Adjustable miter saw

Abstract

According to the adjustable miter saw, a first operation piece and a second operation piece are both located in an operation area, a user can conduct unified operation on the side close to the operation area, and use is convenient; the saw blade connecting piece can rotate relative to the rotating operation table, and the inclination angle between the saw blade and the base can be adjusted. According to the principle that extrusion force can be generated between the connecting rod with any inclination angle and the friction plate to generate friction force, the saw blade connecting piece can rotate to any angle to be locked, and the saw blade connecting piece can rotate to a specific angle to be locked through matching of the connecting rod with the preset inclination angle and the limiting hole with the preset interval angle. Therefore, the adjustable miter saw provided by the invention is convenient to operate by a user, and has an arbitrary inclination angle locking function and a specific inclination angle locking function at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of cutting tools, and in particular to an adjustable miter saw. Background Art

[0002] In the prior art, most miter saws provide users with predetermined miter cutting angles and tilt cutting angles, and these predetermined angles meet the angles commonly used in woodworking. In the existing miter saws, the common locking structures for the miter and tilt angles are conventional nuts and threaded rods that cooperate to achieve locking. Among them, the tilt angle locking rotating handle of some miter saws is located at the rear of the miter saw, which is inconvenient for users to operate; some miter saws only have an arbitrary angle locking function, but no fixed angle locking function; some miter saws have a fixed angle locking function, but the user needs to perform multiple actions to realize the function, which is quite cumbersome. Summary of the invention

[0003] In view of this, an embodiment of the present application provides an adjustable miter saw to solve at least one problem existing in the background technology.

[0004] The present application embodiment provides an adjustable miter saw, comprising:

[0005] Base;

[0006] A rotating operating table, mounted on the base;

[0007] A saw blade connecting member for mounting the saw blade of the miter saw; the saw blade connecting member comprises a saw blade connecting member body and a friction plate fixed inside the saw blade connecting member body; the saw blade connecting member body is provided with limiting holes with preset interval angles;

[0008] A connecting rod with any tilt angle, movably mounted inside the rotating operating table;

[0009] a first operating member;

[0010] A preset tilt angle connecting rod is movably mounted inside the rotating operating table;

[0011] a second operating member;

[0012] One end of the rotating operating table along the first direction has an operating area for user operation, and the first operating member and the second operating member are both located in the operating area; the other end of the rotating operating table along the first direction is connected to the saw blade connecting member body, and the saw blade connecting member body can be rotated and tilted relative to the rotating operating table to change the relative angle between the saw blade and the base; the friction plate extends along the rotation direction of the saw blade connecting member body;

[0013] One end of the arbitrary tilt angle connecting rod is connected to the first operating member, and the other end of the arbitrary tilt angle connecting rod can press the friction plate to limit the rotation of the saw blade connecting member body under the operation of the first operating member;

[0014] One end of the preset tilt angle connecting rod is connected to the second operating member, and the other end of the preset tilt angle connecting rod can be inserted into the limiting hole under the operation of the second operating member to limit the rotation of the saw blade connecting member body.

[0015] In an optional embodiment, the arbitrary tilt angle connecting rod comprises a connecting rod body and an extrusion piece fixed on the connecting rod body, and the extrusion piece is located on one side of the corresponding friction plate;

[0016] The first operating member can drive the connecting rod with any tilt angle to move, so that the extrusion member squeezes the friction plate.

[0017] In an optional embodiment, an arc-shaped through hole is provided on the friction plate, and a plurality of friction plates are arranged along the first direction. The connecting rod body passes through the through holes of the plurality of friction plates in sequence, and a plurality of extrusion parts are arranged along the first direction corresponding to the friction plates.

[0018] In an optional embodiment, adjacent friction plates are isolated by support columns;

[0019] The center of the extrusion piece has a mounting hole, and the extrusion pieces are sequentially sleeved on the connecting rod body through the mounting hole. The end of the connecting rod body is installed with a nut, and the nut is used to fix a plurality of the extrusion pieces on the connecting rod body.

