JP2019084594A - Guide device - Google Patents

Abstract

To provide a guide device that allows even an unskilled worker to easily position a tip of a drill bit of an electric drill.SOLUTION: A guide device 1 comprises an engagement part 5 which engages with an object to be drilled. The engagement part 5 comprises a contact part 51 that contacts an end surface B1 of the object to be drilled and a first holding part 52 and a second holding part 53 which can contact one surface B2 and the other surface B3 respectively of the object to be drilled. The first holding part 52 is configured to be able to fluctuate around a first shaft nearly parallel to a drill shaft Ax1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a guide device. More specifically, the present invention relates to a guide device for a motorized drill used when drilling an end surface of a plate-like drilling object having a predetermined thickness.

  Patent Document 1 discloses a guide attachment of a power drill as a device for assisting in drilling a hole in a portion to be drilled by the power drill. The guide attachment of the electric drill is a pair of slides in which a guide holder attached to the electric drill, an abutting member abutted against a portion to be drilled such as concrete or tile, and a guide rod and a guide cylinder in a nested manner A guide and an adjustment female screw member screwed to the guide cylinder to control the depth of the hole by the electric drill are provided.

JP, 2009-285821, A

  However, in the case of the guide attachment of the electric drill shown in Patent Document 1 described above, although the depth can be adjusted, the position of the tip of the drill bit of the electric drill needs to be aligned by the operator who operates the electric drill. Therefore, there is a possibility that the position of the tip of the drill bit of the electric drill may be displaced. In particular, when making a hole in a narrow place such as the open end of a door, even a slight misalignment may contribute to the generation of a defective product.

  Therefore, in view of such problems, the present invention provides a guide device for a power drill which allows even a non-skilled worker to easily align the tip of the drill bit of the power drill. To aim.

  The guide device according to the present invention is a guide device for an electric drill used when drilling an end surface of a plate-like drilling object having a predetermined thickness, wherein the guide device is mounted at the base end of the drill bit To be guided along the guide portion along with the mounting portion to be fixed, the guide portion extending along the direction substantially parallel to the drill axis of the drill bit, and the drilling target to be drilled by the rotation of the drill bit And an engaging portion engaged with the object to be drilled at the time of drilling the object to be drilled, wherein the engaging portion is a contact portion to be in contact with the end face of the object to be drilled, and a thickness direction of the object to be drilled A first space spaced apart from each other at a predetermined interval so as to be able to sandwich the drilling object, and capable of respectively abutting one surface and the other surface extending perpendicularly to the end surface of the drilling object Clamping section and second clamp And the first holding unit and the second holding unit are provided between the first holding unit and the second holding unit when the drill bit moves in the drilling direction. Are disposed such that the first holding portion has a contact surface capable of abutting on one surface of the object to be drilled, and is configured to be pivotable about a first axis substantially parallel to the drill axis When the guide device is rotated about the drill axis, the contact surface of the first gripping portion abuts the one surface, and the second gripping portion abuts the other surface. The drill axis is aligned.

  In addition, the second holding portion is curved at a predetermined curvature about a second axis substantially parallel to the drill axis, and has a curved surface that abuts on the other surface of the drilling target, and the axis of the drill axis When viewed in a direction, the first axis of the first holding portion, the second axis of the second holding portion, and the drill axis are aligned on a straight line, and the drill axis is It is preferable that the mounting portion be provided at a central portion of the first shaft and the second shaft.

  Further, the guide unit includes a moving member which is movable along the extending direction of the guide unit and can be held at a predetermined position in the extending direction of the guide unit, and the guided portion is the moving member. Preferably, movement of the drill bit is restricted by abutting on the

  Further, the moving member restricts relative movement of the guiding portion with respect to the guided portion, thereby restricting the tip of the drill bit from protruding in the drilling direction beyond the abutting portion. preferable.

  Further, the movement member controls the movement amount of the relative movement of the guide portion relative to the guided portion within a predetermined range, whereby the projection amount of the tip of the drill bit from the contact portion in the drilling direction It is preferable to be able to adjust the drilling depth by the drill bit by restricting to a predetermined amount.

  Moreover, it is preferable that the said guide apparatus is provided with the holding part operated in order to apply the rotational force around the said drill axis | shaft to the said guide apparatus.

