Multifunctional miter saw

Abstract

The utility model discloses a multifunctional miter saw which comprises a miter saw body composed of a base, a working table and a machine head assembly, the working table is movably installed above the base, a support is installed at the rear end of the working table, the machine head assembly is installed on the support in a hinged mode, and folding wing assemblies are symmetrically installed on the two sides of the base. The wing unfolding assembly comprises a wing unfolding table top and an L-shaped wing unfolding support, the upper end of the wing unfolding support is hinged to the wing unfolding table top, the lower end of the wing unfolding support is hinged to the base, and the included angle of the inner side of the wing unfolding support is larger than 90 degrees; the wing unfolding table boards can be driven by the wing unfolding supports to ascend and descend in a folding mode, and when the wing unfolding table boards ascend, the two wing unfolding table boards can be oppositely buckled on the two sides of the machine head assembly to serve as upper workbenches. When the wing-unfolding table board is folded and descends, the wing-unfolding table board can be used as an extension surface of the workbench; a folding wing unfolding locking assembly is arranged between the wing unfolding table top and the machine head assembly. The bench saw is reasonable in structural design, the bench saw mode and the miter saw mode can be conveniently switched, and the cutting effect is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting electric tools, relates to the structure and performance improvement of a miter saw, and in particular to a multifunctional miter saw. Background Art

[0002] A miter saw, also known as a circular saw, aluminum saw, or miter saw, is a power tool that can cut and process materials such as wood, plastic, or metal to create desired components or workpieces. To use a miter saw, the material is placed securely on the worktable of the base. The saw head assembly is pushed to move the saw blade toward the material, and the saw blade is then rotated, typically with the lower portion of the blade making the cut. A typical table saw consists of a saw blade, a power system that drives the blade, a work surface, and a saw frame that supports the work surface. To use the table saw, the material is placed on the table and pushed toward the saw blade, typically with the upper portion of the blade making the cut.

[0003] Because table saws and miter saws offer different cutting effects, users often use them in conjunction with one another. However, existing compound saws are often complex and lack structural integrity. Switching between table saw and miter saw mode is labor-intensive and time-consuming, making them inconvenient.

[0004] For example, a Chinese patent (authorization announcement number CN209466334U, authorization announcement date October 8, 2019) discloses a "folding compound saw", comprising a base (1), a first working platform (2), a second working platform and a cutting unit, wherein the second working platform comprises a left platform (3) and a right platform (4), and the left platform (3) and the right platform (4) are foldable and liftable relative to the base (1). When the second working platform is raised, the second working platform is located above the first working platform (2), and the cutting unit is longitudinally extended between the left platform (3) and the right platform (4); when the second working platform is folded and lowered, the left platform (3) and the right platform (4) become extension surfaces on both sides of the first working platform (2).

[0005] The foldable compound saw disclosed above is still a simple one in which a foldable workbench is fixed on the cutting unit (head assembly). Although it improves the efficiency of switching between a miter saw and a table saw, it still has many structural deficiencies. Moreover, the strength of the foldable workbench supported only by the cutting unit (head assembly) is poor. The left platform (3), the right platform (4) and the cutting unit cannot effectively achieve flatness adjustment and locking. The brackets of the left platform (3) and the right platform (4) are not stable, which affects the cutting accuracy. In particular, when used as a miter saw, the sides and the front end of the cutting unit lack support and locking. When the saw blade is cutting, the lower part is open and has no protective measures, which generates a large amount of dust flying into the air, polluting the environment and endangering human health. Utility Model Content

[0006] The utility model aims to provide a multifunctional miter saw, which is used to solve the problem that the existing compound saw has a complex structure and is inconvenient to use in both table saw and miter saw modes.

[0007] In order to achieve the purpose of this utility model, the following technical solutions are adopted:

[0008] The multifunctional miter saw comprises a miter saw body consisting of a base, a workbench and a head assembly, a workbench movably mounted above the base, a bracket mounted at the rear end of the workbench, a head assembly hingedly mounted on the bracket, folding wing assemblies symmetrically mounted on both sides of the base, the wing assembly comprising a wing table and an L-shaped wing bracket, the upper end of the wing bracket being hinged to the wing table, the lower end of the wing bracket being hinged to the base, the inner angle of the wing bracket being greater than 90°; the wing table can be folded and raised and lowered under the drive of the wing bracket, when the wing table is raised, two sets of the wing tables can be relatively buckled on both sides of the head assembly as an upper workbench; when the wing table is folded and lowered, the wing table can serve as an extension of the workbench. Extension surface; a folding wing locking assembly is arranged between the wing table and the nose assembly, and the folding wing locking assembly includes a locking piece and a locking hook plate, the locking piece is installed at the bottom of the wing table, and the locking hook plate is installed on the side of the nose assembly; the locking piece includes a locking shaft, a locking handle, and a locking hook, the middle part of the locking shaft is sleeved in the mounting seat provided on the wing table, and the locking handle and the locking hook are fixedly installed on both sides of the mounting seat; a locking cavity is provided on the locking hook plate; when the locking handle is rotated downward, the locking hook is driven to hook the locking hook plate, so that the folding wing assembly and the nose assembly are locked; when the locking handle is rotated upward, the locking hook is driven to disengage from the locking hook plate, so that the folding wing assembly and the nose assembly are separated.

[0009] In order to further achieve the purpose of this utility model, the following technical solutions can also be adopted:

[0010] As described above, the multifunctional miter saw is provided with a detachable lower saw blade guard on the base. The lower saw blade guard is a semicircular shell with an opening, which is snapped onto the lower part of the machine head assembly. The bottom of the lower saw blade guard is provided with a plane matching the workbench, and the inner side of the lower saw blade guard is arc-shaped.

[0011] As described above, the multifunctional miter saw, the wing support includes a first support member and a second support member, the first support member is fixedly connected to one end of the second support member, the other end of the second support member is hinged to the mounting ear at the bottom of the wing table, and the other end of the first support member is hinged to the base; when the wing table is raised, the upper edge of the second support member forms a horizontal support for the wing table; when the wing table is folded and lowered, the top of the second support member and the middle inner side of the first support member cooperate to form a horizontal support for the wing table.

[0012] As described above, the multifunctional miter saw has an adjustment rod provided in the middle portion of the inner side of the first support member, and the adjustment rod is used for supporting and adjusting the horizontality of the wing table when it is folded and landed; one end of the adjustment rod is provided in a screw hole on the first support member, and the other end of the adjustment rod contacts the bottom of the wing table.

[0013] As described above, the multifunctional miter saw has multiple reinforcing ribs provided on the inner sides of the first and second support members; the outer periphery of the connection portion between the first and second support members is covered with a buffer pad; and the thickness of the first and second support members decreases from the connection portion outward.

[0014] As described above, the multifunctional miter saw has an elastic element installed in the locking shaft between the locking hook and the mounting seat. The elastic element is a disc spring or a corrugated pad, and the elastic element is used for the suspended positioning of the locking hook. The locking hook plate is a strip plate, and both ends of the strip plate are fixed to the mounting columns on the side of the head assembly by screws. The gap between the strip plate and the head assembly serves as a locking cavity.

[0015] As described above, the multifunctional miter saw, the locking shaft passes through the outer end of the locking handle to install a nut, and the nut is used to adjust the locking force between the locking hook and the locking hook plate.

[0016] As described above, the multifunctional miter saw has wing table positioning assemblies installed on both sides of the folding wing locking assembly. The wing table positioning assembly includes a positioning pin and a positioning pin hole. The positioning pin is installed at the bottom of the wing table, and the positioning pin hole is provided on the side of the head assembly.

[0017] As described above, the multifunctional miter saw has a front-end locking support assembly provided between the front end of the workbench and the machine head assembly, the front-end locking support assembly including a workbench hook and a front-end locking member, the lower end of the workbench hook is hinged to the front end of the workbench through a rotating shaft, and the front-end locking member is provided at the front end of the machine head assembly, and the workbench hook can be rotated, folded and lifted around the rotating shaft; the front-end locking member includes a locking hook groove and a locking structure, the locking hook groove is provided on the machine head assembly, and the locking hook groove cooperates with the hook portion at the upper end of the workbench hook; the locking structure includes a locking button, a bolt, a spring and a locking nut, the bolt is provided in the mounting hole of the machine head assembly, the locking nut is installed at the inner end of the bolt, the locking button is installed at the outer end of the bolt, and a spring is fitted around the outer periphery of the bolt between the locking nut and the mounting hole; when the workbench hook is raised, the rotating locking button can block the hook portion of the workbench hook in the hook groove.

