CN221891029U - Reciprocating electric tool - Google Patents
Reciprocating electric tool Download PDFInfo
- Publication number
- CN221891029U CN221891029U CN202420357358.9U CN202420357358U CN221891029U CN 221891029 U CN221891029 U CN 221891029U CN 202420357358 U CN202420357358 U CN 202420357358U CN 221891029 U CN221891029 U CN 221891029U
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- guide wheel
- assembly
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- power tool
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- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 238000007493 shaping process Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 abstract description 12
- 238000005034 decoration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The utility model relates to a reciprocating electric tool, which comprises a shell, a motor assembly arranged in the shell, a transmission assembly connected with the motor assembly, a reciprocating rod driven by the transmission assembly and a cutter lifting assembly connected with the transmission assembly, wherein the reciprocating rod drives a saw blade to reciprocate in the up-down direction; the reciprocating power tool also includes a truing mechanism driven by the lift bar, the truing mechanism including a blade assembly contacting a surface of the workpiece, the blade assembly being located on an underside of the guide wheel. According to the utility model, the shaping mechanism is arranged on the curve saw, so that the saw blade performs sawing operation and simultaneously performs burr treatment on the surface of a workpiece, burrs generated in the sawing process are eliminated, and the smoothness of a cutting surface is maintained; in addition, the shaping mechanism is developed and designed on the basis of the cutter lifting assembly, namely, the existing cutter lifting rod is utilized to drive the shaping mechanism to move, so that the structure is ingenious, and the structure of the curve saw is more compact.
Description
[ Field of technology ]
The utility model relates to the technical field of electric tools, in particular to a reciprocating electric tool for occasions such as decoration, construction and the like.
[ Background Art ]
The reciprocating saw and the curve saw are used for cutting timber, plastic and other materials and are widely applied to the fields of household, decoration and the like. In actual operation, the motion conversion mechanism of the reciprocating electric tool converts the rotary motion of the motor assembly into the reciprocating motion of the reciprocating rod so as to drive the saw blade to perform high-frequency cutting operation.
In order to prevent burrs from being generated in the cutting process, a conventional reciprocating type electric tool is provided with a pressing plate on a bottom plate, and the pressing plate is pressed on the surface of a workpiece to reduce the burrs. However, the pressing plate can only reduce the generation of burrs to a certain extent, and burrs still can be generated on the cutting surface due to factors such as uneven surface of a workpiece in the cutting process.
In view of the above, it is desirable to provide an improved reciprocating power tool that overcomes the shortcomings of the prior art.
[ utility model ]
In view of the shortcomings of the prior art, the utility model aims to provide a reciprocating electric tool capable of efficiently removing burrs.
The utility model solves the problems in the prior art by adopting the following technical scheme: the reciprocating electric tool comprises a shell, a motor assembly arranged in the shell, a transmission assembly connected with the motor assembly, a reciprocating rod driven by the transmission assembly and a cutter lifting assembly connected with the transmission assembly, wherein the reciprocating rod drives the saw blade to reciprocate in the up-down direction, the cutter lifting assembly comprises a cutter lifting rod connected with the transmission assembly, a guide wheel bracket driven by the cutter lifting rod and a guide wheel arranged on the guide wheel bracket, and the guide wheel is abutted to the saw blade; the reciprocating power tool further includes a truing mechanism driven by the lift bar, the truing mechanism including a blade assembly contacting a surface of the workpiece, the blade assembly being located on an underside of the guide wheel.
The further improvement scheme is as follows: the cutter lifting assembly comprises a guide pin connected between the cutter lifting rod and the guide wheel bracket, the shaping mechanism comprises a driving plate positioned on the opposite side of the blade assembly, and the guide pin drives the driving plate and the guide wheel bracket to move.
The further improvement scheme is as follows: the drive plate comprises a through hole which penetrates through the guide plate, the guide pin comprises a guide pin main body, and the lower end of the guide pin main body extends through the through hole and abuts against the drive surface of the guide wheel bracket.
