JP2019089280A - Parallel ruler and portable working machine - Google Patents

Abstract

To provide a parallel ruler that can enhance linear accuracy in working and that can be compact.SOLUTION: A parallel ruler 40 for a portable working machine 1 that is driven by an electric motor 4 includes two linkage members 60 for attaching the parallel ruler 40 to a base 2 of the portable working machine 1. According to the adjustment of a linkage pitch P2 of the two linkage members 60, a whole length L of the parallel ruler 40 itself extends and shrinks. Unlike conventional ones, the whole length L of the parallel ruler 40 is short and the parallel ruler 40 can therefore be compact.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a parallel ruler and a portable processing machine, and more particularly to a parallel ruler and a portable processing machine for a portable processing machine driven by an electric motor.

  Conventionally, a parallel ruler is known which is composed of a connecting member having a guide surface which can be pressed against the side surface of a workpiece (for example, wood) and a connecting member slidable with respect to the connecting member. When the guide surface of the connection member is made to run along the side surface of the workpiece while the coupling member of such a parallel ruler is attached to the right side of a portable processing machine (for example, a portable marnoko), this portable processing machine Can be moved straight relative to the workpiece. Therefore, the workpiece can be processed (for example, cut) in a straight line (straight). Here, Patent Document 1 below discloses a parallel ruler 140 in which two coupling members 160 are provided at the front and back (see FIG. 9). As a result, the operation along the side of the workpiece with the portable processing machine can be made stable. Therefore, the linear accuracy of processing can be enhanced.

JP, 2015-101002, A

  However, in the technique of Patent Document 1 described above, the total length l of the parallel ruler 140 is not shortened even if the coupling pitch p2 of the two coupling members 160 is narrowed. Therefore, there has been a problem that the parallel ruler 140 can not be made compact.

  The present invention is intended to solve such a problem, and an object thereof is to provide a parallel ruler that can be made compact while being able to improve the linear accuracy of processing.

The present invention is for achieving the above-mentioned object, and is configured as follows.
The invention according to claim 1 is a parallel ruler for a portable processing machine driven by an electric motor. This parallel ruler is provided with two connecting members for attaching to the base of a portable processing machine, and the total length of the parallel ruler itself is expanded and contracted according to the adjustment of the connecting pitch of the two connecting members.

  According to the invention of claim 1, since the parallel ruler is provided with two connecting members, the operation along the side of the processing machine for the side of the workpiece can be stabilized as in the prior art. . Therefore, the linear accuracy of processing can be enhanced. In addition, if the connection pitch of the two connecting members of the parallel ruler is adjusted to be wide (long), the total length of the parallel rule will be extended (long). In addition, if the joint pitch of the two joint members of the parallel ruler is adjusted to be narrow (short), the total length of the parallel ruler will be contracted (shortened). Therefore, unlike the prior art, narrowing the coupling pitch of the two coupling members of the parallel ruler shortens the total length of the parallel ruler. Therefore, this parallel ruler can be made compact.

  The invention according to claim 2 is the parallel ruler according to claim 1, further comprising a guide plate having a guide surface which can be pressed against the side surface of the workpiece. The bonding pitch is set longer than the guide length of the guide plate.

  According to invention of Claim 2, shortening of the full length of a parallel ruler is attained.

  The invention according to claim 3 is the parallel ruler according to any one of claims 1 to 2, comprising: a connecting member; and two supporting members which can slide both ends of the connecting member. . Adjustment of the coupling pitch is performed by relative sliding of the two support members with respect to the coupling member.

  According to the invention of claim 3, the parallel ruler can be made more compact.

  The invention according to claim 4 is the parallel ruler according to any one of claims 2 to 3, wherein the guide plate can be assembled to any of the two support members.

  According to the invention of claim 4, when the parallel ruler is attached to the opposite side (for example, the left side) of the portable processing machine, alignment of the portable processing machine with respect to the opposite side surface (for example, the left side) of the workpiece The operation can be made stable. Therefore, it is possible to cut the left and right reverse (for example, left) portions of the workpiece.

  The invention according to claim 5 is the parallel ruler according to any one of claims 2 to 4, wherein the mounting position of the guide plate can be adjusted in the front-rear direction of the support member.

