JP5046348B1 - wrench - Google Patents

Abstract

[PROBLEMS] To provide a wrench that has a simple structure and does not require much manufacturing cost, and that can be quickly turned.
A wrench portion is a set of a wrench portion and a grip handle portion that is detachably attached to the wrench portion. It is assumed that a wrench main body 12 is formed, and a fitting shaft portion 13 is provided along the axial direction on the outer periphery of the base end portion side of the long flange portion 12b of the wrench main body 12. The grip handle portion 15 is cut away from the fitting hole 16 formed so that the fitting shaft portion 13 can be fitted, and from the periphery to the outer periphery of the fitting hole 16 toward the inner side in the hole axial direction. The short rod portion 12a is accommodated in the accommodating portion 17 when the fitting shaft portion 13 on the wrench portion 11 side is fitted into the fitting hole 16 on the gripping portion 15 side. Like that.
[Selection] Figure 1

Description

  The present invention relates to a wrench, and more particularly to a wrench for fastening a hexagon socket bolt.

  As this kind of wrench, one having a short hook part and a long hook part connected in a substantially L shape is already widely known. When a large force is required, such as final tightening, this wrench is inserted into the hexagonal hole in the head of the bolt and then turned with the long hook, and the work is quickly turned without requiring too much force. If you want to use it, you can use it in two ways depending on the application, such as inserting the long hook part into the hexagonal hole instead of the short hook part and turning the short hook part. .

  However, when turning with the short saddle part, you must release your hand once every half rotation to return the wrist, and the workability is poor. There was a problem that it was difficult to turn.

  In order to solve this problem, for example, proposals disclosed in Patent Document 1 and Patent Document 2 have been proposed.

  Among them, the proposal of Patent Document 1 attaches a cylindrical base body provided with an opening into which the short part can be inserted at the center in the longitudinal direction to the short part, and changes the substantially L-shaped wrench into a T-shaped form. In this way, it is intended to make the gripping part longer to facilitate the quick turning. In addition, the proposal of Patent Document 2 includes a wrench, a support cylinder into which the long part of the wrench can be inserted, a wrench rod fixing cylinder into which the support cylinder can be screwed, and a handle. After inserting the wrench into the cylinder, the wrench rod fixing cylinder is screwed into the wrench to fix the wrench. The handle connecting part provided at the lower end of the wrench rod fixing cylinder and the wrench rod fixing connecting part provided at the top end of the handle body Are fastened using a handle body by connecting and fixing them.

JP 2008-272891 A Japanese Patent Publication No. 6-6269

  However, in the case of the proposal of Patent Document 1, although it is easy to hold the grip part as long as it is, it is necessary to release the hand once every half rotation like the conventional wrench and return the wrist. The problem is not solved, and in the case of the proposal of Patent Document 2, although such a problem is solved, there is a new inconvenience that the structure is complicated, the manufacturing cost is high, and the mounting is troublesome. .

  The present invention has been made in view of the problems of the conventional wrench, and an object of the present invention is to provide a wrench that is simple in construction and does not require much manufacturing cost, and that can be easily attached and easily rotated. It is in.

In order to achieve such an object, the wrench of the present invention is a set of a wrench part and a grip handle part detachably attached to the wrench part,
The wrench part is a wrench main body in which a short hook part and a long hook part are connected in a substantially L shape, and a fitting that is fixed along the axial direction covering the outer periphery of the base end part side of the wrench main body long hook part. It consists of a shaft part,
The grip handle portion is cut away from the fitting hole formed so that the fitting shaft portion can be fitted, and from the periphery of the fitting hole to the outer periphery of the grip handle portion toward the inner side in the hole axis direction. And a storage portion
When the fitting shaft portion on the wrench main body side is fitted into the fitting hole on the grip handle portion side, the short rod portion is accommodated in the accommodating portion.

  With this configuration, it is possible to attach the grip handle to the wrench as required, and when large force is not required, it is easy to quickly turn the work by attaching and turning the grip handle. To be able to perform. Moreover, the attachment of the gripping part to the wrench part is simple because it only requires the fitting shaft part to be inserted into the fitting hole, and the structure is simple, so that there is an advantage that the manufacturing cost is not so high.