  Further, the mounting portion includes a bearing portion, and a cylindrical member rotatable around the drill axis with respect to the bearing portion, and capable of inserting a base end portion of the drill bit, the cylindrical member being And at least one slit extending in the axial direction on one end side in the axial direction, and an external thread portion, and on the other end side in the axial direction, a rotation stopping portion engageable with a predetermined tool; It is preferable that the drill bit can be attached to the mounting portion by fastening a fastening member to the male screw portion of the cylindrical member.

  According to the guide device of the present invention, even an unskilled worker can easily align the tip of the drill bit of the power drill.

It is a side view showing a guide device of one embodiment of the present invention. It is a perspective view of the guide apparatus shown by FIG. It is a fragmentary sectional view which shows the joining state of the attaching part of the guide apparatus shown by FIG. 1, and a drill bit. (A) is a side view which shows the cylindrical member of the attaching part of a guide apparatus, (b) is a figure which shows the state which the tool engaged with the rotation prevention part of the cylindrical member. It is the figure which looked at the guide apparatus shown by FIG. 1 from the engaging part side. It is a figure which shows the state by which the door plate was clamped by the 1st clamping part and 2nd clamping part of the guide apparatus shown by FIG. It is a figure which shows the state by which the door plate whose length of the thickness direction is shorter than the door plate shown by FIG. 6 was clamped by the 1st clamping part and the 2nd clamping part.

  Hereinafter, a guide device according to an embodiment of the present invention will be described with reference to the drawings. The following embodiment is merely an example, and the guide device of the present invention is not limited to the following embodiment.

  As shown in FIG. 1, the guide device 1 of the present embodiment is used when drilling with the drill bit DB of the electric drill D. The guide device 1 aligns the drill bit DB with the central portion in the thickness direction TD when forming a hole in which an embedding member such as a latch member is embedded in a door plate B such as an open / close door or a sliding door, for example. Used. In addition, although perforation | punching object of the guide apparatus 1 is door-plate B, such as an opening / closing door and a sliding door, in this embodiment, perforation | boring object will not be specifically limited if it is a plate-shaped member which has predetermined thickness.

  The electric drill D is a drill driver that rotates the drill bit DB around the drill axis Ax1. The power drill D has a connecting portion D1 to which the drill bit DB is connected. The drill bit DB has a proximal end (shank) DB1 connected to the connection portion D1 and a cutting edge DB2 of the drill bit DB. The base end portion DB1 of the drill bit DB is connected to the connection portion D1 of the electric drill D, and the drill bit DB rotates around the drill axis AX1 so that the tip DB3 of the drill bit DB (see FIG. 2) The end face B1 is perforated. In the present specification, the base end DB1 of the drill bit DB refers to the entire end side of the drill bit DB where the cutting edge DB2 is not formed, and refers to only the portion connected to the connection D1 of the electric drill D. It is not a thing. The shapes and structures of the electric drill D and the drill bit DB are not particularly limited, and known electric drills and drill bits can be used.

  As shown in FIGS. 1 and 2, the guide device 1 includes an attaching portion 2, a guiding portion 3, a guided portion 4, and an engaging portion 5.

  The attachment portion 2 is a portion to which the base end portion DB1 of the drill bit DB is attached. The mounting portion 2 holds the drill bit DB so that the drill bit DB mounted to the mounting portion 2 can be rotated by the electric drill D. The structure of the mounting portion 2 is not limited as long as the drill bit DB can be rotatably held. In the present embodiment, as shown in FIG. 3, the mounting portion 2 is rotatable around the drill axis Ax 1 with respect to the bearing portion 21 and the bearing portion 21, and the proximal end DB 1 of the drill bit DB can be inserted. And a cylindrical member 22. In the present embodiment, the mounting portion 2 is provided on a first base member BS described later.

  The bearing portion 21 has a bearing (not shown). In the present embodiment, the bearing portion 21 is provided in a recess formed in the first base member BS. The bearing portion 21 has an insertion hole 21a in which the cylindrical member 22 is inserted in a direction in which the drill axis Ax1 extends (hereinafter, referred to as an axial direction). The bearing of the bearing portion 21 is connected to the cylindrical member 22 inserted into the insertion hole 21a.

  The cylindrical member 22 is formed in a hollow cylindrical shape in which both ends in the axial direction are open, and as shown in FIG. 3, the proximal end DB1 of the drill bit DB is inserted. The axial length of the cylindrical member 22 is set so that the portion of the base end portion DB1 of the drill bit DB inserted into the connection portion D1 of the electric drill D is exposed from the cylindrical member 22.

