JP2007118487A - Table cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a table cutter capable of keep a cutting part in an approached position with a few accessaries, regulating a parting position and preventing a cutting blade from being exposed. <P>SOLUTION: The table cutter comprises a base part 2, the cutting part 4 supporting the cutting blade 42, a supporting part 3 supporting the cutting part 4 so as to be capable of pivoting in the approaching and parting direction to the base part 2, a pin 5 provided at the supporting part 3, a protecting cover 43 provided through a rotating shaft 44 at the cutting part 4, and a link 6 one end of which is pivoted by the supporting part 3 with the pin 5 and the other end of which is pivoted by the protecting cover 43 with a link attaching part 45, wherein a hook stopper part 41D is provided at the vicinity position of the one end of the link 6 of the cutting part 4 so that the pin 5 is capable of selectively moving between a first position where the cutting part 4 keeps a most parted pivoting position by hooking to the hook stopper part 41D and a second position where the cutting part 4 keeps a most approached pivoting position by hooking to the hook stopper part 41D. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tabletop cutting machine, and more particularly to a tabletop cutting machine having a mechanism for protecting a cutting blade.

  2. Description of the Related Art Conventionally, in a tabletop circular saw that is a tabletop cutting machine, a cutting portion having a circular saw blade swings in a vertical direction on a base portion that carries a material to be cut to cut the material to be cut. Therefore, at the time of cutting, the cutting portion is urged upward by a biasing member such as a spring and separated from the base portion so as to secure a space in which the member to be cut is arranged above the base portion and can be swung. . Further, in order to save space and mobility of the tabletop circular saw when not cut, the cut portion can be held in a cut state, that is, the cut portion can be held closest to the base portion when not cut. In order to hold the cutting portion in a close state, as shown in Patent Document 1, a mechanism is disclosed that uses a pin to hold the cutting portion in a close proximity to the base portion. In addition to this pin, a mechanism for holding the cutting portion at the most distant position, such as another pin, is also provided.

In addition, since the circular saw blade has a sharp blade, a configuration in which the portion where the circular saw blade is exposed is protected by a protective cover in a state where the cutting portion is in a separated position when not cut is widely implemented. . In this configuration, since the circular saw blade needs to be exposed at the time of cutting, the protective cover is removed or moved to expose the circular saw blade as the cutting portion swings and moves to a close position. Yes.
Japanese Patent No. 3431403

  However, in the above-mentioned tabletop circular saw, both a mechanism including a pin that defines the separation position of the cutting part and a lock mechanism that locks at a close position of the cutting part are necessary, and these two mechanisms are installed. Space was needed. In addition, since the two mechanisms are provided, the number of components as the entire apparatus has increased.

  Further, when the protective cover is provided, the cutting blade can be covered when the cutting portion is at a position separated from the base portion. However, the cutting blade was exposed when the cutting blade was in a position close to the base portion when not cutting, such as when moving a tabletop circular saw. In recent European standards (EN), the cutting blade must be covered and not exposed when the tabletop circular saw is transferred, but when the structure is exposed as the protective cover swings to the close position, The cutting blade was exposed at the time of transfer and could not meet the above standards. In order to comply with the above standards, another protective cover was attached, or a new mechanism other than the pin related to the lock of the cutting part was adopted to move the protective cover to the position where the cutting blade was covered. Has become complicated and the number of components has increased.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a tabletop cutting machine that can hold a cutting portion at a close position with a small number of parts, defines a separation position, and prevents exposure when the cutting blade is moved.

  In order to solve the above-described problems, the present invention provides a base portion that supports a member to be cut, a cutting portion that rotatably supports a cutting blade, and the base portion, and the cutting portion is disposed above the base portion. A support portion that is swingably supported in a direction of approaching and separating from the base portion, a pin provided on the support portion, a protective cover provided on the cutting portion via a rotation shaft, and one end of the pin A table cutting machine comprising: a link pivotally supported by the support portion and the other end pivotally supported by the protective cover at a position different from the rotational axis, the cutting portion being one end of the link A latching portion is provided in the vicinity of the pin, and the pin latches with the latching portion, and the cutting portion holds the swinging position farthest from the base portion, and the latching portion The cutting portion can be selectively moved between the second position where the cutting portion holds the swing position closest to the base portion. Providing miter saw is.