  Preferably, an auxiliary shaft portion that protrudes further rearward from the position of the base end portion of the long hook portion is extended to the fitting shaft portion provided in the wrench body.

  By adopting such a configuration, the notch length of the housing portion can be shortened even if the fitting portion is lengthened, and the short hook portion that is housed in the housing portion even when performing a fast turn operation with the grip handle portion The advantage is that it does not get in the way. Here, the base end portion refers to a continuous portion of the long and short heel portions of the wrench body, that is, a substantially L-shaped bent portion, and the rear side refers to the base end portion of the long heel portion as a reference. It is the direction opposite to the direction toward the tip

  More preferably, a protective cover for protecting the short hook portion when it is accommodated is provided on the periphery of the accommodating portion.

  By adopting such a configuration, when the grip handle part is attached to the wrench part, there is an advantage that it is possible to prevent the wrench part from coming off due to an unintentional hand hitting the projecting short hook part. Arise.

  Preferably, a fitting hole for final fastening is formed in the gripping handle so that the leading end of the long hook can be fitted.

  By adopting such a configuration, it is possible to work by attaching the grip handle portion to the wrench portion even during the final tightening, and there is an advantage that workability is further improved.

  Preferably, the gripping handle portion is provided with an insertion hole and a receiving portion on both end surfaces in the axial direction, and a protective cap that can be worn on both end surfaces.

  By taking such a structure and making each correspond to the fitting shaft part of a different magnitude | size, the advantage that one grip handle part can be used for a some wrench part arises.

  According to the present invention, it is possible to provide a wrench that is simple in structure and does not require much manufacturing cost, and that is easily attached and that can be easily rotated.

The 1st Embodiment of the wrench concerning the present invention is shown, (a) is a perspective view of the state where it attached, before attaching a grip handle part to a wrench part. (A) is a partial cross-sectional side view of a state in which the grip handle portion is mounted on the wrench portion, and (b) is in a mounted state. (A) is a plan view of the wrench part, (b) is a sectional view taken along line AA in (a), (c) is a sectional view taken along line BB in (d), and (d) is a handle handle. The side view of a part, (e) is a top view of a grip handle part. The modification 1 of 1st Embodiment of the wrench concerning this invention is shown, (a) is a partial cross section side view of a grip handle part, (b) is before attaching a handle pattern part to a wrench part, (C) is a perspective view of the mounted state. The modification 2 of 1st Embodiment of the wrench concerning this invention is shown, (a) is a partial cross section side view of a grip handle part, (b) is before attaching a handle pattern part to a wrench part, (C) is a perspective view of the mounted state. The modification 3 of 1st Embodiment of the wrench concerning this invention is shown, (a) is before attaching a grip handle part to a wrench part, (b) is a perspective view of the mounted state, (c) is The partial cross section side view of a grip handle part. 2A and 2B show a second embodiment of a wrench according to the present invention, in which FIG. 1A is an overall perspective view when a plurality of wrench parts are set, and FIG. 2B is a grip with a protective cap fitted to one of the wrench parts. The perspective view of the state which mounted | wore with the handle part.

  Hereinafter, although the embodiment of the wrench concerning the present invention is described based on a figure, it is not limited to this. Here, for the sake of convenience, the front end side of the long hook portion of the wrench portion is described as the front, and the base end side is described as the rear.

<< First Embodiment >>
1 to 3 show a first embodiment of a wrench according to the present invention, in which FIG. 1 (a) is a perspective view of a state in which the grip handle portion is attached to the wrench portion, and FIG. FIG. 2A is a partial cross-sectional side view of a state in which the grip handle portion is attached to the wrench portion, and FIG. 3 (a) is a plan view of the wrench part, (b) is a cross-sectional view taken along line AA in (a), (c) is a sectional view taken along line BB in (d), and (d) is a grip handle. The side view of a part and (e) are top views of a grip handle part.

  In the figure, the wrench 10 includes a wrench portion 11 and a grip handle portion 15, and the wrench portion 11 is further configured by a wrench body 12 and a fitting shaft portion 13.

  Hereinafter, the wrench portion 11 will be described in more detail.

