Bench saw

Abstract

The utility model relates to a bench saw which comprises a base (12), a workbench (14), a front side wall (15), a saw blade supporting assembly (20) and two limiting assemblies, wherein the saw blade supporting assembly (20) can rotate relative to a vertical plane together with a saw blade so as to change the inclination angle of the saw blade (10) between the minimum value smaller than 0 degree and the maximum value larger than 45 degrees, and the two limiting assemblies correspond to the minimum value and the maximum value respectively. Each limiting assembly comprises a positioning block (66 and 96) fixed to the saw blade supporting assembly, a fixed component (62 and 92) fixed to the front side wall and a movable component (64 and 94) connected with the fixed component, and the movable component is provided with a default position where the movable component is connected with the positioning block and stops the positioning block from moving in the direction of the inclination angle smaller than 0 degree or larger than 45 degrees. The movable member allows the positioning block to move to a minimum or maximum inclination angle when moved away from the default position.

Description

Technical Field

[0001] The present application relates to a table saw. Background Art

[0002] Table saws are commonly used electric working equipment in many industries such as construction and wood. When cutting a workpiece with a table saw, the height of the saw blade relative to the workpiece and the inclination angle relative to the vertical plane affect the quality of the cutting operation, such as the cutting depth into the workpiece and the angle of the cut. Therefore, table saws are usually provided with height and angle adjustment devices for adjusting the height and inclination angle of the saw blade.

[0003] In order to meet most of the work requirements or applications, and due to the limitations of various aspects of the table saw (such as structure or size), the table saw is usually designed to change the inclination angle of the saw blade between 0 and 45 degrees. For the most commonly used inclination angles of 0 and 45 degrees, the table saw may include a quick positioning device for quickly positioning the saw blade to these two inclination angles.

[0004] However, in practical applications, it is sometimes necessary to place the saw blade of the table saw at an angle less than 0 degrees (e.g., -2 degrees) or greater than 45 degrees (e.g., 47 degrees) to perform cutting operations. Existing table saws usually cannot achieve this function, at least not conveniently. Utility Model Content

[0005] The purpose of the present application is to improve the structure of a table saw so as to conveniently achieve a saw blade tilt angle adjustment range with a minimum value less than 0 degrees (eg, -2 degrees) and a maximum value greater than 45 degrees (eg, 47 degrees).

[0006] To this end, the present application provides a table saw, comprising: a base; a work table arranged above the base, the work table having a saw blade slot extending in the front-to-back direction to allow a saw blade to extend out; a front side wall extending downward from the work table; and a saw blade support assembly located below the work table, the saw blade support assembly being configured to be able to rotate together with the supported saw blade around a central axis extending in the front-to-back direction to change an inclination angle of the saw blade relative to a vertical plane containing the front-to-back direction, the inclination angle having a minimum value less than 0 degrees and a maximum value greater than 45 degrees;

[0007] The invention also includes: a first limit assembly and a second limit assembly corresponding to the minimum value and the maximum value respectively, each limit assembly includes: a positioning block fixed to the saw blade support assembly to rotate therewith, a fixed component fixed to the front side wall, and a movable component engaged with the fixed component and accessible to and operated by an operator, wherein for each limit assembly:

[0008] The movable member has a default position relative to the fixed member, in which the movable member is engaged with the positioning block and the saw blade is at an inclination angle of 0 degrees or 45 degrees, and the movable member blocks the positioning block from moving in a direction of an inclination angle less than 0 degrees or greater than 45 degrees; and

[0009] When the movable component is moved away from the default position by the operator, the movable component allows the positioning block to move to the minimum or maximum tilt angle.

[0010] In one embodiment, when the movable component of each limiting assembly is moved away from the default position, the movable component is disengaged from the positioning block.

[0011] In one embodiment, the movable component of each limiting assembly is movable relative to the fixed component, and the movement is translation and / or rotation.