  According to the invention of claim 5, the pressing of the guide plate against the side surface of the workpiece can be carried out at the desired front and back position.

  Moreover, invention of Claim 6 is a portable processing machine carrying the parallel ruler in any one of Claims 1-5.

  According to the sixth aspect of the present invention, at least the same function and effect as those of the first aspect can be obtained.

It is a perspective view which shows the example of use of a parallel ruler. In FIG. 1, it is an exploded view which shows the state which removed the parallel ruler from the portable marnoco. It is an enlarged view of the parallel ruler of FIG. It is an exploded view of FIG. In FIG. 3, it is a figure which shows the state which made coupling | bonding pitch maximum. It is a figure which shows the state which made coupling | bond pitch minimum in FIG. It is a top view of FIG. It is a top view of FIG. It is a perspective view of a parallel ruler of prior art.

  Hereinafter, modes for carrying out the present invention will be described with reference to FIGS. In the following description, “portable marnoco 1”, “wood 80” and “cutting” will be described as examples of “portable processing machine”, “processed material” and “processing”. Further, in the following description, upper, lower, front, rear, left, and right indicate directions of upper, lower, front, rear, left, and right described in the above-described drawings. That is, the front direction indicates the cutting direction (traveling direction) of the portable marnoco 1. First, the portable marnoco 1 and the parallel ruler 40 for the portable marnoco 1 will be described separately.

  First, the portable marnoco 1 will be described with reference to FIGS. The portable circular saw 1 is composed of a base 2 having a rectangular shape in plan view and a circular saw main body 3 provided with a disk-shaped saw blade 6 rotatably driven by an electric motor 4 on the base 2. The main body 3 includes a motor housing 7 accommodating the electric motor 4, a handle housing 8 connected to the motor housing 7, and a fixed cover 9 covering an upper portion of the saw blade 6. The saw blade 6 is axially supported in parallel with an output shaft (not shown) of the electric motor 4 in the fixed cover 9 and is connected orthogonally to the tip of the rotating shaft 10 as an output portion to be rotationally transmitted from the output shaft. ing. A power supply unit 11 is provided in the handle housing 8, and a power supply cable 12 having an insertion plug (not shown) is connected to the power supply unit 11. For example, a power supply of AC 100 V is supplied to the power supply cable 12. 6a is a movable cover which covers the lower part of the saw blade 6 in a normal state.

  The fixed cover 9 is pivotally mounted so that the front direction in the cutting direction of the base 2 can be vertically pivoted by a support shaft 14 to a bracket 13 having a U-shape in plan view. The bracket 13 can be fixed at an arbitrary position along the guide groove 16 by a thumb screw 17 having a knob 18 on an angular plate 15 erected on the base 2 and having an arc-shaped guide groove 16. It is linked via 15a. On the other hand, on the rear side of the fixed cover 9 as well, an angular plate (not shown) having an arc-shaped guide groove (not shown) is erected on the base 2 and this angular plate is located on the side of the fixed cover 9 A depth guide 19 curving in an arc shape toward the front is fixedly connected by the lever 20 at an arbitrary position along the guide groove.

  Therefore, by changing the clamp position of the fixed cover 9 along the depth guide 19, the marnoko main body 3 is swung around the support shaft 14, and the protrusion amount of the saw blade 6 below the base 2 (notching Amount) can be adjusted. Further, by changing the fixed position of the bracket 13 and the depth guide 19 in the front and rear angular plates 15, the saw blade 6 tilts rightward from the perpendicular position where the saw blade 6 is orthogonal to the base 2 and the saw blade 6 The base 2 can be fixed at any inclination angle up to a maximum inclination position inclined at an angle of 45 °. At the front end of the base 2, notches 25 whose side edges are located on the extension of the saw blade 6 at the right angle (0 °) position and 45 ° position of the saw blade 6 are formed. By aligning the side edge of the incision 25 with the written black line, cutting along the black line is easily possible.

  On the other hand, the handle housing 8 has a loop shape formed by assembling two halves of the left and right half housings 26 with the screws 27 on the left and right sides, and the upper side thereof is a holding portion 8a that can be held by one hand. On the lower side in the handle housing 8, a controller (not shown) having a switching element, a microcomputer and the like is accommodated. Reference numeral 35 denotes a trigger for turning on a switch (not shown) by the pressing operation. Reference numeral 37 denotes a lock on button for locking the switch ON state by pressing either the left or the right in a state where the trigger 35 is pressed. By pressing the trigger 35 again, the switch ON state can be released.

