Cutting depth adjusting mechanism and track saw

Abstract

The utility model provides a cutting depth adjusting mechanism and a track saw. The cutting depth adjusting mechanism is arranged between the inner front side of a fixed protective cover and the front side of a saw body and comprises a depth gauge, a cutting depth adjusting mechanism, a cutting depth adjusting mechanism and a cutting depth adjusting mechanism, and the depth gauge is fixedly arranged on the inner front side of the fixed protective cover and provided with a mounting groove and a guide through groove; the sliding block is slidably mounted on the depth gauge, the upper end part is provided with a guide bulge, and the lower end part is provided with a connecting through hole; the locking block is arranged in the mounting groove, and the upper end part of the locking block is connected with the guide bulge in an up-down overturning manner; the adjusting button is provided with a button body and a pressing rod, and the free end part of the pressing rod sequentially penetrates through the connecting through hole and the guide through groove, so that the pressing rod extends into the mounting groove and is movably connected with the lower end part of the locking block; the reset spring is located between the button body and the sliding block and arranged outside the pressing rod in a sleeving mode, a plurality of depth gauge ratchets are arranged on the bottom wall of the installation groove, at least one locking block ratchet is arranged at the lower end of the locking block, and a positioning block matched with a limiting block on the front side of the saw body is arranged on the sliding block.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric tools, and particularly relates to a cutting depth adjusting mechanism and a track saw comprising the same. BACKGROUND

[0002] The track saw is a handheld circular saw for straight-line cutting guided by a track, and gradually becomes a commonly used tool in cutting operations due to its good straight-line cutting accuracy.

[0003] In the prior art, the track saw has a depth gauge for viewing the cutting depth, but the operator needs to concentrate on the cutting process, and the depth control is not in place, and the plate is scrapped due to carelessness. Therefore, the cutting depth adjustment of the track saw has become a technical problem that the technical personnel in the field are eager to solve. SUMMARY

[0004] To solve the above-mentioned problems of the prior art, the purpose of the utility model is to provide a cutting depth adjusting mechanism and a track saw comprising the same.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] <Scheme I>

[0007] The utility model provides a cutting depth adjusting mechanism, which is arranged between the inner front side of the fixed guard and the front side of the saw body in the track saw, the front side of the saw body is provided with a limiting block, and has the following characteristics: a depth gauge is fixedly arranged on the inner front side of the fixed guard, an installation groove is arranged on the side surface close to the fixed guard, and a guide through slot is arranged on the side surface away from the fixed guard and communicated with the installation groove; a sliding block is slidingly installed on the depth gauge, an upper end portion of the sliding block is provided with a guide protrusion matched with the guide through slot, and a lower end portion of the sliding block is provided with a connecting through hole; a locking block is arranged in the installation groove, an upper end portion of the locking block is reversibly connected with the guide protrusion; an adjusting button has a button body and a pressing rod fixedly connected with the button body, a free end portion of the pressing rod passes through the connecting through hole and the guide through slot in sequence, so as to extend into the installation groove and be movably connected with the lower end portion of the locking block; and a return spring is arranged between the button body and the sliding block and sleeved on the outside of the pressing rod.

[0008] The cutting depth adjusting mechanism has the characteristics that the cutting depth adjusting mechanism further comprises a fine adjustment knob, the fine adjustment knob has a knob body matched with the limiting block and a screw rod fixedly connected with the knob body, and the lower end of the screw rod is installed on the positioning block in a threaded connection mode.

[0009] The cutting depth adjusting mechanism has the characteristics that a compression spring is arranged between the knob body and the positioning block, and the compression spring is arranged outside the screw rod.

[0010] The cutting depth adjusting mechanism has the characteristics that a cutting depth table is arranged on the depth ruler.

[0011] <Scheme two>

[0012] The utility model further provides a track saw has the characteristics, including: bottom plate, mounting seat, fixedly arranged in one side of bottom plate, fixed shroud, located the outside of mounting seat, and fixedly arranged on bottom plate, saw body, through pivot rotatably installed on mounting seat, front side is equipped with limiting block, and the cutting depth adjusting mechanism of < scheme one > is arranged between the inner front side of fixed shroud and the front side of saw body.

