Fastening component manipulation tool

Abstract

To provide a fastening member operating tool that can appropriately suppress the co-rotation of the bolt as the nut rotates. [Solution] The fastening member operating tool 10 comprises a first member 20 that engages with a nut, a second member 30 that engages with a bolt, and a rotating mechanism 40. The rotating mechanism 40 can rotate the second member 30 about the rotation axis RA without rotating the first member 20, and can also rotate the first member 20 about the rotation axis RA without rotating the second member 30. The second member 30 engages with the bolt by rotation by the rotating mechanism 40.

Description

Technical Field

[0001] The present disclosure relates to a fastener operating tool.

Background Art

[0002] Tools for suppressing the co-rotation of a bolt and a nut when tightening the nut are known. As an example, Patent Document 1 discloses a bolt tightening tool including a socket engaging with a nut and a fixing bit engaging with a bolt. In Patent Document 1, when the socket tightens the nut, the fixing bit suppresses the rotation of the bolt.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the bolt tightening tool of Patent Document 1, the fixing bit engages with the bolt by engaging with the groove portion of the bolt. However, when the groove portion of the bolt is shallow, when the groove portion is deformed, or when the bolt has no groove, the bolt cannot be properly fixed. For this reason, there are cases where the co-rotation of the bolt accompanying the rotation of the nut cannot be suppressed.

Means for Solving the Problems

[0005] (1) A fastening member operating tool that solves the above problem is a fastening member operating tool for tightening a nut and a bolt, or loosening the fastening of a nut and a bolt, comprising: a first member that engages with the nut; a second member that engages with the bolt; and a rotating mechanism that can rotate the second member about a rotation axis without rotating the first member, and can rotate the first member about a rotation axis without rotating the second member, wherein the second member engages with the bolt by rotation by the rotating mechanism.

[0006] In this configuration, the second member engages with the bolt through rotation by the rotation mechanism, making it easier to engage the second member with the bolt. This effectively suppresses the bolt from rotating along with the nut.

[0007] (2) The fastening member operating tool described in (1) above, further comprising a rotating shaft that rotates about a first axis, wherein the rotating mechanism transmits the rotational force of the rotating shaft to the first member so that the first member rotates in a first circumferential direction among the circumferential directions with respect to the rotating axis, and transmits the rotational force of the rotating shaft to the second member so that the second member rotates in a second circumferential direction opposite to the first circumferential direction.

[0008] With this configuration, the rotational force of the rotating shaft can be transmitted to both the first member and the second member by the rotating mechanism.

[0009] (3) In the fastening member operating tool described in (2) above, the rotation mechanism has a differential gear, the differential gear has a first gear provided on the rotation shaft, a second gear that rotates about a second axis intersecting the first axis and engages with the first gear, a third gear that revolves around the second axis in conjunction with the rotation of the second gear, a fourth gear that rotates about the second axis and engages with the third gear, a fifth gear that rotates integrally with the fourth gear about the second axis, and a third axis that rotates parallel to the rotation axis, The first member has a sixth gear that engages with the fifth gear, a seventh gear that rotates integrally with the sixth gear about the third axis, an eighth gear that rotates about the second axis and engages with the third gear, a ninth gear that rotates integrally with the eighth gear about the second axis, a tenth gear that rotates about a fourth axis parallel to the axis of rotation and engages with the ninth gear, and an eleventh gear that rotates integrally with the tenth gear about the fourth axis, the first member has a first input gear that engages with the seventh gear, and the second member has a second input gear that engages with the eleventh gear.

[0010] With this configuration, the rotation of the rotating shaft can be transmitted by the differential gear to the first member via the seventh gear and to the second member via the eleventh gear.

[0011] (4) In the fastening member operating tool described in any one of (1) to (3) above, the first member has a first main body that rotates about the rotation axis and a first engaging portion that engages with the nut, the first main body is formed in a cylindrical shape and the first engaging portion is provided on the inner circumferential surface of the first main body.

[0012] With this configuration, since the first engaging portion is provided on the inner circumferential surface of the cylindrical first main body, the first engaging portion can easily engage with the corner of the nut.

[0013] (5) In the fastening member operating tool described in (4) above, the rotating mechanism is housed inside the first main body. With this configuration, the rotating mechanism is housed inside the cylindrical first main body, making the fastening member operating tool easy to handle.

[0014] (6) In the fastening member operating tool described in any one of (1) to (5) above, the second member has a second main body that rotates about the rotation axis and a second engaging portion that engages with the bolt, wherein the second engaging portion is provided at the tip of the second main body and is configured to be screwed onto the bolt by the rotation of the second main body.

[0015] With this configuration, the second engaging part engages with the bolt by being screwed onto it, eliminating the need to pre-install engaging structures such as holes, grooves, or threads on the bolt.

[0016] (7) In the fastening member operating tool described in (6) above, the second engaging portion has a projection extending from the tip of the second main body in the first axial direction among the axial directions with respect to the rotation axis, and a claw extending from the projection in the radial direction with respect to the rotation axis and extending in the first axial direction.