  Reference numeral 38 denotes a ruler mounting portion 38 formed on the front and back of the base 2 respectively. The ruler mounting portion 38 can insert the long piece 61 of the connecting member 60 of the parallel ruler 40 described later from the tip end 61a side. The two ruler mounting portions 38 are provided with knob screws 39 each having a bolt (not shown). As a result, when the bolt of the pick screw 39 is tightened on the long piece 61 inserted into the ruler attachment portion 38, the inserted long piece 61 can be prevented from dropping off from the ruler attachment portion 38. Therefore, the parallel ruler 40 can be attached to the portable circular saw 1.

  The controller, the switch, the power supply unit 11 and the electric motor 4 are connected by lead wires (not shown). As a result, when the switch is turned on by the pressing operation of the trigger 35, a motor control circuit which drives the electric motor 4 is formed. Then, when the trigger 35 is pushed in, the switch is turned on, power is supplied from the power supply unit 11 to the electric motor 4 through the power cable 12, and the electric motor 4 is driven to rotate an output shaft (not shown). Thereby, the saw blade 6 can be rotated to cut the wood 80. The portable marnoco 1 is configured in this manner.

  Next, the parallel ruler 40 will be described with reference to FIGS. The parallel ruler 40 mainly includes a square cylindrical connecting member 41, and a square cylindrical supporting member 50 having an inner surface slidable with respect to the outer surface of the connecting member 41, and both the supporting members 50. , And a guide plate 70 attached to the support member 50 on the front side.

  Hereinafter, the connection member 41, the front and rear support members 50, the front and rear connection members 60, and the guide plate 70 will be individually described. The support member 50 is configured to be symmetrical in the front and back direction. Therefore, by describing the front support member 50, the description of the rear support member 50 will be omitted. The same applies to the connecting member 60.

  The connecting member 41 is formed in a square tubular shape having an upper wall 42, a lower wall 43, a left wall 44 and a right wall 45. At the front and rear positions of the lower wall 43, screw holes 43a are formed, respectively, to which a first screw 46 described later can be screwed. Further, at the front and back positions of the right wall 45, relief long holes 45a are formed, respectively, through which a thumb screw 55 described later can be released. The connecting member 41 is configured as described above.

  In addition, the support member 50 on the front side is also formed in a square tubular shape having the upper wall 51, the lower wall 52, the left wall 53, and the right wall 54. A pitch adjustment groove 52a into which a first screw 46 described later can be inserted is formed at the rear of the lower wall 52. Further, at a rear position of the left wall 53, a release groove 53a is formed which can release a thumb screw 55 described later. Further, also at a rear position of the right wall 54, a release groove 54a which can release a thumb screw 55 described later is formed. Further, at a position near the center of the right wall 54, a screwing hole 54b capable of screwing a second screw 63 described later is formed. Further, insertion holes 54c into which positioning pins 64 described later can be inserted are formed at the upper and lower positions near the center of the right wall 54. The front support member 50 is configured in this manner.

  Further, in the front side coupling member 60, the long piece 61 and the short piece 62 are bent in a substantially L shape. The end 61a side of the long piece 61 can be inserted into the ruler mounting portion 38 of the portable marnoco 1 as described above. The short piece 62 is formed with a through hole 62 a into which a second screw 63 described later can be inserted. Further, in the short piece 62, insertion holes 62b into which positioning pins 64 described later can be inserted are formed at the top and bottom. The front coupling member 60 is configured in this manner.

  Further, the guide plate 70 is formed of a plate-like member having a guide surface 71 capable of pressing the right side surface 81 of the wood 80 on the left side thereof. At a position near the center of the guide plate 70, a bead 72 having a screwing hole 72a capable of screwing a pick screw 55 described later is formed. The front and back length of the guide plate 70 is a guide length G. The guide plate 70 is configured as described above.

  Next, an example of the procedure of assembling the parallel ruler 40 composed of the connecting member 41, the two front and rear supporting members 50, the two front and rear connecting members 60, and the guide plate 70 will be described.

