WO2017109938A1 - Outil d'assistance à la fixation magnétique d'accessoires d'attache et tournevis électrique - Google Patents

Outil d'assistance à la fixation magnétique d'accessoires d'attache et tournevis électrique Download PDF

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Publication number
WO2017109938A1
WO2017109938A1 PCT/JP2015/086227 JP2015086227W WO2017109938A1 WO 2017109938 A1 WO2017109938 A1 WO 2017109938A1 JP 2015086227 W JP2015086227 W JP 2015086227W WO 2017109938 A1 WO2017109938 A1 WO 2017109938A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic attachment
driver bit
attachment aid
tip
Prior art date
Application number
PCT/JP2015/086227
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English (en)
Japanese (ja)
Inventor
秀雄 中庄谷
Original Assignee
光和管財株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 光和管財株式会社 filed Critical 光和管財株式会社
Priority to JP2016534741A priority Critical patent/JP6085740B1/ja
Priority to PCT/JP2015/086227 priority patent/WO2017109938A1/fr
Publication of WO2017109938A1 publication Critical patent/WO2017109938A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/12—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using magnetic means

Definitions

  • the present invention uses a magnetic attachment aid for fasteners, in which iron and stainless fasteners are adsorbed to the tip by inserting and removing a driver bit or the like, and using the magnetic attachment aids for the fasteners. It relates to a motorized driver.
  • Patent Document 1 As a conventional magnetic attachment aid for fasteners, there is, for example, one described in Patent Document 1 below.
  • a neodymium magnet is formed in the shape of two half rings, and a space is provided between the two magnets in a ring shape, and a driver bit is inserted into the central space (hollow through hole), The shaft portion is magnetized, and a rotary fixing tool such as a screw is adsorbed and held on the tip of the driver bit.
  • the above-mentioned document uses fasteners such as iron screws for attachment, and is strong enough to adsorb and hold fasteners such as stainless steel screws at the tip of the driver bit of the motorized driver. It is not possible to obtain a magnetic force.
  • fixing tools such as iron are rusted and corroded, so they are not suitable for outdoor buildings etc., and stainless steel screws are often used, and stainless steel screws It is desirable to develop a magnetic attachment aid that can be held by suction on the tip of a driver bit, as with iron screws.
  • the present invention has been proposed in consideration of such circumstances, and its object is to magnetically magnetize the tip of the driver bit so that the tip of the driver bit can be strongly magnetized and magnetically attached even with a stainless steel fastener. To provide aids.
  • the magnetic attachment aid for fasteners of the present invention is a magnetic attachment aid for fasteners used by inserting a driver bit, and a plurality of permanent magnets are hollow in the center
  • a magnetic attachment aid main body formed in a petal-like cylindrical body by joining end portions of the same polarity of adjacent permanent magnets in a bundle without gaps so that a through hole is formed, and magnetic attachment
  • a magnetic material reinforcing member made of a cylindrical ferromagnetic material attached to the front end side of the auxiliary tool main body and adapted to insert the driver bit is provided, and a plurality of permanent magnets are inserted into the hollow through holes.
  • the magnetization direction is defined so that the magnetic lines of force are directed toward the tip with an inclination angle with respect to the axis line of the driver bit to be passed, and the magnetic force reinforcing material is allowed to pass through.
  • a cushioning material may be interposed on the end face of each of the plurality of permanent magnets opposite to the hollow through hole.
  • the petaloid tubular body may have a regular n-gon shape.
  • the permanent magnet may be configured such that a chamfering joint surface is formed on adjacent side surfaces between the magnets.
  • an auxiliary permanent magnet may be attached to the outer periphery of the plurality of permanent magnets, in which the magnetic poles are aligned along the penetrating direction of the hollow through hole.
  • the fixture may be made of stainless steel screws or the like.
  • a socket member for an electric driver may be detachably attached to the driver bit.
  • the magnetic shield case may further include a magnetic shield case for housing at least a driver bit to which the magnetic attachment aid body is attached.
  • the magnetic shield case has a bottomed cylindrical body made of a magnetic material, and the bottomed cylindrical body The tip of the driver bit may be disposed on the inner bottom side, and the magnetic attachment aid main body may be covered with the side wall of the bottomed cylindrical body.
  • the magnetic attachment assisting tool for any one of the above-mentioned fasteners is mounted on a driver bit.
  • the shaft portion of the driver bit may be provided with a positioning portion for mounting the magnetic attachment aid for a fixing device at an appropriate position.
  • the magnetic attachment aid for fasteners of the present invention because of the above-described configuration, the leakage of the magnetic flux of the structure obtained by bundling the permanent magnets is almost eliminated, and the magnetic flux is transmitted to the hollow through hole into which the driver bit is inserted. It can be concentrated. Therefore, a large amount of magnetic lines of force can be collected at the tip of the driver bit inserted into the hollow through hole, and as a result, a fixing tool such as a stainless steel screw can be magnetically attached.
