TWI767744B - Saw tool - Google Patents

Abstract

A saw tool is provided, including: a shell, having a plurality of receiving holes; a rotation member, a first end portion of the rotation member configured to be connected with a power source, a second end portion of the rotation member having an insertion slot; and a driven assembly, the driven assembly being driven by the rotation member to be reciprocatably moved away or near the rotation member; a plurality of position restriction members, each position restriction member disposed within one said receiving hole; wherein the driven assembly includes a first end portion and a second end portion opposite to the first end portion, the first end portion is for connection with a tool, the second end portion movably inserted into the insertion slot.

Description

saw tool

The present invention relates to a saw tool.

The conventional saw can be divided into pneumatic and electric, mainly through the motor to drive a power member to rotate, and convert the power into a force that allows an output shaft to reciprocate, so as to drive the tool mounted on the shaft to reciprocate. . The power member and the output shaft can move relatively, and the output shaft can be driven by the power member to convert the rotational force into the reciprocating force. However, the rotational force of the power member cannot be completely converted into the reciprocating force. The force causes the deflection and vibration of the tool when the output shaft reciprocates, making it difficult to cut the material smoothly.

For conventional saw tools, such as Taiwan Patent No. 509117, the actuating body of the reciprocating stroke tool has a cylindrical rod segment followed by a corner bar segment and a continuous set of segments. The corner hole segment of the main sleeve body is aligned with the corner bar segment of the actuating body. However, when the conventional saw tool is reciprocating, the torsion force generated by the rotation of the connecting body tends to concentrate on the angle bar section, which is easy to cause breakage and damage. In addition, Taiwan Patent No. I707756, the power reciprocating saw system is driven by the motor to rotate the gear set and the eccentric disc to rotate, so that the eccentric shaft of the bearing section also rotates along the circumference, which drives the sliding member to rotate, and the sliding member rotates. The U-shaped groove of the moving shaft drives the blade to reciprocate, but has the disadvantages of large overall volume and complex structure.

Therefore, it is necessary to provide a new and progressive saw tool to solve the above problems.

The main purpose of the present invention is to provide a saw tool, which has a simple structure, is easy to manufacture, can prevent the saw from swinging and vibrate during use, and has a long service life.

In order to achieve the above object, the present invention provides a saw tool, which includes: a casing with a plurality of accommodating holes and a plurality of radially extending and protruding blocking parts; a rotating part, the first end of the rotating part is used for connecting a A power source, the second end of the rotating member is provided with a slot; and a driven component is movably penetrated through the casing along an axial direction, and the driven component is driven by the rotating component and is opposite to the rotating component. The reciprocating movement of the rotating piece away from or approaching, the first end of the driven component will not rotate relative to the housing; a plurality of limiting pieces, each of which is set in one of the accommodating holes, and each of the limiting pieces Combined between one of the accommodating holes and the first end of the driven component, in the axial direction, each of the blocking portions is arranged between any two of the accommodating holes and interferes with at least one of the limiting pieces. Each of the limiting pieces will not rotate relative to each of the accommodating holes; wherein, the portion where each of the limiting pieces is combined with the first end of the driven component has a non-circular cross-section in the radial direction; wherein, the driven The assembly includes a first end portion and an opposite second end portion, the first end portion is used for assembling a tool, and the second end portion is movably slidable in the slot; wherein, the saw tool further includes a A limiting auxiliary piece fixed to the housing, the rotating piece and the driven component are respectively arranged on the housing, the first end of the driven component is provided with a long groove extending along the axial direction, the limiting One end of the auxiliary piece is inserted into the long groove and can move relatively with the long groove.

