Guide plate oil supply structure of chain saw

Abstract

The utility model belongs to the technical field of oil saw, especially relate to a guide plate oil supply structure of oil saw, it solved the problem that it is difficult to oil lubrication to guide wheel. The guide plate oil supply structure of this oil saw, including the guide plate, be equipped with chain groove on the thickness surface of guide plate, be equipped with the oil guide hole on the installation end of guide plate, the both ends of oil guide hole are linked with oil supply assembly and chain groove respectively, can transmit the lubricating oil provided by oil supply assembly to the chain in chain groove, and transport to guide wheel. Realized the effect that can transmit lubricating oil to guide wheel, slow down the friction between guide wheel and guide plate, is favorable for prolonging the service life of guide plate, guarantees the stable operation of equipment.

Description

Technical Field

[0001] This utility model belongs to the field of chainsaw technology, and specifically relates to a guide plate oil supply structure for chainsaws. Background Technology

[0002] A chainsaw is a hand-held saw powered by a gasoline engine, mainly used for logging and timber processing. Its core component is the saw chain, which completes the cutting operation through the lateral shearing action of the L-shaped blades. The saw chain is generally circular, with both ends connected to a drive wheel and a guide wheel, respectively. A guide plate is installed between the drive wheel and the guide wheel, and the guide wheel is rotatably connected to the front end of the guide plate.

[0003] However, most existing chainsaws lack a corresponding lubrication mechanism between the guide wheel and the guide plate, making it difficult to quickly and timely lubricate the friction between them. As the usage time increases, the temperature of the guide plate may rise, affecting its service life and the stable operation of the equipment. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a guide plate oil supply structure for a chainsaw.

[0005] To achieve the innovative objectives of this utility model, the following technical solutions can be used:

[0006] A guide plate oil supply structure for a chainsaw includes a guide plate with a chain groove on its thickness surface and an oil guide hole on its mounting end. The two ends of the oil guide hole are connected to an oil supply component and the chain groove, respectively, and can transmit the lubricating oil provided by the oil supply component to the chain in the chain groove and then to the guide wheel.

[0007] The guide plate oil supply structure of this utility model is specifically set on the guide plate. One end of the guide plate is detachably and fixedly connected to the chainsaw body, which is the installation end. The other end is provided with a guide wheel. The chain is in the shape of a ring and rotates between the guide wheel and the drive wheel on the chainsaw body. The guide plate is plate-shaped with recessed chain grooves on its thick surface. These grooves are used to position the chain's rotation. The chain drive plates are confined within the chain grooves and slide against the sidewalls of the grooves. Notably, an oil guide hole is provided on the plate surface at the mounting end of the guide plate. This oil guide hole corresponds to the oil supply port of the oil supply assembly on the chainsaw, allowing it to receive lubricating oil from the oil supply port and supply it to the chain. The chain has an oil receiving and storage structure for temporarily storing or retaining lubricating oil. As the chain rotates, the lubricating oil on it is transferred to the guide wheel when it reaches the guide wheel. This lubricates the friction between the guide wheel and the guide plate, as well as the friction between the chain and the guide wheel, reducing rotational resistance and mitigating temperature changes caused by sliding friction, thus extending the service life of the guide plate.

[0008] In the above-mentioned guide plate oil supply structure, the oil guide hole includes an oil inlet and an oil outlet. The oil inlet is located on the inner wall of one or both sides of the chain groove, and the oil outlet is located on the outer plate surface of the guide plate. The oil inlet and the oil outlet are connected by a connecting section.

[0009] The oil inlet is located on the outer plate surface, opposite to the oil supply port of the oil supply component of the chainsaw body. The oil outlet is located on the inner side, corresponding to the oil receiving and storage structure on the chain drive plate. The depth direction of the oil guide hole can be linear, that is, the oil inlet and oil outlet are set coaxially, which is equivalent to the oil guide hole penetrating the side wall of the chain groove along the thickness direction. Alternatively, the oil outlet can also be set on the two side walls of the chain groove. The oil inlet is preferably set on the plate below the chain groove of the guide plate. The connecting section connects the oil inlet with the two oil outlets, so that lubricating oil can be output from the two sides of the chain groove.

[0010] In the above-mentioned guide plate oil supply structure, one or more oil guide holes are provided, and at least one is located on the side near the chain inlet of the chain groove.

