JP2005279800A - Adapter for ratchet handle and rotation assisting tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adapter for a ratchet handle and a rotation assisting tool having excellent workability and inexpensive by appropriating general-purpose articles of a ratchet handle to fit various kinds of sockets without falling, so that a rotation object such as a bolt can be rotated without consideration of falling of the socket. <P>SOLUTION: This adapter 20 is fitted to an engagement part 11 of the ratchet handle 10. The adapter includes: a penetrating part 21 penetrating the engagement part 11; a connecting part 22 connected to the engagement part 11 not to rotate relatively; a storing part 23 in which the head of an eye bolt as the rotation object is mounted in the interior of the storing hole 23a and engaged not to rotate relatively; and a locking part 24 locked on the engagement part 11 of the ratchet handle 10 not to be pulled out on the opposite side to the storing part 23, wherein the respective parts 21 to 24 are unseparably connected to each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a ratchet handle adapter and a rotation assisting tool, and more particularly to a ratchet handle that allows one end portion of a ratchet handle to be engaged with a rotation target such as a bolt without relative rotation without fear of dropping.

  2. Description of the Related Art Conventionally, members that can be tightened or released by rotating such as bolts are known, and in order to reduce the work load of rotating such a rotating object, forward and reverse A ratchet handle that can restrict rotation in one direction while allowing rotation in only one direction has been used. This ratchet handle has one end engaged with a bolt or the like so as not to rotate relative to one another, and rotates in one direction with respect to the rotation of the handle while rotating together in the opposite direction. Even in places where there is no space, bolts can be tightened and released easily. In general, the ratchet handle is manufactured to have a structure capable of switching a direction in which rotation of one end of the ratchet handle is allowed / restricted.

  As this type of ratchet handle, there is a ratchet handle having a male-female structure in which one end portion thereof and a socket in which various engagement holes are formed can be attached to and detached from each other. In this case, it is designed so that the ball point provided on one side and floating up and down does not easily come off by engaging with a groove hole or the like carved on the other side. For example, in the device such as the transformer 100 shown in FIG. 10, the eyebolt 102 for tightening the lid 101 has a deformed head portion 102a, and it is necessary to rotate the head portion 102a and screw the screw portion 102b. For this reason, this ratchet handle is devised so that a socket in which an engagement hole for receiving and engaging the head portion 102a of the eyebolt 102 is formed can be attached (for example, see Patent Document 1).

In addition, there is a ratchet handle having an engagement hole that can be engaged with two different sizes of bolts at one end thereof. In this case, since the object to be rotated is limited, it can be connected to the engagement hole of the ratchet handle, and various types of sockets having engagement holes to be engaged with the object to be rotated can be attached. It has been proposed to use an intermediate member. Also in this case, as described in the above-mentioned document 1, it is designed so that one ball point is not easily detached by engaging with the other slot or the like (for example, patent document) 2).
JP-A-8-323635 Japanese Utility Model Publication 7-18530

  However, in such a conventional ratchet handle, holding a replaceable socket in any case is a ball point that can be raised and lowered, and thus lacks reliability.

  Here, when tightening or releasing the bolts of equipment such as a transformer installed on a high-voltage charging circuit such as on a power pole, work close to the high-voltage charging part while charging the high-voltage circuit. There are things to do. In this case, it is stipulated that the work should be performed while wearing an insulating protective device having insulation properties, but in order to ensure the safety of the worker, the work of rotating the bolt from a remote position is performed. Is more desirable. At this time, the ratchet handle is not at hand, and there may be pedestrians, houses, parked vehicles, etc. that pass under the power pole, and contact with the high-voltage charger due to dropping of the socket from the ratchet handle. There is also a risk of damage. For this reason, it is necessary to ensure safety so that the socket is not dropped. For example, it is necessary to take measures such as waiting for a pedestrian or the like to pass, or attaching an armor for insulation to a high-voltage charging part such as a device, and there is a problem that workability and work efficiency are remarkably poor.

  In addition, a large-scale apparatus configuration only increases the cost and is inferior in usability. Therefore, it is necessary to realize a configuration in which various types of sockets can be securely attached so that various types of rotation objects can be rotated with an inexpensive configuration.

  Accordingly, the present invention realizes that various types of sockets are mounted so as not to be dropped by diverting a general-purpose ratchet handle, so that a rotating object such as a bolt can be rotated without considering the drop of the socket. An object of the present invention is to provide an inexpensive ratchet handle adapter and rotation assisting tool that are excellent in workability.