[0012] In one embodiment, each of the limiting assemblies further includes a restoring element associated with both the fixed component and the movable component to keep the movable component in a default position.

[0013] In one embodiment, the movable member of each limiting assembly is pivotally attached to the fixed member about an axis and comprises a stopper engaged with the corresponding positioning block when in the default position.

[0014] In one embodiment, the movable component of each limiting assembly also includes an additional stop portion that engages with the corresponding positioning block when the inclination angle is equal to the minimum value or the maximum value and blocks the corresponding positioning block from further moving toward an inclination angle less than the minimum value or greater than the maximum value.

[0015] In one embodiment, the stop portion and / or the additional stop portion of each limiting assembly is provided by an integral part of the movable component or an additional element attached to the movable component.

[0016] In one embodiment, the fixed component of each limiting assembly is a groove-shaped member fixed to the front side wall and includes a bottom wall and two side walls, the movable component includes an arm installed around a pivot supported by the two side walls and a bolt connected to the arm, the bolt head of the bolt serves as the stopper, and the reset element is a spring mounted on the pivot.

[0017] In one embodiment, the saw blade further comprises a height adjustment device configured to adjust the height of the saw blade and an angle adjustment device configured to adjust the inclination angle of the saw blade, wherein the height adjustment device comprises a rotating shaft extending through an arc-shaped slot formed on the front side wall.

[0018] The saw blade support assembly includes a bracket and a motor assembly supported by the bracket, and the height adjustment device is provided in association with both the motor assembly and the bracket;

[0019] Wherein, the angle adjustment device includes: the first limit assembly and the second limit assembly, a handle attached to the protruding end of the rotating shaft, which is configured to lock the saw blade at its inclination angle when operated by an operator; and an indicator for indicating the inclination angle of the saw blade, wherein the positioning block of each limit assembly and the indicator are fixed to the bracket of the saw blade support assembly.

[0020] In one embodiment, it also includes a lining wall on the outside of the front side wall, the lining wall includes a lining wall arc groove corresponding to the arc groove on the front side wall, and each limiting assembly is arranged on the outside of the front side wall so that an operator can operate the movable component through the lining wall arc groove.

[0021] In one embodiment, the minimum value is -2 degrees and the maximum value is 47 degrees.

[0022] According to the table saw of the present application, two limit assemblies for minimum and maximum values ​​are provided, each of which includes: a positioning block fixed to the saw blade support assembly to rotate therewith, a fixed member fixed to the front side wall, and a movable member engaged with the fixed member and accessible and operable by the operator. For each limit assembly: the movable member has a default position relative to the fixed member, in which the movable member is engaged with the positioning block and the saw blade is at an inclination angle of 0 degrees or 45 degrees, and the movable member blocks the positioning block from moving in a direction of an inclination angle less than 0 degrees or greater than 45 degrees; and when the movable member is moved away from the default position by the operator, the movable member allows the positioning block to move to the minimum or maximum inclination angle. The table saw structure provides the function of quickly positioning the saw blade to an inclination angle of 0 degrees and 45 degrees, and the operator can simply move the movable member of the corresponding limit assembly to allow the inclination angle of the saw blade to continue to change to a minimum value less than 0 degrees or a maximum value greater than 45 degrees. The table saw has a simple structure and is easy to operate. When the inclination angle of the saw blade needs to be adjusted to an angle less than 0 degrees or greater than 45 degrees, it can be achieved without using any auxiliary tools, removing or loosening any parts of the table saw, and of course without any reinstallation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constitute part of the specification and are used to explain the principles of the present application and provide a further understanding of the above and other features and advantages of the present application, but do not limit the scope of protection. In the accompanying drawings:

[0024] Figure 1It is a schematic diagram of the overall appearance of the table saw of the present application.

[0025] Figure 2 This is a diagram of the internal structure of the table saw with the base removed.

[0026] Figure 3 It is the internal structure of the table saw after the base and work table are removed;

[0027] Figure 3a yes Figure 3 A partial enlarged view of the first limit assembly is specifically illustrated.

