WO2007052463A1

WO2007052463A1 - Cutting machine

Info

Publication number: WO2007052463A1
Application number: PCT/JP2006/320533
Authority: WO
Inventors: Atsuhito Okada; Katsutoshi Kouchiyama; Kazuo Aoki
Original assignee: Ryobi Ltd.
Priority date: 2005-11-04
Filing date: 2006-10-16
Publication date: 2007-05-10
Also published as: JP4860236B2; JP2007125796A

Abstract

A cutting machine in which a handle (5) is installed on a motor case (1) for storing a motor for rotating a saw blade, and a surface plate (7) is connected to the lower side of the motor case through a cutting angle adjusting part (6). Protective bodies (12, 13, 14, 16) formed of a soft material are fitted to at least three of four parts, i.e., the handle, the motor case, the cutting angle adjusting part and the surface plate. When the cutting machine is placed upside down on a desired placement surface, only the protective bodies at these three parts are brought into contact with the placement surface. Even if operation is suspended and the cutting machine is placed upside down on a material to be worked, the material is not damaged since the protective bodies are brought into contact with the placement surface. Furthermore, since the cutting machine is supported by these three protective bodies at three points, the machine does not overturn on the placement surface due to lowering of the gravity center of the cutting machine. By these working effects, the attitude of the cutting machine can be stabilized when the cutting machine is so placed upside down on the placement surface that the material to be cut such as a decorative sheet is not damaged.

Description

Specification

Cutting machine

Technical field

[0001] The present invention relates to a cutting machine such as a portable circular saw.

Background art

[0002] A protective body made of a soft material may be attached to a motor case, a handle or the like of an electric tool in order to protect the electric tool itself or a workpiece to be processed.

(For example, see Patent Documents 1, 2, and 3 below.) ₀

[0003] Patent Document 1: Utility Model Registration No. 3046062 Specification

Patent Document 2: JP 2004-122279 A

Patent Document 3: Japanese Patent Laid-Open No. 11 221781

Disclosure of the invention

Problems to be solved by the invention

[0004] The cutting machine has a structure in which a handle is provided on a motor case that houses a motor that rotates a saw blade, and a surface plate is connected to the lower side of the motor case via a cutting angle adjustment unit. Therefore, when the work is not performed, the work material is placed on the work material or the like in a reversed state with the surface plate facing up so as not to damage the smooth surface of the surface plate. However, if the operator suspends the work and releases the cutting machine, it is usually placed on the work piece to be processed, which may damage the work piece. In particular, the loss increases when the workpiece is a decorative board.

[0005] In order to solve such a problem, the conventional cutting machine has a motor case and a handle attached with arms projecting outward from the motor case and a needle, and is also protected with soft material at multiple locations on the arm. Although the body is attached, in that case the cutting machine becomes larger, the arm gets in the way of work, and the center of gravity becomes higher when the cutting machine is placed, so it becomes unstable and easy to fall over (For example, see Patent Document 1 above.) O

[0006] Also, some electric polishers are provided with protective bodies attached to the motor case and the handle, respectively, and are supported at three points of the protective body and the tip of the auxiliary handle. Since Migakugu is to avoid exposure to the workpiece or the like, there is a problem that must be added the auxiliary handle in addition to the protective member (e.g., the Patent Document 2.) ₀

[0007] Further, some electric drivers have protective bodies attached to the rear surface portion, side surface portion, and handle of the body portion. because of which the support in two positions, backlash easily ease to damage the workpiece or the like, and, there is cormorants problem (e.g., the Patent Document 3.) ₀

[0008] An object of the present invention is to provide a cutting machine capable of solving the above problems.

Means for solving the problem

In order to solve the above problems, the present invention employs the following configuration.

That is, in the cutting machine according to the present invention, the handle is provided on the motor case that houses the motor that rotates the saw blade, and the surface plate is connected to the lower side of the motor case via the cutting angle adjustment unit. A protective body made of a soft material is attached to at least three of the four positions of the handle, the motor case, the cutting angle adjusting unit, and the surface plate, and the cutting machine is turned upside down to have a desired placement. When placed on a surface, only the three protectors are in contact with the placement surface.

[0011] Further, in the cutting machine according to the present invention, the protective body attached to the handle can be configured integrally with the handle by double molding.