  In the tabletop cutting machine having the above-described configuration, the support portion includes a cutting portion support portion and a link support portion that can rotate between a first rotation position and a second rotation position, and the link support portion. The one end is provided with the pin, and the other end is rotatably connected to one end of the cutting portion supporting portion. The cutting portion supporting portion is connected to the base portion, and the link supporting portion is connected to the first turn. Preferably, the pin is in the first position when in the moving position and the pin is in the second position when the link support is in the second pivot position.

  The support portion is disposed on the rear end side of the base portion, the protective cover is positioned on the front end side of the base portion, and the cutting is performed as the link moves from the rear end side to the front end side. It is possible to move from a cutting position that exposes the blade to a protective position that covers the cutting blade, and in a state where the cutting portion is closest to the base portion, from the first rotation position of the link support portion. With the movement to the second rotation position, it is preferable that the link moves from the rear end side to the front end side direction and the protective cover moves from the cutting position to the protection position direction.

  Further, in the tabletop cutting machine having the above-described configuration, the support portion holds the pin on one end side so as to be slidable in the axial direction of the pin between the first sliding position and the second sliding position. A hole is formed and connected to the base portion at the other end side, and the latching portion has a first latching portion and a second latching portion in a region different from the first latching portion. When the pin is in the first sliding position, the pin abuts the first latching portion to provide the first position, and when the protrusion is in the second sliding position, The protrusion may contact the second latching portion to provide the second position.

  The support portion is disposed on the rear end side of the base portion, the protective cover is positioned on the front end side of the base portion, and the cutting is performed as the link moves from the rear end side to the front end side. It is possible to move from a cutting position that exposes the blade to a protective position that covers the cutting blade, and in a state where the cutting portion is closest to the base portion, the first sliding position of the pin from the first sliding position. With the movement to the second sliding position, the link may move from the rear end side toward the front end side, and the protective cover may move from the cutting position to the protective position.

  According to the tabletop cutting machine of the first aspect, the pin can define the position most distant from the base portion and the closest position when the cutting portion swings. Therefore, the member that defines the most separated position of the cutting portion and the member that is held in the closest state can be formed from one component, and the number of components as the entire apparatus can be reduced.

  According to the tabletop cutting machine of Claim 2 and Claim 4, a pin can move to a 1st position and a 2nd position by rotation of a link support part and sliding to the axial direction of a pin. . Accordingly, the pins can be arranged at the first position and the second position with a simple configuration, and the cutting portion can be held.

  According to the desk-top cutting machine of Claim 3 and Claim 5, a protective cover moves to a cutting | disconnection position and a protection position by the back-and-forth movement of a link. Therefore, by moving the link forward when the cutting part is at the closest position, the protective cover can be moved to the protective position side to protect the cutting blade.

  Hereinafter, a tabletop cutting machine according to a first embodiment of the present invention will be described with reference to FIGS. A tabletop saw 1 that is a tabletop cutting machine shown in FIG. 1 is mainly composed of a base portion 2, a cutting portion 4, and a support portion 3.

  The base portion 2 includes a base 21 on which a member to be cut is placed, a turntable 22, and a fence 23. In addition, in the base part 2, the position of the to-be-cut member with respect to the base part 2 is defined as the upper side, and the upper opposite direction is defined as the lower side. Moreover, the direction in which the support part 3 is provided in the base part 2 is defined as the rear, and the opposite direction of the rear is defined as the front.