[0028] Figure 4 and 5 yes Figure 3 Views from different angles. DETAILED DESCRIPTION

[0029] The exemplary embodiments of the present application are described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the embodiments shown in the accompanying drawings and described herein are only exemplary embodiments that can implement the principles of the present application, rather than all embodiments. They are only used to illustrate the principles of the present application and are not intended to limit the scope of protection of the present application.

[0030] refer to Figure 1 and 2 The table saw includes a base 12, a workbench 14 mounted on the base 12, a circular saw blade 10 (in Figure 3-5 14) can extend upward through a saw blade slot 16 extending in the front-rear direction A on the workbench 14. As shown, the base 12 can be in the form of a box body that is open upward, or can also be in the form of a bracket with multiple (e.g., four) legs.

[0031] The table saw also includes a front side wall 15 extending downwardly from the work table 14 and having an arcuate slot 19 (at Figure 2 ), which can be attached or fixed to the base 12 or the workbench 14. The table saw also includes a lining wall 18 disposed outside the front side wall 15 and generally made of a plastic material, the lining wall 18 being formed with a lining wall arc groove 11 corresponding to the arc groove 19, and having a numerical mark 13 for indicating the tilt angle of the saw blade 10. The tilt angle refers to the tilt angle of the saw blade 10 (for example, Figure 3 The angle of the saw blade surface 17 (marked in FIG. 1 ) relative to the vertical plane in which the extension direction of the saw blade groove 16 (ie, the front-to-back direction A) is located.

[0032] In the present application, directional terms include an up-down direction T defining opposite "up" and "down" and a front-back direction A defining opposite "front" and "rear", the front-back direction A being perpendicular to the up-down direction T. These directions refer to Figure 1 In the present application, the up-down direction T may be a vertical direction.

[0033] A saw blade support assembly 20 for supporting the saw blade 10 is disposed inside the base 12 and below the workbench 14. Figure 3 , 4 5. In general, the saw blade support assembly 20 is supported by the workbench 14 (optionally, by the base 12) and is configured to be rotatable together with the saw blade 10 supported by it around a rotation axis extending in the front-rear direction A to achieve the purpose of changing the above-mentioned tilt angle of the saw blade 10.

[0034] Specifically, in the illustrated exemplary, non-limiting embodiment, the saw blade support assembly 20 includes a bracket 32, a motor mounting plate 34 attached to the bracket 32, a motor assembly 36 mounted to the motor mounting plate 34 and including a motor, and the saw blade 10 is attached to the output end of the motor to be driven by the motor to rotate during use. The motor mounting plate 34 is attached to a support rod or shaft 38 defining the above-mentioned rotation axis, and both ends of the support rod 38 are supported by fixed seats 24 and 26 attached to a stationary base 12 or a workbench 14, respectively, and extend into their arc-shaped grooves 21 and 23, so that the entire saw blade support assembly 20 and the saw blade 10 are supported by the fixed seats 22 and 24 and can rotate together around the rotation axis defined by the support rod 38 to change the tilt angle of the saw blade 10.

[0035] The table saw further includes a height adjustment device 40 associated with the saw blade support assembly 20 (specifically, the motor assembly 36 thereof) and the front side wall 15 for adjusting the height of the saw blade 10 in the up-down direction T, and an angle adjustment device 50 associated with the saw blade support assembly 20 (specifically, the bracket 32 ​​thereof) and the front side wall 15 for adjusting the above-mentioned inclination angle of the saw blade 10. The height adjustment device 40 and the angle adjustment device 50 respectively have a height adjustment operating component (e.g., a height adjustment operating component) located outside the front side wall 15 (and the lining wall 18) for being operated by an operator. Figure 1 The height adjustment device 40 includes a rotating shaft 42 extending from the saw blade support assembly 20 inside the base 12 through the arc-shaped slots 19 and 11 on the front side wall 15 and the lining wall 18, and the handwheel 41 is mounted or attached to the rotating shaft 42. As shown, the handle 51 of the angle adjustment device 50 can also be mounted or attached to the rotating shaft 42, but the present application is not limited thereto.

