Dovetail saw with saw blade convenient to replace

Abstract

The utility model discloses a dovetail saw with saw blades convenient to replace, which belongs to the technical field of dovetail saws and comprises a blade replacing groove plate, a dovetail handle is arranged at one end of the blade replacing groove plate, a fixing plate is arranged at the top of the blade replacing groove plate, and the bottom of the blade replacing groove plate is rotatably connected with a handle penetrating through the blade replacing groove plate. And an adjusting assembly is arranged in the sheet changing groove plate. A penetrating opening of an existing saw blade is changed and designed to be of a stable triangular structure, the phenomenon that the existing saw blade fixed through two round holes is prone to shaking after being abraded for a long time can be reduced, meanwhile, the adjusting assembly is arranged, and the saw blade can be adjusted conveniently. The three rotating shafts can be pushed to slide along the rails on the corresponding sides at the same time by rotating the handle, and after the three rotating shafts reach the set positions, the racks are fixed through rubber strips by rotating the limiting blocks, so that the racks are rapidly replaced, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dovetail saws, and particularly relates to a dovetail saw convenient for replacing saw blades. Background Art

[0002] A dovetail saw is a woodworking tool with a slender saw body. Its front end can be inserted into a smaller slit, making it flexible to operate and convenient to carry. The saw blade of the dovetail saw usually has relatively fine saw teeth to achieve a smooth cutting effect, and it is suitable for cutting narrow holes and complex curves, which is extremely important in woodworking and joinery. At the same time, the fixing method of the saw blade is also crucial for ensuring the accuracy of sawing and the safety of operation.

[0003] The prior art still has the following deficiencies:

[0004] 1. The saw blades of existing dovetail saws are fixed by two round holes. After long-term wear, the round holes are extremely likely to become larger, resulting in the saw blade shaking and affecting the operation.

[0005] 2. In addition, the saw blades of existing dovetail saws rely on tools to rotate the screws one by one to tighten and replace the saw blades, which is time-consuming, laborious and inefficient. Summary of the Utility Model

[0006] In order to overcome the above defects, the utility model provides a dovetail saw convenient for replacing saw blades, which solves the problems that the saw blades of existing dovetail saws are extremely likely to shake and the replacement of saw blades is time-consuming, laborious and inefficient.

[0007] To achieve the above purpose, the utility model provides the following technical scheme: A dovetail saw convenient for replacing saw blades, including a blade replacement groove plate. One end of the blade replacement groove plate is provided with a dovetail handle. The top of the blade replacement groove plate is provided with a fixing plate. The bottom of the blade replacement groove plate is rotatably connected with a handle penetrating through the blade replacement groove plate. An adjusting component is arranged in the blade replacement groove plate.

[0008] As a further scheme of the utility model: The adjusting component includes three slide rails fixedly connected to the inner wall of the blade replacement groove plate. Each slide rail is composed of two limiting plates. Sliders are arranged between the limiting plates, and the sliders are slidably connected to the corresponding slide rails on one side.

[0009] As a further scheme of the utility model: A rotating shaft is rotatably connected to the slider. The top end of the rotating shaft is fixedly connected with a limiting block. Rubber strips are arranged on both sides of the bottom of the limiting block.

[0010] As a further scheme of the utility model: A disc is coaxially and fixedly connected to the rotating shaft of the handle. An arc-shaped through groove is formed in the disc, and the rotating shaft is slidably connected to the arc-shaped through groove of the disc.

[0011] As a further solution of the present utility model: two rubber pads are arranged on the inner wall of the film-changing groove plate, and the height of the rubber pads is equal to the distance from the top of the disc to the inner wall of the film-changing groove plate.

[0012] As a further solution of the present utility model: a saw blade is arranged between the disc and the rubber strip, a through hole is arranged on the saw blade, and the three rotating shafts are all slidably connected with the through hole, and one side of the saw blade abuts against the bottom of the rubber strip.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. By changing the through hole of the existing saw blade and designing it into a stable triangular structure, it can reduce the phenomenon of saw blade shaking that is likely to occur after long-term wear of the saw blade fixed by two round holes in the existing one.

[0015] 2. In addition, an adjusting component is designed, which can be rotated through the handle to push the three rotating shafts to slide along the corresponding tracks on one side at the same time. After reaching the set position, the rack is fixed by rotating the limiting block through the rubber strip, so as to realize the rapid replacement of the rack, greatly improving the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 1 is a schematic three-dimensional structure diagram of a dovetail saw for conveniently replacing a saw blade proposed by the present utility model;

[0017] Figure 2 FIG. 2 is a schematic structural diagram of a part of the adjusting component of a dovetail saw for conveniently replacing a saw blade proposed by the present utility model;

[0018] Figure 3 FIG. 3 is a schematic diagram of a part of the internal structure of a dovetail saw for conveniently replacing a saw blade proposed by the present utility model;

[0019] Figure 4 FIG. 4 is a schematic three-dimensional structure diagram of a part of a dovetail saw for conveniently replacing a saw blade proposed by the present utility model.

[0020] In the figure: 1 film-changing groove plate, 2 dovetail handle, 3 fixing plate, 4 handle, 5 slide rail, 6 limiting plate, 7 slider, 8 rotating shaft, 9 limiting block, 10 rubber strip, 11 disc, 12 arc through groove, 13 rubber pad, 14 saw blade, 15 through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions of this patent will be further described in detail below in conjunction with the specific embodiments.

