WO2016131412A1 - Outil électrique - Google Patents

Outil électrique Download PDF

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Publication number
WO2016131412A1
WO2016131412A1 PCT/CN2016/073879 CN2016073879W WO2016131412A1 WO 2016131412 A1 WO2016131412 A1 WO 2016131412A1 CN 2016073879 W CN2016073879 W CN 2016073879W WO 2016131412 A1 WO2016131412 A1 WO 2016131412A1
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WO
WIPO (PCT)
Prior art keywords
bottom plate
rail
power tool
saw blade
fixing member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/073879
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English (en)
Chinese (zh)
Inventor
陈国军
吉绍山
夏连明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Positec Power Tools Suzhou Co Ltd
Original Assignee
Positec Power Tools Suzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Positec Power Tools Suzhou Co Ltd filed Critical Positec Power Tools Suzhou Co Ltd
Publication of WO2016131412A1 publication Critical patent/WO2016131412A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
    • B23D45/16—Hand-held sawing devices with circular saw blades

Definitions

  • the invention relates to the field of power tools.
  • the existing power tools are generally electric circular saws, which are cut by a saw blade.
  • the slide rail portion of the existing electric saw blade is an action of cutting the saw blade downward by moving the bearing in the arc groove. Since the motion track during the saw blade cutting process is a circular arc, linear motion cannot be realized. When cutting downward, the operator needs to change the direction of the electric circular saw, so the electric circular saw has poor comfort in operation.
  • the power tool generally includes a saw blade for machining a workpiece, a body for accommodating the saw blade, a bottom plate for the workpiece and a bottom plate for passing the saw blade through the workpiece to cut the workpiece, and the body and the bottom plate generally rotate.
  • Connection, the saw blade and the fuselage of the power tool have a circular arc during the cutting process, so when the user grips the body to cut, the angle of the user's grip is constantly changing, resulting in more comfortable operation. difference.
  • the circular arc-shaped trajectory of the saw blade makes it difficult for the user to predict the final cutting position of the saw blade, and the position of the tool needs to be adjusted before and after the slot cutting. Increased difficulty in operation and requirements for operator experience and skill.
  • a power tool characterized in that the power tool comprises a fuselage, a cutting assembly and a connecting assembly; the cutting assembly comprises a saw blade for cutting a workpiece and a bottom plate for abutting against a surface of the workpiece when the workpiece is cut, A motor is provided in the fuselage for driving the saw blade to rotate, and the fuselage is linearly movably coupled to the bottom plate by the connecting assembly relative to the bottom plate.
  • the invention has the beneficial effects that when the user uses the power tool of the invention, the angle of the holding tool is kept unchanged, and the user does not need to change the holding direction, thereby improving the comfort of the user operation.
  • the movement trajectory of the saw blade is a straight line, so that the user can easily predict the cutting position of the saw blade, the operation difficulty and the low skill requirements for the operator.
  • the structure of the cutting width indication is used to indicate the cutting position of the saw blade, it is advantageous to simplify the setting of the cutting width indicating structure.
  • the connecting component comprises a fixing member fixedly connected to the fuselage and at least one fixedly connected to a guide rail of the bottom plate, the guide rail and the fixing member are relatively movable.
  • the guide rail is a guide post. Its orientation is better.
  • the guide rail is a cylindrical guide rail. This setup has the advantage of being easy to machine and assemble.
  • the connecting assembly comprises two rails, and the two rails are spaced apart on the bottom plate.
  • the plane formed by the longitudinally extending axes of the two guide rails is parallel to the plane in which the saw blade is located. This arrangement makes the structure more compact, reducing the size of the tool and making the tool more accessible.
  • a linear bearing is disposed between at least one of the two guide rails and the fixing member.
  • the provision of a linear bearing between the two makes the relative movement between the two smoother, avoiding the locking of the mechanism and improving the comfort of the user.
  • a linear bearing is disposed between the guide rail adjacent to the front end of the two guide rails and the fixing member.
  • the direction in which the rail and the fixing member move relative to each other is inclined with respect to the bottom plate.
  • the guide rail includes a first end fixedly connected to the bottom plate and a second end opposite to the first end, and the direction of advancement when cutting normally using the power tool is front, the first end Located on the front side of the second end.
  • an angle between the longitudinally extending axis of the guide rail and the bottom plate is 80° to 87°.
