JP2015168026A - spanner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spanner usable in a limited narrow space.SOLUTION: A first member (11) of a spanner (10) is provided with a holding part (20) having a pair of jaw parts (21 and 22) on one end in the longitudinal direction. One end in the longitudinal direction of a second member (12) is connected to the other end in the longitudinal direction of the first member (11) so as to freely rotate around a rotary shaft line (130). The holding part (20) is so formed that a length of an inside surface (21a) contacting a side surface (41) of a screw component, of the jaw part (21) positioned backward in the rotation direction in the pair of jaw parts is shorter than that of an inside surface (22a) contacting a side surface (42) of the screw component, of the jaw part (22) positioned forward in the rotation direction.

Description

  The present invention relates to a spanner used for tightening and loosening hexagonal screw parts.

  The spanner is used to tighten and loosen hexagonal screw parts such as bolts (heads) and nuts. Various kinds of spanners have been proposed for the purpose of improving the working efficiency.

  For example, Japanese Utility Model Laid-Open No. 7-20258 (Patent Document 1), Japanese Utility Model Laid-Open No. 6-80559 (Patent Document 2), Japanese Patent Publication No. 11-507879 (Patent Document 3), and Japanese Patent Application Laid-Open No. 7-266242. (Patent Document 4) discloses that when a screw component is tightened or the like, the upper jaw portion and the lower jaw portion can be re-engaged in a state where the screw component is positioned in the mouth portion. A spanner with an improved shape of the part is disclosed.

  Japanese Patent Laid-Open No. 2010-284551 (Patent Document 5) discloses a first arm having a spanner opening at one end and one end so that a bolt located in a narrow place or a recessed place can be easily tightened. There is disclosed a spanner in which a second arm having a grip portion is connected to a bolt in a rotating direction via a connecting shaft.

Japanese Utility Model Publication No. 7-20258 Japanese Utility Model Publication No. 6-80559 Japanese National Patent Publication No. 11-507879 Japanese Patent Laid-Open No. 7-266242 JP 2010-284551 A

  The spanner as described above is suitable for tightening and loosening work in a narrow space, but a spanner that can be used in a limited narrow space has been desired.

  An object of the present invention is to provide a spanner that can be used even in a limited narrow space.

  A spanner according to an aspect of the present invention is a spanner used for tightening and loosening hexagonal screw parts, and includes a first member and a second member. The 1st member is provided with the 1st clamping part which has a pair of jaw part which clamps the side surface which a screw component opposes in the longitudinal direction one end part. The second member is connected to the other end portion in the longitudinal direction of the first member so that the one end portion in the longitudinal direction is rotatable around the rotation axis. The first clamping portion has a length of an inner surface that contacts the side surface of the screw component of the jaw portion positioned rearward in the rotational direction of the pair of jaw portions, It is formed so as to be shorter than the length of the inner surface contacting the side surface.

  Preferably, the second member is longer than the first member.

  Preferably, the second member is formed such that the height along the rotation axis is higher at the other end than at the one end in the longitudinal direction.

  The first member may be formed such that the height along the rotation axis is higher at the other end than at the one end in the longitudinal direction.

  Preferably, the other end portion of the second member is provided with a second holding portion having a pair of jaw portions for holding opposite side surfaces of the screw component.

  The shapes of the first clamping part and the second clamping part are preferably point objects with the rotation axis as the center.

  According to the spanner of the present invention, it can be used even in a limited narrow space.

It is a top view which shows the spanner which concerns on Embodiment 1 of this invention. It is a perspective view which shows an example of the use location of a spanner. It is a figure which shows typically a mode that the clamping part of the spanner which concerns on Embodiment 1 of this invention rotates. It is a figure which shows typically the fastening operation | work using the spanner which concerns on Embodiment 1 of this invention. It is a figure which shows typically the shape of the spanner which concerns on Embodiment 1 of this invention. It is the figure which looked at the spanner which concerns on the modification 1 of Embodiment 1 of this invention from the side. It is the figure which looked at the spanner which concerns on the modification 2 of Embodiment 1 of this invention from the side. It is a top view which shows the spanner which concerns on Embodiment 2 of this invention. It is a figure which shows typically the shape of the spanner which concerns on Embodiment 2 of this invention. It is a figure which shows typically the loosening operation | work using the spanner which concerns on Embodiment 2 of this invention. It is a top view which shows the structural example of the spanner which concerns on Embodiment 3 of this invention.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

<Embodiment 1>
The spanner according to the present embodiment is a single-ended spanner. With reference to FIGS. 1-5, the spanner 10 which concerns on this Embodiment is demonstrated.