[0011] The chain groove is open on the end face of the mounting end. The chain enters from one of the openings, which is the chain inlet. The oil guide hole is set here so that the lubricating oil can be directly delivered to the guide wheel after the chain enters, reducing the leakage and waste of lubricating oil during the chain's movement from the chain outlet to the chain inlet. Setting multiple oil guide holes can ensure that the lubricating oil is delivered to the chain.

[0012] In the above-mentioned guide plate oil supply structure, the oil guide hole is a slot hole, which is parallel to the guide plate connecting slot hole on the mounting end, and its length is adapted to the length of the guide plate connecting slot hole.

[0013] The mounting end is provided with a guide plate connection slot for bolt installation. The length direction of the slot is adapted to the length direction of the guide plate. The guide plate can be extended and retracted along the length direction to tighten the chain. This is existing technology. The oil guide hole is also set in the form of a slot, that is, it has a certain length along the length direction of the guide plate to ensure smooth connection with the oil supply port of the oil supply component and the oil receiving and storage structure on the chain.

[0014] In the above-mentioned guide plate oil supply structure, the chain includes a plurality of chain shafts arranged in parallel at intervals, and a transmission plate connected between adjacent chain shafts.

[0015] The transmission plate includes a transmission part protruding into the inside of the chain. The transmission part is slidably connected to the side wall of the chain groove. The transmission part is provided with an oil receiving and storage structure corresponding to the oil outlet of the oil guide hole.

[0016] The transmission plate is connected to the chain shaft through its connecting hole, which allows circumferential rotation. The transmission part of the transmission plate protrudes inward. The thickness of the transmission plate is adapted to the width of the chain groove. The transmission plate is in contact with or almost in contact with the side of the chain groove to ensure stable rotation of the chain. The oil receiving and storage structure is set on the transmission plate. When the transmission plate slides along the chain groove through the oil guide hole, the oil receiving and storage structure can quickly receive the lubricating oil.

[0017] In the above-mentioned guide plate oil supply structure, the oil receiving and storage structure includes at least one oil receiving hole provided on the transmission part, which can receive the lubricating oil output from the guide hole and transmit it to the guide wheel on the guide plate. The oil receiving hole is a through hole or a blind hole; adjacent chain shafts are connected by connecting pieces.

[0018] A cutting blade is also provided between adjacent chain shafts. The cutting part of the cutting blade is used to apply a cutting action to the object. The transmission plate is provided with an oil receiving hole in the form of a blind hole or a through hole. A cavity is formed in the hole that is recessed into the side of the transmission plate to accommodate lubricating oil. When the oil receiving hole passes the oil supply port of the oil supply component, the lubricating oil is input into the hole. When the transmission plate moves to the guide wheel, since the side of the transmission plate is almost in contact with the side of the chain groove, only a small amount of lubricating oil flows out, which can lubricate the sliding between the transmission plate and the chain groove. When the transmission plate moves to the guide wheel, the lubricating oil in the oil receiving hole is transmitted to the guide wheel to achieve the corresponding lubrication effect.

[0019] In the above-mentioned guide plate oil supply structure, the guide plate is provided with a guide wheel at the other end of the opposite mounting end. The guide wheel includes a mounting bearing with its inner ring fixed between the two outer plates of the guide plate, and a toothed ring sleeved on the outer ring of the mounting bearing. The transmission part can mesh with the tooth groove of the toothed ring. The oil receiving and storage structure can deliver lubricating oil between the toothed ring and the transmission plate, between the toothed ring and the outer plate, and between the transmission plate and the chain groove.

[0020] The front end of the guide plate is provided with a guide wheel mounting area recessed into the thickness surface. The guide wheel is located in the guide wheel mounting area. The inner ring of the mounting bearing is fixedly connected to the side wall of the guide wheel mounting area. The toothed ring is used to mesh with the chain. The transmission part of the transmission plate meshes with the tooth groove of the toothed ring.

[0021] In the aforementioned guide plate oil supply structure, a first oil groove is provided on the side of the transmission part, one end of which is connected to the oil receiving hole, and the other end is open; a second oil groove is provided on the side of the gear ring, one end of which is open, and this open end can mate with the open end of the first oil groove when the transmission plate meshes with the gear groove; a buffer port is also provided on the transmission part and / or the gear groove, located between the open end of the first oil groove and the open end of the second oil groove 24. The buffer port extends along the thickness direction of the transmission plate.