1: Saw Tool

2: Power source

3: Tools

4: Hexagonal hole

5: Hexagonal shaft

6: screwdriver head

10: Shell

11: accommodating hole

12: Stopper

20, 20a: Turning parts

21,21': guide groove

22: crest section

23: Valley segment

24: Slot

30, 30a, 30b, 30c, 30d: Second shaft moving parts

31,31': first end

32,32': second end

321: Stop surface

33: Flat Cut

34: Studs

35: Stop surface

36: screw holes

37: Long slot

38: Groove

40, 40': limiter

41: Perforation

42: Hole Wall

43: Flat end face

44: Limit block

50: Linkage

51: Subject

52: Slider

53: Connection segment

54: Arm segment

55: Through hole

60: Positioning aids

61: Headgear Section

62: Locking section

621: connecting arm

70: Drive shaft

71: Drive gear

80: Ring tooth

81: Ring tooth

90: Planetary gear set

91: Planetary gear

100: seat body

101: Container

102: Shaft

103: Opening

200: Limit accessories

300: driven components

301: stop screw

302: latch

A: Axial

A1: Axial dimension

D1: The first radial

D2: Second radial

FIG. 1 is a use state diagram of a first preferred embodiment of the present invention.

FIG. 2 is a perspective view of a first preferred embodiment of the present invention.

FIG. 3 is an exploded view of a first preferred embodiment of the present invention.

3A is a partial exploded view of a second preferred embodiment of the present invention.

FIG. 4 is a partial schematic diagram of a first preferred embodiment of the present invention.

5 is a perspective view of a rotating member according to a first preferred embodiment of the present invention.

FIG. 6 and FIG. 7 are diagrams showing the use state of the reciprocating action according to a first preferred embodiment of the present invention.

8 is a perspective view of a second shaft moving member according to a third preferred embodiment of the present invention.

9 is a perspective view of a second shaft moving member according to a fourth preferred embodiment of the present invention.

FIG. 10 is a partial exploded view of a fifth preferred embodiment of the present invention.

11 is a partial exploded view of a sixth preferred embodiment of the present invention.

12 is a partial exploded view of a seventh preferred embodiment of the present invention.

13 is a partial exploded view of an eighth preferred embodiment of the present invention.

FIG. 14 is an exploded view of an eighth preferred embodiment of the present invention.

15 is a perspective view of a rotating member of an eighth preferred embodiment of the present invention.

16 is another exploded view of an eighth preferred embodiment of the present invention.

17 is a cross-sectional view of an eighth preferred embodiment of the present invention.

18 to 20 are diagrams of usage states of an eighth preferred embodiment of the present invention.

The following examples are only used to illustrate possible implementations of the present invention, but are not intended to limit the scope of protection of the present invention, and are described together first.

Please refer to FIGS. 1 to 3 , 4 to 7 , which show a first preferred embodiment of the present invention. The saw tool 1 of the present invention includes a housing 10 , a rotating member 20 , a driven component 300 and Plural limiters 40 .

The saw tool 1 may be a pneumatic reciprocating saw tool or an electric reciprocating saw tool. The casing 10 is provided with a plurality of accommodating holes 11 and a plurality of radially extending and protruding blocking portions 12 , the rotating member 20 and the driven component 300 are respectively disposed in the casing 10 ; a first end of the rotating member 20 For connecting a power source 2 (such as a pneumatic tool or an electric tool), a slot 24 is provided at a second end of the rotating member 20 . The driven component 300 is movably passed through the housing 10 along an axial direction A, and is driven by the rotating member 20 to reciprocate away from or approach the rotating member 20. The driven component 300 includes a first One end 31 and an opposite second end 32, the first end 31 of the driven component 300 is used for assembling a tool 3, the tool 3 is like a saw blade, the second end 32 of the driven component 300 The slot 24 is movably slidable. A plurality of the limiting pieces 40 , each of the limiting pieces 40 is disposed in one of the accommodating holes 11 , and each of the limiting pieces 40 is combined with one of the accommodating holes 11 and the first end 31 of the driven component 300 . During the time, each of the limiting members 40 will not rotate relative to each of the accommodating holes 11, and the portion where each of the limiting members 40 is combined with the first end 31 of the driven component 300 has a non-circular cross-section in the radial direction; In the axial direction A, each blocking portion 12 is disposed between any two of the accommodating holes 11 and interferes with at least one of the limiting members 40 . The driven member 300 includes a second shaft member 30, and the second shaft member 30 includes a first end portion 31 of the driven member 300 and a second end portion 32 of the driven member 300, whereby the The driven component 300 can stably move in a reciprocating manner to prevent the saw blade from swinging and vibrate during use, and to increase the strength against the rotational force of the first end 31 of the driven component 300, so the service life is long; It can also prevent the casing 10 from being worn for a long time.