  The turntable 22 is supported on the base 21 via a rotation shaft 24 and is rotatable about the rotation shaft 24. As the turntable 22 rotates, so-called rotational cutting of the member to be cut is possible. The turntable 22 is formed with an arcuate recess 22a in which a cutting blade 42 described later is accommodated when the cutting portion 4 swings in a direction close to the base portion 2. A fixed handle 25 is provided on the front side of the turntable 22 so as to fix the space between the turntable 22 and the base 21 and serve as a grasping part when the turntable 22 is rotated. Further, on the rear side of the turntable 22, there is provided a tilting support portion 22A that is connected to the support portion 3 by a rotation shaft 35A, which will be described later, and supports the support portion 3 in a tiltable manner.

  The support part 3 is mainly composed of a cutting part support part 31 and a link support part 32. One end of the cutting portion support portion 31 is configured as a pair of arms, and a link support portion 32 is rotatably provided by a bolt 33 at the outermost end portion of one arm-like portion. The other end is pivotally supported on the tilting support portion 22A by a rotation shaft 35A. A support shaft portion 46 is provided across the pair of arm portions, and the cutting portion 4 is pivotally supported by the support shaft portion 46 so as to be tiltable. Further, the support shaft portion 46 is provided with a spring 34, and the cutting portion 4 is biased upward by the spring 34 in a direction away from the base portion 2.

  A tilting mechanism 35 is provided on the other end side of the cutting portion supporting portion 31 and in the vicinity of the tilting supporting portion 22A to control the tilting of the supporting portion 3 and the cutting portion 4 with respect to the base portion 2. A gear (not shown) and a handle lever 35B are provided in the tilt mechanism 35, and the support portion 3 and the cutting portion 4 can be held at a predetermined tilt angle by interlocking the handle lever 35B and the gear. By tilting the support part 3 and the cutting part 4, so-called inclined cutting of the member to be cut is possible.

  The link support portion 32 is provided with a pin 5 that rotatably supports a link 6 described later on one end side, and is pivotally supported by a cutting portion support portion 31 by a bolt 33 on the other end side. At this time, the positions of the link support portion 32 and the bolt 33 are configured such that the rotation shaft of the bolt 33 is coaxial with the rotation shaft of the support shaft portion 46. As shown in FIG. 1, in the link support portion 32, the time when the pin 5 position is behind the cutting portion support portion 31 is defined as the first rotation position, and the position of the pin 5 at this time is the first position. It becomes. Also, as shown in FIG. 5, in the link support portion 32, when the pin 5 is in front of the cutting portion support portion 31, it is defined as the second rotation position, and the position of the pin 5 at this time is the second position. Become.

  The cutting part 4 is mainly composed of a frame 41, a cutting blade 42 and a protective cover 43. The frame 41 includes a cutting blade placement portion 41A on which the cutting blade 42 is placed, a handle 41B that is provided on the front side and serves as a grasping position when the cutting portion 4 swings, and a holding portion for transporting the tabletop circular saw 1 And a transport handle 41C. A motor (not shown) for driving the rotating shaft 42A of the cutting blade 42 is built in the frame 41, and a switch (not shown) for controlling the driving of the motor (not shown) is provided on the handle 41B. When the switch (not shown) is turned on, the cutting blade 42 arranged in the cutting blade placement portion 41A by a motor (not shown) is rotated about the rotation shaft 42A.

  The protective cover 43 is attached to the frame 41 so as to be rotatable by a rotation shaft portion 44 so as to cover the cutting blade arrangement portion 41 </ b> A and the cutting blade 42. The rotation shaft portion 44 is disposed above the rotation shaft 42 </ b> A of the cutting blade 42. Therefore, the protective cover 43 is rotatable around the cutting blade 42 and the cutting blade placement portion 41A. As shown in FIG. 1, the protective cover 43 is a position (protective position) where almost all of the portions where the cutting blade 42 is exposed from the cutting blade arrangement portion 41 </ b> A are covered in a state where the cutting portion 4 is farthest from the base portion 2. Is arranged.