[0022] Both the first and second oil grooves are recessed structures. The lubricating oil in the oil receiving hole can flow out from the first oil groove. On the one hand, this is beneficial for the lubrication between the transmission plate and the chain groove. On the other hand, the first oil groove can connect with the second oil groove, and the lubricating oil can flow from the first oil groove to the second oil groove to ensure the lubrication between the gear ring and the outer plate. The lubricating oil can also flow into the gear groove to lubricate the friction during the contact and release process between the gear groove and the transmission plate. Moreover, there is a certain small gap between the gear ring and the outer plate, through which the lubricating oil can also flow to the bearing assembly to apply a lubricating effect to the bearing assembly. In addition, the setting of the buffer port connects the two sides of the transmission part, and the lubricating oil flows into the buffer port, so that the lubricating oil is smoothly and in large quantities delivered to the guide wheel.

[0023] In the above-mentioned guide plate oil supply structure, the guide plate includes two parallel outer plates and an inner plate sandwiched between the two outer plates. The outer plates and the inner plate, and / or another outer plate, are detachably fixed. The width and length of the inner plate are both smaller than those of the outer plates. The chain groove is formed between the thickness surface of the inner plate and the outer plate.

[0024] The guide plate is a split type, consisting of two outer plates, one slightly larger than the other, and an inner plate, one slightly smaller than the other. The outer and inner plates are detachable and fixed together, ensuring flexible disassembly. The size difference between the outer and inner plates ensures the formation of the chain groove.

[0025] In the above-mentioned guide plate oil supply structure, the oil supply component includes an oil supply pump installed on the chainsaw body, one end of the guide plate is fixed to the chainsaw body, and the oil supply port of the oil supply pump is connected to the oil inlet of the guide hole.

[0026] The chainsaw body is equipped with an oil supply pump, the oil supply port of which can be located on one or both sides of the guide plate, and can output lubricating oil. The oil supply pump and its installation details on the chainsaw body are existing technology and will not be elaborated on.

[0027] Compared with the prior art, this utility model has an oil guide hole on the plate surface of the guide plate at the mounting end. The oil guide hole corresponds to the oil supply port of the oil supply component on the chainsaw, and can receive the lubricating oil output from the oil supply port and output it to the chain. The chain is provided with an oil receiving and storage structure for temporarily storing or retaining lubricating oil. As the chain rotates continuously, when it reaches the guide wheel, the lubricating oil on it can be transferred to the guide wheel. On the one hand, it can lubricate the friction between the guide wheel and the guide plate, and on the other hand, it can lubricate the friction between the chain and the guide wheel. This helps to reduce rotational resistance, and also alleviates the temperature changes caused by sliding friction, thereby improving the service life of the guide plate. Attached Figure Description

[0028] Figure 1 This is a rear view diagram of the guide plate;

[0029] Figure 2 This is a schematic diagram of the internal structure of the guide plate in Embodiment 1 (with the front outer plate body hidden).

[0030] Figure 3 This is a cross-sectional schematic diagram of the fit between the oil guide hole and the oil supply port;

[0031] Figure 4 This is a schematic diagram showing the connection between the chain and the oil guide hole;

[0032] Figure 5 This is a structural diagram of a part of the chain;

[0033] Figure 6 This is a schematic diagram of the meshing engagement between the gear ring and the transmission plate;

[0034] Figure 7 This is a cross-sectional schematic diagram of the guide plate through the oil guide hole in Example 2.

[0035] In the diagram, 1 is the guide plate, 2 is the chain groove, 3 is the mounting end, 4 is the oil guide hole, 5 is the oil supply assembly, 6 is the chain, 7 is the guide wheel, 8 is the oil inlet, 9 is the oil outlet, 10 is the connecting section, 11 is the chain inlet, 12 is the guide plate connecting groove, 13 is the chain shaft, 14 is the transmission plate, 15 is the transmission part, 16 is the oil receiving and storage structure, 17 is the oil receiving hole, 18 is the first oil groove, 19 is the connecting plate, 20 is the cutting blade, 21 is the outer plate, 22 is the mounting bearing, 23 is the toothed ring, 24 is the second oil groove, 25 is the inner plate, 26 is the chainsaw body, 27 is the oil supply port, 28 is the toothed groove, and 29 is the buffer port. Detailed Implementation

[0036] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example 1

[0037] Specific implementation examples Figure 1-6 As shown, the guide plate oil supply structure of this chainsaw includes a guide plate 1, a chain groove 2 on the thickness surface of the guide plate 1, and an oil guide hole 4 on the mounting end 3 of the guide plate 1. The two ends of the oil guide hole 4 are respectively connected to the oil supply component 5 and the chain groove 2, which can transmit the lubricating oil provided by the oil supply component 5 to the chain 6 in the chain groove 2 and deliver it to the guide wheel 7.