[0013] The track saw has the characteristics that the fixed shroud and the mounting seat are integrally formed.

[0014] Practical new type function and effect

[0015] According to the cutting depth adjusting mechanism and the track saw, the depth ruler, the sliding block, the locking block, the adjusting button and the reset spring are arranged, the mounting groove is arranged on the side surface close to the fixed shroud of the depth ruler, the guide through groove is arranged on the side surface away from the fixed shroud, the sliding block is slidably installed on the depth ruler, the upper end portion is provided with the guide protrusion matched with the guide through groove, the lower end portion is provided with the connecting through hole, the upper end portion of the locking block is up-down flip-connectable with the guide protrusion, the adjusting button has the button body and the pressing rod, the free end portion of the pressing rod sequentially passes through the connecting through hole and the guide through groove, thereby extending into the mounting groove and being movably connected with the lower end portion of the locking block, the reset spring is located between the button body and the sliding block and is arranged outside the pressing rod, the bottom wall of the mounting groove is provided with a plurality of depth ruler ratchets arranged at equal intervals along the length direction of the depth ruler, the lower end portion of the locking block is provided with at least one locking block ratchet matched with the depth ruler ratchet, the sliding block is provided with the positioning block, the saw body is provided with the limiting block matched with the positioning block, and therefore, the utility model has the advantages of simple structure and convenient operation, and the cutting depth can be effectively adjusted and fixed by only pressing the adjusting button. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1is a three-dimensional structure schematic diagram of the track saw in the embodiment of the utility model.

[0017] Figure 2 is a three-dimensional structure schematic diagram of the depth adjustment mechanism in the embodiment of the utility model.

[0018] Figure 3 is an exploded installation schematic diagram of the depth adjustment mechanism in the embodiment of the utility model.

[0019] Figure 4 is an exploded installation schematic diagram of the depth adjustment mechanism in the embodiment of the utility model. DETAILED DESCRIPTION

[0020] The concept, specific structure and generated technical effects of the utility model will be further explained below in combination with the drawings, so as to fully understand the purpose, features and effects of the utility model.

[0021] <EMBODIMENT>

[0022] Figure 1 is a three-dimensional structure schematic diagram of the track saw in the embodiment of the utility model.

[0023] As Figure 1 shown, in the embodiment, the track saw 10 comprises a bottom plate 11, a mounting seat 12, a saw body 13, a fixed guard 14, a saw blade 15 and a depth adjustment mechanism 16.

[0024] As Figure 1 shown, the bottom plate 11 is in overall rectangular structure.

[0025] As Figure 1 shown, the mounting seat 12 is fixedly arranged at one side of the bottom plate 11 and is used for mounting the saw body 13.

[0026] As Figure 1 shown, the rear end of the saw body 13 is rotatably installed on the mounting seat 12 through a pivot 132. In the embodiment, the front side of the saw body 13 is provided with a limiting block 131 used for adjusting the cutting depth.

[0027] As Figure 1 shown, the fixed guard 14 is located at the outer side of the mounting seat 12 and is fixedly arranged on the base 11. In the embodiment, the fixed guard 14 and the mounting seat 12 are integrally formed.

[0028] As Figure 1 shown, the saw blade 15 is located at the outer side of the fixed guard 14 and is fixedly installed on the output shaft of the saw body 13. In the embodiment, the outer side of the saw blade 15 is further provided with a guard cover, and the guard cover is installed on the fixed guard 14 through a screw, so that the saw blade 15 is located in the space surrounded by the guard cover and the fixed guard 14.

[0029] Figure 2 is the three-dimensional structure schematic diagram of the cutting depth adjusting mechanism in the embodiment of the utility model; Figure 3 is the exploded installation schematic diagram of the cutting depth adjusting mechanism in the embodiment of the utility model; Figure 4 is the exploded installation schematic diagram of the cutting depth adjusting mechanism in the embodiment of the utility model.

[0030] As shown in Figures 1 to 4 , the cutting depth adjusting mechanism 16 is arranged between the inner front side of the fixed shroud 14 and the front side of the saw body 13, comprising a depth scale 161, a sliding block 162, a locking block 163, an adjusting button 164 and a reset spring 165.