  In addition, a link attachment portion 45 is disposed at a position above the rotation shaft portion 44 of the protective cover 43 in a state where the cutting portion 4 is farthest from the base portion 2. A plate-like link 6 is provided between the link attachment portion 45 and the pin 5.

  A long hole 6 a into which the link attachment portion 45 is inserted is formed in the link 6 in the longitudinal direction of the link 6. Therefore, the link 6 can move in the longitudinal direction of the link 6 with respect to the link attachment portion 45 and the protective cover 43.

  As shown in FIGS. 2 and 3, a hooking portion 41 </ b> D that can be hooked with the pin 5 is provided in the frame 41 and in the vicinity of the pin 5 position, which is one end of the link 6. The latching portion 41D is in contact with the pin 5 in a state where the pin 5 is in the first rotation position. Although the cutting part 4 is urged in the direction away from the base part 2, the cutting part 4 cannot move upward from the position shown in FIG. Therefore, the pin 5 defines the position where the cutting part 4 is farthest from the base part 2 and is held at that position.

  FIG. 4 shows a state in which the cutting part 4 is closest to the base part 2. In this state, the protective cover 43 is pulled rearward relative to the cutting blade placement portion 41A by the link 6, and rotates around the cutting blade placement portion 41A and the cutting blade 42 to substantially form the cutting blade placement portion 41A. It is arranged at a position (cutting position) that covers only. Therefore, the cutting blade 42 is exposed, and a part of the exposed cutting blade 42 is inserted into an arcuate recess 22 a formed in the turntable 22. A stopper (not shown) works in a state where the cutting part 4 is swung to the position shown in FIG. 4, and the position closest to the base part 2 of the cutting part 4 is defined.

  In this state, there is a gap between the cutting blade placement portion 41A and the surface of the base portion 2, so that a part of the cutting blade 42, more specifically, between the cutting blade placement portion 41A and the surface of the base portion 2 and The front position portion is exposed to the outside. Therefore, the link 6 is moved forward to cover the exposed portion with the protective cover 43.

  In order to move the link 6 forward, as shown in FIG. 4, the link support portion 32 is rotated clockwise as shown by the arrow in FIG. The pin 5 is moved to the second position. As shown in FIG. 5, when the pin 5 moves to the second position, the link 6 moves forward.

  When the link 6 moves forward, the protective cover 43 moves from the cut position to the protective position side, and the end portion on the protective position side comes into contact with the base portion 2. Thereby, the portion exposed to the outside of the cutting blade 42 is protected by the protective cover 43. When the amount of movement of the link 6 forward becomes larger than the amount of movement of the protective cover 43 from the cut position to the protective position side, the link mounting portion 45 slides relatively in the long hole 6a. The protective cover 43 can be suitably moved by absorbing the difference between the movement amount of the link 6 and the movement amount of the protective cover 43.

  Further, when the cutting part 4 is in the position closest to the base part 2 and the pin 5 is in the second position, the latching part 41D can come into contact with the pin 5. In the second position, the pin 5 is pivotally supported by the cutting portion support portion 31 and the link support portion 32, and the cutting portion support portion 31 is in the direction in which the hooking portion 41D is urged. It is possible to hold the position of the cutting portion 4 by suppressing the upward swing of the cutting portion 4 against the urging force acting on the portion 41D. Therefore, the portion exposed to the outside of the cutting blade 42 is protected by one operation of placing the pin 5 in the second position with the cutting portion 4 being closest to the base portion 2, and the cutting portion 4 is protected. Can be held at the closest position.

  Next, a tabletop cutting machine according to a second embodiment of the present invention will be described with reference to FIGS. A tabletop saw 101 that is a tabletop cutting machine shown in FIG. 6 has the same structure as the tabletop saw 1 according to the first embodiment in the main structure, and includes a base unit 102, a cutting unit 104, , And the support part 103.

