A chain saw

Abstract

The present invention relates to a chain saw, which comprises a body device, a sawing device and an oil supply assembly. The body device comprises a base assembly, a driving assembly, an elastic support assembly and a locking assembly, and at least part of the elastic support assembly is slidably limited to the base assembly. The sawing device comprises a chain guide plate and a chain assembly, and the chain guide plate comprises a guide groove, at least one oil guide channel and a chain guide groove, and at least part of the chain guide groove and the oil guide channel are connected, and the oil supply assembly is connected to the oil guide channel. The elastic support assembly is connected to the chain guide plate, and the elastic support assembly applies an elastic preload on the chain guide plate in a direction away from the driving assembly, and the chain assembly is tensioned to connect the driving assembly and the chain guide plate. At least part of the base assembly is inserted into the guide groove, and the locking assembly and the base assembly clamp and lock the two side surfaces of the chain guide plate, and the driving assembly drives the chain assembly to rotate. The sawing device can be adjusted by adjusting the tightness of the locking assembly, and the oil flows smoothly and is not easy to leak.

Description

Technical Field

[0001] The present invention relates to the technical field of saws, and in particular to a chain saw. Background Art

[0002] The saw can cut plates, pipes or other materials, thereby cutting long strips of material into short pieces. For example, the public document with announcement number CN206047237U provides a tool-free disassembly and assembly gasoline saw with a built-in grinding chain. The gasoline saw has a built-in chain grinding function, and the chain can be sharpened by a chain wrench without disassembling the gasoline saw, which is convenient.

[0003] In addition, a public document with announcement number CN212094647U provides a chain saw capable of pre-tightening a chain. The chain saw drives a small gear to rotate through a large gear, so that the thread on the small gear rotates, driving the tensioning pin to move back and forth, so that the guide plate can tension the chain.

[0004] After being used for a long time, the existing chain saw will have the phenomenon that the chain with saw teeth stretches and becomes longer after rotation, which leads to technical problems such as inaccurate cutting seams of the chain saw, inconvenient tightness conditions of the chain assembly, and easy chain unfastening, so improvement is needed. Summary of the invention

[0005] In order to overcome the problems existing in the related art, an embodiment of the present invention provides a chain saw to solve the technical problems of inaccurate cutting after the chain assembly is deformed and inconvenient tightness conditions of the chain assembly.

[0006] According to a first aspect of an embodiment of the present invention, there is provided a chain saw, the chain saw comprising a body device, a sawing device mounted on the body device and an oil supply assembly, the body device comprising a base assembly, a driving assembly mounted on the base assembly, an elastic support assembly and a locking assembly, at least part of the elastic support assembly being slidably limited to the base assembly;

[0007] The sawing device comprises a chain guide plate and a chain assembly, wherein the chain guide plate comprises a long groove-shaped guide groove, at least one oil guide channel and a chain guide groove recessed from a side edge, at least a portion of the chain assembly extends into the chain guide groove, at least a portion of the chain guide groove communicates with the oil guide channel, the oil supply assembly communicates with the oil guide channel, and the oil output by the oil supply assembly flows along the oil guide channel to the chain guide groove;

[0008] The elastic bracket assembly is connected to the chain guide plate, the elastic bracket assembly applies an elastic pre-tightening force on the chain guide plate in a direction away from the driving assembly, and the chain assembly is tensioned to connect the driving assembly and the chain guide plate;

[0009] At least a portion of the base assembly is inserted into the guide groove, the locking assembly and the base assembly clamp and lock the two side surfaces of the chain guide, and the driving assembly drives the chain assembly to rotate.

[0010] In one embodiment, the elastic support assembly includes a sliding frame and at least one spring member elastically pushing the sliding frame, and the sliding frame includes at least one partially protruding pushing boss;

[0011] The base assembly includes a concave sliding groove, the sliding frame is slidably limited in the sliding groove of the base assembly, and the chain guide plate is attached to the peripheral plane of the opening of the sliding groove;

[0012] The chain guide plate comprises at least one penetrating positioning hole, and the end of the push boss exceeds the opening of the sliding slot and is plug-connected with the positioning hole in correspondence.