  • the driver bit can be magnetized in a simple and inexpensive manner. Moreover, since it becomes the above-mentioned structure, the leakage of the magnetic flux of the structure which bundled the permanent magnet will be almost nonexistent, and a magnetic flux can be concentrated to the hollow through-hole in which a driver bit is inserted. For this reason, a large amount of magnetic lines of force can be collected also at the tip of the driver bit inserted in the hollow through hole, and not only fasteners such as iron screws but also fasteners such as stainless steel screws can be magnetically attached.
  • (A) is a perspective view which shows the external appearance of the magnetic attachment aid main body which is a structural member of the magnetic attachment aid for fasteners which concerns on one Embodiment of this invention, (b) is the side view.
  • (A) is a cross-sectional view corresponding to the line BB of FIG. 1 (b)
  • (b) is a magnetic attachment aid for the fixture of FIG. 1 (a) corresponding to the line CC of FIG. 2 (a) It is sectional drawing of a tool.
  • (A) is a perspective view which shows the external appearance of the magnetic reinforcing material which is a structural member of the magnetic attachment assistance tool for fasteners which concerns on one Embodiment of this invention, (b) is the same side view.
  • (A) is a longitudinal cross-sectional view of the socket member used together with a magnetic attachment assistance tool main body
  • (b) is a longitudinal cross-sectional view which shows the use aspect.
  • (A) is a longitudinal cross-sectional view of a magnetic shielding case
  • (b) is the longitudinal cross-sectional view which showed the usage aspect of a magnetic shielding case.
  • (A) to (e) are schematic views showing arrangement examples of permanent magnets of a magnetic attachment aid for fasteners.
  • (A) is a front view of an electric driver according to an embodiment of the present invention
  • (b) is a partial front view of an electric driver according to another embodiment
  • (c) is an electric type according to still another embodiment It is a partial front view of a driver.
  • the magnetic attachment aid 1 for fixtures (hereinafter referred to as the magnetic attachment aid 1) is an aid used by inserting the driver bit 40 into it. As shown in FIG. 4 etc., the magnetic attachment aid 1 has the same polarity end portions of the adjacent permanent magnets 21 so that the hollow through holes 13 are formed at the centers of the plurality of permanent magnets 21.
  • the driver consists of a magnetic attachment aid main body A formed in a petaloid cylindrical body joined in a bundle without gaps, and a cylindrical ferromagnetic material attached to the tip side of the magnetic attachment aid main body A, the driver And a magnetic reinforcing member 50 adapted to be fitted with the bit 40.
  • the magnetization directions of the plurality of permanent magnets 21 are defined so that the lines of magnetic force are directed toward the tip at an inclination angle with respect to the axis of the driver bit 40 inserted into the hollow through hole 13 so as to pass through the magnetic force reinforcing member 50. It has become.
  • the relationship between the permanent magnet 21 and the hollow through hole 13 may be as shown in FIG. 9 other than that shown in FIG. 2 (a), and the hollow through hole 13 at the center is preferably a regular n-gon.
  • the present invention is not limited to such a shape.
  • the hollow through hole 13 in this example is a regular hexagonal cross section corresponding to the driver bit 40 having a regular hexagonal cross section.
  • the magnetic attachment aid main body A which is a component of the magnetic attachment aid 1 will be described more specifically.
  • the magnetic attachment aid main body A shown in FIG. 1 has a cylindrical shape having a hollow through hole 13 at the center (see FIG. 1 (a)).
  • the hollow through hole 13 in the illustrated example has a regular hexagonal column shape and is disposed at the center position of the circle.
  • the magnetic attachment aid main body A includes a main body case 10, a permanent magnet 21, a cushion material 22 made of an elastic material such as rubber, and a yoke 15.
  • the permanent magnet 21, the cushioning material 22 and the yoke 15 are disposed along the penetrating direction of the hollow through hole 13 as seen in FIG. 2.
  • the yoke 15 may not be provided.
  • the main body case 10 is made of a nonmagnetic resin that generally forms the cylindrical shape of the magnetic attachment aid main body A, has an opening at the upper part, and has a hexagonal opening for forming the hollow through hole 13 at the lower part. It comprises the main body 11 and the lid 12 closing the upper opening.
  • each permanent magnet 21 is filled in the main body 11 of the main body case 10 so that six identical shapes maintain the shape of the petal.
  • the cross-sectional shape of each permanent magnet 21 is, as shown in FIG. 2A, a hexagonal shape formed by combining a rectangle and an isosceles trapezoid. Further, the arrangement of the polarities is also the same among the permanent magnets 21 and in the example of this example, the hollow through holes 13 side is arranged so as to be the N pole, but the S pole and the N pole may be reversed. .
  • the six permanent magnets 21 do not form a gap between the permanent magnets 21 provided adjacent to each other, and in the example in the figure, the legs of the isosceles trapezoidal leg are in contact with each other, that is, both sides corresponding to the legs are As the chamfer bonding surface 25, they are arranged in a petal shape so as to be in close contact with each other.
  • the cylindrical body can be formed into a regular n-gon. If the cylindrical body is a regular n-gon, the driver bit 40 can be inserted without any gap. In addition, since the adjacent permanent magnets 21 are in close contact with each other at the chamfered joint surfaces, it is possible to prevent magnetic leakage.