[0018] As described above, the multifunctional miter saw has two locking ribs spaced apart on the locking button, and a protrusion is provided on the head assembly, which cooperates with the locking rib to limit the locking button from rotating between the two locking ribs; the upper part of the workbench hook is a U-shaped structure, and the hook is installed at the upper ends of both sides of the U-shaped structure; when the locking button blocks the hook of the workbench hook in the hook groove, the bolt is located between the two sides of the U-shaped structure, and the locking button is located on the front side of the workbench hook; the locking hook groove is a trapezoidal opening, and the hook of the workbench hook is a trapezoidal block that cooperates with the trapezoidal opening.

[0019] The advantages of the present invention are:

[0020] 1. When the present invention is used in table saw mode, the head assembly rotates about a pivot hinged at the rear end of the worktable, and the worktable hook rotates about a pivot hinged at its lower end to the base, allowing the hook to engage the locking hook slot of the head assembly and then be locked using the locking knob. The folding wing assembly rotates about a pivot hinged at its lower end to the base, and the wing table rotates about a pivot hinged at the wing bracket. The locating pins on the wing table are inserted into the locating pin holes, and the locking handle is rotated to engage the locking hook plate, connecting the wing table and the head assembly into a single unit, thus forming the table saw. In this state, the additional support of the wing table on both sides provides greater strength, and using both wing tables simultaneously increases the supporting area.

[0021] 2. When the present invention is used in miter saw mode, rotate the locking handle in the opposite direction to disengage the locking hook from the locking hook plate; then, hold the wing table or the wing bracket and pull it outward to disengage the positioning pin from the positioning pin hole; the wing table is folded and placed on both sides of the base, so that the wing table is flush with the work surface and can be used as an extension table when cutting long materials.

[0022] With the locking button unlocked, the table hook disengages from the machine head assembly. By rotating the hook, it can be lowered into the groove on the worktable, below the worktable surface. Removing the lower guard does not affect the saw's ability to cut material. The saw now operates just like a regular miter saw, without the upper worktable obstructing vision or the added weight of the machine head assembly causing inconvenience.

[0023] 3. In the folding wing locking assembly, the locking hook and locking shaft are integrated. The other end of the locking shaft passes through the hole in the mounting base and the locking handle, and is then secured with a nut. This secures these three components and allows them to rotate as a whole around the hole in the wing table. When rotated downward, the locking hook engages the locking hook plate, preventing the entire folding wing assembly from dislodging. When rotated upward, the locking hook clears the locking hook plate, allowing the folding wing assembly to open downward. Furthermore, a beveled surface on the locking hook facilitates engagement with the locking cavity in the locking hook plate, and the further the locking hook is rotated, the tighter the lock. An elastic element, such as a disc spring or corrugated washer, is placed between the locking hook and the mounting base boss. The nut pulls the locking shaft, allowing the locking hook to hover and position at any position during rotation, preventing it from free falling under the influence of gravity. The nut also allows the locking force between the locking hook and the locking hook plate to be adjusted.

[0024] 4. In the front locking support assembly of the miter saw, unlock the locking knob, and the table hook slides into the hook slot at the front of the head assembly. Then, reverse the locking knob to lock the hook in the slot, securing it. The locking knob has two retaining ribs, which are retained by a protrusion on the head assembly. The locking knob can only rotate freely between these two retaining ribs. The locking force is adjusted by adjusting the spring compression using the lock nut.

[0025] 5. The utility model is provided with a detachable lower saw blade guard. By cooperating with the lower saw blade guard and the machine head assembly, the saw blade can be completely sealed. The cutting dust can be guided along the arc of the lower guard shield to the retaining frame and then to the dust suction port to be sucked away. It is safe and can achieve dust-free cutting in the table saw state. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0027] Figure 1 It is a three-dimensional diagram of the utility model;

[0028] Figure 2 yes Figure 1 The expanded stereogram of

[0029] Figure 3 yes Figure 1The main view;

[0030] Figure 4 yes Figure 1 Upward-looking stereo Figure 1 ;

[0031] Figure 5 yes Figure 1 Upward-looking stereo Figure 2 ;

[0032] Figure 6 yes Figure 1 an enlarged view of the locking member;

[0033] Figure 7 yes Figure 1 An enlarged view of the locking hook plate;

[0034] Figure 8 yes Figure 1 An enlarged view of the protrusions and retaining ribs described in FIG.

[0035] Figure 9 yes Figure 1 An enlarged view of the locking structure described in;

[0036] Figure 10 yes Figure 1 Left side view;

[0037] Figure 11 yes Figure 10 Schematic diagram of the internal structure.