[0012] In addition, the cutting machine according to the present invention can be configured such that the protective body attached to the motor case is integrated with the motor case by double molding and covers the entire rear periphery of the motor case.

[0013] Further, in the cutting machine according to the present invention, the protector attached to the surface plate protrudes upward from the surface plate as a protrusion, and the head is fixed to the surface plate with a fixing screw that is submerged in the protrusion. It can be done.

Furthermore, when the cutting machine according to the present invention is placed on a desired mounting surface by turning it upside down, the three contact points of the protector that contacts the mounting surface are connected by a straight line. It is preferable that the members other than the three protective bodies are not protruded outward from the plane including the triangle formed by the above. In another cutting machine according to the present invention, a motor for rotating a saw blade is provided perpendicular to the side surface of the saw blade, a handle is provided on a motor case housing the motor, and the motor case is A cutting machine with a surface plate connected to the lower side, and a protector made of a soft material having a surface substantially parallel to the side surface of the saw blade on the end surface opposite to the saw blade sandwiching the handle of the motor case. Is provided.

The invention's effect

The present invention is a cutting machine in which a handle is provided on a motor case that houses a motor that rotates a saw blade, and a surface plate is connected to the lower side of the motor case via a cutting angle adjustment unit. A protective body made of a soft material was attached to at least three of the handle, motor case, cutting angle adjustment section, and surface plate, and the cutting machine was turned over and placed on the desired mounting surface. At this time, since only the above three protectors are in contact with the mounting surface, when the cutting operation is interrupted, the cutting machine is turned over on the decorative board, which is the workpiece. However, since the protector made of soft material comes into contact with the mounting surface at three locations, the work plate as well as the surface plate of the cutting machine will not be damaged. In addition, since it is supported at three points by the three protectors, the center of gravity of the cutting machine is lowered and can be stably placed on the mounting surface so as not to fall down.

[0017] Further, according to the present invention, since the protective body force attached to the handle is integrated with the handle by double molding, there is no need for a screw or the like for attaching the protective body to the handle. As a result, the number of assembly steps is reduced, and the manufacturing cost can be reduced.

[0018] Further, according to the present invention, the protective body force attached to the motor case is integrally formed with the motor case by double molding and covers the entire rear part of the motor case, so the protective body is attached to the motor case. This eliminates the need for screws and the like, reduces the number of parts and the number of assembly steps, and enables low cost. In addition, since the protective body covers the entire circumference of the rear part of the motor case, the operator can work by gripping the rear part of the motor case without sliding.

In the present invention, the motor for rotating the saw blade is provided perpendicular to the side surface of the saw blade, the handle is provided on the motor case housing the motor, and the surface plate is provided on the lower side of the motor case. Opposite the saw blade with the handle of the motor case across the cutting machine connected to Since the protective body made of a soft material having a surface substantially parallel to the side surface of the saw blade is provided on the end face on the side, the saw blade of the cutting machine is mounted in a state substantially parallel to the mounting surface of the workpiece. The surface plate and saw blade can be separated from the workpiece. Furthermore, since a protective body made of a soft material provided on the end surface opposite to the saw blade sandwiching the handle of the motor case comes into contact with the work surface, the surface plate of the cutting machine is Of course, the workpiece will not be damaged. Furthermore, even if there is a small unevenness on the mounting surface of the workpiece, the protector that also becomes a soft material absorbs the unevenness, so that the cutting machine can be stably mounted on the mounting surface without falling down.

Brief Description of Drawings

FIG. 1 is a front view of a cutting machine according to a first embodiment.

FIG. 2 is a right side view of the cutting machine according to the first embodiment.

FIG. 3 is a plan view of the cutting machine according to the first embodiment.

[FIG. 4] FIG. 4 is a front view showing a state in which the cutting machine according to Embodiment 1 is placed on the force-bearing material such that the end surface of the protector of the motor case is in contact with the work surface of the work material. is there.

[FIG. 5A] FIG. 5A is a perspective view of the cutting machine according to Embodiment 1 which is turned upside down and left standing.

[FIG. 5B] FIG. 5B is a perspective view of the cutting machine according to the first embodiment, which is turned upside down and left standing.

[FIG. 5C] FIG. 5C is a perspective view of the cutting machine according to Embodiment 1 which is turned upside down and left standing.