  • a cushioning material 22 be disposed on an end face of each of the plurality of permanent magnets 21 opposite to the hollow through hole 13, and the cushioning material 22 is inserted to be inserted into the hollow through hole 13. Even if the bit diameter is somewhat large or small, the error is absorbed. Although this cushioning material 22 may cause displacement between the chamfering surfaces 25 of the adjacent permanent magnets 21, there is no possibility that a gap will occur because the surfaces are joined.
  • the permanent magnet 21 In the main body 11 of the main body case 10, six permanent magnets 21 are arranged such that the same magnetic poles face each other, so that repulsive forces of the same polarity are generated. Therefore, it is desirable that the permanent magnet 21 be restrained by filling the resin material 16 in the main body 11 to such an extent that slight movement by the cushion material 22 is permitted and the shape of the petal is not broken.
  • the resin material 16 may not be filled as long as the six permanent magnets 21 are accommodated in the main body 11 and fixed to the above degree.
  • the magnetic force reinforcing material 50 which is another component of the magnetic attachment aid 1, is a cylindrical body having a tapered portion 52 at its tip, and is a ferromagnetic member. It is formed.
  • the magnetic force reinforcing member 50 is used by inserting the driver bit 40. Therefore, the bit insertion hole 51 provided at the center has substantially the same diameter as the hollow through hole 13 of the magnetic attachment aid main body A. On the other hand, it is desirable that the outer diameter of the magnetic force reinforcing member 50 is smaller than the outer diameter of the magnetic attachment assisting tool main body A as shown in the example of the present embodiment.
  • the magnetic attachment aid main body A which does not have the yoke 15 (refer FIG. 1 grade
  • the plurality of permanent magnets 21 constituting the magnetic attachment assisting body A are directed with respect to the axis 43 (see FIG. 3) of the driver bit 40 inserted into the hollow through hole 13 as indicated by arrows in the direction of the respective magnetizations. It is made to incline and magnetize toward the tip 41. Furthermore, a magnetic reinforcing material 50 in which the driver bit 40 is inserted is further disposed adjacent to the tip end side of the magnetic attachment aid main body A. The magnetic reinforcing material 50 can be magnetically attached to the driver bit 40 by the magnetic force of the magnetic attachment aid main body A. Therefore, once the magnetic reinforcing material 50 is attached to the driver bit 40, there is no risk of the magnetic reinforcing material 50 slipping off during use.
  • fixing tools such as stainless steel screws can not be magnetized and can not be magnetically attached.
  • austenitic (SUS304) ones are usually nonmagnetic materials in normal times, It is known that when it is deformed by applying a large load, it can be transformed to martensite and magnetized.
  • the inventor of the present invention has already made such a transformation in the process of forming an insertion groove into which the tip 41 of the driver bit 40 is fitted in its head, such as stainless steel screws of SUS 304 used in ordinary buildings. The present invention has been reached by knowing that it has occurred.
  • a driver bit 40 made of a ferromagnetic material is formed in the hollow through hole 13 of the magnetic attachment aid A and the bit insertion hole 51 of the magnetic force aid 50.
  • the driver bit 40 is magnetized by the magnetic attachment aid A, and the bit insertion groove 48 formed in the head 46 of the stainless steel fixture 45 such as a stainless steel screw is placed on the tip 41 of the driver bit 40 When brought close, the stainless steel screw 45 can be adsorbed.
  • Reference numeral 47 in FIG. 4 denotes a shaft portion of the screw 45.
  • FIG. 4 in the state where the driver bit 40 is inserted into the two members of the magnetic attachment aid 1, a magnetic field is formed to which magnetic lines of force 32 are emitted as illustrated by a two-dot chain line.
  • FIGS. 4 and 5 magnetic lines of force 31 along the axis connecting the magnetic poles are shown separately from the magnetic lines of force 32.
  • the magnetic flux of the six permanent magnets 21 of the magnetic attachment aid main body A concentrates on the hollow through hole 13.
  • the magnetic flux entering the driver bit 40 further enters the tip end side of the magnetic attachment aid main body A toward the tip and the magnetic flux loop enters the proximal end side and enters the rear end of the magnetic attachment aid main body.
  • the tip 41 can be made to exert a strong magnetic force to magnetically attach not only iron but also stainless steel screws. it can.
  • the magnetic force assisting material 50 acts to strengthen the magnetic force.
  • the action of the magnetic force auxiliary member 50 will be described later along with the description of FIG.
  • a plurality of permanent magnets 21 are joined in a bundle without gaps, a hollow through hole 13 is formed at the center, and a petaloid cylindrical body is formed. Since the magnetic flux radiated from the permanent magnet is concentrated in the hollow through hole to form a strong magnetic field, the driver bit 40 is magnetized and a stainless steel fixture 45 such as a stainless steel screw is attracted to the tip 41 of the driver bit 40 It can be done.
  • the inventor of the present invention biases the magnetic flux entering the driver bit 40 from the permanent magnet 21 so that the magnetic flux directed to the tip 41 side is larger than the base end 42 side of the driver bit 40 (see FIG. 4 and FIG. It is known that the magnetic flux reinforcements 50 are attached adjacent to each other to obtain a high magnetic flux density at the tip 41 of the driver bit 40.