[0013] In one embodiment, the sliding frame includes a partially protruding guide boss, the guide boss and the push boss are spaced apart, and at least a portion of the guide boss is inserted into the guide groove.

[0014] In one embodiment, the base assembly includes a partially protruding assembly boss, a fixing column protruding from the assembly boss, and a guide block, the fixing column and the guide block are in the same straight line and inserted into the guide groove, and the sliding groove is recessed from the surface of the assembly boss;

[0015] The locking assembly is connected to the fixing column and presses and pushes the chain guide plate to fit tightly against the assembly boss.

[0016] In one embodiment, a portion of the chain guide is sealingly fitted into the assembly boss, an oil inlet chamber is formed between the chain guide, the sliding groove and the sliding frame, the oil supply assembly is connected to the oil inlet chamber, the positioning hole is connected to the oil inlet chamber, and the oil guide channel is connected from the positioning hole to the chain guide groove.

[0017] In one embodiment, the contact surface between the locking assembly and the chain guide forms a first sealing area, and the contact surface between the chain guide and the base assembly forms a second sealing area;

[0018] The oil supply assembly is communicated with the sliding groove, and the positioning holes are both located in the first sealing area and the second sealing area.

[0019] In one embodiment, at least a portion of the positioning hole and the chain guide groove intersect, and the intersection of the positioning hole and the chain guide groove forms the oil guide channel.

[0020] In one embodiment, the locking assembly includes a side guard and a locking rod rotatably connected to the side guard, the side guard includes a protruding press-fit boss, the locking rod passes through the press-fit boss and the guide groove and is threadedly connected to the machine base assembly, and the press-fit boss presses against the chain guide plate.

[0021] In one embodiment, the locking assembly also includes a locking handle rotatably mounted on the locking rod, the side guard is provided with a concave locking groove, the locking rod can be rotatably passed through the locking groove, and the locking handle includes a handle posture of flipping out of the locking groove and a locking posture of being fitted and confined in the locking groove.

[0022] In one embodiment, the locking assembly includes a sliding guide groove recessed from the pressing boss, the length direction of the sliding guide groove is parallel to the guide groove direction, and at least a portion of the elastic bracket assembly is inserted into the sliding guide groove.

[0023] The technical solution provided by the embodiment of the present invention may include the following beneficial effects: the locking assembly and the base assembly clamp and lock the chain guide plate to maintain the sawing position of the sawing device and the tension of the chain assembly at an appropriate level. When the locking assembly releases the lock on the chain guide plate, the elastic preload force of the elastic bracket assembly drives the chain guide plate to move, and the chain assembly automatically tensions the chain guide plate and the drive assembly, thereby realizing automatic repair of the tension of the chain assembly. After that, the locking assembly is locked, and the chain saw can be used. The chain guide plate guides the tensioning direction of the chain assembly through the guide groove and the sliding direction of the elastic bracket assembly, and the tensioning effect is good. The sawing device can be adjusted by adjusting the tension of the locking assembly, and the adjustment is convenient.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0026] Figure 1 The figure shows a schematic diagram of the structure of a chain saw according to an embodiment.

[0027] Figure 2 The diagram is a schematic diagram showing an exploded structure of a chain saw according to an embodiment.

[0028] Figure 3 The figure is a schematic diagram showing the structure of an elastic bracket assembly according to an embodiment.

[0029] Figure 4 The diagram is a structural diagram showing an elastic support assembly installed on a base assembly according to an embodiment.

[0030] Figure 5 The diagram is a schematic diagram showing an enlarged structure of a chain guide plate and a chain assembly at an oil guide channel according to an embodiment.

[0031] Figure 6 1 is a schematic diagram showing the structure of a locking assembly according to an embodiment.