  1st invention of the ratchet handle adapter which solves the above-mentioned subject is a ratchet handle adapter attached to the engagement hole engaged with the rotation object of the ratchet handle, and penetrates the engagement hole communicating with the front and back of the ratchet handle A connecting part connected to one end of the engaging part of the ratchet handle and one of the front side or the back side of the ratchet handle, and connected to one end part of the penetrating part that cannot be pulled out toward the other side and cannot be relatively rotated. A connecting portion that is connected to the connecting portion and engages with a rotating object, and that the connecting portion is connected to one of the front side and the back side of the engaging hole of the ratchet handle. A locking portion connected to the other end of the penetrating portion for locking the other end of the portion to the other side of the engaging hole, and the penetrating portion, the connecting portion, the engaging portion, and the engaging portion. Stops cannot be separated during work It is characterized in that the.

  In this invention, the connecting portion is connected by passing the through portion through the engaging hole of the ratchet handle, and the engaging portion connected to the connecting portion is pulled out only by locking the engaging portion on the opposite side. It can be mounted incapable of relative rotation. Therefore, by simply using the general-purpose ratchet handle and replacing the adapter, you can rotate and rotate the bolts and other rotating objects without worrying about the various sockets and other engaging parts falling. Etc. can be performed.

  The second invention of the ratchet handle adapter that solves the above-described problems is that, in addition to the specific matter of the first invention, the locking portion can penetrate through the engagement hole of the ratchet handle as the tip side of the penetration portion. It has a structure that changes its outer shape from a shape to a shape that cannot be re-entered into the engagement hole, and is formed as a single component that cannot be separated together with the through portion, the coupling portion, and the engagement portion. is there.

  In the present invention, the locking portion is continuously connected to the engaging portion so as not to be separated, and the locking portion cannot be re-entered into the engaging hole of the ratchet handle by deforming the outer shape, and the engaging portion can be prevented. The joint hole can be sandwiched between the connecting portion on the opposite side so that it cannot be pulled out in any direction. Therefore, the adapter can be exchanged and attached so that the adapter does not fall into the engagement hole of the ratchet handle of a general-purpose product by simply passing the engaging portion through the engagement hole of the ratchet handle and changing the outer shape.

  According to a third invention of the ratchet handle adapter for solving the above-mentioned problems, in addition to the specific matter of the first invention, the penetration portion and the locking portion are formed as a single component that cannot be separated, and the connection portion and the engagement portion. An engaging portion and an engaging portion that cannot be inserted into the engaging hole by coupling the connecting portion and the penetrating portion that penetrates the engaging hole of the ratchet handle, and the joining portion is formed as one part that cannot be separated. Is attached so that it cannot be pulled out from the engagement hole.

  In this invention, the engaging part and the engaging part cannot enter the engaging hole of the ratchet handle by penetrating the leading end of the penetrating part into the engaging hole of the ratchet handle and coupling the connecting part to the leading end part. Thus, it can be sandwiched in any direction so as not to be pulled out. Therefore, it is possible to replace and attach the adapter so that the adapter does not fall into the engagement hole of the general-purpose ratchet handle simply by passing the penetration part into the engagement hole of the ratchet handle and coupling it to the connecting part.

  According to a fourth invention of the ratchet handle adapter for solving the above-mentioned problems, in addition to the specific matters of the first to third inventions, the engagement portion has a socket shape for receiving the head of the eyebolt in a non-rotatable manner. It is characterized by being formed.

  According to the present invention, the head of the eyebolt can be accommodated in the socket-shaped engagement portion that is attached to one side of the front and back of the engagement hole of the ratchet handle so as not to be relatively rotatable, and can be engaged in a relatively non-rotatable manner. . Therefore, by rotating the ratchet handle in a direction in which the engagement hole cannot rotate, the eyebolt can be rotated and tightened and released.

  A first invention of a rotation assisting tool that solves the above-described problem is a rotation assisting tool that assists in tightening / releasing work of a rotation target of a device installed at a remote position, and is any one of the first to fourth aspects described above. A ratchet handle in which the ratchet handle adapter according to the invention is attached to one end, and an insulating rod attached to the tip end of a pivot shaft that pivotally supports the other end of the ratchet handle. It is a feature.

