that is, the first direction is perpendicular to the end face of the blade 22.

[0061] Please see Figures 9 to 12In one example of the chainsaw 100 of this utility model, a groove 102 is provided on the outer wall of the housing 10, and a battery pack 40 is disposed in the groove 102. The groove 102 includes a bottom wall 1021 and a side wall 1022. When the battery pack 40 is installed in the groove 102, the bottom wall 1021 corresponds to the bottom wall of the battery pack 40, and the side wall 1022 corresponds to the side wall of the battery pack 40. The battery pack 40 can be connected to the side wall 1022, the bottom wall 1021, or both. A guide portion 60 is provided on the groove 102 and the battery pack 40 to guide the insertion of the first interface 41 and the second interface 101 along a first direction. The guide portion 60 can be disposed on the bottom wall 1021 and the bottom wall of the battery pack 40, or on the side wall of the groove 102 and the side wall of the battery pack 40. The guide portion 60 can be a structure of protrusions and grooves, or a structure of guide posts and guide sleeves, etc. By providing the guide portion 60, the insertion and removal direction between the first interface 41 and the second interface 101 can be easily controlled, thereby ensuring the insertion and removal accuracy between the first interface 41 and the second interface 101 and improving the stability of the electrical connection.

[0062] Specifically, please refer to Figures 10 to 12 In this embodiment, the guide portion 60 includes a guide plate 61 disposed on the side wall 1022 of the groove. The guide plate 61 extends along a first direction. The side wall of the battery pack 40 is provided with a guide groove 62. The guide plate 61 is snapped into the guide groove 62 and slidably connected along the guide groove 62. In other embodiments, the side wall 1022 of the groove may be provided with a guide groove 62, and the side wall of the battery pack 40 may be provided with a guide plate 61. The guide plate 61 slides along the guide groove 62 to achieve a guiding function. One guide groove 62 and one guide plate 61 may be provided, or multiple guide plates 61 may be provided. In this embodiment, two sets of guide grooves 62 are arranged in parallel along the height direction of the battery. Correspondingly, two sets of guide plates 61 are arranged in parallel on the side wall 1022 of the groove, and the two guide plates 61 are respectively opposite to the two guide grooves 62. This arrangement can obtain a relatively stable sliding guidance accuracy between the battery pack 40 and the groove 102. The second interface 101 is disposed on the side wall 1022 of the groove and located at one end of the guide plate 61 along its length. The first interface 41 is correspondingly disposed on the side wall of the battery pack 40. The side wall 1022 of the groove has an opening 1024 at the end opposite to the second interface 101 and a stop 1023 at the end near the second interface 101. When the battery pack 40 needs to be installed into the groove 102, the guide groove 62 slides into the guide plate 61 from the opening 1024, causing the first interface 41 to move closer to the second interface 101 until the end of the guide groove 62 abuts against the stop 1023. The guide groove 62 stops moving relative to the guide plate 61, at which point the first interface 41 and the second interface 101 are inserted into place.

[0063] Further, please refer to Figure 5 , Figure 8 , Figure 10 , Figure 11 and Figure 12 The bottom wall 1021 of the groove forms a slope surface 1001. One side wall of the battery pack 40 abuts against the slope surface 1001, and the wall of the battery pack 40 with the guide plate 61 abuts against the side wall 1022 of the groove, thereby making the battery pack 40 and the bearing surface 109 inclined, so that the wall of the battery pack 40 with the guide plate 61 and the third reference surface 140 form a slope surface 1001. Figure 2 The included angle β shown is such that the third reference plane 140 is perpendicular to the bearing plane 109. This arrangement can further reduce the size of the battery pack 40 in the height direction of the chainsaw 100, thereby reducing the overall height of the chainsaw 100 and making it more conducive to the compact design of the chainsaw 100.