[0017] In this configuration, when the second engaging portion engages with the bolt, the projection and claw portion pierce the bolt. The claw portion prevents the second member from spinning freely relative to the bolt. [Effects of the Invention]

[0018] The fastening member operating tool of this disclosure can effectively suppress the co-rotation of the bolt with the rotation of the nut. [Brief explanation of the drawing]

[0019] [Figure 1] This is a perspective view of a fastening member operating tool according to an embodiment. [Figure 2] Figure 1 is a schematic diagram showing the first member in cross-section. [Figure 3]It is a view of the fastening member operating tool in FIG. 1 as seen from the second axial direction among the axial directions regarding the rotation axis. [Figure 4] In the fastening member operating tool in FIG. 1, it is a schematic diagram showing the structure of the rotation mechanism. [Figure 5] It is a first schematic diagram showing the steps of the working method by the fastening member operating tool in FIG. 1. [Figure 6] It is a second schematic diagram showing the steps of the working method by the fastening member operating tool in FIG. 1. [Figure 7] It is a third schematic diagram showing the steps of the working method by the fastening member operating tool in FIG. 1. [Figure 8] It is a fourth schematic diagram showing the steps of the working method by the fastening member operating tool in FIG. 1.

Mode for Carrying Out the Invention

[0020] <Embodiment> Referring to FIGS. 1 to 8, the fastening member operating tool 10 according to the embodiment will be described.

[0021] <Configuration of the fastening member operating tool> The fastening member operating tool 10 shown in FIG. 1 is a tool for operating a nut 200 and a bolt 300 as fastening members. The fastening member operating tool 10 is a tool for tightening the nut 200 and the bolt 300 or loosening the fastening of the nut 200 and the bolt 300. The fastening member operating tool 10 tightens the nut 200 onto the bolt 300. In a structure in which an object is tightened by the nut 200 and the bolt 300, the fastening member operating tool 10 tightens the nut 200 from the surface side where the nut 200 is disposed. The fastening member operating tool 10 loosens the fastening of the nut 200 and the bolt 300. In a structure in which an object is tightened by the nut 200 and the bolt 300, the fastening member operating tool 10 loosens the nut 200 from the surface side where the nut 200 is disposed.

[0022] The fastening member operating tool 10 comprises a first member 20, a second member 30, and a rotating mechanism 40. The first member 20 engages with the nut 200. The second member 30 engages with the bolt 300. The rotating mechanism 40 can rotate the second member 30 about the rotation axis RA without rotating the first member 20. The rotation axis RA coincides with the axis of the bolt 300 when the first member 20 is engaged with the nut 200 and the second member 30 is engaged with the bolt 300.

[0023] The fastening member operating tool 10 further comprises a rotating shaft 50. The rotating shaft 50 rotates about a first axis A1. In this embodiment, the first axis A1 is an axis that coincides with the rotation axis RA. Rotational force is input to the rotating shaft 50 from an electric motor. The rotating shaft 50 may also be rotated manually.

[0024] One end of the rotating shaft 50 is connected to the rotating mechanism 40. The other end of the rotating shaft 50 is connected to an electric motor that transmits rotational force to the rotating shaft 50. The rotational force of the electric motor input to the rotating shaft 50 is input to the rotating mechanism 40 via the rotating shaft 50. The rotational force input to the rotating mechanism 40 is output to the first member 20 and the second member 30.

[0025] <First component> As shown in Figure 1, the first member 20 has a first main body portion 21 and a first engaging portion 22. The first main body portion 21 rotates about the rotation axis RA. The first main body portion 21 is formed in a cylindrical shape. For example, the first main body portion 21 is formed in a cylindrical shape extending in the axial direction of the rotation axis RA. The second member 30 is housed inside the first main body portion 21. The rotation mechanism 40 is housed inside the first main body portion 21.

[0026] The first engaging portion 22 shown in Figure 2 engages with the nut 200. The first engaging portion 22 is, for example, a nut hole into which the corners of the nut 200 fit. In this embodiment, the first engaging portion 22 is a hexagonal nut hole. The first engaging portion 22 is provided on the inner circumferential surface 23 of the first main body portion 21. The first engaging portion 22 is provided on the inner circumferential surface 23 of the first main body portion 21 at the end in the first axial direction X1. The first axial direction X1 is the direction from the fastening member operating tool 10 toward the bolt 300 in the axial direction with respect to the rotation axis RA, when the first member 20 is engaged with the nut 200 and the second member 30 is engaged with the bolt 300.

[0027] The first member 20 has a first input gear 24. The first input gear 24 is provided on the inner circumferential surface 23 of the first main body 21. The first input gear 24 is provided on the inner circumferential surface 23 of the first main body 21 on the second axial direction X2 side of the first engaging portion 22. The second axial direction X2 is opposite to the first axial direction X1 in the axial direction with respect to the rotation axis RA. The first input gear 24 engages with the seventh gear 41g of the differential gear 41 of the rotation mechanism 40, which will be described later. The first input gear 24 rotates integrally with the first main body 21 about the rotation axis RA.

