Locking mechanism of chain guide plate

Abstract

The utility model belongs to the technical field of gardening tools, and particularly relates to a locking mechanism of a chain guide plate, which comprises a chain saw body, a chain wheel, a guide plate, a chain annularly arranged on the guide plate and the chain wheel and a locking component, the locking component comprises a side cover plate and a pressing knob, and an installation space is formed between the side cover plate and the chain saw body. One end of the guide plate is arranged in the installation space, a threaded rod is arranged on the pressing knob, a threaded hole is formed in the chain saw body, the threaded rod can be arranged in the threaded hole to be connected with the chain saw body, the guide plate located in the installation space can be fixed to the chain saw body by rotating the pressing knob, a clamping part is arranged on the side cover plate, and a connecting part is arranged on the pressing knob. The connecting part can rotate relative to the clamping part and is clamped with the clamping part, so that the side cover plate is limited to be separated from the pressing knob, the chain saw is simple in structure, after the side cover plate and the pressing knob are detached from the chain saw body, the side cover plate and the pressing knob cannot be separated, and the pressing knob is prevented from being lost.

Description

Technical Field

[0001] This utility model belongs to the field of garden tool technology, and specifically refers to a locking mechanism for a chain guide plate. Background Technology

[0002] A chainsaw is a gardening tool that uses a chain with blades to drive the chain at high speed to cut wood or branches. During this high-speed rotation, the chain wears down, eventually requiring users to replace the chain on the chain guide. Most chainsaws on the market use a guide plate cover and a knob to lock the guide plate to the chainsaw. When replacing the chain, users usually need to remove the guide plate cover from the chainsaw first. Removing the guide plate cover is done by turning a knob, which separates the knob from the cover, easily leading to its loss and rendering the chainsaw unusable. Furthermore, some countries require that the guide plate cover and knob be inseparable to prevent the knob from automatically detaching from the guide plate cover during use, causing the guide plate to fall to the ground and potentially resulting in injury. Most chainsaws on the market do not meet this requirement, thus limiting their sales. Summary of the Invention

[0003] The purpose of this invention is to provide a simple structure in which the side cover and the clamping knob do not separate after being removed from the chainsaw body, thus preventing the loss of the clamping knob. This also enables the chainsaw to meet the requirements of some foreign countries, expanding its sales range. Furthermore, the clamping knob will not fall off the side cover during use, improving the safety of the chainsaw.

[0004] The purpose of this utility model is achieved as follows:

[0005] A locking mechanism for a chain guide plate includes a chainsaw body, a sprocket mounted on the chainsaw body, a guide plate positioned in front of the sprocket, a chain encircling the guide plate and the sprocket, and a locking assembly for fixing the guide plate to the chainsaw body. The locking assembly includes a side cover plate and a clamping knob rotatably mounted on the side cover plate. An installation space is formed between the side cover plate and the chainsaw body. One end of the guide plate is positioned within the installation space. The clamping knob has a threaded rod, and the chainsaw body has a threaded hole. The threaded rod can be positioned within the threaded hole and connected to the chainsaw body. Rotating the clamping knob can fix the guide plate located in the installation space to the chainsaw body. The side cover plate has a snap-fit ​​portion, and the clamping knob has a connecting portion. The connecting portion can rotate relative to the snap-fit ​​portion and snap-fit ​​with the snap-fit ​​portion, thereby preventing the side cover plate from separating from the clamping knob.

[0006] Furthermore, the side cover plate includes a rotatably mounted tension knob. Driving the tension knob controls the guide plate to move back and forth relative to the sprocket. A clamping knob is rotatably mounted on the tension knob. The tension knob has a connecting hole. The threaded rod passes through the connecting hole and enters the threaded hole. The locking part includes a first locking member and a second locking member disposed on the inner wall of the connecting hole. The connecting part is disposed on the threaded rod and located in the connecting hole. The top end of the connecting part abuts against the first locking member and the second locking member.

[0007] Furthermore, the inner wall of the connecting hole is provided with a first mounting platform and a second mounting platform. The first fastener and the second fastener are respectively disposed on the first mounting platform and the second mounting platform, and the top of the first fastener and the second fastener are provided with a fastening block. The connecting part is located below the fastening block, and the top of the connecting part abuts against the fastening block.

[0008] Furthermore, the buckle block is provided with a guide slope, and the bottom of the connecting part is provided with a snap-fit ​​slope that matches the guide slope.