[0020] In an optional embodiment, the first operating member is rotatably connected to the rotating operating table, and the first operating member is connected to the arbitrary inclination angle connecting rod via a first cam. The first operating member can drive the first cam to rotate to drive the arbitrary inclination angle connecting rod to reciprocate along the first direction, so that the arbitrary inclination angle connecting rod squeezes the friction plate or breaks away from contact with the friction plate.

[0021] In an optional embodiment, the miter saw further includes a return spring, wherein the return spring is sleeved on the arbitrary inclination angle connecting rod and the preset inclination angle connecting rod, the return spring provides elastic force for the arbitrary inclination angle connecting rod to disengage from the friction plate, and the return spring provides elastic force for the preset inclination angle connecting rod to disengage from the limiting hole.

[0022] In an optional embodiment, the second operating member is rotatably connected to the rotating operating table, and the second operating member is connected to the preset tilt angle connecting rod via a second cam. The second operating member can drive the second cam to rotate to drive the preset tilt angle connecting rod to reciprocate along the first direction, so that the preset tilt angle connecting rod is inserted into the limiting hole or disengaged from the limiting hole.

[0023] In an optional embodiment, the rotating operating table is rotatably connected to the base, the base has a locking plate extending along the rotating path of the rotating operating table, and the top of the locking plate has a plurality of preset card inlets at intervals of angles;

[0024] The miter saw also includes a third operating member, a limiting plate and a preset miter angle connecting rod, wherein the third operating member is located in the operating area, one end of the preset miter angle connecting rod is connected to the third operating member, and the other end is connected to the limiting plate, and the preset miter angle connecting rod can be rotated under the drive of the third operating member so that the limiting plate is inserted into the card entrance to limit the rotation of the rotating operating table relative to the base.

[0025] In an optional embodiment, the miter saw further comprises:

[0026] A pressing block is fixed to one end of the preset bevel angle connecting rod; the pressing block is connected to the third operating member, and when one end of the third operating member is pressed by an operator, the other end can squeeze the pressing block, so that the pressing block drives the preset bevel angle connecting rod to rotate;

[0027] A third cam, fixed to the preset bevel angle connecting rod, capable of rotating with the third operating member;

[0028] The cam contact piece is movably connected to the rotating operating table and can move under the drive of the third cam. The cam contact piece is connected to the limit piece. When the third cam rotates, the cam contact piece can drive the limit piece to move so as to be inserted into or disengaged from the insertion port.

[0029] In an optional embodiment, the miter saw further comprises a fourth operating member and an arbitrary miter angle connecting rod, wherein the arbitrary miter angle connecting rod is connected to the rotating operating table via a thread, and one side of the locking plate has a locking surface; the arbitrary miter angle connecting rod can rotate under the operation of the fourth operating member, and when the arbitrary miter angle connecting rod rotates, it moves along its own axial direction under the action of the thread, and when one end of the arbitrary miter angle connecting rod abuts against the locking surface, the rotating operating table is restricted from rotating relative to the base.

[0030] In an optional embodiment, the preset bevel angle connecting rod is hollow, and the preset bevel angle connecting rod is sleeved on the arbitrary bevel angle connecting rod.

[0031] The adjustable miter saw provided in the embodiment of the present application has a first operating member and a second operating member both located in the operating area, and the user can operate them uniformly on the side close to the operating area, which is convenient to use; the saw blade connecting member can rotate relative to the rotating operating table to achieve an adjustable inclination angle between the saw blade and the base. Through the principle that the extrusion force can be generated between the arbitrary inclination angle connecting rod and the friction plate to generate friction force, the saw blade connecting member can be rotated to any angle for locking, and through the cooperation of the preset inclination angle connecting rod and the preset limiting holes at the interval angle, the saw blade connecting member can be rotated to a specific angle for locking. Therefore, the miter saw provided in the embodiment of the present application is easy for the user to operate, and has both the arbitrary inclination angle locking function and the specific inclination angle locking function.