  • the angle between the longitudinally extending axis of the guide rail and the bottom plate is 82°. This setting can effectively prevent the rebound in the work process and improve the comfort and safety of the user operation.
  • the connecting assembly further includes a returning member that returns the bottom plate to an initial state away from the fixing member after the bottom plate is moved to a position close to the fixing member.
  • one end of the rail is fixedly connected to the bottom plate, and the other end of the rail is fixedly connected with an end cover through the fixing member, and one end of the returning member abuts the fixing member, and the other end of the returning member abuts Holding the end cover;
  • the rail includes a first rail and a second rail, the fixing member is provided with a first through hole and a second through hole, and the first rail and the second rail are fixedly connected at one end
  • the bottom plate, the other ends of the first rail and the second rail are fixedly connected to the end cover through the first through hole and the second through hole, respectively, and the returning member is located at the first end Between the rail and the second rail.
  • the end cover includes an end plate on a side of the fixing member away from the bottom plate and a receiving portion extending toward a side of the bottom plate
  • the fixing member includes a top plate adjacent to the end plate, the reply One end of the piece abuts the top plate and the other end abuts the bottom of the receiving portion.
  • the guide rail and the fixing member are perpendicular to the bottom plate in a direction of relative movement, the first rail and the first through hole are coarsely positioned, and the second rail and the second through hole are
  • the fixing member and The static friction coefficient between the guide rails is fs
  • the length of the fixing member and the second rail is H
  • the bottom plate is away from the connection direction of the first rail and the second rail.
  • the distance between the end of the second rail and the second rail is L, where H > 2 Lfs.
  • the two ends of the guide rail and the through hole are respectively provided with a first sealing member and a second sealing member to isolate the through hole from the outside.
  • the saw blade is located on a first side of the fuselage, and the connecting component is located on a second side of the fuselage opposite the first side.
  • This arrangement avoids the shielding of the saw blade by the guiding mechanism, facilitates the user to observe the exact cutting position of the saw blade during operation, improves the visibility, and sets the saw blade and the connecting component on both sides of the fuselage so that the center of gravity of the tool lies on the fuselage.
  • the center plane is either closer to the center plane, making the user more comfortable to hold during operation.
  • the cutting assembly further includes a lower shroud and an upper shroud, the lower shroud being coupled to the bottom plate and movable along with the bottom plate relative to the body, the lower shroud being disposed on the bottom cover
  • the saw blade is adjacent to a side of the bottom plate so as to cover the saw blade;
  • the connecting assembly can push the lower shroud together with the bottom plate in a direction away from the bottom plate relative to the fuselage Moving linearly to expose a portion of the saw blade;
  • the upper shroud is fixed relative to the fuselage and is disposed on a side of the saw blade away from the bottom plate to thereby integrate the entire body with the lower shroud
  • the saw blade covers; the connecting assembly can move the lower shroud into or out of the upper shroud relative to the fuselage when moving relative to the fuselage.
  • the fuselage includes a front end on which the cutting assembly is mounted and a rear end remote from the front end, the motor is located at a rear end of the fuselage, and an axis of a rotating shaft of the motor is perpendicular to the saw blade The axis of the axis of rotation.
  • the direction in which the power tool is normally used for cutting is forward, and the center of the saw blade moves forward relative to the bottom plate as the body moves toward the bottom plate.
  • a power tool characterized in that the power tool comprises a fuselage, a cutting assembly and a connecting assembly; the cutting assembly comprises a saw blade for cutting a workpiece and a bottom plate for abutting against a surface of the workpiece when the workpiece is cut, the motor is provided with a motor for driving the saw blade to rotate, and the fuselage is vertically movable relative to the bottom plate by the connecting assembly Connected to the backplane.
  • a power tool characterized in that the power tool comprises a fuselage, a cutting assembly and a connecting assembly; the cutting assembly comprises a saw blade for cutting a workpiece and a bottom plate for abutting against the surface of the workpiece when the workpiece is cut, the motor is provided with a motor for driving the saw blade to rotate, and the fuselage is linearly tilted relative to the bottom plate by the connecting assembly Groundly connected to the bottom plate.
  • FIG. 1 is a schematic structural view of an embodiment of a power tool according to the present invention.