[0009] Furthermore, the side cover plate has a through hole, and the inner end of the tension knob has an extension portion that passes through the through hole and protrudes into the installation space. An eccentric wheel is fixedly connected to the extension portion, and the diameter of the eccentric wheel is larger than the diameter of the through hole. The guide plate has a guide block, and the guide block has a push block. The push block abuts against the side wall of the eccentric wheel. Rotating the tension knob can drive the eccentric wheel to rotate. At this time, the rotation of the eccentric wheel can push the guide block and the guide plate to move forward synchronously. The eccentric wheel has a reset plate, and the reset plate can abut against the push block. Rotating the tension knob in the opposite direction can drive the guide block and the guide plate to move backward synchronously through the reset plate.

[0010] Furthermore, the extension portion is provided with symmetrical fixing holes, the eccentric wheel is provided with symmetrical mounting holes, and fixing rods are provided in the mounting holes and fixing holes.

[0011] Furthermore, the tension knob has a mounting groove, the connecting hole is located at the bottom of the mounting groove, the bottom of the clamping knob has a rotating part, the inner ring of the mounting groove has a rotating channel, the rotating part is located in the rotating channel, the top of the threaded rod has a connecting block, the tension knob has a fixing groove, the connecting block is fixedly located in the fixing groove, the side wall of the fixing groove has a limiting platform, the connecting block has symmetrical mounting plates, and the limiting platform is located between the symmetrical mounting plates.

[0012] Furthermore, the chainsaw body is provided with a guide block, the guide plate is provided with a guide channel, the guide block is disposed in the guide channel, the guide plate can move back and forth along the guide block, the guide plate is provided with a linkage rod, the guide block is provided with a linkage hole, the top end of the linkage rod is disposed in the linkage hole, the chainsaw body is provided with a limit channel, and the bottom end of the linkage rod passes through the guide plate and protrudes into the limit channel.

[0013] Furthermore, the chainsaw body includes a left housing and a right housing, with a transmission space between the left and right housings. A gearbox and a power motor are located within the transmission space. The gearbox contains a transmission gear and a rotating shaft connected to the transmission gear. The power motor has a drive gear meshing with the transmission gear. One end of the rotating shaft passes through the chainsaw body, protruding outside the chainsaw body and connecting to a sprocket. The other end of the rotating shaft passes through the gearbox, protruding into the transmission space. An oil reservoir and a gear oil pump are also located within the transmission space. The gear oil pump has an oil outlet gear meshing with the other end of the rotating shaft. The bottom of the oil reservoir has an oil collection trough, and an oil inlet hole is opened on the side wall of the oil collection trough. The gear oil pump has an oil outlet port and an oil inlet port, with an oil inlet pipe connected between the oil inlet port and the oil inlet hole. An oil outlet hole is opened on the right housing, with an oil outlet pipe connected between the oil outlet port and the oil outlet hole. The chain is located on one side of the oil outlet hole and corresponds to the position of the oil outlet hole.

[0014] Furthermore, a placement groove is provided on the left housing, the oil can is placed in the placement groove, one end of the oil can is provided with an oil filling port, the oil filling port is exposed outside the chainsaw body, and an oil cap is closed on the oil filling port.

[0015] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0016] This utility model belongs to the field of garden tool technology, specifically referring to a locking mechanism for a chain guide plate. It includes a chainsaw body with a sprocket and a guide plate mounted on it. The guide plate is located in front of the sprocket, and the chain is wound around the guide plate and sprocket. When the motor inside the chain body operates, it smoothly drives the sprocket to rotate. The rotation of the sprocket causes the chain to rotate at high speed around the guide plate, allowing the chainsaw to function normally. The locking assembly consists of a side cover plate and a clamping knob, which secure the guide plate in place. On the chainsaw body, one end of the guide plate is positioned within the mounting space between the side cover and the chainsaw body, thus preventing the chain from being exposed and improving the chainsaw's safety. The threaded rod on the clamping knob can be positioned within a threaded hole in the chainsaw body. The clamping knob is rotatably mounted on the side cover; by rotating the knob, the user can move the knob and side cover inward to clamp the guide plate onto the chainsaw body. This design eliminates the need to unscrew the knob from the guide plate cover when replacing the chain on other chainsaws on the market. This method involves removing the guide plate cover from the chainsaw, ultimately separating the knob from the cover, which can easily lead to knob loss and render the chainsaw unusable. However, this invention features a snap-fit ​​part on the side cover and a connecting part on the clamping knob. The connecting part can rotate relative to the snap-fit ​​part and engages with it. Therefore, when the user rotates the clamping knob, it is not affected by the snap-fit ​​part, allowing the user to still normally rotate the clamping knob to lock the guide plate onto the chainsaw body. When replacing the chain, the user first rotates the clamping knob... After the threaded rod disengages from the threaded hole, the side cover plate can be removed from the chainsaw body. Because the connecting part on the clamping knob engages with the snap-fit ​​part on the side cover plate, the clamping knob is prevented from separating from the side cover plate, thus avoiding the loss of the clamping knob. Moreover, this structure between the clamping knob and the side cover plate meets the requirements of some foreign countries for chainsaws, making the chainsaw's sales range wider. Furthermore, the clamping knob will not fall off the side cover plate during the use of the chainsaw, improving the chainsaw's safety. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is an exploded view of the chainsaw body and side cover plate of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of this utility model.

