miter saw

Abstract

The application discloses a miter saw, comprising: a base; a workbench rotating relative to the base with a miter axis as the axis; a first operating part providing locking force through a first transmission assembly driving a locking mechanism; the first operating part comprising: a first position corresponding to locking the relative rotation of the base and the workbench and a second position corresponding to releasing the relative rotation of the base and the workbench; a second operating part located within the range that can be simultaneously operated by one hand with the first operating part; a positioning mechanism driven by a second transmission assembly to release the restriction between the workbench and the base at a preset position; the second operating part relative to the first operating part comprising: a third position corresponding to restricting the workbench and the base at the preset position and a fourth position corresponding to releasing the restriction of the positioning mechanism on the workbench and the base. The miter saw of the application is simple and convenient to operate.

Description

Technical Field

[0001] This application relates to a power tool, specifically a miter saw. Background Technology

[0002] A miter saw is a type of table-type tool capable of cutting at a certain angle. It typically includes a rotating cutting system and a rotating worktable. Both rotation and turning actions require control. However, current technology suffers from several drawbacks. First, the control of rotation and turning is not precise enough, affecting the saw's accuracy. Second, existing control structures are complex and cumbersome to use, impacting user experience and reducing work efficiency.

[0003] Therefore, improving the speed and accuracy of existing oblique saw operations has become a pressing technical problem that needs to be solved in this field. Summary of the Invention

[0004] The purpose of this application is to provide a power tool, a convenient and quick-to-operate, highly efficient, and multifunctional miter saw.

[0005] To achieve the above objectives, this application adopts the following technical solution: A beveling saw includes: a base; a worktable for placing a workpiece and rotating relative to the base about a beveling axis; a cutting mechanism for performing a cutting operation on the workpiece; a locking mechanism for providing a locking force to lock the relative rotation of the base and the worktable; a positioning mechanism for providing multiple preset positions and selectively restricting the worktable relative to the base at a selected preset position; and further includes: an operating mechanism for gripping and operating to rotate the worktable relative to the base; comprising: a first operating part that drives the locking mechanism to provide the locking force via a first transmission component; the first operating part including: a first position corresponding to locking the relative rotation of the base and the worktable and a second position corresponding to releasing the relative rotation of the base and the worktable; a second operating part located within a range that can be operated simultaneously with the first operating part by one hand; the positioning mechanism is driven via a second transmission component to release the restriction between the worktable and the base at the preset position; the second operating part relative to the first operating part includes: a third position corresponding to restricting the worktable and the base at the preset position and a fourth position corresponding to releasing the restriction of the positioning mechanism on the worktable and the base.

[0006] In some embodiments, the second transmission assembly includes a second transmission section, and the driving force of the second operating section drives the positioning mechanism to deform through the second transmission section. The second transmission section at least partially includes a flexible structure so that the second transmission section deforms under the action of an external force.

[0007] In some embodiments, the flexible structure includes a steel wire rope.

[0008] In some embodiments, one end of the second transmission part is wound around the second operating part, and the other end is connected to the positioning mechanism. The length of the second transmission part is greater than the distance between the second operating part and the positioning mechanism.

[0009] In some embodiments, the second transmission assembly further includes a tension adjustment section disposed at one end of the second transmission section near the second operating section, for adjusting the length of the second transmission section between the second operating section and the positioning mechanism.

[0010] In some embodiments, the first operating part includes: a first handle for operation and movable between a first position and a second position; and a first limiting structure formed or connected to the first handle for holding the first handle in the first position.

[0011] In some embodiments, the second operating part includes: a second handle disposed on the first handle for operation and movable between a third position and a fourth position; and a biasing element providing a biasing force to reset the second handle from the fourth position to the third position.

[0012] In some embodiments, the operating mechanism further includes: a limiting component for holding the second plate handle in a fourth position; the limiting component includes a first limiting portion disposed on the second operating part and a second limiting portion disposed on the first operating part in cooperation with the first limiting portion.

[0013] In some embodiments, the first transmission assembly includes: a first transmission rod connected to a locking mechanism, the first transmission part being a rigid structure capable of reciprocating between the first operating part and the locking mechanism; and a second drive part disposed between the first operating part and the first transmission rod, the second drive part converting the reciprocating motion of the first operating part into the reciprocating movement of the first transmission rod.

[0014] In some embodiments, the miter saw further includes: a support base connecting the cutting mechanism and the worktable; the support base is disposed at a first end of the worktable; and an operating mechanism is connected to the worktable and at least partially disposed at a second end of the worktable.

[0015] This application provides a miter saw that facilitates the locking and positioning of the worktable's rotational movement. Multiple functions are integrated into a single operating component, enabling true one-handed operation and simplifying the process. The locking and positioning of the worktable are controlled by independent transmission mechanisms, improving user efficiency and experience. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the first embodiment in this application; Figure 2 yes Figure 1 A schematic diagram of the top view; Figure 3 yes Figure 1A schematic diagram of an exploded view from another perspective; Figure 4 yes Figure 1 A structural diagram of a portion of the components; Figure 5 yes Figure 4 A top-down view of the structure of a portion of the components; Figure 6 yes Figure 4 A structural diagram of a portion of the components viewed from below; Figure 7 yes Figure 4 A partial structural diagram of the part, in which the operating handle is in the second position; Figure 8 This is a structural diagram of the first locking mechanism in the first embodiment of this application, in which the operating handle is in the second position; Figure 9 yes Figure 8 A diagram from another perspective; Figure 10 This is a structural diagram of the first locking mechanism in the first embodiment of this application, in which the operating handle is in the first position; Figure 11 yes Figure 10 A diagram from another perspective; Figure 12 This is a structural diagram of the first locking mechanism in the first embodiment of this application, in which the operating handle is in the third position; Figure 13 yes Figure 12 A diagram from another perspective; Figure 14 yes Figure 13 A partial structural diagram; Figure 15 This is a structural diagram of the clutch portion in the first embodiment of this application; Figure 16 This is a structural diagram of the workbench, base, locking mechanism, positioning mechanism, and operating mechanism in the first embodiment of this application; Figure 17 yes Figure 16 Exploded view; Figure 18 yes Figure 16 A diagram from another perspective; Figure 19 yes Figure 18 A sectional view of AA in the diagram; Figure 20 yes Figure 18 A sectional view of BB in the diagram; Figure 21 yes Figure 16A schematic diagram of part of the locking mechanism, positioning mechanism and operating mechanism is shown. The first plate handle shows part of the internal structure. In the figure, the first plate handle is in the second position and the second plate handle is in the third position. Figure 22 yes Figure 16 A schematic diagram of part of the locking mechanism, positioning mechanism and operating mechanism is shown. The first plate handle shows part of the internal structure. In the figure, the first plate handle is the second position and the second plate handle is the fourth position. Figure 23 yes Figure 16 A schematic diagram of part of the locking mechanism, positioning mechanism and operating mechanism is shown. The first plate handle shows part of the internal structure. In the figure, the first plate handle is the first position and the second plate handle is the fourth position. Figure 24 yes Figure 16 A schematic diagram of part of the structure of the first operating section; Figure 25 This is a structural diagram of the first and second operating parts in the second embodiment of this application; Figure 26 yes Figure 25 A diagram from another perspective; Figure 27 yes Figure 25 Exploded view of part of the structure; Figure 28 yes Figure 25 A schematic diagram of part of the structure of the first plate handle; Figure 29 yes Figure 25 A schematic diagram of a portion of the structure from another perspective; Figure 30 This is a partial exploded view of the first and second operating parts of the third embodiment in this application; Figure 31 yes Figure 30 Exploded view of part of the structure; Figure 32 This is a structural diagram of the first and second operating parts in the fourth embodiment of this application; Figure 33 yes Figure 32 A structural diagram from another perspective; Figure 34 yes Figure 33 Exploded view of part of the structure; Figure 35 This is a structural diagram of the first and second operating parts of the fifth embodiment in this application; Figure 36 yes Figure 35 Exploded view of part of the structure; Figure 37This is a structural diagram of the first and second operating parts in the sixth embodiment of this application; Figure 38 yes Figure 37 An exploded view of a portion of the structure from another perspective; Figure 39 This is a structural diagram of the first and second operating parts in the seventh embodiment of this application; Figure 40 yes Figure 39 Exploded view of part of the structure; Figure 41 This is a structural diagram of the second transmission component in the eighth embodiment of this application. Detailed Implementation

[0017] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0019] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] To clearly illustrate the technical solution of this application, the terms "upper side", "lower side", "left side", "right side", "front side" and "rear side" are defined in the accompanying drawings.

[0021] like Figures 1 to 24 A first embodiment of the miter saw 100 of this application is shown. The miter saw 100 includes a base 11, a worktable 12, a cutting mechanism 13, a support mechanism 14, and a power supply mechanism 70.