[0038] Reference numerals:

[0039] 1- Base;

[0040] 2- workbench, 21- workbench hook storage cavity;

[0041] 3-machine head assembly, 31-motor, 32-saw blade upper guard, 33-saw blade, 34-machine head handle;

[0042] 4-folding wing assembly, 41-wing table, 42-first support member, 421-lower connecting arm, 422-adjusting rod, 43-second support member, 44-buffer pad;

[0043] 5-folding wing locking assembly, 51-locking piece, 511-locking shaft, 512-locking handle, 513-locking hook, 514-elastic element, 515-nut, 52-locking hook plate;

[0044] 6- saw blade lower guard;

[0045] 7-wing table positioning assembly, 71-positioning pin, 72-positioning pin hole;

[0046] 8-front end locking support assembly, 81-workbench hook, 82-locking structure, 821-locking button, 822-bolt, 823-spring, 824-locking nut, 83-protrusion, 84-positioning rib. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0048] In the description of the embodiments of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0049] like Figures 1-11 As shown, the multifunctional miter saw disclosed in this embodiment includes a miter saw body consisting of a base 1, a workbench 2, and a head assembly 3. The workbench 2 is movably mounted on the base 1, a bracket is mounted at the rear end of the workbench 2, and the head assembly 3 is hingedly mounted on the bracket.

[0050] Structurally, the head assembly 3 is mainly composed of components such as a motor 31, a saw blade guard, a saw blade 33 and a head handle 34. The saw blade upper guard 32 is a detachable guard located on the top of the saw blade guard. The saw blade 33 is mounted on the rotating shaft of the motor 31 and is driven by the motor 31. The head assembly 3 can rotate vertically relative to the workbench 2 at the hinge point at the rear end. At the same time, the workbench 2 itself can also rotate in a plane on the base 1. When used as a miter saw, the material to be cut is fixed on the workbench 2 of the base 1, and the head assembly 3 is pushed to drive the saw blade 33 toward the material. The saw blade 33 is then rotated to work, and the lower part of the saw blade 33 is generally used to cut the material. In addition to achieving right-angle cutting, the miter saw can also achieve bevel cutting as needed.

[0051] The specific structure of the head assembly 3 and the miter saw body can refer to the applicant's previous technical solution content of "Application No. 201610476896.X, named integrated dust suction motor and miter saw".

[0052] As can be seen from the above structural description of the head assembly 3, due to the integration of components such as the motor 31, saw blade 33, and mounting bracket, the head assembly 3 is generally heavy. When used as a miter saw, the weight of the head assembly 3 can be used to apply downward pressure on the cutting force, while also ensuring that the saw blade 33 is not easily affected by vibration during cutting, thereby ensuring cutting accuracy.

[0053] However, when using the saw in table saw mode, the upper blade guard 32 must be opened, the material placed on the upper worktable (with the wing table raised), and the material pushed toward the saw blade 33. The upper portion of the saw blade 33 is generally used to cut the material. In this case, the only connection between the head assembly 3 and the worktable 2 is the rear bracket. Without a stable support and locking structure, the heavy head assembly 3 is prone to vibration, which can affect the quality and accuracy of the cut.

[0054] In addition, as a compound saw or multi-function miter saw, the convenience of switching between multiple modes and the folding wings themselves are also key points of the structure.

[0055] like Figure 1-Figure 3 As shown, the utility model symmetrically installs a folding wing assembly 4 on both sides of the base 1. The wing assembly includes a wing table 41 and an L-shaped wing bracket. The upper end of the wing bracket is hinged to the wing table 41, and the lower end of the wing bracket is hinged to the base 1. The inner angle of the wing bracket is greater than 90°.

[0056] The top surface of the wing table 41 is a flat structure with scales on the front and back to facilitate material length measurement. Affixed to the bottom of the wing table 41 are a mounting base, a locking member 51 from the folding wing locking assembly 5, and a positioning pin 71 from the wing table positioning assembly 7. To reduce the weight of the wing table 41, a hollowed-out strip or curved opening can be provided in the center of the wing table 41, which also enhances the aesthetics of the wing table 41 and the overall miter saw.

[0057] The inner angle of the wing support is set to be greater than 90°. On the one hand, it can maintain the compactness of the overall structure of the utility model; on the other hand, it can provide support to the wing table 41 and the head assembly 3 as well as an inward extrusion force, thereby ensuring the connection stability between the wing table 41 and the head assembly 3 on both sides and improving the cutting effect.