[0022] As Figures 1-4 shown, the present utility model provides a technical solution:

[0023] Film-changing slot plate 1, a dovetail handle 2 is provided at one end of the film-changing slot plate 1, a fixing plate 3 is provided at the top of the film-changing slot plate 1, a handle 4 passing through the film-changing slot plate 1 is rotatably connected to the bottom of the film-changing slot plate 1, and an adjusting component is arranged inside the film-changing slot plate 1;

[0024] Specifically, the dovetail handle 2 can meet the more comfortable grasping and operation requirements of operators. The fixing plate 3 on the film-changing slot plate 1 can protect and fix the movement of the tail of the saw blade 14. The handle 4 can adjust the adjusting component inside the film-changing slot plate 1;

[0025] The adjusting component includes three slide rails 5 fixedly connected to the inner wall of the film-changing slot plate 1. Each slide rail 5 is composed of two limiting plates 6. A slider 7 is arranged between the limiting plates 6. The slider 7 is slidably connected to the corresponding slide rail 5 on one side. A disc 11 is coaxially and fixedly connected to the rotating shaft of the handle 4. An arc-shaped through slot 12 is formed in the disc 11. The rotating shaft 8 is slidably connected to the arc-shaped through slot 12 of the disc;

[0026] Specifically, when replacing or fixing the saw blade 14, the handle 4 can be controlled to rotate, thereby driving the disc 11 coaxially and fixedly connected to its rotating shaft to rotate, and then driving the rotating shaft 8 slidably connected to the arc-shaped through slot 12 on the disc 11 to make a sliding movement between the slide rails 5. The limiting block 9 fixedly connected to the rotating shaft 8 also slides accordingly, and the three rotating shafts 8 can be simultaneously fitted with and spaced from the through holes 15 of the saw blade 14;

[0027] A rotating shaft 8 is rotatably connected to the slider 7. A limiting block 9 is fixedly connected to the top end of the rotating shaft 8. Rubber strips 10 are arranged on both sides of the bottom of the limiting block 9. Two rubber pads 13 are arranged on the inner wall of the film-changing slot plate 1. The height of the rubber pads 13 is equal to the distance from the top of the disc 11 to the inner wall of the film-changing slot plate 1. A saw blade 14 is arranged between the disc 11 and the rubber strips 10. Through holes 15 are arranged on the saw blade 14. The three rotating shafts 8 are all slidably connected to the through holes 15. One side of the saw blade 14 abuts against the bottom of the rubber strips 10.

[0028] Specifically, the separation and fixation functions of the limiting block 9 from the saw blade 14 can be realized by controlling the rotation of the limiting block 9 rotatably connected to the slider 7. The rubber strips 10 can increase the friction force and improve the fastening degree. The rubber pads 13 can support the saw blade 14.

[0029] The working principle of the present utility model is:

[0030] The dovetail handle 2 can meet the more comfortable grasping and operation requirements of operators. The fixing plate 3 on the film-changing slot plate 1 can protect and fix the movement of the tail of the saw blade 14. The handle 4 can adjust the adjusting component inside the film-changing slot plate 1;

[0031] When replacing or fixing the saw blade 14, the control handle 4 can be rotated to drive the rotation of the disc 11 fixedly connected coaxially with its rotating shaft, thereby driving the rotating shaft 8 slidably connected to the arc-shaped through slot 12 on the disc 11 to slide between the slide rails 5. The limit block 9 fixedly connected to the rotating shaft 8 also slides accordingly, enabling the simultaneous fitting and spacing of the three rotating shafts 8 and the through port 15 of the saw blade 14.

[0032] The separation and fixing functions of the limit block 9 and the saw blade 14 can be realized by controlling the rotation of the limit block 9 rotatably connected to the slider 7. The rubber strip 10 can increase the friction and improve the fastening degree, and the rubber pad 13 can support the saw blade 14.

[0033] The above describes the preferred embodiments of this patent in detail, but this patent is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art, various changes can be made without departing from the purpose of this patent.

Claims

1. A dovetail saw for conveniently replacing a saw blade, comprising a blade replacement groove plate (1), characterized in that, One end of the film-changing groove plate (1) is provided with a dovetail handle (2). A fixing plate (3) is arranged at the top of the film-changing groove plate (1). A handle (4) penetrating through the film-changing groove plate (1) is rotatably connected to the bottom of the film-changing groove plate (1). An adjusting component is arranged inside the film-changing groove plate (1).

2. The dovetail saw for conveniently replacing a saw blade according to claim 1, characterized in that: The adjusting component includes three slide rails (5) fixedly connected to the inner wall of the film-changing groove plate (1). Each slide rail (5) is composed of two limiting plates (6). A slider (7) is arranged between the limiting plates (6). The slider (7) is slidably connected to the corresponding slide rail (5) on one side.

3. A dovetail saw for conveniently replacing a saw blade according to claim 2, characterized in that: A rotating shaft (8) is rotatably connected to the slider (7). A limiting block (9) is fixedly connected to the top end of the rotating shaft (8). Rubber strips (10) are arranged on both sides of the bottom of the limiting block (9).

4. A dovetail saw for conveniently replacing a saw blade according to claim 3, characterized in that: A disc (11) is coaxially and fixedly connected to the rotating shaft of the handle (4). An arc-shaped through groove (12) is formed in the disc (11). The rotating shaft (8) is slidably connected to the arc-shaped through groove (12) of the disc.

5. The dovetail saw for conveniently replacing a saw blade according to claim 4, wherein: Two rubber pads (13) are arranged on the inner wall of the film-changing groove plate (1). The height of the rubber pad (13) is equal to the distance from the top of the disc (11) to the inner wall of the film-changing groove plate (1).

6. The dovetail saw for conveniently replacing a saw blade according to claim 5, wherein: A saw blade (14) is arranged between the disc (11) and the rubber strip (10). A through hole (15) is formed in the saw blade (14). The three rotating shafts (8) are all slidably connected to the through hole (15). One side of the saw blade (14) abuts against the bottom of the rubber strip (10).

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