JP6637153B2 - Ratchet wrench screw aid - Google Patents

Description

  The present invention facilitates proper engagement of a bolt and a nut with respect to a screw hole and a nut with a male screw, and fitting of a bolt head and a nut with a socket, particularly when attaching and detaching a bolt and a nut with a ratchet wrench in a narrow place. The present invention relates to a ratchet wrench screw assisting device.

  Conventionally, various types of ratchet wrench used for automobile maintenance and repair are found.

  Many of the ratchet wrenches have a hexagonal bolt head or a hexagonal column made of a hexagonal nut and a socket that can be inserted and removed, and an annular support portion provided at the tip of the gripping portion, and a circumferential direction of the hexagonal column body of the gripping portion. The socket is accommodated in such a manner that the socket is rotated only in one direction by the reciprocating operation (for example, see Patent Document 1).

  The socket is provided with a hexagonal column insertion hole formed by concentrically shifting at least two or more hexagonal holes matching the hexagonal column with a predetermined angle phase, and in the hexagonal column insertion hole, one hexagonal hole is provided. The hexagonal prisms are inserted so as to match, and the screw parts (bolts and nuts) are tightened and loosened by the reciprocating operation of the gripping portion in the circumferential direction of the hexagonal prisms.

  Also, in this ratchet wrench, a protruding portion provided at the base end of the annular support portion is arranged in a concave notch provided at the tip of the grip portion so that the annular support portion rotates in the front and back directions with respect to the grip portion. At the same time, the pivot penetrates through the protruding part and the concave notch, and such a bent type ratchet wrench is used for tightening and loosening screw parts. If it had, it was convenient and convenient.

Japanese Utility Model Registration No. 2572389 (FIGS. 3 and 7)

However, even if the ratchet wrench having the above configuration is used, the ratchet wrench cannot be used unless the male screw tip of the bolt or the screw hole of the nut is properly engaged with the male screw tip first. .
For example, in screwing work in narrow places that are hard to reach, even if you insert the bolt tip into the screw hole with one hand or hold the male screw tip pushed into the nut, the bolt head or nut is inserted into the ratchet wrench socket. In order to insert the hexagonal prism, the hand holding the hexagonal prism must be released from the hexagonal prism. At that moment, the meshing of the screws (the bolt and the screw hole, the nut and the male screw) is shifted. Even if the bolts and nuts come off and fall, or even if the hexagonal column can be inserted into the socket and the gripping part of the ratchet wrench can be rotated reciprocatingly, screwing of the screws does not advance, The same operation must be repeated many times in a narrow place until the screws mesh with each other.

  Further, even when the bolts and nuts to be screwed are removed from narrow places, if the hexagonal column (bolt head or nut) does not match one of the hexagonal holes in the hexagonal column insertion hole of the socket, the hexagonal column is removed. The problem of not being able to insert the column and having to repeat the work until the hexagonal column can be inserted into the hexagonal column by trial and error, such as changing the angle of the wrist of the hand holding the gripping part. Have.

  Therefore, in the present invention, when a screw part (bolt or nut) is attached to or detached from the narrow part by a ratchet wrench, appropriate engagement of the screw part with a part to be screwed (a screw hole for the bolt, a male screw for the nut) and the like. It is another object of the present invention to provide a ratchet wrench screw component alignment aid which facilitates the alignment of a hexagonal column (bolt head or nut) of a screw component with a hexagonal hole in a hexagonal column insertion hole.