[0020] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0021] Figure 5 This is a schematic diagram of the side cover plate and eccentric wheel of this utility model.

[0022] Figure 6 This is an exploded view of the side cover plate, the clamping knob, and the tensioning knob of this utility model.

[0023] Figure 7 This is an exploded view of the tension knob and eccentric wheel of this utility model.

[0024] Figure 8 This is an exploded view of the clamping knob and tensioning knob of this utility model.

[0025] Figure 9 This is a perspective view of the tension knob of this utility model.

[0026] Figure 10 This is a cross-sectional view of the clamping knob and tensioning knob of this utility model.

[0027] Figure 11 This is an exploded view of the threaded rod and clamping knob of this utility model.

[0028] Figure 12 This is an exploded view of the chainsaw body and guide plate of this utility model.

[0029] Figure 13 This is an exploded view of the guide plate and guide block of this utility model.

[0030] Figure 14 This is an exploded view of the left and right shells of this utility model.

[0031] Figure 15 This is a schematic diagram of the internal structure of the right shell of this utility model.

[0032] Figure 16 This is an exploded view of the oil can and its casing of this utility model.

[0033] Figure 17 This is a perspective view of the left shell of this utility model.

[0034] Figure 18 This is a perspective view of the gear oil pump of this utility model.

[0035] Figure 19 This is a cross-sectional view of the oil can of this utility model.

[0036] Figure 20 This is an exploded view of the oil can and oil cap of this utility model.

[0037] Figure 21 This is a schematic diagram of the structure of the oil outlet gear and the rotating shaft of this utility model.

[0038] Figure 22 This is a schematic diagram of the internal structure of the gearbox of this utility model.

[0039] The meaning of the labels in the diagram:

[0040] 1-Chainsaw body; 2-Guide plate; 3-Chain; 4-Pressure knob; 5-Tension knob; 6-Threaded rod;

[0041] 7-Connecting hole; 8-Connecting part; 9-Snap-fit ​​part; 10-Threaded hole; 11-First snap-fit ​​element;

[0042] 12-Second fastener; 13-First mounting platform; 14-Second mounting platform;

[0043] 16-Snap-on block; 17-Guide slope; 18-Snap-on slope; 19-Connecting block; 20-Fixing groove;

[0044] 21-Limiting platform; 22-Mounting plate; 23-Mounting groove; 24-Rotating part; 25-Rotating channel;

[0045] 26-Guide block; 27-Guide channel; 28-Guide block; 29-Eccentric wheel; 30-Push block;

[0046] 31-Reset plate; 33-Fixing hole; 34-Mounting hole; 35-Connecting rod;

[0047] 36-Linkage hole; 37-Limiting channel; 38-Side cover plate; 39-Through hole; 40-Extension section;

[0048] 41-Left housing; 43-Right housing; 44-Transmission space; 45-Gearbox; 46-Power motor;

[0049] 47-Transmission gear; 48-Rotating shaft; 49-Driving gear; 50-Sprocket; 51-Oil can;

[0050] 52-Gear oil pump; 53-Outlet gear; 54-Oil collection groove; 55-Oil inlet; 56-Outlet port;

[0051] 57-Oil inlet; 58-Oil outlet; 59-Placement slot; 61-Oil filling port; 62-Oil cap. Detailed Implementation

[0052] The present invention will be further described below with reference to specific embodiments:

[0053] This utility model belongs to the field of garden tool technology, specifically referring to a locking mechanism for a chain 3 and a guide plate 2. It includes a chainsaw body 1, on which a sprocket 50 and a guide plate 2 are mounted. The guide plate 2 is located in front of the sprocket 50, and the chain 3 is arranged around the guide plate 2 and the sprocket 50. When the motor inside the chain 3 operates, it can smoothly drive the sprocket 50 to rotate. The rotation of the sprocket 50 will drive the chain 3 to rotate at high speed around the guide plate 2, thus enabling the chainsaw to be used normally. The locking assembly consists of a side cover plate 38 and a clamping knob 4. The side cover plate 38 and the clamping knob 4 can... The guide plate 2 is fixed to the chainsaw body 1. One end of the guide plate 2 is located in the installation space between the side cover plate 38 and the chainsaw body 1, thereby preventing the chain 3 on the chainsaw body 1 from being exposed and improving the safety of the chainsaw. The threaded rod 6 on the clamping knob 4 can be set in the threaded hole 10 of the chainsaw body 1. The clamping knob 4 is rotatably mounted on the side cover plate 38. The user can rotate the clamping knob 4 to move the clamping knob 4 and the side cover plate 38 inward to clamp the guide plate 2 onto the chainsaw body 1. Compared with the chainsaws on the market, which usually require the knob to be pressed off the guide plate 2 before replacing the chain 3, this method is more convenient. After the cover is rotated down, the guide plate 2 cover can be removed from the chainsaw, ultimately separating the knob from the guide plate 2 cover. This can easily lead to the knob being lost, rendering the chainsaw unusable. However, the side cover 38 of this invention has a locking part 9, and the clamping knob 4 has a connecting part 8. The connecting part 8 can rotate relative to the locking part 9 and engage with the locking part 9. Therefore, when the user rotates the clamping knob 4, it will not be affected by the locking part 9. The user can still rotate the clamping knob 4 normally to lock the guide plate 2 onto the chainsaw body 1. When the user replaces the chain 3, the user first rotates the clamping knob... After the button 4 disengages the threaded rod 6 from the threaded hole 10, the side cover plate 38 can be removed from the chainsaw body 1. Since the connecting part 8 on the clamping knob 4 is engaged with the snap-fit ​​part 9 on the side cover plate 38, the separation of the clamping knob 4 from the side cover plate 38 can be restricted, thus preventing the loss of the clamping knob 4. Moreover, this structure between the clamping knob 4 and the side cover plate 38 can meet the requirements of some foreign countries for chainsaws, making the sales range of chainsaws wider. In addition, the clamping knob 4 will not fall off the side cover plate 38 during the use of the chainsaw, improving the safety of the chainsaw.

[0054] Preferably, the side cover plate 38 includes a rotatably mounted tension knob 5, which controls the guide plate 2 to move back and forth relative to the sprocket 50. The clamping knob 4 is rotatably mounted on the tension knob 5. The tension knob 5 has a connecting hole 7. The threaded rod 6 passes through the connecting hole 7 and enters the threaded hole 10. The locking part 9 includes a first locking member 11 and a second locking member 12 disposed on the inner wall of the connecting hole 7. The connecting part 8 is disposed on the threaded rod 6 and located in the connecting hole 7. The top end of the connecting part 8 abuts against the first locking member 11 and the second locking member 12. The inner wall of the connecting hole 7 is provided with a first mounting platform 13 and a second mounting platform 14. The first fastener 11 and the second fastener 12 are respectively disposed on the first mounting platform 13 and the second mounting platform 14, and the top of the first fastener 11 and the second fastener 12 are provided with a fastening block 16. The connecting part 8 is located below the fastening block 16, and the top of the connecting part 8 abuts against the fastening block 16. The side cover plate 38 includes a tension knob 5 rotatably disposed on the side cover plate 38. The tension knob 5 allows the user to adjust the tension of the chain 3 on the guide plate 2 by rotating the tension knob 5. The setting of 7 allows the threaded rod 6 to pass smoothly through the connecting hole 7 and enter the threaded hole 10 of the chainsaw body 1. The first latch 11 and the second latch 12 are respectively located on the first mounting platform 13 and the second mounting platform 14 on the inner wall of the connecting hole 7. The top of the first latch 11 and the second latch 12 are both equipped with latching blocks 16. The connecting part 8 is set on the threaded rod 6 and is located inside the connecting hole 7. The latching blocks 16 are located above the connecting part 8 and abut against the top of the connecting part 8, thereby ensuring that the threaded rod 6 cannot come out of the connecting hole 7 and that the tensioning knob 5 and the clamping knob 4 will not separate.

