Quick depth setting mechanism and depth setting module

Abstract

The utility model provides a quick depth setting mechanism and depth setting module, the first press block and second press block of quick depth setting mechanism are fixedly installed, first depth setting block and second depth setting block are fixedly installed, first press block, second press block are located between first depth setting block and second depth setting block, and elastic member is installed between first press block and first depth setting block, the lower end of first press block is provided with the pivot, and the upper first depth setting block is provided with recess cavity and pivot slot, first press block is installed in recess cavity, pivot slot is matched with pivot, the tooth part of second press block is provided with the rack engagement of outside, and the tooth part of second press block can be separated from the rack of outside by the press of first press block and drive second press block rotate along pivot, and first press block can drive second press block reset through elastic member. The utility model discloses simple structure, reasonable in design, and accurate positioning, and the free sliding of quick depth setting mechanism can be realized from below to above without pressing operation, and the positioning and adjusting operation of cutting depth are convenient.

Description

Technical Field

[0001] This utility model pertains to auxiliary components for power tools, and relates to structural and performance improvements of saw blade cutting position or depth adjustment devices, particularly a rapid depth-fixing mechanism and depth-fixing module. Background Technology

[0002] Power tools that use a saw blade as the working head are also known as cutting saws, including various types such as table saws, handheld saws, miter saws, and ring saws. Miter saws are a type of cutting saw with an adjustable head assembly. When using them, the material needs to be fixed on the worktable of the base. The head assembly is pushed to move the saw blade toward the material, and then the saw blade rotates to work, generally using the lower part of the saw blade to cut the material.

[0003] A miter saw, also called a circular saw, aluminum saw, or beveling saw, has a saw blade mounted on a head assembly that can be raised and lowered with the head assembly. Therefore, different cutting depths can be achieved by adjusting the position or height of the saw blade. There are generally two types of commonly used saw blade depth adjustment or fixing mechanisms. One type uses a screw-based depth adjustment mechanism, which has the basic function of adjusting the depth required for grooving, but adjusting by rotating the screw is quite slow and complex. The other type uses a quick-release mechanism in conjunction with the screw. This mechanism solves the problems of slow and complex adjustment, but the groove depth needs to be estimated visually or with the aid of other measuring tools, resulting in inaccurate groove depth accuracy.

[0004] In addition, the main function of the depth adjustment or fixed depth mechanism of the miter saw should be to ensure the downward cutting depth of the saw blade. However, the existing mechanism of this type requires resetting before it can be operated, whether the saw blade position is adjusted downward or upward, which is inconvenient for position adjustment and use of the cutting saw.

[0005] For example, a "sliding oblique cutting saw" disclosed in Chinese Patent (Authorization Announcement No. CN2912874Y) includes a worktable for placing the workpiece, a support, and a sawing machine. The sawing machine includes a circular saw blade and a motor that drives the circular saw blade to rotate. The sawing machine is connected to the worktable via the support, and the sawing machine can move back and forth and pivot up and down relative to the upper surface of the worktable. The sawing machine is also equipped with a depth adjustment mechanism, and the support is equipped with a rotatable depth setting mechanism. The depth adjustment mechanism selectively cooperates with the depth setting mechanism to determine the lower limit position of the circular saw blade. The depth setting mechanism includes an adjustment block with at least one step. The operator only needs to rotate the adjustment block to adjust it to the step corresponding to the required cutting groove depth to quickly and accurately cut the required groove depth. Of course, fine adjustments can also be made using the adjustment bolts on the sawing machine when necessary.

[0006] The depth-fixing mechanism disclosed in the above-mentioned sliding oblique cutting saw technology still cannot achieve free adjustment of the saw blade position downwards or upwards, and cannot guarantee cutting accuracy. Utility Model Content

[0007] The purpose of this invention is to provide a rapid depth-determining mechanism and depth-determining module to address the shortcomings of existing technologies.

[0008] To achieve the purpose of this utility model, the following technical solution is adopted: A rapid depth-fixing mechanism includes a first pressing block, a first depth-fixing block, a second pressing block, a second depth-fixing block, and an elastic element. The first pressing block and the second pressing block are fixedly installed, and the first depth-fixing block and the second depth-fixing block are located between the first depth-fixing block and the second depth-fixing block. The elastic element is installed between the first pressing block and the first depth-fixing block. A rotating shaft is provided at the lower end of the first pressing block. A groove cavity and a rotating shaft groove are provided on the first depth-fixing block. The first pressing block is installed in the groove cavity, and the rotating shaft groove cooperates with the rotating shaft. The second pressing block is provided with teeth that mesh with an external rack. By pressing the first pressing block, the second pressing block can be driven to rotate along the rotating shaft, causing the teeth of the second pressing block to separate from the external rack. The elastic element can push the first pressing block to reset the second pressing block.