[0028] The first member 20 is rotatable by the rotational force input from the rotation mechanism 40. The rotational force input to the first input gear 24 causes the first engaging portion 22 to rotate around the rotation axis RA via the first main body portion 21. The rotation of the first engaging portion 22 causes the nut 200 engaged with the first engaging portion 22 to rotate.

[0029] <Second component> As shown in Figure 2, the second member 30 has a second main body portion 31 and a second engaging portion 32. The second main body portion 31 rotates about the rotation axis RA. The second main body portion 31 is formed, for example, in an axial shape extending in the axial direction of the rotation axis RA. The second main body portion 31 connects the second input gear 35, which will be described later, to the second engaging portion 32.

[0030] The second engaging portion 32 engages with the bolt 300. Specifically, the second engaging portion 32 engages with the end of the shaft of the bolt 300 opposite to the head. The second engaging portion 32 is provided at the tip of the second main body portion 31. The tip of the second main body portion 31 to which the second engaging portion 32 is provided is the end of the second main body portion 31 in the first axial direction X1.

[0031] The second member 30 is rotatable by the rotational force input from the rotating mechanism 40. The second member 30 engages with the bolt 300 by rotation by the rotating mechanism 40. The second engaging portion 32 is configured to be screwed onto the bolt 300 by the rotation of the second main body portion 31. The second engaging portion 32 engages with the bolt 300 as it rotates and is pressed against the end of the shaft portion of the bolt 300 in the first axial direction X1.

[0032] The second engaging portion 32 has a projection 33 and a claw portion 34. The projection 33 extends from the tip of the second main body portion 31 in the first axial direction X1 with respect to the rotation axis RA. The projection 33 is formed in a needle shape that becomes thinner as it extends in the first axial direction X1. The projection 33 is configured, for example, in a conical shape. The surface of the projection 33 is threaded in a drill-like manner (not shown).

[0033] The claw portion 34 extends radially from the projection 33 with respect to the rotation axis RA and then extends in the first axial direction X1. The claw portion 34 is curved, for example, so that it extends radially from the base of the projection 33 with respect to the rotation axis RA and then extends in the first axial direction X1. In this embodiment, two claw portions 34 are provided on the projection 33. On the outer surface of the projection 33, one of the two claw portions 34 is positioned 180 degrees rotated from the other claw portion 34 with respect to the rotation axis RA.

[0034] The second member 30 has a second input gear 35. The second input gear 35 is provided at the end of the second main body 31 in the second axial direction X2 of the axial direction with respect to the rotation axis RA. The second input gear 35 engages with the 11th gear 41n of the differential gear 41 of the rotation mechanism 40, which will be described later. The second input gear 35 rotates integrally with the second main body 31 about the rotation axis RA.

[0035] <Rotation mechanism> As shown in Figure 3, the rotation direction of the first member 20 is different from that of the second member 30. In this embodiment, a rotational force is input to the rotating shaft 50 in the second circumferential direction R2. The rotating mechanism 40 transmits the rotational force of the rotating shaft 50 to the first member 20 so that the first member 20 rotates in the first circumferential direction R1 with respect to the rotation axis RA. The rotating mechanism 40 transmits the rotational force of the rotating shaft 50 to the second member 30 so that the second member 30 rotates in the second circumferential direction R2, which is opposite to the first circumferential direction R1. The first circumferential direction R1 corresponds to the rotation direction in which the nut 200 detaches from the bolt 300. In Figure 3, the rotating mechanism 40 is schematically shown by a dashed line. The rotating shaft 50 is schematically shown by a dashed line. The second input gear 35 of the second member 30 is also schematically shown.

[0036] When a rotational force is applied to the rotating shaft 50 in the first circumferential direction R1, the rotating mechanism 40 may transmit the rotational force of the rotating shaft 50 to the first member 20 so that the first member 20 rotates in the second circumferential direction R2. When a rotational force is applied to the rotating shaft 50 in the first circumferential direction R1, the rotating mechanism 40 may transmit the rotational force of the rotating shaft 50 to the second member 30 so that the second member 30 rotates in the first circumferential direction R1.

[0037] The rotating mechanism 40 shown in Figure 4 has a differential gear 41. The differential gear 41 transmits the rotational force input to the rotating shaft 50 to both the first member 20 and the second member 30, and rotates at least one of the second member 30 and the first member 20.

[0038] Referring to Figure 4, an example of the configuration of the rotating mechanism 40 as a differential gear 41 will be described. The rotating mechanism 40 is composed of multiple gears combined together. The differential gear 41 has a first gear 41a, a second gear 41b, a third gear 41c, a fourth gear 41d, a fifth gear 41e, a sixth gear 41f, a seventh gear 41g, an eighth gear 41h, a ninth gear 41k, a tenth gear 41m, and an eleventh gear 41n. Note that the configuration of the differential gear 41, such as the number of gears, the number of teeth on the gears, and the arrangement of the gears, is not limited to the structure of this embodiment.