[0064] It should be noted that, in other embodiments, the wall of the battery pack 40, which is provided with the guide plate 61, can also be arranged parallel to the third reference plane 140, that is, the battery pack 140 and the bearing surface 109 are arranged perpendicularly. Please refer to Figure 10 , Figure 13 and Figure 14 In one example of the chainsaw 100 of this utility model, at least two hooks 70 are provided at the rear of the housing 10, which is the side of the housing 10 away from the cutter 20 along the front-rear direction of the housing 10. A first mounting surface 1002 is provided at the rear of the housing 10, and both hooks 70 are mounted on the first mounting surface 1002 and rotatably connected relative to the first mounting surface 1002. The two hooks 70 are spaced apart on the first mounting surface 1002, either vertically or horizontally. The rotatable connection between the hooks 70 and the first mounting surface 1002 is not limited; for example, it can be connected by a hinge or by a shaft hole. The rotational directions of the two hooks 70 relative to the first mounting surface 1002 are not parallel. The rotational directions of the two hooks 70 can be perpendicular to each other or at a certain angle, as long as the rotational directions of the two hooks 70 are not parallel. Preferably, in this embodiment, the extension direction of the rotation axis of one of the hooks 70 is consistent with the width direction of the housing 10, that is, the hook 70 is horizontally arranged, such as... Figure 13 As shown in the Y-axis direction. The extension direction of the rotation axis of the other hook 70 is consistent with the height direction of the housing 10, that is, hook 70 is vertically set, as shown... Figure 13As shown in the Z-axis direction. Both hooks 70 are positioned close to the center of the housing 10's width. By placing two hooks 70 at the rear of the housing 10, with their rotation directions not parallel, during operation, the horizontally positioned hook 70 allows the tail of the chainsaw 100 to be directly hooked onto a quick-release buckle on the operator's body, while the vertically positioned hook 70 connects to an elastic anti-loss rope on the operator's body. Furthermore, due to the two-way hook arrangement, when the operator holds the chainsaw vertically, it can be easily and quickly hooked onto the horizontally positioned hook 70 without flipping the chainsaw 100. When the chainsaw 100 is released and suspended in the air, the vertically positioned hook 70, positioned close to the center of the housing 10's width, minimizes the chainsaw's lateral tilt, facilitating passage through nearby branches and allowing for easier movement by the operator in the garden.

[0065] Specifically, please refer to Figure 13 and Figure 14 In one example of the chainsaw 100 of this utility model, the hook 70 includes a mounting base 71 and a lifting ring 72. The mounting base 71 is fixedly connected to the first mounting surface 1002 and has a insertion hole. The two ends of the lifting ring 72 have locking parts, which are respectively locked onto the two ends of the insertion hole and rotatably connected relative to the insertion hole. The insertion holes of the two hooks 70 are arranged vertically.

[0066] Please see Figure 13 and Figure 14 In one example of the chainsaw 100 of this utility model, the two hooks 70 are provided with a working position and a storage position in their respective rotation directions. The working position is the position where the lifting ring 72 is approximately perpendicular to the first mounting surface 1002, and the storage position is the position where the lifting ring 72 is attached to the first mounting surface 1002. During the operation of the chainsaw 100, when it is necessary to lift the tail of the housing 10, the hook 70 is rotated from the storage position to the working position for normal use. When the chainsaw 100 completes the cutting operation, the hook 70 is rotated from the working position to the storage position to reduce the probability of the hook 70 being collided during the placement of the chainsaw 100, which could cause the chainsaw 100 to become unstable and tilt or fall over.

[0067] It should be noted that when calculating the ratio of the output power of the drive motor 30 to the weight of the main body in the above embodiments, the weight of the main body may include the weight of the two hooks 70, that is, the weight of the two hooks 70 is included as part of the weight of the housing 10. In another embodiment, the weight of the main body may not include the weight of the two hooks 70, that is, the two hooks 70 are considered as parts disposed outside the housing 10. Since the weight of the two hooks 70 is relatively small compared to the overall weight of the chainsaw 100, whether or not the weight of the two hooks 70 is included in the weight of the main body has little impact on the calculation result of the ratio of the output power of the drive motor 30 to the weight of the main body. In the embodiments of this application, no specific limitation is made in this regard.