In view of the above-mentioned problem, the screw part alignment aid of the ratchet wrench according to the present invention is configured such that at least two or more hexagonal holes matching a hexagonal column made up of a hexagonal bolt head or a hexagonal nut are concentrically shifted by a predetermined angle. The socket provided with a hexagonal column insertion hole formed by shifting the socket is attached to the annular support portion provided at the tip of the grip portion, and the socket is moved in one direction by the reciprocating operation of the grip portion in the circumferential direction of the hexagonal column body. In a ratchet wrench housed so as to rotate only, a pulley is attached to the socket so as to be rotatable concentrically, and a string is fixed to one end of the pulley, wound around the pulley, and the other end is drawn out to the base end side of the grip portion. It is characterized by.
Also, one side of the pulley is detachably provided at one end of the opening of the hexagonal column insertion hole in the socket, and one side of the pulley corresponds to one hexagonal hole of the hexagonal column insertion hole. The clip legs arranged at the six inner corners are protruded, and alternately three of the clip legs are elastically urged in the centripetal direction and the other three are elastically urged in the centrifugal direction to be able to expand and contract in diameter. It is characterized by having done.
Alternatively, one side surface of a pulley is detachably provided on one end of the opening portion of the hexagonal prism insertion hole in the socket, and the inner peripheral shape of the hexagonal prism insertion hole is provided at the center of the pulley on one side surface. The hexagonal column insertion hole has an outer peripheral shape that matches the inner peripheral shape of one hexagonal hole, and an insertion portion that is shorter than the depth of the hexagonal column insertion hole protrudes from the hexagonal column insertion hole. A ring-shaped magnet is integrally mounted around the base end of the fitting portion so as to be magnetically attachable only to the end face of the opening of the socket made of a magnetic material.
In the ratchet wrench, a string guide is provided at the base end of the annular support portion on the side where the pulley is attached to guide the other end of the string to the base end side of the grip portion.
In addition, the string guide is formed by protruding a rotatable support shaft so as to be able to be inserted and removed so as to stand upright on a base end surface of the annular support portion, and a string insertion hole is provided in a diameter direction of an upper end of the support shaft. It is characterized by being drilled.
Alternatively, the ratchet wrench arranges a protruding portion provided at the base end of the annular support portion in a concave notch provided at the tip of the grip portion so that the annular support portion rotates in the front and back directions with respect to the grip portion. The string guide is formed in a cylindrical shape through which the string can be inserted, and a pair of gate-shaped holders that can be fitted to the protrusion from above are formed. The holder is formed to be thinner than the gap between the left and right hook-shaped stepped end faces and the left and right sided tip end faces of the recessed portion. A vertical piece of a hook-shaped plate piece is provided in the gap so as to be insertable and removable from the side, and a retaining protrusion that can be hooked at the lower end of the side piece at the lower end of the outer edge of the vertical piece is provided. I do.
Further, the present invention is characterized in that a finger-hanging protruding piece is protruded outward at an appropriate position on the outer edge of the vertical piece of the holder.

In short, the present invention provides a socket provided with a hexagonal column insertion hole formed by concentrically displacing at least two hexagonal holes matching a hexagonal column made up of a hexagonal bolt head or a hexagonal nut with a predetermined angle. A ratchet wrench in which the socket is accommodated in an annular support portion provided at the tip of the grip portion so that the socket rotates only in one direction by the reciprocating operation of the grip portion in the circumferential direction of the hexagonal prism body. Consists of a pulley that is mounted concentrically rotatable, and a string with one end fixed and wound around the pulley and the other end fed out to the base end side of the pulley, so that ratchets of screw parts (bolts and nuts) in narrow places At the time of screwing with a wrench, a hexagonal prism (bolt head or nut) of the screw component is inserted into a socket. If the bolt is screwed, a bolt is inserted into the opening of the screw hole to screw the bolt. When the male screw tip is abutted, and if a nut is screwed, the screw hole opening of the nut is abutted on the male screw tip to screw the nut, and the other end of the string with the grip is pulled. Since the socket in which the hexagonal prism is inserted together with the pulley rotates in the rotatable direction, the bolt tip engages with the screw hole and the nut engages with the male screw tip so that it can be screwed, and the ratchet wrench can be held continuously. By rotating and reciprocating the part, the fastening of the screw component can be completed.
Also, when screw parts (bolts and nuts) are screwed down by a ratchet wrench in a narrow place, the hexagonal pillars (bolt heads or nuts) of the screw parts are brought into contact with the hexagonal column insertion holes of the socket, and the grip is held. By pulling the other end of the string at hand and rotating the socket together with the pulley in a rotatable direction, one of the hexagonal holes in the hexagonal column insertion hole is matched with the hexagonal column, and the hexagonal column is inserted into the socket. If the grip portion of the ratchet wrench is rotated and reciprocated as it is, the screw component can be detached from the screwed component (the screw hole for the bolt, the male screw for the nut).
Therefore, according to the present invention, when a screw part (bolt or nut) is attached to or detached from the narrow part by the ratchet wrench, the screw part is appropriately engaged with the threaded part (the screw hole for the bolt, the male screw for the nut). It is possible to easily and easily match the hexagonal column (bolt head and nut) of the screw part to the hexagonal hole in the hexagonal column insertion hole, so that the efficiency of attaching and detaching the screw part in a narrow place can be dramatically improved. .