  In this invention, by attaching the adapter to the engagement hole of the ratchet handle attached to the tip of the insulating rod, the adapter can be engaged with the object to be rotated from a remote position without worrying about the adapter falling. The rotation object can be rotated by engaging the parts. Therefore, for example, when an adapter having a socket-shaped engagement portion that can be swung and rotated with an eyebolt is attached, after loosening the eyebolt that attaches a lid such as a transformer installed at a high place and inspecting the inside The operation of tightening the eyebolts can be easily performed.

  According to the present invention, it is possible to attach the adapter including the engaging portion engaged with the rotation target to the engaging hole of the general-purpose ratchet handle without dropping, for example, by attaching the adapter to the tip end portion of the insulating rod. When working at a remote location, the work can be performed without taking excessive measures such as waiting for a pedestrian to pass. Therefore, workability can be improved at a low cost.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best embodiment of the invention will be described with reference to the drawings. 1-8 is a figure which shows one Embodiment of the rotation assistance tool provided with the ratchet handle which set the adapter based on this invention.

  In FIG. 1, the rotation assist tool includes a ratchet handle 10 that rotates a rotation target such as a bolt only in one direction, the ratchet handle adapter 20 that is attached to one end of the ratchet handle 10, and the other end of the ratchet handle 10. A connecting member 30 that pivotally supports the portion, and an insulating rod 40 to which the connecting member 30 is attached at the tip. As shown in FIGS. 10 and 11, this rotation assisting tool tightens and releases the eyebolt (rotation target) 102 when opening and closing the lid 101 of the transformer 100 installed at a high place (remote position) such as a utility pole. Assist with work.

  The ratchet handle 10 is a general-purpose product as shown in FIG. 2, and is an engagement portion 11 that protrudes from the front and back of one end portion and is rotatably supported, and a switching lever that switches the rotation direction allowed by the engagement portion 11. 12, a changing portion 13 that changes the vertical direction of the engaging portion 11, and a connecting hole 14 that is rotatably connected to the connecting member 30 at the other end.

  The engaging portion 11 is provided with engaging holes 11a and 11b that engage with two different sizes of bolts on the front and back sides of the ratchet handle 10 and engage with each other in a non-rotatable manner. , It penetrates the front and back. The switching lever 12 is built in one end portion so as to cooperate with a ratchet claw (not shown) that restricts the rotation direction of the engaging portion 11 to only one direction. The direction for locking the rotation of the link is switched to one of the forward and reverse directions.

  The changing portion 13 is fixed to one end portion of the ratchet handle 10 and extends toward the other end portion, and a holding portion 13b that rotatably holds the changing rod 13a inserted therein. A fixing screw 13c for fixing and fixing the rotation of the changing rod 13a inserted into the holding portion 13b, and by rotating the changing rod 13a in the holding portion 13b and fixing it with the fixing screw 13c. The engaging portion 11 of the ratchet handle 10 can be fixed by being switched up and down, and it can be selected which of the engaging holes 11a and 11b is used downward. The connecting hole 14 penetrates a rotation shaft 31 of a connecting member 30 described later through the other end of the holding portion 13b of the changing portion 13 so as to be relatively rotatable.

  As shown in FIG. 3, the ratchet handle adapter 20 (hereinafter also simply referred to as the adapter 20) includes a through portion 21 that penetrates into the engagement holes 11 a and 11 b of the engagement portion 11 of the ratchet handle 10, and this penetration A connecting portion 22 that is connected to one end of the portion 21 and can be engaged with the engaging hole 11b in a relatively non-rotatable manner, and a head portion 102a of the eyebolt 102 that is connected to the connecting portion 22 and is relatively A receiving portion (engagement portion) 23 that engages in a non-rotatable manner, a locking portion 24 that is connected to the other end portion of the penetrating portion 21 and is locked at the front side end surface of the engagement hole 11a so as not to be pulled out; The through portion 21, the connecting portion 22, the receiving portion 23, and the locking portion 24 are formed into parts by welding and the like so as not to be separated.