The further improvement scheme is as follows: the guide pin includes a shaft portion penetrating the guide pin body, and the shaft portion abuts against the upper surface of the drive plate.
The further improvement scheme is as follows: the cutter lifting assembly comprises a pivot penetrating through the guide wheel bracket, and the driving surface and the guide wheels are positioned on two sides of the pivot.
The further improvement scheme is as follows: the shaping mechanism comprises a connecting plate rotatably connected to the pivot, and the blade assembly is mounted at the lower end of the connecting plate.
The further improvement scheme is as follows: the guide wheel bracket includes a pair of side walls extending from a lower end of the drive surface toward the guide wheel, the connecting plate is located between the pair of side walls, and a connecting pin extends through the pair of side walls and the guide wheel to rotatably connect the guide wheel to the guide wheel bracket.
The further improvement scheme is as follows: the connecting plate comprises an avoidance section arranged between the pivot and the blade assembly, the avoidance section is provided with a concave avoidance area, and the guide wheel at least partially extends into the avoidance area.
The further improvement scheme is as follows: the guide wheel bracket comprises a slot penetrating through the driving surface, and the shaping mechanism comprises a middle plate connected with the driving plate and the connecting plate, and the middle plate extends to penetrate through the slot.
Compared with the prior art, the utility model has the following beneficial effects: by arranging the shaping mechanism on the curve saw, the saw blade performs sawing operation and simultaneously performs burr treatment on the surface of the workpiece, so that burrs generated in the sawing process are eliminated, and the smoothness of a cutting surface is maintained; in addition, the shaping mechanism is developed and designed on the basis of the cutter lifting assembly, namely, the existing cutter lifting rod is utilized to drive the shaping mechanism to move, so that the structure is ingenious, and the structure of the curve saw is more compact. The connecting plate is arranged between the pair of side walls, and the avoiding section and the avoiding area formed by the avoiding section are arranged on the connecting plate, so that the structure of the jig saw is further compact.
[ Description of the drawings ]
FIG. 1 is a schematic view of a reciprocating power tool according to a preferred embodiment of the present utility model;
FIG. 2 is a schematic view of the drive components of the reciprocating power tool of FIG. 1;
FIG. 3 is a schematic illustration of the connection of the lift blade assembly and the truing mechanism in the drive unit of FIG. 2;
fig. 4 is a schematic view of the structure of the transmission gear in the driving part shown in fig. 2.
[ Detailed description ] of the invention
The utility model will be described in further detail with reference to the drawings and embodiments.
The terminology used in the present utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The words such as "upper", "lower", "front", "rear", "left", "right", etc., indicating an azimuth or a positional relationship are merely based on the azimuth or the positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices/elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
Referring to fig. 1, a reciprocating power tool according to a preferred embodiment of the present utility model relates to a jig saw 100, on which a saw blade 200 is detachably mounted to perform sawing operations on wood, plastic, etc. The jig saw 100 includes a housing 1, a driving member mounted in the housing 1, a base 7 connected to a lower end of the housing 1, a control unit provided in the housing 1, and a switch unit 9 mounted in the housing 1, the driving member and the switch unit 9 being connected to the control unit, respectively.
Referring to fig. 2, the driving component includes a motor assembly 2 installed in the casing 1, a transmission assembly 3 connected to the motor assembly 2, a knife lifting assembly 6 connected to the transmission assembly 3, a reciprocating rod 4 driven by the transmission assembly 3, and a clamping mechanism 5 disposed at a lower end of the reciprocating rod 4, wherein the saw blade 200 is detachably installed in the clamping mechanism 5, and the motor assembly 2 drives the reciprocating rod 4 to move through the transmission assembly 3, so as to drive the saw blade 200 to reciprocate in an up-down direction; meanwhile, the motion of the transmission assembly 3 drives the knife lifting assembly 6 to move so as to drive the saw blade 200 to swing. The blade lifting assembly 6 can improve the working efficiency of the saw blade 200 during sawing.
