Chain saw

Abstract

The chain saw comprises a machine body and a chain fixing plate installed on the machine body, a positioning block is arranged on the machine body, a first matching groove allowing the positioning block to penetrate through is formed in the chain fixing plate, an installation groove is formed in the positioning block, a first lead screw is rotationally connected to the machine body, the first lead screw extends into the installation groove, and a second lead screw is arranged on the machine body. A first control mechanism is arranged on the machine body; a mounting groove is formed in the positioning block, a first pressing block is slidably connected into the mounting groove, the first pressing block is in threaded connection to the first lead screw, first inclined planes are formed in the opposite side walls of the two sides of the positioning block, first sliding grooves are formed in the opposite side walls of the two sides of the first pressing block, and second pressing blocks are slidably connected into the two first sliding grooves; the ends, away from each other, of the two second pressing blocks extend out of the first pressing block and are attached to the adjacent first inclined faces. The abutting structure is arranged to replace a traditional bolt structure, rapid mounting and dismounting of the chain fixing plate are achieved through mechanical linkage, and connecting parts are prevented from being lost.

Description

Technical Field

[0001] The invention relates to the field of cutting equipment, in particular to a chain saw. Background Art

[0002] A chainsaw, also known as an oil saw, is a portable cutting tool powered by a gasoline engine, mainly used for logging and timber making.

[0003] The cutting chain of the chain saw is mounted on the chain plate and connected to the chain saw sprocket. The conventional chain plate is mounted on the main body of the chain saw by bolts. After the chain saw is used, the chain plate needs to be removed from the chain saw and oiled for maintenance to prevent the chain from rusting and wearing. When removing the chain plate, the bolts used to fix it need to be unscrewed to remove the chain plate from the chain saw. However, the removed bolts are easy to lose, so there are no bolts available when installing the chain plate. Summary of the invention

[0004] The present application provides a chainsaw, which is provided with a pressing structure to replace a traditional bolt structure, and realizes rapid installation and disassembly of a fixed chain plate through mechanical linkage, thereby avoiding loss of connecting parts.

[0005] The present application provides a chain saw adopting the following technical solution: A chain saw, comprising a body, a fixed chain plate installed on the body, the body is provided with a positioning block, the fixed chain plate is provided with a first matching groove for the positioning block to pass through, the positioning block is provided with a mounting groove, the body is rotatably connected with a first screw rod, the first screw rod extends into the mounting groove, and the body is provided with a first control mechanism for controlling the rotation of the first screw rod; a first pressure block is slidably connected in the mounting groove, the first pressure block is threadedly connected to the first screw rod, and the movement of the first pressure block is controlled by rotating the first screw rod; first inclined surfaces are provided on the opposite side walls of the positioning block on both sides, and the inclination angles of the two first inclined surfaces are opposite; first sliding grooves are provided on the opposite side walls of the first pressure block on both sides, and second pressure blocks are slidably connected in the two first sliding grooves, and the ends of the two second pressure blocks away from each other extend out of the first pressure block and fit with the adjacent first inclined surface, and the first inclined surface is used to convert the force of the first pressure block moving toward the body into the force of the second pressure block moving away from the first pressure block; in the initial state, the two first pressure blocks can pass through the first matching groove.

[0006] By adopting the above technical solution, the first control mechanism controls the first screw rod to rotate forward to drive the first pressure block to move closer to the machine body. When the first pressure block moves closer to the machine body, it will bring the two second pressure blocks together to move closer to the machine body. When the two second pressure blocks move closer to the machine body, under the guidance of the two first inclined surfaces, the two second pressure blocks will move away from the first pressure block. Finally, the first pressure block presses the two second pressure blocks against the fixed chain plate, and the two second pressure blocks press the fixed chain plate against the machine body to complete the fixation of the fixed chain plate. When the fixed chain plate is disassembled, the first control mechanism controls the first screw rod to reverse so that the first pressure block moves away from the machine body, canceling the pressure of the second pressure block on the fixed chain plate. After the first pressure block stops moving, the two second pressure blocks can be pushed back into the two first slide grooves, so that the two second pressure blocks can fit with the two first inclined surfaces again, and the fixed chain plate can be disassembled from the machine body.