  Also, one side of the pulley is detachably provided at one end of the opening of the hexagonal column insertion hole in the socket, and one side of the pulley corresponds to one hexagonal hole of the hexagonal column insertion hole. The clip legs arranged at the six inner corners are protruded, and alternately three of the clip legs are elastically urged in the centripetal direction and the other three are elastically urged in the centrifugal direction to be able to expand and contract in diameter. The clip legs are inserted into the hexagonal column insertion holes so as to be arranged at six inner corners corresponding to one hexagonal hole in the hexagonal column insertion hole. The pulley can be attached to the socket such that one side of the pulley is seated on the end face of the opening. The attached state can be held by the three clip legs elastically biased in the centrifugal direction, and in the centripetal direction. To three other elastically biased clip legs Thus, the three surfaces of the hexagonal column inserted into the hexagonal column insertion hole are elastically grasped, and the hexagonal column insertion state can be held more firmly. The pulley can be easily removed from the ratchet wrench (socket) by detaching the pulley from the end face of the hexagonal column insertion hole so that the clip leg is pulled out from the hexagonal column insertion hole when the column is not inserted. Can be removed.

  In addition, one side of the pulley is detachably provided on one end of the opening of the hexagonal column insertion hole in the socket, and the inner peripheral shape of the hexagonal column insertion hole is provided at the center of one side of the pulley. The hexagonal column insertion hole has an outer peripheral shape that matches the inner peripheral shape of one hexagonal hole, and an insertion portion that is shorter than the depth of the hexagonal column insertion hole protrudes from the hexagonal column insertion hole. An annular magnet is integrally mounted around the base end of the fitting portion so as to be magnetically attachable only to the opening end surface of the socket made of a magnetic material. One side of the pulley is magnetically seated on one end of the opening of the socket by magnet, and the pulley can be easily attached to the socket, and the attached state can be maintained by magnetic attachment of the magnet to the socket. With the hexagonal column By inserting into the hole, it is possible to achieve a concentric rotatable state without displacement with respect to the socket, and when removing the pulley from the ratchet wrench (socket), the insertion part must be inserted from the hexagonal column insertion hole. It can be easily achieved by pulling out and removing the magnet from the end face of the opening.

  A string guide that guides the other end of the string to the gripping base end side is provided at the base end of the annular support portion on the side where the pulley is mounted in the ratchet wrench, so that the string guide grips the gripping portion. It can be guided to the hand so that the string can be pulled and the socket with the pulley can be easily turned in a rotatable direction.

  The string guide is formed by protruding a rotatable support shaft so as to be able to be inserted and removed so as to stand upright on the base end surface of the annular support portion, and drills a string insertion hole in the diameter direction of the upper end of the support shaft. Therefore, when it is not necessary to attach a pulley to the ratchet wrench, it can be used as a normal ratchet wrench simply by removing the support shaft.