  • the magnetic flux is biased to the tip 41 side of the driver bit 40 in such a manner that the respective magnetization directions of the permanent magnets 21 constituting the petaloid cylindrical body are the tip 41 of the driver bit 40 inserted into the hollow portion through hole 13.
  • Such a structure can be easily implemented by giving an orientation of the magnetization of the permanent magnet 21 to the axis 43 of the driver bit 40 with the side facing to the side.
  • FIG. 6 is a diagram for explaining the direction of magnetization of the permanent magnet 21. As shown in FIG. In this figure, the direction of the magnetization of the permanent magnet 21 is schematically shown magnetized with an inclination of W with respect to the axis 43 of the driver bit 40.
  • the direction of magnetization of the permanent magnet 21 is set to an angle W inclined with respect to the axis 43 of the driver bit 40.
  • the permanent magnet 21 has S pole and N The boundary with the pole is not parallel to the direction of the hollow through hole 13 and the bit insertion hole 51, and the magnetic pole branch point 35 on the tip 41 side of the driver bit 40 is inclined away from the surface of the driver bit 40 .
  • the magnetic flux radiated from the permanent magnet 21 is larger at the tip end 41 side of the driver bit 40 than at the base end 42 side. Therefore, by changing the inclination angle W, the optimum value that can obtain a larger flux density at the tip end 41 side Can be explored.
  • the magnetic lines of force from the N pole on the tip side of the holding aid main body A to the tip are induced by the magnetic reinforcements 50 provided adjacent to each other and pass through the magnetic reinforcements 50 so that the magnetic lines of the driver bit 40 are in the other direction. I will not turn to. Therefore, the magnetic flux density at the tip 41 of the driver bit 40 becomes sufficiently large.
  • the magnetic force inducing action is not generated by the magnetic force reinforcing member 50, so the magnetic force lines 31 going from the N pole on the tip side of the magnetic attachment aid A to the tip 41 are shown in FIG. It tries to return to the S pole as shown by the broken line at 6. Therefore, the magnetic flux density at the tip 41 of the driver bit 40 is smaller than that provided with the magnetic force reinforcing member 50.
  • the magnitude of the magnetic flux at the tip 41 of the driver bit 40 is determined by the boundary point between the S pole and the N pole on the tip 41 side of the driver bit 40 (magnetic pole branch point 35 According to the knowledge, it is known that the length L is approximately determined by the length of the distance L to the end face of the permanent magnet 21 on the N pole side.
  • the magnetic pole branch point 35 is far from the surface of the driver bit 40 and the magnetic force induction action of the magnetic force reinforcing material 50 can be made to increase the magnetic flux density at the tip 41 of the driver bit 40.
  • the magnetic attachment assisting body A having the configuration shown in FIG. 6, many magnetic lines of force 31 having an inclination angle W toward the tip direction with respect to the axial line 43 of the driver bit 40 are emitted.
  • the magnetic force can be intensified by the tip 41 of the driver bit 40.
  • the direction of magnetization of the permanent magnet 21 is changed by the inclination angle W to 20 degrees, 25 degrees, 30 degrees, 45 degrees, and 90 degrees with respect to the axis line 43 of the driver bit 40 by the tip 41 of the driver bit 40 Tests were conducted to measure the magnetic force of A neodymium magnet of a rare earth magnet having a high residual magnetic flux density was used as the permanent magnet 21. However, each of them is magnetized with a magnetic flux density of 20000 G, and six magnets with a residual magnetic density of 5000 G are obtained. What was comprised as a petaloid cylindrical body of a face was used.
  • the magnetic force at the tip 41 becomes stronger as the protrusion length from the permanent magnet 21 to the tip 41 of the driver bit 40 becomes shorter, the protrusion to such an extent that the magnetic force supplement 50 can be attached It is desirable to be long.
  • the inventor combined the magnetic attachment assisting tool main body A with a total length of 40 mm and the magnetic force aiding member 50 with a total length of 10 mm, and made the above projecting length 16 mm and tested for the five types of inclination angles W.
  • a large magnetic flux density was obtained at a temperature of 30 degrees. Specifically, when the inclination angle W is 30 degrees, the magnetic flux density of the tip 41 of the driver bit 40 is 8500 gausses or more. Even when the inclination angle W was 20 degrees or 25 degrees, a magnetic flux density of 8000 gauss or more was measured. Further, in the case where the inclination angle W was 45 degrees and 90 degrees, the magnetic flux density was less than 7,000 gauss.
  • the stainless steel fixture 45 is magnetically attached with the driver bit 40 to which the magnetic attachment aid 1 is attached. be able to.
  • the magnetic force assisting material 50 is 10 mm, it is preferable that the projection length from the permanent magnet 21 to the tip 41 of the driver bit 40 be 14 to 16 mm. Further, in consideration of the ease of operation, it is desirable that the tip 41 is not hidden by the magnetic attachment aid 1 when viewed from above at the tip 41 of the driver bit 40.
  • the magnetic force assisting member 50 has a diameter smaller than that of the magnetic attachment assisting tool body A, and the tapered portion 52 is provided at the front end. There is almost no possibility that the view will be blocked. The tapered portion 52 also contributes to the reduction of the leakage of the magnetic force lines passing through the magnetic force assisting member 50. If the corners are provided, the lines of magnetic force are likely to leak into the air, so that forming the tapered portion 52 can prevent that.