[0022] like Figures 1 to 3As shown, the base 11 supports the worktable 12, and understandably, the base 11 supports the entire miter saw 100. The miter saw 100 can be placed stably on the ground or operating surface via the base 11. Specifically, the base 11 is located below the worktable 12, and the cutting mechanism 13 is located above the worktable 12.

[0023] The cutting mechanism 13 includes a cutting element 131 and a motor 132. The cutting element 131 is used to realize the cutting function of the slant saw 100, and it is specifically a circular saw blade. The motor 132 is used to provide a power source and can drive the cutting element 131 to rotate in a cutting plane S, thereby enabling the cutting element 131 to cut the workpiece placed on the worktable 12.

[0024] like Figures 1 to 4 As shown, the support mechanism 14 includes a frame 141 and a guide rail assembly 142. The cutting mechanism 13 also includes a connector 133 connecting the cutting mechanism 13 and the guide rail assembly 142. The guide rail assembly 142 is disposed on the frame 141 and includes a slide rail 1421. The connector 133 has a through hole 1331 through which the guide rail assembly 142 passes. The slide rail 1421 passes through the through hole 1331, which has a certain depth, allowing the guide rail assembly 142 to move in the front-back direction within the through hole 1331. A stop 1422 is provided at one end of the guide rail assembly 142 to prevent the guide rail assembly 142 from disengaging from the through hole 1331. The cutting mechanism 13 can be pivotally connected to the connector 133, meaning that the cutting mechanism 13 can rotate around the working axis 104. By rotating the cutting mechanism 13 around the working axis 104, the cutting element 131 can gradually approach the workpiece for cutting operations or gradually move away from the workpiece when the cutting operation is completed.

[0025] In this embodiment, the cutting mechanism 13 further includes a protective cover 134 that at least partially covers the cutting element 131. It is understood that the protective cover 134 can also be fixedly connected to the connector 133. For safety reasons, the protective cover 134 further includes a first protective cover 1341 fixedly connected to the connector 133 and a second protective cover 1342 rotatable relative to the connector 133. The first protective cover 1341 always surrounds at least a portion of the cutting element 131. In the uncut state, the second protective cover 1342 can surround at least a portion of the cutting element 131 and prevent the cutting element 131 from being exposed to direct contact with the user. When the user operates the handle 135, the cutting mechanism 13 rotates around the working axis 104, causing the cutting element 131 to gradually approach the workpiece for cutting. As the user operates the handle 135, causing the cutting element 131 to gradually penetrate deeper into the workpiece, the second protective cover 1342 can gradually rotate away from the worktable 12 or away from the cutting element 131, thereby enabling the cutting element 131 to cut the workpiece. The lower end of the protective cover 134 is also provided with a traveling wheel 1343 at the contact point with the worktable 12 to assist the cutting mechanism 13 in moving back and forth on the worktable 12.

[0026] The power supply mechanism 70 provides electrical power to the miter saw 100. In this embodiment, the power supply mechanism 70 is a battery pack, and it is mounted on the support mechanism 14. In other alternative embodiments, it is also placed on the cutting mechanism 13. It is understood that the installation position of the power supply mechanism 70 does not affect the protection scope of this application. In other alternative implementations, technical solutions obtained by equivalent substitution or equivalent transformation without other creative effort all fall within the protection scope of this application. The battery pack, in conjunction with the corresponding power circuit, supplies power to the corresponding components within the miter saw 100. Those skilled in the art should understand that the power supply mechanism 70 is not limited to the scenario of using a battery pack; it can also supply power to the corresponding components within the machine through mains power or AC power, in conjunction with corresponding rectification, filtering, and voltage regulation circuits.

[0027] like Figure 2 and Figures 4 to 5 As shown, a first channel 121 extending vertically through the worktable 12 is also formed therethrough, and the first channel 121 extends in the front-back direction. The first end 121a of the first channel is located inside the worktable 12, and the second end 121b of the first channel extends to the outside of the worktable 12, which is the front end of the cutting mechanism 13. The first channel 121 allows the cutting element 131 to pass through when cutting the workpiece and is at least partially accommodated inside the first channel 121 to form a first receiving cavity 1211. The worktable 12 and the second end 121b of the first channel provide support for the traveling wheels 1343 of the protective cover 134, which move on both sides of the first receiving cavity 1211.

[0028] The first end 12a of the worktable 12 is located after the first end 121a of the first channel. A support 15 is disposed at the first end 12a of the worktable, that is, at the rear end of the cutting mechanism 13. Specifically, the support 15 is pivotally connected to the frame 141, and the frame 141 can support and drive the cutting mechanism 13 to rotate relative to the worktable 12 around the first straight line 101. When the cutting mechanism 13 rotates relative to the worktable 12 about the first straight line 101, it can achieve inclined cutting of the workpiece in a vertical position. That is, when the cutting mechanism 13 rotates relative to the worktable 12 along the first straight line 101, the cutting plane S formed by the cutting piece 131 is inclined to the plane formed in the vertical direction.

[0029] Furthermore, the first straight line 101 is located within the cutting plane S, and the cutting plane S also rotates about the first straight line 101 as an axis. The worktable 12, the first channel 121, and the support base 15 are all basically symmetrical with respect to the first straight line 101. In this embodiment, the first channel 121 also extends along the direction of the first straight line 101.

[0030] like Figures 1 to 13As shown, the mitered saw 100 also includes a first locking mechanism 16. The first locking mechanism 16 includes at least three states: a first state, a second state, and a third state. When the first locking mechanism 16 is in the first state, it locks the rotation of the cutting mechanism 13 relative to the worktable 12 about a first straight line 101. When the first locking mechanism 16 is in the second state, it allows the cutting mechanism 13 to rotate relative to the worktable 12. When the first locking mechanism 16 is in the third state, the cutting mechanism 13 can be operated to select a set position for rotation along a preset direction. When the first locking mechanism 16 leaves the third state, after the cutting mechanism 13 rotates to that set position along a preset direction, the first locking mechanism 16 restricts the cutting mechanism 13 from continuing to move along the preset direction beyond the set position. That is, when the first locking mechanism 16 is in the third state, it can position the rotation of the cutting mechanism 13. In other words, when the first locking mechanism 16 is in the third state, the cutting mechanism 13 and the support base 15 are in a free-rotating state. The operator can operate the cutting mechanism 13 to a set position and then operate the first locking mechanism 16 to leave the third state, thus completing the rotational positioning of the cutting mechanism 13 by the first locking mechanism 16. In this embodiment, the cutting mechanism 13 can be limited to the set position and cannot rotate in another direction. In other alternative embodiments, it can continue to move in another direction, depending on the structure of the first locking mechanism 16. The limited "set position" can be a point, i.e., a positioning point, or the cutting mechanism 13 can move within a certain range, at which point it has two close positioning points, and the set position is between the two positioning points. The "preset direction" can be clockwise rotation around the first straight line 101 axis or counterclockwise rotation around the first straight line 101, depending on the operator's actual needs.

[0031] The first locking mechanism 16 includes an operating handle 160, which is disposed at the second end 12b of the worktable and is used to switch the state of the first locking mechanism 16. It is understood that "the second end 12b of the worktable" refers to an end that is not the same as or on a different side from the first end 12a of the worktable, and is not limited to the end directly opposite to the first end 12a. In this embodiment, to facilitate operation, the operating handle 160 is disposed on one side 12b1 of the second end 12b of the worktable. In this embodiment, the first locking mechanism 16 extends substantially along the first straight line 101.

[0032] The operating handle 160 includes at least a first position corresponding to the first state, a second position corresponding to the second state, and a third position corresponding to the third state. The operating handle 160 switches between the first, second, and third positions by reciprocating along a first direction F1. In this embodiment, the operating handle 160 reciprocates along the first direction F1 about a second straight line 102 to switch the state of the first locking mechanism 16. In this embodiment, the second straight line 102 is parallel to or coincides with the first straight line 101. Of course, the second straight line 102 and the first straight line 101 may also intersect. In other alternative embodiments, the operating handle 160 may also move linearly along the first direction F1, i.e., translate and slide. Restricting the movement of the operating handle 160 in switching at least three working states of the first locking mechanism 16 to one direction facilitates the operator's operation, and the switching action is more continuous and simple. On the other hand, it is possible to switch between three states with one operating handle 160, which is more conducive to one-handed operation by the operator. To improve operator comfort during switching, the edge of the operating handle 160 does not extend beyond the bottom surface of the base 11 when switching between the three positions. This prevents the operator from interfering with or colliding with the placement surface or ground when using the operating handle 160.

[0033] The operating handle 160 moves between the first position, the second position, and the third position under the action of an external force, such as... Figures 7 to 12 As shown in the figure. The second position is located between the first and third positions, and is also the second initial position. It should be noted that the first, second, or third positions are not necessarily limited to those shown in the figure. The positions shown in the figure represent the limit or critical positions for achieving the state of the first locking mechanism 16 in this embodiment. As long as the first locking mechanism 16 can achieve the function described in the above state, it can be considered to have reached the corresponding position. This position may also be a position between the first, second, or third positions shown in the figure.