  Further, the ratchet wrench arranges a protruding portion provided at the base end of the annular support portion in a concave notch provided at the tip of the grip portion so that the annular support portion rotates in the front and back directions with respect to the grip portion. The string guide is formed in a cylindrical shape through which the string can be inserted, and a pair of gate-shaped holders that can be fitted to the protrusion from above are formed. The holder is formed to be thinner than the gap between the left and right hook-shaped stepped end faces and the left and right sided tip end faces of the recessed portion. The vertical piece of the hook-shaped plate piece is provided in the gap so as to be insertable into and removable from the side, and the stopper piece which can be hooked at the lower end of the side piece at the lower end of the outer edge of the vertical piece is provided. The space between the vertical pieces can be made wider and narrower by rotating the right and left hook-shaped pieces around the pivot. By vertically swinging each hook-shaped plate piece so as to narrow it from a state where the interval is widened on the protruding portion, a vertical piece is inserted from the outside toward the gap, and a convex is formed between the vertical pieces. When the protruding portion is pinched, the protruding portion is gripped so as to coincide with the inside of the entrance of the holder, and such a gripping state can be held by hooking the retaining projection at the lower portion of the side end surface, On the other hand, the string guide can be detached together with the holder from the protruding portion only by widening the interval between the vertical pieces so as to release the hook, thereby providing a detachable string guide exclusively for the bent type ratchet wrench.

  In addition, since the finger-hanging projection is projected outward at the appropriate position on the outer edge of the vertical piece of the holder, when removing the holder attached to the projection as described above, place a finger on the finger-hanging projection and place it between the vertical pieces. The right and left hook-shaped plate pieces can be easily swung upward so as to widen the gap, and the string guide can be detached from the ratchet wrench.

It is a top view of the screw part alignment auxiliary tool which omitted the string. It is a front view same as the above. It is AA sectional drawing of FIG. FIG. It is a top view of the ratchet wrench to which the screw component alignment auxiliary tool was attached. FIG. FIG. 6 is a sectional view taken along line BB of FIG. 5. It is CC sectional drawing of FIG. It is a perspective view showing other examples of a string guide. It is a front view same as the above. It is a top view of the ratchet wrench which shows a use condition same as the above. FIG. FIG. 13 is a sectional view taken along line DD of FIG. 12. It is the top view which omitted the string which shows the modification of a screw component alignment assistance tool. It is a front view same as the above. It is a bottom view same as the above. FIG. 15 is a sectional view taken along the line EE of FIG. 14. It is a top view of the ratchet wrench to which the screw component alignment auxiliary tool was attached. FIG. FIG. 19 is a sectional view taken along line FF of FIG. 18. FIG. 20 is a sectional view taken along line GG of FIG. It is sectional drawing of the ratchet wrench which shows a use state.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The screw component alignment assisting tool according to the present invention is provided so that a hexagonal column body P formed of a hexagonal bolt head or a hexagonal nut provided in the ratchet wrench R can be inserted (fitted / separated) and concentrically rotatable from the socket S. And a predetermined length of a synthetic fiber thin thread or string whose one end is fixed to the pulley 1 and wound several times, and the other end is fed to the base end side of the grip portion G of the ratchet wrench R. It mainly consists of the string 2.

  The ratchet wrench R is provided with a hexagonal column insertion hole H formed by concentrically displacing at least two or more hexagonal holes H1 and H2 that match the hexagonal column P with a predetermined angle (30 degrees in the illustrated example). The socket S is housed in an annular support portion F provided at the tip of the grip portion G such that the socket S rotates only in one direction by the reciprocating operation of the grip portion G in the circumferential direction of the hexagonal prism P. are doing.

  Further, the ratchet wrench R is provided with a projection F1 provided at the base end of the annular support portion F at the tip end of the grip portion G so that the annular support portion F rotates in the front and back directions with respect to the grip portion G. In addition to being arranged in the notch G1, the pivot K passes through the protrusion F1 and the notch G1.

In addition, the ratchet wrench R in the figure shows only the tip side of the grip portion G for convenience of explanation, and FIG. 7 shows a cross-sectional view of the ratchet wrench R, but the socket S is rotated only in one direction. The ratchet mechanism is omitted.
The ratchet wrench R in the illustrated example represents a so-called reversible type in which the socket S is turned over and the direction of rotation of the socket S is switched, but ratchet teeth are provided on the outer periphery as disclosed in Patent Document 1. The present invention also relates to a ratchet wrench having a rotation switching claw that penetrates an annular support portion that rotatably accommodates a socket, and that has a rotation switching claw that meshes with a ratchet tooth to provide rotation of the socket in one of right and left directions. A screw component alignment aid is applicable.