[0068] Please see Figure 6 , Figure 7 Figure 15 In one example of the chainsaw 100 of this utility model, a cover plate 105 is provided on the side of the housing 10 facing the blade 22. The cover plate 105 is connected to the side of the first housing 17 opposite to the second housing 18, forming a first receiving cavity 106. The chainsaw 100 includes a braking mechanism 80, which can control the rotation and stop of the drive motor 30, thereby controlling the operation and stop of the blade chain 21. The braking mechanism 80 is housed in the first receiving cavity 106, and the blade 20 is located outside the first receiving cavity 106. The weight of the main body does not include the weight of the braking mechanism 80. With this arrangement, the cover plate 105 can isolate the blade 20 from the braking mechanism 80, thereby reducing the probability of wood chips coming into contact with the braking mechanism 80 during the chainsaw 100 cutting operation, thus ensuring the normal operation of the braking mechanism 80.

[0069] Please see Figure 7 and Figure 15 In one example of the chainsaw 100 of this utility model, the braking mechanism 80 includes a brake handle 85 rotatably connected to the housing 10, a linkage member 82 connected to the brake handle 85, a brake band 83 connected to the linkage member 82, and a brake disc 81 mounted on the output shaft of the drive motor 30. Operating the brake handle 85 causes the linkage member 82 to move, and the brake band 83, driven by the linkage member 82, can grip the brake disc 81, thereby braking the drive motor 30. Simultaneously, operating the brake handle 85 in the opposite direction causes the linkage member 82 to move in the opposite direction, and the brake band 83, under the action of the linkage member 82 and the elastic member 84, releases the brake disc 81, allowing it to rotate freely, thus restoring the drive motor 30 to its operating state. It should be noted that the specific connection structures between the brake handle 85 and the housing 10, the linkage 82 and the housing 10, the brake disc 81 and the drive motor 30, and the brake band 83 and the brake disc 81 can be referred to the connection structure of the braking mechanism 80 on the existing chainsaw 100, and will not be described in detail here.

[0070] Please see Figure 6 , Figure 7 , Figure 14 , Figure 15 , Figure 16 and Figure 17 The cover plate 105 has a first mounting hole 1051. The output shaft of the drive motor 30 passes through the first mounting hole 1051 and extends to the outside of the first receiving cavity 106 to connect with the sprocket 23. The end of the brake disc 81 facing the sprocket 23 is fitted into the first mounting hole 1051. In order to enable the brake disc 81 to rotate relative to the housing 10, the outer diameter of the brake disc 81 is smaller than the inner diameter of the first mounting hole 1051. A first dustproof component 11 is provided between the brake disc 81 and the first mounting hole 1051 to prevent dust, wood chips, etc. from entering the first receiving cavity 106 from the first mounting hole 1051. The first dustproof component 11 is provided on the inner side wall of the cover plate 105, and the first dustproof component 11 is coaxially arranged with the first mounting hole 1051. The inner diameter of the first dustproof component 11 is smaller than the inner diameter of the first mounting hole 1051. The first dustproof component 11 can be a rubber gasket, a felt gasket, etc. The first dustproof component 11 can be glued and fixed to the inner wall of the cover plate 105, or it can be fixed to the inner wall of the cover plate 105 by bolts. The first dustproof component 11 can effectively prevent debris, dust and other impurities from entering the first receiving cavity 106 through the first mounting hole 1051, thereby further ensuring the normal operation of the braking mechanism 80. At the same time, it can also block debris, dust and other impurities from entering the interior of the drive motor 30, ensuring the normal operation of the drive motor 30.