  The spanner 10 is used for tightening and loosening the hexagonal screw part 40. The screw component 40 may be, for example, a bolt head or a nut. In the present embodiment, the spanner 10 includes a first member 11 and a second member 12. The 1st member 11 has the clamping part 20 in the longitudinal direction one end part. The second member 12 is connected to the other end portion in the longitudinal direction of the first member 11 so that the one end portion in the longitudinal direction is rotatable around the rotation axis 130. In the present embodiment, the first member 11 and the second member 12 are rotatably connected by, for example, a connecting shaft 13. In this case, the rotation axis 130 is the center line of the connecting shaft 13.

  As shown in FIG. 2, the spanner 10 of the present embodiment is used for tightening and loosening the head 51 of the height adjusting bolt 50 or the nut 53 attached to the lower end of the outer wall panel (not shown), for example. Used. That is, the screw component 40 is the head 51 or the nut 53 of the height adjusting bolt 50. The height adjustment bolt 50 will be briefly described.

  The height adjusting bolt 50 is arranged on the outdoor side (arrow A1 direction) rather than the pillar 2 installed on the foundation 1 of the building. A head 51 (hereinafter also referred to as “bolt head”) 51 of the height adjusting bolt 50 is disposed on the foundation 1, and its shaft portion 52 includes a panel frame (not shown) positioned at the lower end of the outer wall panel, and a panel. It vertically penetrates the panel receiving portion 60 on which the frame is placed. The nut 53 supports the panel receiving portion 60 from below. A drainage fitting 70 for fixing a foundation drainer (not shown) arranged along the edge of the foundation 1 is attached to the height adjusting bolt 50 shown in FIG. In the example of FIG. 2, the two height adjusting bolts 50 are arranged in the width direction along the side surface of the pillar 2 on the outdoor side.

  Referring again to FIG. 1, the clamping part 20 has a pair of jaw parts 21 and 22 that clamp the opposing side surfaces 41 and 42 of the screw part 40. Of the pair of jaw portions, the jaw portion positioned forward in the rotation direction is referred to as an upper jaw portion 21. On the other hand, the jaw part located in the rotational direction rear of the pair of jaw parts is referred to as a lower jaw part 22. The rotation direction here is a direction that directly acts on the tightening and relaxation of the screw component 40. That is, the rotation direction when tightening the screw component 40 is clockwise, and the rotation direction when loosening the screw component 40 is counterclockwise. In the following description, for ease of understanding, a case where the screw component 40 is tightened by the spanner 10 is taken as an example.

  The upper jaw portion 21 has an inner side surface 21a that abuts one of the opposing side surfaces (side surface 41) of the screw component 40, and an inner side surface 21b adjacent to the inner side of the inner side surface 21a. The lower jaw portion 22 has an inner side surface 22a that abuts against the other side surface (side surface 42) of the screw component 40 and an inner side surface 22b adjacent to the inner side of the inner side surface 22a. The inner side surface 22b of the upper jaw part 21 and the inner side surface 22b of the lower jaw part are adjacent to each other. In the present embodiment, the clamping portion 20 is formed such that the length L1 of the inner side surface 21a of the upper jaw portion 21 is shorter than the length L2 of the inner side surface 22a of the lower jaw portion 22. The length L1 of the inner side surface 21a represents the length of the inner side surface 21a in the front-rear direction when the front end side of the inner side surface 21a is the front side and the adjacent inner side surface 21b side is the rear side. Similarly, the length L2 of the inner side surface 22a represents the length in the front-rear direction of the inner side surface 22a when the front end side of the inner side surface 22a is the front side and the adjacent inner side surface 22b side is the rear side.

  By forming the upper jaw part 21 and the lower jaw part 22 as described above, the screw part 40 remains engaged in the opening of the holding part 20 without once pulling the holding part 20 from the screw part 40. The screw part 40 can be tightened and returned. That is, as shown in FIG. 3, the operator turns the clamping part 20 clockwise (in the direction indicated by the solid line) by about 60 degrees and tightens the screw part 40, and then turns the clamping part 20 counterclockwise (indicated by the broken line). The screw component 40 can be clamped again by rotating it back in the direction).

  Note that the inner side surface 21a of the upper jaw portion 21 and the inner side surface 22a of the lower jaw portion 22 are not parallel, and the inner side surface 21a is slightly inclined so that the distal end side approaches the opposing inner side surface 22a side. desirable. Specifically, when a surface parallel to the inner side surface 22a when the rear end of the inner side surface 22a (the adjacent inner side surface 22b side) is defined as a “reference plane”, the inner side surface 21a with respect to the reference plane is defined. The formed angle θ is, for example, 11 degrees. By making the shape of the opening part of the clamping part 20 in this way, the hook of the upper jaw part 21 can be improved during tightening. The angle θ may be an acute angle in the range of 5 to 15 degrees.