  One side (a lower flange 1b, which will be described later) of the pulley 1 is provided at one end of the opening portion H of the hexagonal column insertion hole H of the socket S so as to be freely attached (separated / separated), and one side of the pulley 1 is provided. Are provided with clip legs 3 arranged at six inner corners corresponding to one hexagonal hole (H1 in FIG. 8) of the hexagonal column insertion hole H.

The pulley 1 has a lower flange 1b having the same inner diameter as the spool 1a and a concentric lower flange 1b, and an inner diameter of the spool 1a formed on the upper and lower opening end faces of a metallic annular spool 1a having a predetermined diameter and a predetermined width. A concentric upper flange 1c having a smaller diameter is provided, and an annular protrusion 1d for caulking having an extremely short protruding length is provided at the small-diameter opening of the upper flange 1c, and projects downward toward the large-diameter opening 1e of the lower flange 1b. Has been established.
Note that one end of the string 2 is fixed to an appropriate position of the spool 1a by bonding, welding, or other appropriate means.

  The clip leg 3 has an outer diameter smaller than the large-diameter opening 1e, a through hole 4a through which the annular protrusion 1d can be inserted, and a seat made of an annular spring steel material thinner than the protrusion length of the annular protrusion 1d. It is composed of six elongated strip-shaped legs projecting downward from the six sides of the plate 4 integrally. The other three legs 3a of the clip legs 3 are elastically attached in the centripetal direction, and the other three legs 3b are elastically attached in the distal direction. The diameter can be freely expanded and contracted.

  Then, the seat plate 4 is inserted from the large-diameter opening 1e of the pulley 1, the annular projection 1d is inserted into the through hole 4a, and the upper surface of the seat plate 4 contacts the lower surface of the upper flange 1c. The seat plate 4 is fixed to the pulley 1 by caulking so as to expand and bend the distal end side of 1d outward, and the pulley 1 and the clip leg 3 are integrated, and each inner surface of the clip leg 3 is a hexagonal prism having a predetermined diameter. Each of the six sides of P can be abutted.

  The screw component alignment assisting tool (hereinafter, also referred to as an assisting tool) configured as described above is provided with one hexagon in the hexagonal column insertion hole H from above the hexagonal column insertion hole H in the ratchet wrench R. The clip leg 3 is simply inserted into the hexagonal column insertion hole H so as to be disposed at the six inner corners corresponding to the holes H1, and one side of the pulley 1 is attached to one end of the opening of the hexagonal column insertion hole H. The pulley 1 can be attached to the socket S (ratchet wrench R) such that the seat 1b is seated.

  The attached state of the pulley 1 to the ratchet wrench R can be held by the three clip legs 3b elastically urged in the centrifugal direction, and by the other three clip legs 3a elastically urged in the centripetal direction. The three surfaces of the hexagonal column P inserted into the hexagonal column insertion hole H are elastically gripped, and the inserted state of the hexagonal column P can be held more firmly.

  Further, in a state where the hexagonal column P is not inserted into the hexagonal column insertion hole H, the pulley 1 is pulled out of the hexagonal column insertion hole H so that the clip leg 3 is pulled out. By detaching from the end face of the opening of the fitting hole H, the auxiliary tool (the pulley 1) can be easily removed from the ratchet wrench R.

  Further, it is more preferable that the auxiliary tool includes a string guide 5 that can guide the other end of the string 2 toward the base end side of the grip portion G and guide the string 2 to a position where the grip portion G is gripped.

The string guide 5 is arranged at the base end of the annular support portion F on the side of the ratchet wrench R to which the pulley 1 is attached (upward in the illustrated example).
However, since the ratchet wrench R can be used on both sides and the pulley 1 can be detached from either side, the string guide 5 can also be detached from both the front and back of the ratchet wrench R.

  The string guide 5 has a support shaft 5a that is rotatable and rotatable so that it can be inserted and removed so as to stand upright on the base end surface of the annular support portion F. The insertion hole 5b is formed so as to be arranged on the same plane as the spool 1a of the pulley 1 attached to the ratchet wrench R.

  The support shaft 5a is formed of a round bar longer than the base end of the annular support portion F, and forms a countersunk head 5c at the lower end thereof.