[0009] To further achieve the objectives of this utility model, the following technical solutions may also be adopted: As described above, the rapid depth-determining mechanism includes a pressing plate and a first connecting block. The first connecting block is fixed on one side of the pressing plate. The rotating shaft is connected to the lower end of the pressing plate through an inclined plate. The first connecting block is located between the pressing plate and the second pressing block. The rotating shaft and the first connecting block are located on the same side of the pressing plate.

[0010] As described above, in the rapid depth-fixing mechanism, the second pressing block includes a side plate and a second connecting block. The second connecting block is fixed on one side of the side plate and is disposed between the first pressing block and the side plate. The side plate outside the second connecting block is provided with teeth.

[0011] As described above, the rapid depth-determining mechanism has two sets of teeth, which are respectively located on both sides of the second connecting block.

[0012] As described above, in the rapid depth-fixing mechanism, a third connecting block is provided on the outside of the groove cavity of the first depth-fixing block. The third connecting block is connected and fixed to the second depth-fixing block through a connector. An elastic element is installed between the third connecting block and the first pressing block. The elastic element and the rotating shaft are located at the upper and lower ends of the first depth-fixing block, respectively.

[0013] In the rapid depth-determining mechanism described above, the elastic element is a spring, and the connecting element is a screw.

[0014] The depth-fixing module includes an arc-shaped block with an arc-shaped groove. A rapid depth-fixing mechanism as described above is installed on the arc-shaped groove. The rack is installed on the side wall of the arc-shaped groove, and the teeth on the rack are opposite to the teeth of the second pressing block. The first pressing block and the first depth-fixing block are located on one side of the arc-shaped groove, and the second pressing block and the second depth-fixing block are located on the other side of the arc-shaped groove.

[0015] As described above, in the depth-fixing module, a set of racks is provided on each of the two side walls of the arc-shaped groove, and a scale is provided on the outer side of the arc-shaped block.

[0016] As described above, in the depth-fixing module, the teeth of the rack have a right angle on one side and an inclined plane on the other side, and the teeth of the second pressing block have an inclined plane on one side and a right angle on the other side.

[0017] The advantages of this utility model are: 1. This utility model has a simple structure and reasonable design, which facilitates the positioning and adjustment of the saw blade cutting depth and ensures cutting accuracy.

[0018] 2. This rapid depth-fixing mechanism and module, through the cooperation of the first pressing block, the second pressing block, and the rack, allows for free sliding without pressing when moving upwards, facilitating the reset or position adjustment of the saw blade's cutting depth. Only when moving downwards does the first pressing block need to be pressed, disengaging the teeth of the second pressing block from the rack, before position adjustment can be made, ensuring the accuracy and stability of the saw blade's cutting depth. The elastic element, in its free state, can apply an outward pushing force to the first pressing block, causing it to engage the teeth of the second pressing block with the rack; after the first pressing block is pressed, the elastic element automatically resets it. Scale markings are provided on the outer circumference of the arc-shaped block for easy height positioning. Specifically: The pivot of the first pressing block can rotate within the pivot groove of the first depth-fixing block, and an elastic element is added between the first pressing block and the first depth-fixing block. In the free state, the elastic element pushes the first pressing block outward, and the first pressing block drives the teeth of the second pressing block to mesh with the rack of the arc-shaped block. When the first pressing block is pressed down, the first pressing block drives the teeth of the second pressing block to disengage from the rack of the arc-shaped block. At this time, the rapid depth-fixing mechanism can slide freely on the arc groove of the arc-shaped block.