[0036] refer to Figure 4 and 5In general, the height adjustment device 40 includes the hand wheel 41, the rotating shaft 42, and a driven shaft 44 attached to the motor assembly 36. The rotating shaft 42 and the driven shaft 44 are engaged through a bevel gear pair G, so that when the operator turns the hand wheel 41 to rotate the rotating shaft 42, the driven shaft 44 is driven to rotate. The driven shaft 44 and the motor assembly 36 can respectively include an external thread and an internal thread that engage with each other, so that when the driven shaft 44 is rotated, the motor assembly 36 translates relative to the workbench 14 along the extension direction of the driven shaft 44 (i.e., along the up-down direction T shown in the figure), thereby achieving height adjustment of the saw blade 10.

[0037] According to the present application, the angle adjustment device 50 of the table saw is configured to adjust the inclination angle of the saw blade 10 relative to the vertical plane, so that it varies between a minimum value less than 0 degrees and a maximum value greater than 45 degrees, including the minimum value and the maximum value. In one embodiment, the minimum value may be, but is not limited to, -2 degrees. In one embodiment, the maximum value may be, but is not limited to, 47 degrees.

[0038] In the illustrated example, the angle adjustment device 50 includes the handle 51, a first stopper assembly 60a and a second stopper assembly 60b corresponding to the minimum and maximum values, respectively, and an indicator or pointer 75 for indicating the inclination angle of the saw blade 10. Each stopper assembly includes a stopper subassembly attached to the front side wall and including a fixed member and a movable member that can move relative to each other, and a positioning block cooperating with the stopper subassembly. The stopper subassembly of the first stopper assembly 60a is close to the first end 19a ( Figure 1 and 2 The left end portion of the arc groove 19 is arranged, specifically fixed to the front side wall 15 at the upper left side of the first end 19a of the arc groove 19; the stopper subassembly of the second limiting assembly 60b is close to the second end 19b ( Figure 1 and 2 The right end portion of the arc-shaped groove 19 is arranged, specifically, it is fixed to the front side wall 15 at a position on the upper right side of the second end 19b opposite to the arc-shaped groove 19.

[0039] Reference below Figure 3 , 4 5 (for clarity, the base 12, the front side wall 15, the workbench 14, and a portion of the second stop assembly 60b are hidden in the figure) and Figure 3a The partially enlarged view of FIG. 1 describes the first limiting component 60 a in detail.

[0040] The first stop assembly 60a includes a fixed member 62 fixed to the front side wall 15, a movable member 64 engaged with the fixed member 62 and capable of moving relative thereto, and a positioning block 66 configured to be capable of engaging and disengaging with the movable member 64 and fixed to the saw blade support assembly 20. The fixed member 62 and the movable member 64 constitute the above-mentioned stop subassembly of the first stop assembly 60a. The positioning block 66 can be directly attached or fixed to the bracket 32 ​​of the saw blade support assembly 20, or as shown in the figure, via the intermediate plate 33 ( Figure 3 ) is fixed to the bracket 32.

[0041] The movable member 64 of the first limiting assembly 60a has a default position shown in the drawings and includes a stopper portion ( Figure 3a In this default position, the stopper of the movable member 64 engages with the positioning block 66, and the inclination angle of the saw blade 10 is 0 degrees (see Figure 1 ). In this default position, the stopper of the movable member 64 blocks the positioning block 66 (the saw blade support assembly 20 attached to the positioning block 66, and the saw blade 10 supported by it) from rotating clockwise around the rotation axis defined by the support rod 38, or in other words, prevents the saw blade 10 from moving in a direction less than 0 degrees in the tilt angle, but the positioning block 66, the saw blade support assembly 20 and the saw blade 10 can move in a direction (towards 45 degrees) to increase the tilt angle (or rotate counterclockwise). The movable member 64 of the first limiting assembly 60a is configured to be movable relative to the fixed member 62 so that its stopper is disengaged from the positioning block 66, at which time the positioning block 66 (together with the saw blade support assembly 20 attached to the positioning block 66, and the saw blade 10 supported by it) can rotate clockwise around the rotation axis, or in other words, the tilt angle of the saw blade 10 is allowed to be reduced to any angle value between 0 degrees and the minimum value. During this process, the operator can operate the handle 51 according to the indication of the indicator 75 when the inclination angle of the saw blade 10 reaches the expected angle to lock (lock the saw blade support assembly 20 and) the saw blade 10 at the inclination angle.