  • a magnetic attachment aid main body A in which six neodymium magnets are used as the permanent magnet 21 and which are bundled in a petal-like manner without gaps and a magnetic force aid 50 formed of a ferromagnetic material It has been confirmed that the tip 41 of the driver bit 40 can be strongly magnetized by using the attachment aid 1.
  • an auxiliary permanent magnet 23 in which the magnetic poles are aligned along the direction of the through hole of the hollow through hole 13 is attached to the outer periphery of the plurality of permanent magnets 21 constituting the petaloid cylindrical body.
  • the magnetic poles of the plurality of auxiliary permanent magnets 23 are disposed along the penetrating direction of the hollow through hole 13 and the N pole is disposed on the tip 41 side of the driver bit 40 as illustrated.
  • the auxiliary permanent magnet 23 is disposed on the
  • the magnetic pole branch point 35 on the tip 41 side of the driver bit 40 can be formed at a further distant position (the distance L can be increased). Together with the action of the magnetic force assisting member 50, a stronger magnetic force is generated on the tip 41 side of the driver bit 40.
  • the magnetic force auxiliary member 50 is not used, and instead, a socket member 68 for the motorized driver 70 (see FIG. 11) is attached and used.
  • the socket member 68 is formed of a ferromagnetic material and has a hollow hole 68a, and the tip end 41 of the driver bit 40 can be inserted from one end 68b, and the other end 68c is used for replacement (socket member 68 And a member that can be fitted with a replacement bit (not shown).
  • the socket member 68 may be a commercially available one, and although its structure is not shown, the chuck cylinder 68 d is moved in the direction of the arrow in FIG.
  • the socket member 68 can be attracted by the magnetic force, so that the driver is attached to one end 68b side of the tip 41 of the driver bit 40 to be inserted. It is not necessary to have a structure such as a chuck cylinder 68 d for clamping the bit 40.
  • the socket member 68 is attached instead of the magnetic force assisting member 50, it can be used as another type of driver. Also, the socket member 68 acts in the same manner as the magnetic force assisting member 50 so that the magnetic force lines of the magnetic attachment assisting body A can be effectively concentrated on the tip 41.
  • this magnetic attachment aid 1 is provided with a magnetic shield case 60 in addition to the magnetic attachment aid main body A and the magnetic force aid 50 shown in FIGS.
  • the magnetic shield case 60 shields the magnetic attachment assisting tool main body A so as not to leak the magnetism, includes a bottomed cylindrical body 61 made of a ferromagnetic material, and at least a driver attached with the magnetic attachment assisting tool main body A. It can accommodate the bit 40.
  • the magnetic shield case 60 shown in the present embodiment has bottomed cylindrical bodies 61 and 63 made of a pair of magnetic members, and one of the bottomed cylindrical bodies 61 (main body)
  • the opening 63a of the other bottomed cylindrical body 63 (lid) can be externally fitted to the opening 61a.
  • Each bottomed cylindrical body 61, 63 is made of a ferromagnetic material, and each inner bottom 61b, 63b is provided with a cushioned bit end protection material 62, 64 made of a nonmagnetic material.
  • this magnetic shield case 40 inserts the tip end side of the driver bit 40 to which the magnetic attachment assisting tool main body A is attached to the small-diameter bottomed cylindrical body 61 (main body). Then, a large diameter bottomed cylindrical body 63 (lid) is placed on the rear end side to cover the entire driver bit 40.
  • the driver bit 40 to which the magnetic force auxiliary member 50 is further attached may be accommodated.
  • the magnetic attachment assisting tool main body A having a diameter larger than that in FIG. 9B and having a size that can not be accommodated in the bottomed cylindrical body 61 (main body).
  • the magnetic attachment aid main body A can also be used to protect the magnetic attachment aid main body A with a bottomed cylindrical body 63 (lid).
  • the magnetic shield case 60 of the present embodiment has the bottomed cylindrical bodies 61 and 63 made of a ferromagnetic material, and the inner bottom 61b and 63b of the bottomed cylindrical bodies 61 and 63 has the tip of the driver bit 40
  • the magnetic attachment aid main body A is covered with the side walls 61c and 63c of the bottomed cylindrical bodies 61 and 63, but it is used by being attached to the motorized driver 70 (see FIG. 11).
  • the magnetic shield case 60 may be configured of only one of the two bottomed cylindrical bodies 61 and 63.
  • hollow through holes 13 having a cross section other than a hexagonal shape.
  • the hollow through hole 13 is circular, in FIG. 10C is square, in FIG. 10D is pentagonal, and in FIG. 10E is rectangular.
  • FIG. 10 (a) As permanent magnet 21, three permanent magnets 21 having the same arc shape are used in FIG. 10 (a), and four permanent magnets 21 having the same arc shape are used in FIG. 10 (b).
  • 10 (c) (d) (e) similarly to the permanent magnet 21 shown in FIG. 2 (a), a hexagonal cross section having a combination of a rectangle and an isosceles trapezoid is used. .
  • 10 (c) and (d) the plurality of permanent magnets 21 have the same shape, but in FIG. 10 (e), two types of permanent magnets 21 are used so as to correspond to the side length of the rectangle. It is done.
  • FIG. 11 is an explanatory view of a motor-driven driver 70 provided with the magnetic attachment assisting tool 1 and the driver bit 40 inserted in and removed from the magnetic attachment assisting tool 1.
  • the following motorized driver 70 can be applied to either a drill driver or an impact driver.
  • the motor-driven driver 70 includes a driver main body 71, a driver bit 40, and a magnetic attachment aid 1 to be attached to and detached from the driver bit 40.