[0032] In the figure, the body device 10; the base assembly 11; the sliding groove 111; the transverse groove 1111; the longitudinal groove 1112; the oil inlet chamber 1113; the assembly boss 112; the fixing column 113; the guide block 114; the driving assembly 12; the locking assembly 20; the locking rod 21; the locking handle 22; the side shield 23; the pressing boss 231; the oil storage groove 232; the sliding guide groove 233; the locking groove 234; the sawing device 30; the chain guide plate 31; the chain guide groove 311; the guide groove 312; the positioning hole 313; the oil guide channel 314; the chain assembly 32; the chain guide tooth 321; the elastic bracket assembly 40; the sliding frame 41; the pushing boss 411; the guide boss 412; the oil guide hole 413; the support arm part 414; the cross bar part 415; the spring part 42; the guide rod 43; the sliding hole 44; the air avoidance groove 45. DETAILED DESCRIPTION

[0033] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0034] like Figures 1 to 4 As shown, the present invention provides a chain saw, which includes a body device 10, a sawing device 30 installed on the body device 10, and an oil supply assembly. The sawing device 30 includes a chain guide plate 31 and a chain assembly 32, and the oil supply assembly conveys lubricating oil to the chain assembly 32 to improve the smoothness of cutting of the sawing device 30.

[0035] The body device 10 includes a base assembly 11, a driving assembly 12 installed on the base assembly 11, an elastic bracket assembly 40 and a locking assembly 20, wherein at least a portion of the elastic bracket assembly 40 is slidably limited to the base assembly 11. The driving assembly 12 adopts an electric motor or an engine, and the driving assembly 12 is provided with a driving sprocket, and the chain assembly 32 is tensioned to match the driving sprocket. The driving sprocket rotates to drive the chain assembly 32 to move laterally along the chain guide plate 31, and the chain assembly 32 tensions the driving sprocket and the chain guide plate 31.

[0036] The chain guide plate 31 is similar to a long plate structure, and includes a long groove-shaped guide groove 312, at least one oil guide channel 314, and a chain guide groove 311 recessed from the side, and at least part of the chain assembly 32 extends into the chain guide groove 311. The chain assembly 32 protrudes toward one side of the chain guide groove 311 to form a chain guide tooth 321, and the chain guide tooth 321 is inserted into the chain guide groove 311. During the rotation of the chain assembly 32, it slides along the side of the chain guide plate 31, and the chain assembly 32 forms a circular motion between the chain guide plate 31 and the driving sprocket.

[0037] At least part of the chain guide groove 311 is connected to the oil guide channel 314, the oil supply assembly is connected to the oil guide channel 314, and the oil output by the oil supply assembly flows along the oil guide channel 314 to the chain guide groove 311. During the movement of the chain assembly 32, the chain assembly 32 passing through the intersection of the oil guide channel 314 and the chain guide groove 311 is easily soaked in lubricating oil, thereby forming an oil lubrication structure.

[0038] The elastic support assembly 40 is connected to the chain guide plate 31, and the elastic support assembly 40 applies an elastic preload force on the chain guide plate 31 in a direction away from the drive assembly 12, and the chain assembly 32 is tensioned to connect the drive assembly 12 and the chain guide plate 31. At least part of the elastic support assembly 40 slides on the base assembly 11, and the elastic support assembly 40 is provided with an elastic part to achieve elastic force output. The sliding direction of the chain guide plate 31 pushed by the elastic support assembly 40 constitutes automatic tensioning of the chain assembly 32. At least part of the base assembly 11 is inserted into the guide groove 312, and the insertion part of the base assembly 11 and the guide groove 312 cooperate to guide the directional movement of the chain guide plate 31. The locking assembly 20 and the base assembly 11 clamp and lock the two side surfaces of the chain guide plate 31, and the drive assembly 12 drives the chain assembly 32 to rotate.

