Oblique tuyere structure of jig saw and jig saw

Abstract

The utility model aims to solve the problem that chippings are easy to enter an air inlet and an air outlet in the existing jig saw. The inclined air port structure of the jig saw and the jig saw are provided, the inclined air port structure comprises a shell of the jig saw, the interior of the shell is hollow, and a motor is arranged in the shell; an air port is formed in the shell, fan blades are arranged on an output rotating shaft of the motor, and the air port corresponds to the fan blades; the air inlet comprises an opening area on the shell and a baffle, the baffle is located in the middle of the opening area, and the side, close to the fan blades, of the baffle is arranged to be an inclined face. On one hand, chippings and the like are prevented from entering the shell, and on the other hand, airflow conveniently enters the fan blade area along the inclined plane, so that the fan blades can blow air to dissipate heat of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to an oblique air outlet structure of a jigsaw and the jigsaw. Background Art

[0002] An electric jigsaw is primarily a tool in which a motor drives a saw blade to achieve reciprocating motion. In order to meet the heat dissipation requirements of the motor, openings for air inlet and outlet are usually provided on the casing of the jigsaw, such as that shown in the patent with authorization announcement number CN210552243U, in which air inlets and outlets are provided on the side of the casing near the motor. However, in the existing air inlets and outlets of jigsaws, the air inlets are often in the form of direct openings, and the air inlets are directly opposite to the motor and other components inside the casing, especially the air inlets, which can easily cause debris or dust to be sucked into the casing, affecting the normal rotation of the motor. Therefore, there is a need for a jigsaw air inlet and outlet structure that can prevent debris. Summary of the invention

[0003] The utility model aims to solve the deficiencies of the prior art and provide an oblique air outlet structure of a jigsaw and a jigsaw.

[0004] In order to solve the above problems, the utility model adopts the following solutions:

[0005] A slanted air vent structure for a jigsaw comprises a shell of the jigsaw, wherein the interior of the shell is arranged to be hollow, and a motor is arranged inside the shell; an air vent is arranged on the shell, and fan blades are arranged on the output shaft of the motor, and the air vent and the fan blades are arranged correspondingly; the air vent comprises an air inlet, and the air inlet comprises an opening area and a baffle on the shell, wherein the baffle is located in the middle of the opening area, and a side of the baffle close to the fan blade is arranged as an inclined surface.

[0006] Furthermore, a fan sleeve is provided in the shell, the fan sleeve is fixedly provided in the shell, and the fan blades are rotatably provided inside the fan sleeve; an opening corresponding to the air outlet is provided on the fan sleeve.

[0007] Furthermore, a blocking strip extending downward to a set length is provided on the upper edge of the opening of the fan sleeve on one side close to the air inlet.

[0008] Furthermore, the upper edge of the baffle is higher than the lower edge of the baffle bar; in the horizontal direction, a gap is provided between the upper edge of the baffle plate and the lower edge of the baffle bar.

[0009] Furthermore, gaps are provided between the upper and lower parts of the baffle and the shell.

[0010] Furthermore, the air outlet also includes an air outlet, and the air outlet and the air inlet are symmetrically arranged on both sides of the shell with respect to the fan blade.

[0011] Furthermore, the air outlet is provided with a shielding structure for preventing contact with the fan.

[0012] Furthermore, the fan blades include a connecting piece and a plurality of fan blades arranged perpendicular to the connecting piece, the connecting piece is fixedly connected to the rotating shaft of the motor; the fan blades are arranged in a circle in a dispersed manner about the rotating shaft of the motor.

[0013] Furthermore, a connecting ring is provided on one side of the fan piece away from the connecting piece.

[0014] A jigsaw comprises the above-mentioned inclined air outlet structure.