[0019] When a thrust is applied to the rapid depth-setting mechanism from bottom to top, both the first and second depth-setting blocks will slide and rise around the arc-shaped groove on the arc-shaped block, even without pressing the first pressing block. However, if a thrust is applied from top to bottom without pressing the first pressing block, the teeth of the second pressing block will mesh and lock with the rack on the arc-shaped block, becoming tighter with each press. In the free state, when a force is applied to the rapid depth-setting mechanism from bottom to top, the first and second pressing blocks will rotate counterclockwise around the axis, and the teeth of the second pressing block will automatically disengage from the rack on the arc-shaped block. Furthermore, since the teeth of the second pressing block and the rack on the arc-shaped block are inclined planes touching, disengagement is even easier. If force is applied to the rapid depth-setting mechanism from top to bottom, force analysis shows that the first and second pressing blocks rotate clockwise around the axis. The teeth of the second pressing block will mesh closer and closer with the rack on the arc-shaped block. In particular, the two teeth are in contact at right angles, making it even more difficult to disengage. At this point, the first pressing block needs to be pressed down to drive the second pressing block to rotate counterclockwise around the axis, so that the teeth of the second pressing block disengage from the rack on the arc-shaped block, allowing the rapid depth-setting mechanism to slide freely. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0021] Figure 1 This is an exploded view of the depth-fixing module described in this utility model; Figure 2 This is a schematic diagram of the internal structure of the depth-fixing module described in this utility model; Figure 3 This is a schematic diagram of the depth-fixing module of this utility model (free state); Figure 4 yes Figure 3 Sectional view along axis AA; Figure 5 This is a schematic diagram of the depth-fixing module described in this utility model (pressed state); Figure 6 yes Figure 5 BB-direction sectional view.

[0022] Figure label: 1-First pressing block, 11-Pressing plate, 12-First connecting block, 13-Sloping plate, 14-Rotating shaft; 2-First fixed-depth block, 21-Groove cavity, 22-Rotating shaft groove, 23-Third connecting block; 3-Second pressing block, 31-Side plate, 32-Second connecting block, 33-Toothed part 4-Second depth block, 41-Screw; 5-Elastic element; 6-Arc-shaped block, 61-Arc-shaped groove, 62-Rack, 63-Scale. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0024] In the description of the embodiments of this utility model, unless otherwise explicitly limited, terms such as setting, installing, and connecting should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution. For ease of understanding and explanation, this embodiment uses the depth-determining module as a whole to illustrate the technical solution that includes a rapid depth-determining mechanism.

[0025] like Figures 1-6 As shown, this embodiment discloses a depth-determining module, including an arc-shaped block 6, an arc-shaped groove 61 on the arc-shaped block 6, and a rapid depth-determining mechanism installed on the arc-shaped groove 61.

[0026] This depth-fixing module is mounted on the head assembly and can be used in cutting saws with adjustable head assemblies, such as miter saws. The arc-shaped block 6 of the depth-fixing module is fixed to the head assembly via mounting holes and bolt connections.

[0027] To facilitate the adjustment and positioning of the rapid depth-determining mechanism, a scale mark 63 is set on the outer side of the arc-shaped block 6. The cutting depth can be quickly set and accurately controlled through the scale mark 63.

[0028] like Figure 1 , Figure 4 , Figure 6 As shown, in this embodiment, the rack 62 is mounted on the side wall of the arc-shaped groove 61, and the teeth on the rack 62 are opposite to the teeth 33 of the second pressing block 3. Therefore, the teeth of the second pressing block 3 can engage and lock with the rack 62 or slide after disengaging.

[0029] See Figure 1 , Figure 2 As shown, the rapid depth-fixing mechanism includes a first pressing block 1, a first depth-fixing block 2, a second pressing block 3, a second depth-fixing block 4, and an elastic element 5.

[0030] The first pressing block 1 and the first depth-fixing block 2 are located on one side of the arc-shaped groove 61, and the second pressing block 3 and the second depth-fixing block 4 are located on the other side of the arc-shaped groove 61.

[0031] The first pressing block 1 and the second pressing block 3 are fixedly installed, the first fixed depth block 2 and the second fixed depth block 4 are fixedly installed, the first pressing block 1 and the second pressing block 3 are located between the first fixed depth block 2 and the second fixed depth block 4, and the elastic element 5 is installed between the first pressing block 1 and the first fixed depth block 2.

[0032] The first pressing block 1, the first depth-fixing block 2, the second pressing block 3, the second depth-fixing block 4, and the arc-shaped block 6 are made of injection molded parts or alloy materials. Each of the above components is an independent integrated structure, which is easy to assemble and can ensure good structural strength.

[0033] In this embodiment, the elastic element 5 is a spring, and the connecting element is a screw 41.

[0034] like Figure 1 , Figure 2 As shown, the lower end of the first pressing block 1 is provided with a rotating shaft 14, and the first fixed depth block 2 is provided with a groove cavity 21 and a rotating shaft groove 22, which cooperates with the rotating shaft 14.