[0034] The first locking mechanism 16 further includes a locking component 161 and a stop component 163. The locking component 161 provides a locking force to lock the relative rotation of the cutting mechanism 13 and the worktable 12. The locking component 161 includes a working state providing the locking force to lock the relative rotation of the cutting mechanism 13 and the worktable 12, and a releasing state releasing the locking force. The first state of the first locking mechanism 16 is when the operating handle 160 is in the first position, at which point the locking component 161 is in the working state. The second or third state of the first locking mechanism 16 is when the operating handle 160 is in the second or third position, at which point the locking component 161 is in the released state. The stop component 163 provides multiple preset positions, and after selecting a preset position via the operating handle 160, restricts the cutting mechanism 13 from continuing to move along a preset direction. The stop component 163 includes a positioning state selectable from the multiple preset positions, in which the cutting mechanism 13 can rotate, and a limiting state restricting the cutting mechanism 13 from continuing to move along the preset direction beyond the selected preset position. The third state of the first locking mechanism 16 is when the operating handle 160 is in the third position, and the stop component 163 is in the positioning state. When the first locking mechanism 16 leaves the third state, that is, when the operating handle 160 leaves the third position, the stop component 163 restricts the cutting mechanism 13 from continuing to move in the preset direction, and the stop component is in the limiting state.

[0035] The first locking mechanism 16 further includes a drive assembly 162, which is formed or connected to the operating handle 160. The drive assembly 162 is connected to the locking assembly 161 and the stop assembly 163 respectively.

[0036] The drive assembly 162 includes a first drive rod 1621 connected to or formed on the operating handle 160, a second drive rod 1622 connected to the locking assembly 161, and a first transmission part 1623 connected to the stop assembly 163. The second drive rod 1622 is connected to or formed on the first drive rod 1621, and the first transmission part 1623 is connected to or formed on the first drive rod 1621. Furthermore, to enable the operating handle 160 to switch between three states, it is more convenient for the operator to operate with one hand. It can be understood that the operating handle 160 drives the first drive rod 1621, and the first drive rod 1621 controls the locking assembly 161 and the stop assembly 163 respectively through the second drive rod 1622 and the first transmission part 1623.

[0037] In this embodiment, the first drive rod 1621 is directly connected to the operating handle 160, and both the first drive rod 1621 and the operating handle 160 rotate about the second straight line 102 as an axis. It is understood that the first drive rod 1621 and the operating handle 160 can be the same component. In this embodiment, the first drive rod 1621 and the second drive rod 1622 also rotate about the second straight line 102 as an axis.

[0038] The support base 15 is fixedly connected to the worktable 12, and the frame 141 is pivotally connected to the support base 15. The frame 141 sequentially includes a pivot portion 1411, an extension portion 1412, and a connecting portion 1413. The pivot portion 1411 is pivotally connected to the support base 15 and transmits the rotation of the frame 141. The extension portion 1412 extends upward relative to the worktable 12, connecting the pivot portion 1411 and the connecting portion 1413. The connecting portion 1413 is connected to a connector 133. The pivot portion 1411 and the support base 15 can communicate in a receiving space; in this embodiment, this space is the second receiving space 14a. It is understood that the rotation of the cutting mechanism 13 relative to the worktable 12 about a first straight line 101 is achieved through the rotation of the frame 141 relative to the support base 15 about the first straight line 101. Simultaneously, the locking assembly 161 and the stop assembly 163 are basically disposed within the second receiving space 14a.

[0039] like Figures 8 to 15As shown, the locking assembly 161 includes: a first fixing member 1611, which is movably connected to the second drive rod 1622, and the first fixing member 1611 is fixedly connected to the support base 15. A second fixing member 1612 is connected to the end of the second drive rod 1622. A locking piece 1613 is penetrated by the second drive rod 1622 and is disposed between the first fixing member 1611 and the second fixing member 1612. A first elastic member 1614 is disposed between the locking piece 1613 and the second fixing member 1612. Further, the end of the second drive rod 1622 away from the first drive rod 1621 is a second end 1622b, and the second end 1622b is provided with a threaded section. The first fixing member 1611 and the locking piece 1613 are fixedly connected to the housing of the support base 15. The second fixing member 1612 is fixedly connected to the second end 1622b of the second drive rod 1622. The first elastic member 1614 is disposed between the second fixing member 1612 and the locking piece 1613. Part of the housing of the support base 15 and the frame 141 is disposed between the second fixing member 1612 and the locking piece 1613. When the second drive rod 1622 is driven by the operating handle 160 to rotate around the second straight line 102, that is, when the operating handle 160 rotates from the second position to the first position, the second drive rod 1622 moves forward along the second straight line 102 towards the oblique saw 100. The second fixing member 1612 presses the first elastic member 1614 and then presses the locking piece 1613 and the housing of the support base 15 to the first fixing member 1611, so that the locking assembly 161 locks the rotation of the support base 15 and the frame 141. The locking assembly 161 is in the working state, and the first locking mechanism 16 reaches the first state. When the second drive rod 1622 is driven by the operating handle 160 to rotate in the opposite direction around the second straight line 102, that is, when the operating handle 160 rotates from the first position to the second position, the second drive rod 1622 moves behind the oblique saw 100 along the second straight line 102. Under the restoring force of the first elastic member 1614, the second drive rod 1622 drives the second fixing member 1612 away from the locking piece 1613 more quickly, completing the unlocking of the locking component 161. The locking component 161 is in the released state, and the rotational movement of the cutting mechanism 13 is released. At this time, the first locking mechanism 16 can enter the second state or the third state.

[0040] The locking assembly 161 also includes a clutch portion 1615 connecting the first drive rod 1621 and the second drive rod 1622. The clutch portion 1615 is further used to limit the movement of the first drive rod 1621 behind the oblique saw 100 along the direction of the second straight line 102, that is, to limit further movement during the release process. Figure 15As shown, the clutch portion 1615 includes a first clutch element 1615a and a second clutch element 1615b, each having a mutually engaging surface. Specifically, the first clutch element 1615a is fixed to the second drive rod 1622 and simultaneously fixedly connected to the housing below the worktable 12. The second clutch element 1615b is fixedly connected to the first drive rod 1621. Both the first clutch element 1615a and the second clutch element 1615b have through holes through which the first drive rod 1621 passes. Furthermore, the surface of the first clutch element 1615a facing the second clutch element 1615b has a stepped step 1615c, which increases in height along the second straight line 102, forming a cross-section after reaching a certain height. The surface of the second clutch element 1615b facing the first clutch element 1615a also has a shape that engages with the first clutch element 1615a. The two surfaces described above each have at least two stepped structures 1615c. The second clutch 1615b has a shaped hole 1615d at its center. This shaped hole 1615d is a through hole, different from a round hole. Correspondingly, the first drive rod 1621 has a protrusion that can engage with this shaped hole, completing the fixed connection between the second clutch 1615b and the first drive rod 1621. Specifically, when the first clutch 1615a and the second clutch 1615b are engaged, due to the constraint of the two cross-sections, the rotation of the first drive rod 1621 in the opposite direction along the second straight line 102 is restricted by the clutch structure.

[0041] The locking assembly 161 further includes a second connecting member 1616 located in front of the second clutch member 1615b. A second elastic member 1617 is provided between the second connecting member 1616 and the second clutch member 1615b, with both ends of the second elastic member 1617 connected to the second connecting member 1616 and the second clutch member 1615b, respectively. The second connecting member 1616 is sleeved on the first drive rod 1621 and is movably connected to the first drive rod 1621. The first drive rod 1621 can slide and rotate within the second connecting member 1616. The second connecting member 1616 is also fixedly connected to the worktable 12 housing. When the first drive rod 1621 rotates around the second straight line 102, the first drive rod 1621 moves forward of the oblique saw 100 along the second straight line 102. At the same time, the locking assembly 161 locks, and the second clutch 1615b moves along the step 1615c under the drive of the first drive rod 1621 until it separates from the first clutch 1615a under the drive of the second elastic member 1617. When the first drive rod 1621 rotates in the opposite direction around the second straight line 102, the first drive rod 1621 moves behind the oblique saw 100 along the second straight line 102. The second clutch 1615b approaches the first clutch 1615a under the drive of the first drive rod 1621. When they approach each other and the two surfaces mesh and squeeze the second elastic member 1617, the cross-sections of the two surfaces lock together, preventing the second clutch 1615b from moving further, thus restricting the first drive rod 1621 from moving further. At this time, the critical state after unlocking is reached, ensuring that the cutting system can complete the movement after unlocking.