  The cylindrical member 22 is rotatably provided at the mounting portion 2. The cylindrical member 22 is connected to the bearing 21 so as not to move in the axial direction. The cylindrical member 22 is connected to the base end portion DB1 of the drill bit DB, and is configured such that when the drill bit DB is rotated by the electric drill D, the cylindrical member 22 rotates with the drill bit DB around the drill axis Ax1. There is.

  In the present embodiment, as shown in FIG. 3 and FIG. 4A, the cylindrical member 22 is axially connected to the screwing portion 221 provided on one end side of the cylindrical member 22 and the screwing portion 221. It is adjacent and has the rotation part 222 connected to the bearing part 21, and the rotation prevention part 223 provided in the other end side of the cylindrical member 22. As shown in FIG.

  The rotating portion 222 is formed in a substantially cylindrical shape, and is joined to the bearing of the bearing portion 21. The screwing portion 221 joins the cylindrical member 22 and the drill bit DB, as shown in FIG. As shown in FIG. 3, when the fastening member N such as a nut member is screwed into the screwing portion 221, the cylindrical member 22 and the drill bit DB integrally rotate.

  In the present embodiment, as shown in FIG. 4A, the screwing portion 221 has at least one slit 221a extending in the axial direction and an external thread portion 221b at one end side in the axial direction. . In the present embodiment, the fastening member N is fastened to the male screw portion 221 b of the cylindrical member 22, whereby the drill bit DB is attached to the attachment portion 2.

  The male screw portion 221 b is formed on the outer periphery of the screwing portion 221. The female screw part formed in the fastening member N is screwed into the male screw part 221b (see FIG. 3). Slit 221a is formed in the screwing portion 221 along the axial direction, and when the fastening member N is screwed to the male screw portion 221b of the screwing portion 221, the diameter of the screwing portion 221 is narrowed. It is done. Therefore, when the fastening member N is screwed into the screwing portion 221, the distance between the slits 221a is narrowed, and the proximal end DB1 of the inserted drill bit DB is pressed from the outer peripheral side. Thereby, the drill bit DB is fixed to the cylindrical member 22.

  Further, in the present embodiment, the cylindrical member 22 has, on the other end side in the axial direction, a rotation preventing portion 223 capable of engaging with a predetermined tool T (see FIG. 4B) such as a spanner. As shown in FIG. 4 (b), when the fastening member N is screwed on or released from the screwing, the detent portion 223 is gripped by the tool T. Thereby, the drill bit DB can be easily attached and detached from the attachment portion 2. Therefore, for example, when changing the diameter of cutting edge DB2 of drill bit DB by the size of the metal fitting attached to door plate B, the replacement work of drill bit DB becomes easy. Further, in the present embodiment, as shown in FIGS. 1 and 3, the base end DB1 of the drill bit DB penetrates the cylindrical member 22 and is directly connected to the connection D1 of the electric drill D. It is not necessary to provide the mounting portion 2 with a member (a member having the same shape as the base end portion DB1 of the drill bit DB) for connecting to the connection portion D1 of the electric drill D. Also, the set of the existing drill bit DB and the electric drill D can be used as it is for the guide device 1, which is very economical. For example, when the mounting portion 2 is provided with a member (a member having the same shape as the base end portion DB1 of the drill bit DB) for connecting to the connection portion D1 of the above-described power drill D, the drill bit DB and the power drill If the set of D changes, the same guide device can not cope. However, in the present embodiment, since the drill bit DB penetrates the cylindrical member 22, even if the set of the drill bit DB and the electric drill D changes, the same guide device 1 can be used.

  In the present embodiment, two slits 221 a are provided in the circumferential direction, but the number of slits 221 a may be one or more. Further, in the present embodiment, the fastening member N is a nut, but the fastening member N is not limited to the nut. Further, in the present embodiment, a locking nut N2 is provided adjacent to the fastening member N in the axial direction.