Preferably, the clamping mechanism 5 has a quick clamping function, and can be a one-hand quick clamp or a two-hand quick clamp, so that a user can conveniently disassemble and assemble the saw blade 200 without tools.
Referring to fig. 1, the casing 1 includes a grip portion 11 for a user to grasp, a main housing 12 for accommodating the motor assembly 2, the transmission assembly 3 and the reciprocating lever 4, and a battery pack mounting portion 13 connected to rear end portions of the grip portion 11 and the main housing 12, and the grip portion 11 and the main housing 12 are spaced apart to form a space 14 for a user's hand to rest.
Further, the switch assembly 9 is mounted on the holding portion 11, and the switch assembly 9 is provided with a switch trigger for triggering the motor assembly 2; a battery pack (not shown) for supplying power to the motor assembly 2 is detachably mounted to the battery pack mounting portion 13, and a control assembly is provided at the rear side of the motor assembly 2 and extends to the battery pack mounting portion 13.
Further, the control component is electrically connected between the battery pack and the motor component 2, and controls the battery pack to discharge the motor component 2, and the switch component 9 is also electrically connected to the control component.
Referring to fig. 2 and 3, the transmission assembly 3 includes a transmission gear 31 engaged with the motor teeth 21 of the motor assembly 2, a crank pin 32 mounted on the transmission gear 31, and a counterweight 33 mounted on the transmission gear 31, and the reciprocating lever 4 is connected to the crank pin 32 and moves up and down by the crank pin 32.
Further, the driving gear 31 has a cylindrical driving body 311, an eccentric block 312 protruding from an end surface of the driving body 311, and an eccentric portion 313 protruding from an end surface of the eccentric block 312, the driving body 311 has a tooth shape 3111 formed on an outer periphery thereof, the driving body 311 is externally engaged to the motor teeth 21 of the motor assembly 2 via the tooth shape 3111, the eccentric block 312 is mounted in the oval hole of the counterweight 33 to drive the counterweight 33 to move up and down, the motor teeth 21 drive the driving gear 31 to move, and drive the counterweight 33 and the reciprocating rod 4 to reciprocate in opposite directions.
Further, the knife raising assembly 6 is connected to the eccentric portion 313, and the motion of the transmission gear 31 drives the knife raising assembly 6 to move.
In the present embodiment, the reciprocating lever 4 is located at the front end of the transmission assembly 3 and is mounted in the case cover of the transmission assembly 3.
In the present embodiment, the reciprocating lever 4 is disposed substantially perpendicularly to the axis of the motor assembly 2.
Referring to fig. 1, the base 7 has a substantially rectangular plate structure and a flat bottom surface, which abuts against the machined surface of the workpiece during the cutting operation, and the saw blade 200 protrudes from the lower surface of the base 7 to machine the workpiece.
Referring to fig. 2 to 4, the knife raising assembly 6 includes a knife raising bar 61 connected to the transmission assembly 3, a guide wheel support 63 driven by the knife raising bar 61, a guide pin 62 connected between the knife raising bar 61 and the guide wheel support 63, a guide wheel 64 mounted on the guide wheel support 63, and a pivot 66 penetrating the guide wheel support 63, wherein the guide wheel support 63 pivots about the pivot 66, and the guide wheel 64 abuts against the saw blade 200.
In the present embodiment, the cutter lifter 61 is coupled to the eccentric portion 313 of the transmission gear 31.