  • Figure 2 is a perspective view of the power tool of Figure 1 in an initial state
  • Figure 3 is a perspective view showing the cutting state of the power tool shown in Figure 1;
  • FIG. 4 is a cross-sectional view of the connecting assembly of the power tool of FIG. 1 corresponding to FIG. 2 and FIG. 3 in two different states;
  • Figure 5 is a cross-sectional view of the power tool shown in Figure 2 taken along line A-A;
  • Figure 6 is a cross-sectional view of the power tool connecting assembly of Figure 1;
  • Figure 7 is a force analysis diagram of an embodiment of the power tool of the present invention.
  • Figure 8 is a force analysis diagram of another embodiment of the power tool of the present invention.
  • Figure 9 is a cross-sectional view of the power tool of Figure 1;
  • Figure 10 is a cross-sectional view of another angle of the power tool of Figure 1;
  • Figure 11 is a plan view of the power tool of Figure 1;
  • Figure 12 is a side view of the power tool of Figure 1;
  • Figure 13 is a front elevational view of the power tool of Figure 1;
  • Figure 14 is a plan view of the power tool of Figure 1 hidden behind the end cover;
  • Figure 15 is a front elevational view of a power tool according to another embodiment of the present invention.
  • Figure 16 is a schematic view showing the movement of the saw blade of the power tool shown in Figure 1;
  • Figure 17 is a schematic view showing the movement of the saw blade of the power tool shown in Figure 15;
  • connection assembly 400 motor 202 saw blade
  • a power tool 10 includes a fuselage 100, a cutting assembly 200, and a coupling assembly 300.
  • the cutting assembly includes a saw blade 202 for cutting a workpiece, and is used for cutting the workpiece.
  • a bottom plate 204 that depends on the surface of the workpiece.
  • a working motor 400 for driving the power tool 10 is provided in the body 100.
  • the motor 300 is used to drive the saw blade 202 to rotate to cut the workpiece.
  • the saw blade 202 is preferably a circular saw blade, and the saw blade 202 may be a abrasive pad with abrasive grains, a saw blade welded with a carbide tip, or a saw blade without a carbide tip.
  • the motor 400 is housed in the body 100.
  • the bottom plate 204 has an abutment surface 212 against the workpiece, and the bottom plate 204 is provided with a hole 210 through which the saw blade 202 passes during cutting. It is defined that the direction X in which the user normally uses the power tool for cutting is forward, and the opposite direction is rear X'. It is defined that the direction Y of the depression when the user normally uses the power tool for cutting is downward, and the opposite direction is the upper Y'.
  • FIG. 4 wherein the solid line position of FIG. 4 indicates a cross-sectional view of the connecting component when the power tool 10 is in an initial state, that is, when it is not in operation; the dotted line position indicates that the power tool 10 is in a cutting state, that is, when working.
  • a cross-sectional view of the component As shown in FIG. 2-4, when the user needs to use the power tool 10, the bottom plate 204 is generally pressed against the workpiece to be cut, and the body is pressed down in the Y direction, so that the bottom plate 204 moves relative to the body and the saw blade 210 passes from the hole.
  • the saw blade 210 Passing through 210, the saw blade 210 is rotated by the motor 400 to effect cutting of the workpiece to be cut, and the user can push the power tool 10 in the X direction to cut the power tool forward.
  • the bottom plate 204 and the body 100 move in opposite directions to return to the initial state.
  • the body 100 is linearly movably coupled to the base plate 204 by a connection assembly 300 relative to the bottom plate 204.
  • the body 100 is vertically movably coupled to the bottom plate 204 by the connection assembly 300 relative to the bottom plate 204, that is, the body 100 is linearly movably connected to the body 200 in a direction perpendicular to the bottom plate 204 by the connection assembly 300.
  • Base plate 204 It is also possible that the bottom plate 204 is coupled to the body 100 by the connection assembly 300 in a linearly movable manner relative to the saw blade 202 in a direction substantially perpendicular to the bottom plate 204.
  • connection group The piece 300 includes a fixture 332 and a connector 310.
  • the fixing member and the connecting member are relatively movable.
  • the connector 310 includes at least one rail 330 and an end cap 314 that are fixedly coupled to the bottom plate 204, and the rail 330 and the fixture 332 are relatively movable.
  • the guide rail 330 includes two guide rails, which are a first guide rail 330a and a second guide rail 330b, respectively.
  • the guide rail is a cylindrical member.