[0071] Please see Figure 7 , Figure 15 and Figure 16 The brake handle 85 is rotatably connected to the first housing 17. The surface of the handle 85 facing away from the first housing 17 is connected to the cover plate 105. A second dustproof component 851 is provided between the cover plate 105 and the handle 85. The second dustproof component 851 is sandwiched between the cover plate 105 and the handle 85 to reduce the installation gap between the second dustproof component 851 and the cover plate 105, thereby reducing the probability of sawdust, dust and other impurities entering the first receiving cavity 106 from this position, thus further preventing sawdust, dust and other impurities from entering the brake or drive motor 30. It should be noted that the second dustproof component 851 can be fixedly connected to the surface of the cover plate 105 facing the first housing 17, or it can be fixedly connected to the surface of the handle 85 facing the cover plate 105. The second dustproof component 851 can be any structure that can play a dustproof role during the rotation of the brake handle 85, such as a sponge dustproof pad or a felt dustproof pad.

[0072] Please see Figure 2 , Figure 7 and Figure 9 In one example of the chainsaw 100 of this utility model, a protective plate 107 is installed on the side of the cover plate 105 away from the first housing 17. A second receiving cavity 108 is formed between the protective plate 107 and the cover plate 105. The sprocket 23, the blade 22, and the blade chain 21 are all located in the second receiving cavity 108 near one end of the sprocket 23. The second receiving cavity 108 is open on the side facing the front of the housing 10. The ends of the blade 22 and the blade chain 21 away from the sprocket 23 extend from the open end and extend to the outside of the second receiving cavity 108 for cutting operations. A chip discharge port 1081 is provided below the second receiving cavity 108. When the chainsaw 100 performs cutting operations, the second receiving cavity 108 forms a chip discharge space. Wood chips generated during the cutting process enter the second receiving cavity 108 with the movement of the blade chain 21 and are discharged through the chip discharge port 1081 below.

[0073] Please see Figure 9 In one example of the chainsaw 100 of this utility model, a chip baffle 1082 is provided at the chip discharge port 1081. The chip baffle 1082 can be located at any position around the perimeter of the chip discharge port 1081. For example, the chip baffle 1082 can be located on the long side of the chip discharge port 1081 or on the short side of the chip discharge port 1081. In this embodiment, the chip discharge port 1081 is an approximately rectangular opening, and the direction of the long side of the chip discharge port 1081 is consistent with the front-rear direction of the housing 10. The chip baffle 1082 is located on the short side of the chip discharge port 1081 near the rear of the housing 10. The chip baffle 1082 can be any material with a certain hardness, such as a rubber plate or a metal plate. The chip baffle 1082 can be fixedly connected to the chip discharge port 1081 by various methods such as snap-fit, bolt connection, or adhesive. By providing the chip baffle 1082, the probability of wood chips flying onto the operator can be reduced to a certain extent.

[0074] Please see Figure 18 In one example of the chainsaw 100 of this utility model, the housing 10 is provided with an air inlet 12, and an anti-shaving structure 13 is provided at the air inlet 12. The air inlet 12 can be opened on the first housing 17 or the second housing 18, depending on the air intake requirements inside the housing 10. Optionally, in this embodiment, the air inlet 12 is provided on the second housing 18 opposite to the blade 22. This arrangement of the air inlet 12 away from the side that generates wood chips helps to reduce the probability of wood chips entering the housing 10 from the air inlet 12. The anti-shaving structure 13 can be any structure that can block wood chips from entering, such as a filter or grille, provided at the air inlet 12. Optionally, in this embodiment, a grille is provided at the air inlet 12, and the anti-shaving structure 13 is a filter, which can be detachably installed on the grille.