[0042] The stop assembly 163 includes a positioning block 1631 and a positioning pin 1632. The positioning block 1631 is located within the frame 141, thus indirectly connected to the cutting mechanism 13. It can be understood that the positioning block 1631 can be directly connected to the cutting mechanism 13. The positioning block 1631 has multiple mating parts 1631a. In this embodiment, the mating parts 1631a are several positioning holes, each corresponding to a different angle of rotation of the frame 141. The positioning pin 1632 is connected to the first transmission part 1623. The positioning pin 1632 reciprocates substantially along a direction parallel to the second straight line 102. After the positioning pin 1632 is connected to any mating part 1631a, it restricts the cutting mechanism 13 from continuing to rotate. The positioning pin 1632 is at least partially connected to the housing of the support base 15, ensuring that the positioning pin 1632 can only move along a direction parallel to the second straight line 102.

[0043] The first transmission unit 1623 includes an eccentric block 1623a, a flexible connector 1624, and a first transmission block 1626. The eccentric block 1623a connects the first transmission block 1626 and the flexible connector 1624. The first transmission block 1626 is connected to the first drive rod 1621. Specifically, the first transmission block 1626 is sleeved on the first drive rod 1621, and when the first drive rod 1621 rotates, the first transmission block 1626 rotates synchronously with the first drive rod 1621. The first transmission block 1626 has a first extension portion 1626a extending radially. The rotation axis 1623b of the eccentric block 1623a is connected to the worktable 12, so that the rotation axis 1623b of the eccentric block 1623a can only swing about the eccentric axis 1623c, which is parallel to the second straight line 102. The eccentric block 1623a has a first eccentric portion 1623d and a second eccentric portion 1623e on both sides of its rotation axis 1623b, with the length direction in a plane in the left-right direction. Both the first eccentric portion 1623d and the second eccentric portion 1623e extend in a direction perpendicular to the second straight line 102; that is, the angle between the first eccentric portion 1623d and the second eccentric portion 1623e is greater than 90° and less than 180°. The second eccentric portion 1623e is connected to a flexible connector 1624, which in this embodiment is a steel wire rope. The first eccentric portion 1623d is selectively connected to a first extension portion 1626a. The first extension portion 1626a and the eccentric block 1623a change the transmission direction of the first drive rod 1621. The flexible connector 1624 is slidably connected to the worktable 12 by multiple first fixing structures 1625, specifically installed on one side of the first channel 121. One end of the flexible connector 1624 is connected to the second eccentric part 1623e, and the other end is connected to the locating pin 1632.

[0044] When the first locking mechanism 16 is in its third state, i.e., when the operating handle 160 is in its third position, the stop assembly 163 is in a positioning state. The rotation of the first drive rod 1621 causes the first transmission block 1626 to rotate synchronously with the first drive rod 1621. The first extension 1626a presses down on the first eccentric part 1623d, causing the eccentric block 1623a to rotate. Subsequently, the second eccentric part 1623e rotates upward, driving the flexible connector 1624 to slide backward. The flexible connector 1624 then drives the positioning pin 1632 to move backward along a direction parallel to the second straight line 102, disengaging the positioning pin 1632 from the positioning block 1631. At this time, the operation of the cutting mechanism 13 is activated, i.e., the operation of the positioning block 1631 to rotate. When the operating cutting mechanism 13 is rotated to the required angle, the operating handle 160 moves in the opposite direction to the second position. The first extension 1626a moves in the opposite direction and stops pressing down on the first eccentric part 1623d. The eccentric block 1623a resets and rotates. The second eccentric part 1623e rotates downward. The positioning pin 1632 moves forward in a direction parallel to the second straight line 102. The positioning pin 1632 is connected to the positioning block 1631, so that the positioning pin 1632 enters one of the positioning holes on the positioning block 1631. Since the positioning pin 1632 is at least partially connected to the support base 15, the cutting mechanism 13 can be positioned to the set position by the positioning pin 1632.

[0045] In other embodiments, the positioning hole can be an irregularly shaped long hole such as an arc hole, with each end of the hole corresponding to a specific cutting angle, so that the positioning pin 1632 can rotate within a certain set range, so that the cutting mechanism 13 can rotate within a certain set range. When it rotates to the two ends, it corresponds to two set angles respectively. The operator can quickly determine the required angle range without having to check the scale after the 100-degree bevel saw.

[0046] like Figures 1 to 2 and Figures 16 to 24 As shown, in addition to the cutting mechanism 13 being able to rotate relative to the worktable 12, the worktable 12 of the bevel saw 100 can also rotate relative to the base 11, the purpose of which is to form a bevel cut on the workpiece. The axis of rotation of the worktable 12 relative to the base 11 is the bevel axis 103. In this embodiment, the bevel axis 103 extends in the vertical direction. Specifically, the bevel axis 103 is perpendicular to the first straight line 101.

[0047] like Figures 16 to 24As shown, the miter saw 100 further includes: a miter angle locking mechanism, a positioning mechanism 18, and an operating mechanism 19. The miter angle locking mechanism provides a locking force to lock the relative rotation of the base 11 and the worktable 12. In this embodiment, for ease of distinction, the miter angle locking mechanism is designated as the second locking mechanism 17. The positioning mechanism 18 provides multiple preset positions and can selectively restrict the worktable 12 relative to the base 11 to a selected preset position. The operating mechanism 19 is for gripping and operation to rotate the worktable 12 relative to the base 11. The operating mechanism 19 includes: a first operating part 19a, which drives the second locking mechanism 17 to provide locking force via a first transmission assembly 192. The first operating part 19a includes: a first position corresponding to the relative rotation of the locking base 11 and the worktable 12, and a second position corresponding to the relative rotation of the releasing base 11 and the worktable 12. The second operating unit 19b is located within the range that can be operated simultaneously with the first operating unit 19a using one hand. It drives the positioning mechanism 18 via the second transmission assembly 194 to release the restriction between the worktable 12 and the base 11 at a preset position. The second operating unit 19b, relative to the first operating unit 19a, includes a third position corresponding to the restriction of the worktable 12 and base 11 at the preset position, and a fourth position corresponding to the release of the restriction imposed by the positioning mechanism 18 on the worktable 12 and base 11. The "range that can be operated simultaneously with one hand" refers to the range within which at least one finger of the same hand can reach and apply operating force to the second operating unit 19b when the operator holds and can apply operating force to the first operating unit 19a. Thus, by placing both the first operating unit 19a and the second operating unit 19b within the range that can be operated with one hand, the first operating unit 19a and the second operating unit 19b on the operating mechanism 19 can be reached and operated with the single hand holding the operating mechanism 19, without the need for the other hand. This allows for one-handed control of the rotation of the worktable 12 relative to the base 11, making operation more convenient.

[0048] In this embodiment, the first operating part 19a and the second operating part 19b are connected as a whole component. However, the first operating part 19a and the second operating part 19b control the second locking mechanism 17 and the positioning mechanism 18 through two transmission components. The transmission components do not interfere with each other. The locking and positioning of the worktable 12 and the base 11 are controlled by two independent transmission components, which makes the control more accurate.

[0049] In this embodiment, the second locking mechanism 17, the positioning mechanism 18, and the operating mechanism 19 all extend substantially along the length of the first channel 121. Specifically, they extend parallel to the first straight line 101. Most of the second locking mechanism 17, the positioning mechanism 18, the first transmission assembly 192, and the second transmission assembly 194 are located below the worktable 12. The first operating part 19a and the second operating part 19b are connected to the front side 12b2 of the second end 12b of the worktable; that is, the first operating part 19a and the second operating part 19b, along with the operating handle, are located at the same end relative to the worktable 12. However, for user convenience, the first operating part 19a and the second operating part 19b, along with the operating handle, are located at different positions relative to the same end of the worktable 12.

[0050] In this embodiment, the first operating part 19a includes a first handle 191, which the operator holds during operation and moves between a first position and a second position. The second operating part 19b includes a second handle 193, which is disposed on the first handle 191, and which the operator holds during operation and moves between a third position and a fourth position. Specifically, the first handle 191 is rotatably connected to the housing of the second end 12b of the worktable about a third straight line 105 as its axis of rotation. In this embodiment, the third straight line 105 is perpendicular to or intersects the first straight line 101. The first handle 191 is generally flat and its size is suitable for an adult to hold with one hand. A third receiving space 191a is formed in the middle of the first handle 191, and the second handle 193 is disposed in the third receiving space 191a. The second handle 193 rotates about a fourth straight line 106 parallel to the third straight line 105 as its axis of rotation. The second handle 193 is positioned on the palm-facing surface of the first handle 191. It can be understood that when the operator holds the first handle 191, the second handle 193 is simultaneously held in their hand. Therefore, when the first handle 191 is switched between the first and second positions, the second handle 193, being on the first handle 191, will also move along with it. Alternatively, the movement of the first handle 191 will inevitably cause the second handle 193 to move as well. The second handle 193 can move relative to the first handle 191, that is, the second handle 193 can move about the fourth straight line 106 as an axis, allowing the second handle 193 to switch between the third and fourth positions relative to the first handle 191.