[0032] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 A schematic diagram of the structure of a miter saw provided in this embodiment;

[0035] Figure 2 A schematic diagram of the internal structure of the rotary operating table provided in this embodiment;

[0036] Figure 3 A schematic diagram of the connection relationship between the preset tilt angle connecting rod and the saw blade connecting member provided in an embodiment of the present application;

[0037] Figure 4 A schematic diagram of the connection relationship between the connecting rod with any tilt angle and the saw blade connecting member provided in the embodiment of the present application;

[0038] Figure 5 An exploded schematic diagram of the internal structure of a saw blade connecting member provided in an embodiment of the present application;

[0039] Figure 6 A schematic diagram of the base structure provided in an embodiment of the present application;

[0040] Figure 7 A schematic diagram of the contact relationship between the preset beveled angle connecting rod and the base provided in an embodiment of the present application;

[0041] Figure 8 A schematic diagram of the transmission relationship of the preset bevel angle connecting rod provided in an embodiment of the present application.

[0042] 1. Base; 11. Locking piece; 111. Card inlet; 112. Locking surface; 12. Dial;

[0043] 2. Rotating operating table; 21. Scale pointer;

[0044] 3. saw blade connecting part; 31. saw blade connecting part body; 32. friction plate; 33. support column; 34. nut; 311. limit hole; 321. through hole;

[0045] 4. Saw blade;

[0046] 5. Arbitrary tilt angle connecting rod; 50. Connecting rod body; 51. First operating member; 53. First cam; 52. Extrusion member;

[0047] 6. Preset tilt angle connecting rod; 61. Second operating member; 62. Second cam;

[0048] 7. Preset bevel angle connecting rod; 71. Third operating member; 72. Limiting piece; 73. Lower pressing block; 74. Third cam; 75. Cam contact piece; 76. Rotating shaft; 77. Rod limiting sleeve;

[0049] 8. Arbitrary bevel angle connecting rod; 81. Fourth operating member;

[0050] 9. Return spring. DETAILED DESCRIPTION

[0051] In order to make the technical solutions and beneficial effects of the present invention more clearly understandable, the following is a detailed description by listing specific embodiments. The drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0052] In the description of the present invention, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of simplified description of the present invention, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation to the present invention.

[0053] In the present invention, the terms "first" and "second" are only used for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present invention, "multiple" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present invention, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact with each other through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0056] In order to thoroughly understand the present application, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present application. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other implementation methods.

[0057] This embodiment provides an adjustable miter saw, such as Figure 1-Figure 4 As shown, it includes: a base 1, a rotating operating table 2, a saw blade connecting member 3, an arbitrary tilt angle connecting rod 5, a first operating member 51, a preset tilt angle connecting rod 6, and a second operating member 61. The saw blade connecting member 3 is used to install a saw blade 4 of a miter saw, that is, the tilt angle of the saw blade connecting member 3 determines the cutting angle that can be performed when the miter saw is tilted.

[0058] When the miter saw is in use, the base 1 is placed on the ground, and the rotating operating table 2 is installed on the base 1 for operation by the user. The saw blade connecting member 3 includes a saw blade connecting member body 31 and a friction plate 32 fixed inside the saw blade connecting member body 31; the saw blade connecting member body 31 is provided with limiting holes 311 with preset interval angles; the arbitrary tilt angle connecting rod 5 and the preset tilt angle connecting rod 6 can be movably installed inside the rotating operating table 2.

[0059] like Figure 1 , Figure 2 As shown, one end of the rotating operating table 2 along the first direction has an operating area for the user to operate, and the first operating member 51 and the second operating member 61 are both located in the operating area; the other end of the rotating operating table 2 along the first direction is connected to the saw blade connecting member body 31, and the saw blade connecting member body 31 can be rotated and tilted relative to the rotating operating table 2 to change the relative angle between the saw blade 4 and the base 1.