[0075] Please see Figure 5 , Figure 6 and Figure 20To ensure effective heat dissipation for the controller 50 and drive motor 30, in one example of the chainsaw 100 of this utility model, the housing 10 further includes an air outlet 14, which communicates with the air inlet 12. The specific location of the air outlet 14 on the housing 10 is not limited; for example, it can be located below the housing 10 or on a side wall opposite to the air inlet 12. When the chainsaw 100 is running, a heat dissipation airflow path is formed, entering from the air inlet 12 and flowing out from the air outlet 14. This heat dissipation airflow path can pass through the stator, rotor, and controller 50 of the drive motor 30. Figure 6 The direction of the middle arrow indicates the local flow direction of the airflow. Optionally, in this embodiment, the air outlet 14 is located below the housing 10, such as... Figure 20 As shown. When the chainsaw 100 is running, the drive motor 30 rotates, causing the cooling fan connected to the motor shaft to rotate synchronously, thereby creating a negative pressure in the receiving cavity inside the housing 10. At this time, airflow flows into the housing 10 from the air inlet 12, and flows through the stator and rotor of the drive motor 30 and the circuit board on the controller 50, and finally flows out from the air outlet 14. This can simultaneously remove the heat generated by the drive motor 30 and the controller 50, improving the heat dissipation performance of the chainsaw 100.

[0076] Please participate Figure 20 and Figure 21 In one example of the chainsaw 100 of this utility model, an accessory tool storage structure 15 is provided on the outer side of the housing 10. The accessory tool 16 is configured as a nut and / or screw for operating the chainsaw 100. The storage structure can be a groove structure integrally formed with the housing 10, or it can be an additional cavity part, fixedly connected to the outer wall of the housing 10 by screws. The accessory tool storage structure 15 can be set at any position such as the bottom wall or side wall of the housing 10, to facilitate the user to remove or store the accessory tool 16. Preferably, in this embodiment, the accessory tool storage structure 15 is set on the bottom wall of the housing 10, that is, located below the housing 10, which can reduce the probability of the chainsaw 100 colliding with the accessory tool 16 during operation. The accessory tool storage structure 15 can be a snap-fit ​​groove structure that engages with the accessory tool 16, or it can be a storage cavity structure set in the housing 10. The storage cavity allows the accessory tool 16 to be removed and placed by opening and closing the cover. Accessory tool 16 can be a hex wrench for removing and installing nuts, a screwdriver 163 for removing and installing screws, or a combination structure with a hex wrench and a screwdriver at each end. This design allows the user to directly access accessory tool 16 from the accessory tool storage structure 15 when needing to repair the chainsaw 100. Therefore, the repair and disassembly of the chainsaw 100 is more convenient and faster, thereby improving the repair efficiency of the chainsaw 100.

[0077] Please see Figure 21In one example of the chainsaw 100 of this utility model, the accessory tool 16 includes a rod portion 161 and a nut tightening portion 162 disposed at one end of the rod portion 161. The nut tightening portion 162 can be an internal hexagon socket structure that matches the nut, a wrench jaw portion, etc. The rod portion 161 can be a cylindrical rod, a long strip rod, etc. The end of the rod portion 161 away from the nut tightening portion can be provided with a screwdriver 163 for removing screws, or it can be a nut tightening portion of other specifications, etc. Optionally, in this embodiment, one end of the rod portion 161 is connected to the nut tightening portion, and the other end is integrally formed with a screwdriver 163.

[0078] Please participate Figure 19 , Figure 20 and Figure 21 The accessory tool storage structure 15 includes a plug-in part 151 and a clamping part 152. The nut tightening part 162 is plugged into the plug-in part 151. The plug-in connection can be made in various ways. For example, the plug-in part 151 may have a groove matching the outer circumferential surface of the nut tightening part, and the nut tightening part 162 may be housed within the groove to form a plug-in connection. Alternatively, the plug-in part 151 may be a protruding post structure, which is inserted into the central hole of the nut tightening part to form a plug-in connection. The rod body 161 is snap-fitted into the clamping part 152. The clamping part 152 is a slot structure that matches the shape of the rod body 161, and the rod body 161 is housed within the slot. The slot has a snap-fit ​​interface, and the outer circumferential surface of the rod body 161 snaps into the snap-fit ​​interface, thereby fixing the rod body 161 within the slot.