[0007] Preferably, a spring is provided in the first slide groove, one end of the spring is connected to the second pressure block, and the other end of the spring is connected to the side wall of the first slide groove away from the second pressure block, and the spring is stretched when the second pressure block moves away from the first pressure block.

[0008] By adopting the above technical solution, when the first pressing block moves away from the machine body, the two springs will drive the two second pressing blocks to move into the two first sliding grooves, so that the two second pressing blocks are automatically reset without manual reset.

[0009] Preferably, the first control mechanism includes a first bevel tooth sleeved on the first screw rod, a first rotating rod rotatably connected to the machine body, a second bevel tooth sleeved on the first rotating rod and meshing with the first bevel tooth, a first matching portion provided on the first rotating rod, a control rod rotatably and slidably connected to the machine body, and a second matching portion provided on the control rod for connecting to the first matching portion, wherein the second matching portion is connected to the first matching portion during the movement of the control rod so that the first rotating rod can be driven to rotate when the control rod rotates.

[0010] By adopting the above technical solution, the chainsaw operator first pushes the control lever to connect the first matching part and the second matching part, and then the chainsaw operator rotates the control lever to drive the first rotating rod to rotate. The rotation of the first rotating rod can drive the first screw rod to rotate through the cooperation of the second bevel teeth and the first bevel teeth.

[0011] Preferably, the first matching portion includes a first through-hole formed on the end face of the first rotating rod and a second through-hole formed on the bottom wall of the first through-hole for the control rod to extend into, and the first through-hole and the second through-hole are both located on the movement path of the control rod; the second matching portion includes two first connecting rods, two first friction blocks slidably connected to the two first connecting rods, second inclined surfaces formed on the first friction blocks, and a first wedge block provided on the control rod, the two first connecting rods are respectively located on both sides of the control rod, the two first friction blocks are sleeved on the control rod, the first wedge block extends between the two second inclined surfaces, and during the process of the control rod moving into the second through-hole, the first wedge block moves until it is in contact with the two second inclined surfaces and presses the two first friction blocks against the side walls of the first through-hole, thereby realizing the connection between the control rod and the first rotating rod.

[0012] By adopting the above technical solution, when the first rotating rod is driven to rotate, the chain saw operator pushes the control rod into the machine body with force so that the control rod moves toward the first through hole. When the control rod enters the first through hole, the first wedge block moves to fit with the two second inclined surfaces so that the two first friction blocks follow the control rod and move into the first through hole. Finally, the two first friction blocks move to conflict with the bottom wall of the first through hole. The subsequent control rod continues to move into the second through hole and moves with the first wedge block. During the movement of the first wedge block, the two first friction blocks are pressed against the side wall of the first through hole through the two second inclined surfaces. Then the control rod is rotated. When the control rod rotates, the two first friction blocks are driven to rotate through the first wedge block. When the two first friction blocks rotate, the first rotating rod is driven to rotate through friction force, so that the power of the control rod rotating to the first rotating rod is transmitted. The above structure can only move the first rotating rod by rotating the control rod when the chain saw operator intentionally pushes the control rod so that the two first friction blocks are in close contact with the side wall of the first through hole. Normally, when the chainsaw technician or external objects such as branches collide with the control rod and cause the control rod to rotate, the control rod will only rotate idly without affecting the first rotating rod and the first screw rod, thereby ensuring the stability of the second pressure block fixing the fixed chain plate.

[0013] Preferably, one end of the control rod away from the first rotating rod extends out of the machine body and is hinged with a T-shaped rod, and a buckle that is engaged with the T-shaped rod is provided on the outer wall of the machine body.

[0014] By adopting the above technical solution, a T-shaped rod is provided to facilitate the rotation of the control rod. When the T-shaped rod is not in use, the T-shaped rod can be buckled onto the buckle, which has the effect of limiting the rotation of the control rod. At the same time, the total volume of the machine body is also reduced, making it convenient for the chain saw operator to cut down trees with the chain saw.