The first end 31 of the driven component 300 and the second end 32 of the driven component 300 are detachably connected to each other; the first end 31 of the driven component 300 and the second end of the driven component 300 One of the parts 32 is provided with a stud 34 , and the other is provided with a screw hole 36 which is screwed with the stud 34 ; in this embodiment, the first end 31 of the driven component 300 is provided with the stud The hole 36, the second end 32 of the driven component 300 is provided With the stud 34, disassembly, replacement and stable combination can be achieved. Preferably, the driven component 300 further includes a plug, the plug is radially inserted into the first end 31 of the driven component 300 and the second end 32 of the driven component 300 to be inserted into the driven component 300. The screw hole 36 is inserted into the stud 34; the plug is a stop screw 301, and the stop screw 301 is screwed with the stud 34 and the hole wall of the screw hole 36 to enhance the bonding strength. Preferably, at least one groove 38 is formed on the outer periphery of the second end 32 of the driven component 300; in this embodiment, a plurality of the grooves are formed on the outer circumference of the second end 32 of the driven component 300 38. Each of the grooves 38 is in the form of a ring extending in the circumferential direction, so that each of the grooves 38 can allow lubricant (such as lubricating oil) to penetrate into it, so that the lubricant can be distributed on the first part of the rotating member 20 and the driven component 300. Between the two ends 32, the lubricating effect achieves smooth movement.

The rotating member 20 extends toward the axial direction A, the rotating member 20 has a guide groove 21, and the guide groove 21 extends around the axial direction A in a closed loop. The saw tool 1 further includes a linking member 50. The linking member 50 includes a main body 51 and at least one sliding piece 52 , the first end portion 31 of the driven component 300 and the second end portion 32 of the driven component 300 are connected to the main body 51 , and the sliding pieces 52 are arranged on the main body 51 Each of the sliding members 52 is at least partially slidably disposed in the guide groove 21 , and each of the sliding members 52 is located outside each of the limiting members 40 . Specifically, the main body 51 is a U-shaped frame. The main body 51 includes a connecting section 53 and two arm sections 54 connected to the connecting section 53 at intervals. The connecting section 53 has a through hole 55 through which the stud 34 passes through. The through hole 55 is provided, at least one arm segment 54 is provided with a sliding member 52 , the main body 51 is sleeved with the rotating member 20 , and the two arm segments 54 are located on different sides of the rotating member 20 . In this embodiment, On the opposite sides, the two arm segments 54 are displaced relative to each other to change the distance between each other, which is easy to disassemble and assemble. In this embodiment, the connecting section 53 and the two arm sections 54 are integrally formed.

The slot 24 defines the axial dimension A1, and the second end 32 of the driven component 300 is inserted into the slot 24 to a depth exceeding 1/3 of the axial dimension A1 of the slot 24, so that the driven The assembly 300 can stably move relative to the rotating member 20 and reduce vibration and torsional force generated during actuation.

Specifically, the first end 31 of the driven component 300 is further provided with a stop surface 35 on the axial direction A, and the second end 32 of the driven component 300 is provided with a blocking surface 35 on the axial direction A The stop surface 321 , the stop surface 35 of the first end portion 31 of the driven component 300 and the stop surface 321 of the second end portion 32 of the driven component 300 abut against the opposite sides of the connecting section 53 , so that Stably positioned and combined with each other.

Each of the limiting members 40 is made of non-metallic material to prevent the casing 10 from being worn out due to long-term use. The portion where each limiting member 40 is combined with at least one of the accommodating holes 11 has a non-circular cross-section in the radial direction, so each of the limiting members 40 can be positioned in at least one of the accommodating holes 11 without relative rotation. The first end 31 of the driven component 300 does not rotate relative to the housing 10 to achieve stable reciprocating movement.

The above-mentioned non-circular cross-section can be an ellipse, a semi-circle, a circular part, a polygon (such as a quadrilateral, a hexagon, an octagon, etc. but not limited thereto) or an irregular shape.