FIG. 6 is a partially cutaway front view of the cutting machine according to the second embodiment.

[FIG. 7A] FIG. 7A is a perspective view of a cutting machine according to Embodiment 2 which is turned over and left standing.

[FIG. 7B] FIG. 7B is a perspective view of the cutting machine according to the second embodiment which is turned upside down and left standing. Explanation of symbols

[0021] 1 Motor case, 2 Saw blade, 5 Handle, 6 Cutting angle adjuster, 7 Surface plate, 12, 13, 1 4, 16 Protective body.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 3, this cutting machine has a motor case 1 extending in the left-right direction.

In the motor case 1, a motor (not shown) is disposed sideways. Mode not shown The Tashaft protrudes from the motor case 1 to the left, and the saw blade 2 is fixed to its tip. A fixed cover 3 is provided integrally with the motor case 1 on the left side of the motor case 1, and the fixed cover 3 covers substantially the upper half of the saw blade 2. The lower half of the saw blade 2 is covered by the rotary bar 4. The rotation cover 4 can rotate about the motor shaft, and can enter the fixed cover 3 while rotating to the workpiece W (see FIG. 2).

A handle 5 is fixed on the motor case 1. The handle 5 extends in the form of an arch in the front-rear direction on the motor case 1, and its front and rear ends are connected to the motor case 1.

A platen 7 is connected to the lower side of the motor case 1 via a cutting angle adjusting unit 6. The surface plate 7 is a substantially rectangular plate that extends under the motor case 1 in the front-rear direction. A through hole (not shown) is formed in the inner side of the platen 7 so as to extend in the front-rear direction. Penetrates from top to bottom of surface plate 7. The lower surface of the surface plate 7 is a smooth surface in contact with the workpiece W, and the saw blade 2 cuts the workpiece W while the smooth surface slides on the surface of the workpiece W.

[0026] The cutting angle adjusting unit 6 includes brackets 8 that rise and fall in the front and rear end forces of the surface plate 7, respectively. The brackets 8 are connected to connecting members (not shown) attached to the front and rear ends of the fixed cover 3 via pivot pins 9, respectively. The two pivot pins 9 are arranged on a straight line extending in the front-rear direction of the cutter. Each bracket 8 is provided with a long hole 8a that is curved with the pivot pin 9 as the center, and a thumbscrew 10 passes through each long hole 8a and is screwed to a connection member (not shown). When the thumbscrew 10 is tightened, the surface plate 7 is fixed to the fixed cover 3 side, and when the thumbscrew 10 is loosened, the surface plate 7 can rotate with respect to the fixed cover 3 with the pivot pin 9 as a fulcrum. Thus, by tilting the surface plate 7 with respect to the fixed cover 3, the smooth surface of the surface plate 7 is inclined in the left-right direction with respect to the saw blade 2, and the cutting angle of the workpiece W is adjusted. be able to.

[0027] A ruler (not shown) can be attached to the surface plate 7 along one side extending in the front-rear direction. The ruler is fixed with two arms extending parallel to the left and right direction, and the surface plate 7 is provided with a switching lever 11 for switching between fixing and releasing these arms with one touch.

As shown in FIGS. 1 to 3, protectors 12, 13 and 14 made of a soft material are attached to the handle 5, the motor case 1, and the surface plate 7, respectively. [0029] As the soft material, for example, urethane rubber, soft rosin and cork are used.

[0030] The protector 12 attached to the handle 5 is formed as a relatively thin film, and this protector 12 extends to the highest part of the handle 5 where the operator of the handle 5 grips it with the hand. The protector 12 attached to the handle 5 is a force that can be molded separately from the handle 5 and can be fixed to the handle 5 by screwing, etc. In this embodiment 1, the handle 5 and the protector 12 Are double-molded using different types of resin, and integrated at the same time as molding. As double molding, molding methods such as two-color molding, in-mold molding, insert molding, and overmold molding can be employed. By using double molding to protect the protector 12 with the handle 5, the screws for attaching the protector 12 to the handle 5 become unnecessary, reducing the number of parts and the number of assembly steps. Is possible.