[0015] The beneficial effects of the utility model are:

[0016] By setting a baffle with an inclined surface at the air inlet, on the one hand, debris is prevented from entering the shell, and on the other hand, it is convenient for airflow to enter the fan blade area along the inclined surface, so that the fan blade can blow air to dissipate heat for the motor;

[0017] By setting a baffle on the fan cover and cooperating with the baffle, the air inlet can be better shielded;

[0018] The safety of using the jigsaw is improved by arranging a shielding structure at the air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structure of Example 1 is shown in FIG. Figure 1 ;

[0020] Figure 2 The overall structure of Example 1 is shown in FIG. Figure 2 ;

[0021] Figure 3 for Figure 2 A local enlarged view of area A;

[0022] Figure 4 This is a front view of the overall structure of Example 1;

[0023] Figure 5 It is an exploded view of the overall structure of Example 1;

[0024] Figure 6 Schematic diagram of the combination of the rotating shaft and the fan blades of the motor of Example 1 Figure 1 ;

[0025] Figure 7 Schematic diagram of the combination of the rotating shaft and the fan blades of the motor of Example 1 Figure 2 ;

[0026] Figure 8 This is a schematic diagram of the inner side of the baffle on the shell of Example 1.

[0027] Description of the symbols in the accompanying drawings: shell 1, air inlet 2, baffle 21, air outlet 3, shielding structure 31, fan blades 4, connecting pieces 41, fan pieces 42, connecting rings 43, fan sleeve 5, baffle bars 51, motor 6. DETAILED DESCRIPTION

[0028] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0029] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the figures only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0030] Embodiment 1:

[0031] like Figures 1 to 8 As shown, a slanted air inlet structure of a jigsaw includes a casing 1 of the jigsaw, the interior of the casing 1 is set to be hollow, and a motor 6 is set inside the casing 1; an air inlet is also set on the outside of the casing 1, and a fan blade 4 is set on the output shaft of the motor 6, and the air inlet and the fan blade 4 are set correspondingly; the air inlet includes an air inlet 2, and the air inlet 2 includes an opening area on the casing 1 and a baffle 21, the baffle 21 is located in the middle of the opening area, and the side of the baffle 21 close to the fan blade 4 is set as an inclined surface. The baffle 21 is set to block the air inlet to a certain extent to prevent debris from entering the interior of the casing 1, and the side of the baffle 21 close to the fan blade 4 is set as an inclined surface, so that a gap can be left between the baffle 21 and the fan blade 4, so that the gas can enter the casing 1 along the inclined surface.

[0032] The shell 1 is also provided with a fan cover 5, which is fixedly arranged in the shell 1, and the fan blades 4 are rotatably arranged inside the fan cover 5; the fan cover 5 is provided with an opening corresponding to the air outlet; the fan cover 5 is used to protect and limit the fan blades 4.

[0033] The fan blade 4 includes a connecting piece 41 and a plurality of fan blades 42 arranged perpendicular to the connecting piece 41. The connecting piece 41 is fixedly connected to the rotating shaft of the motor 6. The fan blades 42 are arranged in a circle in a scattered manner about the rotating shaft of the motor 6. In this example, the fan blades 42 are flat straight plates. In order to enhance the stability of the fan blades 42 when rotating, a connecting ring 43 is further arranged on the side of the fan blades 42 away from the connecting piece 41, and all the fan blades 42 are fixed by the connecting ring 43.

[0034] The upper edge of the opening of the fan sleeve 5 on the side close to the air inlet 2 is also provided with a baffle 51 extending downward to a set length. The upper edge of the baffle 21 is higher than the lower edge of the baffle 51, making it difficult to see the fan blades 4 inside the housing 1 from the front side, effectively blocking the flying chips when the jigsaw is working from entering the rotating working area of ​​the fan blades 4 and the motor 6; in the horizontal direction, a gap is provided between the upper edge of the baffle 21 and the lower edge of the baffle 51 to meet the air intake requirements. It should be noted that in this example, gaps are provided between the upper and lower parts of the baffle 21 and the housing 1.