[0055] Preferably, the latching block 16 is provided with a guide slope 17, and the bottom of the connecting part 8 is provided with a latching slope 18 that matches the guide slope 17. In order to make it easier for workers to install the two knobs together, the latching slope 18 at the bottom of the connecting part 8 matches the guide slope 17 on the latching block 16. So when the worker is assembling, he only needs to align the threaded rod 6 with the connecting hole 7, and then push the threaded rod 6 towards the connecting hole 7. At this time, the latching slope 18 at the bottom of the latching part 9 will contact the guide slope 17 on the latching block 16. The latching plate has a certain elasticity, so when the user continues to push the threaded rod 6, the latching part 9 can enter the connecting hole 7 more smoothly, so that the latching part 9 and the latching block 16 are latched together.

[0056] Preferably, the side cover plate 38 has a through hole 39, and the inner end of the tension knob 5 has an extension 40. The extension 40 passes through the through hole 39 and protrudes into the installation space. An eccentric wheel 29 is fixedly connected to the extension 40. The diameter of the eccentric wheel 29 is larger than the diameter of the through hole 39. The guide plate 2 has a guide block 28, and the guide block 28 has a push block 30. The push block 30 abuts against the side wall of the eccentric wheel 29. Rotating the tension knob 5 can drive the eccentric wheel 29 to rotate. At this time, the rotation of the eccentric wheel 29 can push the guide block 28 and the guide plate 2 to move forward synchronously. The eccentric wheel 29 is equipped with a reset plate 31, which can abut against the push block 30. Reverse rotation of the tension knob 5 can cause the guide block 28 and guide plate 2 to move backward synchronously via the reset plate 31. The through hole 39 on the side cover plate 38 allows the extension 40 of the tension knob 5 to pass smoothly through the through hole 39 and protrude into the installation space. The eccentric wheel 29 is fixedly connected to the extension 40, and the diameter of the eccentric wheel 29 is larger than the diameter of the through hole 39, making the tension knob 5 inseparable from the side cover plate 38. Therefore, when the threaded rod 6 disengages from the threaded hole 10 of the chainsaw body 1, this… When the user removes the side cover plate 38 from the chainsaw body 1, the tension knob 5 and the clamping knob 4 will be removed together with the side cover plate 38. The side cover plate 38, tension knob 5, and clamping knob 4 cannot be separated, thus greatly reducing the loss rate of these three components. Furthermore, when the user rotates the tension knob 5, the eccentric wheel 29 connected to it will rotate eccentrically. Since the pushing block 30 on the guide block 28 abuts against the side wall of the eccentric wheel 29, the rotation of the eccentric wheel 29 will push... When the guide block 28 moves forward, the guide plate 2 connected to the guide block 28 will move forward relative to the sprocket 50, thereby tightening the chainsaw on the guide plate 2. When the user rotates the tension knob 5 in the opposite direction, the reset plate 31 on the eccentric wheel 29 will first contact the push block 30. After rotating the tension knob 5, the reset plate 31 will drive the push block 30 to move inward, thereby causing the guide block 28 and the guide plate 2 to move inward synchronously, completing the loosening of the chain 3. The user only needs to rotate the tension knob 5 to move it back and forth, thus making it convenient for the user to adjust the tension of the chain 3.

[0057] Preferably, the extension 40 has symmetrically provided fixing holes 33, and the eccentric wheel 29 has symmetrically provided mounting holes 34. The mounting holes 34 and fixing holes 33 are provided with fixing rods. The eccentric wheel 29 is fixedly connected to the tension knob 5 through the fixing rods in the mounting holes 34 and fixing holes 33. There are two fixing holes 33, two mounting holes 34, and two fixing rods, so as to ensure that when the tension knob 5 is rotated, it can drive the eccentric wheel 29 to rotate synchronously, so that the tension of the chain 3 can be adjusted normally.