[0039] The process of automatic tensioning of the chain assembly 32 is as follows: when the locking assembly 20 releases the lock on the chain guide 31, the elastic pre-tightening force of the elastic bracket assembly 40 drives the chain guide 31 to move, and the chain assembly 32 automatically tensions the chain guide 31 and the driving assembly 12, thereby realizing automatic repair of the tensioning force of the chain assembly 32. After that, the locking assembly 20 is locked, and the chain saw can be used. It is worth mentioning that the automatic tensioning process does not require the removal of the locking assembly 20, and can be automatically completed by simply loosening the clamping force on the chain guide 31, and the adjustment is quick and simple.

[0040] The chain guide plate 31 guides the tensioning direction of the chain assembly 32 through the guide groove 312 and the sliding direction of the elastic bracket assembly 40, and the tensioning effect is good. The sawing device 30 can be adjusted by adjusting the tension of the locking assembly 20, and the adjustment is convenient. The locking assembly 20 and the base assembly 11 clamp and lock the chain guide plate 31 to maintain the sawing position of the sawing device 30 and the tension of the chain assembly 32. The position of the chain guide plate 31 is fixed.

[0041] In one embodiment, the elastic support assembly 40 includes a sliding frame 41 and at least one spring member 42 elastically pushing the sliding frame 41, and the sliding frame 41 includes at least one partially protruding pushing boss 411. The sliding frame 41 is a rigid part, and the spring member 42 is an elastic part. The spring member 42 can push the sliding frame 41 to move, and the sliding frame 41 is used to connect the chain guide 31.

[0042] The base assembly 11 includes a concave sliding groove 111, the sliding frame 41 is slidably limited in the sliding groove 111 of the base assembly 11, and the chain guide plate 31 is attached to the peripheral plane of the opening of the sliding groove 111. The shape of the sliding frame 41 matches the shape of the sliding groove 111, and the groove wall of the sliding groove 111 limits the sliding frame 41 to guide the sliding direction of the sliding frame 41.

[0043] The push boss 411 is a columnar or block-shaped protrusion, and the chain guide 31 includes at least one positioning hole 313 that passes through. The end of the push boss 411 exceeds the opening of the sliding groove 111 and is plugged and connected with the positioning hole 313. The push boss 411 is inserted into the positioning hole 313, and the sliding frame 41 moves under the push of the spring member 42 and drives the chain guide 31 to slide synchronously. The chain assembly 32 is an annular structure, and there is a sliding space between the chain guide 31 and the driving sprocket. When the chain guide 31 moves toward the driving sprocket, the chain assembly 32 can be sleeved and installed in the chain guide 31 and the driving sprocket; or, the chain assembly 32 can be easily removed from the chain guide 31 and the driving sprocket.

[0044] The sliding frame 41 can be configured to be U-shaped, straight-shaped, medium-shaped, hollow rectangular or other sliding block structures, and the spring member 42 elastically abuts against the side of the sliding frame 41 .

[0045] In a preferred embodiment, the sliding frame 41 includes a crossbar portion 415 and arm portions 414 symmetrically distributed at both ends of the crossbar portion 415, and the push boss 411 partially protrudes from the arm portion 414. The sliding frame 41 is approximately a U-shaped structure, and the sliding groove 111 and the sliding frame 41 match each other. The sliding groove 111 includes a transverse groove 1111 and two longitudinal grooves 1112 parallel to and intersecting the transverse groove 1111, and the spring members 42 are installed in the two longitudinal grooves 1112.

[0046] The arm portion 414 slides in the longitudinal groove 1112, the cross bar portion 415 slides in the transverse groove 1111, and the spring member 42 abuts against the end of the arm portion 414. The spring member 42 pushes the cross bar portion 415 to move in the transverse groove 1111 from the two arm portions 414, and the transverse groove 1111 defines the maximum sliding range by the groove walls on both sides. The two longitudinal grooves 1112 are arranged at intervals to expand the support range and improve the stability of sliding.