  On the other end side of the cylindrical member 22, as shown in FIG. 4B, flat end surfaces parallel to each other are formed on the outer periphery, and the rotation preventing portion 223 is stopped by a tool T such as a spanner. . However, the shape and the structure of the rotation preventing portion 223 are other shapes such as a hexagonal shape as long as the cylindrical member 22 can be prevented from rotating about the axis by a predetermined tool when the fastening member N is fastened. May be

  The guide part 3 is a site | part which the to-be-guided part 4 is guided which extends along the direction substantially parallel to drill axis Ax1 of drill bit DB, as FIG. 1 and FIG. 2 shows. In the present embodiment, the guide portion 3 extends from the first base member BS toward the engaging portion 5 substantially parallel to the drill axis Ax1, as shown in FIGS. 1 and 2. The guide part 3 is shown as a rod-shaped member parallel to each other.

  The guided portion 4 relatively moves along the guiding portion 3 as the door plate B is drilled by the rotation of the drill bit DB. Here, the relative movement means relative movement between the guided portion 4 and the guiding portion 3, and the guiding portion 3 may move relative to the guided portion 4. You may move with respect to the guide part 3, and both the guide part 3 and the to-be-guided part 4 may move. The guided portion 4 is movably attached to the guiding portion 3. The guided portion 4 is slidably attached to the rod-shaped guiding portion 3 and moves in parallel with the drill axis Ax1. In the present embodiment, the guided portion 4 is provided on the second base member BS2 on the engaging portion 5 side, and the second base member BS2 is configured to move relative to the guiding portion 3. In addition, the to-be-guided part 4 may be provided in the 1st base member BS side, and it may be comprised so that the 1st base member BS may interlock | cooperate with the attachment part 2, and may move.

  The to-be-guided part 4 has the through-hole 4a (refer FIG. 1 and FIG. 2) which can penetrate the cylindrical rod-shaped guide part 3 inside. In the present embodiment, the guided portions 4 are provided in a pair on the second base member BS2, and the pair of guiding portions 3 stably move in the axial direction by moving along the pair of guided portions 4 . More specifically, when the drill bit DB and the cylindrical member 22 are rotated around the drill axis Ax1 by the electric drill D and the door plate B is drilled, the electric drill D, the drill bit DB, the first base member BS and The guide portion 3 moves with respect to the second base member BS2 in a direction in which the door plate B is bored in the axial direction (hereinafter, referred to as a drilling direction). At this time, the guiding portion 3 is guided by the guided portion 4 so that the first base member BS is less likely to wobble, and it is possible to drill straight.

  In addition, the guide part 3 and the to-be-guided part 4 are not limited to the aspect shown in figure. In the present embodiment, the guide portion 3 is configured to move relative to the second base member BS2, but the guide portion 3 is configured to move relative to the first base member BS. Good. Specifically, the guide portion 3 is axially movably attached to the through hole H (see FIG. 3) through which the guide portion 3 of the first base member BS is inserted, and the guide portion is attached to the second base member BS2 One end of 3 may be fixed. Also in this case, when the electric drill D is driven, the same operation as the above-described operation can be performed. Further, the guide portion may be, for example, a guide groove provided in a casing in which the drill bit DB is accommodated, and the guided portion may be a protrusion engaged with the guide groove. In addition, the guide portion may be a hollow cylindrical body, and the guided portion may be a member that moves inside the hollow cylindrical body. In the present embodiment, the guided portion 4 and the engaging portion 5 are provided on the second base member BS2 and are integrally formed with the guided portion 4 and the engaging portion 5. The engaging portion 5 may be configured separately.

  Further, in the present embodiment, as shown in FIGS. 1 and 2, the guide portion 3 is movable along the extending direction of the guide portion 3, and at a predetermined position in the extending direction of the guide portion 3. The movable member 6 which can be held is provided. The moving member 6 includes a moving member main body 61 movably attached to the guide 3 and a fixing member 62 fixable to the guide 3 at a predetermined position. The shape and structure of the moving member main body 61 are appropriately changed in accordance with the shape and structure of the guide portion 3. In the present embodiment, the moving member main body 61 is an annular member that moves in the axial direction on the outer periphery of the rod-shaped guide portion 3. The fixing member 62 fixes the moving member main body 61 moved to the predetermined position at the predetermined position. The shape and structure of the fixing member 62 are not particularly limited as long as the moving member main body 61 can be fixed. In the present embodiment, the fixing member 62 is a screw member that presses the outer periphery of the moving member main body 61 to suppress the movement of the moving member main body 61. In the present embodiment, as shown in FIG. 1 and FIG. 2, the moving members 6 are respectively provided to the pair of guide portions 3.