  Then, at the base end of the annular support portion F, a perforation N is penetrated across the front and back, and each opening of the perforation N is provided with a counterbore corresponding to the countersunk head 5c, and the upper end of the support shaft 5a is erected. The support shaft 5a is protruded from the base end surface of the annular support portion F through the perforation N from the side opposite to the base end surface of the desired annular support portion F (see FIG. 7).

Another example of the string guide will be described with reference to FIGS.
The string guide 6 has a structure that can be attached only to the bending type ratchet wrench R. The string guide 6 is formed in a cylindrical shape through which the string 2 can be inserted, and has both ends formed in a trumpet shape.

  In addition, the string guide 6 can be placed on the upper surface of the projecting portion F1 of the pair of symmetrical hook-shaped plate pieces 8 constituting the portal-shaped holder 7 that can match the projecting portion F1 of the annular support portion F from above. The ends of the horizontal pieces 8a are pivoted, and the ends of the horizontal pieces 8a are superimposed one on the other and pivoted by the string guide 6, and one of the horizontal pieces 8a is bent backward by the thickness thereof, and The respective portions of the hook-shaped plate piece 8 are arranged at symmetrical positions (see FIGS. 9 to 11).

  The holder 7 is formed to be thinner than a gap M between the left and right hook-shaped stepped end faces F2 of the protrusion F1 and the left and right side end faces G2 of the concave portion G1 of the gripping section G. A vertical piece 8b of the piece 8 is provided so as to be able to be inserted and removed from the side, and a substantially right-angled triangular retaining protrusion 8c having a hypotenuse at the lower end of the outer edge of the vertical piece 8b that can be hooked on the curved surface below the side tip surface G2. Is provided.

  Further, a strip-shaped finger-hung protruding piece 8d that is gently curved on the protruding side of the retaining protruding piece 8c is provided outwardly at an appropriate position on the outer edge of the vertical piece 8b of the holder 7.

  The string guide 6 configured in this manner can make the interval between the vertical pieces 8b free and wide by rotating the right and left hook-shaped plate pieces 8 about this as a pivot, and the string guide 6 is formed on the protrusion F1. By swinging each hook-shaped plate piece 8 downward so as to narrow the gap from the widened state, the vertical piece 8b is inserted from the outside toward the gap M, and the protrusion F1 is formed between the vertical pieces 8b. When sandwiched, the protruding part F1 is gripped so as to match the inside of the portal 7a of the holder 7.

  Such a gripping state can be maintained by locking the retaining protrusion 8c at the lower portion of the side end surface G2, while increasing the interval between the vertical pieces 8b so as to release the locking. The string guide 7 can be separated from the holder together with the holder 7.

Next, a modified example of the screw component alignment assisting tool will be described with reference to FIGS.
This modification is basically the same as the above except that the means for freely attaching and detaching one side surface (lower flange) 1b of the pulley 1 to one end of one opening of the hexagonal column insertion hole H in the socket S is changed. Since the configuration is the same, the same or corresponding parts as those described above are denoted by the same reference numerals in the drawings, and description thereof will be omitted.
In addition, although the ratchet wrench R using the string guide 5 is shown in the drawing, the string guide 6 may be used similarly to the above.

  The pulley 1 is made of metal or plastic (preferably made of plastic) having a predetermined diameter and a predetermined width. The pulley 1 has the same inner diameter as that of the spool 1a and has the same inner diameter as that of the concentric spool 1a. A side flange 1b and an upper flange 1c are provided, and both flanges 1b, 1c are formed to have the same outer diameter, but a lower flange 1b is formed thicker (about twice in the illustrated example) than the upper flange 1c. I have.

The one side surface (lower flange) 1b of the pulley 1 matches the inner peripheral shape of the hexagonal column insertion hole H or the inner peripheral shape of one hexagonal hole H1 in the hexagonal column insertion hole H at the center thereof. An insertion portion 9 having a rounded outer shape and having a length shorter than the depth of the hexagonal column insertion hole H is protruded, and a magnetic material is provided around the base end of the insertion portion 9 in the lower flange 1b of the pulley 1. An annular magnet 10 is integrally mounted so that it can be magnetically attached only to the opening end face of the socket S.
Since the pulley 1 used in this embodiment is configured to be attached to the opening end face of the socket S by the magnet 10, at least the socket S in the ratchet wrench R needs to be formed of a magnetic material.