[0039] The first gear 41a is mounted on the rotating shaft 50. In this embodiment, the first gear 41a is mounted on the outer circumferential surface 51 of the rotating shaft 50. The first gear 41a rotates integrally with the rotating shaft 50. The rotational force of the rotating shaft 50 is input from the first gear 41a to the differential gear 41. The first gear 41a is the pinion gear of the differential gear 41.

[0040] The second gear 41b rotates around a second axis A2 that intersects the first axis A1. The second axis A2 is, for example, perpendicular to the first axis A1. The second gear 41b engages with the first gear 41a. As shown in Figure 2, the second gear 41b is the ring gear of the differential gear 41. Note that in the example in Figure 4, the second gear 41b is shown in cross-section.

[0041] The third gear 41c revolves around the second axis A2 in conjunction with the rotation of the second gear 41b. Specifically, while revolving around the second axis A2, the third gear 41c rotates on a rotation axis SA that is perpendicular to the second axis A2. As the third gear 41c revolves around the second axis A2, the rotation axis SA rotates on the second axis A2. The third gear 41c is the spider gear of the differential gear 41. As shown in Figure 2, two third gears 41c are attached to the second gear 41b, which is a ring gear. Specifically, the two third gears 41c are attached to a plate-shaped portion that extends from the inside of the second gear 41b along the second axis A2.

[0042] As shown in Figure 4, the fourth gear 41d rotates about the second axis A2. The fourth gear 41d engages with the third gear 41c. The fourth gear 41d is the first side gear of the differential gear 41.

[0043] The fifth gear 41e rotates integrally with the fourth gear 41d about the second axis A2. The fifth gear 41e is connected to the fourth gear 41d, for example, via a first shaft portion 42 that extends along the second axis A2. The fourth gear 41d is provided at one end of the first shaft portion 42. The fifth gear 41e is provided at the other end of the first shaft portion 42.

[0044] The sixth gear 41f rotates about a third axis A3 parallel to the rotation axis RA. The third axis A3 intersects, for example, the second axis A2. The third axis A3 is perpendicular to, for example, the second axis A2. The sixth gear 41f engages with the fifth gear 41e.

[0045] The seventh gear 41g rotates integrally with the sixth gear 41f around the third axis A3. The seventh gear 41g is connected to the sixth gear 41f via, for example, a second shaft portion 43 that extends along the third axis A3. The sixth gear 41f is provided at one end of the second shaft portion 43. The seventh gear 41g is provided at the other end of the second shaft portion 43. The seventh gear 41g is positioned closer to the second axial direction X2 than the sixth gear 41f.

[0046] The eighth gear 41h rotates about the second axis A2. The eighth gear 41h engages with the third gear 41c. The eighth gear 41h is the second side gear of the differential gear 41.

[0047] The ninth gear 41k rotates integrally with the eighth gear 41h around the second axis A2. The ninth gear 41k is connected to the eighth gear 41h, for example, via a third shaft portion 44 that extends along the second axis A2. The eighth gear 41h is provided at one end of the third shaft portion 44. The ninth gear 41k is provided at the other end of the third shaft portion 44.

[0048] The tenth gear 41m rotates about a fourth axis A4 parallel to the rotation axis RA. The fourth axis A4 intersects, for example, the second axis A2. The fourth axis A4 is perpendicular to, for example, the second axis A2. The tenth gear 41m engages with the ninth gear 41k.

[0049] The 11th gear 41n rotates integrally with the 10th gear 41m around the 4th axis A4. The 11th gear 41n is connected to the 10th gear 41m, for example, via a 4th shaft portion 45 that extends along the 4th axis A4. The 10th gear 41m is provided at one end of the 4th shaft portion 45. The 11th gear 41n is provided at the other end of the 4th shaft portion 45. The 11th gear 41n is positioned closer to the 1st axial direction X1 than the 10th gear 41m.

[0050] The rotational force input to the rotating shaft 50 is output by the rotating mechanism 40, which is a differential gear 41, from the 7th gear 41g and the 11th gear 41n, respectively. As a first rotational force transmission path, the rotational force input to the rotating shaft 50 is output to the first input gear 24 of the first member 20 via the 1st gear 41a, 2nd gear 41b, 3rd gear 41c, 4th gear 41d, 5th gear 41e, 6th gear 41f, and 7th gear 41g. As a second rotational force transmission path, the rotational force input to the rotating shaft 50 is output to the second input gear 35 of the second member 30 via the 1st gear 41a, 2nd gear 41b, 3rd gear 41c, 8th gear 41h, 9th gear 41k, 10th gear 41m, and 11th gear 41n.

[0051] The rotating mechanism 40 is mounted inside the first main body 21 of the first member 20 by a support member (not shown). The rotating mechanism 40 is movable in the axial direction of the rotation axis RA relative to the first member 20. The width of the first input gear 24 of the first member 20 in the axial direction of the rotation axis RA is set to a width such that the seventh gear 41g continues to engage with the first input gear 24 even when the rotating mechanism 40 moves axially relative to the first member 20. When the rotating mechanism 40 moves in the axial direction of the rotation axis RA relative to the first member 20, the second member 30 and the rotating shaft 50 move together with the rotating mechanism 40.