[0035] like Figures 3-6 As shown, a first pressing block 1 is installed in the groove cavity 21, and the first pressing block 1 can be pressed and rotated within the groove cavity 21. A toothed portion 33 is provided on the second pressing block 3 to mesh with the external rack 62. Therefore, structurally, pressing the first pressing block 1 can drive the second pressing block 3 to rotate along the rotating shaft 14, causing the toothed portion 33 of the second pressing block 3 to separate from the external rack 62. The elastic element 5 can then push the first pressing block 1 to reset the second pressing block 3.

[0036] The first pressing block 1 includes a pressing plate 11 and a first connecting block 12. The first connecting block 12 is fixed on one side of the pressing plate 11. The rotating shaft 14 is connected to the lower end of the pressing plate 11 through the inclined plate 13. The first connecting block 12 is located between the pressing plate 11 and the second pressing block 3. The rotating shaft 14 and the first connecting block 12 are located on the same side of the pressing plate 11.

[0037] The second pressing block 3 includes a side plate 31 and a second connecting block 32. The second connecting block 32 is fixed on one side of the side plate 31 and is disposed between the first pressing block 1 and the side plate 31. A toothed portion 33 is provided on the side plate 31 outside the second connecting block 32.

[0038] To ensure smooth and stable sliding, as well as a locking effect when pushed down, two sets of corresponding and cooperating teeth 33 on the second pressing block 3 and racks 62 on the arc-shaped groove 61 are provided. The two sets of teeth 33 are respectively located on both sides of the second connecting block 32. In addition, the shape of the teeth of the rack 62 is a right angle on one side and a bevel on the other side, and the shape of the teeth 33 on the second pressing block 3 is a bevel on one side and a right angle on the other side.

[0039] During installation, the first connecting block 12 of the first pressing block 1 and the second connecting block 32 of the second pressing block 3 pass through the arc groove 61 of the arc block 6 and are connected together to fix the first pressing block 1 and the second pressing block 3. To increase the stability of the connection between the two, screws or other connecting parts can be set on the first connecting block 12 and the second connecting block 32 for fixing.

[0040] The third connecting block 23 of the first depth-fixing block 2 passes through the arc groove 61 and connects with the second depth-fixing block 4. At this time, the first pressing block 1 and the second pressing block 3 are fixed, the first depth-fixing block 2 and the second depth-fixing block 4 are fixed, and the spring is fixed between the first pressing block 1 and the first depth-fixing block 2 through the card seat. The above components constitute a rapid depth-fixing mechanism and can slide around the arc groove 61 in the middle of the arc block 6 as a whole.

[0041] Alternatively, a fourth connecting block can be set on the second fixed depth block 4. The fourth connecting block cooperates with the third connecting block 23 on the first fixed depth block 2. A through hole is opened at the fourth connecting block position on the second fixed depth block 4. After the screw passes through the through hole, the fourth connecting block and the third connecting block 23 are connected, so that the second fixed depth block 4 and the first fixed depth block 2 can be better installed and fixed.

[0042] The pivot 14 of the first pressing block 1 can rotate within the pivot groove 22 of the first depth-fixing block 2. In the free state, the spring pushes the first pressing block 1 outward, causing the first pressing block 1 to engage with the teeth 33 of the second pressing block 3 and the rack 62 of the arc-shaped block 6. When the first pressing block 1 is pressed down, it disengages the teeth 33 of the second pressing block 3 from the rack 62 of the arc-shaped block 6. At this time, the rapid depth-fixing mechanism can slide freely on the arc groove 61 of the arc-shaped block 6.

[0043] like Figure 4 , Figure 6 As shown, in this embodiment, the first depth block 2 is provided with a third connecting block 23 on the outside of the groove cavity 21. The third connecting block 23 is connected and fixed to the second depth block 4 through a connector. An elastic element 5 is installed between the third connecting block 23 and the first pressing block 1. The elastic element 5 and the rotating shaft 14 are located at the upper and lower ends of the first depth block 2, respectively.

[0044] like Figure 4 , Figure 6 As shown, in this embodiment, when the depth-fixing module is in use, a thrust is applied to the rapid depth-fixing mechanism from bottom to top. At this time, even if the first pressing block 1 is not pressed, the first pressing block 1 and the second depth-fixing block 4 will slide and rise around the arc-shaped groove 61. However, if a thrust is applied from top to bottom without pressing the first pressing block 1, the teeth 33 of the second pressing block 3 will mesh with the rack 62 on the arc-shaped block 6 and lock themselves, becoming tighter and tighter with each press.