The first end of the rotating member 20 is a driving shaft, the driving shaft includes a hexagonal driving part, and the hexagonal driving part can be a hexagonal shaft 5 (FIG. 3) or a hexagonal hole 4 (FIG. 3A) ), the hexagonal hole 4 can be used for inserting a screwdriver head 6 (such as a double-head screwdriver), and the hexagonal driving part is used for the assembly of the power source 2 .

Each of the limiting members 40 is a collar, the collar is provided with a through hole 41 and a hole wall 42 constituting the through hole 41 , and each of the limiting members 40 is sleeved with the first end of the driven component 300 through the through hole 41 . part 31, the hole wall 42 and the first end part 31 of the driven component 300 abut against each other in a first radial direction D1 and a second radial direction D2, the first radial direction D1 is transverse to the second radial direction To D2; in this embodiment, the hole wall 42 is completely abutted against an outer peripheral surface of the first end portion 31 of the driven component 300; so that the first end portion 31 of the driven component 300 is not opposite to the through hole 41 Shaking.

A radial cross-section of the first end 31 of the driven component 300 is a non-circular shape (such as an ellipse, a semicircle, a part of a circle, a polygon (such as a quadrilateral, hexagon, octagon, etc.) but Not limited to this). In this embodiment, the first end portion 31 of the driven component 300 is provided with two radially opposite For the flat cut surfaces 33 on the two sides, the hole wall 42 is provided with two flat end surfaces 43 abutting against the first end 31 of the driven component 300 to facilitate processing and resist the first end of the driven component 300 the rotational force of the part 31 .

The guide groove 21 includes at least one wave crest section 22 and at least one wave trough section 23, and each wave crest section 22 and each wave trough section 23 are alternately arranged around the axial direction A; in this embodiment, the guide groove 21 is an O-shaped A loop, the O-ring loop is provided with a peak section 22 and a trough section 23 extending in different directions from the peak section 22, so that the rotating member 20 of the driven component 300 rotates one turn to make the The second shaft moving member 30 reciprocates along the axis A once, and it is not necessary to install a deceleration mechanism separately, so as to provide an appropriate reciprocating speed with a simple structure.

The saw tool 1 further includes a positioning aid 60 . The positioning aid 60 includes a headgear section 61 for connecting to the power source 2 and a locking section 62 . The locking section 62 includes two headgear sections 61 . The two connecting arms 621 are detachably connected to two opposite outer sides of the housing 10 , and the headgear section 61 can be fixed on the power source 2 , so that the saw tool 1 can be easily held with one hand when operating the saw tool 1 . It maintains the labor-saving and safe assembly of control, and the maintenance efficiency of its covering positioning and operation safety.

Please refer to FIG. 8 , which shows a third preferred embodiment of the present invention. A radial cross-section of the second shaft moving member 30 a is quadrilateral. Please refer to FIG. 9 , which shows a fourth preferred embodiment of the present invention. A radial section of the second shaft moving member 30 b is hexagonal. Please refer to FIG. 10 , which shows a fifth preferred embodiment of the present invention. Each of the limiting members 40 ′ includes a plurality of limiting blocks 44 . In this embodiment, the number of the limiting blocks 44 is two (but not limited to This), each of the limiting blocks 44 is in circumferential contact with each other to form the perforation, and each of the limiting blocks 44 radially abuts against the difference of the second shaft moving member 30d, which is beneficial to machining and requires machining accuracy Low.

Please refer to FIG. 11 , which shows a sixth preferred embodiment of the present invention. The connector is a plug 302 . Please refer to FIG. 12 , which respectively shows a seventh preferred embodiment of the present invention. The first end 31 ′ of the driven component 300 is provided with the stud 34 , and the second end 32 ′ of the driven component 300 is provided with the stud 34 . This screw hole is provided.