[0038] Specifically, an oil guide hole 4 is provided on the plate surface of the guide plate 1 at the mounting end 3. The oil guide hole 4 corresponds to the oil supply port 27 of the oil supply component 5 on the chainsaw. It can receive the lubricating oil output from the oil supply port 27 and output it to the chain 6. An oil receiving and storage structure 16 for temporarily storing or retaining lubricating oil is provided on the chain 6. As the chain 6 rotates continuously, when it rotates to the guide wheel 7, the lubricating oil on it can be transferred to the guide wheel 7. On the one hand, it can lubricate the friction between the guide wheel 7 and the guide plate 1, and on the other hand, it can lubricate the friction between the chain 6 and the guide wheel 7, reduce rotational resistance, alleviate temperature changes, improve the service life of the guide plate 1, and ensure stable operation of the equipment.

[0039] In this embodiment, the oil guide hole 4 is formed through the side wall of the chain groove 2, including an oil inlet 8 and an oil outlet 9. The oil inlet 8 is located on the outer plate surface of the guide plate 1, and the oil outlet 9 is located on the inner side surface of one side of the chain groove 2. The oil guide hole 4 is a slot hole, which is parallel to the guide plate connecting slot 12 on the mounting end 3, and its length is adapted to the length of the guide plate connecting slot 12.

[0040] Specifically, the oil guide hole 4 extends through the outer plate 21, and its position is adapted to the position of the transmission plate 14 of the chain 6, enabling direct transmission of lubricating oil to the oil receiving and storage structure 16 on the transmission plate 14. The oil guide hole 4 is designed as a slot to ensure smooth connection with the oil supply port 27 of the oil supply assembly 5 and the oil receiving and storage structure 16 on the chain 6.

[0041] like Figure 4 , 5 As shown in Figure 6, the chain 6 includes several parallel and spaced chain shafts 13, and a transmission plate 14, a connecting plate 19, and a cutting plate 20 connected between adjacent chain shafts 13. The transmission plate 14 includes a transmission part 15 protruding inward from the chain 6. The transmission part 15 is slidably connected to the side wall of the chain groove 2. The transmission part 15 is provided with an oil receiving and storage structure 16 corresponding to the oil outlet 9 of the oil guide hole 4. The oil receiving and storage structure 16 includes a through-hole type oil receiving hole 17 provided on the transmission part 15, which can receive the lubricating oil output from the oil guide hole 4 and transmit it to the guide wheel 7 on the guide plate 1. The cutting plate 20 includes a cutting part protruding outward from the chain 6.

[0042] Specifically, the ends of adjacent chain shafts 13 are connected by connecting pieces 19. Cutting pieces 20 and transmission pieces 14 are both connected to the ends of chain shafts 13 through their connecting holes. The transmission piece 14 is almost in contact with the side of the chain groove 2, ensuring stable rotation of the chain 6. An oil receiving and storage structure 16 is located on the outer surface of the transmission piece 14. When the transmission piece 14 slides along the chain groove 2 past the oil guide hole 4, the oil receiving and storage structure 16 can quickly collect lubricating oil. The oil receiving hole 17 on the transmission piece 14 is a through hole, forming a cavity for containing lubricating oil. When the chain 6 passes the guide wheel 7, the lubricating oil in the oil receiving hole 17 can be output to the guide wheel 7 along the inner side of the guide wheel mounting area.

[0043] like Figure 2 As shown, the guide plate 1 has a guide wheel 7 on the other end opposite the mounting end 3. The guide wheel 7 includes a mounting bearing 22 whose inner ring is fixed between the two outer plates 21 of the guide plate 1, and a toothed ring 23 sleeved on the outer ring of the mounting bearing 22. The transmission part 15 can mesh with the tooth groove of the toothed ring 23. The oil receiving and storage structure 16 can deliver lubricating oil between the toothed ring 23 and the transmission plate 14, between the toothed ring 23 and the outer plate 21, and between the transmission plate 14 and the chain groove 2. A first oil groove 18 is also provided on the side wall of the transmission part 15 near the chain groove 2. One end of the first oil groove 18 is connected to the oil receiving hole 17, and the other end is open. A second oil groove 24 is provided on the side of the toothed ring 23. One end of the second oil groove 24 is open, and this open end can connect with the open end of the first oil groove 18 when the transmission plate 14 meshes with the tooth groove. A buffer port 29 is also provided on the transmission part 15 between the open end of the first oil groove 18 and the open end of the second oil groove 24.