  • the fixing member 332a, 332b is fixedly coupled to the body 100.
  • the fixing member may be a combination of a plurality of parts or a part integrally formed.
  • the portion of the hole-shaped structure that cooperates with the first rail 330a is A fixing member 332a and a portion that cooperates with the hole-like structure of the second rail 330b are the second fixing members 332b.
  • the fixing member includes a hole-like structure and is disposed on the bottom plate, and the guide rail is also a column member provided on the body.
  • the first rail 330a and the first fixture 332a are coaxially coupled to each other along the longitudinally extending axis 328a of the first rail, and are relatively movable relative to each other along the axis 328a.
  • the second rail 330b and the second fixture 332b are coaxially engaged with each other along the longitudinally extending axis 328b of the second rail, and are relatively movable relative to each other along the axis 328b.
  • the first rail longitudinally extending axis 328a and the second rail longitudinally extending axis 328b are parallel to each other.
  • the direction in which both the fuselage 100 and the bottom plate 204 move relative to each other is also parallel to the longitudinally extending axes of the two guide rails.
  • the connection assembly 300 further includes an end cap 314 that is fixedly coupled to the first and second rails 330a, 330b. After the first rail 330a passes through the first fixing member 332a, it is fixedly connected to the end cover 314. After the second rail 330b passes through the second fixing member 332b, it is fixedly connected to the end cover 314.
  • the end cap 314 includes an end plate 316 on the side of the fixture 332 remote from the bottom plate 204. Specifically, the first and second rails 330a, 330b are fixedly coupled to the end plates 316 of the end caps.
  • the rails and the end plates 316 are fixedly coupled by screws 320.
  • the first embodiment of the first guide rail and the first and second fixing members are used for mutual guiding, it is also possible to use only one guide rail and one fixing member to guide each other. Of course, the use of two rails can greatly increase the stability of its movement.
  • the end cap 314 prevents the fixing member and the guide rail from being separated from each other.
  • the guide rails 330a, 330b are preferably guide posts, more preferably cylindrical guide rails. With this arrangement, it is more directional and easy to process and assemble.
  • the cutting assembly 200 further includes a lower shroud 208 and an upper shroud 206, the lower shroud 208 being coupled to the bottom plate 204, and the lower shroud 208 being slidable relative to the bottom plate 204 100 can be moved.
  • the lower shroud 208 is disposed on a side of the saw blade 202 adjacent to the bottom plate 204 so that the saw blade 202 can be covered.
  • the lower shroud 208 and the saw blade 202 are located together on a first side of the fuselage 100.
  • the connection assembly 300 can, with the bottom plate 204, push the lower shroud 208 linearly moving away from the bottom plate 204 relative to the body 100 to expose a portion of the saw blade 202.
  • the lower shroud 208 is configured to better protect the saw blade 202 and prevent the saw blade 202 from exposing the bottom plate 204 to the human body.
  • the upper shroud 206 is fixed relative to the body 100, and the upper shroud 206 is placed over the side of the saw blade 202 away from the bottom plate 204 to cover the entire saw blade 202 together with the lower shroud 208.
  • the saw blade 202, the lower shroud 208, and the upper shroud 206 of the cutting assembly 200 are all located on a first side of the body 100.
  • the connecting assembly 300 can move the lower shroud 208 into or out of the upper shroud 206 relative to the body 100 when moving relative to the body 100.
  • the upper shroud 206 further protects the saw blade 202 from damage to other objects by the saw blade 202 that is covered by the upper shroud 206, as well as preventing damage to the human body by the saw blade 202.
  • connection assembly 300 further includes a return member 380.
  • the returning member 350 can provide a resilient force when the power tool 10 returns from the cutting state to the initial state, so that the bottom plate 204 and the body 100 are away from each other, that is, the bottom plate 204 is moved to a position close to the fixing member 332, and the bottom plate 204 can be restored to a fixed distance.
  • the returning member 380 is disposed between the fixing member 332 and the connecting member 310, one end of which abuts the fixing member 332 and the other end abuts the connecting member 310. Specifically, it is located between the end cover 314 and the fixing member 332.
  • the return member 380 is a compression spring.
  • the fixture has a top plate 362 adjacent the end plate 316.
  • the end cap 314 includes a receiving portion 318 that extends toward one side of the bottom plate 204.