[0035] The air outlet also includes an air outlet 3, and the air outlet 3 and the air inlet 2 are symmetrically arranged on both sides of the housing 1 about the fan blades 4. Considering that there is airflow from the inside of the housing 1 to the outside at the air outlet 3, there is no need to set an oblique air outlet structure at the air outlet 3, but in order to prevent direct contact with the fan blades 4 and cause danger, a shielding structure 31 is also arranged at the air outlet 3, and in this example, the shielding structure 31 is a gear lever.

[0036] A jigsaw comprises the above-mentioned motor 6 inclined air outlet structure.

[0037] During the implementation process, a baffle 21 with an inclined surface is set at the position of the air inlet 2, which can prevent debris from entering the interior of the shell 1 on the one hand, and facilitate the airflow to enter the fan blade 4 area along the inclined surface on the other hand, so that the fan blade 4 can blow air to dissipate heat for the motor 6; a baffle 51 is set on the fan cover 5, which cooperates with the baffle 21 to better shield the air inlet 2; and a shielding structure 31 is set at the air outlet 3 to improve the safety of the use of the curved saw.

[0038] The above description is only a specific example of the utility model and does not constitute any limitation to the utility model. Obviously, for professionals in this field, after understanding the content and principle of the utility model, it is possible to make various modifications and changes in form and details without departing from the principle and structure of the utility model, but these modifications and changes based on the idea of ​​the utility model are still within the scope of protection of the claims of the utility model.

Claims

1. A slanted air outlet structure for a jigsaw, comprising a casing (1) of the jigsaw, wherein the interior of the casing (1) is arranged to be hollow, and a motor (6) is arranged inside the casing (1); the characteristics are as follows: An air outlet is provided on the housing (1), a fan blade (4) is provided on the output shaft of the motor (6), and the air outlet and the fan blade (4) are provided correspondingly; the air outlet comprises an air inlet (2), the air inlet (2) comprises an opening area on the housing (1) and a baffle (21), the baffle (21) is located in the middle of the opening area, and a side of the baffle (21) close to the fan blade (4) is provided as an inclined surface.

2. The oblique air vent structure of a jigsaw according to claim 1, characterized in that: A fan sleeve (5) is also provided in the housing (1); the fan sleeve (5) is fixedly arranged in the housing (1); the fan blades (4) are rotatably arranged inside the fan sleeve (5); and an opening corresponding to the air outlet is provided on the fan sleeve (5).

3. The oblique air vent structure of a jigsaw according to claim 2, characterized in that: The upper edge of the opening of the fan sleeve (5) on one side close to the air inlet (2) is also provided with a blocking strip (51) extending downwards to a set length.

4. The oblique air vent structure of a jigsaw according to claim 3, characterized in that: The upper edge of the baffle plate (21) is higher than the lower edge of the baffle bar (51); in the horizontal direction, a gap is provided between the upper edge of the baffle plate (21) and the lower edge of the baffle bar (51).

5. The oblique air vent structure of a jigsaw according to claim 3, characterized in that: Gaps are provided between the upper part and the lower part of the baffle (21) and the housing (1).

6. The oblique air vent structure of a jigsaw according to claim 1, characterized in that: The air outlet further comprises an air outlet (3), and the air outlet (3) and the air inlet (2) are symmetrically arranged on both sides of the housing (1) with respect to the fan blade (4).

7. The oblique air vent structure of a jigsaw according to claim 6, characterized in that: The air outlet (3) is provided with a shielding structure (31) for preventing contact with the fan.

8. The oblique air vent structure of a jigsaw according to claim 1, characterized in that: The fan blades (4) comprise a connecting piece (41) and a plurality of fan blades (42) arranged perpendicular to the connecting piece (41); the connecting piece (41) is fixedly connected to the rotating shaft of the motor (6); and the fan blades (42) are arranged in a scattered manner around the rotating shaft of the motor (6).

9. The oblique air vent structure of a jigsaw according to claim 8, characterized in that: A connecting ring (43) is also provided on the side of the fan sheet (42) away from the connecting sheet (41).

10. A jigsaw, characterized in that: It comprises the oblique tuyere structure as described in any one of claims 1 to 9.

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