  The insertion portion 9 is provided with a communication port 9a at the center which is the same diameter as the opening of the spool 1a and is continuous with the opening, and the outer shape of the insertion portion 9 matches the inner shape of the hexagonal column insertion hole H as shown in the drawing. A polygonal prism or a hexagonal column (not shown) whose outer peripheral shape matches the inner peripheral shape of one hexagonal hole H1 (H2) in the hexagonal prism insertion hole H is inserted into the lower flange 1b. The outer periphery of the base end of the fitting portion 9 has the same outer diameter as the socket S and has a polygonal shape (a concave polygonal shape in the illustrated example) that matches the outer peripheral shape of the inserting portion 9 or the outer periphery of the inserting portion 9. A recess having a depth of about half the thickness of the lower flange 1b is formed in an annular plate shape having a circular opening inscribed in a polygonal shape, and a magnet 10 having a shape corresponding to the recess is embedded in the recess. The magnet 10 is fixed and the exposed surface of the magnet 10 is exposed on the same plane as the one side surface 1b of the pulley 1, and the magnet 10 is integrated with the one side surface 1b.

  The screw component alignment assisting tool (hereinafter, also referred to as an assisting tool) configured as described above is inserted into the hexagonal prism insertion hole H from above the hexagonal prism insertion hole H in the ratchet wrench R. 9, the magnet 10 magnetically attaches to one end face of the opening of the socket S, so that one side face 1b of the pulley 1 is seated on the end face of the opening and the pulley 1 is connected to the socket S (ratchet wrench R). Can be mounted on

  The state of attachment of the pulley 1 to the ratchet wrench R can be maintained by magnetically attaching the magnet 10 to the socket S, and at the same time as the outer corner of the insertion portion 9 by insertion of the insertion portion 9 into the hexagonal column insertion hole H. The concentric rotatable state with no positional displacement with respect to the socket S can be achieved by matching the hexagonal column insertion hole H with the inner corner portion.

  When the auxiliary tool (pulley 1) is removed from the ratchet wrench R (socket S), the insertion portion 9 is pulled out from the hexagonal column insertion hole H, and one side 1b (magnet) is cut from the opening end surface. It can be easily achieved by removing 10).

Next, the use of the screw component alignment aid according to the present invention will be described.
As described above, the pulley 1 and the string guides 5 and 6 through which the other end of the string 2 wound around the pulley 1 is inserted are attached to the ratchet wrench R. When screwing a component (bolt or nut), the hexagonal prism P of the screw component is inserted into the socket S. If the bolt is screwed, the bolt is screwed into the opening of the screw hole to screw the bolt. The tip of the male screw is abutted, and if the nut is screwed, the screw hole opening of the nut is abutted against the tip of the male screw to screw the nut, and the other end of the string 2 at hand holding the grip portion G When the socket is pulled, the socket S in which the hexagonal prism P is inserted together with the pulley 1 rotates in a rotatable direction, so that the tip of the bolt meshes with the screw hole and the nut meshes with the tip of the male screw so as to be capable of screwing, and the state can be maintained. Continue ratchetle If rotated reciprocally operating the gripping portion G of the switch R, you can complete the fastening of the screw part.

  Further, when the screw component is retreated at a narrow place by the ratchet wrench R, the hexagonal column insertion hole H of the socket S is brought into contact with the hexagonal column member P of the screw component, and the string 2 at hand with the grip portion G is held. By pulling the other end and rotating the socket S together with the pulley 1 in a rotatable direction, one of the hexagonal holes H1 and H2 in the hexagonal column insertion hole H is matched with the hexagonal column P, and the hexagonal column The body P can be easily inserted into the socket S, and if the grip portion G of the ratchet wrench R is rotated and reciprocated as it is, the screw component can be detached from the screwed component (the screw hole for the bolt, the male screw for the nut). .