  • the driver bit 40 may be detachably attached to or integrated with the chuck portion 74 of the driver main body 71.
  • the magnetic attachment aid 1 comprises a magnetic attachment aid body A and a magnetic force aid 50.
  • the motorized driver 70 is configured to perform a screw tightening operation by rotating the driver bit 40 by a motor 72a installed in the driver main body 71.
  • the driver main body 71 has a body portion 72 in which the motor 72a is installed, a handle portion 73 having a switch 73a, and a chuck portion 74 for holding the driver bit 40. .
  • the driver bit 40 is made of iron, and in the illustrated example, the tip 41 has a minus shape, but the driver bit 40 may have various shapes such as a plus shape corresponding to a fixing tool.
  • the shaft portion of the driver bit 40 has an annular protrusion that protrudes outward from the circumferential surface.
  • the annular projection is a positioning portion 40a for attaching the magnetic attachment assisting body A to an appropriate position.
  • the positioning portion 40a regulates the attachment position of the magnetic attachment assisting tool 1 by bringing the rear end side end 1b of the magnetic attachment assisting tool body A into contact with the annular projection. It may be formed by press-fitting a separate ring body.
  • the positioning portion 40 a determines the distance from the tip end 1 a of the magnetic attachment aid 1 (magnetic force assisting member 50) to the tip 41 of the driver bit 40 and magnetically attaches the fastener to the tip 41 of the driver bit 40. In order to generate sufficient magnetic force. In particular, as described above, a strong magnetic force is required to adsorb the stainless steel fixture 45 (see FIG. 5) by the driver bit 40. However, the magnetic attachment aid 1 is correctly adjusted according to the positioning portion 40a in this manner. By attaching, a strong magnetic force capable of magnetically attaching the stainless steel fixture 45 can be generated.
  • the positioning portion 40a is also for restricting the movement of the magnetic attachment aid main body A to the proximal end 42 side of the driver bit 40, and may be a projection having another shape which may not be an annular projection. It is also good. Further, as shown in FIG. 11 (b), the positioning portion 40a is a plurality of fine grooves having a scale as shown in the enlarged view, for example, which determines the position of the tip end 1c of the magnetic attachment aid A. May be Note that, as the scale, a relative number representing the strength of the magnetic force generated at the tip when the magnetic attachment assisting tool main body A is aligned with the positioning portion 40a is appended. Further, for example, the display may be distinguished according to the material of the auxiliary tool to be magnetically attached to the tip of the bit, such as high, medium, low, iron strength, iron inside, iron weak, stainless steel, etc.
  • FIG.11 (c) is the figure which showed the example of the further another positioning part 40a.
  • a mark line is provided on the driver bit 40 as a positioning section 40a, and the mark line is provided with a magnetic attachment aid main body A (shown by a two-dot chain line on the right side in the figure assuming movement).
  • the iron fixing tool can be magnetically attached appropriately, while the rear end side end 1b of the magnetic attachment assisting tool main body A (shown by a two-dot chain line on the left side in the figure)
  • the stainless steel fixture 45 see FIG. 4
  • the magnetic attachment aid 1 is a retrofit member for the driver bit 40, it can be easily attached to effectively magnetize the driver bit 40.
  • the positioning portion 40a as described above it can be quickly attached to a position where an appropriate effect appears, so screwing work of the fixing tool can be efficiently performed.
  • the magnetic attachment assisting tool main body A may be integrated with the driver bit 40 in advance, or only the magnetic force assisting member 50 may be detachable.
  • a recess (not shown) for fitting connection is formed on the base end side so that the driver bit 40 which can be attached to and detached from the driver main body 71 is fixed and held by the chuck portion 54.
  • Such a straight shape is to avoid the occurrence of a magnetic flux leakage due to a gap between the surface of the driver bit 40 and the magnetic attachment aid 1.
  • the magnetic force assisting member 50 described above is strongly magnetically attached to the driver bit 40 by the magnetic attachment assisting tool body A, and when it is difficult to remove only that, the magnetic attachment assisting tool body A is shifted to the tip 41 You can remove it as you push it out. Since the magnetic attachment assisting tool main body A is frequently slid, the positioning portion 40a of the driver bit 40 illustrated in FIGS. 11 (a) to 11 (c) works effectively.
  • Magnetic attachment aid for fixtures (magnetic attachment aid)
  • a Magnetic attachment aid body 10 body case 11 body 12 lid 13 hollow through hole 15 yoke 16 resin material 21 permanent magnet 22 cushion material 23 auxiliary permanent magnet 25 chamfered joint surface 31 magnetic line (axis line connecting magnetic poles) 32 magnetic field line 35 pole branch point 40 driver bit 41 tip of driver bit 42 base end of driver bit 43 axis 45 stainless steel fixture (screw) 46 head 47 shaft portion 48 bit insertion groove 50 magnetic force assisting member 51 bit insertion hole 52 taper portion 60 magnetic shield case 61 bottomed cylindrical body (main body) 61a opening 61b inner bottom 61c side wall 62 bit end protection member 63 bottomed cylinder (lid) 63a inner bottom 63b side wall 64 bit end protection material 68 socket member 68a hollow hole 68b one end 68c other end 68d chuck cylinder 70 electric driver 71 driver main body 72 body 72a motor 73 handle 73a switch 74 chuck Department