  The base portion 102 includes a base 121 on which a member to be cut is placed, a turntable 122, and a fence 123. In the base portion 102, the position of the member to be cut with respect to the base portion 102 is defined as the upper side, and the opposite upper direction is defined as the lower side. The direction in which the support portion 103 is provided in the base portion 102 is defined as the rear, and the opposite direction to the rear is defined as the front.

  The turntable 122 is supported on the base 121 via a rotation shaft 124 and is rotatable about the rotation shaft 124. By turning the turntable 122, so-called rotational cutting of the member to be cut is possible. The turntable 122 is formed with an arcuate recess 122 a in which a cutting blade 142 described later is accommodated when the cutting portion 104 swings in a direction close to the base portion 102. On the front side of the turntable 122, a fixed handle 125 is provided that fixes the space between the turntable 122 and the base 121 and serves as a grasping portion when the turntable 122 is rotated. Further, on the rear side of the turntable 122, there is provided a tilting support portion 122A that is connected to the support portion 103 by a rotation shaft 135A described later and supports the support portion 103 so as to be tiltable.

  One end of the support portion 103 is configured as a pair of arms, and a pin holding hole 131a for pivotally supporting a pin 105 (described later) is formed at the end of one arm-shaped portion. . In the pin holding hole 131a, the direction in which the pin 105 slides is configured to be parallel to the axial direction of a support shaft portion 146 described later.

  The other end of the support portion 103 is pivotally supported by the tilting support portion 122A with a rotation shaft 135A. A support shaft portion 146 is provided across the pair of arm portions, and the cutting portion 104 is pivotally supported by the support shaft portion 146 so as to be tiltable. Further, the support shaft portion 146 is provided with a spring 134, and the cutting portion 104 is urged upward by the spring 134 in a direction away from the base portion 102.

  A tilt mechanism 135 is provided on the other end side of the support portion 103 and in the vicinity of the tilt support portion 122A to control the tilt of the support portion 103 and the cutting portion 104 with respect to the base portion 102. A gear and handle lever 135B (not shown) are provided in the tilt mechanism 135, and the support portion 103 and the cutting portion 104 can be held at a predetermined tilt angle by interlocking the handle lever 135B and a gear (not shown). . By tilting the support portion 103 and the cutting portion 104, so-called inclined cutting of the member to be cut is possible.

  Each of the pins 105 pivotally supported by the pin holding holes 131a has a substantially cylindrical contact portion 105A, a first shaft portion 105B, a second shaft portion 105C, and a sliding shaft portion 105D that are coaxial and in series. Is provided. The contact portion 105A has the largest diameter, and the first shaft portion 105B has a smaller diameter than the contact portion 105A and a larger diameter than the second shaft portion 105C and the sliding shaft portion 105D. The second shaft portion 105C has a smaller diameter than the sliding shaft portion 105D. The sliding shaft portion 105D is formed to have substantially the same diameter as the inner diameter of the pin holding hole 131a, and can slide in the axial direction within the pin holding hole 131a. A washer 105E for preventing the pin 105 from coming off is provided at a position opposite to the end of the sliding shaft 105D in the direction in which the second shaft 105C and the like are arranged. In addition, as shown in FIG. 8, the position where only the second shaft portion 105C enters the pin holding hole 131a and only the contact portion 105A and the first shaft portion 105B protrude from the pin holding hole 131a is the first sliding position. The moving position, as shown in FIG. 11, the position where the contact portion 105A, the first shaft portion 105B, and the second shaft portion 105C are protruding from the pin holding hole 131a is defined as the second sliding position.

  The cutting part 104 is mainly composed of a frame 141, a cutting blade 142, and a protective cover 143. The frame 141 includes a cutting blade placement portion 141A on which the cutting blade 142 is disposed, a handle 141B that is provided on the front side and serves as a grasping position when the cutting portion 104 swings, and a holding portion for transporting the tabletop circular saw 101 And a transport handle 141C. A motor (not shown) for driving the rotating shaft 142A of the cutting blade 142 is built in the frame 141, and a switch (not shown) for controlling the driving of the motor (not shown) is provided on the handle 141B. When the switch (not shown) is turned on, the cutting blade 142 arranged in the cutting blade placement portion 141A by a motor (not shown) is rotated about the rotation shaft 142A.