  In addition, it is desirable that the dimension (shortest distance) L3 between the distal end portion of the inner side surface 21a of the upper jaw portion 21 and the inner side surface 22a of the lower jaw portion 22 be slightly larger than the opposite side L4 of the screw component 40. Thereby, the clamping part 20 can be smoothly rotated at the time of return.

  The adjustment work of the height adjustment bolt 50 shown in FIG. 2 must be performed in a limited and narrow space both in the width direction (arrow A2) and in the height direction. The spanner 10 of the present embodiment has a narrow width as shown in FIG. 2 because the second member 12 functioning as a handle is connected to the first member 11 so as to be rotatable. In addition, the screw part 40, that is, the bolt head 51 or the nut 53 can be tightened. Here, the case where the head 51 or the nut 53 of the height adjusting bolt 50 located on the left side of the paper surface (that is, the right side when viewed from the indoor side) is tightened is taken as an example. explain.

  Specifically, referring to FIG. 4, the operator holds the second member 12 in a state where the first member 11 is rotated to one side, and holds the clamping part 20 to the side of the screw part 40. Insert from the right side when viewed from the indoor side. Once the clamping part 20 is engaged with the screw part 40, the screw member 40 can be tightened by merely translating the second member 12 substantially along the depth direction of the foundation 1. That is, when the screw component 40 is tightened, the second member 12 is moved to the indoor side (direction indicated by a solid line), and when the screw member 40 is returned for retightening, the second member 12 is outdoors (shown by a broken line). Direction). The second member 12 is preferably longer than the first member 11.

  Here, the spanner 10 mainly adjusts the height of the panel receiving portion 60 by rotating the nut 53 shown in FIG. 2, but the height of the panel receiving portion 60 can also be adjusted by rotating the bolt head 51. Is adjusted. Although the bolt head 51 is mounted on the bottom wall 71 of the drainage fitting 70, the bolt head 51 is disposed immediately above the upper surface of the foundation 1. Therefore, when the bolt head 51 is tightened, if the second member extends straight in parallel on substantially the same surface as the first member 11, the hand holding the second member hits the upper surface of the foundation 1. Inefficient.

  In contrast, the second member 12 in the present embodiment has a height along the rotation axis 130 such that the other end is higher than the one end in the longitudinal direction (the connecting shaft 13 side). Is formed. Specifically, the 2nd member 12 has a level | step difference in the direction in alignment with the rotational axis 130, for example, the inclination part 123 is provided in the center part of the 2nd member 12 in a longitudinal direction. The inclined portion 123 is inclined so that the other end side is obliquely upward. Therefore, the height of the horizontal portion 122 on the other end side of the second member 12 is higher than the horizontal portion 121 on the one end side. Therefore, as shown in FIG. 5, the distance D2 between the foundation 1 and the horizontal part 122 as the gripping part can be made larger than the distance D1 between the foundation 1 and the horizontal part 121 on the connecting shaft 13 side. .

  Therefore, the operator can easily tighten the screw component 40 even if the screw component 40 is arranged on a plane like the foundation 1 (hereinafter referred to as “bottom wall surface”) or at a position close to the bottom wall surface. . Moreover, since the horizontal part 122 as a holding part is extended in parallel with the 1st member 11 in the position higher than the 1st member 11, the operator should just move the 2nd member 12 to a horizontal direction. . Therefore, the tightening operation can be performed more easily. In the present embodiment, the expression of the height used for the description of the spanner 10 is lower in the direction in which the rotation axis 130 extends, lower in the direction closer to the first member 11 (the sandwiching portion 20 thereof), and farther than this. Means higher.

  As described above, according to the present embodiment, the screw component 40 can be appropriately tightened even in a narrow space with a limited width and height. Therefore, working efficiency can be improved by using the spanner 10.

  In addition, when the depth dimension of the foundation 1 is not so large, there is a case where the second member 12 can be translated in a space where the foundation 1 does not exist below. For example, in such a case, the second member 12 may also extend straight like the first member 11. Alternatively, by adjusting the length of the second member 12 of the spanner 10 to be long, it may be possible to work from a space where the foundation 1 is not present below.

  Further, the shape of the spanner for facilitating the tightening operation of the screw component 40 on the bottom wall surface such as the foundation 1 is not limited to the above example. Other examples of the shape of the spanner will be described as modified examples 1 and 2.