[0042] As described above, the movable member 64 of the first limiting assembly 60a is movable relative to the fixed member 62, providing a default position for the movable member 64 to engage with the positioning block 66 and block the positioning block 66 from moving in a direction where the inclination angle decreases to less than 0 degrees, and providing a function of reducing the inclination angle of the saw blade to the minimum value by selectively moving the movable member 64 away from the default position relative to the fixed member 62. As long as this principle can be realized, the present application does not limit the way in which the movable member 64 moves relative to the fixed member 62. According to the structure of the specific limiting assembly, this movement can be achieved by translation and / or rotation, that is, the movable member 64 can be designed to translate and / or rotate relative to the fixed member 62.

[0043] The accompanying drawings show an example in which the movable member 64 can rotate relative to the fixed member 62, for example, pivot about an axis. Figure 3 , 4 and 5 views and Figure 3a Magnified image of .

[0044] The present application does not limit the structure of the fixed member 62, and it can be fixed to the front side wall 15 by any means known in the art, such as, but not limited to, the bolt connection, welding, riveting, form-fit connection, etc. shown in the figure. In the example shown in the figure, the fixed member 62 is in the form of a channel-shaped member shown in the figure, having a bottom wall 61 and a pair of opposite side walls 63 extending from the bottom wall 61, and a pivot 65 supported by two side walls 63. The movable member 64 includes an arm 86 and a bolt 88 connected to the arm 86. The arm 86 is formed with a hole allowing the pivot 65 to pass through, so that the arm 86 (and thus the entire movable member 64) can pivot relative to the fixed member 62 around the axis defined by the pivot 65. The spring 68 is sleeved on the pivot 65 and acts between the arm 86 and the fixed member 62 (one of the side walls 63).

[0045] In this structure, the bolt head 71 of the bolt 88 is used as a stopper engaged with the positioning block 66 when the movable member 64 is in the default position, and the nut 73 is used to fasten the bolt 88 to the arm 86. The spring 68 provides an elastic force to keep the movable member 64 in the default position relative to the fixed member 62, and serves as a reset element to provide a restoring force to restore the movable member 64 to the default position when the movable member 64 is moved away from the default position. The reset element can be any elastic element that can achieve the above function, and is not limited to a spring.

[0046] Based on the configuration shown in the drawings, the movable member 64 (e.g., its arm 86 or bolt 88) may further include an additional stopper, for example, which is configured to engage with the positioning block 66 when the inclination angle of the saw blade 10 is at the above-mentioned minimum value, so as to achieve rapid positioning of the inclination angle of the saw blade 10 at the minimum value. As an example, the nut 73 may have an outer contour larger than that of the bolt head 71, so that similar to the above-mentioned stopper (bolt head 71) for rapid positioning at an inclination angle of 0 degrees, this additional stopper is used for rapid positioning when the inclination angle is at the minimum value.

[0047] Although the drawings only show an exemplary structure in which the movable member 64 pivots relative to the fixed member 62, those skilled in the art can imagine any other structure or configuration that can realize the pivoting of the movable member 64 relative to the fixed member 62. As described above, those skilled in the art can also use a structure in which the movable member 64 translates relative to the fixed member 62 to configure or realize the stopper subassembly of the first limit assembly 60a, provided that the same function can be realized.