  • the return member 380 abuts against the top plate 362 at one end and abuts against the bottom of the receiving portion 318 at the other end.
  • the top plate 362 of the fixing member is movable up and down in the space formed by the receiving portion 318 and the end plate 316. Under the action of the return member 380, the top plate 362 and the end plate 316 abut each other, that is, when the power tool 10 is in the initial state shown in FIG.
  • the end cover 314 and the fixing members 332a, 332b abut each other.
  • the power tool 10 is in the cutting state shown in FIG. 3, and the user presses down the body, and during the relative movement of the bottom plate 204 and the body 100, the fixing member 332 fixedly connected to the body is opposite to the bottom plate 204.
  • the restoring force of the return member 380 pushes the opposite movement of the bottom plate 204 and the body 100 to return to the initial position, achieving automatic reset.
  • the connection assembly 300 further includes at least one linear bearing 418 disposed between the guide rail and the fixing member, that is, between at least one of the two guide rails.
  • a linear bearing is provided, that is, a linear bearing is disposed between the first rail 330a, the first fixing member 332a, and/or the second rail 330b and the second fixing member 332b.
  • the linear bearing 418 is disposed between the first rail 330a and the first fixture 332a.
  • the linear bearing 418 is disposed between the guide rail and the fixing member near the front end.
  • the fixing member 332 is provided with a first through hole and a second through hole, and the fixing member includes the first A portion of one of the through holes is the first fixing member 332a, and a portion including the second through hole is the second fixing member.
  • One end of the first rail 330a and the second rail 330b are fixedly connected to the bottom plate 204, and the other ends of the first rail 330a and the second rail 330b are respectively fixed through the first through hole and the second through hole, and the connecting end cover 314 is fixed.
  • the 380 is located between the first rail and the second rail.
  • the distance between the first guide rail 330a and the rotational axis of the saw blade 202 is substantially equal to the distance between the second guide rail 330b and the rotational axis of the saw blade 202.
  • the first sealing member 322 and the second sealing member 324 are respectively disposed at two ends of the rail and the through hole to isolate the through hole from the outside.
  • the first guide rail cooperates with the first through hole and the second guide rail and the second through hole cooperate, one of which is a coarse positioning and the other is a fine positioning.
  • the mutually cooperating guide rails and through holes are sliding friction.
  • the mutually cooperating guide rails and through holes are rolling friction, and the coarse positioning is larger than the fine positioning gap.
  • the sleeve 336a is coarsely positioned between the second rail 330a and the second fixing member 332a, and the first rail 330a and the first fixing member 332a are precisely positioned by the linear bearing 334b, and are passed through the linear bearing.
  • the static friction coefficient between the positioned second fixing member 332b and the second rail 330b is fs
  • the length of the second fixing member 332b and the second rail 330b is H
  • the bottom plate 204 is in the connecting direction of the first rail and the second rail.
  • the distance between the end portion away from the second rail 330b and the second rail 330b is L
  • the relationship between fs, H, and L satisfies the following relationship: H>2Lfs.
  • the first rail 330a and the first fixture 332a are precisely positioned by the linear bearing 334a
  • the second rail 330b and the second fixture 332b are coarsely positioned by the sleeve 336b.
  • the static friction coefficient between the first fixing member 332a and the first rail 330a precisely positioned by the linear bearing 418 is fs
  • the length of the first fixing member 332a and the first rail 330a is H
  • the bottom plate 204 is at the first rail and the second
  • the distance between the end portion of the guide rail in the connecting direction away from the first rail 330a and the second rail 330a is L
  • the above relationship f>, H, L satisfies the following relationship H>2Lfs.
  • the first rail 330a on the left side and the first fixture 332a are roughly positioned by the sleeve 336a.
  • the matching gap between the first positioning rail 330a and the first fixing member 332a is relatively large, that is, the matching gap between the first rail and the first through hole is large.
  • the second rail 330b located on the right side and the second fixing member 332b are positioned by the linear bearing precision 418b, and the matching gap between the finely positioned second rail 330b and the second fixing member 332b is small, that is, the second rail and the second rail
  • the matching clearance between the two through holes is small, and when the bottom plate 204 is stressed, the finely positioned second guide rail 330b is biased.