  The movement of the drill bit DB is restricted by the contact of the guided portion 4 with the moving member 6. The movement member 6 restricts the relative movement of the guiding portion 3 with respect to the guided portion 4 so that the tip end DB3 of the drill bit DB protrudes in the drilling direction beyond the abutting portion 51 of the engaging portion 5 described later. Can be regulated. In this case, after the drill bit DB is connected to the guide device 1, the guide portion 3 is restricted from sliding relative to the guided portion 4 (second base member BS2), so the cutting edge of the drill bit DB Protruding beyond the contact portion 51 can prevent the worker from being injured. Specifically, the lower guide of FIG. 1 is mounted in a state in which the drill bit DB is attached to the mounting portion 2 and the tip DB3 of the drill bit DB does not exceed the contact portion 51 (state shown in FIGS. 1 and 2). The moving member 6 moving along the portion 3 is brought into contact with or close to the guided portion 4 (see a two-dot chain line in FIG. 1). The movable member 6 is fixed to the guide portion 3 in the lower guide portion 3 shown in FIG. 1 to a position indicated by a two-dot chain line, and the guide portion 3 is a guided portion 4 (second base member BS2) When moving in the direction of perforation, the moving member 6 abuts on the guided portion 4 in the axial direction. Therefore, the drill bit DB is restricted from moving in the drilling direction from the state shown in FIG. Therefore, the moving member 6 serves as a stopper when the power drill D is not in use, and it is possible to prevent injury to the worker. In addition, what is necessary is just to move the movement member 6 to the position shown by the continuous line along the lower guide part 3 of FIG. 1 when using the electric drill D.

  In addition, the moving member 6 restricts the moving amount of the relative movement of the guiding portion 3 with respect to the guided portion 4 to a predetermined range, so that the projecting amount from the abutting portion 51 in the drilling direction of the tip DB 3 of the drill bit DB. Can be regulated to a predetermined amount to adjust the drilling depth by the drill bit DB. In this case, when drilling is performed by the drill bit DB of the electric drill D, the guide portion 3 (first base member BS) also moves in the drilling direction with respect to the guided portion 4 along with the movement of the drill bit DB in the drilling direction. . After the guide portion 3 moves by a predetermined amount in the drilling direction together with the drill bit DB, the moving member 6 provided on the guide portion 3 abuts on the axial end surface of the guided portion 4. Thereby, when the drill bit DB drills from the position shown in FIG. 1, after drilling to a predetermined depth, the guided portion 4 and the moving member 6 abut each other, and the guiding portion 3 (first base member BS And drill bit DB do not move further in the drilling direction. Therefore, the distance between the movable member 6 provided in the upper guide portion 3 and the guided portion 4 in FIG. 1 is the drilling depth, and even an unskilled worker has an end face of the door plate B with a predetermined drilling depth. You can make a hole in the In addition, since the moving member 6 can move relative to the guide portion 3, it is shown by a two-dot chain line from the position shown by the solid line in the upper guide portion 3 of FIG. By adjusting the position of the moving member 6 to the position, the drilling depth by the drill bit DB can be easily adjusted. For example, when moving member 6 is moved from the position shown by a solid line in FIG. 1 to the position shown by a two-dot chain line, the moving member 6 and end face B1 of door plate B can be deeply drilled.

  The engaging portion 5 engages with the door plate B when the door plate B is pierced, as shown in FIG. Specifically, the engaging portion 5 engages with the end surface B1 of the door plate B and one surface B2 and the other surface B3 extending perpendicularly to the end surface B1. Thereby, at the time of drilling of the door plate B by the electric drill D, the electric drill D is stabilized relative to the door plate B via the guide device 1.

  The engaging part 5 has the contact part 51, and the 1st clamping part 52 and the 2nd clamping part 53, as FIG. 1 and FIG. 2 show. Further, in the present embodiment, the engaging portion 5 has a gripping portion 54 which is gripped when the guide device 1 is engaged with the door plate B or when the door plate B is pierced by the electric drill D. In the present embodiment, the engaging portion 5 is provided on the second base member BS2. One end of the guide portion 3 is attached to the second base member BS2, and the drill bit DB is configured to move relative to the second base member BS2 (engagement portion 5).