[0048] According to the principles of the present application, the second stop assembly 60b can have a structure or arrangement that is substantially symmetrical with the first stop assembly 60a. In short, similar to the first stop assembly 60a, the second stop assembly 60b includes a fixed member 92, a movable member 94 and a positioning block 96, and the fixed member 92 and the movable member 94 constitute a stopper subassembly of the second stop assembly 60b. When the movable member 94 is in the default position, the movable member 94 is engaged with the positioning block 96 and the inclination angle of the saw blade 10 is 45 degrees, and the movable member 94 blocks the positioning block 96, the saw blade support assembly 20 attached to the positioning block 96, and the saw blade 10 supported by it from rotating counterclockwise around the rotation axis defined by the support rod 38, or prevents the saw blade 10 from moving in a direction greater than 45 degrees in the inclination angle, but does not block the positioning block 96, the saw blade support assembly 20 and the saw blade 10 from moving in a direction (towards 0 degrees) in which the inclination angle decreases (or rotating clockwise). The movable member 94 of the second position-limiting assembly 60b is configured to be movable relative to the fixed member 92 so as to disengage from the positioning block 96, at which time the positioning block 96 (together with the saw blade support assembly 20 attached to the positioning block 96, and the saw blade 10 supported by it) is allowed to rotate counterclockwise, or in other words, the inclination angle of the saw blade 10 is allowed to increase, for example, to reach a maximum value. In this process, the operator can operate the handle 51 to lock the saw blade 10 at the inclination angle according to the indication of the indicator 75 when the inclination angle of the saw blade 10 reaches the expected angle. For other aspects and details of the second position-limiting assembly 60b, please refer to the first position-limiting assembly 60a above, which will not be repeated here.

[0049] By using the angle adjustment device 50 described above, in actual application, when the inclination angle of the table saw blade 10 is required to be not less than 0 degrees and not more than 45 degrees, the reset elements of each limit assembly keep their respective movable components in the default position. The operator can operate the angle adjustment device 50 (such as the operating handle 51) to rotate the entire saw blade support assembly 20 and the saw blade 10 together around the rotation axis of the support rod 38 shown in the figure, and at the same time, the positioning blocks 66, 96 of each limit assembly move along the arc groove 19 of the front side wall 15 (and the arc groove 11 of the lining wall 18), and the saw blade 10 can be placed at any inclination angle between 0 degrees and 45 degrees; or the saw blade can be quickly positioned at an inclination angle of 0 degrees or 45 degrees in which the stopper portion of the movable component of the first or second limit assembly engages with the corresponding positioning block. When the inclination angle of the table saw blade 10 is required to be less than 0 degrees, (for example, but not necessarily) the operator can first place the positioning block 66 in engagement with the stopper of the movable member 64 of the first limiting assembly 60a (the inclination angle is 0 degrees at this time). Next, the operator operates the movable member 64 of the first limiting assembly 60a to pivot relative to the fixed member 62, so that its stopper no longer blocks the positioning block 66 from rotating clockwise (moving leftward), and the inclination angle of the saw blade 10 decreases until the indicator 75 indicates that the saw blade 10 has reached the expected inclination angle. Finally, the operator operates the handle 51 to lock or fix the saw blade 10 at the expected inclination angle. When the inclination angle of the table saw blade 10 is required to be greater than 45 degrees, (for example, but not necessarily) the operator can first place the positioning block 96 in engagement with the stopper of the movable member 94 of the second limiting assembly 60b (the inclination angle is 45 degrees at this time). Next, the operator operates the movable member 94 of the second stop assembly 60b to pivot relative to the fixed member 92, thereby allowing the positioning block 96 to rotate counterclockwise (move rightward), and the inclination angle of the saw blade 10 increases until the indicator 75 indicates that the saw blade 10 has reached the expected inclination angle. Finally, the operator operates the handle 51 to lock or fix the saw blade 10 at the expected inclination angle.