(Modification 1)
FIG. 6 is a side view of the spanner 10A according to the first modification of the present embodiment. The spanner 10A has a first member 11A and a second member 12A, respectively, instead of the first member 11 and the second member 12 of the first embodiment.

  The second member 12A extends without a step in the longitudinal direction. On the other hand, the first member 11A is formed such that the height along the rotation axis 130 is higher at the other end than at the one end in the longitudinal direction. That is, the first member 11 </ b> A is formed higher on the connecting shaft 13 side than on the sandwiching portion 20 side.

  11 A of 1st members have a level | step difference in the longitudinal direction similarly to the 2nd member 12 in Embodiment 1, for example. That is, the inclined portion 113 is provided in the central portion of the first member 11A in the longitudinal direction. The inclined portion 113 is inclined so that the other end side is obliquely upward. Therefore, the height of the horizontal portion 112 on the other end side of the first member 11A is higher than the horizontal portion 111 on the one end side. The clamping part 20 is formed at the tip of the horizontal part 111.

(Modification 2)
FIG. 7 is a side view of the spanner 10B according to the second modification of the present embodiment. The spanner 10B has the first member 11A shown in the first modification instead of the first member 11 shown in the first embodiment. That is, the spanner 10B has the first member 11A and the second member 12 described above. In this case, both the first member 11A and the second member 12 are formed so that the other end side is higher. Thereby, the space | interval between the horizontal part 122 as a holding part of the 2nd member 12 and the foundation 1 can be taken more largely.

<Embodiment 2>
The spanner according to the present embodiment is a double-ended spanner. With reference to FIGS. 8-10, the spanner 10C which concerns on this Embodiment is demonstrated. The basic configuration of the spanner 10C is the same as that of the second modification of the first embodiment. Therefore, only the parts different from the spanner 10B shown in the modified example 2 will be described in detail here.

  As shown in FIGS. 8 and 9, the spanner 10 </ b> C includes a second member 14 instead of the second member 12 in the spanner 10 </ b> B (the spanner 10 shown in the first embodiment) shown in the second modification. Including. That is, the spanner 10 </ b> C includes the first member 11 </ b> A and the second member 14.

  The 2nd member 14 has the clamping part 30 which clamps the side surface of the screw component 40 in the other end part. Other than that may be the same as the above-mentioned second member 12. That is, like the second member 12, the second member 14 has a step in the longitudinal direction. An inclined portion 143 is provided between the horizontal portion 141 on one end side of the second member 14 and the horizontal portion 142 on the other end side. The clamping part 30 is formed in the horizontal part 142. The inclined portion 143 is inclined so that the other end side is obliquely upward.

  The shape of the opening of the clamping unit 30 is the same as that of the clamping unit 20. That is, the shapes of the upper jaw portion 31 and the lower jaw portion 32 of the sandwiching portion 30 are the same as the shapes of the upper jaw portion 21 and the lower jaw portion 22 of the sandwiching portion 20. However, it is desirable that the shape of the sandwiching portion 30 is point-symmetric with respect to the shape of the sandwiching portion 20 of the first member 11 </ b> A and the rotation axis 130. In this case, the screw component 40 can be tightened from both the left and right sides.

  For example, when adjusting the height adjustment bolt 50 on the left side in FIG. 2, the bolt head 51 is rotated by the clamping portion 20 of the first member 11 </ b> A as in the first embodiment. On the other hand, when adjusting the height adjustment bolt 50 on the right side (that is, the left side when viewed from the indoor side) shown in FIG. 2, the bolt head 51 is rotated by the clamping portion 30 of the second member 14. Can do. More specifically, when the worker works from the indoor side (post 2 side) as in the first embodiment, by gripping the first member 11A and moving the first member 11A to the outdoor side, The screw component 40 can be tightened. Moreover, it can return to a clamping position by moving the 1st member 11A to an indoor side. In the present embodiment, the first member 11A and the second member 14 may have the same length.

  In the present embodiment, when the spanner 10C is based on the one sandwiching portion 20, the height of the other sandwiching portion 30 is higher than the plate thickness of the first member having the sandwiching portion 20. Is formed. Therefore, as shown in FIG. 10, the spanner 10C is turned upside down and the clamping part 30 of the second member 14 is engaged with the screw part 40, so that the screw part 40 can be loosened or tightened. You can work from the same side.