[0058] The wing tables 41 can be folded and raised on both sides of the base 1. When raised, the two wing tables 41 can be relatively buckled on both sides of the nose assembly 3 to serve as an upper workbench; when the wing tables 41 are folded and lowered, the wing tables 41 can serve as an extension of the workbench 2.

[0059] By folding the wing assembly 4, the multifunctional miter saw can be conveniently switched between the table saw mode and the miter saw mode, thereby increasing the scope of use of the utility model.

[0060] like Figure 4-Figure 7 In the present invention, a folding wing locking assembly 5 is provided between the wing table 41 and the nose assembly 3 .

[0061] The folding wing locking assembly 5 includes a locking member 51 and a locking hook plate 52. The locking member 51 is installed at the bottom of the wing table 41, and the locking hook plate 52 is installed on the side of the head assembly 3. By providing the folding wing locking assembly 5, the connection performance between the wing table 41 and the head assembly 3 can be improved.

[0062] The locking member 51 includes a locking shaft 511, a locking handle 512, and a locking hook 513. The middle part of the locking shaft 511 is mounted in a mounting seat provided on the wing table 41. The locking shaft 511 is fixedly installed with the locking handle 512 and the locking hook 513 on both sides of the mounting seat; a locking cavity is provided on the locking hook plate 52; when the locking handle is rotated downward, the locking hook 513 is driven to hook the locking hook 513 plate, so that the folding wing assembly 4 and the head assembly 3 are locked; when the locking handle is rotated upward, the locking hook 513 is driven to disengage from the locking hook 513 plate, so that the folding wing assembly 4 and the head assembly 3 are separated.

[0063] The connection and locking between the wing table 41 and the nose assembly 3 can adopt a variety of structures and methods. The folding wing locking assembly 5 adopted in the present invention is convenient to operate and has a firm locking effect.

[0064] When in use, the locking handle is turned downward to hook the locking hook 513 onto the locking hook 513 plate, and the entire folding wing assembly 4 will not fall out; the locking handle is turned upward to separate the locking hook 513 from the locking hook 513 plate, and the folding wing assembly 4 can be opened downward.

[0065] In addition, there is an inclined surface on the locking hook 513 to facilitate cooperation with the locking cavity on the locking hook plate 52, and the further the locking hook 513 rotates downward, the tighter the lock is.

[0066] like Figure 10 、 Figure 11 The utility model is equipped with a detachable lower saw blade guard 6 on the base 1. The lower saw blade guard 6 is a semicircular shell with an open opening. The semicircular shell is buckled into the lower part of the head assembly 3. The bottom of the lower saw blade guard 6 is provided with a plane matching the workbench 2, and the inner side of the lower saw blade guard 6 is arc-shaped.

[0067] By cooperating with the lower guard shield 6 of the saw blade and the machine head assembly 3, the saw blade 33 can be completely sealed, and the cutting dust can be guided along the arc of the lower guard shield to the retaining frame and then to the dust suction port to be sucked away, which is both safe and can achieve dust-free cutting in the table saw state.

[0068] Continue to see Figure 2 、 Figure 3 As shown, the wing-spreading bracket of the present invention includes a first support member 42 and a second support member 43. The first support member 42 is fixedly connected to one end of the second support member 43, and the other end of the second support member 43 is hinged to the mounting ear at the bottom of the wing-spreading table 41. The other end of the first support member 42 is hinged to the base 1.

[0069] like Figure 2 、 Figure 3 In the unfolded (folded) state of the folding wing assembly shown, the first support member 42 is the longer, horizontally inclined support portion of the wing support frame. One end of the first support member 42 is hinged to the base, while the other end of the first support member 42 contacts the support surface. The second support member 43 is the shorter, vertically inclined support portion of the wing support frame. The lower end of the second support member 43 contacts the support surface, while the upper end of the second support member 43 is hinged to the bottom of the wing support frame 41.

[0070] When the wing platform 41 is raised, the upper edge of the second support member 43 forms a horizontal support for the wing platform 41; when the wing platform 41 is folded and lowered, the top of the second support member 43 and the inner middle part of the first support member 42 cooperate to form a horizontal support for the wing platform 41.

[0071] The L-shaped wing support composed of the first support member 42 and the second support member 43 of the integrated structure provides a more stable and firm support to the wing table 41 than a vertical rod-shaped or plate-shaped support, and can form a triangular support effect.