  The contact portion 51 contacts the end surface B1 of the door plate B. In the present embodiment, the contact portion 51 is provided on the second base member BS2, has a flat surface that contacts the end surface B1 of the door plate 51, and is a hole for passing the drill bit DB with movement of the drill bit DB. It has a portion 51a (see FIG. 2).

  The first holding portion 52 and the second holding portion 53 are provided on the second base member BS2 and provided on the side of the contact portion 51 in the drilling direction. The first holding portion 52 and the second holding portion 53 are provided apart from each other at a predetermined interval so that the door plate B can be held in the thickness direction TD of the door plate B. Although a predetermined space | interval is not specifically limited, It is preferable to set it as the space | interval which can put any one of several types of door plates which differ in thickness between the 1st clamping part 52 and the 2nd clamping part 53. FIG. In addition, when the drill bit DB moves in the drilling direction, the first clamping unit 52 and the second clamping unit 53 allow the drill bit DB to pass between the first clamping unit 52 and the second clamping unit 53. Is located in

  The first holding unit 52 can be in contact with one surface B2. As shown in FIG. 1, FIG. 2 and FIG. 5, the first holding portion 52 has a contact surface 52a that can be in contact with one surface B2 of the door plate B, and is a first substantially parallel to the drill axis Ax1. It is configured to be swingable around an axis Ax2. More specifically, the first holding portion 52 has a swing plate P swinging around the first axis Ax2, and the contact surface 52a provided on the swing plate P swings, and the door plate B Make surface contact with one side B2. The shape and structure of the first holding portion 52 are not limited to the illustrated shape and structure as long as they can swing around the first axis Ax2 and abut on one surface B2 of the door plate B.

  The second holding portion 53 can abut on the other surface B3 and holds the door plate B together with the first holding portion 52 in the thickness direction TD. The second holding portion 53 has an abutting surface 53a that abuts on the other surface B3. The shape and structure of the second holding portion 53 are not particularly limited as long as the door plate B can be held in the thickness direction TD together with the first holding portion 52. Unlike the first clamping unit 52 in the present embodiment, the second clamping unit 53 is immovable, but the second clamping unit 53 may have a configuration similar to that of the first clamping unit 52.

  In the present embodiment, when the guide device 1 is rotated about the drill axis Ax1, the contact surface 52a of the first holding unit 52 abuts on one surface B2, and the second holding unit 53 contacts the other surface B3. At the same time, the drill axis Ax1 is aligned. Thereby, when the guide device 1 is rotated around the drill axis Ax1 in a state where the door plate B is sandwiched between the first holding portion 52 and the second holding portion 53, as shown in FIGS. 6 and 7, According to the thickness of the door plate B, the first holding unit 52 swings around the first axis Ax2, and each of the contact surface 52a of the first holding unit 52 and the contact surface 53a of the second holding unit 53 is It abuts on one side B2 of the door plate B and the other side B3. As a result, the guide device 1 engages with the door plate B and is stably held with respect to the door plate B, and the drill axis Ax1 is aligned with the central portion in the thickness direction TD of the door plate B. In this state, when the electric drill D is driven to rotate the drill bit DB aligned at the center in the thickness direction TD of the door plate B, a hole is formed at the center in the thickness direction TD of the door plate B. Can. Therefore, regardless of whether the worker is a skilled person or not, the hole can be easily formed by the drill bit DB in the central portion in the thickness direction TD of the door plate B.

  In the present embodiment, as shown in FIGS. 5 to 7, the second holding portion 53 is curved with a predetermined curvature about a second axis Ax3 substantially parallel to the drill axis Ax1, and the door plate B is It has a curved surface (contact surface 53a) in contact with the other surface B3. Further, as shown in FIG. 5, when viewed in the axial direction of the drill axis Ax1, the first axis Ax2 of the first holding portion 52, the second axis Ax3 of the second holding portion 53, and the drill axis Ax1 is aligned on a straight line, and the drill axis Ax1 is located at the center of the first axis Ax2 and the second axis Ax3. In this case, the tip end DB3 of the drill bit DB can be more accurately positioned at the center of the thickness direction TD of the door plate B.