[0015] Preferably, a sliding groove is provided on the machine body, an adjustment block slides in the sliding groove, the adjustment block extends out of the sliding groove, a second matching groove for the adjustment block to pass through is provided on the fixed chain plate, a second screw rod is rotatably connected in the sliding groove, the adjustment block is threadedly connected to the second screw rod, and a second control mechanism for controlling the rotation of the second screw rod is provided on the machine body.

[0016] By adopting the above technical solution, when the chain fixing plate is installed on the machine body, the adjustment block is inserted into the second matching groove, and then the saw chain is installed on the chain fixing plate. Then, the second control mechanism is used to control the rotation of the second screw rod, and the rotation of the second screw rod drives the adjustment block to slide in the sliding groove and adjust the position of the chain fixing plate, thereby adjusting the tightness of the saw chain.

[0017] Preferably, the second control mechanism includes a third bevel tooth provided on the second screw rod, a second rotating rod rotatably connected to the machine body, a fourth bevel tooth provided on the second rotating rod and meshing with the third bevel tooth, a third matching portion provided on the second rotating rod, and a fourth matching portion provided on the control rod for connecting the third matching portion, wherein the fourth matching portion is connected to the third matching portion during the movement of the control rod so that the second rotating rod is driven to rotate when the control rod rotates.

[0018] By adopting the above technical solution, the third matching part and the fourth matching part can be matched by sliding the control rod to achieve the second rotating rod to rotate when the control rod rotates. The rotation of the second rotating rod can drive the second screw rod to rotate through the matching of the third bevel gear and the fourth bevel gear.

[0019] Preferably, the third matching portion includes a third through-hole provided on the second rotating rod, the third through-hole is opposite to the first through-hole, the control rod passes through the second rotating rod and extends out of the second rotating rod through the third through-hole; the fourth matching portion includes two second connecting rods, two second friction blocks slidably connected to the two second connecting rods, a third inclined surface provided on the second friction block, and a second wedge block provided on the control rod, the two second connecting rods are respectively located on both sides of the control rod, the two second friction blocks are sleeved on the outside of the control rod, the second wedge block extends between the two third inclined surfaces, the distance between the second friction block and the first friction block is smaller than the distance between the first through-hole and the third through-hole, and when the control rod moves away from the machine body, the second wedge block moves to fit the two third inclined surfaces and presses the two second friction blocks against the side wall of the third through-hole.

[0020] By adopting the above technical solution, when the two first friction blocks move into the first through-hole, the two second friction blocks are located outside the third through-hole, and when the two second friction blocks move into the third through-hole, the two first friction blocks are located outside the first through-hole. To drive the first rotating rod to rotate, the chain saw operator pulls the control rod out of the machine body with force. During the movement of the control rod, the two second friction blocks will enter the third through-hole with the two second friction blocks and finally collide with the bottom wall of the third through-hole. The subsequent control rod continues to move out of the machine body and moves with the second wedge block. During the movement of the second wedge block, the two second friction blocks will be pressed against the side wall of the third through-hole. Then the control rod is rotated. When the control rod rotates, the two second friction blocks will be driven to rotate through the second wedge block. When the two second friction blocks rotate, the second rotating rod will be driven to rotate through friction force, thereby realizing the control of the rotation of the second rotating rod. The above structure can complete the connection locking and unlocking of the control rod with the first rotating rod and the second rotating rod by pushing in and pulling out the control rod, and can realize the control of the movement of the first pressing block and the adjusting block.

[0021] The technical effects of the present invention are mainly reflected in the following aspects: 1. The present invention sets a pressing structure to replace the traditional bolt structure, and realizes the rapid installation and removal of the fixed chain plate through mechanical linkage to avoid the loss of connecting parts; 2. The present invention can adjust and fix the position of the fixed chain plate through a simple structure; 3. The present invention can complete the connection locking and unlocking of the control rod with the first rotating rod and the second rotating rod by pushing in and pulling out the control rod, and the sliding of the first pressing block and the adjusting block can be achieved by one rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the chain saw of the present application.