[0060] One end of the arbitrary tilt angle connecting rod 5 is connected to the first operating member 51, and the other end of the arbitrary tilt angle connecting rod 5 can squeeze the friction plate 32 to limit the rotation of the saw blade connecting member body 31 under the operation of the first operating member 51. The friction plate 32 extends along the rotation direction of the saw blade connecting member body 31, so that the saw blade connecting member body 31 can be locked when it is rotated to any angle.

[0061] One end of the preset tilt angle link 6 is connected to the second operating member 61, and the other end of the preset tilt angle link 6 can be inserted into the limiting hole 311 under the operation of the second operating member 61 to limit the rotation of the saw blade connecting member body 31, so that the saw blade connecting member body 31 can be locked when it rotates to a specific (preset) angle.

[0062] It can be understood that the friction plate 32 extends along the rotation direction of the saw blade connecting member body 31, and its function is to provide that when the saw blade connecting member body 31 rotates, a part of the friction plate 32 can always contact one end of the connecting rod 5 at any tilt angle, so as to lock the saw blade connecting member body 31 at any angle. The interval angle between adjacent limiting holes 311 is preset by the manufacturer, and the preset angle of each limiting hole 311 determines the angle at which the saw blade connecting member body 31 can be locked by the preset tilt angle connecting rod 6 when rotating. The angle described in this embodiment refers to the angle with the rotation axis of the saw blade connecting member body 31 as the center.

[0063] In an optional embodiment, if Figure 5 As shown, the arbitrary tilt angle connecting rod 5 includes a connecting rod body 50 and an extrusion member 52 fixed on the connecting rod body 50. Figure 2As shown, the first operating member 51 can drive the connecting rod 5 of any tilt angle to move, so that the extrusion member 52 squeezes the friction plate 32. In this embodiment, the friction force generated when the extrusion member 52 and the friction plate 32 are squeezed is used to limit the rotation of the friction plate 32, thereby limiting the rotation of the saw blade connecting member 3.

[0064] In an optional embodiment, if Figure 5 As shown, along the first direction, there are several friction plates 32, and the friction plates 32 are provided with arc-shaped through holes 321. The connecting rod body 50 is inserted into the through holes 321. The connecting rod 5 of any inclination angle passes through the through holes 321 of several friction plates 32 in sequence. The extrusion member 52 is located on the side of the corresponding friction plate 32 away from the first operating member 51. There are several extrusion members 52 arranged along the first direction corresponding to the friction plates 32. The provision of the through holes 321 can facilitate the passing of the connecting rod body 50 and the arrangement of multiple extrusion members 52, so that when the first operating member 51 is operated, the multiple extrusion members 52 move synchronously toward the direction close to the first operating member 51 to squeeze each friction plate 32, so that the friction forces of the multiple friction plates 32 and the extrusion members 52 are superimposed, providing a greater force on the saw blade connecting member 3.

[0065] In an optional embodiment, if Figure 5 As shown, adjacent friction plates 32 are separated by support columns 33; the center of the extrusion piece 52 has a mounting hole, and the extrusion piece 52 is sequentially sleeved on the connecting rod body 50 through the mounting hole, and the end of the connecting rod body 50 is installed with a nut 34, and the nut 34 is used to fix a plurality of extrusion pieces 52 on the connecting rod body 50. In this embodiment, the function of the support column 33 is to create a specific interval between adjacent friction plates 32 so that the extrusion piece 52 has enough space to squeeze the friction plate 32 or detach from the friction plate 32. The extrusion piece 52 is easy to install by being sleeved on the connecting rod body 50, and the end of the connecting rod body 50 is provided with a thread, and the installation of the nut 34 is matched to restrict the various extrusion pieces 52 sleeved on the connecting rod body 50 on the connecting rod body 50.