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  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

L'invention concerne : un outil d'assistance à la fixation magnétique d'accessoires d'attache, grâce auquel des accessoires d'attache non seulement en fer, mais également en acier inoxydable, peuvent être magnétiquement attachés à la pointe d'un embout de tournevis par l'insertion de l'embout et la magnétisation de ce dernier ; et un tournevis électrique utilisant ledit outil. L'outil d'assistance à la fixation magnétique d'accessoires d'attache comporte : un corps d'outil d'assistance à la fixation magnétique (A) dans lequel de multiples aimants permanents (21) sont formés sous la forme d'un cylindre pétaloïde par liaison des aimants permanents (21) aux extrémités de polarité identique adjacentes entre elles dans un faisceau sans espaces, de telle sorte qu'un trou traversant creux (13) est formé au centre ; et un élément de renfort de force magnétique (50) constitué par un corps ferromagnétique cylindrique ayant un diamètre inférieur à celui du corps d'outil d'assistance à la fixation magnétique (A). Pour les multiples aimants permanents (21) : la direction de magnétisation est régulée de telle sorte que les lignes de point de force magnétique orientées vers la pointe (41) selon un angle incliné par rapport à la ligne d'axe d'un embout de tournevis (40) qui est inséré dans le trou traversant creux (13) ; et les lignes de force magnétique sont amenées à traverser l'élément de renfort de force magnétique (50), ce par quoi l'embout de tournevis (40) est inséré de telle sorte que l'élément de renfort est adjacent au corps d'outil d'assistance à la fixation magnétique (A) sur le côté de pointe de ce dernier.
PCT/JP2015/086227 2015-12-25 2015-12-25 Outil d'assistance à la fixation magnétique d'accessoires d'attache et tournevis électrique WO2017109938A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016534741A JP6085740B1 (ja) 2015-12-25 2015-12-25 固定具用磁着補助具および電動式ドライバー
PCT/JP2015/086227 WO2017109938A1 (fr) 2015-12-25 2015-12-25 Outil d'assistance à la fixation magnétique d'accessoires d'attache et tournevis électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/086227 WO2017109938A1 (fr) 2015-12-25 2015-12-25 Outil d'assistance à la fixation magnétique d'accessoires d'attache et tournevis électrique