[0031] The depth scale 161 is in an arc shape and is fixedly arranged on the inner front side of the fixed shroud 14. The depth scale 161 is provided with an arc-shaped mounting groove 161a on the side surface close to the fixed shroud 14, and is provided with an arc-shaped guide through slot 161b on the side surface away from the fixed shroud 14, which is in communication with the mounting groove 161a. In the embodiment, the bottom wall of the mounting groove 161a is provided with a plurality of depth scale ratchets 161c (see Figure 3 ) arranged at equal intervals along the length direction of the depth scale 161; the depth scale 161 is provided with a cutting depth table 161d.

[0032] The sliding block 162 is slidingly arranged on the depth scale 161, and the upper end portion thereof is provided with a guide protrusion 162a matched with the guide through slot 161b, which is movably arranged in the guide through slot 161b and the free end portion thereof extends into the mounting groove 161a; the lower end portion of the sliding block 162 is provided with a connecting through hole 162b for the pressing rod 164b of the adjusting button 164 to pass through.

[0033] In the embodiment, the sliding block 162 is provided with a positioning block 162c matched with the limiting block 131 at the portion close to the saw body 13.

[0034] The locking block 163 is arranged in the mounting groove 161a, and the upper end portion thereof is connected with the free end portion of the guide protrusion 162 through a rotating shaft 163a, and the free end portion of the guide protrusion 162 is provided with a through hole (not shown in the figure) for the rotating shaft 163a to pass through. In the embodiment, the lower end portion of the locking block is provided with at least one locking block ratchet 163b (see Figure 3 ) matched with the depth scale ratchet 161c.

[0035] The adjusting button 164 has a button body 164a and a pressing rod 164b fixedly connected with the button body 164a, a free end of the pressing rod 164b passes through the connecting hole 162b and the guide slot 161b in sequence, and extends into the installation groove 161a and movably connects with the lower end of the locking block 163. In the embodiment, the pressing rod 164b movably connects with the locking block 163 through a fixing screw 164c, specifically, the lower end of the locking block 163 is provided with a through hole 163d with a diameter smaller than that of the pressing rod 164b and matched with the fixing screw 164c, the shank of the fixing screw 164c movably passes through the through hole 163d and connects with the pressing rod 164b, and the free end surface of the pressing rod 164b is provided with a screw hole (not shown in the figure) matched with the fixing screw 164c.

[0036] The reset spring 165 is located between the button body 164a and the sliding block 162, and is sleeved outside the pressing rod 164b, so as to ensure that the locking block ratchet 163b can reliably engage with the depth ruler ratchet 161c under the elastic force of the reset spring 165.

[0037] In the embodiment, the process of the depth adjustment mechanism 16 for adjusting the cutting depth of the track saw is as follows:

[0038] The adjusting button 164 is pressed towards the fixed guard 14, the spring force of the reset spring 165 is overcome, the pressing rod 164b drives the locking block 163 to turn upward in a direction away from the depth ruler 161, so that the locking block ratchet 163b of the locking block 163 is disengaged from the depth ruler ratchet 161c.

[0039] The adjusting button 164 is moved upward or downward, the sliding block 162 is moved upward or downward to the preset cutting depth position, then the adjusting button 164 is released, the adjusting button 164 is reset under the spring force of the reset spring 165, the locking block 163 is turned downward to reset towards the direction of the depth ruler 161, so that the locking block ratchet 163b engages with the depth ruler ratchet 161c, thereby fixing the cutting depth.

[0040] Embodiment action and effect

[0041] According to the depth adjusting mechanism and the track saw of the present embodiment, the depth gauge is provided with a mounting groove on the side close to the fixed guard, a guide through slot on the side away from the fixed guard, the slider is slidingly installed on the depth gauge, the upper end of the slider is provided with a guide protrusion matched with the guide through slot, the lower end of the slider is provided with a connecting through hole, the upper end of the locking block is reversibly connected with the guide protrusion, the adjusting button has a button body and a pressing rod, the free end of the pressing rod passes through the connecting through hole and the guide through slot in sequence, thereby extending into the mounting groove and movably connecting with the lower end of the locking block, the reset spring is located between the button body and the slider and is sleeved on the outside of the pressing rod, the bottom wall of the mounting groove is provided with a plurality of depth gauge ratchets arranged at equal intervals along the length direction of the depth gauge, the lower end of the locking block is provided with at least one locking block ratchet matched with the depth gauge ratchet, the slider is provided with a positioning block, and the saw body is provided with a limiting block matched with the positioning block, so that the cutting depth can be effectively adjusted and fixed by only pressing the adjusting button.