[0052] <Work method using fastening member manipulation tools> The method of operation using the fastening member operating tool 10 will be explained with reference to Figures 5 to 8. In Figures 5 to 8, the fastening member operating tool 10 has been adjusted so that the length of the first engagement portion 22 of the first member 20 in the axial direction matches the length of the shaft portion of the bolt 300. In Figures 5 to 8, the first member 20, the second member 30, and the rotating mechanism 40 are schematically shown.

[0053] This explanation illustrates, as an example, a method for loosening a nut 200 fastened to a bolt 300. The nut 200 and bolt 300 secure the first steel member 400 and the second steel member 500. The work performed with the fastening member operating tool 10 is carried out in the space on the nut 200 side of the first steel member 400 and the second steel member 500. The method of working with the fastening member operating tool 10 includes a first step, a second step, and a third step.

[0054] As shown in Figure 5, in the first step, the first member 20 is engaged with the nut 200. Specifically, the first engaging portion 22 engages with the nut 200 by inserting the nut 200 into the nut hole of the first engaging portion 22.

[0055] As shown in Figure 6, in the second step, the second member 30 is engaged with the bolt 300. Specifically, the second engaging portion 32 is engaged with the shaft of the bolt 300 by rotation. In the second step, the second member 30 and the rotating mechanism 40 are pushed in the first axial direction X1, while the rotating shaft 50 is rotated in the second circumferential direction R2. The rotational force of the rotating shaft 50 is transmitted to the second member 30, causing the second member 30 to rotate in the second circumferential direction R2. As a result, the second engaging portion 32 of the second member 30 is screwed onto the bolt 300.

[0056] In the second step, the first member 20 is engaged with the nut 200, making it difficult for the first member 20 to rotate. Since the second member 30 rotates more easily than the first member 20, the differential gear 41 of the rotation mechanism 40 receives a reaction force from the first member 20 due to the rotation of the second member 30, causing the second member 30 to rotate in the second circumferential direction R2.

[0057] As shown in Figure 7, in the third step, the rotating shaft 50 is rotated in the second circumferential direction R2, continuing from the second step. The rotation of the second member 30 stops when the second engaging portion 32 of the second member 30 is fixed to the bolt 300. As a result, the first member 20 becomes easier to rotate than the second member 30, and the differential gear 41 of the rotating mechanism 40 receives a reaction force from the rotation of the first member 20 by the second member 30, causing the first member 20 to rotate in the first circumferential direction R1.

[0058] As shown in Figure 8, in the third step, the first member 20 rotates in the first circumferential direction R1 by continuing to rotate the rotation axis 50 in the second circumferential direction R2. As the first member 20 rotates, the nut 200 rotates relative to the bolt 300, loosening the fastening between the nut 200 and the bolt 300. As a result, the nut 200 moves in the second axial direction X2 within the first engagement portion 22 of the first member 20.

[0059] <Operation of this embodiment> The operation of this embodiment will now be explained. In the operation of rotating a nut 200 on a bolt 300, for objects to be fixed, such as the first steel member 400 and the second steel member 500 in Figure 5, it was necessary to fix the bolt 300 from the space on the head side of the bolt 300 while rotating the nut 200 in the space on the nut 200 side. For this reason, a special tool was proposed that uses a groove pre-cut into the shaft of the bolt 300 to suppress the rotation of the bolt 300 while rotating the nut 200, allowing work to be done in the space on the nut 200 side.

[0060] In the fastening member operating tool 10, the second member 30 engages with the bolt 300 by rotation by the rotation mechanism 40. Therefore, even if there is no groove on the shaft of the bolt 300, the second member 30 can be engaged with the bolt 300.

[0061] <Effects of this embodiment> The effects of this embodiment will now be explained. (1) The fastening member operating tool 10 is used to tighten the nut 200 and the bolt 300, or to loosen the fastening of the nut 200 and the bolt 300. The fastening member operating tool 10 comprises a first member 20 that engages with the nut 200, a second member 30 that engages with the bolt 300, and a rotating mechanism 40. The rotating mechanism 40 can rotate the second member 30 about the rotation axis RA without rotating the first member 20. The rotating mechanism 40 can rotate the first member 20 about the rotation axis RA without rotating the second member 30. The second member 30 engages with the bolt 300 by rotation by the rotating mechanism 40.

[0062] With this configuration, the second member 30 engages with the bolt 300 through rotation by the rotating mechanism 40, making it easier to engage the second member 30 with the bolt 300. This effectively suppresses the co-rotation of the bolt 300 with the rotation of the nut 200.

[0063] (2) The fastening member operating tool 10 further comprises a rotating shaft 50 that rotates about the first axis A1. The rotating mechanism 40 transmits the rotational force of the rotating shaft 50 to the first member 20 so that the first member 20 rotates in the first circumferential direction R1 with respect to the rotation axis RA. The rotating mechanism 40 transmits the rotational force of the rotating shaft 50 to the second member 30 so that the second member 30 rotates in the second circumferential direction R2, which is opposite to the first circumferential direction R1.