[0058] Preferably, the tension knob 5 has a mounting groove 23, the connecting hole 7 is located at the bottom of the mounting groove 23, the bottom of the clamping knob 4 has a rotating part 24, the mounting groove 23 has a rotating channel 25, the rotating part 24 is located in the rotating channel 25, the top of the threaded rod 6 has a connecting block 19, the tension knob 5 has a fixing groove 20, the connecting block 19 is fixedly located in the fixing groove 20, the side wall of the fixing groove 20 has a limiting platform 21, the connecting block 19 has symmetrically arranged mounting plates 22, and the limiting platform 21 is located between the symmetrical mounting plates 22. The threaded rod 6 is fixedly connected to the tension knob 5 in the fixed groove 20 via the connecting block 19. The limiting platform 21 on the side wall of the fixed groove 20 is located between the symmetrical mounting plates 22, which makes the connection between the threaded rod 6 and the tension knob 5 more stable and firm, and prevents the connecting block 19 from coming out of the fixed groove 20. The setting of the rotating channel 25 and the rotating part 24 ensures that when the clamping knob 4 rotates inward relative to the tension knob 5, the clamping knob 4 can only rotate along the rotating channel 25, so that the rotating channel 25 plays a guiding role, and thus the angle of the clamping knob 4 will not deviate when the clamping knob 4 rotates inward.

[0059] Preferably, the chainsaw body 1 is provided with a guide block 26, the guide plate 2 is provided with a guide channel 27, the guide block 26 is disposed in the guide channel 27, the guide plate 2 can move back and forth along the guide block 26, the guide plate 2 is provided with a connecting rod 35, the guide block 28 is provided with a connecting hole 36, the top end of the connecting rod 35 is disposed in the connecting hole 36, the chainsaw body 1 is provided with a limiting channel 37, and the bottom end of the connecting rod 35 passes through the guide plate 2 and protrudes into the limiting channel 37; because the guide block 26 on the chainsaw body 1 is disposed in the guide plate 2... The guide plate 2 is located in the guide channel 27, so that the guide plate 2 can only move back and forth along the guide block 26 when it moves; the linkage rod 35 on the guide plate 2 is set in the linkage hole 36 of the guide block 28 and connected to the guide block 28, so that when the guide block 28 moves, the guide plate 2 can be moved through the linkage rod 35. The bottom of the linkage rod 35 is exposed in the limiting channel 37 of the chainsaw body 1, so that the bottom end of the linkage rod 35 will not contact the upper surface of the chainsaw body 1, thereby reducing the friction force that needs to be overcome when guiding the movement, and making it easier for the user to turn the tension knob 5.

[0060] Preferably, the chainsaw body 1 includes a left housing 41 and a right housing 43, with a transmission space 44 between the left housing 41 and the right housing 43. A gearbox 45 and a power motor 46 are housed within the transmission space 44. The gearbox 45 contains a transmission gear 47 and a rotating shaft 48 connected to the transmission gear 47. The power motor 46 has a drive gear 49 that meshes with the transmission gear 47. One end of the rotating shaft 48 passes through the chainsaw body 1, protruding outside the chainsaw body 1 and connected to a sprocket 50. The other end of the rotating shaft 48 passes through the gearbox 45 and protrudes into the transmission space 44. An oil reservoir 51 and a gear oil pump 5 are also housed within the transmission space 44. 2. The gear oil pump 52 is equipped with an oil outlet gear 53 that meshes with the other end of the rotating shaft 48. The bottom of the oil reservoir 51 is equipped with an oil collection groove 54, and the side wall of the oil collection groove 54 is provided with an oil inlet hole 55. The gear oil pump 52 is equipped with an oil outlet port 56 and an oil inlet port 57. An oil inlet pipe is connected between the oil inlet port 57 and the oil inlet hole 55. An oil outlet hole 58 is provided on the right housing 43. An oil outlet pipe is provided between the oil outlet port 56 and the oil outlet hole 58. The chain 3 is located on one side of the oil outlet hole 58 and corresponds to the position of the oil outlet hole 58. The transmission space 44 allows the gearbox 45 and the power motor 46 to be smoothly installed inside the chainsaw body 1. When the power motor 46 starts working, the drive gear 49 on the power motor 46 will rotate, driving the transmission gear 47 to rotate, which in turn drives the rotating shaft 48 to rotate. At this time, the sprocket 50 located at one end of the rotating shaft 48 will rotate, thereby driving the chain 3 to rotate at high speed. When the rotating shaft 48 rotates, the oil outlet gear 53 meshing with the other end of the rotating shaft 48 will also rotate. Under the rotation of the oil outlet gear 53, the gear oil pump 52 starts working. The gear oil pump 52 is a common fluid conveying device on the market. Because the oil inlet 57 on the gear oil pump 52 and the side wall of the oil collection tank 54... An oil inlet pipe is connected between the oil inlet holes 55 and the oil outlet port 56 on the gear oil pump 52 and the oil outlet hole 58 on the right housing 43. The chain 3 is located directly to the right of the oil outlet hole 58. When the gear oil pump 52 can draw the lubricating oil in the oil collection tank 54 into the gear oil pump 52 through the oil inlet pipe, the lubricating oil will eventually be sprayed onto the chain 3 through the oil outlet pipe and the oil outlet hole 58, thereby preventing the chain 3 from overheating and being damaged. When the user holds the chainsaw to work, the oil collection tank 54 is located at the bottom of the oil can 51, so that the last oil in the oil can 51 can sink into the oil collection tank 54, so that the oil in the oil can 51 can be used up as much as possible.