[0023] Figure 2 yes Figure 1 Schematic diagram of the structure of the oil saw components and the fixed chain plate.

[0024] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0025] Figure 4 hour Figure 2 Cross-sectional view of the oil saw components and the chain plate along line BB.

[0026] Figure 5 yes Figure 4 A partial enlarged view of point C in the middle.

[0027] Figure 6 yes Figure 4 A partial enlarged view of point D in the middle.

[0028] Figure 7 yes Figure 4 Structural schematic diagram of the middle control rod, T-shaped rod, second matching portion, and fourth matching portion.

[0029] Figure 8 yes Figure 4 A schematic structural diagram of the middle control rod, T-shaped rod, second matching portion, and fourth matching portion from another angle.

[0030] Fig. 9 yes Figure 7 A partial enlarged view of point E in the middle.

[0031] Fig.10 It is a structural diagram of the components of a chainsaw.

[0032] Fig.11 yes Fig.10 A partial enlarged view of point F in the middle.

[0033] Figure numerals: 1, body; 11, first screw rod; 12, T-bar; 13, buckle; 14, sliding groove; 15, adjustment block; 16, second screw rod; 2, fixed chain plate; 21, first matching groove; 22, second matching groove; 3, positioning block; 31, mounting groove; 32, first inclined surface; 4, first control mechanism; 41, first bevel gear; 42, first rotating rod; 43, second bevel gear; 44, first matching portion; 441, first through hole; 442, second through hole; 45, control rod; 46, second Matching part; 461, first connecting rod; 462, first friction block; 463, second inclined surface; 464, first wedge block; 5, first pressure block; 51, first slide groove; 52, second pressure block; 53, spring; 6, second control mechanism; 61, third bevel tooth; 62, second rotating rod; 63, fourth bevel tooth; 64, third matching part; 641, third through hole; 65, fourth matching part; 651, second connecting rod; 652, second friction block; 653, third inclined surface; 654, second wedge block. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings to make the technical solution of the present application easier to understand and grasp.

[0035] Reference Figure 1-Figure 3 A chain saw of this embodiment includes a body 1 and a chain plate 2 mounted on the body 1. A positioning block 3 is integrally formed on the body 1, and first inclined surfaces 32 are provided on opposite side walls of the positioning block 3, and the two first inclined surfaces 32 have opposite inclination angles. A first matching groove 21 for the positioning block 3 to pass through is provided on the chain plate 2, and when the positioning block 3 is inserted into the first matching groove 21, the chain plate 2 can slide relative to the positioning block 3 along the Y-axis direction.

[0036] Reference Figure 2-Figure 5The positioning block 3 is provided with a mounting groove 31, and the body 1 is rotatably connected with a first screw rod 11, the rotation axis of the first screw rod 11 is parallel to the Z axis, and the top end of the first screw rod 11 extends into the mounting groove 31. The mounting groove 31 is slidably connected with a first pressing block 5 along the Z axis direction, and the first pressing block 5 is threadedly connected to the first screw rod 11, and the movement of the first pressing block 5 is controlled by rotating the first screw rod 11.

[0037] Reference Figure 2-Figure 5 , first slide grooves 51 are provided on the opposite side walls of the first pressure block 5, and second pressure blocks 52 are connected in the two first slide grooves 51 in a sliding manner along the X-axis direction. The ends of the two second pressure blocks 52 that are away from each other extend out of the first pressure block 5 and fit with the adjacent first inclined surface 32. The first inclined surface 32 is used to convert the force of the first pressure block 5 moving in the direction of the machine body 1 into the force of the second pressure block 52 moving away from the first pressure block 5; in the initial state, the two first pressure blocks 5 can pass through the first matching groove 21. Springs 53 are provided in the two first slide grooves 51, one end of the spring 53 is fixedly connected to the second pressure block 52, and the other end of the spring 53 is connected to the side wall of the first slide groove 51 away from the second pressure block 52. When the second pressure block 52 moves away from the first pressure block 5, the spring 53 is stretched by force.