[0072] The folding wing assembly 4 prevents pinching users when opened or folded, providing enhanced switching between modes. Furthermore, when used as a table saw, the wing table 41 is effectively leveled and supported by the head assembly 3. When used as a miter saw, the second support member 43 cooperates with the center portion of the first support member 42 to further stabilize the wing table 41 and ensure its alignment with the workbench 2.

[0073] like Figure 3 、 Figure 4 As shown, an adjustment rod 422 is provided in the middle of the inner side of the first support member 42 of the utility model, and the adjustment rod 422 is used for supporting and adjusting the horizontality of the wing-spreading table 41 when it is folded and landed; one end of the adjustment rod 422 is provided in a screw hole on the first support member 42, and the other end of the adjustment rod 422 contacts the bottom of the wing-spreading table 41.

[0074] The adjustment rod 422 can be provided to adjust the horizontality of the wing table 41 and can also isolate vibration transmission.

[0075] like Figure 1 、 Figure 2 As shown, multiple reinforcing ribs are provided on the inner side of the first support member 42 and the second support member 43; the outer periphery of the connection part of the first support member 42 and the second support member 43 is covered with a buffer pad 44; the thickness of the first support member 42 and the second support member 43 decreases from the connection part outward.

[0076] The ribs on the wing support and the thickness of the first and second support members 42 and 43 reduce the overall weight of the folding wing assembly 4. To optimize the structure of the wing support, a lower connecting arm 421 can be provided below the first support member 42, which is hingedly connected to the base 1 to further reduce weight and improve the folding conversion effect. A cushion 44 improves the wear and slip resistance of the wing support.

[0077] like Figure 6 As shown, the locking shaft 511 is fitted with an elastic element 514 between the locking hook 513 and the mounting seat. This elastic element 514 is used to keep the locking hook 513 in a suspended position. The locking hook plate 52 is a strip-shaped plate, with both ends secured to the mounting posts on the side of the handpiece assembly 3 by screws. The gap between the strip and the handpiece assembly 3 serves as a locking cavity. The locking shaft 511 passes through the outer end of the locking handle and is fitted with a nut 515.

[0078] An elastic element 514, such as a disc spring, a corrugated washer, etc., is added between the locking hook 513 and the mounting seat boss, and the nut 515 pulls the locking shaft 511, so that the locking hook 513 can be hovered and positioned at any position during the rotation process and will not fall freely under the action of gravity; at the same time, the locking force between the locking hook 513 and the locking hook 513 plate can be adjusted through the nut 515.

[0079] like Figure 4 、 Figure 6 As shown, the utility model installs a wing table positioning assembly 7 on both sides of the folding wing locking assembly 5. The wing table positioning assembly 7 includes a positioning pin 71 and a positioning pin hole 72. The positioning pin 71 is installed at the bottom of the wing table 41, and the positioning pin hole 72 is provided on the side of the nose assembly 3.

[0080] The wing table positioning assembly 7 can ensure that the two wing tables 41 on both sides of the nose assembly 3 are positioned and leveled uniformly, and at the same time, can also achieve rapid connection and locking between the locking hook 513 and the locking hook 513 plate.

[0081] like Figure 1 、 Figure 4 As shown, the present invention sets a front locking support assembly 8 between the front end of the workbench 2 and the head assembly 3. The front locking support assembly 8 includes a workbench hook 81 and a front locking member 51. The lower end of the workbench hook 81 is hinged to the front end of the workbench 2 via a rotating shaft. The front locking member 51 is set at the front end of the head assembly 3. The workbench hook 81 can be rotated, folded and raised around the rotating shaft.

[0082] like Figure 7-Figure 9 As shown, the front end locking member 51 of the present invention includes a locking hook groove and a locking structure 82. The locking hook groove is provided on the head assembly 3, and the locking hook groove cooperates with the hook portion at the upper end of the workbench hook 81.

[0083] The locking structure 82 includes a locking button 821, a bolt 822, a spring 823, and a locking nut 824. The bolt 822 is arranged in the mounting hole of the machine head assembly 3. The locking nut 824 is installed at the inner end of the bolt 822, and the locking button 821 is installed at the outer end of the bolt 822. The spring 823 is mounted on the outer periphery of the bolt 822 between the locking nut 824 and the mounting hole; when the workbench hook 81 is raised, rotating the locking button 821 can block the hook part of the workbench hook 81 in the hook groove.