  That is, according to the present embodiment, even when the spanner 10C is turned upside down, the gap between the foundation 1 and the first member 11A held by the operator is opened. Therefore, the clamping part 30 can be fitted into the screw part 40 from the same direction as when the screw part 40 is tightened. In addition, when performing the loosening operation of the height adjustment bolt 50 located on the left side of the sheet of FIG. 2, as shown in FIG. 10, by moving the first member 11A to the outdoor side (direction indicated by the solid line), The screw part 40 is loosened. Further, by moving the first member 11 </ b> A to the indoor side (the direction indicated by the broken line), the screw part 40 can be returned to the clamping position while the screw part 40 is engaged in the opening of the clamping unit 30.

  As described above, according to the present embodiment, it is possible to perform both forward rotation and reverse rotation and from both the left and right sides. Therefore, according to the spanner 10C, workability | operativity can be improved more fully.

  In the present embodiment, the adjustment work of the screw component 40 located on or near the bottom wall surface has been described. However, according to the spanner 10, the adjustment work of the screw component 40 located below or near the top wall surface is also performed. It can be done easily.

  The shape of the spanner 10C in the height direction along the rotation axis 130 is not limited to the shape shown in FIG. In the case of performing tightening and loosening operations of the screw parts arranged away from the bottom wall surface, such as when used for adjusting the nut 53 shown in FIG. 2, for example, both the first member and the second member are , It may extend straight in the horizontal direction. Alternatively, only one of the first member and the second member may have a step.

  The first embodiment and the second embodiment described above may be combined. An example of a spanner in this case will be described below as a third embodiment.

<Embodiment 3>
FIG. 11 is a plan view showing a configuration example of a spanner 10D according to Embodiment 3 of the present invention. Only the difference between the spanner 10D and the spanner 10C of the second embodiment will be described.

  The spanner 10 </ b> D includes a first member 11, a second member 14 </ b> A, and a third member 15. Similarly to the first member 11, the second member 14 </ b> A has no step in the height direction and extends straight.

  The third member 15 corresponds to the second member that functions as a handle in the first embodiment. Therefore, the third member 15 is rotatably connected to the first member 11 and the second member 14A around the rotation axis 130. However, the third member 15 does not have a step in the height direction and extends straight. For example, the third member 15 is disposed between the first member 11 and the second member 12 in the height direction.

  According to the spanner 10D of the present embodiment, the two screw parts 40 positioned on both sides of the third member 15 on the horizontal plane are connected to the sandwiching portion 20 of the first member 11 and the sandwiching portion 30 of the second member 14A. It is possible to tighten at once.

  Or when the plate | board thickness of the 1st member 11 and the 2nd member 14A is thin, you may use them, piled up and down. That is, the first member 11 and the second member 14A are stacked in the vertical direction, so that the screw component 40 having a height can be appropriately tightened.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1 foundation, 2 pillars, 10, 10A, 10B, 10C, 10D spanner, 11, 11A first member, 12, 12A, 14, 14A second member, 13 connecting shaft, 15 third member, 20, 30 Clamping part, 21, 31 Upper jaw part, 22, 32 Lower jaw part, 21a, 21b, 22a, 22b Inner side face, 40 Screw parts, 41, 42 Side face, 50 Height adjustment bolt, 51 Bolt head, 52 Shaft part, 53 Nut, 60 Panel receiving part, 70 Drainage fitting, 111, 112, 121, 122, 141, 142 Horizontal part, 113, 123, 143 Inclined part, 130 Rotating axis.

Claims (6)

A spanner used for tightening and loosening hexagonal screw parts,
A first member provided with a first sandwiching portion having a pair of jaws sandwiching opposing side surfaces of the screw component at one end in the longitudinal direction;
A second member whose one end in the longitudinal direction is connected to the other end in the longitudinal direction of the first member so as to be rotatable around a rotation axis;
The first sandwiching portion has a jaw portion located on the rear side in the rotational direction of the pair of jaw portions, the length of the inner side surface contacting the side surface of the screw component being located on the front side in the rotational direction, A spanner that is formed to be shorter than the length of the inner surface that contacts the side surface of the screw component.   The spanner according to claim 1, wherein the second member is longer than the first member.   The spanner according to claim 1 or 2, wherein the second member is formed such that a height along the rotation axis is higher at the other end than at one end in the longitudinal direction.   The said 1st member is formed so that the height along the said rotation axis may become higher in the other end part rather than the one end part in a longitudinal direction. The described spanner.   5. The second clamping part according to claim 1, wherein a second clamping part having a pair of jaw parts that clamp the opposing side surfaces of the screw component is provided at the other end part of the second member. spanner.   The spanner according to claim 5, wherein the shapes of the first clamping part and the second clamping part are point targets with the rotation axis as a center.

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