Please refer to FIG. 13 to FIG. 20, which show an eighth preferred embodiment of the present invention. The guide groove 21' of the rotating member 20a includes a plurality of the peak sections 22 and a plurality of the trough sections 23. The plurality of wave peak sections 22 and The plurality of wave valley sections 23 are alternately arranged around the axis A; the saw tool 1 further includes a ring tooth portion 80 and a planetary gear set 90 , the first end of the rotating member 20 is a drive shaft 70 , and the drive shaft 70 is provided with There is a driving gear 71, the ring gear 80 includes a ring gear 81, the ring gear 80 is connected to the rotating member 20a and moves in the same direction with the rotating member 20a, the planetary gear set 90 includes a plurality of planetary gears 91, the plurality of planetary gears 91 meshes with the driving gear 71 respectively, the plurality of planetary gears 91 are located in the ring tooth portion 80, the plurality of planetary gears 91 respectively engage the ring tooth 81 and drive the ring tooth portion 80; such a simple structure, easy to manufacture, to achieve The speed is reduced and the torque is increased, and the drive shaft 70 can directly drive the ring gear 80 to rotate, which can keep the output power from being consumed during the transmission process.

The ring tooth portion 80 is integrally connected to the rotating member 20 a. The saw tool 1 further includes a base body 100 . The base body 100 is provided with an accommodating groove 101 and a plurality of shaft portions 102 , and the plurality of shaft portions 102 are disposed in the accommodating groove 101 . , each of the planetary gears 91 is respectively rotatably arranged on one of the shaft portions 102, the receiving groove 101 is provided with a plurality of openings 103 corresponding to the plurality of planetary gears 91 and open to the side of the axial direction A, each of the openings 103 The size of is at least equal to (and may also be greater than) the size of each of the planetary gears 91 . In detail, the plurality of planetary gears 91 are directly placed and detached from the container 101 through one of the openings 103, and the plurality of openings 103 are communicated with each other, so as to achieve quick disassembly and assembly, and also resist the operation of the tool 3. Axial stress generated when .

In this embodiment, the saw tool 1 is further provided with a limiting accessory 200 that is fixedly connected (eg, locked, snapped) to the housing 10 . In this embodiment, the limiting accessory 200 is a screw rod. The first end portion 31' of the second shaft member 30c is provided with a long groove 37 extending along the axial direction A. An end portion of the limiting auxiliary member 200 is inserted into the long groove 37 and can be connected with the long groove. 37 relative movement, the limiting auxiliary member 200 passes through the limiting member 40, which can limit the second shaft moving member 30c to reciprocate along the axis A stably without deviation, and can also resist the second shaft movement the rotational force of the piece 30c.

2: Power source

3: Tools

10: Shell

60: Positioning aids

61: Headgear Section

62: Locking section

621: connecting arm

Claims (9)