[0038] Reference Figure 2 , Figure 4 and Figure 6 The machine body 1 is provided with a first control mechanism 4 for controlling the rotation of the first screw rod 11. The first control mechanism 4 includes a first bevel gear 41 sleeved on the bottom end of the first screw rod 11, a first rotating rod 42 rotatably connected to the machine body 1, and a second bevel gear 43 sleeved on the first rotating rod 42 and meshing with the first bevel gear 41. The axis of the first rotating rod 42 is parallel to the X-axis.

[0039] Reference Figure 2 , Figure 4 and Figure 6 The first control mechanism 4 further includes a first matching portion 44 provided on the first rotating rod 42, a control rod 45 rotatably and slidably connected to the body 1, and a second matching portion 46 provided on the control rod 45 for connecting to the first matching portion 44. The second matching portion 46 is connected to the first matching portion 44 during the movement of the control rod 45 so that the control rod 45 can drive the first rotating rod 42 to rotate when the control rod 45 rotates. The axis of the control rod 45 coincides with the axis of the first rotating rod 42. One end of the control rod 45 away from the first rotating rod 42 extends out of the body 1 and is hinged to a T-shaped rod 12. A buckle 13 that is engaged with the T-shaped rod 12 is provided on the outer wall of the body 1.

[0040] Reference Figure 2 , Figure 4 and Figure 6The first matching portion 44 includes a first through hole 441 opened on the end surface of the first rotating rod 42, and a second through hole 442 opened on the bottom wall of the first through hole 441 for the control rod 45 to extend into. The first through hole 441 is larger than the control rod 45 and the second through hole 442. The second through hole 442 is only the first through hole 441 and the second through hole 442 are both located on the movement path of the control rod 45.

[0041] Reference Figure 2 , Figure 4 , Figure 6-Figure 9 The second matching portion 46 includes four first connecting rods 461, two first friction blocks 462 slidingly connected to the four first connecting rods 461, two second inclined surfaces 463 opened on the first friction blocks 462, and two first wedge blocks 464 symmetrically fixed on the control rod 45. The four first connecting rods 461 are respectively located on both sides of the control rod 45 in pairs, and the two first friction blocks 462 are sleeved on the control rod 45. The two first friction blocks 462 can only enter the second through hole 442, and cannot enter the first through hole 441. The two second inclined surfaces 463 on the same first friction block 462 are symmetrically arranged, and the second inclined surfaces 463 on the two first friction blocks 462 are also symmetrically arranged with respect to each other. The two first wedge blocks 464 respectively extend between the two second inclined surfaces 463 on the same side. When the first control rod 45 moves into the second through-hole 442, the first wedge block 464 moves to fit with the two second inclined surfaces 463 on the same side and presses the two first friction blocks 462 against the side wall of the first through-hole 441.

[0042] Reference Figure 2 , Figure 3 , Figure 6 , Fig.10 and Fig.11 The machine body 1 is provided with a sliding groove 14, in which an adjusting block 15 slides along the Y-axis direction, and the adjusting block 15 extends out of the sliding groove 14. The fixed chain plate 2 is provided with a second matching groove 22 for the adjusting block 15 to pass through, and a second screw rod 16 is rotatably connected in the sliding groove 14, and the axis of the second screw rod 16 is parallel to the Y-axis. The adjusting block 15 is threadedly connected to the second screw rod 16, and the machine body 1 is provided with a second control mechanism 6 for controlling the rotation of the second screw rod 16.

[0043] Reference Figure 2 , Figure 4 , Figure 6 , Fig.10 and Fig.11The second control mechanism 6 includes a third bevel tooth 61 sleeved on the second screw rod 16, a second rotating rod 62 rotatably connected to the body 1, a fourth bevel tooth 63 provided on the second rotating rod 62 and meshing with the third bevel tooth 61, a third matching portion 64 provided on the second rotating rod 62, and a fourth matching portion 65 provided on the control rod 45 for connecting the third matching portion 64. The fourth matching portion 65 is connected to the third matching portion 64 during the movement of the control rod 45 so that the second rotating rod 62 is driven to rotate when the control rod 45 rotates.