[0079] Please participate Figure 20 and Figure 21 In one example of the chainsaw 100 of this utility model, the insertion part 151 is a columnar protrusion, and the center hole of the nut tightening part 162 is inserted into the columnar protrusion. The nut tightening part 162 can rotate along the axis of the columnar protrusion, and the rotation direction can be any direction such as rotating along the height direction of the housing 10 or rotating in the front-back direction. In this embodiment, the columnar protrusion extends along the width direction of the housing 10 (e.g., Figure 21 (As shown on the X-axis), the nut tightening part 162 is sleeved on the columnar protrusion and rotates along the axis of the columnar protrusion to move away from or towards the bottom wall of the housing 10. The clamping part 152 is located on the bottom wall of the housing 10, and the opening direction of the clamping part 152's locking interface is in the direction of rotation of the nut tightening part 162 along the axis of the columnar protrusion. Thus, during the rotation of the nut tightening part 162, the rod part 161 can be engaged or disengaged from the locking interface, which facilitates the placement and removal of the accessory tool 16.

[0080] Please see Figure 22 and Figure 23In one example of the chainsaw 100 of this utility model, a lubrication oil passage 90 for lubricating the cutting chain 21 is also provided in the first receiving cavity 106. The lubrication oil passage 90 includes an oil pump 95, an oil inlet pipe 92, and an oil outlet pipe 93. The oil pump 95 is fixedly connected to the housing 10. The oil inlet pipe 92 and the oil outlet pipe 93 are respectively provided at both ends of the oil pump 95. The oil inlet pipe 92 is connected to the oil inlet of the oil pump 95, and the oil outlet pipe 93 is connected to the oil outlet of the oil pump 95. An oil storage part 94 is also provided on the housing 10. The oil storage part 94 can be an integrally formed cavity structure inside the housing 10, or it can be an oil can installed separately inside the housing 10. The oil outlet of the oil storage part 94 is connected to the end of the oil inlet pipe 92 away from the oil pump 95 through a filter assembly 91. A part of the filter assembly 91 is located in the first receiving cavity 106, and the other part penetrates the first receiving cavity 106 and is inserted into the interior of the oil storage part 94 from the oil outlet. The oil pump is configured such that the oil inlet pipe 92, oil outlet pipe 93, and oil pump 95 are all located within the first receiving cavity 106. This means that after removing the cover plate 105, the protective plate 107, and the cutting tool 20 and other parts between the cover plate 105 and the protective plate 107, the oil inlet pipe 92, oil outlet pipe 93, and oil pump 95 are exposed. Therefore, maintenance and replacement of the oil inlet pipe 92, oil outlet pipe 93, and oil pump 95 can be achieved without disassembling the first housing 17 and the second housing 18, thus facilitating the maintenance of the lubrication circuit 90.

[0081] The chainsaw provided by this utility model has a handle projection that at least partially overlaps with the drive motor projection along the height direction of the chainsaw. The drive motor projection is spaced apart from the battery pack projection and the controller projection, with the battery pack projection at least partially overlapping the controller projection. The controller is located below the battery pack. This arrangement allows the relatively heavy drive motor, battery pack, and controller to be positioned close to the handle, resulting in a smaller gravitational torque relative to the handle. This reduces the effort required to lift or raise the chainsaw, alleviating user fatigue during prolonged operation. Furthermore, the arrangement of the drive motor, battery pack, and controller around the handle makes the overall structure of the chainsaw more compact, reducing the overall size of the machine.