  The penetrating portion 21 is set so as to be the length of the engaging holes 11a and 11b of the ratchet handle 10 together with the connecting portion 22, and is locked in a state where the connecting portion 22 is engaged with the engaging hole 11b. The length is set such that the portion 24 is exposed from the front side of the engagement hole 11a. The coupling portion 22 is formed in a nut shape that is accommodated in the engagement hole 11b of the ratchet handle 10, and after passing through the through portion 21, the coupling portion 22 is accommodated and connected in the engagement hole 11b. It can be engaged non-rotatably. The receiving portion 23 is formed in a socket shape that can receive the head portion 102a of the eyebolt 102, and the head portion 102a of the eyebolt 102 is received in the receiving hole 23a so that the head portion 102a is not relatively rotatable. . The locking portion 24 is formed in a structure that protrudes from the extended surface of the outer surface of the through portion 21 by being slid so as to be shifted in a direction orthogonal to the extending direction of the other end portion of the through portion 21.

  That is, as shown in FIG. 4A, the adapter 20 allows the engaging portion 24 to pass through the engaging holes 11a and 11b of the ratchet handle 10 together with the penetrating portion 21, and connects the connecting portion 22 to the engaging hole 11b. 4B, as shown in FIG. 4 (b), by simply sliding the engaging portion 24 exposed from the front side of the engaging hole 11a, the outer shape continuous to the penetrating portion 21 is deformed and locked. Can be made. In other words, the locking portion 24 can be made inaccessible again (so as not to return) into the engagement hole 11a by displacing with respect to the distal end portion of the penetration portion 21, and the front side of the engagement hole 11a. It can be locked to the end face so that it cannot be pulled out. In this state, the adapter 20 can not be pulled out (cannot be dropped) in either the front or back direction by sandwiching the engaging portion 11 of the ratchet handle 10 between the receiving portion 23 and the locking portion 24. Thus, it is possible to maintain a state in which the connecting portion 22 is connected and engaged with the engaging hole 11b so as not to be relatively rotatable. Thereby, by rotating the ratchet handle 10 around one end, the eyebolt 102 in which the head 102a is housed in the housing 23 so as not to be relatively rotatable can be rotated. In addition, this adapter 20 can respond | correspond to a different rotation object only by replacing | exchanging what is attached to the ratchet handle 10, by preparing various things to which the collection part 23 for every rotation object is fixed.

  Here, the locking portion 24 of the adapter 20 is attached to the distal end portion of the penetrating portion 21 by a connecting structure 60 shown in FIGS. 5 and 6. On the side of the penetrating portion 21 of the connection structure 60, a connection pin 62 fixed in an attachment hole 61 drilled in the distal end surface, and an exterior of the connection pin 62 in the attachment hole 61 and upward. A spring 63 for applying an elastic force and two slide ribs 64 which are engraved on the front end surface and extend in the sliding direction of the locking portion 24 are provided. On the other hand, on the locking portion 24 side, a long hole 65 that penetrates the body portion of the connecting pin 62 on the penetrating portion 21 side up and down and extends in the sliding direction is formed on the upper surface side of the long hole 65. And the two sliding grooves 67 extending in the sliding direction so as to allow relative movement by engaging with the slide rib 64 on the penetrating portion 21 side.

  The connecting pin 62 of the connecting structure 60 has a large-diameter portion 62a formed at the tip portion to be connected to the locking portion 24 side, and the connecting hole 66 has a large diameter centering on two places at both ends of the long hole 65. The part 62a is formed by being drilled into a circular shape that can be inserted and removed. As a result, the penetrating portion 21 and the locking portion 24 are urged in the direction away from each other by the elastic force of the spring 63, but the large-diameter portion 62 a of the connecting pin 62 is formed between the long hole 65 and the connecting hole 66. The step part is stopped and the state where the slide groove 64 and the slide rib 67 are engaged with each other is maintained.

  The slide rib 64 and the slide groove 67 are formed so that the large-diameter portion 62a of the connection pin 62 is connected to the connection hole 66 when the penetrating portion 21 and the locking portion 24 are close to each other against the elastic force of the spring 63. It is formed to have a height and a depth that allow it to be detached from. Accordingly, as shown in FIG. 7, the locking portion 24 can be slid so as to be shifted while being pressed toward the distal end portion of the penetrating portion 21, and fits in any one of the two connection holes 66 in a non-slidable manner. be able to.

  Therefore, the connection structure 60 is formed by sliding the locking portion 24 so that the large-diameter portion 62a of the connecting pin 62 on the penetrating portion 21 side relatively moves between the two connecting holes 66. 24 can be allowed to change into a penetrating position (posture) continuous with the outer surface of the penetrating portion 21 and a locking position protruding from the extended surface of the outer surface.