[0066] In an optional embodiment, if Figure 2 , Figure 4 As shown, the first operating member 51 is rotatably connected to the rotating operating table 2, and the first operating member 51 is connected to the arbitrary tilt angle connecting rod 5 through the first cam 53. The first operating member 51 can drive the first cam 53 to rotate to drive the arbitrary tilt angle connecting rod 5 to reciprocate along the first direction, so that the arbitrary tilt angle connecting rod 5 squeezes the friction plate 32 or breaks away from the contact with the friction plate 32. In this embodiment, the first cam 53 is used to drive the arbitrary tilt angle connecting rod 5. The characteristic of the cam is that it can drive the object to reciprocate along a straight line. In this embodiment, it can be realized that the arbitrary tilt angle connecting rod 5 can be driven to reciprocate along the first direction, so that the arbitrary tilt angle connecting rod 5 squeezes the friction plate 32 or breaks away from the contact with the friction plate 32.

[0067] In an optional embodiment, if Figure 2 As shown, the miter saw further includes a reset spring 9, which is sleeved on the arbitrary tilt angle link 5 and the preset tilt angle link 6. The reset spring 9 provides elastic force for the arbitrary tilt angle link 5 to disengage from the friction plate 32, and the reset spring 9 provides elastic force for the preset tilt angle link 6 to disengage from the limiting hole 311. In this embodiment, the reset spring 9 is used to assist the reset of the arbitrary tilt angle link 5 and the preset tilt angle link 6. The reset described in this embodiment refers to the position where the arbitrary tilt angle link 5 and the preset tilt angle link 6 do not constitute a limit to the rotation of the saw blade connecting member 3. It can be understood that the elastic force direction or elastic force size set by the reset spring 9 cannot push the arbitrary tilt angle link 5 or the preset tilt angle link 6 that is normally in the locking position of the saw blade connecting member 3. The action of the reset spring 9 must be that the operator operates the first operating member 51 or the second operating member 61, and the arbitrary tilt angle link 5 or the preset tilt angle link 6 has a certain position movement. At this time, the elastic force of the reset spring 9 can push the arbitrary tilt angle link 5 or the preset tilt angle link 6 to reset.

[0068] In an optional embodiment, if Figure 2 , Figure 3 As shown, the second operating member 61 is rotatably connected to the rotating operating table 2, and the second operating member 61 is connected to the preset tilt angle connecting rod 6 through the second cam 62. The second operating member 61 can drive the second cam 62 to rotate to drive the preset tilt angle connecting rod 6 to reciprocate along the first direction, so that the preset tilt angle connecting rod 6 is inserted into the limiting hole 311 or is separated from the limiting hole 311. In this embodiment, the second cam 62 is used to drive the preset tilt angle connecting rod 6. The characteristic of the cam is that it can drive the object to reciprocate along a straight line. In this embodiment, it can be realized that the preset tilt angle connecting rod 6 can be driven to reciprocate along the first direction, so that the preset tilt angle connecting rod 6 is inserted into the limiting hole 311 or is separated from the limiting hole 311.

[0069] In an optional embodiment, if Figure 1 As shown, in this embodiment, the first operating member 51 adopts a handle with a longer lever arm, which can easily apply a greater force so that the friction between the extrusion member 52 and the friction plate 32 is large enough; the second operating member 61 adopts a knob with a small size and easy operation, which can meet the preset tilt angle The required force for the connecting rod 6 to be inserted into the limiting hole 311 or to be separated from the limiting hole 311.