  • the force F of the workpiece on the bottom plate 204 is affected by
  • the force point is at the end of the bottom plate 204 near the coarsely positioned first rail 330a
  • L is the distance between the force receiving point of the bottom plate 204 and the finely positioned second rail 330b, that is, the bottom plate 204 is away from the finely positioned second along the saw blade direction X.
  • the second rail 330b and the second fixture 332b on the right side are roughly positioned by the sleeve 336b.
  • the matching gap between the coarsely positioned second rail 330b and the second fixing member 332b is large, that is, the matching gap between the second rail and the second through hole is large.
  • the coarse positioning second guide rail 330b is unstressed when deflected.
  • the first rail 330a located on the left side and the first fixing member 332a are precisely positioned by the linear bearing 334a, and the matching gap between the finely positioned first rail 330a and the first fixing member 332a is small, that is, the first rail and the first rail The fit clearance between the through holes is small.
  • the finely positioned first rail 330a is biased when deflected.
  • the force of the workpiece F against the bottom plate 204 is at the end of the bottom plate 204 near the coarsely positioned second rail 330b, and L is between the force receiving point of the bottom plate 204 and the finely positioned first rail 330a.
  • the distance, that is, the direction X on the bottom plate 204 is away from the distance between the end of the finely positioned first rail 330a to the finely positioned first rail 330a.
  • first rail and the second rail are respectively engaged with the fixing member through the first through hole and the second through hole, and when the thrust point of the bottom plate 204 near the coarsely positioned guide rail is provided to the thrust of the saw blade 202,
  • the guide rail moves smoothly, and fs, H, and L need to satisfy the above relationship.
  • the bottom plate 204 When the cutting is performed, the bottom plate 204 is inclined by force, the force receiving point of the bottom plate 204 is pressed against the workpiece to be cut, the bottom plate 204 is subjected to the upward thrust F of the vertical bottom plate 204, and the two ends of the finely positioned guide rail and the through hole of the fixing member are matched. They are subject to full binding.
  • the points of the finely positioned guide rails are point A and point B, respectively, and the full binding force is FRA and FRB, respectively.
  • the full binding force is the combined force of the reaction force and the static friction force of the finely positioned guide rail by the through hole of the fixing member.
  • the guide rail can be balanced only when the thrust and the two restraining forces meet at one point. Therefore, when L ⁇ L1, that is, H>2Lfs, the thrust F and the two restraining forces are not It is possible to meet, the three forces can not reach the balance, the finely positioned guide rail can not be stuck, and the movement of the finely positioned guide rail can be realized with a small thrust F. In other words, satisfy Under the above conditions, the guide rail and the fixing member will not be stuck, and the user can operate the power tool more smoothly and comfortably.
  • the motor 400 is located at the rear end within the fuselage 100, and the rotational axis of the motor 400 is perpendicular to the rotational axis of the saw blade 202.
  • the motor 400 is coupled to the rotating shaft of the saw blade 202 via a transmission mechanism.
  • the transmission mechanism 500 includes a first bevel gear 520, a second bevel gear 540, a gear shaft 560, and a gear 580.
  • the shaft of the first bevel gear 520 and the motor 400 The rotating shaft is connected by a coupling (not shown), the teeth of the first bevel gear 520 cooperate with the teeth of the second bevel gear 540 to transmit power to a vertical direction, and the gear shaft 560 is fixedly coupled to the second cone
  • the output shaft of the gear 540 meshes with the gear 580 to transmit power to the rotational axis of the saw blade 202.
  • the power of the motor 400 is transmitted from the rear end of the body 100 to the front end, and the rotational axis of the motor 400 is perpendicular to the rotational axis of the saw blade 202.
  • the saw blade 202 is located on a first side of the fuselage 100 and the connection assembly 300 is located on a second side of the fuselage 100 opposite the first side.
  • the power tool 10 has a center plane.
  • the body 100 has an elongated axis 106 that passes through the body axis 106 and the plane of the vertical floor 204 is the center plane.
  • the connection assembly 300 and the saw blade 202 are respectively located on both sides of the center plane.
  • connection assembly 300 does not affect the operator's observation of the cutting of the object by the cutting assembly 200 during cutting by the cutting assembly 200, ie, The operator's line of sight is not obscured, and the cutting visibility is better.
  • the saw blade and the connecting assembly are arranged on both sides of the center plane so that the center of gravity of the tool is located at the center plane or closer to the center plane, thereby making the user more comfortable to hold during operation. .