1 pulley
1b One side 2 String 3 Clip leg 5 String guide
5a spindle
5b Insertion hole 6 String guide 7 Holder 8 Hook plate
8a Horizontal piece
8b Vertical piece
8c retaining piece
8d Finger hook 9 Insert
10 Magnet F Annular support
F1 protrusion
F2 Hook-shaped step end surface G Grip
G1 recess
G2 side one end surface H Hexagonal prism insertion hole
H1 hexagon socket
H2 Hex Socket K Axis M Clearance P Hexagonal R Ratchet Wrench S Socket

Claims (6)

A socket having a hexagonal column insertion hole formed by concentrically shifting at least two hexagonal holes that match a hexagonal column composed of a hexagonal bolt head or a hexagonal nut with a predetermined angle phase, A ratchet wrench housed in an annular support portion provided at the tip so that the socket rotates only in one direction by a reciprocating operation in the circumferential direction of the hexagonal prism body of the grip portion, and is mounted concentrically rotatable on the socket. and the pulley and wound around and fixed at one end to said pulley, Ri consists a string feeding the other end to the grip portion proximally of the pulley at one opening end face of the hexagonal column body inserting hole of the socket one A side surface is detachably provided, and one side surface of the pulley is provided with clip legs disposed at six inner corners corresponding to one hexagonal hole in the hexagonal column insertion hole, and protrudes from the clip legs. Every other Three legs is the centripetal direction, the other three leg screw parts alignment aid ratchet wrench, characterized in that it constitutes a universal scaling diameter resiliently urged in the centrifugal direction. A socket having a hexagonal column insertion hole formed by concentrically shifting at least two hexagonal holes that match a hexagonal column composed of a hexagonal bolt head or a hexagonal nut with a predetermined angle phase, A ratchet wrench housed in an annular support portion provided at the tip so that the socket rotates only in one direction by a reciprocating operation in the circumferential direction of the hexagonal prism body of the grip portion, and is mounted concentrically rotatable on the socket. One end of which is fixed to the pulley and wound around the pulley, and the other end is pulled out to the base end side of the gripping portion. The pulley is provided on one side surface with an inner peripheral shape of a hexagonal column insertion hole or an outer peripheral shape that matches the inner peripheral shape of one hexagonal hole in the hexagonal column insertion hole at the center thereof. Together with An insertion portion having a length shorter than the depth of the hexagonal column insertion hole is protruded, and it can be magnetically attached only to the end surface of the opening made of a magnetic material around the base of the insertion portion on one side of the pulley. A ratchet wrench screw component alignment aid characterized in that the annularly formed magnet is integrally attached . 3. A ratchet wrench according to claim 1, wherein a string guide for guiding the other end of the string to the base end side of the holding portion is provided at the base end of the annular support portion on the side where the pulley is mounted in the ratchet wrench. Screw part alignment aid. The string guide is formed by protruding a rotatable support shaft so as to be able to be inserted and removed so as to stand upright on the base end surface of the annular support portion, and drills a string insertion hole in the diameter direction of the upper end of the support shaft. 4. The screw part alignment aid for a ratchet wrench according to claim 3, wherein The ratchet wrench arranges a protruding portion provided at the base end of the annular support portion in a concave notch provided at the tip of the grip portion so that the annular support portion rotates in the front and back directions with respect to the grip portion, and has a convex portion. A string guide is formed in a cylindrical shape through which the string can be inserted, and a pair of left-right symmetrical members that form a gate-shaped holder that can be fitted to the protrusion from above. The holder is formed so as to be thinner than the gap between the hook-like stepped end surfaces on the left and right of the protruding portion and the left and right side tip end surfaces of the recessed portion. A vertical piece of a hook-shaped plate piece is provided in the gap so as to be insertable / removable from the side, and a retaining protrusion which can be hooked at a lower portion of the tip of the side piece is provided at a lower end of an outer edge of the vertical piece. Item 4. A screw part alignment aid for a ratchet wrench according to Item 3 . 6. The screw part alignment assisting tool for a ratchet wrench according to claim 5, wherein a finger-hanging protruding piece is provided at an appropriate position on an outer edge of the vertical piece of the holder .

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