[0051] like Figure 21As shown, when the first handle 191 is in the second position, it is in its initial position. At this time, the second locking mechanism 17 releases the second position of relative rotation between the base 11 and the worktable 12. The initial position of the second handle 193 is the third position. Specifically, the third position of the second handle 193 relative to the first handle 191 is when the second handle 193 extends beyond the first handle 191, that is, the second handle 193 is closer to the operator's hand grip position. The fourth position of the second handle 193, relative to the third position, is when the second handle 193 is closer to the first handle 191. To facilitate operator operation, the fourth position is when the surfaces of the second handle 193 and the first handle 191 are flush with the surface of the hand gripping the worktable 12. At this time, the positioning mechanism 18 releases the restriction on relative rotation between the worktable 12 and the base 11.

[0052] Therefore, when the operator holds the operating mechanism 19, that is, when holding the first handle 191, the second handle 193 will first be switched from the third position to the fourth position. For example... Figure 22 As shown, the first handle 191 is in the second position and the second handle 193 is in the fourth position. Therefore, the second locking mechanism 17 is releasing the locking force while the positioning mechanism 18 is releasing the positioning restriction. The operator can then rotate the worktable 12 relative to the base 11 using the operating mechanism 19. When rotated to the appropriate position, it is necessary to restrict the worktable 12 and base 11 at this position. The operator slightly loosens the grip during the holding action to release the second handle 193, allowing it to extend beyond the first handle 191. At this point, the second handle 193 is in the third position, and the positioning mechanism 18 restricts the worktable 12 and base 11 to the preset position. It is understandable that the restrictive force provided by the positioning mechanism 18 is insufficient to ensure that the worktable 12 and base 11 do not move relative to each other during cutting. When it is necessary to lock the relative rotation of the worktable 12 and base 11, the first handle 191 is operated to move it to the first position, such as... Figure 23 As shown. The second locking mechanism 17 provides locking force to lock the relative rotation of the worktable 12 and the base 11. At this time, the position of the second plate handle 193 does not affect the locking force provided by the second locking mechanism 17.

[0053] To ensure the first handle 191 remains in the first position, the first operating part 19a further includes a first limiting structure 1912 formed or connected to the first handle 191. The first limiting structure 1912 is a cam structure, located behind the first handle rotation shaft 1911. This cam structure utilizes the external force required for movement from the farthest end to the proximal end of the cam structure to form a stop point D for limiting. Furthermore, the cam can convert rotational motion into linear reciprocating motion, thereby driving the first transmission assembly 192 to control the second locking mechanism 17. It is understood that this structure is not limited to this embodiment. Any specific structure that can achieve the goal of moving the first handle 191 from the first position to the second position under external force and converting the rotational motion of the first handle 191 into linear reciprocating motion can be understood as a similar implementation to this application. Moreover, the above two functions can be implemented by one component or by two separate components.

[0054] The first transmission assembly 192 includes a first drive unit 1921 and a first transmission rod 1922. The first drive unit 1921 can selectively contact the first limiting structure 1912, and the first transmission rod 1922 is connected to the first drive unit 1921. The first drive unit 1921 converts the rotational motion of the first plate handle 191 into the reciprocating movement of the first transmission rod 1922. The first transmission rod 1922 is connected to the second locking mechanism 17. The first transmission rod 1922 is a rigid structure and can reciprocate between the first operating part 19a and the second locking mechanism 17, thereby driving the second locking mechanism 17 to provide a locking force. The first drive unit 1921 is an elastically deformable component; specifically, the first drive unit 1921 is an elastic sheet. The first drive unit 1921 is mounted on the rear side of the first plate handle 191 along a direction perpendicular to the first straight line 101. The first drive unit 1921 is mounted on the worktable 12, and its mounting point can serve as a reference point for its elastic deformation. When the first plate handle 191 switches from the second position to the first position, the contact between the cam structure of the first limiting structure 1912 and the first drive part 1921 changes from a small diameter position to a large diameter position. The first drive part 1921 deforms backward along the first straight line 101, driving the first transmission rod 1922 to move backward. When the first plate handle 191 reaches the first position, the farthest end of the cam structure contacts the first drive part 1921, and the contact surface is closer to the small diameter surface located downstream of the farthest end. That is, when the first plate handle 191 reaches the first position, the contact between the cam structure and the first drive part 1921 is behind the dead point D of the cam structure. Therefore, the first plate handle 191 remains in the first position, continuously keeping the first drive part 1921 in a state of backward deformation along the first straight line 101. Thus, the second locking mechanism 17 continuously provides locking force for locking the worktable 12 and the base 11. When the first plate handle 191 switches from the first position to the second position, the contact between the cam structure of the first limiting structure 1912 and the first drive unit 1921 changes from a large-diameter position to a small-diameter position, or from contact to no contact. At this time, the first drive unit 1921 elastically resets and moves forward, driving the first transmission rod 1922 to move forward. The second locking mechanism 17 releases the locking force of the locking table 12 and the base 11, thereby unlocking the rotation of the table 12 and the base 11.

[0055] In this embodiment, the first transmission rod 1922 reciprocates along the direction of the first straight line 101. The first transmission rod 1922 is connected to the worktable 12, thereby restricting the vertical movement of the first transmission rod 1922 and reducing the component force of the movement of the first transmission rod 1922. In this embodiment, the second locking mechanism 17 is composed of the first transmission rod 1922 and the base 11. When the second locking mechanism 17 needs to provide locking force, the first transmission rod 1922 presses against the base 11 along the direction of the first straight line 101, and the base 11 is restricted by the friction between the two. In other alternative embodiments, the second locking mechanism can be composed of two components connected to the second locking mechanism 17 and the base 11. Since the second locking mechanism is prior art, only one type is disclosed in this embodiment, and will not be described in detail here.

[0056] The second transmission assembly 194 includes a second transmission section 1941, through which the driving force of the second operating section 19b causes the positioning mechanism 18 to deform. The second transmission section 1941 at least partially includes a flexible structure to allow it to deform under external force. In this embodiment, the second transmission section 1941 is a steel wire rope, or a portion of the second transmission section 1941 is composed of steel wire rope. The flexible structure allows for unrestricted assembly of the second transmission section 1941 when connecting the second operating section 19b and the positioning mechanism 18. The flexible structure can deform according to the assembly path, reducing the precision requirements of the assembly. One end of the second transmission section 1941 is connected to the rear end of the second plate handle 193. Specifically, one end of the steel wire rope passes through the rear end of the second plate handle 193 and is then fixed. The other end of the second transmission section 1941 is connected to the positioning mechanism 18.

[0057] The positioning mechanism 18 includes an adjusting member 181. The adjusting member 181 is an elastic structure, connected to the other end of the second transmission part 1941, specifically located below the second transmission part 1941. The first end 181a of the adjusting member is connected to the housing of the worktable 12 via a second fixed structure 183, allowing the connection point of the second fixed structure 183 to serve as a reference point for elastic deformation movement. The second end 181b of the adjusting member is located above the adjusting part 111 of the base 11, which has a scale for adjusting the horizontal rotation of the worktable 12. Furthermore, the second end 181b of the adjusting member has a positioning member 182, with several positioning grooves 1112 on the adjusting part 111, each corresponding to a different rotation angle of the worktable 12 and the cutting mechanism 13. Specifically, the positioning member 182 protrudes downwards, and the shape of the protrusion matches the shape of the positioning groove 1112.

[0058] like Figures 16 to 17 He Ru Figure 21As shown, when the second plate handle 193 is in the third position, the positioning member 182 is connected to the positioning groove 1112, or the positioning member 182 is in contact with the adjusting part 111 and near the positioning groove 1112. Continuing to rotate the worktable 12 allows the positioning member 182 to enter the positioning groove 1112. When the second plate handle 193 is in the third position, the adjusting member 181 does not undergo elastic deformation, or even if it does undergo elastic deformation, the deformation is insufficient to cause the positioning member 182 to leave the positioning groove 1112. Figure 22 As shown, when the second plate handle 193 switches from the third position to the fourth position, the second plate handle 193 rotates around the fourth straight line 106 as the axis of rotation, thereby driving the second transmission part 1941 to move away from the base 11. In this embodiment, a cam structure is provided at the position where the second plate handle 193 connects to the second transmission part 1941, thereby converting the rotational motion of the second plate handle 193 into the linear reciprocating motion of the second transmission part 1941. Guided by the second fixing structure 183, the portion of the second transmission part 1941 connected to the second end of the adjusting member 181 is substantially perpendicular to the second end 181b of the adjusting member and located above the second end 181b of the adjusting member. When the second transmission part 1941 moves away from the base 11, the portion of the second transmission part 1941 connected to the second end of the adjusting member 181 moves upward, causing the second end of the adjusting member 181 to deform upward, the positioning member 182 leaves the positioning groove 1112, and the adjusting assembly leaves the base 11, at which point it enters the release state, and the worktable 12 can rotate relative to the base 11. When the operator releases their grip on the second handle 193, a biasing element is provided in the second operating part 19b to automatically reset the second handle 193 from the fourth position to the third position. This biasing element provides a biasing force to the second handle 193 to reset it from the fourth position to the third position. In this embodiment, the biasing element (not shown in the figure) is a torsion spring connecting the first handle 191 and the second handle 193. In other alternative embodiments, the biasing element may not be provided, and the second handle 193 may be driven from the fourth position back to the third position by the elastic restoring force of the adjusting member 181.