[0064] With this configuration, the rotational force of the rotating shaft 50 can be transmitted to both the first member 20 and the second member 30 by the rotating mechanism 40.

[0065] (3) The rotating mechanism 40 has a differential gear 41. The differential gear 41 has a first gear 41a, a second gear 41b, a third gear 41c, a fourth gear 41d, a fifth gear 41e, a sixth gear 41f, a seventh gear 41g, an eighth gear 41h, a ninth gear 41k, a tenth gear 41m, and an eleventh gear 41n. The first gear 41a is mounted on the rotating shaft 50. The second gear 41b rotates around a second axis A2 that intersects with the first axis A1 and engages with the first gear 41a. The third gear 41c revolves around the second axis A2 in conjunction with the rotation of the second gear 41b. The fourth gear 41d rotates around the second axis A2 and engages with the third gear 41c. The fifth gear 41e rotates integrally with the fourth gear 41d about the second axis A2. The sixth gear 41f rotates about the third axis A3, which is parallel to the rotation axis RA, and engages with the fifth gear 41e. The seventh gear 41g rotates integrally with the sixth gear 41f about the third axis A3. The eighth gear 41h rotates about the second axis A2 and engages with the third gear 41c. The ninth gear 41k rotates integrally with the eighth gear 41h about the second axis A2. The tenth gear 41m rotates about the fourth axis A4, which is parallel to the rotation axis RA, and engages with the ninth gear 41k. The eleventh gear 41n rotates integrally with the tenth gear 41m about the fourth axis A4. The first member 20 has a first input gear 24 that engages with the seventh gear 41g. The second member 30 has a second input gear 35 that engages with the 11th gear 41n.

[0066] With this configuration, the rotational force of the rotating shaft 50 can be transmitted by the differential gear 41 to the first member 20 via the seventh gear 41g and to the second member 30 via the eleventh gear 41n.

[0067] (4) The first member 20 has a first main body portion 21 that rotates about the rotation axis RA and a first engaging portion 22 that engages with the nut 200. The first main body portion 21 is formed in a cylindrical shape. The first engaging portion 22 is provided on the inner circumferential surface 23 of the first main body portion 21.

[0068] With this configuration, since the first engaging portion 22 is provided on the inner circumferential surface 23 of the cylindrical first main body portion 21, the first engaging portion 22 can easily engage with the corner of the nut 200.

[0069] (5) The rotating mechanism 40 is housed inside the first main body 21. With this configuration, the rotating mechanism 40 is housed inside the cylindrical first main body 21, making it easy to handle the fastening member operating tool 10.

[0070] (6) The second member 30 has a second main body 31 that rotates about the rotation axis RA and a second engaging portion 32 that engages with the bolt 300. The second engaging portion 32 is provided at the tip of the second main body 31 and is configured to be screwed onto the bolt 300 by the rotation of the second main body 31.

[0071] With this configuration, the second engaging portion 32 engages with the bolt 300 by being screwed onto the bolt 300, so there is no need to provide the bolt 300 with any engaging structures such as holes or grooves beforehand.

[0072] (7) The second engaging portion 32 has a projection 33 extending from the tip of the second main body portion 31 in the first axial direction X1 in the axial direction with respect to the rotation axis RA, and a claw portion 34 extending radially from the projection 33 with respect to the rotation axis RA and in the first axial direction X1.

[0073] In this configuration, when the second engaging portion 32 engages with the bolt 300, the projection 33 and the claw portion 34 pierce the bolt 300. The claw portion 34 prevents the second member 30 from spinning freely relative to the bolt 300.

[0074] <Variation> The above embodiment is an example of possible forms of the fastening member operating tool 10 and is not intended to limit its form. The fastening member operating tool 10 may take a form different from the one exemplified in the above embodiment. Examples include forms in which some of the configurations of the embodiment are replaced, modified, or omitted, or forms in which new configurations are added to the embodiment. Modifications of the embodiment are shown below.

[0075] In this embodiment, a method for loosening the fastening between the nut 200 and the bolt 300 is illustrated, but the fastening member operating tool 10 may also be used when tightening the nut 200 onto the bolt 300. In this modified example, the nut 200 is tightened onto the bolt 300 by the first member 20 rotating in the first circumferential direction R1.

[0076] The second member 30 may engage with the bolt 300 by, for example, a screw structure. In this modified example, for example, a male thread is cut into the second engaging portion 32 of the second member 30, and a female thread is cut into the shaft portion of the bolt 300. In this modified example, the second circumferential direction R2 corresponds to the direction in which the screw structure of the second member 30 and the bolt 300 engages. By engaging by the screw structure, even if the second member 30 is removed from the bolt 300 after the nut 200 has been rotated relative to the bolt 300, the bolt 300 can still be used.

[0077] The first axis A1 on which the rotating shaft 50 rotates may be parallel to or intersect with the rotation axis RA. If the first axis A1 intersects with the rotation axis RA, the rotating shaft 50 may be positioned to intersect with the second main body portion 31 of the second member 30.