  • the body 100 includes a front end that mounts the cutting assembly 200 and a rear end that is remote from the front end.
  • the body 100 includes a left side and a right side, preferably cut from the rear end of the body 100.
  • the assembly 200 is on the left side and the connection assembly 300 is on the right side. Since most of the operators are right handed, the cutting assembly 200 is on the left side, and the saw blade 210 contained within the cutting assembly 200 during operation is located just in the operator's line of sight to further enhance the visibility of the power tool 1000.
  • the planes formed by the longitudinally extending axes 328a, 328b of the two rails 330a, 330b are parallel to the plane in which the saw blade 202 is located. This arrangement makes the structure more compact, reducing the size of the power tool and making it more accessible.
  • the dimension of the connecting component 300 in the direction X is smaller than the dimension of the saw blade 202 in the direction. Further, the front end of the connecting component 300 does not exceed the front end of the saw blade 202, and the connecting component The rear end of the 300 does not exceed the rear end of the saw blade 202. In this way, the connecting component does not obstruct the saw blade, and the user can observe the cutting position of the saw blade before and after the cutting process, thereby improving the visibility.
  • the power tool 10 further includes a dust outlet 108, and the dust outlet 108 is preferably disposed at the front end of the shield portion 104. At least one of the rails is located between the dust outlet 108 and the axis of the saw blade 202. In the present embodiment, the second rail 330b is located between the dust outlet 108 and the center of the saw blade.
  • the power tool 10 further includes a spindle (not shown) for mounting the saw blade 202 and driving the saw blade 202 to rotate, and a spindle lock 110 for locking the spindle from rotating.
  • the spindle lock 110 can be locked to prevent the spindle from rotating, thereby avoiding a safety hazard caused by the user accidentally starting the tool.
  • the spindle lock 110 is located between the two rail mechanisms 326a, 326b. With further reference to Figure 14, the distance of the spindle lock 110 from the center plane is less than the distance of the second straight guides 408a, 408b from the center plane.
  • the outermost end of the spindle lock 110 does not exceed the outermost end of the connecting component.
  • the spindle lock is not easily mishandled by the user due to the blocking of the guiding mechanism.
  • the embodiment is substantially the same as the foregoing embodiment, except that the body 100 is linearly slantably connected to the bottom plate 204 via the connecting assembly 300 relative to the bottom plate 204.
  • the direction of relative movement between the rail and the fixing member is inclined to the bottom plate 204.
  • the longitudinally extending axes 328a, 328b of the guide rails are each inclined with respect to the bottom plate 204 and are parallel to each other.
  • the longitudinally extending axes 328a, 328b of the guide rail are inclined rearwardly with respect to the direction X, that is, the axis of the longitudinal extension of the guide rail is lower in the aforementioned direction X as it is lower in the aforementioned direction Y; That is, one end of the guide rail 312 fixedly connected to the bottom plate 204 is a first end, and the other end opposite to the first end is a second end, and the first end is located at a front side of the second end; that is, when the body 100 As the base plate 204 moves, the center of the saw blade 202 moves forward relative to the bottom plate 204.
  • the angle ⁇ between the longitudinally extending axes 328a, 328b of the guide rail and the bottom plate 204 is 80° to 87°. More preferably, the angle ⁇ between the longitudinally extending axes 328a, 328b of the guide rail and the bottom plate 204 is 82°. This setting can effectively prevent the rebound in the work process and improve the comfort and safety of the user operation.
  • Figure 16 is a schematic illustration of the movement of the saw blade in the embodiment of Figure 1, in which the longitudinally extending axis of the guide rail is perpendicular to the plane of the floor.
  • Figure 17 is a schematic illustration of the movement of the saw blade in the embodiment of Figure 15 in which the longitudinally extending axis of the guide rail is inclined relative to the plane of the base plate. Referring to Figures 16 and 17, the rotational direction R of the saw blade 202 causes the saw blade 202 to move upward in the forward portion of the cutting advancement direction X, and the rearward portion in the cutting advance direction X to move downward.
  • the saw blade when the user presses the tool saw blade into the workpiece and the saw blade sinks by the same distance h, in the embodiment in which the longitudinally extending axis of the guide rail is perpendicular to the bottom plate, the saw blade has no advancement amount, and Implementation of the inclination of the longitudinally extending axis of the guide rail relative to the bottom plate In the example, the saw blade has an advancement amount w. Moreover, since the former has no advancement amount, the sawing amount s1 and the front cutting amount s2 are equal, and the latter sawing amount s2 is significantly reduced, and the front cutting amount s1 is significantly increased.