[0044] Specifically, the front end of the guide plate 1 has a guide wheel mounting area recessed into the thickness surface. The guide wheel 7 is located in this guide wheel mounting area, and the inner ring of its mounting bearing 22 is fixedly connected to the side wall of the guide wheel mounting area. The transmission part 15 of the transmission plate 14 meshes with the tooth groove 28 of the gear ring 23. The first oil groove 18 and the second oil groove 24 are both recessed structures. The lubricating oil in the oil receiving hole 17 can flow out from the first oil groove 18, which on the one hand realizes the lubrication between the transmission plate 14 and the chain groove 2, and on the other hand, the first oil groove 18 can connect with the second oil groove 24. The lubricating oil can flow from the first oil groove 18 to the second oil groove 24 to ensure the lubrication between the gear ring 23 and the outer plate 21. The lubricating oil can also flow into the tooth groove 28 through the buffer port 29 to lubricate during the contact between the tooth groove 28 and the transmission plate 14. In addition, the lubricating oil can also flow to the inner ring along the gap between the outer plate 21 and the gear ring 23 to achieve the lubrication effect on the mounting bearing 22.

[0045] In this embodiment, the guide plate 1 includes two parallel outer plates 21 and an inner plate 25 sandwiched between the two outer plates 21. The outer plates 21 and the inner plate 25 are detachably fixed by bolts. The width and length of the inner plate 25 are smaller than those of the outer plates 21. A chain groove 2 is formed between the thickness surface of the inner plate 25 and the outer plates 21.

[0046] Specifically, the guide plate 1 is a split type, consisting of two outer plates 21 with a slightly larger outer size and an inner plate 25 with a slightly smaller inner size. The outer plates 21 and the inner plates 25 are detachably fixed to ensure flexible disassembly. The size difference between the outer plates 21 and the inner plates 25 ensures the formation of the chain groove 2.

[0047] In this embodiment, the oil supply assembly 5 includes an oil pump mounted on the chainsaw body 26. One end of the guide plate 1 is fixed to the chainsaw body 26, and the oil supply port 27 of the oil pump is connected to the oil inlet 8 of the oil guide hole 4. Specifically, the chainsaw body 26 is equipped with an oil pump, and the oil supply port 27 of the oil pump is located on the side in contact with the guide plate 1, which can output lubricating oil.

[0048] Working principle: When the chainsaw is working, the annular chain 6 rotates along the chain groove 2 between the drive wheel and the guide wheel 7, and the transmission plate 14 slides in the chain groove 2. When lubrication is required, the oil pump outputs lubricating oil from the oil supply port 27. The lubricating oil is input from the oil inlet 8 of the oil guide hole 4 and accumulates in the connecting section 10. When the transmission plate 14 passes through the oil guide hole 4, the lubricating oil output from the oil outlet 9 enters the receiving hole 17. The transmission plate 14 moves towards the guide wheel 7. During this process, the lubricating oil in the first oil groove 18 is applied to the side wall of the chain groove 2. When passing the guide wheel 7, the transmission part 15 is engaged in the tooth groove 28 to form a meshing fit. The first oil groove 18 and the second oil groove 24 are connected. The lubricating oil in the receiving hole 17 flows along the inner side of the outer plate 21 and is output to the toothed ring 23 through the first oil groove 18 and the second oil groove 24. In particular, between the end face of the toothed ring 23 and the outer plate 21, the lubricating oil is achieved for the guide wheel 7. Example 2

[0049] The working principle of this embodiment is basically the same as that of embodiment 1, except that the oil guide hole 4 is different.

[0050] Specific implementation examples Figure 7 As shown, the oil outlet 9 of the oil guide hole 4 is located on the inner sidewalls of both sides of the chain groove 2, and the oil inlet 8 is located on the guide plate 1 below the chain groove 2. The oil inlet 8 is connected to the two oil outlets 9 through the U-shaped connecting section 10.