  First, the positioning pins 64 are inserted into both insertion holes 62b of the front side coupling member 60, and the inserted positioning pins 64 are inserted into both insertion holes 54c of the front support member 50. Next, the second screw 63 is inserted into the through hole 62a of the front side coupling member 60, and the inserted second screw 63 is screwed into the screwing hole 54b of the front side support member 50. As a result, the front coupling member 60 is assembled to the front support member 50. Further, in this assembly, both positioning pins 64 can prevent the front side connecting member 60 from rotating with respect to the front side supporting member 50. This assembly is also performed on the rear side coupling member 60.

  Next, the pick screw 55 is inserted into the release groove 54a and the release groove 53a of the front support member 50, and the inserted set screw 55 is screwed into the screw hole 72a of the guide plate 70. Thereby, the guide plate 70 is assembled to the front support member 50. As described above, the release groove 54a and the release groove 53a of the front support member 50 can release the pick screw 55. Therefore, when the guide plate 70 is assembled to the front support member 50, the assembly position of the guide plate 70 can be adjusted in the front-rear direction of the front support member 50 (can be assembled at any position). Also, the guide plate 70 can be assembled to the rear side support member 50 instead of the front side support member 50.

  Finally, with the rear end of the front support member 50 inserted into the front end of the connection member 41 (the front support member 50 can slide relative to the connection member 41), the front support member The first screw 46 is inserted into the pitch adjustment groove 52a of 50, and the inserted first screw 46 is screwed into the screwing hole 43a on the front side of the connecting member 41. Thus, the front support member 50 is assembled to the connection member 41. This assembly is also performed on the rear side support member 50. As described above, the pitch adjustment groove 52a of the front support member 50 can release the first screw 46.

  Therefore, when the front support member 50 is assembled to the connection member 41, the front support member 50 can be adjusted in the front-rear direction (assembled at an arbitrary position). The same applies to the rear side support member 50. Thereby, the joint pitch P2 of the two joint members 60 of the parallel ruler 40 can be adjusted. That is, the adjustment of the coupling pitch P2 is performed by the relative slide of the two support members 50 with respect to the connection member 41. The coupling pitch P2 is set to be longer than the guide length G of the guide plate 70 of the parallel ruler 40. The parallel ruler 40 is assembled in this manner.

  The parallel ruler 40 assembled in this manner can be mounted on the right side of the portable marnoco 1 as described above. Therefore, as in the prior art, the operation of the portable marnoco 1 along the right side surface 81 of the wood 80 can be stabilized. Therefore, the linear accuracy of cutting can be enhanced.

  In addition, according to the size of the portable circular saw 1 to attach, the attachment pitch of the both ruler attaching part 38 is various. For example, when the size of the portable circular saw 1 is large, the mounting pitch P1 of the both ruler mounting portions 38 is wide (long). In such a case, as shown in FIGS. 5 and 7, the connection pitch P2 of the two connection members 60 of the parallel ruler 40 may be adjusted to be wide (long). In addition, when it adjusts in this way, the full length L of the parallel ruler 40 will be extended (it becomes long). Further, for example, when the size of the portable marnoco 1 is small, the mounting pitch P1 of the both ruler mounting portions 38 is narrow (short). In such a case, as shown in FIGS. 6 and 8, the connection pitch P2 of the two connection members 60 of the parallel ruler 40 may be adjusted to be narrow (short). In addition, if it adjusts in this way, the full length L of the parallel ruler 40 will be shrunk (it becomes short).

  The parallel ruler 40 according to the embodiment of the present invention is configured as described above. According to this configuration, since the parallel ruler 40 is provided with the two connecting members 60, it is possible to stabilize the operation along the right side surface 81 of the wood 80 along the portable marnoco 1 similarly to the prior art. . Therefore, the linear accuracy of cutting can be enhanced. Further, according to this configuration, when the coupling pitch P2 of the two coupling members 60 of the parallel ruler 40 is adjusted to be wide (long), the total length L of the parallel ruler 40 is extended (long). Further, when the connection pitch P2 of the two connecting members 60 of the parallel ruler 40 is adjusted to be narrow (short), the total length L of the parallel ruler 40 is contracted (shortened). Therefore, unlike the prior art, when the connecting pitch P2 of the two connecting members 60 of the parallel ruler 40 is narrowed, the total length L of the parallel ruler 40 is shortened. Therefore, the parallel ruler 40 can be made compact.