[0047] In one embodiment, the sliding frame 41 includes a partially protruding guide boss 412, the guide boss 412 and the push boss 411 are arranged at intervals, and at least a portion of the guide boss 412 is inserted into the guide groove 312. The guide boss 412 is located in the guide groove 312, and the guide boss 412 can be manually pushed so that the sliding frame 41 compresses the spring member 42 to release the elastic support for the chain guide plate 31. The chain guide plate 31 can move toward the driving sprocket, which facilitates the disassembly and assembly of the chain assembly 32.

[0048] Further, the guide boss 412 extends beyond the chain guide plate 31 along the guide groove 312 and is inserted into the locking assembly 20. The locking assembly 20 is provided with a sliding guide groove 233 adapted to the guide boss 412, and the length direction of the sliding guide groove 233 is parallel to the direction of the guide groove 312 to locate the assembly position of the locking assembly 20.

[0049] In one embodiment, the base assembly 11 includes a partially protruding assembly boss 112, a fixed column 113 protruding from the assembly boss 112, and a guide block 114, the fixed column 113 and the guide block 114 are in the same straight line and inserted into the guide groove 312, and the sliding groove 111 is recessed from the surface of the assembly boss 112. The assembly boss 112 is a boss structure protruding from the base assembly 11, and the contact area and matching area between the chain guide 31 and the assembly boss 112 are highly controllable. The fixed column 113 and the guide block 114 are both located on the assembly boss 112, wherein the guide block 114 is inserted into the guide groove 312 as a protruding portion of the base assembly 11, and is used to guide the chain guide 31 to slide in a directional manner to prevent deflection. The fixed column 113 and the guide block 114 are arranged at intervals, and at least one of them can slide in cooperation with the guide groove 312. That is, the chain guide 31 is connected to the sliding frame 41 and then limited by the guide block 114 and / or the fixed column 113 to achieve the sliding path determination of the chain guide 31.

[0050] like Figures 2 to 5 As shown, the fixing column 113 is a fixing column 113-shaped structure, and the locking assembly 20 is connected to the fixing column 113 and presses the push-chain guide plate 31 to be close to the assembly boss 112. Optionally, the fixing column 113 is provided with a stud portion, and the locking assembly 20 is threadedly connected to the fixing column 113. As the threaded portion of the locking assembly 20 rotates, the push-chain guide plate 31 can be pressed. The locking assembly 20 and the assembly boss 112 clamp the assembly position of the fixed chain guide plate 31 through the pressing force, and the locking force is controllable.

[0051] In one embodiment, the locking assembly 20 includes a side shield 23 and a locking rod 21 rotatably connected to the side shield 23, the side shield 23 includes a protruding press-fit boss 231, the locking rod 21 passes through the press-fit boss 231 and the guide groove 312 and is threadedly connected to the base assembly 11, and the press-fit boss 231 presses against the chain guide 31. The locking rod 21 is installed on the side shield 23, and the side shield 23 provides support for the locking rod 21. The locking rod 21 is screwed to the fixing column 113 to push the press-fit boss 231 to press the chain guide 31.

[0052] The pressing boss 231 and the assembling boss 112 are clamped relatively on two side surfaces of the chain guide plate 31 , and the clamping force of the two is adjusted by rotating the locking rod 21 , which is convenient to adjust.

[0053] The side shield 23 is connected to the base assembly 11 and covers the connection area between the pressing boss 231 and the assembly boss 112. At the same time, the connection part between the chain assembly 32 and the drive assembly 12 is located in the covering area of ​​the side shield 23. The side shield 23 provides protection and can be quickly connected through the locking rod 21, so the assembly effect is good.

[0054] In one embodiment, part of the chain guide plate 31 is sealed and fitted with the assembly boss 112, and an oil inlet chamber 1113 is formed between the chain guide plate 31, the sliding groove 111 and the sliding frame 41, and the oil supply assembly is connected to the oil inlet chamber 1113. The oil supply assembly injects lubricating oil into the oil inlet chamber 1113, and the oil supply assembly can use an oil pump. The lubricating oil enters the oil inlet chamber 1113, the positioning hole 313 is connected to the oil inlet chamber 1113, and the oil guide channel 314 is connected from the positioning hole 313 to the chain guide groove 311. The peripheral areas of the openings at both ends of the positioning hole 313 are sealed, and the lubricating oil in the oil inlet chamber 1113 can only enter the oil guide channel 314 through the positioning hole 313.