[0070] In an optional embodiment, if Figure 1 As shown, the rotating operating table 2 is rotatably connected to the base 1, as shown in FIG. Figure 6 As shown, the base 1 has a locking plate 11 extending along the rotation path of the rotating operating table 2, and the top of the locking plate 11 has a plurality of slots 111 with preset interval angles. Figure 7 , Figure 8 As shown, the miter saw also includes a third operating member 71, a limiting plate 72 and a preset miter angle connecting rod 7. The third operating member 71 is located in the operating area. One end of the preset miter angle connecting rod 7 is connected to the third operating member 71, and the other end is connected to the limiting plate 72. The preset miter angle connecting rod 7 can be rotated under the drive of the third operating member 71 so that the limiting plate 72 is inserted into the card entrance 111 to limit the rotation of the rotating operating table 2 relative to the base 1. In this embodiment, the base 1 is generally placed on the ground, so the rotating operating table 2 generally rotates in a horizontal plane when rotating. In this embodiment, the locking plate 11 provided on the base 1 and the limiting plate 72 matched therewith are used to realize the locking or unlocking of the rotating operating table 2 when rotating. It can be understood that when the limiting plate 72 is inserted into the card entrance 111, the rotating operating table 2 cannot rotate relative to the base 1, but can rotate otherwise. The angle of the position of the locking opening 111 is preset by the manufacturer, with the center of the rotating operating table 2 as the center of the circle. This angle determines the angle at which the rotating operating table 2 can be locked relative to the base 1, that is, determines the bevel angle of the miter saw.

[0071] In an optional embodiment, if Figure 8 As shown, the miter saw further includes: a pressing block 73, a third cam 74, and a cam contact piece 75. The pressing block 73 is fixed to one end of the preset miter angle connecting rod 7; the pressing block 73 is connected to the third operating member 71, and when one end of the third operating member 71 is pressed by an operator, the other end can squeeze the pressing block 73, so that the pressing block 73 drives the preset miter angle connecting rod 7 to rotate; the third cam 74 is fixed to the preset miter angle connecting rod 7, and can rotate with the third operating member 71; the cam contact piece 75 is movably connected to the rotating operating table 2, and can move under the drive of the third cam 74, and the cam contact piece 75 is connected to the limit piece 72; when the third cam 74 rotates, the cam contact piece 75 can drive the limit piece 72 to move so as to be inserted into or separated from the insertion port 111. In this embodiment, the operator presses one end of the third operating member 71 so that the other end can squeeze the lower pressing block 73, and then the lower pressing block 73 drives the preset bevel angle connecting rod 7 and the third cam 74 to rotate, so that the cam contact piece 75 can move up and down, so that the limit piece 72 can be inserted into or disengaged from the insertion port 111 as the cam contact piece 75 moves up and down.

[0072] In an optional embodiment, if Figure 7 , Figure 8 As shown, in order to facilitate the preset bevel angle connecting rod 7 to maintain stability during rotation, the rotating operating table 2 is provided with a pair of rod body limiting sleeves 77, and the two ends of the preset bevel angle connecting rod 7 are respectively installed in the two rod body limiting sleeves 77.

[0073] In an optional embodiment, if Figure 7 , Figure 8As shown, a rotating shaft 76 is provided at the bottom of the rotating operating table 2, and the third operating member 71 is connected to the rotating shaft 76, and the third operating member 71 can rotate around the rotating shaft 76. In this embodiment, the third operating member 71 forms a lever structure with the rotating shaft 76 as a fulcrum, which is convenient for transmitting the force of the operator's hand to the lower pressing block 73, thereby improving the convenience of operation.

[0074] In an optional embodiment, if Figure 7 , Figure 8 As shown, the miter saw further includes a fourth operating member 81 and an arbitrary miter angle connecting rod 8, and the arbitrary miter angle connecting rod 8 is connected to the rotating operating table 2 by threads, such as Figure 6 As shown, one side of the locking plate 11 has a locking surface 112; the arbitrary bevel angle connecting rod 8 can rotate under the operation of the fourth operating member 81, and the arbitrary bevel angle connecting rod 8 moves along its own axial direction under the action of the thread when rotating, and when one end of the arbitrary bevel angle connecting rod 8 abuts the locking surface 112, the rotation of the rotating operating table 2 relative to the base 1 is limited. In this embodiment, the locking surface 112 on one side of the locking plate 11 is used to operate the arbitrary bevel angle connecting rod 8 to move forward or backward along the thread, so that the end of the arbitrary bevel angle connecting rod 8 can press against the locking surface 112 or break away from the locking surface 112. When the end of the arbitrary bevel angle connecting rod 8 presses against the locking surface 112, the friction between the two can limit the rotation of the rotating operating table 2 relative to the base 1, and the locking surface 112 is continuous, so as to realize the locking of the rotating operating table 2 at any angle. Preferably, the thread on the rotating operating table 2 can be formed by fixing a nut inside.