The working principle of the knife lifting assembly 6 is as follows: the transmission gear 31 rotates under the action of the motor assembly 2, the eccentric part 313 drives the cutter lifting rod 61 to reciprocate up and down, the lower end 611 of the cutter lifting rod 61 acts on the upper end of the guide pin 62, the lower end of the guide pin 62 is abutted against the driving surface 631 of the guide wheel bracket 63, and the guide wheel 64 at the other end is controlled to be intermittently lifted by utilizing the lever principle, so that the saw blade 200 is driven to lift the cutter without stopping jumping in the cutting process, and the cutting efficiency is improved.
In this embodiment, the driving surface 631 and the guide roller 64 are located on both sides of the pivot 66. Further, the guide pulley bracket 63 includes a pair of side walls 632 extending from a lower end of the driving surface 631 toward the guide pulley 64, and a connecting pin 65 extends through the pair of side walls 632 and the guide pulley 64 to rotatably connect the guide pulley 64 to the guide pulley bracket 63.
In this embodiment, the guide wheel 64 includes a contact ring for abutting against the saw blade 200, and the contact ring is a disc with a groove in the middle, and the saw blade 200 extends into the groove and moves along the groove.
As shown in fig. 2 and 3, the jig saw 100 further includes a shaping mechanism 8 driven by the lifting bar 61, wherein the shaping mechanism 8 includes a blade assembly 88 contacting the surface of the workpiece, a driving plate 81 located on the opposite side of the blade assembly 88, a connecting plate 83 rotatably connected to the pivot 66, and a middle plate 82 connecting the driving plate 81 and the connecting plate 83, the blade assembly 88 is mounted on the lower end of the connecting plate 83, and the blade assembly 88 is located on the lower side of the guide wheel 64. Similar to the principle of lifting the knife, the driving plate 81 drives the connecting plate 83 to pivot around the pivot 66 under the action of the lifting bar 61, and the lower blade assembly 88 is controlled to intermittently contact the surface of the workpiece to cut or control the blade assembly 88 to retract by utilizing the lever principle. By arranging the shaping mechanism 8 on the jig saw 100, the saw blade 200 performs sawing operation and simultaneously performs burr treatment on the surface of the workpiece, so that burrs generated in the sawing process are eliminated, and the smoothness of a cutting surface is maintained; in addition, the shaping mechanism 8 is developed and designed based on the cutter lifting assembly 6, that is, the existing cutter lifting rod 61 is utilized to drive the shaping mechanism 8 to move, so that the structure is ingenious, and the structure of the jig saw 100 is more compact.
In the present embodiment, the lifter bar 61 simultaneously moves the driving plate 81 and the guide pulley bracket 63 via the guide pin 62. Specifically, the driving plate 81 includes a through hole 811, the guide pin 62 includes a guide pin body 621 and a shaft portion 622 penetrating the guide pin body 621, the lower end of the guide pin body 621 extends through the through hole 811 and abuts against the driving surface 631 of the guide pulley bracket 63, and the shaft portion 622 abuts against the upper surface of the driving plate 81 through an additional portion protruding from the guide pin body 621.
In this embodiment, the idler bracket 63 includes a slot 633 extending through the drive surface 631, and the intermediate plate 82 extends through the slot 633. Further, the intermediate plate 82 is provided with a pair, and the pair of intermediate plates 82 extend from both sides of the through hole 811.
Referring to fig. 2, the connecting plate 83 is disposed between the pair of side walls 632, so that the structure of the jig saw 100 is more compact.
In the present embodiment, the connecting plate 83 includes a relief segment 831 disposed between the pivot 66 and the blade assembly 88, the relief segment 831 is formed with a concave relief area 832, and the guide wheel 64 extends at least partially into the relief area 832, so that the structure of the jig saw 100 is further compact.