[0059] The operating mechanism 19 further includes a limiting component 195 for holding the second handle 193 in the fourth position. It is understood that there may be situations where the limiting function of the positioning mechanism 18 needs to be temporarily canceled during actual operation. In this case, using the limiting component 195 to hold the second handle 193 in the fourth position allows the limiting function of the positioning mechanism 18 to be released. The limiting component 195 includes a first limiting part 1951 disposed on the second operating part 19b and a second limiting part 1952 disposed on the first operating part 19a in cooperation with the first limiting part 1951. In this embodiment, the first limiting part 1951 is a groove or latch disposed on the upper side wall of the second handle 193, and the second limiting part 1952 is a groove or latch disposed on the side wall of the first handle 191 that cooperates with the latch. When it is necessary to hold the second handle 193 in the fourth position, the second handle 193 is pressed further, and the first limiting part 1951 and the second limiting part 1952 engage with each other, locking the second handle 193. At this time, the second plate handle 193 is in the fifth position, which is lower than the fourth position. When it is necessary to release the limit, the second plate handle 193 is moved in the opposite direction, and the engagement between the first limiting part 1951 and the second limiting part 1952 is released, thus releasing the limit. In other embodiments, the specific structure of the first limiting part 1951 and the second limiting part 1952 is not limited to a snap-fit ​​limit, as long as they can cooperate with each other to limit relative movement and can be released by external force.

[0060] To facilitate the installation of the second transmission part 1941, the length of the second transmission part 1941 is selected such that the length used to connect the second plate handle 193 and the adjusting member 181 is greater than the actual length between the second plate handle 193 and the adjusting member 181. The length of the second transmission part 1941 between the second plate handle 193 and the adjusting member 181 is adjusted by a tension adjustment part 196 located at one end of the second transmission part 1941. It is understood that the tension adjustment part 196 adjusts the length of the second transmission part 1941 used to connect the second plate handle 193 and the adjusting member 181, thereby adjusting the tension of the second transmission part 1941, and consequently, the ease with which the second plate handle 193 drives the positioning mechanism 18. Furthermore, this helps to extend the service life of the second transmission part 1941. In this embodiment, the tension adjustment part 196 is located on the second plate handle 193 side. In other alternative embodiments, it can be located on the adjusting member 181 side. Tension adjustment part 196 is provided on the first plate handle 191, including a main body 1961 with two through holes 1962 and a detachable fastener 1963 disposed between the two through holes 1962. A second transmission part 1941 passes through one through hole 1962 and exits the main body 1961 through the other through hole 1962. After the fastener 1963 is screwed into the main body 1961, its top end presses against the second transmission part 1941, fixing the second transmission part 1941 to the main body 1961. When adjustment is needed, the fastener 1963 is loosened, and the fastener 1963 no longer presses against the second transmission part 1941, thus adjusting the tension of the second transmission part 1941.

[0061] like Figures 25 to 39 The image shows a beveling saw according to a second embodiment of this application, wherein components that are the same as or corresponding to those in Embodiment 1 are referred to by the same reference numerals or names as those in Embodiment 1. For simplicity, only the differences between Embodiment 2 and Embodiment 1 are described. The specific structures of the first operating part 29a and the second operating part 29b, which differ from those in Embodiment 1, are also shown.

[0062] In this embodiment, the first operating part 29a includes a first handle 291. During operation, the operator holds the first handle 291 and moves it between a first position and a second position. The first handle 291 is rotatably connected to the housing at the second end of the worktable about a third straight line 205 as a pivot. The first handle 291 is generally flat and its size is suitable for an adult to hold with one hand.

[0063] The second operating unit 29b includes a second handle 293 disposed on the first handle 291. The second handle 293 reciprocates on the first handle 291 about a fourth straight line 206. The fourth straight line 206 is perpendicular to the third straight line 205. Specifically, the fourth straight line 206 extends vertically. In actual operation, the operator holds the first handle 291 and uses their thumb to move the second handle 293 between the third and fourth positions. It can be understood that when the operator holds the first handle 291, the second handle 293 is simultaneously held in the operator's hand on the first handle 291. Therefore, when the first handle 291 is operated to switch between the first and second positions, the second handle 293, being on the first handle 291, will also move together with the first handle 291. It can also be understood that the movement of the first handle 291 will inevitably drive the second handle 293 to move together. The second handle 293 can move relative to the first handle 291, that is, the second handle 293 moves about the fourth straight line 206 as an axis, so that the second handle 293 switches between the third position and the fourth position relative to the first handle 291.

[0064] A third receiving space 291a is formed in the middle of the first plate handle 291, and the second transmission part 1941 passes through the third receiving space 291a. The first plate handle 291 is provided with a sliding groove 2913, which connects the third receiving space 291a to the outside. In this embodiment, a third transmission part 2942 is provided between the second plate handle 293 and the second transmission part 1941, and the third transmission part 2942 is at least partially disposed in the third receiving space 291a. The third transmission part 2942 is formed or connected to the second plate handle 293 through the sliding groove 2913, and the second transmission part 1941 is connected to the third transmission part 2942. The third transmission part 2942 is connected to the first plate handle 291 through a rotating shaft 2943, and the third transmission part 2942 rotates about the fourth straight line 206 as an axis. The second transmission part 1941 is connected to the eccentric position 2944 of the third transmission part 2942. The second transmission part 1941, entering the third receiving space 291a, is connected to the first plate handle 291 by the third fixing structure 2945. The third fixing structure 2945 sets the second transmission part 1941 into an arc shape with the fourth straight line 206 as the center line. One end of the arc shape is connected to the third transmission part 2942, and the other end extends out of the third receiving space 291a. The slide groove 2913 is arc-shaped, and the slide groove 2913 is provided with a third position, a fourth position, and a fifth position in sequence. In this embodiment, the limiting component 295 is a stepped limiting surface. The first plate handle 291 between the third position and the fourth position has a protrusion 2951 provided in the third receiving space 291a, and the protrusion 2951 is between the third transmission part 2942 and the first plate handle 291. When in the fourth position to the fifth position, the protrusion 2951 is removed, so this part and the protrusion 2951 form a groove 2952. When the second plate handle 293 moves beyond the fourth position to the fifth position, the third transmission part 2942 enters the groove 2952 and is thus confined within it, unable to return to the fourth position. The operator needs to press the second plate handle 293 to disengage the third transmission part 2942 from the groove 2952 and then continue to move the second plate handle 293 towards the fourth position to return it to its original position. In this embodiment, the tension adjustment part 296 is disposed on the third transmission part 2942. Its specific structure is the same as in Embodiment 1.

[0065] like Figures 30 to 31 The image shows a slant saw according to a third embodiment of this application, wherein components that are the same as or corresponding to those in Embodiment 2 are referred to by the same reference numerals or names as those in Embodiment 2. For simplicity, only the differences between Embodiment 3 and Embodiment 2 are described. The specific structures of the first handle 391 and the second operating part 39b, which differ from those in Embodiment 2, are also described in this embodiment.

[0066] The first plate handle 391 does not have a sliding groove. The second operating part 39b includes a second plate handle 393 and a third transmission part 3942. The connection between the second plate handle 393 and the third transmission part 3942 coincides with the rotation axis 3943 of the third transmission part 3942. The third transmission part 3942 is rotatably connected to the first plate handle 391 about a fourth straight line 306. The third transmission part 3942 includes a first limiting part 3944, and a second limiting part 3912 is connected to the first plate handle 391. The second limiting part 3912 is provided with a protruding surface 3912a. When the second plate handle 393 moves from the third position to the fourth position, the first limiting part 3944 slides on the upstream lower surface 3912b of the second limiting part 3912. When the second plate handle 393 moves from the fourth position to the fifth position, the first limiting part 3944 passes through the protruding surface 3912a. Therefore, the second limiting part 3912 is restricted by the first limiting part 3944, preventing the second plate handle 393 from automatically resetting from the fifth position to the fourth position. The operator needs to push the second plate handle 393 from the fifth position to the fourth position, causing the first limiting part 3944 to slide again across the raised surface 3912a and into the upstream lower surface 3912b, thus resetting the second plate handle 393 to the fourth position.