[0078] In this embodiment, the first main body portion 21 of the first member 20 was formed in a cylindrical shape, but the first main body portion 21 does not have to be cylindrical as long as the first engaging portion 22 can engage with the nut 200. For example, the first main body portion 21 may be formed in a box shape that houses the rotating mechanism 40. In this modified example, the first main body portion 21 does not rotate, and the first engaging portion 22 may be directly connected to the first input gear 24.

[0079] The rotating mechanism 40 may be provided outside the first main body portion 21 of the first member 20. In this modified example, a housing portion for housing the rotating mechanism 40 may be provided separately from the first member 20 and the second member 30.

[0080] In the second member 30, the shape of the second main body 31 is not limited to an axial shape, as long as the rotation of the second input gear 35 can be transmitted to the second engagement portion 32. The second engagement portion 32 may be directly fixed to the second input gear 35.

[0081] Either the projection 33 or the claw portion 34 may be omitted from the second engaging portion 32 of the second member 30. In the embodiment, the projection 33 was conical, but if the claw portion 34 is omitted from the second engaging portion 32, the projection 33 may be configured in a pyramidal shape.

[0082] This specification discloses the following technologies: [Note 1] A fastening member operating tool for tightening a nut and a bolt, or loosening the fastening of a nut and a bolt, comprising: a first member that engages with the nut; a second member that engages with the bolt; and a rotating mechanism that can rotate the second member about a rotation axis without rotating the first member, and can rotate the first member about the rotation axis without rotating the second member, wherein the second member engages with the bolt by rotation by the rotating mechanism.

[0083] [Note 2] The fastening member operating tool according to Appendix 1, further comprising a rotating shaft that rotates about a first axis, wherein the rotating mechanism transmits the rotational force of the rotating shaft to the first member so that the first member rotates in a first circumferential direction among the circumferential directions with respect to the rotating axis, and transmits the rotational force of the rotating shaft to the second member so that the second member rotates in a second circumferential direction opposite to the first circumferential direction.

[0084] [Note 3] The rotation mechanism has a differential gear, the differential gear has a first gear provided on the rotation shaft, a second gear that rotates around a second axis intersecting the first axis and engages with the first gear, a third gear that revolves around the second axis in conjunction with the rotation of the second gear, a fourth gear that rotates around the second axis and engages with the third gear, a fifth gear that rotates integrally with the fourth gear around the second axis, a sixth gear that rotates around a third axis parallel to the rotation axis and engages with the fifth gear, and the third axis The fastening member operating tool according to Appendix 2, comprising: a seventh gear that rotates integrally with the sixth gear as its center; an eighth gear that rotates about the second axis and engages with the third gear; a ninth gear that rotates integrally with the eighth gear about the second axis; a tenth gear that rotates about a fourth axis parallel to the axis of rotation and engages with the ninth gear; and an eleventh gear that rotates integrally with the tenth gear about the fourth axis, wherein the first member has a first input gear that engages with the seventh gear, and the second member has a second input gear that engages with the eleventh gear.

[0085] [Note 4] The fastening member operating tool described in Appendix 1, wherein the first member comprises a first main body that rotates about the rotation axis and a first engaging portion that engages with the nut, the first main body is formed in a cylindrical shape, and the first engaging portion is provided on the inner circumferential surface of the first main body.

[0086] [Note 5] The rotating mechanism is a fastening member operating tool as described in Appendix 4, housed inside the first main body.

[0087] [Note 6] The fastening member operating tool according to any one of the appendices 1 to 5, wherein the second member comprises a second main body that rotates about the rotation axis and a second engaging portion that engages with the bolt, the second engaging portion being provided at the tip of the second main body and configured to be screwed onto the bolt by the rotation of the second main body.

[0088] [Note 7] The fastening member operating tool as described in Appendix 6, wherein the second engaging portion has a projection extending from the tip of the second main body in the first axial direction among the axial directions with respect to the rotation axis, and a claw extending from the projection in the radial direction with respect to the rotation axis and extending in the first axial direction. [Explanation of symbols]

[0089] 10... Fastening member operating tool, 20... First member, 21... First main body, 22... First engaging part, 23... Inner circumferential surface, 24... First input gear, 30... Second member, 31... Second main body, 32... Second engaging part, 33... Projection, 34... Claw part, 35... Second input gear, 40... Rotation mechanism, 41... Differential gear, 41a... First gear, 41b... Second gear, 41c... Third gear, 41d... Fourth gear, 41e... Fifth gear, 41f... Sixth gear, 41g... Seventh gear, 41h... Eighth gear, 41k... Ninth gear, 41m... Tenth gear, 41n... Eleventh gear, 50... Rotating shaft, 51... Outer circumferential surface, 200... Nut, 300... Bolt.