[0031] The protector 13 attached to the motor case 1 is formed as a relatively thin film, and the protector 13 is located on the opposite side of the saw blade 2 across the handle 5 of the substantially cylindrical motor case 1. Covers the circumference. The end surface 13a of the protector 13 is formed on a surface substantially parallel to the side surface of the saw blade 2. More specifically, the end surface 13a is formed in a ring shape along the contour of the end surface shape of the motor case 1.

[0032] Thereby, the operator can work by gripping the rear part of the motor case 1 without slipping, and the cutting machine with the end face 13a of the protector 13 down as shown in FIG. The cutting machine can be placed in a state substantially parallel to the surface on which the workpiece W is placed, and the surface plate 7 and the saw blade 2 can be separated from the workpiece W. Further, since the protection body 13 made of a soft material comes into contact with the mounting surface of the workpiece W, the workpiece W is not damaged as well as the surface plate 7 of the cutting machine. Furthermore, even if there is a small unevenness on the mounting surface of the workpiece W, the protector 13 that also becomes a soft material absorbs the unevenness, so that the cutting machine can be stably mounted on the mounting surface without falling down. .

Of course, the protector 13 may be provided by expanding the rear force of the motor case 1 to the front, or may be provided locally only at the protruding portion. The protector 13 may be molded separately from the motor case 1 and fixed to the motor case 1 by bonding, screwing, or the like. However, in the first embodiment, the motor case 1 and the protector 13 are different from each other. Double-molded with fat and integrated at the same time as molding. As double molding, handle 5 In the same manner as in the above, molding methods such as two-color molding, in-mold molding, insert molding, and overmolding can be employed. By using double molding to protect the protector 13 and the motor case 1 together, there is no need for screws to attach the protector 13 to the motor case 1, reducing the number of parts and the number of assembly steps. Dredge is possible.

As shown in FIG. 3, the protector 14 attached to the surface plate 7 is fixed in the vicinity of the corner on the motor case 1 side, which is the intersection of the front side and the right side on the upper surface of the surface plate 7. The protector 14 protrudes upward from the surface plate 7 as a protrusion, and is fixed to the surface plate 7 by a fixing screw 15 whose head is submerged in the protrusion.

[0035] As shown in FIGS. 5A, 5B, and 5C, when the cutting machine is placed on a desired placement surface in an inverted state with the smooth surface of the surface plate 7 turned upside, Only the protectors 12, 13, and 14 of this will come into contact with the mounting surface. As a result, even if the cutting operation is interrupted and the cutting machine is turned upside down on a decorative board or the like, which is the workpiece W, the protectors 12, 13 and 14 made of a soft material are applied to the mounting surface. Because of the contact, damage to the decorative plate as well as the smooth surface of the surface plate 7 of the cutting machine is prevented. In addition, since it is supported at three points by the three protectors 12, 13, and 14, the center of gravity of the cutting machine is lowered and can be stably placed on the mounting surface so as not to fall down.

Further, as shown in FIGS. 1, 2, 3, 5, 5A, 5B, and 5C, a triangle is formed when the protectors 12, 13, and 14 are connected by a straight line between the three points that contact the mounting surface. The force that forms T The parts such as the thumbscrew 10 and the switching lever 11 do not protrude from the plane including the triangle T. As a result, the cutting angle adjustment unit 6 can be released and the ruler can be released by the projections other than the thumbscrew 10 knob, the switching lever 11 and other protective bodies 12, 2, 13 and 14 coming into contact with the mounting surface. Is prevented.

[0037] Next, the operation of the cutting machine having the above configuration will be described.

[0038] In order to cut the work material W such as the decorative plate with this cutting machine, loosen or tighten the loosening thumbscrew 10 and operate the cutting angle adjusting section 6 to cut it. Adjust the angle and connect the ruler to the surface plate 7 with the switch lever 11 if necessary.

[0039] Then, the operator holds the handle 5 to support the cutting machine, activates the motor to rotate the saw blade 2, and places the surface plate 7 on the work material W as shown in FIG. To move forward. Revolving bar 4 Hit the target material W and wrap around the fixed cover 3. As a result, the work of cutting the supported material W progresses, and during that time, the operator can grip the protector 12 of the handle 5 and the protector 13 of the motor case 1, so that the gripped hand does not slip properly. It is possible to move forward while holding the cutting machine.