  The wrench body 12 of the wrench portion 11 is formed by bending a metal square bar body having a hexagonal shape in cross section into a substantially L shape. Reference numeral 12a denotes a short rod portion, and 12b denotes a long rod portion. Shows the part. Further, a spherical ball point 12c is formed at the distal end of the elongate portion 12b.

  The fitting shaft portion 13 of the wrench portion 11 is made of a synthetic resin material, and extends in the axial direction on the long end portion 12b proximal end side (the side where the short end portion 12a is continuously provided) of the wrench body 12. It is provided along, and has a hexagonal column shape covering the outer peripheral surface of the long flange portion 12b. An auxiliary shaft portion 13 a that extends further rearward than the position of the short rod portion 12 a is integrally provided at the rear end portion of the fitting shaft portion 13. Therefore, the short rod part 12a of the wrench body 12 is shaped to protrude upward from substantially the vicinity of the center of the entire length of the fitting shaft part 13 including the auxiliary shaft part 13a.

  The grip handle portion 15 is formed of a hard synthetic resin material, has a substantially cylindrical shape in which a substantially central portion in the axial direction bulges outward in the radial direction, and has a diameter on one end face side (here, the front side) thereof. A substantially hexagonal fitting hole 16 into which the fitting shaft portion 13 of the wrench portion 11 can be detachably fitted is formed in the center of the direction along the axial direction. When the accommodating portion 17 is cut away from the periphery to the outer periphery of the gripping handle portion 15 toward the back side, and the fitting shaft portion 13 is inserted into the fitting hole 16, the short hook portion 12a is formed. It is accommodated in the accommodating portion 17.

  The wrench 10 having such a configuration is used as follows.

  First, when a large force is required, at the time of final tightening or starting of loosening work. Hold the wrench 11 alone, and insert the tip of the short hook 12a into the hexagon hole of a hexagon socket head bolt (not shown) and turn it with the long hook 12b as with a normal wrench. Or loosen it.

  Next, when tightening or loosening work that does not require great force. First, after aligning the positions of the short hook portion 12a of the wrench portion 11 and the accommodating portion 17 of the grip handle portion 15, the grip handle portion 15 is moved from the side on which the auxiliary shaft portion 13a is formed. Are inserted into the fitting holes 16. As the fitting shaft portion 13 is fitted into the fitting hole 16, the short flange portion 12a is also accommodated in the accommodating portion 17, the fitting shaft portion 13 is the inner end of the fitting hole 16, and the short rod portion 12a is the accommodating portion. When reaching the rear end of 17, the gripping handle 15 is attached to the wrench 11.

  And in this state, if the grip handle 15 is held and the ball point 12c provided at the tip of the long hook 12b is inserted into the hexagon hole of the hexagon socket head bolt and then turned in the circumferential direction, the grip handle 15 Has a sufficient diameter, so that even if the wrench body 12 has a small diameter, it can be easily rotated quickly regardless of the diameter.

  As described above, in the present invention, when a large force is required, such as at the time of final tightening or starting loosening, the wrench portion 11 can be used alone to perform work with the same usability as a normal wrench. When a large force is not required, the gripping handle 15 is attached to the wrench 11 so that the work can be easily turned quickly. In addition, since the fitting shaft portion 13 on the wrench portion 11 side is simply fitted into the fitting hole 16 on the grip handle portion 15 side, the fitting shaft portion 13 can be easily mounted, and the structure itself is simple, so that there is an advantage that the manufacturing cost is not so high. .

  Note that the auxiliary shaft portion 13a protruding rearward from the fitting shaft portion 13 is not essential and may not be formed. However, in that case, it is necessary to cut out the accommodating portion 17 deeper in the back direction. In other words, the auxiliary shaft portion 13a is protruded so that the wrench portion 11 can be securely attached even if the cutout length of the accommodating portion 17 is shallow, thereby grasping the grip handle portion 15 and quickly rotating it. This is an advantage that the short rod portion 12a that protrudes when the user does not get in the way.