[0075] In an optional embodiment, if Figure 7 , Figure 8 As shown, the preset bevel angle connecting rod 7 is hollow, and the preset bevel angle connecting rod 7 is sleeved on any bevel angle connecting rod 8. In this embodiment, the hollow design of the preset bevel angle connecting rod 7 can fully utilize the internal space of the rotating operating table 2 to avoid insufficient space required for components.

[0076] In an optional embodiment, if Figure 8 As shown, a dial 12 is provided on the base 1, and a scale pointer 21 is provided on the rotary operating table 2. When the operator operates the rotary operating table 2 to rotate, the specific angle can refer to the scale on the dial 12 that the scale pointer 21 is aligned with.

[0077] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the present application that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present application and do not limit the scope of protection of the patent of this application.

Claims

1. An adjustable miter saw, characterized in that: include: Base (1); A rotating operating table (2) is mounted on the base (1); A saw blade connecting member (3) for mounting a saw blade (4) of the miter saw; the saw blade connecting member (3) comprises a saw blade connecting member body (31) and a friction plate (32) fixed inside the saw blade connecting member body (31); the saw blade connecting member body (31) is provided with limiting holes (311) with preset interval angles; An arbitrary tilt angle connecting rod (5) is movably mounted inside the rotating operating table (2); A first operating member (51); A preset tilt angle connecting rod (6) movably mounted inside the rotating operating table (2); A second operating member (61); The rotating operating table (2) has an operating area for user operation at one end along the first direction, and the first operating member (51) and the second operating member (61) are both located in the operating area; the other end of the rotating operating table (2) along the first direction is connected to the saw blade connecting member body (31), and the saw blade connecting member body (31) can be rotated and tilted relative to the rotating operating table (2) to change the relative angle between the saw blade (4) and the base (1); the friction plate (32) extends along the rotation direction of the saw blade connecting member body (31); One end of the arbitrary tilt angle connecting rod (5) is connected to the first operating member (51), and the other end of the arbitrary tilt angle connecting rod (5) can press the friction plate (32) under the operation of the first operating member (51) to limit the rotation of the saw blade connecting member body (31); One end of the preset tilt angle connecting rod (6) is connected to the second operating member (61), and the other end of the preset tilt angle connecting rod (6) can be inserted into the limiting hole (311) under the operation of the second operating member (61) to limit the rotation of the saw blade connecting member body (31).

2. The adjustable miter saw according to claim 1, characterized in that The arbitrary tilt angle connecting rod (5) comprises a connecting rod body (50) and an extrusion piece (52) fixed on the connecting rod body (50), wherein the extrusion piece (52) is located on one side of the corresponding friction plate (32); The first operating member (51) can drive the arbitrary tilt angle connecting rod (5) to move, so that the extrusion member (52) squeezes the friction plate (32).

3. The adjustable miter saw according to claim 2, characterized in that The friction plate (32) is provided with an arc-shaped through hole (321); along the first direction, the friction plates (32) are arranged in a plurality of pieces; the connecting rod body (50) passes through the through holes (321) of the plurality of friction plates (32) in sequence; and along the first direction, a plurality of extrusion members (52) are arranged corresponding to the friction plates (32).

4. The adjustable miter saw according to claim 3, characterized in that: Adjacent friction plates (32) are isolated by support columns (33); The center of the extruded piece (52) has a mounting hole, and the extruded pieces (52) are sequentially sleeved on the connecting rod body (50) through the mounting hole. A nut (34) is installed at the end of the connecting rod body (50), and the nut (34) is used to fix a plurality of the extruded pieces (52) on the connecting rod body (50).