[0045] The technical principle of the above process is as follows: In the free state, force is applied to the rapid depth-fixing mechanism from bottom to top. At this time, the first pressing block 1 and the second pressing block 3 rotate counterclockwise around the rotating shaft 14. The teeth 33 of the second pressing block 3 will automatically disengage from the rack 62 on the arc-shaped block 6. At this time, the teeth 33 of the second pressing block 3 and the teeth of the rack 62 are inclined planes touching, making it easier to disengage.

[0046] If force is applied to the rapid depth-setting mechanism from top to bottom, force analysis shows that the first pressing block 1 and the second pressing block 3 rotate clockwise around the rotating shaft 14. The teeth 33 of the second pressing block 3 will mesh closer and closer with the rack 62 on the arc-shaped block 6. In particular, the two teeth are in right-angle contact at this time, making it even more difficult to disengage. At this time, the first pressing block 1 needs to be pressed to drive the second pressing block 3 to rotate counterclockwise around the rotating shaft 14, so that the teeth 33 of the second pressing block 3 disengage from the rack 62 on the arc-shaped block 6, and the rapid depth-setting mechanism can slide freely.

[0047] All technical contents not described in detail in this utility model are publicly known technologies.

Claims

1. A rapid depth-determining mechanism, characterized in that, The device includes a first pressing block, a first fixed-depth block, a second pressing block, a second fixed-depth block, and an elastic element. The first pressing block and the second pressing block are fixedly installed, as are the first fixed-depth block and the second fixed-depth block. The first pressing block and the second pressing block are located between the first fixed-depth block and the second fixed-depth block. The elastic element is installed between the first pressing block and the first fixed-depth block. A rotating shaft is provided at the lower end of the first pressing block. A groove cavity and a rotating shaft groove are provided on the first fixed-depth block. The first pressing block is installed in the groove cavity, and the rotating shaft groove cooperates with the rotating shaft. The second pressing block is provided with teeth that mesh with an external rack. By pressing the first pressing block, the second pressing block can be driven to rotate along the rotating shaft, causing the teeth of the second pressing block to separate from the external rack. The elastic element can push the first pressing block to reset the second pressing block.

2. The rapid depth-determining mechanism according to claim 1, characterized in that, The first pressing block includes a pressing plate and a first connecting block. The first connecting block is fixed on one side of the pressing plate. The rotating shaft is connected to the lower end of the pressing plate through an inclined plate. The first connecting block is located between the pressing plate and the second pressing block. The rotating shaft and the first connecting block are located on the same side of the pressing plate.

3. The rapid depth-determining mechanism according to claim 1, characterized in that, The second pressing block includes a side plate and a second connecting block. The second connecting block is fixed to one side of the side plate and is disposed between the first pressing block and the side plate. The side plate outside the second connecting block is provided with teeth.

4. The rapid depth-determining mechanism according to claim 3, characterized in that, The toothed part is provided in two sets, and the two sets of toothed parts are respectively located on both sides of the second connecting block.

5. The rapid depth-determining mechanism according to claim 1, characterized in that, The first fixed-depth block has a third connecting block on the outside of the groove cavity. The third connecting block is connected and fixed to the second fixed-depth block through a connector. An elastic element is installed between the third connecting block and the first pressing block. The elastic element and the rotating shaft are located at the upper and lower ends of the first fixed-depth block, respectively.

6. The rapid depth-determining mechanism according to claim 5, characterized in that, The elastic element is a spring, and the connecting element is a screw.

7. A depth-fixing module, characterized in that, The device includes an arc-shaped block with an arc-shaped groove. A rapid depth-determining mechanism as described in any one of claims 1-6 is installed on the arc-shaped groove. The rack is installed on the side wall of the arc-shaped groove, and the teeth on the rack are opposite to the teeth of the second pressing block. The first pressing block and the first depth-determining block are located on one side of the arc-shaped groove, and the second pressing block and the second depth-determining block are located on the other side of the arc-shaped groove.

8. The depth-fixing module according to claim 7, characterized in that, A set of racks is provided on each of the two side walls of the arc-shaped groove, and a scale is provided on the outer side of the arc-shaped block.

9. The depth-fixing module according to claim 7, characterized in that, The teeth of the rack are shaped as a right angle on one side and an inclined plane on the other side, while the teeth of the second pressing block are shaped as an inclined plane on one side and a right angle on the other side.

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