Jig saw with scrap blowing function

Abstract

The jig saw with the scrap blowing function comprises a machine shell, a head shell assembly and a driving motor are arranged in the machine shell, an air guide block is arranged between the machine shell and the head shell assembly, and an air channel is formed between the air guide block and the head shell assembly. A chip blowing knob rotationally connected with the head shell assembly is arranged on the head shell assembly, and the air duct is controlled to be opened or closed when the chip blowing knob rotates; a reciprocating rod assembly is arranged in the head shell assembly, and when the driving motor works, the reciprocating rod assembly is driven to reciprocate relative to the head shell assembly; the reciprocating rod assembly comprises a guide rod body and a sliding groove, an eccentric wheel rotationally connected with the head shell assembly is arranged in the head shell assembly, and the eccentric wheel is connected with the sliding groove. The air volume can be conveniently adjusted through the scrap blowing knob, and universality is good. And through the integrally-formed reciprocating rod assembly, installation is convenient, and transmission is more reliable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of curve saw, concretely relates to a curve saw with scrap blowing function. BACKGROUND

[0002] Curve saw is a kind of commonly used cutting tool, and is widely used in daily life. Generally, the existing curve saw usually includes motor and blade, the motor drives the reciprocating rod to extend and retract, and the blade is installed on the reciprocating rod, so that the cutting function can be realized by the blade. The curve saw is usually provided with a fan blade, which is installed on the motor, and is used for blowing scrap. However, the existing curve saw only has a single air duct, and the air volume is not easy to adjust, so the versatility is poor. The reciprocating rod is usually installed in the head shell, and since the space in the head shell is small, the reciprocating rod needs to be connected to the cam on the motor, so the installation is relatively complicated. Therefore, it is necessary to design a curve saw with scrap blowing function to overcome the above difficulties. SUMMARY

[0003] The utility model discloses in view of prior art existing problem, design a kind of curve saw with scrap blowing function, the utility model discloses a kind of curve saw with scrap blowing function, and the utility model discloses the size of the air volume is conveniently adjusted by scrap blowing knob, and the versatility is good. The reciprocating rod assembly is integrally formed, which is convenient to install and reliable in transmission.

[0004] The utility model discloses a kind of curve saw with scrap blowing function, including shell, head shell component and drive motor are equipped in shell, air guide block is equipped between the shell and head shell component, and air duct is formed between the air guide block and head shell component;Blowing scrap knob is rotatably connected on the head shell component, and blowing scrap knob is rotated to control air duct to open or close;Reciprocating rod assembly is equipped in the head shell component, and drive motor works to drive reciprocating rod assembly to reciprocate relative to head shell component;The reciprocating rod assembly includes guide rod body and sliding slot, eccentric wheel is rotatably connected in the head shell component, and the eccentric wheel is connected with the sliding slot.

[0005] As preferred, the head shell component is rotatably connected with the blowing scrap knob, and the blowing scrap knob extends into the air duct;The blowing scrap knob includes knob body, rotating shaft and switch protrusion, and the switch protrusion is arranged on the rotating shaft;When the blowing scrap knob is rotated, the switch protrusion is rotated relative to the air duct.

[0006] As preferred, the head shell component is rotatably connected with the blowing scrap knob, and the blowing scrap knob extends into the air duct;The blowing scrap knob includes knob body, rotating shaft and switch protrusion, and the switch protrusion is arranged on the rotating shaft;When the blowing scrap knob is rotated, the switch protrusion is rotated relative to the air duct.

[0007] As preferred, the head shell component is rotatably connected with the blowing scrap knob, and the blowing scrap knob extends into the air duct;The blowing scrap knob includes knob body, rotating shaft and switch protrusion, and the switch protrusion is arranged on the rotating shaft;When the blowing scrap knob is rotated, the switch protrusion is rotated relative to the air duct.

[0008] Preferably, the rotating shaft and the switch protrusion are integrally formed, and a coplanar air guide surface is formed between the rotating shaft and the switch protrusion.

[0009] The installation holes facilitate the mounting of the chip removal knob onto the head shell assembly. When the air guide surface on the chip removal knob is in a vertical position, the air duct is fully open. When the chip removal knob is rotated, the switch protrusion rotates relative to the air duct, thus adjusting the airflow and facilitating air volume control. The limiting protrusion allows for easy control of the rotation position of the chip removal knob, facilitating air duct on / off control.

[0010] Preferably, a drive motor is installed inside the housing, and the motor shaft of the drive motor extends into the head shell assembly; the motor shaft of the drive motor is connected to the eccentric wheel, and when the drive motor drives the eccentric wheel to rotate, the reciprocating rod assembly rotates relative to the head shell assembly.