[0082] In summary, this utility model effectively overcomes some practical problems in the prior art, thus possessing high utilization value and significance. The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit it. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A chainsaw, characterized in that, include: A housing, with a main handle located on the upper exterior of the housing; The cutting tool includes a blade chain and a blade plate for supporting the blade chain, the blade plate being mounted on the housing and extending toward the front of the housing; A drive motor, housed within the housing, is used to drive the blade chain. A battery pack for supplying electrical energy to the drive motor; The controller is electrically connected to the drive motor; A first reference plane is defined perpendicular to the height direction of the chainsaw. Along the height direction of the chainsaw, the projection of the main handle on the first reference plane at least partially overlaps with the projection of the drive motor on the first reference plane. The projection of the drive motor on the first reference plane is located outside the projections of the battery pack and the controller on the first reference plane, respectively, and the projection of the battery pack on the first reference plane at least partially overlaps with the projection of the controller on the first reference plane.

2. The chainsaw according to claim 1, characterized in that, Define a plane perpendicular to the first reference plane and passing through the rotation axis of the drive motor as the second reference plane. From the rear of the housing to the front of the housing, there is an overlap area between the projection of the controller on the second reference plane and the projection of the battery pack on the second reference plane.

3. The chainsaw according to claim 1, characterized in that, Both the battery pack and the controller are mounted at the rear of the housing, with the controller located below the battery pack.

4. The chainsaw according to claim 1, characterized in that, Define a plane perpendicular to the first reference plane and passing through the rotation axis of the drive motor as the second reference plane. From the rear of the housing to the front of the housing, the projection of the controller on the second reference plane does not overlap with the projection of the battery pack on the second reference plane.

5. The chainsaw according to claim 2, characterized in that, From the rear to the front of the housing, the projection of the main handle on the second reference plane at least partially overlaps with the projection of the battery pack on the second reference plane.

6. The chainsaw according to claim 1, characterized in that, The battery pack is detachably connected to the housing. The battery pack has a first interface, and the housing has a second interface. The first interface and the second interface are plugged in and plugged in along a first direction, which is perpendicular to the end face of the blade.

7. The chainsaw according to claim 1, characterized in that, The battery pack is detachably connected to the housing. The battery pack has a first interface, and the housing has a second interface. The first interface and the second interface are plugged and plugged in along a first direction. An angle α is formed between the axis extending along the first direction and the end face of the blade, and 80°≤α≤100°.

8. The chainsaw according to claim 7, characterized in that, The outer wall of the housing is provided with a groove, the battery pack is disposed in the groove, and the groove and the battery pack are provided with a guide portion to guide the first interface and the second interface to be inserted along the first direction.

9. The chainsaw according to claim 1, characterized in that, At least two hooks are provided at the rear of the housing, both hooks are rotatably connected to the housing, and the rotation axes of the two hooks are not parallel to each other.

10. The chainsaw according to claim 9, characterized in that, Both hooks are provided with a working position and a storage position in their respective rotation directions.

11. The chainsaw according to claim 1, characterized in that, A cover plate is provided on the side of the housing facing the blade plate. The cover plate is connected to the housing to form a first receiving cavity. A lubricating oil circuit for lubricating the blade chain is provided in the first receiving cavity. The lubricating oil circuit includes an oil pump, an oil inlet pipe and an oil outlet pipe. The oil inlet pipe and the oil outlet pipe are respectively connected to the oil inlet and oil outlet of the oil pump.

12. The chainsaw according to claim 1, characterized in that, The outer side of the housing is provided with an accessory tool storage structure, and the accessory tools are configured as nuts and / or screws for operating the chainsaw.

13. The chainsaw according to claim 12, characterized in that, The accessory tool storage structure is located at the bottom of the housing.

14. The chainsaw according to claim 12, characterized in that, The accessory tool includes a rod body and a nut tightening part located at one end of the rod body. The accessory tool storage structure includes a plug-in part and a clamping part. The nut tightening part is plugged into the plug-in part, and the rod body is snapped into the clamping part.

15. The chainsaw according to claim 14, characterized in that, The insertion part is a columnar protrusion, and the nut screwing part can rotate along the axis of the columnar protrusion.

Images