[0055] In a preferred embodiment, the contact surface of the locking assembly 20 and the chain guide plate 31 forms a first sealing area, and the contact surface of the chain guide plate 31 and the base assembly 11 forms a second sealing area. The first sealing area and the second sealing area are respectively located on both sides of the chain guide plate 31, specifically, the pressing boss 231 and the assembly boss 112 abut against the contact surface of the chain guide plate 31 to form a sealing area at least partially.

[0056] The pressing boss 231 and the assembly boss 112 are pressed against and clamp the chain guide plate 31, and the sliding groove 111 is located on the assembly boss 112. The pressing boss 231 is pressed against the chain guide plate 31 and closes the opening and the surrounding area of ​​the sliding groove 111, so that the sliding groove 111 forms a sealed cavity structure, and accordingly, the positioning holes 313 are both located in the first sealing area and the second sealing area.

[0057] The oil guide channel 314 is provided on the chain guide plate 31 and provides lubricating oil to the chain assembly 32. Preferably, the sliding groove 111 is connected to the positioning hole 313 on the chain guide plate 31, and the oil guide channel 314 is connected from the positioning hole 313 to the chain guide groove 311. The oil supply assembly is connected to the sliding groove 111. When the oil supply assembly inputs oil into the sliding groove 111, the oil enters the oil guide channel 314 along the gap between the positioning hole 313 and the push boss 411, and then enters the chain guide groove 311 along the oil guide channel 314. Preferably, one oil guide channel 314 is provided, and one oil guide channel 314 is located on one side of the chain guide plate 31 to improve the strength of the chain guide plate 31. Preferably, two oil guide channels 314 are provided, distributed on two opposite sides of the chain guide plate 31, so that multi-point oil supply can be achieved and the lubrication effect can be improved.

[0058] In a preferred embodiment, the pressing boss 231 and the assembly boss 112 are pressed against the clamping chain guide 31, and the pressing boss 231 and the assembly boss 112 form a sealing area around the positioning hole 313. In the pressed state, the positioning hole 313 cannot communicate with the external area.

[0059] In one embodiment, at least part of the positioning holes 313 and the chain guide groove 311 intersect, and the intersection of the positioning holes 313 and the chain guide groove 311 forms an oil guide channel 314. Two positioning holes 313 are provided, and the two positioning holes 313 intersect with the chain guide grooves 311 on both sides of the chain guide plate 31 respectively. The sliding frame 41 is inserted into the positioning chain guide plate 31, and the push boss 411 is inserted into the positioning hole 313, and there is a flow gap between the push boss 411 and the positioning hole 313. The sliding frame 41 is located in the sliding groove 111, and an oil inlet chamber 1113 is formed between the chain guide plate 31, the sliding frame 41 and the sliding groove 111. The oil supply component fills the oil inlet chamber 1113 with lubricating oil, and the lubricating oil enters the oil guide channel 314 from the flow gap. Among them, the spring member 42 is located in the oil inlet chamber 1113.

[0060] Preferably, the sliding frame 41 includes an oil guide hole 413 extending from the top surface of the push boss 411 to the sliding groove 111. The lubricating oil enters the oil guide channel 314 from the oil guide hole 413, and the oil is supplied in a directional manner.

[0061] Preferably, the sliding frame 41 is provided with an oil guide notch extending from the end surface abutted by the spring member 42 to the abutting boss 411, so that the oil enters the positioning hole 313 and then enters the oil guide channel 314. Specifically, the arm portion 414 extends from the end portion toward the abutting boss 411.