[0061] Preferably, the left housing 41 has a placement groove 59, and the oil can 51 is placed in the placement groove 59. One end of the oil can 51 has an oil filling port 61, which protrudes outside the chainsaw body 1, and an oil cap 62 is closed on the oil filling port 61. The placement groove 59 is slightly smaller than the oil can 51, so that when the worker assembles the oil can 51 into the placement groove 59, the oil can 51 is in a tight fit with the inner wall of the placement groove 59, so that the oil can 51 will not shake. The oil filling port 61 of the oil can 51 protrudes from the chainsaw body 1, which facilitates the oiling of the oil can 51. When using it, the user only needs to remove the oil cap 62 from the oil filling port 61 to add oil to the oil can 51. After adding oil, the oil cap 62 is closed back to the oil filling port, thus preventing dust or debris from entering the oil can 51.

[0062] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A locking mechanism for a chain guide plate, comprising a chainsaw body (1), a sprocket (50) disposed on the chainsaw body (1), a guide plate (2) disposed in front of the sprocket (50), a chain (3) circumferentially disposed on the guide plate (2) and the sprocket (50), and a locking assembly for fixing the guide plate (2) to the chainsaw body (1), characterized in that: The locking assembly includes a side cover plate (38) and a clamping knob (4) rotatably mounted on the side cover plate (38). An installation space is formed between the side cover plate (38) and the chainsaw body (1). One end of the guide plate (2) is located in the installation space. The clamping knob (4) is provided with a threaded rod (6). The chainsaw body (1) is provided with a threaded hole (10). The threaded rod (6) can be located in the threaded hole (10) and connected to the chainsaw body (1). Rotating the clamping knob (4) can fix the guide plate (2) located in the installation space to the chainsaw body (1). The side cover plate (38) is provided with a snap-fit ​​part (9). The clamping knob (4) is provided with a connecting part (8). The connecting part (8) can rotate relative to the snap-fit ​​part (9) and snap-fit ​​with the snap-fit ​​part (9), thereby restricting the separation of the side cover plate (38) and the clamping knob (4).

2. The locking mechanism for a chain guide plate according to claim 1, characterized in that: The side cover plate (38) includes a rotatable tension knob (5). Driving the tension knob (5) can control the guide plate (2) to move back and forth relative to the sprocket (50). The clamping knob (4) is rotatably mounted on the tension knob (5). The tension knob (5) has a connecting hole (7). The threaded rod (6) passes through the connecting hole (7) and enters the threaded hole (10). The snap-fit ​​part (9) includes a first snap-fit ​​member (11) and a second snap-fit ​​member (12) mounted on the inner wall of the connecting hole (7). The connecting part (8) is mounted on the threaded rod (6) and located in the connecting hole (7). The top end of the connecting part (8) abuts against the first snap-fit ​​member (11) and the second snap-fit ​​member (12).

3. The locking mechanism for a chain guide plate according to claim 2, characterized in that: The inner wall of the connecting hole (7) is provided with a first mounting platform (13) and a second mounting platform (14). The first fastener (11) and the second fastener (12) are respectively mounted on the first mounting platform (13) and the second mounting platform (14). The top of the first fastener (11) and the second fastener (12) are provided with a fastening block (16). The connecting part (8) is located below the fastening block (16), and the top of the connecting part (8) abuts against the fastening block (16).

4. The locking mechanism for a chain guide plate according to claim 3, characterized in that: The buckle block (16) is provided with a guide slope (17), and the bottom of the connecting part (8) is provided with a snap-fit ​​slope (18) that is adapted to the guide slope (17).