[0067] like Figures 32 to 34 The image shows a slant saw according to the fourth embodiment of this application, wherein components that are the same as or corresponding to those in Embodiment 3 are referred to by the same reference numerals or names as those in Embodiment 3. For simplicity, only the differences between Embodiment 4 and Embodiment 3 are described. The specific structure of the second operating part, etc., differs from that of Embodiment 3 in the slant saw of this embodiment.

[0068] In this embodiment, the second plate handle 493 is rotatably connected to the first plate handle 491 via a bobbin portion 4931. The second plate handle 493 rotates about the fourth straight line 406 as an axis. The second transmission portion 1941 is wound around the outer periphery of the bobbin portion 4931. As the second plate handle 493 rotates, the length of the second transmission portion 1941 wound around the bobbin portion 4931 changes, thereby realizing the control of the positioning mechanism.

[0069] The tension adjustment part 496 is disposed on the bobbin part 4931, including a main body 4961 with two through holes 4962 and a fastener 4963 disposed on the two through holes 4962. The main body 4961 is sleeved on the bobbin part 4931. The second transmission part 1941 passes through one through hole 4962 and exits the main body 4961 through the other through hole 4962. The second transmission part 1941 passes through the tension adjustment part 496 before winding into the bobbin part 4931. After the fastener 4963 is screwed into the main body 4961, its top end presses against the second transmission part 1941, fixing the second transmission part 1941 onto the main body 4961. When adjustment is required, the fastener 4963 is loosened, and the fastener 4963 no longer presses against the second transmission part 1941, thereby adjusting the tension of the second transmission part 1941.

[0070] The limiting assembly includes a first limiting part 4951 and a second limiting part 4952. The first limiting part 4951 is a groove provided on the bottom of the second plate handle 493, and the second limiting part 4952 is a buckle provided on the upper side arm of the first plate handle 491.

[0071] like Figures 35 to 36 The image shows a slant saw according to the fifth embodiment of this application, wherein the same or corresponding parts as in Embodiment 1 are referred to by the same reference numerals or names as in Embodiment 1. For simplicity, only the differences between Embodiment 5 and Embodiment 1 are described. The specific structures of the first operating part 59a and the second operating part 59b in this embodiment differ from those in Embodiment 1.

[0072] In this embodiment, the first operating part 59a includes a first handle 591, a first limiting structure 5912, and a first connecting part 592. The first connecting part 592 is disposed between the first handle 591 and the first limiting structure 5912. The first connecting part 592 can be a separate component connected between the first handle 591 and the first limiting structure 5912. In other alternative embodiments, the first connecting part 592 is connected to the first handle 591 or the first limiting structure 5912 after forming a single component.

[0073] The first plate handle 591 rotates about the third straight line 505 as an axis. In this embodiment, the third straight line 505 is perpendicular to or intersects the first straight line.

[0074] The second operating part 59b includes a second sleeve 594 and a first lever 595. The second sleeve 594 is sleeved on the outside of the first connecting part 592. The second sleeve 594 rotates about a fourth straight line 506 as an axis, and the first plate handle 591 is basically symmetrically arranged about the fourth straight line 506. In this embodiment, the fourth straight line 506 is perpendicular to the third straight line 505 and parallel to the first straight line. It can be understood that when the operator holds the first plate handle 591, the thumb or the thumb and forefinger can rotate the second sleeve 594.

[0075] The second transmission part 1941 is connected to the first lever 595. The first lever 595 is arranged in a direction perpendicular to the fourth straight line 506. A first slot 5941 is radially provided on the inner wall of the second sleeve 594, and the width of the first slot 5941 is adapted to the diameter of the first lever 595. Specifically, the width of the first slot 5941 is slightly larger than the diameter of the first lever 595 so that the end of the first lever 595 can be inserted into the first slot 5941 to meet assembly requirements. The first slot 5941 extends along the axis of the second sleeve 594, and it can be understood that the length direction of the first slot 5941 is parallel to or coincides with the direction of the fourth straight line 506. The first connecting part 592 is hollow inside, and a second sliding groove 593 is provided on its outer wall to connect the interior of the first connecting part 592 with the outside. The part of the first lever 595 that connects to the second transmission part 1941 is located inside the first connecting part 592. At least one end of the first lever 595 extends from the second slide groove 593 through the first connecting portion 592 and then engages with the first slot 5941. The second slide groove 593 includes a first stop 5931 near the first plate handle 591 and a second stop 5932 near the first limiting structure 5912. It is understood that the first stop 5931 is located in front of the second stop 5932. When the first lever 595 slides to the first stop 5931, the second transmission part 1941 moves forward, causing the adjusting member to deform. When the first lever 595 slides to the second stop 5932, the second transmission part 1941 is in a reset or backward movement, and the adjusting member does not deform. Therefore, when the first lever 595 is at the first stop 5931, the second sleeve 594 corresponds to the fourth or fifth position; when the lever is at the second stop 5932, the second sleeve 594 corresponds to the third position. Since the second sleeve 594 drives the first lever 595 to slide within the second groove 593, the first stop 5931 and the second stop 5932 are sequentially arranged along the rotation direction of the second sleeve 594. That is, when the second sleeve 594 rotates to the right, the second stop 5932 is located to the right rear of the first stop 5931. If the second sleeve 594 rotates to the left, the second stop 5932 is located to the left rear of the first stop 5931. A transition section 5933 is provided between the first stop 5931 and the second stop 5932, allowing the first lever 595 to be smoothly oscillated by the second sleeve 594. A stop section 5934 is provided between the first stop 5931 and the transition section 5933, requiring the first lever 595 to move from the first stop 5931 through the stop section 5934 into the transition section 5933 under the action of external force. Among them, the stop segment 5934 is a straight segment that is basically parallel to the third straight line 505.

[0076] like Figures 37 to 38The image shows a slant saw according to the sixth embodiment of this application, wherein the same or corresponding parts as in Embodiment 5 are referred to by the same reference numerals or names as in Embodiment 5. For simplicity, only the differences between Embodiment 6 and Embodiment 5 are described. The specific structures of the first operating part 69a and the second operating part 69b, which differ from those in Embodiment 5, are also shown.

[0077] In this embodiment, the first operating part 69a includes a first handle 691, a first limiting structure (not shown in the figure), and a first drive ring 692. The first drive ring 692 is disposed between the first handle 691 and the first limiting structure (not shown in the figure). The first handle 691 rotates about a third straight line 605, which is parallel to the first straight line. One end of the first handle 691 is fixed to the worktable by a fourth fixing structure 693. The first limiting structure (not shown in the figure) is a threaded structure provided at the connection of the fourth fixing structure 693. When the first handle 691 is rotated, it moves back and forth along the third straight line 605, thereby driving the first transmission rod 1922 to move back and forth.

[0078] The second operating part 69b includes a second sleeve 694 and a first lever 695. The second sleeve 694 is disposed below the first plate handle 691, and the second sleeve 694 rotates about a fourth straight line 606. The fourth straight line 606 is arranged parallel to the third straight line 605.

[0079] A first drive ring 692 is sleeved at the rear end of the first plate handle 691. The first drive ring 692 rotates about a third straight line 605. A first external gear 6921 is provided on the first drive ring 692. A second external gear 6942 that meshes with the first external gear 6921 is provided on the second sleeve 694. In this embodiment, when the operator holds the first plate handle 691, the thumb or the thumb and forefinger can rotate the first drive ring 692, and the first drive ring 692 drives the second sleeve 694 to rotate through gear transmission.

[0080] The second operating part 69b also includes a second inner cylinder 696. A second sleeve 694 is fitted onto the outside of the second inner cylinder 696. After the second inner cylinder 696 extends out of the second sleeve 694, it is fixed to the worktable by a fifth fixing structure 698. The second transmission part 1941 is connected to the first lever 695. The first lever 695 is arranged in a direction perpendicular to the fourth straight line 606. A first slot 6941 is radially provided on the inner wall of the second sleeve 694. The width of the first slot 6941 is adapted to the diameter of the first lever 695. Specifically, the width of the first slot 6941 is slightly larger than the diameter of the first lever 695 so that the end of the first lever 695 can be inserted into the first slot 6941 to meet assembly requirements. The first slot 6941 extends along the axis of the second sleeve 694. It can be understood that the length direction of the first slot 6941 is parallel to or coincides with the direction of the fourth straight line 606. The second inner cylinder 696 is hollow inside, and a second groove is formed on its outer wall to connect the interior of the second inner cylinder 696 with the outside. The portion of the first lever 695 that connects to the second transmission part 1941 is located inside the second inner cylinder 696. At least one end of the first lever 695 extends out of the second inner cylinder 696 from the second groove and then engages with the first slot 6941. The second groove includes a first stop 6971 and a second stop 6972, with the first stop 6971 located before the second stop 6972.