[0042] <Variant>

[0043] The present variant is a further improvement of the embodiment, and the same components as the embodiment are given the same symbols, and the same description is omitted.

[0044] As shown in Figure 3 and Figure 4 , the difference between the present variant and the embodiment is that the depth adjusting mechanism 16 further includes a fine adjustment knob 166 in the present variant.

[0045] The fine adjustment knob 166 has a knob body 166a matched with the limiting block 131 and a screw rod 166b fixedly connected with the knob body 166a, the lower end of the screw rod 166b is installed on the positioning block 162c in a threaded connection manner, and the positioning block 162c is provided with a threaded hole (not shown in the figure) matched with the screw rod 166b. In the present variant, a compression spring 166c is further provided between the knob body 166a and the positioning block 162c, the compression spring 166c is sleeved on the outside of the screw rod 166b, so that the outer thread of the screw rod 166b tightly fits with the inner thread in the threaded hole, increasing the friction between the threads and effectively improving the anti-loosening ability of the screw rod 166b, thereby ensuring the safety and reliability of the fine adjustment knob.

[0046] In the present variant, in addition to the functions and effects of the embodiment, the fine adjustment knob is further included, the lower end of the screw rod of the fine adjustment knob is installed on the positioning block in a threaded connection manner, the position of the cutting depth can be fine adjusted, and the precision of the cutting depth adjustment is further improved.

[0047] The above-mentioned embodiments are preferred cases of the present application, and are not used to limit the protection scope of the present application.

Claims

1. A depth adjustment mechanism provided between the inner front side of a fixed guard and the front side of a saw body in a track saw, the front side of the saw body being provided with a stopper, characterized in that, Comprising: a depth gauge fixedly arranged on the inner front side of the fixed guard, a mounting groove being arranged on the side of the fixed guard close to the fixed guard, and a guide channel being arranged on the side of the fixed guard away from the fixed guard and communicating with the mounting groove; a sliding block slidingly arranged on the depth gauge, an upper end of the sliding block being provided with a guide protrusion matched with the guide channel, and a lower end of the sliding block being provided with a connecting through hole; a locking block arranged in the mounting groove, an upper end of the locking block being reversibly connected with the guide protrusion; an adjusting button having a button body and a pressing rod fixedly connected with the button body, a free end of the pressing rod penetrating the connecting through hole and the guide channel in sequence and extending into the mounting groove and being movably connected with a lower end of the locking block; and a return spring located between the button body and the sliding block and sleeved on the outside of the pressing rod, wherein a bottom wall of the mounting groove is provided with a plurality of depth gauge ratchets arranged at equal intervals along the length direction of the depth gauge, the lower end of the locking block is provided with at least one locking block ratchet matched with the depth gauge ratchets, and the sliding block is provided with a positioning block matched with the limiting block.

2. The depth adjustment mechanism of claim 1, wherein, Further comprising: a fine adjustment knob having a knob body matched with the limiting block and a screw rod fixedly connected with the knob body, wherein a lower end of the screw rod is threadedly connected with the positioning block.

3. The depth adjustment mechanism according to claim 2, wherein: wherein a compression spring is arranged between the knob body and the positioning block, the compression spring being sleeved on the outside of the screw rod.

4. The depth adjustment mechanism according to claim 1, wherein: wherein a cutting depth table is arranged on the depth gauge.

5. A track saw, characterized in that Comprising: a bottom plate; a mounting seat fixedly arranged on one side of the bottom plate; a fixed guard arranged outside the mounting seat and fixedly arranged on the bottom plate; a saw body rotatably mounted on the mounting seat by a pivot, a front side of the saw body being provided with a limiting block; and the depth adjustment mechanism according to any one of claims 1-4, the depth adjustment mechanism being arranged between the inner front side of the fixed guard and the front side of the saw body.

6. The track saw according to claim 5, wherein: wherein the fixed guard and the mounting seat are integrally formed.

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