  Accordingly, the locking portion 24 is in a posture in which it can not enter the engagement holes 11a and 11b again (cannot be pulled out) from a posture capable of penetrating through the engagement holes 11a and 11b of the ratchet handle 10 with respect to the penetration portion 21. As long as the large-diameter portion 62a of the connecting pin 62 is not detached from the connecting hole 66, it can be reliably prevented from moving between the penetrating position and the locking position. In addition, since the locking portion 24 slides in a direction perpendicular to the direction of penetration into the engagement holes 11a and 11b of the ratchet handle 10, a load in the return direction even if a load load or the like is applied in the pulling direction. In other words, the ratchet handle 10 is not accidentally pulled out of the engagement holes 11a and 11b. In the present embodiment, the connecting structure 60 is constructed in a slide structure. For example, by twisting a position shifted from the center of the penetrating part 21 as a center, a penetrating position that is continuous with the outer surface of the penetrating part 21 and its position You may make it change to the latching position which protrudes from the extended surface of an outer surface.

  The connecting member 30 includes a rotating shaft 31 that is rotatably passed through the connecting hole 14 that opens to the other end of the changing portion 13 of the ratchet handle 10, and a rotating shaft 31 that is connected to the rotating shaft 31 and is attached to the distal end portion of the insulating rod 40. A joint 32 to be attached is provided, and the ratchet handle 10 and the insulating rod 40 are coupled while allowing mutual rotation.

  The rotating shaft 31 is fixed to the joint 32 so as to be in a posture orthogonal to the extending direction of the ratchet handle 10 and the insulating rod 40, and at the distal end portion inserted into the connecting hole 14 of the ratchet handle 10. A support member 31a having a diameter larger than that of the connection hole 14 is attached, and a split pin or the like is inserted so that it cannot be dropped. The joint 32 is formed with a notch 32a that opens in the direction of the insulating rod 40 and then bends in the orthogonal direction, and a pin 41 of the insulating rod 40 described later enters the depth of the notch 32a and is attached so as not to drop off.

  As a result, the connecting member 30 can attach the ratchet handle 10 to the tip of the insulating rod 40 so as to be rotatable within the horizontal plane in the extending direction. By operating the insulating rod 40, one end of the ratchet handle 10 can be attached. Allows rotation around the center.

  As shown in FIG. 8, the insulating rod 40 includes a pin 41 to be engaged with the joint 32 of the connecting member 30, a grip portion 42 on the base end side gripped by an operator, and an umbrella cover attached to an intermediate portion. 43, 44, and the whole is made of an insulating material such as plastic to ensure insulation.

  The pins 41 are arranged opposite to each other on the side surface of the distal end portion of the insulating rod 40, and are fixed in a protruding shape on the opposite sides to enter the two notches 32a of the joint 32 of the connecting member 30 to engage with each other. Can be combined. The grip portion 42 is provided with a replaceable non-slip material that is difficult to slip. The umbrella covers 43 and 44 are disposed at two positions on the distal end side and the proximal end side in the intermediate portion, and the umbrella cover 43 on the distal end side drops moisture from the connecting member 30 side, and the umbrella cover on the proximal end side. Reference numeral 44 indicates a limit position where the work can be safely performed, and safety in operation is ensured.

  Here, the insulating rod 40 is inserted into the notch 32a of the joint 32 after rotating both of the pins 41 while sinking against the elastic force of the spring incorporating the protrusion 45 at the tip. When the force to be released is released, the projection 45 protrudes by the elastic force of the spring and pushes the joint 32, whereby the pin 41 can be engaged in the engagement groove 32b bent from the notch 32a in a non-detachable manner. In addition, the insulating rod 40 can be locked so that the pin 41 does not rotate by rotating a grip 46 screwed into a screw shape engraved at the center and bringing it to the joint 32 side. It is possible to reliably prevent the connecting member 30 to which is attached from coming off.

  As a result, the insulating rod 40 can be operated safely by bringing the ratchet handle 10 at the tip thereof close to the transformer 100 installed at a high place such as a utility pole, and is attached to one end of the ratchet handle 10. The head portion 102a of the eyebolt 102 to be rotated can be accommodated in the accommodation portion 23 of the adapter 20. In this state, by grasping the grip portion 42 of the insulating rod 40 and rotating the ratchet handle 10 about the eye bolt 102 via the rotation shaft 31 of the connecting member 30, the eye bolt 102 is rotated in the forward and reverse directions. It is possible to assist the operation of opening and closing the lid 101 of the transformer 100 installed at a high place such as a utility pole.