5. A locking mechanism for a chain guide plate according to any one of claims 2-4, characterized in that: The side cover plate (38) has a through hole (39). The inner end of the tension knob (5) has an extension (40). The extension (40) passes through the through hole (39) and protrudes into the installation space. An eccentric wheel (29) is fixedly connected to the extension (40). The diameter of the eccentric wheel (29) is larger than the diameter of the through hole (39). The guide plate (2) has a guide block (28). The guide block (28) has a push block (30). The tension knob (5) abuts against the side wall of the eccentric wheel (29). Rotating the tension knob (5) can drive the eccentric wheel (29) to rotate. At this time, the rotation of the eccentric wheel (29) can push the guide block (28) and the guide plate (2) to move forward synchronously. The eccentric wheel (29) is provided with a reset plate (31). The reset plate (31) can abut against the push block (30). Rotating the tension knob (5) in the opposite direction can drive the guide block (28) and the guide plate (2) to move backward synchronously through the reset plate (31).

6. The locking mechanism for a chain guide plate according to claim 5, characterized in that: The extension (40) is provided with symmetrical fixing holes (33), and the eccentric wheel (29) is provided with symmetrical mounting holes (34). Fixing rods are provided in the mounting holes (34) and fixing holes (33).

7. A locking mechanism for a chain guide plate according to any one of claims 2-4, characterized in that: The tension knob (5) has an installation groove (23), the connecting hole (7) is located at the bottom of the installation groove (23), the bottom of the clamping knob (4) has a rotating part (24), the installation groove (23) has a rotating channel (25) in the inner ring, the rotating part (24) is located in the rotating channel (25), the top of the threaded rod (6) has a connecting block (19), the tension knob (5) has a fixing groove (20), the connecting block (19) is fixedly located in the fixing groove (20), the side wall of the fixing groove (20) has a limiting platform (21), the connecting block (19) has symmetrically arranged mounting plates (22), and the limiting platform (21) is located between the symmetrical mounting plates (22).

8. The locking mechanism for a chain guide plate according to claim 5, characterized in that: The chainsaw body (1) is provided with a guide block (26), the guide plate (2) is provided with a guide channel (27), the guide block (26) is set in the guide channel (27), the guide plate (2) can move back and forth along the guide block (26), the guide plate (2) is provided with a linkage rod (35), the guide block (28) is provided with a linkage hole (36), the top end of the linkage rod (35) is set in the linkage hole (36), the chainsaw body (1) is provided with a limit channel (37), and the bottom end of the linkage rod (35) passes through the guide plate (2) and protrudes into the limit channel (37).

9. A locking mechanism for a chain guide plate according to any one of claims 2-4, characterized in that: The chainsaw body (1) includes a left housing (41) and a right housing (43). A transmission space (44) is provided between the left housing (41) and the right housing (43). A gearbox (45) and a power motor (46) are provided in the transmission space (44). A transmission gear (47) and a rotating shaft (48) connected to the transmission gear (47) are provided in the gearbox (45). A drive gear (49) meshing with the transmission gear (47) is provided on the power motor (46). One end of the rotating shaft (48) passes through the chainsaw body (1) and protrudes outside the chainsaw body (1) and is connected to the sprocket (50). The other end of the rotating shaft (48) passes through the gearbox (45) and protrudes into the transmission space (44). The chamber (44) is also equipped with an oil can (51) and a gear oil pump (52). The gear oil pump (52) is equipped with an oil outlet gear (53) that meshes with the other end of the rotating shaft (48). The bottom of the oil can (51) is equipped with an oil collection groove (54). The side wall of the oil collection groove (54) is provided with an oil inlet hole (55). The gear oil pump (52) is equipped with an oil outlet interface (56) and an oil inlet interface (57). An oil inlet pipe is connected between the oil inlet interface (57) and the oil inlet hole (55). An oil outlet hole (58) is provided on the right housing (43). An oil outlet pipe is provided between the oil outlet interface (56) and the oil outlet hole (58). The chain (3) is located on one side of the oil outlet hole (58) and corresponds to the position of the oil outlet hole (58).

10. The locking mechanism for a chain guide plate according to claim 9, characterized in that: The left housing (41) is provided with a placement groove (59), and the oil can (51) is placed in the placement groove (59). One end of the oil can (51) is provided with an oil filling port (61), which is exposed outside the chainsaw body (1), and an oil cap (62) is closed on the oil filling port (61).

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