[0084] Two locking ribs 84 are provided on the locking button 821 at intervals, and a protrusion 83 is provided on the head assembly 3. The protrusion 83 cooperates with the locking rib 84 to limit the locking button 821 from rotating between the two locking ribs 84; the upper part of the workbench hook 81 is a U-shaped structure, and the hook is installed at the upper ends of both sides of the U-shaped structure; when the locking button 821 blocks the hook part of the workbench hook 81 in the hook groove, the bolt 822 is located between the two sides of the U-shaped structure, and the locking button 821 is located on the front side of the workbench hook 81; the locking hook groove is a trapezoidal opening, and the hook part of the workbench hook 81 is a trapezoidal block that cooperates with the trapezoidal opening.

[0085] When the miter saw's front locking support assembly 8 is in use, the locking button 821 is opened, and the table hook 81 is rotated into the hook slot at the front end of the head assembly 3. The locking button 821 is then rotated in the opposite direction to retain the hook portion of the table hook 81 within the hook slot, preventing it from falling out. The two retaining ribs 84 on the locking button 821 and the protrusion 83 on the head assembly 3 ensure that the locking button 821 can only rotate freely between these two retaining ribs 84. The locking force is adjusted by adjusting the compression of the spring 823 using the locking nut 824.

[0086] Setting a locking support assembly 8 at the front end of the miter saw can improve the supporting function of the head assembly 3 in the table saw mode. A workbench hook storage cavity 21 is provided on the workbench 2. The workbench hook 81 can be stored below the plane of the workbench 2 after folding, without affecting the use of materials placed on the workbench 2.

[0087] The utility model can be used in table saw or miter saw mode, specifically:

[0088] When used in table saw mode: the head assembly 3 can rotate around the rotating shaft hinged at the rear end of the workbench 2; the workbench hook 81 can rotate around the rotating shaft hinged at the lower end to the base 1, so that the hook can hook the locking hook groove of the head assembly 3, and then be locked using the locking button 821; the folding wing assembly 4 can rotate around the rotating shaft hinged at the lower end to the base 1, and the wing table 41 can rotate around the rotating shaft hinged to the wing bracket; the locating pin 71 on the wing table 41 is inserted into the locating pin hole 72, and the locking handle is rotated to make the locking hook 513 hook the locking hook 513 plate, and the wing table 41 assembly and the head are connected as one, which is the table saw state.

[0089] At this time, due to the support of the folding wing components on both sides, the strength is better, and the wing tables 41 on both sides are used at the same time, so the supporting area is larger.

[0090] When using in miter saw mode: rotate the locking handle in the opposite direction to disengage the locking hook 513 from the locking hook 513 plate; then, hold the wing table 41 or the wing bracket and pull it outward to disengage the positioning pin 71 from the positioning pin hole 72; the wing table 41 is folded and placed on both sides of the base 1. The wing table 41 is flush with the workbench 2 and can be used as an extension table for cutting long materials.

[0091] With the locking button 821 unlocked, the table hook 81 is disengaged from the head assembly 3. By rotating the table hook 81, it can be moved to the table hook storage cavity 21, below the surface of the workbench 2. Removing the lower guard does not affect the saw's ability to cut material. The saw now behaves exactly like a conventional miter saw, without the upper workbench of the head assembly 3 obstructing vision or adding weight to the head assembly 3, causing inconvenience.

[0092] The technical contents not described in detail in this utility model are all well-known technologies.

Claims

1. A multifunctional miter saw, comprising a miter saw body consisting of a base, a workbench, and a head assembly, wherein the workbench is movably mounted above the base, a bracket is mounted at the rear end of the workbench, and the head assembly is hingedly mounted on the bracket, characterized in that: The folding wing assembly is symmetrically installed on both sides of the base, and the wing assembly includes a wing table and an L-shaped wing bracket. The upper end of the wing bracket is hinged to the wing table, and the lower end of the wing bracket is hinged to the base. The inner angle of the wing bracket is greater than 90°; the wing table can be folded and lifted under the drive of the wing bracket. When the wing table is raised, the two sets of wing tables can be relatively buckled on both sides of the head assembly as an upper workbench; when the wing table is folded and lowered, the wing table can serve as an extension surface of the workbench; a folding wing locking assembly is provided between the wing table and the head assembly, and the folding wing The wing locking assembly includes a locking piece and a locking hook plate, the locking piece is installed at the bottom of the wing spread table, and the locking hook plate is installed on the side of the nose assembly; the locking piece includes a locking shaft, a locking handle, and a locking hook, the middle part of the locking shaft is sleeved in the mounting seat provided on the wing spread table, and the locking shaft is fixedly installed with the locking handle and the locking hook on both sides of the mounting seat; a locking cavity is provided on the locking hook plate; when the locking handle is rotated downward, the locking hook is driven to hook the locking hook plate, so that the folding wing assembly and the nose assembly are locked; when the locking handle is rotated upward, the locking hook is driven to disengage from the locking hook plate, so that the folding wing assembly and the nose assembly are separated.