[0040] When interrupting the cutting operation, the operator stops the motor and turns the cutting machine upside down on the surface of the workpiece W (see Fig. 2) as shown in Figs. 5A, 5B and 5C. Placed on. In that case, the three soft protectors 12, 13 and 14 come into contact with the surface of the workpiece W, so that the surface of the workpiece W is protected from damage. Further, since the smooth surface of the surface plate 7 faces upward and does not contact the workpiece W, the smooth surface of the surface plate 7 is not damaged. Furthermore, the projections other than the protectors 12, 13 and 14 such as the thumbscrew 10 and the switching lever 11 include the triangle T shown in FIGS. 1, 2, 3, 5 A, 5 B and 5 C. Since they are retracted into the plane, the unintentional loosening of the thumbscrew 10 and the unintentional switching of the switching lever 11 due to the contact with the surface of the member W to be supported are prevented.

[0041] <Embodiment 2>

As shown in FIG. 6, in the cutting machine according to the second embodiment, a protector 16 made of a soft material is also attached to the apex of the bracket 8 of the cutting angle adjusting unit 6. In this case, as in the first embodiment, the protectors 12, 13 and 14 may be attached to the handle 5, the motor case 1 and the surface plate 7, respectively, but the protector 14 of the surface plate 7 is omitted. May be.

[0042] As shown in Fig. 7A and Fig. 7B, when this cutting machine is turned upside down and placed on the desired mounting surface such as the surface of the target construction material W (see Fig. 2), the cutting angle The three places of the protective body 16 attached to the adjusting unit 6, the protective body 12 attached to the handle 5, and the protective body 13 attached to the motor case 1 are in contact with the mounting surface. As a result, even if the cutting operation is interrupted and the cutting machine is placed upside down on a decorative board or the like, the protective bodies 12, 13, 16 made of a soft material come into contact with the mounting surface. 7. Damage to the decorative board, etc. is prevented. In addition, since the three protectors 12, 13, 16 are supported at three points, the cutting machine has a low center of gravity and is stably placed on the mounting surface.

[0043] Further, as shown in FIGS. 7A and 7B, from the plane including the triangle S formed by connecting the three points where the protectors 12, 13, 16 abut against the placement surface with straight lines. , 10 thumbscrews Since the parts such as the tab and the switching lever 11 do not protrude, the cutting angle adjustment unit 6 of the thumbscrew 10 knob, the switching lever 11 and the like other than the protectors 12, 13 and 16 contact the mounting surface. Release, ruler release, etc. are prevented in advance.

The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described various embodiments, and various modifications can be made without departing from the gist of the present invention. For example, in the above-described embodiment, the soft body is provided at predetermined three or four points of the cutting machine, but can be added to other points.

Claims

The scope of the claims

[1] In a cutting machine in which a handle is provided on a motor case that houses a motor for rotating a saw blade, and a surface plate is connected to the lower side of the motor case via a cutting angle adjustment unit, the handle, the motor case A protective body made of a soft material is attached to at least three of the four parts of the cutting angle adjusting part and the surface plate, and the three parts are protected when the cutting machine is turned over and placed on the desired mounting surface. A cutting machine characterized in that only the body is in contact with the mounting surface.

[2] In the cutting machine according to claim 1,

A cutting machine characterized in that the protector attached to the handle is integrated with the handle by double molding.

[3] In the cutting machine according to claim 1,

A cutting machine characterized in that a protective body attached to a motor case is integrated with the motor case by double molding and covers the entire rear part of the motor case.

[4] In the cutting machine according to claim 1,

A cutting machine characterized in that a protective body attached to the surface plate protrudes upward as a protrusion from the surface plate and is fixed to the surface plate by a fixing screw whose head is submerged in the protrusion.

[5] In the cutting machine according to any one of claims 1 to 4,

When the cutting machine is turned upside down and placed on the desired mounting surface, the plane force including the triangle formed by connecting the three contact points of the protector in contact with the mounting surface with a straight line outside, the above A cutting machine characterized in that it is configured so that members other than the three protective bodies do not protrude.

[6] A cutting machine in which a motor for rotating the saw blade is provided perpendicular to the side surface of the saw blade, a handle is provided on the motor case housing the motor, and a surface plate is connected to the lower side of the motor case In

A cutting machine characterized in that a protective body made of a soft material having a surface substantially parallel to a side surface of the saw blade is provided on an end surface opposite to the saw blade sandwiching the handle of the motor case.