[0062] In a preferred embodiment, the elastic support assembly 40 further includes a guide rod 43 connecting the two ends of the longitudinal groove 1112, and the sliding frame 41 is provided with a sliding hole 44, through which the guide rod 43 passes. The spring member 42 is sleeved on the guide rod 43, and the two ends abut against the sliding frame 41 and the groove wall of the sliding groove 111, respectively. Optionally, the aperture of the sliding hole 44 is greater than or equal to the outer diameter of the guide rod 43, and the outer peripheral wall of the guide rod 43 can be set as an optical axis or provided with a groove, and there is an oil space between the sliding hole 44 and the guide rod 43. The oil guide hole 413 of the push boss 411 intersects with the sliding hole 44 to form the output of the oil. Preferably, the sliding hole 44 is set as a stepped hole, and the oil guide hole 413 intersects with the large aperture part of the sliding hole 44.

[0063] Furthermore, the sliding frame 41 is provided with an air-avoiding groove 45 , the oil guide hole 413 intersects with the air-avoiding groove 45 , and the air-avoiding groove 45 is connected to the oil inlet chamber 1113 by a communication pipe.

[0064] In a preferred embodiment, a sealing ring is installed on the pressing boss 231 and / or the assembly boss 112. The sliding groove 111 is located in the surrounding area of ​​the elastic sealing ring to further improve the sealing effect.

[0065] In a preferred embodiment, the end surface of the pressing boss 231 is concave to form at least one oil storage groove 232, and the oil storage groove 232 faces the sliding groove 111 to improve the oil storage effect.

[0066] In the above embodiment, the two opposite side walls of the two arm portions 414 slide closely against the groove wall of the sliding longitudinal groove 1112, so that the clearance of the sliding frame 41 on the side facing the guide groove 312 is small, thereby reducing or preventing the lubricating oil from entering the guide groove 312. There is a clearance between the side wall of the arm portion 414 away from the guide groove 312 and the longitudinal groove 1112, so that the oil can be retained.

[0067] like Figures 2 to 6 As shown, the locking rod 21 spirally locks the pressing boss 231 and the assembly boss 112 to clamp the chain guide 31. After reaching the locking position, the locking assembly 20 also includes a locking handle 22 rotatably mounted on the locking rod 21, and the locking handle 22 is used to lock the position of the locking rod 21.

[0068] The side shield 23 is provided with a concave locking groove 234, the locking rod 21 can rotate to pass through the locking groove 234, and the locking handle 22 includes a handle posture of flipping out of the locking groove 234 and a locking posture of being fitted and confined in the locking groove 234. The groove space of the locking groove 234 is larger than the rotation space of the locking handle 22, and the connection end of the locking handle 22 and the locking rod 21 is at least partially located in the locking groove 234.

[0069] When the locking handle 22 rotates around the locking rod 21 and part of the locking handle 22 flips out of the locking groove 234, the locking handle 22 can drive the locking rod 21 to rotate, thereby improving the convenience of rotation of the locking rod 21. The action of the locking handle 22 driving the locking rod 21 includes two modes: unlocking and locking. When the locking handle 22 rotates around the locking rod 21 and the locking handle 22 flips into the locking groove 234, the locking handle 22 can be prevented from being subjected to force, thereby achieving locking of the locking rod 21. Preferably, part of the locking handle 22 fits against the bottom wall or side wall of the locking groove 234 to increase resistance.

[0070] In one embodiment, the locking assembly 20 includes a sliding guide groove 233 recessed from the press-fitting boss 231, and at least a portion of the elastic bracket assembly 40 is inserted into the sliding guide groove 233. The sliding guide groove 233 is a long groove structure, and the guide boss 412 is inserted into the sliding guide groove 233 to improve the sliding stability of the sliding frame 41. The height of the guide boss 412 is large to further improve the flexibility of the sliding frame 41 and improve the convenience of assembly.