  The protective cover 143 is attached to the frame 141 so as to be rotatable by a rotation shaft portion 144 so as to cover the cutting blade arrangement portion 141A and the cutting blade 142. The rotation shaft portion 144 is disposed above the rotation shaft 142A of the cutting blade 142. Therefore, the protective cover 143 can rotate around the cutting blade 142 and the cutting blade placement portion 141A. As shown in FIG. 6, the protective cover is provided at a position (protective position) where almost all of the portion exposed from the cutting blade arrangement portion 141 </ b> A of the cutting blade 142 is covered in a state where the cutting portion 104 is farthest from the base portion 102. 143 is arranged.

  In addition, a link attachment portion 145 is disposed at a position above the rotation shaft portion 144 of the protective cover 143 in a state where the cutting portion 104 is farthest from the base portion 102. A plate-like link 106 is provided between the link attachment portion 145 and the pin 105.

  The link 106 is formed with a first hole 106 a and a second long hole 106 b into which the pin 105 is inserted on one end side, and a long hole 106 c with a link attachment portion 145 inserted in the other end in the longitudinal direction of the link 106. Has been. The first hole 106a has substantially the same diameter as the first shaft portion 105B, and the link 106 can be rotated about the pin 105 in a state where the first shaft portion 105B is inserted into the first hole 106a. . The second long hole 106b is formed to have a width substantially equal to the outer diameter of the second shaft portion 105C, and the link 106 is connected to the pin 105 in a state where the second shaft portion 105C is inserted into the second long hole 106b. It can slide and rotate. Since the first shaft portion 105B has a larger diameter than the second shaft portion 105C, it cannot be inserted into the second long hole 106b. Therefore, the link 106 can move in the longitudinal direction of the link 106 with respect to the cutting portion support portion 131, the link attachment portion 145, and the protective cover 143.

  Further, as shown in FIGS. 7 and 8, in the frame 141 and in the vicinity of the position of the pin 105, which is one end of the link 106, a first hooking portion 141 </ b> D and a second hooking portion that can be hooked with the pin 105. 141E is provided. The second latching portion 141E is defined at a position that is the bottom surface of the frame 141 with the cutting portion 104 being the farthest from the base portion 102. The first latching portion 141D is the second latching portion 141E. The second latching portion 141 </ b> E is defined at a position recessed in the frame 141 from the defined bottom surface, which is a side surface portion substantially orthogonal to the defined bottom surface. Therefore, in the state where the pin 105 is in the first sliding position, the contact portion 105A contacts the first hooking portion 141D, and the position of the pin 105 at this time becomes the first position. In a state where the pin 105 is in the second sliding position, the contact portion 105A contacts the second hooking portion 141E, and the position of the pin 105 at this time becomes the second position.

  As shown in FIG. 6, the cutting portion 104 is biased in a direction away from the base portion 102, but when the pin 105 is in the first position, the contact portion 105 </ b> A is in contact with the first latching portion 141 </ b> D. By abutting, the cutting part 104 cannot move upward from the position shown in FIG. Therefore, the position where the cutting part 104 is farthest from the base part 102 is defined by the pin 105 and is held at that position.

  FIG. 9 shows a state in which the cutting part 104 is closest to the base part 102. In this state, the protective cover 143 is pulled rearward relative to the cutting blade placement portion 141A by the link 106, and rotates around the cutting blade placement portion 141A and the cutting blade 142 so as to substantially cut the blade placement portion 141A. It is arranged at a position (cutting position) that covers only. Therefore, the cutting blade 142 is exposed, and a part of the exposed cutting blade 142 is inserted into an arcuate recess 122 a formed in the turntable 122. A stopper (not shown) works in a state where the cutting portion 104 is swung to the position shown in FIG. 9, and the position closest to the base portion 102 of the cutting portion 104 is defined.