[0044] Reference Figure 2 , Figure 4 , Figure 6 The third matching portion 64 includes a third through hole 641 formed on the second rotating rod 62, the third through hole 641 is opposite to the first through hole 441, and the control rod 45 passes through the second rotating rod 62 and extends out of the second rotating rod 62 through the third through hole 641. The axis of the second rotating rod 62 coincides with the axis of the first rotating rod 42.

[0045] Reference Figure 2 , Figure 4 , Figure 6-Figure 8 The fourth matching portion 65 includes four second connecting rods 651, two second friction blocks 652 slidably connected to the four second connecting rods 651, two third inclined surfaces 653 provided on the second friction blocks 652, and two second wedge blocks 654 symmetrically fixed to the control rod 45. The two third inclined surfaces 653 on the same second friction block 652 are symmetrically arranged, and the third inclined surfaces 653 on the two second friction blocks 652 are also symmetrically arranged with respect to each other, and the two second wedge blocks 654 extend respectively between the two third inclined surfaces 653 on the same side.

[0046] Reference Figure 2 , Figure 4 , Figure 6-Figure 8 , the distance between the second friction block 652 and the first friction block 462 is smaller than the distance between the first through hole 441 and the third through hole 641. When the two first friction blocks 462 move into the first through hole 441, the two second friction blocks 652 are located outside the third through hole 641. When the two second friction blocks 652 move into the third through hole 641, the two first friction blocks 462 are located outside the first through hole 441. When the control rod 45 moves away from the body 1, the second wedge block 654 moves to fit with the two third inclined surfaces 653 and presses the two second friction blocks 652 against the side wall of the third through hole 641.

[0047] Reference Figure 2-Figure 10 The specific disassembly and assembly steps of the fixed chain plate 2 of the chain saw of the present application are as follows: When the chain fixing plate 2 needs to be installed, the chain fixing plate 2 is first placed on the machine body 1 and the positioning block 3 is passed through the first matching groove 21 and the adjusting block 15 is passed through the second matching groove 22, and then the saw chain is installed on the chain fixing plate 2. Then the chain saw operator releases the matching between the T-bar 12 and the buckle 13 and forcibly pulls the control rod 45 out of the machine body 1. During the movement of the control rod 45 being pulled out of the machine body 1, the two second friction blocks 652 are brought into the third through-hole 641 and finally collide with the bottom wall of the third through-hole 641. Subsequently, the control rod 45 continues to move out of the machine body 1 and moves with the two second wedge blocks 654. During the movement of the two second wedge blocks 654, the two second friction blocks 652 are pressed against the side walls of the third through-hole 641 through the four third inclined surfaces 653.

[0048] Then, the control rod 45 is rotated. When the control rod 45 rotates, the two second friction blocks 652 are driven to rotate through the second wedge block 654. When the two second friction blocks 652 rotate, the second rotating rod 62 is driven to rotate through friction. The rotation of the second rotating rod 62 can drive the second screw rod 16 to rotate through the cooperation of the third bevel gear 61 and the fourth bevel gear 63. The rotation of the second screw rod 16 controls the sliding of the adjustment block 15. The sliding of the adjustment block 15 causes the chain fixing plate 2 to slide along the Y-axis direction, thereby adjusting the tightness of the saw chain.

[0049] After the position of the chain plate 2 is adjusted, the chain saw operator pushes the control rod 45 into the machine body 1 to move the control rod 45 toward the first through hole 441. During the movement of the control rod 45 toward the first through hole 441, the second wedge block 654 will move out of the third through hole 641 with the two second friction blocks 652, releasing the connection between the control rod 45 and the second rotating rod 62.