  Further, in the present embodiment, when applying a rotational force around the drill axis Ax 1 to the guide device 1, the grip portion 54 is operated. By gripping the gripping portion 54 and rotating the guide device 1 around the drill axis Ax 1, the tip DB 3 of the drill bit DB can be aligned safely and easily. The shape and structure of the gripping portion 54 are not particularly limited as long as the guide device 1 can be rotated around the drill axis Ax1. In the present embodiment, the gripping portion 54 is illustrated as a rod-like member provided on the second base member BS, which extends in a direction perpendicular to the drill axis Ax1. The gripping portion 54 may be configured to be detachable from the guide device 1 or may be configured to be foldable.

Reference Signs List 1 guide device 2 mounting portion 21 bearing portion 21a insertion hole 22 cylindrical member 221 screwed portion 221a slit 221b male screw portion 222 rotating portion 223 rotation preventing portion 3 guiding portion 4 guided portion 4a through hole 5 engaging portion 51 abutting Part 51a Hole part 52 First sandwiching part 52a Contact surface 53 Second sandwiching part 53a Contact surface 54 Gripping part 6 Moving member 61 Moving member main body 62 Fixing member Ax1 Drill axis Ax2 First axis Ax3 Second axis B Door plate B1 End face B2 One side B3 The other side BS First base member BS2 Second base member D Motorized drill D1 connection DB drill bit DB1 base end DB2 cutting edge DB3 tip H through hole N fastening member N2 locking nut P rocking Plate T Tool TD Thickness Direction

Claims (7)

A guide device for an electric drill used in drilling an end face of a plate-like object to be drilled having a predetermined thickness, the guide device comprising:
An attachment to which the proximal end of the drill bit is attached;
A guide extending along a direction substantially parallel to a drill axis of the drill bit;
A guided portion that moves along the guiding portion along with the drilling of the drilling target by the rotation of the drill bit;
And an engaging portion engaged with the object to be drilled at the time of drilling the object to be drilled;
The engagement portion is
An abutting portion that abuts on the end surface to be punched;
In order to be able to sandwich the object to be drilled in the thickness direction of the object to be drilled, they are provided spaced apart from each other at a predetermined distance, and one surface and the other surface extending perpendicularly to the end face of the object to be drilled respectively A first holding portion and a second holding portion capable of abutting;
The first clamping unit and the second clamping unit are arranged such that the drill bit passes between the first clamping unit and the second clamping unit when the drill bit moves in the drilling direction. And
The first holding portion has a contact surface capable of coming into contact with one surface of the object to be drilled, and is configured to be swingable around a first axis substantially parallel to the drill axis,
When the guide device is rotated about the drill axis, the contact surface of the first holding unit abuts on the one surface, and the second holding unit abuts on the other surface. A guide device in which the axes are aligned. The second holding portion is curved at a predetermined curvature about a second axis substantially parallel to the drill axis, and has a curved surface that abuts on the other surface of the drilling target.
When viewed in the axial direction of the drill axis, the first axis of the first holding portion, the second axis of the second holding portion, and the drill axis are arranged in a straight line, and The guide device according to claim 1, wherein the mounting portion is provided such that the drill axis is positioned at a central portion of the first axis and the second axis. The guide unit includes a moving member that is movable along the extension direction of the guide unit and can be held at a predetermined position in the extension direction of the guide unit.
The guide device according to claim 1, wherein movement of the drill bit is restricted by the guided portion coming into contact with the moving member. The movement member controls the relative movement of the guiding portion with respect to the guided portion, thereby restricting the tip of the drill bit from projecting beyond the abutting portion in the drilling direction. Guide device described. The movement member regulates the movement amount of the relative movement of the guide portion relative to the guided portion within a predetermined range, thereby making the amount of protrusion of the tip of the drill bit from the contact portion in the drilling direction The guide device according to claim 3 or 4, wherein the depth of drilling by the drill bit can be adjusted in a regulated manner. The guide device according to any one of claims 1 to 4, wherein the guide device comprises a grip portion operated to apply a rotational force around the drill axis to the guide device. The mounting portion includes a bearing portion, and a cylindrical member which is rotatable around the drill axis with respect to the bearing portion and into which a proximal end portion of the drill bit can be inserted.
The cylindrical member has at least one slit extending in the axial direction on one end side in the axial direction and a male screw portion, and on the other end side in the axial direction, a detent portion engageable with a predetermined tool Have
The guide device according to any one of claims 1 to 5, wherein the drill bit can be attached to the attachment portion by fastening a fastening member to an external thread portion of the cylindrical member.

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