[0071] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A chain saw, comprising a body device, a sawing device mounted on the body device, and an oil supply assembly, characterized in that: The body device comprises a base assembly, a driving assembly mounted on the base assembly, an elastic support assembly and a locking assembly, wherein at least a portion of the elastic support assembly is slidably restricted to the base assembly; The sawing device comprises a chain guide plate and a chain assembly, wherein the chain guide plate comprises a long groove-shaped guide groove, at least one oil guide channel and a chain guide groove recessed from a side edge, at least a portion of the chain assembly extends into the chain guide groove, at least a portion of the chain guide groove communicates with the oil guide channel, the oil supply assembly communicates with the oil guide channel, and the oil output by the oil supply assembly flows along the oil guide channel to the chain guide groove; The elastic bracket assembly is connected to the chain guide plate, the elastic bracket assembly applies an elastic pre-tightening force on the chain guide plate in a direction away from the driving assembly, and the chain assembly is tensioned to connect the driving assembly and the chain guide plate; At least part of the base assembly is inserted into the guide groove, the locking assembly and the base assembly clamp and lock the two side surfaces of the chain guide plate, and the driving assembly drives the chain assembly to rotate; The base assembly includes an inwardly concave sliding groove, the elastic support assembly includes a sliding frame that is slidably confined in the sliding groove, the chain guide plate includes at least one positioning hole that penetrates therethrough, an oil inlet chamber is formed between the chain guide plate, the sliding groove and the sliding frame, the oil supply assembly is connected to the oil inlet chamber, the positioning hole is connected to the oil inlet chamber, and the oil guide channel is connected from the positioning hole to the chain guide groove.

2. The chain saw according to claim 1, characterized in that The elastic support assembly includes at least one spring member elastically pushing the sliding frame, and the sliding frame includes at least one partially protruding pushing boss; The chain guide plate is fitted to the peripheral plane of the opening of the sliding groove; the end of the push boss exceeds the opening of the sliding groove and is plug-connected with the positioning hole accordingly.

3. The chain saw according to claim 2, characterized in that The sliding frame comprises a partially protruding guide boss, the guide boss and the push boss are arranged at intervals, and at least a portion of the guide boss is inserted into the guide groove.

4. The chain saw according to claim 2, characterized in that: The base assembly includes a partially protruding assembly boss, a fixing column protruding from the assembly boss, and a guide block, the fixing column and the guide block are in the same straight line and inserted into the guide groove, and the sliding groove is recessed from the surface of the assembly boss; The locking assembly is connected to the fixing column and presses and pushes the chain guide plate to fit tightly against the assembly boss.

5. The chain saw according to claim 4, characterized in that A portion of the chain guide is sealingly fitted to the assembly boss.

6. The chain saw according to claim 5, characterized in that The contact surface between the locking assembly and the chain guide plate forms a first sealing area, and the contact surface between the chain guide plate and the base assembly forms a second sealing area; The oil supply assembly is communicated with the sliding groove, and the positioning holes are both located in the first sealing area and the second sealing area.

7. The chain saw according to claim 5, characterized in that At least a portion of the positioning hole and the chain guide groove intersect, and the intersection of the positioning hole and the chain guide groove forms the oil guide channel.

8. The chain saw according to claim 1, characterized in that The locking assembly includes a side shield and a locking rod rotatably connected to the side shield, the side shield includes a protruding press-fit boss, the locking rod passes through the press-fit boss and the guide groove and is threadedly connected to the base assembly, and the press-fit boss presses and abuts against the chain guide plate.

9. The chain saw according to claim 8, characterized in that The locking assembly also includes a locking handle rotatably mounted on the locking rod, the side shield is provided with a concave locking groove, the locking rod can be rotatably passed through the locking groove, and the locking handle includes a handle posture of flipping out of the locking groove and a locking posture of being fitted and confined in the locking groove.

10. The chain saw according to claim 8, characterized in that The locking assembly comprises a sliding guide groove recessed from the pressing boss, the length direction of the sliding guide groove is parallel to the direction of the guide groove, and at least a portion of the elastic bracket assembly is inserted into the sliding guide groove.

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