[0050] When the control rod 45 enters the first through hole 441, the first wedge block 464 moves to fit with the two second inclined surfaces 463, so that the two first friction blocks 462 follow the control rod 45 and move into the first through hole 441. Finally, the two first friction blocks 462 move to contact with the bottom wall of the first through hole 441. The control rod 45 then continues to move into the second through hole 442 and moves with the two first wedge blocks 464. During the movement of the two first wedge blocks 464, the two first friction blocks 462 are pressed against the side wall of the first through hole 441 through the four second inclined surfaces 463.

[0051] Then, the control rod 45 is rotated. When the control rod 45 rotates, the two first friction blocks 462 are driven to rotate through the first wedge block 464. When the two first friction blocks 462 rotate, the first rotating rod 42 is driven to rotate through friction. When the first rotating rod 42 rotates, the first screw 11 is driven to rotate through the cooperation of the first bevel gear 41 and the second bevel gear 43. The rotation of the first screw 11 drives the first pressing block 5 to slide close to the machine body 1. When the first pressing block 5 moves close to the machine body 1, it will bring the two second pressing blocks 52 together to move close to the machine body 1. When the two second pressing blocks 52 move close to the machine body 1, the two second pressing blocks 52 will move away from the first pressing block 5 under the guidance of the two first inclined surfaces 32. When the second pressing block 52 moves away from the first pressing block 5, the spring 53 is stretched. Finally, the first pressing block 5 presses the two second pressing blocks 52 against the fixed chain plate 2, and the two second pressing blocks 52 press the fixed chain plate 2 against the machine body 1, completing the fixing of the fixed chain plate 2.

[0052] After the chain plate 2 is fixed, the chainsaw operator pulls out the control rod 45, so that the control rod 45 moves out of the first through hole 441 with the two first friction blocks 462 and the first wedge block 464, and finally moves the two first friction blocks 462, the first wedge block 464, the two second friction blocks 652, and the second wedge block 654 to between the first rotating rod 42 and the second rotating rod 62, and then rotates the T-bar 12 so that the T-bar 12 is buckled onto the buckle 13, thereby completing the storage and fixation of the T-bar 12.

[0053] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A chain saw, comprising a body (1) and a chain plate (2) mounted on the body (1), characterized in that: The machine body (1) is provided with a positioning block (3); the chain fixing plate (2) is provided with a first matching groove (21) for the positioning block (3) to pass through; the positioning block (3) is provided with a mounting groove (31); the machine body (1) is rotatably connected with a first screw rod (11), the first screw rod (11) extends into the mounting groove (31); the machine body (1) is provided with a first control mechanism (4) for controlling the rotation of the first screw rod (11); a first pressure block (5) is slidably connected in the mounting groove (31), the first pressure block (5) is threadedly connected to the first screw rod (11), and the first pressure block (5) is controlled by rotating the first screw rod (11). 5); first inclined surfaces (32) are provided on opposite side walls of the positioning block (3), and the inclination angles of the two first inclined surfaces (32) are opposite; first sliding grooves (51) are provided on opposite side walls of the first pressing block (5), and second pressing blocks (52) are slidably connected in the two first sliding grooves (51), and the ends of the two second pressing blocks (52) that are away from each other extend out of the first pressing block (5) and fit with the adjacent first inclined surfaces (32), and the first inclined surfaces (32) are used to convert the force of the first pressing block (5) moving toward the machine body (1) into the force of the second pressing block (52) moving away from the first pressing block (5); In the initial state, the two first pressing blocks (5) can pass through the first matching grooves (21).

2. A chainsaw according to claim 1, characterized in that: A spring (53) is provided in the first sliding groove (51), one end of the spring (53) is connected to the second pressing block (52), and the other end of the spring (53) is connected to the side wall of the first sliding groove (51) away from the second pressing block (52), and when the second pressing block (52) moves away from the first pressing block (5), the spring (53) is stretched by force.