  Further, according to this configuration, the coupling pitch P2 of the parallel ruler 40 is set longer than the guide length G of the guide plate 70 of the parallel ruler 40. Therefore, shortening of the full length L of parallel ruler 40 is attained.

  Further, according to this configuration, the adjustment of the coupling pitch P2 of the parallel ruler 40 is performed by the relative slide of the two support members 50 with respect to the connection member 41. Therefore, the parallel ruler 40 can be made more compact.

  Further, according to this configuration, the guide plate 70 can be assembled to the rear support member 50 instead of the front support member 50. Therefore, when the parallel ruler 40 is attached to the opposite side (left side) of the portable marnoko 1, the operation of aligning the portable marnoco 1 to the opposite side surface (left side not shown) of the wood 80 is performed as in the embodiment. It can be stable. Therefore, it is possible to cut the left and right reverse (left) sites of the wood 80.

  Further, according to this configuration, the mounting position of the guide plate 70 with respect to the front support member 50 can be adjusted in the front-rear direction of the front support member 50 (assembled at any position). Therefore, the pressing of the guide surface 71 of the guide plate 70 against the right side surface 81 of the wood 80 can be performed at a desired front and back position.

  The above-described content relates to only one embodiment of the present invention, and does not mean that the present invention is limited to the above-described content.

  In the embodiment, as an example of the “portable processing machine”, the “portable marnoco 1” has been described. However, the present invention is not limited to this, and may be "jigsaw", "router" or the like. Further, in the embodiment, as the power source of the portable marnoko 1, a mode in which a voltage of AC 100 V is supplied by the power cable 12 has been described. However, the present invention is not limited to this, and as a power supply of the portable marnoko 1, various power supplies such as DC 18 V and DC 36 V may be supplied by a battery pack.

DESCRIPTION OF SYMBOLS 1 portable marnoko 2 base 3 marnoco main body 4 electric motor 6 saw blade 6a movable cover 7 motor housing 8 handle housing 8a grip portion 9 fixed cover 10 rotating shaft 11 power supply 12 power cable 12 bracket 14 support shaft 15 angular plate 15a support shaft Reference Signs List 16 guide groove 17 pinching screw 18 pinching portion 19 depth guide 20 lever 25 cut 26 half housing 27 screw 35 trigger 37 lock on button 38 ruler attachment portion 39 pinching screw 40 parallel ruler 41 connecting member 42 upper wall 43 lower wall 43a screwing Hole 44 Left wall 45 Right wall 45a Relief long hole 46 1st screw 50 Support member 51 Upper wall 52 Lower wall 52a Pitch adjustment groove 53 Left wall 53a Relief groove 54 Right wall 54a Relief groove 54b Screwing hole 54c Insertion hole 55 Picking Screw 60 Coupling member 61 Long piece 61 a Tip 62 Piece 62a through hole 62b insertion hole 63 second screw 64 positioning pin 70 the guide plate 71 guide surface 72 bead 72a screw hole 80 timber 81 right side G guide length L full length P1 mounting pitch P2 binding pitch

Claims (6)

A parallel ruler for a portable processing machine driven by an electric motor,
It has two connecting members for attaching to the base of the portable processing machine,
A parallel ruler in which the total length of the parallel ruler is expanded and contracted in accordance with the adjustment of the joint pitch of the two joint members. The parallel ruler according to claim 1, wherein
It has a guide plate with a guide surface that can be pressed against the side of the workpiece,
The parallel ruler, wherein the coupling pitch is set longer than the guide length of the guide plate. The parallel ruler according to any one of claims 1 to 2, wherein
A connecting member; and two supporting members which can slide both ends of the connecting member,
The parallel ruler in which the adjustment of the coupling pitch is performed by the relative slide of the two support members with respect to the connection member. The parallel ruler according to any one of claims 2 to 3, wherein
The parallel ruler, wherein the guide plate can be assembled to any of the two support members. A parallel ruler according to any one of claims 2 to 4, wherein
The parallel ruler wherein the assembly position of the guide plate is adjustable in the front-rear direction of the support member. A portable processing machine equipped with the parallel ruler according to any one of claims 1 to 5.

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