2. The multifunctional miter saw according to claim 1, wherein: A detachable saw blade lower guard is installed on the base. The saw blade lower guard is a semicircular shell with an open opening. The semicircular shell is buckled into the lower part of the machine head assembly. The bottom of the saw blade lower guard is provided with a plane that cooperates with the workbench, and the inner side of the saw blade lower guard is arc-shaped.

3. The multifunctional miter saw according to claim 1, wherein: The wing-spreading bracket includes a first support member and a second support member, the first support member is fixedly connected to one end of the second support member, the other end of the second support member is hinged to the mounting ear at the bottom of the wing-spreading platform, and the other end of the first support member is hinged to the base; when the wing-spreading platform is raised, the upper edge of the second support member forms a horizontal support for the wing-spreading platform; when the wing-spreading platform is folded and landed, the top of the second support member and the middle inner side of the first support member cooperate to form a horizontal support for the wing-spreading platform.

4. The multifunctional miter saw according to claim 3, wherein: An adjustment rod is provided in the middle of the inner side of the first support member, which is used for supporting and adjusting the horizontality of the wing platform when it is folded and landed; one end of the adjustment rod is arranged in the screw hole on the first support member, and the other end of the adjustment rod contacts the bottom of the wing platform.

5. The multifunctional miter saw according to claim 3, wherein: A plurality of reinforcing ribs are provided on the inner sides of the first support member and the second support member; a buffer pad is coated on the periphery of the connection portion between the first support member and the second support member; and the thickness of the first support member and the second support member decreases from the connection portion outward.

6. The multifunctional miter saw according to claim 1, wherein: The locking shaft is equipped with an elastic element between the locking hook and the mounting seat. The elastic element is a disc spring or a corrugated pad. The elastic element is used for the suspended positioning of the locking hook. The locking hook plate is a strip plate. The two ends of the strip plate are fixed to the mounting columns on the side of the machine head assembly by screws. The gap between the strip plate and the machine head assembly serves as a locking cavity.

7. The multifunctional miter saw according to claim 1, wherein: The locking shaft passes through the outer end of the locking handle to install a nut, and the nut is used to adjust the locking force between the locking hook and the locking hook plate.

8. The multifunctional miter saw according to claim 1, wherein: Wing table positioning components are installed on both sides of the folding wing locking component. The wing table positioning components include positioning pins and positioning pin holes. The positioning pins are installed at the bottom of the wing table, and the positioning pin holes are arranged on the side of the nose component.

9. The multifunctional miter saw according to claim 1, wherein: A front-end locking support assembly is provided between the front end of the workbench and the machine head assembly, and the front-end locking support assembly includes a workbench hook and a front-end locking piece. The lower end of the workbench hook is hinged to the front end of the workbench through a rotating shaft, and the front-end locking piece is provided at the front end of the machine head assembly, and the workbench hook can be rotated, folded and lifted around the rotating shaft; the front-end locking piece includes a locking hook groove and a locking structure, and the locking hook groove is provided on the machine head assembly, and the locking hook groove cooperates with the hook portion at the upper end of the workbench hook; the locking structure includes a locking button, a bolt, a spring and a locking nut, the bolt is provided in the mounting hole of the machine head assembly, a locking nut is installed at the inner end of the bolt, and a locking button is installed at the outer end of the bolt, and a spring is mounted on the outer periphery of the bolt between the locking nut and the mounting hole; when the workbench hook is raised, the rotating locking button can block the hook portion of the workbench hook in the hook groove.

10. The multifunctional miter saw according to claim 9, wherein: Two locking ribs are provided on the locking button at intervals, and a protrusion is provided on the head assembly, which cooperates with the locking rib to limit the locking button from rotating between the two locking ribs; the upper part of the workbench hook is a U-shaped structure, and the hook is installed at the upper ends of both sides of the U-shaped structure; when the locking button blocks the hook of the workbench hook in the hook groove, the bolt is located between the two sides of the U-shaped structure, and the locking button is located on the front side of the workbench hook; the locking hook groove is a trapezoidal opening, and the hook of the workbench hook is a trapezoidal block that cooperates with the trapezoidal opening.

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