[0081] When the first lever 695 slides to the first stop 6971, the second transmission part 1941 moves forward, causing the adjusting member to deform. When the first lever 695 slides to the second stop 6972, the second transmission part 1941 is either in a reset position or moving backward, and the adjusting member does not deform. Therefore, when the first lever 695 is at the first stop 6971, the second sleeve 694 is in the fourth or fifth position; when the first lever 695 is at the second stop 6972, the second sleeve 694 is in the third position. Since the second sleeve 694 drives the first lever 695 to slide within the second groove, the first stop 6971 and the second stop 6972 are sequentially arranged along the rotation direction of the second sleeve 694. That is, when the second sleeve 694 rotates to the right, the second stop 6972 is located to the right rear of the first stop 6971. When the second sleeve 694 rotates to the left, the second stop 6972 is located to the left rear of the first stop 6971. A transition section 6973 is provided between the first stop 6971 and the second stop 6972, allowing the first lever 695 to be smoothly moved by the second sleeve 694. A stop section 6974 is provided between the first stop 6971 and the transition section 6973, requiring the lever to pass from the first stop 6971 through the stop section 6974 and into the transition section 6973 under the action of external force. The stop section 6974 is a straight section that is basically parallel to the third straight line 605.

[0082] like Figures 39 to 40The image shows a slant saw according to the seventh embodiment of this application, wherein the same or corresponding parts as in Embodiment 5 are referred to by the same reference numerals or names as in Embodiment 5. For simplicity, only the differences between Embodiment 7 and Embodiment 5 are described. The specific structures of the first operating part 79a and the second operating part 79b, which differ from those in Embodiment 5, are also shown.

[0083] In this embodiment, the first operating part 79a includes a first plate handle 791, a first connecting part 792, and a second clutch part 793. The second operating part 79b includes a second sleeve 794 and a second lever 795. The second sleeve 794 is rotatably sleeved outside the first connecting part 792. Both the first plate handle 791 and the second sleeve 794 rotate about a third straight line 705, which is parallel to the first straight line. The second lever 795 is arranged in a direction perpendicular to the third straight line 705. A second transmission part is connected to the second lever 795. The second lever 795 is formed on or connected to the second sleeve 794.

[0084] The first connecting portion 792 extends out of the second sleeve 794 and connects to the second clutch portion 793. The second clutch portion 793 includes a third clutch element 7931 and a fourth clutch element 7932. The third clutch element 7931 is selectively connected to the first transmission rod, and the fourth clutch element 7932 is connected to the first connecting portion 792. The fourth clutch element 7932 is restricted to rotational movement about a third linear axis 705 by the worktable, but allows reciprocating movement along the third linear axis 705. The third clutch element 7931 rotates synchronously with the first connecting portion 792 via a pin 796 and is restricted to reciprocating movement along the third linear axis 705.

[0085] The third clutch 7931 and the fourth clutch 7932 each have a mutually engaging surface. The surface of the third clutch 7931 facing the fourth clutch 7932 has a stepped structure, which increases in height along the third straight line 705 until it reaches a certain height and forms a cross-section. The surface of the fourth clutch 7932 facing the third clutch 7931 also has a shape that engages with the third clutch 7931.

[0086] When the first plate handle 791 rotates about the third straight line 705 as an axis, that is, from the second position to the first position, the first plate handle 791 drives the third clutch 7931 to rotate about the third straight line 705 as an axis. The meshing surface between the fourth clutch 7932 and the third clutch 7931 changes, and then the third clutch 7931 pushes the fourth clutch 7932 to move backward along the direction of the third straight line 705, pushing the first transmission rod to press against the base, and the second locking mechanism locks the rotation between the worktable and the base.

[0087] When the second sleeve 794 rotates about the third straight line 705, the second lever 795 also rotates about the third straight line 705, and then the second transmission part moves along the direction of the third straight line 705, causing the adjusting part to deform.

[0088] like Figure 41 The image shows an eighth embodiment of a bevel saw according to this application, wherein components that are the same as or corresponding to those in Embodiment 7 are referred to by the same reference numerals or names as those in Embodiment 7. For simplicity, only the differences between Embodiment 8 and Embodiment 7 are described. The bevel saw in this embodiment differs from that in Embodiment 7 in the second transmission assembly 894, etc.

[0089] In this embodiment, the second transmission assembly 894 includes a flap 8942 and a second transmission part (not shown in the figure). The first end 8942a of the flap is connected to the second lever 895, and the second end 8942b of the flap is connected to the second transmission part (not shown in the figure), which is connected to the adjusting member 181. The first end 8942a and the second end 8942b of the flap are connected to the worktable via a flap rotation shaft 8942c. The axis 809 of the flap rotation shaft 8942c is perpendicular to the third straight line 805. The flap 8942 oscillates about the axis 809 of the flap rotation shaft 8942c. It can be understood that when the first end 8942a and the second end 8942b of the flap 8942 move in opposite directions perpendicular to the third straight line 805, that is, when the first end 8942a moves downward, the second end 8942b of the flap 8942 moves upward. In this embodiment, the flap 8942 is located below the second sleeve 894, and the second lever 895 extends downward at least partially to abut against the flap 8942. When the second sleeve 896 is in the third position, the flap 8942 does not drive the adjusting member to deform, and the adjusting member remains in contact with the base. It can be understood that at this time, the first end 8942a of the flap is higher than the second end 8942b of the flap, or the first end 8942a of the flap is flush with the second end 8942b of the flap, or the first end 8942a of the flap is slightly lower than the second end 8942b of the flap. When the second sleeve 896 continues to rotate to the fourth position, the second lever 895 moves toward the first end of the flap 8942, and the second lever 895 pushes the first end 8942a of the flap, causing the first end 8942a of the flap to move downward, and the second end 8942b of the flap to move upward, driving the second transmission part (not shown in the figure) upward to deform the adjusting member.

[0090] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A miter saw, comprising: Base; A worktable, used to place workpieces, rotates relative to the base about a tangential axis; A cutting mechanism for performing the cutting operation on the workpiece; A locking mechanism provides a locking force to lock the relative rotation of the base and the worktable; The positioning mechanism provides multiple preset positions and can selectively constrain the worktable relative to the base at the selected preset position; Its characteristic is that it further includes: An operating mechanism for gripping and manipulating the worktable to rotate relative to the base; include: A first operating unit drives the locking mechanism to provide the locking force via a first transmission component; the first operating unit includes: a first position corresponding to the relative rotation of the locking base and the worktable and a second position corresponding to the relative rotation of the base and the worktable; the first operating unit includes a first plate handle. The second operating unit is located within a range that can be operated simultaneously with the first operating unit by one hand; it drives the positioning mechanism through a second transmission component to release the restriction between the worktable and the base at a preset position; the second operating unit includes, relative to the first operating unit, a third position corresponding to restricting the worktable and the base at the preset position and a fourth position corresponding to releasing the restriction of the positioning mechanism on the worktable and the base; the second operating unit includes a second handle, a third receiving space is formed in the first handle, and the second handle is at least partially disposed in the third receiving space; A limiting component is configured to cooperate with the first operating part and / or the second operating part to hold the second plate handle in the fourth position.

2. The beveling saw according to claim 1, characterized in that, The second transmission assembly includes a second transmission part, and the driving force of the second operating part drives the positioning mechanism to deform through the second transmission part. The second transmission part includes at least a flexible structure so that the second transmission part deforms under the action of external force.

3. The beveling saw according to claim 2, characterized in that, The flexible structure includes steel wire rope.

4. The beveling saw according to claim 2, characterized in that, One end of the second transmission part is wound around the second operating part, and the other end is connected to the positioning mechanism. The length of the second transmission part is greater than the distance between the second operating part and the positioning mechanism.

5. The beveling saw according to claim 4, characterized in that, The second transmission assembly further includes a tension adjustment section disposed at one end of the second transmission section near the second operating section, for adjusting the length of the second transmission section between the second operating section and the positioning mechanism.

6. The beveling saw according to claim 1, characterized in that, The first plate handle is operated and moves between the first position and the second position; A first limiting structure is formed or connected to the first plate handle for holding the first plate handle in a first position.

7. The beveling saw according to claim 6, characterized in that, The second plate handle is disposed on the first plate handle and is operated and can move between the third position and the fourth position; A biasing element provides a biasing force that resets the second plate handle from the fourth position to the third position.

8. The beveling saw according to claim 7, characterized in that, The limiting component includes a first limiting part disposed on the second operating part and a second limiting part disposed on the first operating part in cooperation with the first limiting part.

9. The beveling saw according to claim 1, characterized in that, The first transmission assembly includes: A first transmission rod is connected to the locking mechanism. The first transmission rod is a rigid structure and can reciprocate between the first operating part and the locking mechanism. The second drive unit is disposed between the first operating unit and the first transmission rod, and the second drive unit converts the reciprocating motion of the first operating unit into the reciprocating movement of the first transmission rod.

10. The beveling saw according to claim 1, characterized in that, The oblique saw also includes: A support base connects the cutting mechanism and the worktable; the support base is disposed at a first end of the worktable; the operating mechanism is connected to the worktable and is at least partially disposed at a second end of the worktable.

Images