A saw tool, comprising: a casing with a plurality of accommodating holes and a plurality of radially extending and protruding blocking parts; a rotating part, a first end of the rotating part is used for connecting a power source, one of the rotating parts The second end is provided with a slot; and a driven component is movably passed through the housing along an axial direction, and the driven component is driven by the rotating member to reciprocate away from or approach the rotating member When moving, the first end of the driven component will not rotate relative to the housing; a plurality of limit pieces, each limit piece is set in one of the accommodating holes, and each limit piece is combined with one of the accommodating holes and between the first end of the driven component, in the axial direction, each of the blocking parts is arranged between any two of the accommodating holes and interferes with at least one of the limiting pieces, each of the limiting pieces will not rotates relative to each of the receiving holes; wherein, the part where each of the limiting members is combined with the first end of the driven component has a non-circular cross-section in the radial direction; wherein, the driven component includes a first end and an opposite second end, the first end is used for assembling a tool, and the second end is movably slid in the slot; wherein, the saw tool further comprises a A limiting auxiliary piece, the rotating piece and the driven component are respectively arranged on the housing, the first end of the driven component is provided with a long groove extending along the axial direction, and an end of the limiting auxiliary piece is inserted into in the long groove and can move relative to the long groove. The saw tool of claim 1, wherein the first end of the driven member and the second end of the driven member are removably connected to each other. The saw tool as claimed in claim 2, wherein one of the first end of the driven component and the second end of the driven component is provided with a stud, and the other is provided with a stud bolted with each other the screw hole. The saw tool according to claim 3, wherein the rotating member extends toward the axial direction, the rotating member has a guide groove, the guide groove extends around the axial direction in a closed loop, and the driven component further includes a linking member , the linkage includes a main body and at least one sliding piece, the first end of the driven component and the second end of the driven component are connected to the main body, and each of the sliding pieces is arranged on the main body. The saw tool as claimed in claim 3, wherein the driven component further comprises a plug, the plug is radially inserted into the first end of the driven component and the second end of the driven component to Insert the screw hole and insert the stud. The saw tool of claim 1, wherein at least one groove is formed on the outer periphery of the second end of the driven component. The saw tool as claimed in claim 4, wherein the rotating member and the driven component are respectively disposed on the housing, and each of the sliding members is located outside each of the limiting members. The saw tool as claimed in claim 4, wherein the guide groove includes at least one wave crest section and at least one wave trough section, and each wave crest section and each wave trough section are alternately arranged around the axial direction; the saw tool further includes a ring tooth and A planetary gear set, the first end of the rotating member is a drive shaft, the drive shaft is provided with a drive gear, the ring gear portion includes a ring gear, the ring gear portion is connected to the rotating member and moves with the rotating member , the planetary gear set includes a plurality of planetary gears, the plurality of planetary gears are respectively engaged with the driving gear, the plurality of planetary gears are located in the ring tooth portion, and the plurality of planetary gears are respectively engaged with the ring teeth. The saw tool as claimed in claim 7, wherein the driven component further comprises a plug, the plug radially inserts the first end of the driven component and the second end of the driven component to insert the screw The hole is inserted into the stud; the plug is a set screw or a plug; the outer periphery of the second end of the driven component is provided with a plurality of grooves, and each of the grooves is a ring extending in the circumferential direction; The slot defines the axial dimension, and the depth of the second end of the driven component inserted in the slot exceeds 1/3 of the axial dimension of the slot; the main body is a U-shaped frame, and the main body is a U-shaped frame. It includes a connecting section and two arm sections that are connected to the connecting section at intervals, the connecting section is provided with a through hole, the stud passes through the through hole, at least one arm section is provided with a sliding member, and the main body is sleeved with the rotating The two arm segments are located on opposite sides of the rotating member; the first end of the driven component is provided with a stop surface on the axial direction, and the second end of the driven component is provided with a stop surface on the axis The upward blocking surface, the blocking surface of the first end of the driven component and the blocking surface of the second end of the driven component resist the opposite sides of the connecting section; each of the limiting members is one A collar, the collar is provided with a through hole and a hole wall constituting the through hole, each of the limiting members is sleeved with the first end of the driven component through the through hole, the hole wall and the first end of the driven component The parts abut against each other in a first radial direction and a second radial direction, the first radial direction is transverse to the second radial direction; the first end of the driven component is provided with two radially opposite sides The hole wall is provided with two flat end surfaces abutting against the first end of the driven component; each position where the limiting member is combined with one of the accommodating holes has a non-circular shape in the radial direction. The guide groove includes at least one wave crest section and at least one wave trough section, and each wave crest section and each wave trough section are alternately arranged around the axial direction; the saw tool further includes a ring tooth part and a planetary gear set, the first end The part is a drive shaft, the drive shaft is provided with a drive gear, the ring tooth part includes a ring tooth, the ring tooth part is connected to the rotating member and moves together with the rotating member, the planetary gear set includes a plurality of planetary gears, the plurality of The planetary gears respectively mesh with the driving gear, the plurality of planetary gears are located in the ring teeth, and the plurality of planetary gears are respectively engaged with the ring teeth; the ring teeth are integrally formed and connected to the rotating member, and the saw tool further includes a body, the The seat body is provided with an accommodating groove and a plurality of shaft portions, the plurality of shaft portions are arranged in the accommodating groove, and each of the planetary gears is rotatably arranged on one of the shaft portions, and the accommodating groove is provided with a plurality of corresponding planetary gears and facing toward the plurality of planetary gears. The opening on one side of the axial direction is open, and the size of each opening is at least equal to According to the size of each of the planetary gears; the saw tool further includes a positioning auxiliary device, the positioning auxiliary device includes a head cover section for connecting to the power source and a locking section, and the locking section includes two provided on the head cover section. The two connecting arms are detachably connected to two opposite outer sides of the casing.

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