  • the longitudinally extending axis of the guide rail is inclined relative to the bottom plate to reduce the amount of cutting after the saw blade and reduce the sinking speed of the saw blade, thereby effectively Improve the rebound phenomenon.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)

Abstract

L'invention concerne un outil électrique, comprenant un corps de machine (100), un ensemble de coupe (200) et un ensemble de liaison (300), l'ensemble de coupe (200) comprenant une lame de scie (202) pour couper une pièce, et une plaque de fond (204) pour s'appuyer contre la surface de la pièce pendant la coupe de la pièce ; un moteur électrique (400) est situé à l'intérieur du corps de machine (100) ; le moteur électrique (400) est utilisé pour entraîner la lame de scie (202) en rotation ; le corps de machine (100) peut être relié de façon linéaire et mobile à la plaque de fond (204) par rapport à la plaque de fond (204) par l'ensemble de liaison (300) ; et, lorsque l'outil électrique doit être utilisé pour couper, la plaque de fond (204) se déplace de façon linéaire par rapport au corps de machine (100) et, étant donné que le mouvement de la plaque de fond (204) est un mouvement linéaire perpendiculaire à la plaque de fond (204), un opérateur maintient l'outil électrique dans sa main et a seulement besoin d'appuyer sur ce dernier pour mettre en œuvre une coupe vers le bas de la pièce à couper par la lame de scie, ce qui lui permet d'être confortable à manier.
PCT/CN2016/073879 2015-02-16 2016-02-16 Outil électrique Ceased WO2016131412A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201520113205 2015-02-16
CN201520113205.0 2015-02-16

Publications (1)

Publication Number Publication Date
WO2016131412A1 true WO2016131412A1 (fr) 2016-08-25

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ID=56688706

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/073879 Ceased WO2016131412A1 (fr) 2015-02-16 2016-02-16 Outil électrique

Country Status (1)

Country Link
WO (1) WO2016131412A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107081473A (zh) * 2016-02-16 2017-08-22 苏州宝时得电动工具有限公司 动力工具
CN109202172A (zh) * 2017-06-30 2019-01-15 苏州宝时得电动工具有限公司 便携式电圆锯

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH390028A (de) * 1961-10-09 1965-03-31 Sommereder Leopold Trennscheibengerät
FR2841490A1 (fr) * 2002-06-27 2004-01-02 Dubuis Et Cie M Tronconneuse pour barre ou cable metallique, notamment pour fil de contact de catenaire
US20070113718A1 (en) * 2005-11-22 2007-05-24 Credo Technology Corporation Power miter saw with hinge linkage linear guides
CN101244468A (zh) * 2007-02-13 2008-08-20 罗伯特·博世有限公司 具有铰接连接装置线性引导装置的电动斜切锯
CN201841313U (zh) * 2010-01-29 2011-05-25 南京德朔实业有限公司 一种电圆锯
CN102407383A (zh) * 2010-09-20 2012-04-11 力山工业股份有限公司 锯片垂直升降的切割机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH390028A (de) * 1961-10-09 1965-03-31 Sommereder Leopold Trennscheibengerät
FR2841490A1 (fr) * 2002-06-27 2004-01-02 Dubuis Et Cie M Tronconneuse pour barre ou cable metallique, notamment pour fil de contact de catenaire
US20070113718A1 (en) * 2005-11-22 2007-05-24 Credo Technology Corporation Power miter saw with hinge linkage linear guides
CN101244468A (zh) * 2007-02-13 2008-08-20 罗伯特·博世有限公司 具有铰接连接装置线性引导装置的电动斜切锯
CN201841313U (zh) * 2010-01-29 2011-05-25 南京德朔实业有限公司 一种电圆锯
CN102407383A (zh) * 2010-09-20 2012-04-11 力山工业股份有限公司 锯片垂直升降的切割机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107081473A (zh) * 2016-02-16 2017-08-22 苏州宝时得电动工具有限公司 动力工具
CN109202172A (zh) * 2017-06-30 2019-01-15 苏州宝时得电动工具有限公司 便携式电圆锯

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