  Further, in order to prevent the wrench part 11 from being easily removed when the gripping handle part 15 is in the fitted state, the both side walls of the housing part 17 are provided with protrusions directed toward each other, respectively. You may make it contact | abut to the near surface (side opposite to a notch back side) of the short rod part 12a in the state accommodated in 17. FIG. When such a configuration is adopted, if the wrench portion 11 is pulled with a little force, both side walls of the accommodating portion 17 provided with the protrusion are elastically deformed so that the short rod portion 12a expands in the direction in which it is removed. It is necessary to keep it.

<< Variation 1 of First Embodiment >>
FIG. 4 shows a first modification of the first embodiment. Here, the tip of the elongate portion 12b can be further fitted into the center of the bottom surface of the fitting hole 16 formed in the gripping handle portion 15. A fitting hole 71 for final fastening is formed. By adopting such a structure, even when a large force is required, the gripping handle 15 can be used as shown in FIG. 4C, and only the wrench 11 is used alone. There arises an advantage that there is no problem with the treatment of the grip handle portion 15 that is not used.

<< Modification 2 of the first embodiment >>
FIG. 5 shows a second modification of the first embodiment. Here, the gripping handle portion 15 has a substantially radial direction of the end surface on the opposite side in the axial direction from the end surface provided with the fitting hole 16. A fitting hole 81 for final tightening capable of fitting the tip of the long flange portion 12b is formed in the center. By taking such a structure, the same advantages as those of the first modification are obtained, and the insertion of the fitting shaft portion 13 is facilitated.

  4 and 5, it is assumed that the fitting holes 71 and 81 for final tightening are formed at substantially the center in the radial direction of the gripping handle portion 15, but in the case of final tightening, the short holes inserted into the hexagonal holes are used. Since the long eaves part 12b is rotated in an arc shape around the eaves part 12a, there is no particular problem even if the elongate part 12b is formed at a position shifted from the center.

<< Modification 3 of the first embodiment >>
FIG. 6 shows a third modification of the first embodiment, and the accommodating portion 17 here has a protective cover portion 91 formed at the periphery of the rear portion (the back side of the notch). Specifically, the protective cover portion 91 is composed of a peripheral wall 91a erected from the rear periphery of the accommodating portion 17 and a top wall 91b connected to the upper end edge of the peripheral wall 91a. Thus, when the gripping handle 15 is mounted on the wrench 11, the short hook 12a that protrudes radially outward from the outer peripheral surface of the gripping handle 15 There is an advantage that it is possible to prevent the inconvenience that the wrench portion 11 is unintentionally detached when hit by a person's hand.

  The protective cover 91 may be only the peripheral wall 91a without providing the top wall 91b. In short, as long as the short cover 12a is not removed when a hand or the like collides with it, the protective cover 91 may be covered. Good. Conversely, it may be formed so as to cover the entire accommodating portion 17 in an arch shape. Moreover, it is not necessarily limited to what was formed integrally with the grip handle part 15, For example, it formed as another body using another material, and this was attached to the handle part 15 Good.

<< Second Embodiment >>
7A and 7B show a second embodiment of the wrench according to the present invention, wherein FIG. 7A is an overall perspective view when a plurality of wrench parts are set, and FIG. 7B is a grip handle on one of the wrench parts. It is a perspective view of the state which mounted | wore the part.

  In the figure, the wrench 20 is composed of a wrench part 21 and a grip handle part 25, and the wrench part 21 further comprises a wrench body 12 and a fitting shaft part 23. Since the basic configuration of the second embodiment is substantially the same as that of the first embodiment, the same portions are denoted by the same reference numerals in order to avoid complexity, and the description thereof is omitted, and only different portions are described. Do it.

  Here, the fitting shaft portion 23 and the auxiliary shaft portion 23a have a quadrangular shape in a sectional view, and from the upper wall of the fitting shaft portion 23, the fitting shaft portion 23 and the auxiliary shaft portion 23a have a rectangular shape in a sectional view covering the entire lower periphery of the projecting short rod portion 12a. A peripheral wall 23b is erected.