According to the utility model, the shaping mechanism 8 is arranged on the jig saw 100, so that the saw blade 200 performs sawing operation and simultaneously performs burr treatment on the surface of a workpiece, burrs generated in the sawing process are eliminated, and the smoothness of a cutting surface is maintained; in addition, the shaping mechanism 8 is developed and designed based on the cutter lifting assembly 6, that is, the existing cutter lifting rod 61 is utilized to drive the shaping mechanism 8 to move, so that the structure is ingenious, and the structure of the jig saw 100 is more compact. The connecting plate 83 is disposed between the pair of side walls 632, and the relief section 831 and the relief area 832 formed by the relief section 831 are provided on the connecting plate 83, so that the structure of the jig saw 100 is further made compact.
The present utility model is not limited to the above-described embodiments. Those skilled in the art will readily appreciate that many other alternatives to the reciprocating power tool of the present utility model are possible without departing from the spirit and scope of the present utility model. The protection scope of the present utility model is subject to the claims.
Claims (9)
1. The reciprocating electric tool comprises a shell, a motor assembly arranged in the shell, a transmission assembly connected with the motor assembly, a reciprocating rod driven by the transmission assembly and a cutter lifting assembly connected with the transmission assembly, wherein the reciprocating rod drives the saw blade to reciprocate in the up-down direction, the cutter lifting assembly comprises a cutter lifting rod connected with the transmission assembly, a guide wheel bracket driven by the cutter lifting rod and a guide wheel arranged on the guide wheel bracket, and the guide wheel is abutted to the saw blade; the method is characterized in that: the reciprocating power tool further includes a truing mechanism driven by the lift bar, the truing mechanism including a blade assembly contacting a surface of the workpiece, the blade assembly being located on an underside of the guide wheel.
2. The reciprocating power tool of claim 1, wherein: the cutter lifting assembly comprises a guide pin connected between the cutter lifting rod and the guide wheel bracket, the shaping mechanism comprises a driving plate positioned on the opposite side of the blade assembly, and the guide pin drives the driving plate and the guide wheel bracket to move.
3. The reciprocating power tool of claim 2, wherein: the drive plate comprises a through hole which penetrates through the guide plate, the guide pin comprises a guide pin main body, and the lower end of the guide pin main body extends through the through hole and abuts against the drive surface of the guide wheel bracket.
4. A reciprocating power tool as claimed in claim 3, wherein: the guide pin includes a shaft portion penetrating the guide pin body, and the shaft portion abuts against the upper surface of the drive plate.
5. The reciprocating power tool of claim 4, wherein: the cutter lifting assembly comprises a pivot penetrating through the guide wheel bracket, and the driving surface and the guide wheels are positioned on two sides of the pivot.
6. The reciprocating power tool of claim 5, wherein: the shaping mechanism comprises a connecting plate rotatably connected to the pivot, and the blade assembly is mounted at the lower end of the connecting plate.
7. The reciprocating power tool of claim 6, wherein: the guide wheel bracket includes a pair of side walls extending from a lower end of the drive surface toward the guide wheel, the connecting plate is located between the pair of side walls, and a connecting pin extends through the pair of side walls and the guide wheel to rotatably connect the guide wheel to the guide wheel bracket.
8. The reciprocating power tool of claim 7, wherein: the connecting plate comprises an avoidance section arranged between the pivot and the blade assembly, the avoidance section is provided with a concave avoidance area, and the guide wheel at least partially extends into the avoidance area.
9. The reciprocating power tool of claim 8, wherein: the guide wheel bracket comprises a slot penetrating through the driving surface, and the shaping mechanism comprises a middle plate connected with the driving plate and the connecting plate, and the middle plate extends to penetrate through the slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420357358.9U CN221891029U (en) | 2024-02-26 | 2024-02-26 | Reciprocating electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420357358.9U CN221891029U (en) | 2024-02-26 | 2024-02-26 | Reciprocating electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221891029U true CN221891029U (en) | 2024-10-25 |
Family
ID=93128141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420357358.9U Active CN221891029U (en) | 2024-02-26 | 2024-02-26 | Reciprocating electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221891029U (en) |
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2024
- 2024-02-26 CN CN202420357358.9U patent/CN221891029U/en active Active
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