Publications (1)

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WO2017109938A1 true WO2017109938A1 (fr) 2017-06-29

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JP (1) JP6085740B1 (fr)
WO (1) WO2017109938A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
KR102405190B1 (ko) * 2021-11-26 2022-06-07 이현민 전자석을 구비한 전동 드라이버

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110653740A (zh) * 2017-06-26 2020-01-07 丛爱国 磁性电工螺丝刀及其工作方法
CN115139259B (zh) * 2022-06-16 2023-07-28 国网浙江省电力有限公司湖州供电公司 一种计量电流互感器安装拆除辅助装置

Citations (5)

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JPS5847476U (ja) * 1981-09-29 1983-03-30 トヨタ自動車株式会社 ねじ締付工具
JPS59136999A (ja) * 1983-01-26 1984-08-06 株式会社デンソー 電磁、磁気シ−ルド箱
JP2004160616A (ja) * 2002-11-15 2004-06-10 Kanto Auto Works Ltd ビス締結ドライバ
US20070234857A1 (en) * 2005-04-08 2007-10-11 Burton Kozak Magnetic device for holding and driving bits and fasteners
JP3201631U (ja) * 2015-10-08 2015-12-17 光和管財株式会社 電動式ドライバー

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JP3201631B2 (ja) * 1991-12-20 2001-08-27 桂川電機株式会社 画像形成方法
AU2665399A (en) * 1999-02-03 2000-08-25 Wayne Anderson Driver tool with high energy magnets

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5847476U (ja) * 1981-09-29 1983-03-30 トヨタ自動車株式会社 ねじ締付工具
JPS59136999A (ja) * 1983-01-26 1984-08-06 株式会社デンソー 電磁、磁気シ−ルド箱
JP2004160616A (ja) * 2002-11-15 2004-06-10 Kanto Auto Works Ltd ビス締結ドライバ
US20070234857A1 (en) * 2005-04-08 2007-10-11 Burton Kozak Magnetic device for holding and driving bits and fasteners
JP3201631U (ja) * 2015-10-08 2015-12-17 光和管財株式会社 電動式ドライバー

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102405190B1 (ko) * 2021-11-26 2022-06-07 이현민 전자석을 구비한 전동 드라이버

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JPWO2017109938A1 (ja) 2017-12-28

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