  In this state, there is a gap between the cutting blade placement portion 141A and the surface of the base portion 102. Therefore, a part of the cutting blade 142, more specifically, between the cutting blade placement portion 141A and the base portion 102 surface, and The front position portion is exposed to the outside. Therefore, the link 106 is moved forward to cover the exposed portion with the protective cover 143.

  In order to move the link 106 forward, as shown in FIG. 11, the pin 105 is slid to the second position so that the second shaft portion 105C can be inserted into the second long hole 106b. Since the link 106 is pulled to the front side by the protective cover 143, as shown in FIG. 10, the second shaft portion 105C enters the second long hole 106b, and the link 106 moves forward.

  When the link 106 moves forward, the protective cover 143 moves from the cutting position to the protective position side, and the end portion on the protective position side comes into contact with the base portion 102. Thereby, the portion exposed to the outside of the cutting blade 142 is protected by the protective cover 143. If the amount of movement of the link 106 to the front is larger than the amount of movement of the protective cover 143 from the cut position to the protective position side, the link mounting portion 145 slides relatively in the long hole 106c. The protective cover 143 can be suitably moved by absorbing the difference between the movement amount of the link 106 and the movement amount of the protective cover 143.

  Further, when the cutting portion 104 is in the position closest to the base portion 102 and the pin 105 is in the second position, the second hooking portion 141E can come into contact with the contact portion 105A. Since the pin 105 is pivotally supported by the cutting part support part 131, the pin 105 resists the urging force acting on the second hooking part 141E and suppresses the upward swinging of the cutting part 104, and the position of the pin 105 is reduced. Can be held. Therefore, the portion exposed to the outside of the cutting blade 142 is protected by one operation of placing the pin 105 at the second position with the cutting portion 104 closest to the base portion 102, and the cutting portion 104 is also protected. Can be held at a position closest to the base portion 102.

  In the first embodiment and the second embodiment, the description of the turning state and the tilting state of the tabletop cutting machine is not particularly given, but the cutting blade by the protective cover regardless of the turning state and the tilting state. It goes without saying that the protection and the cutting portion can be held in a state of being closely spaced from the base portion.

  Moreover, the tabletop cutting machine by this invention is not limited to embodiment mentioned above, Various deformation | transformation and improvement described in the claim are possible. For example, in the first embodiment and the second embodiment, the cutting portion can be rotated and tilted, but the present invention is also applied to a tabletop cutting machine that does not include a mechanism related to these rotation and tilt. Can adapt.

The side view which shows the tabletop cutting machine which concerns on the 1st Embodiment of this invention. The partial side view which shows the support part periphery of the tabletop cutting machine which concerns on the 1st Embodiment of this invention. The partial rear view which shows the support part periphery of the tabletop cutting machine which concerns on the 1st Embodiment of this invention. The side view which shows the state which the tabletop cutting machine concerning the 1st Embodiment of this invention rock | fluctuated. The side view which shows the state by which the tabletop cutting machine which concerns on the 1st Embodiment of this invention rock | fluctuated, and the cutting blade was protected. The side view which shows the tabletop cutting machine which concerns on the 2nd Embodiment of this invention. The partial side view which shows the support part periphery of the tabletop cutting machine which concerns on the 2nd Embodiment of this invention. Sectional drawing along the VIII-VIII line of FIG. The side view which shows the state which the tabletop cutting machine which concerns on the 2nd Embodiment of this invention rock | fluctuated. The side view which shows the state by which the tabletop cutting machine which concerns on the 2nd Embodiment of this invention rock | fluctuated, and the cutting blade was protected. Sectional drawing along the XI-XI line of FIG.