  Thus, the sectional view shape of the fitting shaft portion is not limited to the hexagonal shape, but may be a quadrangular shape or other polygonal shapes, and may be a circular shape. However, in the case of a circular shape, the fitting shaft part itself has no role as a rotation stopper, and therefore, the contact portion between the peripheral edge of the housing part and the short hook part plays a role as a rotation stopper. Therefore, it is necessary to increase the strength of the corresponding part to such an extent that it can withstand the force applied during rotation. Further, when the fitting shaft portion has a polygonal shape, the housing portion and the short rod portion do not need to be fitted, and it is only necessary that the short rod portion is accommodated, so that a gap is provided between them. If the fitting shaft part and the auxiliary shaft part are circular, there is no problem. It is necessary to keep them together.

  Note that the fitting shaft portion and the auxiliary shaft portion do not have to be the same size, and the width and height of the auxiliary shaft portion may be made slightly smaller. Further, these are not limited to those made of synthetic resin, and may be, for example, a metal tube-like one that is attached to a long eave portion and fixed by a known fixing means such as caulking or welding. . Further, the fitting shaft portion and the auxiliary shaft portion are not limited to being integrally formed. For example, the auxiliary shaft portion is attached to the fitting shaft portion so as to be rotatable as a separate body. The auxiliary shaft portion may be bent in the opposite direction to the short rod portion inserted into the hexagonal hole so as not to obstruct the rotating operation.

  Next, as a feature different from the first embodiment, in the second embodiment, in addition to the fitting hole 26 and the accommodation portion 27 provided on the front end surface side of the grip handle portion 25, the same applies to the rear end surface side. The fitting hole 26a and the accommodating portion 27a having different configurations and the set dimensions are provided, and in this second embodiment, the fitting shaft portion 23 having two types of dimensions can be handled. .

  FIG. 8A shows this as a specific example, in which a plurality of small wrench bodies 12 having different diameters (for example, 1.5 mm, 2 mm, and 2.5 mm) having the same outer dimensions are fitted. A shaft portion 23 is provided to form a first group, and a fitting hole 26 and a housing portion 27 provided on the front end face side are associated with this, and a wrench main body 12 (for example, 3 mm and 4 mm) having a similar diameter is also provided. Collectively as two groups, this is made to correspond to the fitting hole 26a and the accommodating portion 27a provided on the rear end face side, so that one grip handle portion can correspond to a wider range of wrench diameters.

  Reference numeral 28 denotes a protective cap formed so as to be able to be attached to both ends in the axial direction of the gripping handle portion 25, and is attached to the end portion on the side not used as shown in FIG. 8 (b). Thus, when gripping handle portion 25 is grasped, the edge of the accommodating portion (the side on which either 27 or 27a is not used) or the like plays the role of preventing discomfort caused by hitting the palm.

10, 20 Wrench 11, 21 Wrench part 12 Wrench body
12a Long rod portion 12b Short rod portion 12c Ball point 13, 23 Fitting shaft portion 13a, 23a Auxiliary shaft portion 15, 25 Grip handle portion 16, 26, 26a Fitting hole 17, 27, 27a Housing portion

Claims (5)

A set of a wrench part and a grip handle part detachably attached to the wrench part,
The wrench part is a wrench main body in which a short hook part and a long hook part are connected in a substantially L shape, and a fitting that is fixed along the axial direction covering the outer periphery of the base end part side of the wrench main body long hook part. It consists of a shaft part,
The grip handle portion is cut away from the fitting hole formed so that the fitting shaft portion can be fitted, and from the periphery of the fitting hole to the outer periphery of the grip handle portion toward the inner side in the hole axis direction. And a storage portion
A wrench characterized in that the short hook portion is accommodated in the accommodating portion when the fitting shaft portion on the wrench body side is fitted into the fitting hole on the grip handle portion side.   2. The wrench according to claim 1, wherein an auxiliary shaft portion that protrudes further rearward from a position of a base end portion of the elongated hook portion is provided on the fitting shaft portion.   The wrench according to claim 1 or 2, wherein a protective cover for protecting the short hook portion when it is received is provided on the periphery of the storage portion.   The wrench according to any one of claims 1 to 3, wherein a fitting hole for final tightening capable of fitting a tip end portion of the elongate hook portion is formed in the grip handle portion.   The said holding hole is provided with the said insertion hole and the said accommodating part in the axial direction both end surfaces of the said grip handle part, respectively, Comprising: The protective cap which can be attached to both of both said end surfaces is provided. Wrench described in any

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