3. A chainsaw according to claim 1, characterized in that: The first control mechanism (4) comprises a first bevel tooth (41) sleeved on the first screw rod (11), a first rotating rod (42) rotatably connected to the machine body (1), a second bevel tooth (43) sleeved on the first rotating rod (42) and meshing with the first bevel tooth (41), a first matching portion (44) provided on the first rotating rod (42), a control rod (45) rotatably and slidably connected to the machine body (1), and a second matching portion (46) provided on the control rod (45) and used to connect to the first matching portion (44), wherein the second matching portion (46) is connected to the first matching portion (44) during the movement of the control rod (45) so that the first rotating rod (42) can be driven to rotate when the control rod (45) rotates.

4. A chainsaw according to claim 3, characterized in that: The first matching portion (44) comprises a first through hole (441) formed on the end surface of the first rotating rod (42), and a second through hole (442) formed on the bottom wall of the first through hole (441) for the control rod (45) to extend therethrough, wherein the first through hole (441) and the second through hole (442) are both located on the moving path of the control rod (45); the second matching portion (46) comprises two first connecting rods (461), two first friction blocks (462) slidably connected to the two first connecting rods (461), a second inclined surface (463) formed on the first friction block (462), and a second inclined surface (464) formed on the control rod (45). The first wedge block (464) on the control rod (45), the two first connecting rods (461) are respectively located on both sides of the control rod (45), the two first friction blocks (462) are sleeved on the control rod (45), the first wedge block (464) extends between the two second inclined surfaces (463), and when the control rod (45) moves into the second through hole (442), the first wedge block (464) moves to fit with the two second inclined surfaces (463) and presses the two first friction blocks (462) against the side wall of the first through hole (441), thereby realizing the connection between the control rod (45) and the first rotating rod (42).

5. The chain saw according to claim 3, characterized in that: One end of the control rod (45) away from the first rotating rod (42) extends out of the machine body (1) and is hingedly connected to a T-shaped rod (12); a buckle (13) that is snap-fitted with the T-shaped rod (12) is provided on the outer wall of the machine body (1).

6. A chainsaw according to claim 4, characterized in that: The machine body (1) is provided with a sliding groove (14), an adjusting block (15) is slidably arranged in the sliding groove (14), the adjusting block (15) extends out of the sliding groove (14), a second matching groove (22) is provided on the fixed chain plate (2) for the adjusting block (15) to pass through, a second screw rod (16) is rotatably connected in the sliding groove (14), the adjusting block (15) is threadedly connected to the second screw rod (16), and a second control mechanism (6) for controlling the rotation of the second screw rod (16) is provided on the machine body (1).

7. A chainsaw according to claim 6, characterized in that: The second control mechanism (6) comprises a third bevel tooth (61) provided on the second screw rod (16), a second rotating rod (62) rotatably connected to the machine body (1), a fourth bevel tooth (63) provided on the second rotating rod (62) and meshing with the third bevel tooth (61), a third matching portion (64) provided on the second rotating rod (62), and a fourth matching portion (65) provided on the control rod (45) and used for connecting with the third matching portion (64); the fourth matching portion (65) is connected with the third matching portion (64) during the movement of the control rod (45), so that when the control rod (45) rotates, the second rotating rod (62) is driven to rotate.

8. A chainsaw according to claim 7, characterized in that: The third matching portion (64) includes a third through hole (641) formed on the second rotating rod (62), the third through hole (641) is opposite to the first through hole (441), the control rod (45) passes through the second rotating rod (62) and extends out of the second rotating rod (62) through the third through hole (641); the fourth matching portion (65) includes two second connecting rods (651), two second friction blocks (652) slidably connected to the two second connecting rods (651), a third inclined surface (653) formed on the second friction block (652), a second wedge block (654) provided on the control rod (45), and the two second connecting rods (651). The connecting rod (651) is respectively located on both sides of the control rod (45), the two second friction blocks (652) are sleeved on the outside of the control rod (45), the second wedge block (654) extends between the two third inclined surfaces (653), the distance between the second friction block (652) and the first friction block (462) is smaller than the distance between the first through hole (441) and the third through hole (641), and when the control rod (45) moves away from the body (1), the second wedge block (654) moves to fit with the two third inclined surfaces (653) and presses the two second friction blocks (652) against the side walls of the third through hole (641).

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