[0050] As mentioned above, the table saw of the present application can achieve an adjustment range of the saw blade 10 tilt angle with a minimum value less than 0 degrees and a maximum value greater than 45 degrees. Figure 1 and 2As shown, the first limit assembly 60a and the second limit assembly 60b of the angle adjustment device 50 are installed on the outside of the front side wall 15, and at least a part of the movable component of each limit assembly is visible, accessible and operable through the arc groove 11 of the lining wall 18. This structure realizes the convenience of table saw operation. The operator only needs to gently move the exposed part of the movable component to achieve the separation of the movable component from the corresponding positioning block, and then the inclination angle of the saw blade 10 can be adjusted to an angle less than 0 degrees (or greater than 45 degrees). This structure is easy to operate, does not require the use of any tools, and does not require the removal and reinstallation of any components.

[0051] Applicant also envisions variations from the exemplary details shown.

[0052] For example, although the stopper of the movable member of each limiting assembly shown in the figure is the bolt head of the bolt connected to the arm of the movable member, the present application is not limited to this, and any structure that can engage with the positioning block and can prevent the positioning block from further moving or rotating can be used. In some embodiments, the bolt can be replaced by a columnar member or part fixed to the arm or integrated with the arm, and the stopper can be the end of the columnar member or part or a protrusion extending therefrom. Optionally, in the case where the above functions can be achieved, the stopper can be any form of protrusion extending from any part of the movable member.

[0053] Although the additional stopper for quickly positioning the saw blade to the maximum and minimum values ​​of the tilt angle is not shown in the figure, the applicant has envisioned that each limit assembly can include an additional stopper, and like the stopper, the additional stopper can be an additional component attached to the movable member (such as a nut 73 with an enlarged outer profile) or an integrally formed protrusion. For example, the stopper and the additional stopper are two protrusions extending from the arm.

[0054] Although in the illustrated embodiment, the indicator 75 is arranged together with the positioning block 66 of the first position-limiting assembly 60a, the indicator 75 can be arranged together with the positioning block 96 of the second position-limiting assembly 60b, or each can be arranged independently. Although the structures of the positioning blocks 66 and 96 in the figure are not completely the same, according to the principles of the present application, the two positioning blocks can have the same structure, or can have any possible structure or arrangement respectively.

[0055] Although in the illustrated embodiment, the movable component of each limit assembly is disengaged from the corresponding positioning block when it is moved away from the default position to achieve the purpose of no longer blocking, the present application is not limited thereto, as long as the movable component no longer blocks the movement of the positioning block when an external force is applied by the operator.

[0056] According to the principles of the present application, the present application does not limit the method for locking or fixing the tilt angle of the saw blade 10. In some embodiments, this can be achieved by the operator rotating or pressing the handle 51 to abut and fix the sleeve portion 53 integral with the handle 51 through the arc-shaped groove 11 on the lining wall 18 to the front side wall 15. This locking or fixing can also be achieved in any other possible manner.

[0057] Some exemplary embodiments that can implement the present application are described in detail above with reference to the accompanying drawings. The above description and the accompanying drawings are only for explanation and illustration purposes, and the scope of protection of the present application is limited only by the claims. Modifications, equivalent replacements and improvements made to the structural details by those skilled in the art after reading the present application are all included in the scope of protection of the present application.