[0051] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A guide plate oil supply structure of a chainsaw, comprising a guide plate (1), a chain groove (2) is provided on the thickness surface of the guide plate (1), characterized in that, The mounting end (3) of the guide plate (1) is provided with an oil guide hole (4). The two ends of the oil guide hole (4) are connected to the oil supply component (5) and the chain groove (2) respectively, which can transmit the lubricating oil provided by the oil supply component (5) to the chain (6) in the chain groove (2) and deliver it to the guide wheel (7).

2. The guide plate oil supply structure of the chain saw according to claim 1, wherein The oil guide hole (4) includes an oil inlet (8) and an oil outlet (9). The oil inlet (8) is located on the inner wall of one or both sides of the chain groove (2), and the oil outlet (9) is located on the outer plate surface of the guide plate (1). The oil inlet (8) and the oil outlet (9) are connected by a connecting section (10).

3. The guide plate oil supply structure of the chain saw according to claim 1, wherein The oil guide hole (4) is provided in one or more, and is located at least on the side near the chain inlet (11) of the chain groove (2).

4. The guide plate oil supply structure of the chain saw according to claim 1, wherein The oil guide hole (4) is a slot hole. The oil guide hole (4) is parallel to the guide plate connecting slot (12) on the mounting end (3), and its length is adapted to the length of the guide plate connecting slot (12).

5. The guide plate oil supply structure of the chain saw according to claim 1, wherein The chain (6) includes a plurality of chain shafts (13) arranged in parallel at intervals, and a transmission plate (14) connected between adjacent chain shafts (13). The transmission plate (14) includes a transmission part (15) protruding into the inside of the chain (6). The transmission part (15) is slidably connected to the side wall of the chain groove (2). The transmission part (15) is provided with an oil receiving and storage structure (16) corresponding to the oil outlet (9) of the oil guide hole (4).

6. The guide plate oil supply structure of the chain saw according to claim 5, wherein The oil receiving and storage structure (16) includes at least one oil receiving hole (17) provided on the transmission part (15), which can receive lubricating oil output from the oil guide hole (4). The oil receiving hole (17) is a through hole or a blind hole. The adjacent chain shafts (13) are connected by connecting pieces (19).

7. The guide plate oil supply structure of the chain saw according to claim 6, wherein The guide plate (1) has a guide wheel (7) on the other end opposite to the mounting end (3). The guide wheel (7) includes a mounting bearing (22) with its inner ring fixed between two outer plates (21) of the guide plate (1), and a toothed ring (23) sleeved on the outer ring of the mounting bearing (22). The transmission part (15) can mesh with the tooth groove (28) of the toothed ring (23). The oil receiving and storage structure (16) can deliver lubricating oil between the toothed ring (23) and the transmission plate (14), between the toothed ring (23) and the outer plate (21), and between the transmission plate (14) and the chain groove (2).

8. The guide plate oil supply structure of the chain saw according to claim 7, wherein The transmission part (15) is also provided with a first oil groove (18) on its side. One end of the first oil groove (18) is connected to the oil receiving hole (17), and the other end is open. The toothed ring (23) is provided with a second oil groove (24) on its side. One end of the second oil groove (24) is open, and the open end can be connected with the open end of the first oil groove (18) when the transmission plate (14) meshes with the tooth groove (28). The transmission part (15) and / or the tooth groove (28) are also provided with a buffer port (29) located between the open end of the first oil groove (18) and the open end of the second oil groove (24), and the buffer port (29) extends along the thickness direction of the transmission plate (14).

9. The guide plate oil supply structure of the chain saw according to any one of claims 1 to 8, characterized by The guide plate (1) includes two parallel outer plates (21) and an inner plate (25) sandwiched between the two outer plates (21). The outer plates (21) and the inner plate (25), and / or another outer plate (21) are detachably fixed. The width and length of the inner plate (25) are smaller than those of the outer plates (21). The chain groove (2) is formed between the thickness surface of the inner plate (25) and the outer plate (21).

10. The guide plate oil supply structure of the chain saw according to any one of claims 1 to 8, characterized by The oil supply assembly (5) includes an oil pump installed on the chainsaw body (26), one end of the guide plate (1) is fixed on the chainsaw body (26), and the oil supply port (27) of the oil pump is connected to the oil inlet (8) of the guide hole (4).

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