5. The adjustable miter saw according to any one of claims 1 to 4, characterized in that: The first operating member (51) is rotatably connected to the rotating operating platform (2); the first operating member (51) is connected to the arbitrary tilt angle connecting rod (5) via a first cam (53); the first operating member (51) can drive the first cam (53) to rotate to drive the arbitrary tilt angle connecting rod (5) to reciprocate along the first direction, so that the arbitrary tilt angle connecting rod (5) squeezes the friction plate (32) or breaks away from contact with the friction plate (32).

6. The adjustable miter saw according to any one of claims 1 to 4, characterized in that: The miter saw further comprises a return spring (9), wherein the return spring (9) is sleeved on the arbitrary tilt angle connecting rod (5) and the preset tilt angle connecting rod (6), and the return spring (9) provides an elastic force for the arbitrary tilt angle connecting rod (5) to separate from the friction plate (32), and the return spring (9) provides an elastic force for the preset tilt angle connecting rod (6) to separate from the limiting hole (311).

7. The adjustable miter saw according to any one of claims 1 to 4, characterized in that: The second operating member (61) is rotatably connected to the rotating operating platform (2); the second operating member (61) is connected to the preset tilt angle connecting rod (6) via a second cam (62); the second operating member (61) can drive the second cam (62) to rotate to drive the preset tilt angle connecting rod (6) to reciprocate along the first direction, so that the preset tilt angle connecting rod (6) is inserted into the limiting hole (311) or disengaged from the limiting hole (311).

8. The adjustable miter saw according to claim 1, wherein: The rotating operating table (2) is rotatably connected to the base (1); the base (1) has a locking piece (11) extending along the rotating path of the rotating operating table (2); the top of the locking piece (11) has a plurality of locking openings (111) with preset interval angles; The miter saw further comprises a third operating member (71), a limiting plate (72) and a preset miter angle connecting rod (7); the third operating member (71) is located in the operating area; one end of the preset miter angle connecting rod (7) is connected to the third operating member (71) and the other end is connected to the limiting plate (72); the preset miter angle connecting rod (7) can be rotated under the drive of the third operating member (71) so that the limiting plate (72) is clamped into the clamping entrance (111) to limit the rotation of the rotating operating table (2) relative to the base (1).

9. The adjustable miter saw according to claim 8, characterized in that The miter saw also includes: A lower pressing block (73) is fixed to one end of the preset bevel angle connecting rod (7); the lower pressing block (73) is connected to the third operating member (71); when one end of the third operating member (71) is pressed by an operator, the other end can squeeze the lower pressing block (73), so that the lower pressing block (73) drives the preset bevel angle connecting rod (7) to rotate; A third cam (74) is fixed to the preset bevel angle connecting rod (7) and is capable of rotating along with the third operating member (71); A cam contact piece (75) is movably connected to the rotating operating table (2) and can move under the drive of the third cam (74). The cam contact piece (75) is connected to the limiting piece (72). When the third cam (74) rotates, the cam contact piece (75) can drive the limiting piece (72) to move so as to be inserted into the insertion opening (111) or to be disengaged from the insertion opening (111).

10. The adjustable miter saw according to claim 8 or 9, characterized in that The miter saw further comprises a fourth operating member (81) and an arbitrary miter angle connecting rod (8), wherein the arbitrary miter angle connecting rod (8) is connected to the rotating operating table (2) via a thread, and one side of the locking plate (11) has a locking surface (112); the arbitrary miter angle connecting rod (8) can rotate under the operation of the fourth operating member (81), and when the arbitrary miter angle connecting rod (8) rotates, it moves along its own axial direction under the action of the thread, and when one end of the arbitrary miter angle connecting rod (8) abuts against the locking surface (112), the rotating operating table (2) is restricted from rotating relative to the base (1).

11. The adjustable miter saw according to claim 10, wherein: The preset bevel angle connecting rod (7) is hollow, and the preset bevel angle connecting rod (7) is sleeved on the arbitrary bevel angle connecting rod (8).

Images