Claims

1. A table saw comprising: Base (12); A workbench (14) disposed above the base (12) has a saw blade slot (16) extending in a front-to-rear direction (A) to allow the saw blade (10) to extend; A front side wall (15) extending downward from the workbench (14); and A saw blade support assembly (20) located below the workbench (14), configured to be rotatable together with the supported saw blade about a central axis extending in the front-rear direction (A) to change the inclination angle of the saw blade (10) relative to a vertical plane containing the front-rear direction (A), wherein the inclination angle has a minimum value less than 0 degrees and a maximum value greater than 45 degrees; The invention is characterized in that it also comprises: a first limit assembly (60a) and a second limit assembly (60b) respectively corresponding to the minimum value and the maximum value, each limit assembly respectively comprising: a positioning block (66, 96) fixed to the saw blade support assembly (20) so as to rotate therewith, a fixed component (62, 92) fixed to the front side wall (15), and a movable component (64, 94) engaged with the fixed component and accessible to and operated by an operator, wherein for each limit assembly: The movable member (64, 94) has a default position relative to the fixed member, in which the movable member is engaged with the positioning block and the saw blade is at an inclination angle of 0 degrees or 45 degrees, and the movable member blocks the positioning block from moving in a direction of an inclination angle less than 0 degrees or greater than 45 degrees; and When the movable member (64, 94) is moved away from the default position by an operator, the movable member allows the positioning block to move to the minimum or maximum tilt angle.

2. The table saw according to claim 1, characterized in that: When the movable component (64, 94) of each limiting assembly is moved away from the default position, the movable component is disengaged from the positioning block (66, 96).

3. The table saw according to claim 2, characterized in that: The movable component (64, 94) of each limiting assembly is movable relative to the fixed component (62, 92), and the movement is translation and / or rotation.

4. The table saw according to claim 3, characterized in that: Each limiting assembly further includes a restoring element associated with both the fixed component (62, 92) and the movable component (64, 94) to maintain the movable component in a default position.

5. The table saw according to claim 4, characterized in that: The movable member (64, 94) of each limiting assembly is pivotally attached to the fixed member (62, 92) about an axis and includes a stopper engaged with a corresponding positioning block (66, 96) when in the default position.

6. The table saw according to claim 5, characterized in that: The movable component (64, 94) of each limiting assembly also includes an additional stopper which engages with the corresponding positioning block (66, 96) when the inclination angle is equal to the minimum value or the maximum value and blocks the corresponding positioning block from further moving in the direction of the inclination angle less than the minimum value or greater than the maximum value.

7. The table saw according to claim 6, characterized in that: The stop and / or additional stop of each limit assembly is provided by an integral part of the movable member (64, 94) or an additional element attached to the movable member.

8. The table saw according to claim 7, characterized in that: The fixed component of each limiting assembly is a groove-shaped member fixed to the front side wall (15) and including a bottom wall (61) and two side walls (63); the movable component (64, 94) includes an arm (86) installed around a pivot (65) supported by the two side walls and a bolt (88) connected to the arm (86); the bolt head (71) of the bolt (88) serves as the stopper; and the reset element is a spring (68) mounted on the pivot (65).

9. The table saw according to any one of claims 1 to 8, characterized in that: The invention also includes a height adjustment device (40) configured to adjust the height of the saw blade and an angle adjustment device (50) configured to adjust the inclination angle of the saw blade, wherein the height adjustment device (40) includes a rotating shaft (42) extending through an arc-shaped groove (19) formed on the front side wall (15). The saw blade support assembly (20) comprises a bracket (32) and a motor assembly (36) supported by the bracket (32), and the height adjustment device (40) is arranged in association with both the motor assembly (36) and the bracket (32); The angle adjustment device (50) comprises: the first limit assembly and the second limit assembly; a handle (51) attached to the protruding end of the rotating shaft (42), which is configured to lock the saw blade at its tilt angle when operated by an operator; and an indicator (75) for indicating the tilt angle of the saw blade, wherein the positioning block of each limit assembly and the indicator (75) are fixed to the bracket (32) of the saw blade support assembly (20).

10. The table saw according to claim 9, characterized in that It also includes a lining wall (18) on the outer side of the front side wall (15), wherein the lining wall (18) includes a lining wall arc groove (11) corresponding to the arc groove (19) on the front side wall (15), and each limiting assembly is arranged on the outer side of the front side wall (15) so that an operator can operate the movable component (64, 94) via the lining wall arc groove (11).

11. The table saw according to any one of claims 1 to 8, characterized in that: The minimum value is -2 degrees, and the maximum value is 47 degrees.

Images