[0011] Preferably, the reciprocating rod assembly includes a guide rod body and a slide groove, wherein the guide rod body and the slide groove are integrally formed; the slide groove connects to the protrusion on the eccentric wheel.

[0012] Preferably, the head shell assembly includes a front cover, an oil seal cover fixing block is provided inside the front cover, and fasteners are provided between the oil seal cover fixing block and the front cover to fix the two; the reciprocating rod assembly is inserted through the oil seal cover fixing block and extends out from the front cover, and the bottom of the front cover is provided with an oil seal cover body that is detachably connected to it.

[0013] When the drive motor is working, it drives the eccentric wheel to rotate. When the eccentric wheel rotates, it drives the slide to move up and down. The slide and the guide rod body move synchronously. Since the guide rod body and the slide are integrally formed by welding, it is convenient to connect the slide with the protrusion of the eccentric wheel. By setting an oil seal cover, the opening end of the front cover is larger, which makes it convenient to directly install the reciprocating rod assembly into the head shell assembly.

[0014] Compared with the prior art, this utility model has the following advantages: 1. By setting a chip blowing knob, the air volume can be easily adjusted, resulting in better chip blowing effect and greater versatility; 2. The one-piece molded reciprocating rod assembly facilitates connection to the eccentric wheel, making it easier to install the reciprocating rod assembly into the head shell assembly; 3. A detachable oil seal cover is provided on the front cover, making the assembly of the reciprocating rod assembly more convenient. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a schematic diagram showing the air duct in the open position.

[0017] Figure 3 A schematic diagram showing the air duct in the closed state.

[0018] Figure 4 A three-dimensional view of the chip removal knob;

[0019] Figure 5 This is a 3D view of the reciprocating rod assembly;

[0020] Figure 6 This is a perspective view of the concealed housing of this utility model;

[0021] Figure 7 This is a schematic diagram of the head shell assembly;

[0022] The markings in the diagram are: 1. Housing; 2. Head housing assembly; 3. Drive motor; 4. Air guide block; 5. Chip blowing knob; 51. Knob body; 52. Rotating shaft; 53. Switch protrusion; 54. Air guide surface; 6. Reciprocating rod assembly; 61. Guide rod body; 62. Slide groove; 7. Eccentric wheel; 8. Mounting hole; 9. Limiting protrusion; 10. Oil seal cover fixing block; 11. Fastener; 12. Oil seal cover body; 13. Front cover. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0024] like Figures 1 to 7 As shown, this embodiment discloses a jigsaw with a chip-blowing function, including a housing 1, a head shell assembly 2 and a drive motor 3 inside the housing 1, an air guide block 4 between the housing 1 and the head shell assembly 2, forming an air duct between the air guide block 4 and the head shell assembly 2; a chip-blowing knob 5 rotatably connected to the head shell assembly 2 is provided on the head shell assembly 2, and the rotation of the chip-blowing knob 5 controls the opening or closing of the air duct; a reciprocating rod assembly 6 is provided inside the head shell assembly 2, and the drive motor 3 drives the reciprocating rod assembly 6 to reciprocate relative to the head shell assembly 2 when it is working; the reciprocating rod assembly 6 includes a guide rod body 61 and a slide groove 62, and an eccentric wheel 7 rotatably connected to the head shell assembly 2 is provided inside the head shell assembly 2, the eccentric wheel 7 being connected to the slide groove 62.

[0025] The head shell assembly 2 is rotatably connected to the slag-blowing knob 5, which extends into the air duct. The slag-blowing knob 5 includes a knob body 51, a rotating shaft 52, and a switch protrusion 53, which is disposed on the rotating shaft 52. When the slag-blowing knob 5 is rotated, the switch protrusion 53 rotates relative to the air duct. The head shell assembly 2 is provided with mounting holes 8 for mounting the slag-blowing knob 5, and the outer contour of the mounting holes 8 is adapted to the outer contour of the switch protrusion 53. The head shell assembly 2 is provided with two annularly distributed limiting protrusions 9, and the knob body 51 is disposed between the two limiting protrusions 9. The rotating shaft 52 and the switch protrusion 53 are integrally formed, and a coplanar air guide surface 54 is formed between the rotating shaft 52 and the switch protrusion 53.

[0026] A drive motor 3 is installed inside the housing 1, and the motor shaft of the drive motor 3 extends into the head shell assembly 2. The motor shaft of the drive motor 3 is connected to the eccentric wheel 7. When the drive motor 3 drives the eccentric wheel 7 to rotate, the reciprocating rod assembly 6 rotates relative to the head shell assembly 2. The reciprocating rod assembly 6 includes a guide rod body 61 and a slide groove 62, which are integrally formed. The slide groove 62 connects to a protrusion on the eccentric wheel 7. The head shell assembly 2 includes a front cover 13, and an oil seal cover fixing block 10 is provided inside the front cover 13. A fastener 11 is provided between the oil seal cover fixing block 10 and the front cover 13 to fix the two. The reciprocating rod assembly 6 is inserted through the oil seal cover fixing block 10 and extends out of the front cover 13. The bottom of the front cover 13 is provided with an oil seal cover body 12 that is detachably connected to it.