Explanation of symbols

1, 101 ... Tabletop circular saw 2, 102 ... Base part 3, 103 ... Support part 4, 104 ... Cutting part 105, ... Pin 105A ... Contact part 105B ... First shaft part 105C・ Second shaft portion 105D ・ ・ Sliding shaft portion 105E ・ ・ Washers 6, 106 ・ ・ Link 106a ・ ・ First hole 106b ・ ・ Second long holes 6a and 106c ・ ・ Long holes 21, 121 ・ ・ Base 22 122 ·· Turntable 22A, 122A ·· Tilt support portion 22a, 122a ·· Arc-shaped recess 23, 123 ·· Fence 24, 124 ·· Rotating shaft 25, 125 ·· Fixed handle 31, 131 ·· Cut portion support portion 32, 132 ... Link support 33 33 133 Bolts 34, 134 Spring 35, 135 Tilt mechanism 35A, 135A ... Shaft 35B, 135B ... Handle lever 41, 1 1. Frame 41A, 141A ... Cutting blade arrangement part 41B, 141B ... Handle 41C, 141C ... Transport handle 41D ... Hanging part 141D ... First hook part 141E ... Second hook part 42 .. 142 .. Cutting blade 42A, 142A .. Rotating shaft 43, 143 .. Protective cover 44, 144 .. Rotating shaft portion 45, 145 .. Link mounting portion 46, 146.

Claims (5)

A base for supporting the member to be cut;
A cutting part that rotatably supports the cutting blade;
A support portion that is provided on the base portion and supports the cutting portion so as to be swingable in the direction of approaching and separating from the base portion above the base portion;
A pin provided on the support part, a protective cover provided on the cutting part via a rotation shaft,
A table cutting machine comprising: a link having one end pivotally supported by the pin and the other end pivotally supported by the protective cover at a position different from the rotational axis;
A hooking portion is provided at a location near the one end of the link in the cut portion,
The pin has a first position where the pin is hooked with the hook portion and the cutting portion is held at a swing position farthest from the base portion, and the pin is hooked with the hook portion and the cutting portion is the base A tabletop cutting machine that is selectively movable between a second position that holds a swing position that is closest to the section. The support portion includes a cutting portion support portion and a link support portion that is rotatable between a first rotation position and a second rotation position.
The link support portion includes the pin at one end and is rotatably connected to one end of the cutting portion support portion at the other end.
The cutting portion support portion is connected to the base portion,
The pin is in the first position when the link support is in the first rotation position, and the pin is in the second position when the link support is in the second rotation position. The tabletop cutting machine according to claim 1. The support portion is disposed on the rear end side of the base portion,
The protective cover is located on the front end side of the base portion, and moves from a cutting position that exposes the cutting blade to a protective position that covers the cutting blade as the link moves from the rear end side to the front end side. Is possible,
With the cutting portion being closest to the base portion, the link is moved from the rear end side as the link support portion moves from the first rotation position to the second rotation position. 3. The tabletop cutting machine according to claim 2, wherein the protective cover moves from the cutting position toward the protective position while moving in the front end direction. The support portion is formed with a pin holding hole for supporting the pin so that the pin can slide in the axial direction of the pin between the first sliding position and the second sliding position on one end side. Connected to the base,
The latching portion has a first latching portion and a second latching portion in a region different from the first latching portion,
When the pin is in the first sliding position, the pin abuts the first latching portion to provide the first position, and when the protrusion is in the second sliding position, the protrusion 2. The tabletop cutting machine according to claim 1, wherein the second portion is provided in contact with the second hooking portion. The support portion is disposed on the rear end side of the base portion,
The protective cover is located on the front end side of the base portion, and moves from a cutting position that exposes the cutting blade to a protective position that covers the cutting blade as the link moves from the rear end side to the front end side. Is possible,
With the cutting portion being closest to the base portion, the link is moved from the rear end side to the front end as the pin moves from the first sliding position to the second sliding position. The tabletop cutting machine according to claim 4, wherein the protective cover moves in a lateral direction and the protective cover moves from the cutting position to the protective position.

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