Claims

1. A fastening member operating tool for tightening a nut and a bolt, or for loosening the fastening between the nut and the bolt, A first member that engages with the nut, A second member that engages with the bolt, A rotation mechanism that allows the second member to be rotated about the axis of rotation without rotating the first member, and allows the first member to be rotated about the axis of rotation without rotating the second member, It comprises a rotating shaft that rotates about a first axis, The aforementioned rotating mechanism is The rotational force of the rotation axis is transmitted to the first member so that the first member rotates in a first circumferential direction among the circumferential directions with respect to the rotation axis. The rotational force of the rotating shaft is transmitted to the second member so that the second member rotates in a second circumferential direction opposite to the first circumferential direction. The aforementioned rotating mechanism has a differential gear, The aforementioned differential gear is A first gear provided on the aforementioned rotating shaft, A second gear rotates about a second axis that intersects the first axis and engages with the first gear, A third gear revolves around the second axis as the second gear rotates, A fourth gear rotates about the second axis and engages with the third gear, A fifth gear that rotates integrally with the fourth gear around the second axis, A sixth gear rotates about a third axis parallel to the aforementioned axis of rotation and engages with the fifth gear, A seventh gear that rotates integrally with the sixth gear around the third axis, An eighth gear that rotates about the second axis and engages with the third gear, A ninth gear that rotates integrally with the eighth gear around the second axis, A tenth gear rotates about a fourth axis parallel to the aforementioned axis of rotation and engages with the ninth gear, It has an eleventh gear that rotates integrally with the tenth gear about the fourth axis, The first member has a first input gear that engages with the seventh gear, The second member has a second input gear that engages with the eleventh gear, The second member engages with the bolt by being pushed in the first axial direction among the axial directions related to the rotation axis via the rotation mechanism and rotating due to the rotational force of the rotation mechanism. Fastening component manipulation tool.

2. A fastening member operating tool for tightening a nut and a bolt, or for loosening the fastening between the nut and the bolt, A first member that engages with the nut, A second member that engages with the bolt, The device comprises a rotation mechanism that allows the second member to be rotated about the axis of rotation without rotating the first member, and allows the first member to be rotated about the axis of rotation without rotating the second member, The first member is, A first main body that rotates about the aforementioned axis of rotation, It has a first engaging portion that engages with the nut, The first main body is formed in a cylindrical shape, The first engaging portion is provided on the inner circumferential surface of the first main body, The rotating mechanism is housed inside the first main body, The second member engages with the bolt by being pushed in the first axial direction among the axial directions related to the rotation axis via the rotation mechanism and rotating due to the rotational force of the rotation mechanism. Fastening component manipulation tool.

3. A fastening member operating tool for tightening a nut and a bolt, or for loosening the fastening between the nut and the bolt, A first member that engages with the nut, A second member that engages with the bolt, The device comprises a rotation mechanism that allows the second member to be rotated about the axis of rotation without rotating the first member, and allows the first member to be rotated about the axis of rotation without rotating the second member, The second member is, A second main body that rotates about the aforementioned axis of rotation, It has a second engaging portion that engages with the bolt, The second engagement portion is, It is configured to be screwed onto the bolt by the rotation of the second main body, and is provided at the tip of the second main body, Furthermore, a projection extends from the tip of the second main body in the first axial direction among the axial directions relating to the rotation axis, The projection extends radially from the rotation axis and has a claw portion extending in the first axial direction, The second engaging portion of the second member engages with the bolt when the second member is pushed in the first axial direction via the rotating mechanism and rotated by the rotational force of the rotating mechanism. Fastening component manipulation tool.

4. The first member is, A first main body that rotates about the aforementioned axis of rotation, It has a first engaging portion that engages with the nut, The first main body is formed in a cylindrical shape, The first engaging portion is provided on the inner circumferential surface of the first main body, The fastening member operating tool according to claim 3.

5. The rotation mechanism is housed inside the first main body. The fastening member operating tool according to claim 4.

6. It further includes a rotating shaft that rotates around the first axis, The aforementioned rotating mechanism is The rotational force of the rotation axis is transmitted to the first member so that the first member rotates in a first circumferential direction among the circumferential directions with respect to the rotation axis. The rotational force of the rotating shaft is transmitted to the second member so that the second member rotates in a second circumferential direction opposite to the first circumferential direction. A fastening member operating tool according to any one of claims 2 to 5.

7. The aforementioned rotating mechanism has a differential gear, The aforementioned differential gear is A first gear provided on the aforementioned rotating shaft, A second gear rotates about a second axis that intersects the first axis and engages with the first gear, A third gear revolves around the second axis as the second gear rotates, A fourth gear rotates about the second axis and engages with the third gear, A fifth gear that rotates integrally with the fourth gear around the second axis, A sixth gear rotates about a third axis parallel to the aforementioned axis of rotation and engages with the fifth gear, A seventh gear that rotates integrally with the sixth gear around the third axis, An eighth gear that rotates about the second axis and engages with the third gear, A ninth gear that rotates integrally with the eighth gear around the second axis, A tenth gear rotates about a fourth axis parallel to the aforementioned axis of rotation and engages with the ninth gear, It has an eleventh gear that rotates integrally with the tenth gear about the fourth axis, The first member has a first input gear that engages with the seventh gear, The second member has a second input gear that engages with the eleventh gear. The fastening member operating tool according to claim 6.

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