[0027] The specific operation process of this embodiment is as follows: The installation hole 8 facilitates the installation of the chip removal knob 5 onto the head shell assembly 2; when the air guide surface 54 on the chip removal knob 5 is in a vertical state, the air duct is fully open; when the chip removal knob 5 is rotated, the switch protrusion 53 rotates relative to the air duct, thus adjusting the airflow and facilitating air volume adjustment. The limiting protrusion 9 facilitates control of the rotation position of the chip removal knob 5, making it easier to control the opening and closing of the air duct.

[0028] When the drive motor 3 is working, it drives the eccentric wheel 7 to rotate. When the eccentric wheel 7 rotates, it drives the slide groove 62 to move up and down. The slide groove 62 moves synchronously with the guide rod body 61. Since the guide rod body 61 and the slide groove 62 are integrally formed by welding, it is convenient for the slide groove 62 to connect with the protrusion of the eccentric wheel 7. By setting the oil seal cover 12, the opening end of the front cover 13 is larger, which makes it convenient to directly install the reciprocating rod assembly 6 into the head shell assembly 2.

[0029] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A curve saw with dust blowing function, comprising a machine shell (1), a head shell assembly (2) and a driving motor (3) are arranged in the machine shell (1), characterized in that, The air guide block (4) is arranged between the casing (1) and the head shell assembly (2), and forms an air duct with the head shell assembly (2); the blowing chip knob (5) is rotatably connected to the head shell assembly (2), and the blowing chip knob (5) is extended into the air duct and controls the opening or closing of the air duct when rotating; the reciprocating rod assembly (6) is arranged in the head shell assembly (2), and the driving motor (3) drives the reciprocating rod assembly (6) to reciprocate relative to the head shell assembly (2) when working; the reciprocating rod assembly (6) comprises a guide rod body (61) and a sliding groove (62); the eccentric wheel (7) is rotatably connected to the head shell assembly (2), and the eccentric wheel (7) is connected to the sliding groove (62).

2. The curve saw with a dust blowing function according to claim 1, characterized in that, The head shell assembly (2) is rotatably connected with the blowing chip knob (5), and the blowing chip knob (5) is extended into the air duct; the blowing chip knob (5) comprises a knob body (51), a rotating shaft (52) and a switch protrusion (53), and the switch protrusion (53) is arranged on the rotating shaft (52); when the blowing chip knob (5) is rotated, the switch protrusion (53) is rotated relative to the air duct.

3. The curve saw with a dust blowing function according to claim 2, characterized in that, The head shell assembly (2) is provided with a mounting hole (8) for mounting the blowing chip knob (5), and the outer shape of the mounting hole (8) is matched with the outer shape of the switch protrusion (53).

4. The curve saw with dust blowing function according to claim 2, characterized in that, The head shell assembly (2) is provided with two annular limiting protrusions (9), and the knob body (51) is arranged between the two limiting protrusions (9).

5. The curve saw with dust blowing function according to claim 2, characterized in that, The rotating shaft (52) and the switch protrusion (53) are integrally formed, and the rotating shaft (52) and the switch protrusion (53) form a co-planar air guide surface (54).

6. The curve saw with a dust blowing function according to claim 1, characterized in that, The driving motor (3) is arranged in the casing (1), and the motor shaft of the driving motor (3) is extended into the head shell assembly (2); the motor shaft of the driving motor (3) is connected to the eccentric wheel (7), and when the driving motor (3) drives the eccentric wheel (7) to rotate, the reciprocating rod assembly (6) rotates relative to the head shell assembly (2).

7. The curve saw with a dust blowing function according to claim 6, characterized in that, The reciprocating rod assembly (6) comprises a guide rod body (61) and a sliding groove (62), and the guide rod body (61) and the sliding groove (62) are integrally formed; the sliding groove (62) is connected to the protrusion on the eccentric wheel (7).

8. The curve saw with dust blowing function according to claim 6, characterized in that, The head shell assembly (2) comprises a front cover (13), and the front cover (13) is provided with an oil seal cover fixing block (10); the oil seal cover fixing block (10) and the front cover (13) are provided with a fastener (11) for fixing the two; the reciprocating rod assembly (6) is inserted into the oil seal cover fixing block (10) and is extended out of the front cover (13), and the bottom of the front cover (13) is provided with an oil seal cover body (12) which is detachably connected to the front cover (13).

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