  As described above, in this embodiment, the adapter 20 including the mounting portion 23 that is engaged with the engagement holes 11a and 11b of the ratchet handle 10 of the general-purpose product so as to be relatively non-rotatably engaged with the head portion 102a of the eyebolt 102 is dropped. Can be installed without worrying about. By operating the insulating rod 40 with the ratchet handle 10 attached to the tip, the eyebolt 102 of the transformer 100 at a remote position can be tightened and released. Therefore, maintenance and inspection work for the transformer 100 can be performed safely and inexpensively from a remote location without taking excessive measures such as waiting for the pedestrian to pass.

  Here, in the present embodiment, the adapter 20 in which the engaging portion 24 is connected to the other end portion of the penetrating portion 21 so as not to be separated will be described as an example. However, the present invention is not limited to this example. It is good also as the adapter 50 as shown. In this adapter 50, instead of the connecting portion 22, a nut 52 having the same outer shape as that of the connecting portion 22 is fixed to the housing portion 23 by welding or the like. Instead, a bolt 51 to be screwed onto the nut 52 is provided.

  In this adapter 50, the nut 52 is coupled and engaged with the engagement hole 11 b of the ratchet handle 10 in a relatively non-rotatable manner, and the threaded portion 51 b of the bolt 51 is inserted through the engagement hole 11 a of the ratchet handle 10. The head portion 51a and the receiving portion 23 of the bolt 51 are locked to the front and back end surfaces of the engagement holes 11a and 11b so that they cannot be pulled out.

  Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea.

It is a figure which shows one Embodiment of the rotation assistance tool provided with the ratchet handle which set the adapter which concerns on this invention, and is a partially expanded elevation view which shows the schematic whole structure. It is an elevational view showing a schematic overall configuration of the ratchet handle. It is an elevation view which shows the whole structure of the adapter for ratchet handles. It is a figure explaining the setting to the ratchet handle of the adapter, (a) is a partial cross section elevation which shows the state before the completion of the setting, (b) is a partial cross section elevation which shows the state of the completion of the setting FIG. It is a partial cross section front view which shows the principal part of the adapter for ratchet handles. It is a state figure which shows the movement of the principal part of the adapter for ratchet handles, (a) is the top view, (b) is the partial cross section side view. It is a state figure which shows the movement of the principal part of the adapter for ratchet handles, (a) is the top view, (b) is the partial cross section side view. It is a top view which shows the insulation stick | rod which attaches the ratchet handle to a front-end | tip part. It is a figure which shows the other aspect of the adapter for the ratchet handle, (a) is a partial cross section elevation which shows the state before the completion of the setting, (b) is a partial cross section elevation which shows the state of the completion of the setting FIG. It is a perspective view which shows an example of the apparatus opened and closed with the rotation assistance tool. It is a top view which shows the rotation object.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Ratchet handle 11 Engagement part 11a, 11b Engagement hole 12 Switching lever 20, 50 Ratchet handle adapter 21 Through part 22 Connection part 23 Engagement part 23a Collection hole 24 Locking part 30 Connection member 31 Rotating shaft 40 Insulating rod 51 Bolt 51a Head 51b Screw part 52 Nut 100 Transformer 101 Cover 102 Eye bolt 102a Head

Claims (5)

A ratchet handle adapter attached to an engagement hole to be engaged with a rotation target of the ratchet handle,
A penetrating portion that penetrates through an engagement hole communicating with the front and back of the ratchet handle;
A connecting portion connected to one of the front side or the back side of the engagement hole of the ratchet handle, continuously connected to one end portion of the penetrating portion that cannot be pulled out toward the other side and cannot be relatively rotated;
An engaging portion that is connected to the connecting portion and engages with a rotating object;
Other than the through portion that locks the other end of the through portion to the other side of the engaging hole so that the connecting portion is connected to one side of the front side or the back side of the engaging hole of the ratchet handle. A locking portion continuously provided at the end, and
The ratchet handle adapter is characterized in that the penetrating part, the connecting part, the engaging part, and the locking part are not separable during the operation.   The locking portion includes a structure that changes the outer shape from a shape that can penetrate the engagement hole of the ratchet handle as a distal end side of the penetration portion to a shape that cannot be re-entered into the engagement hole. The ratchet handle adapter according to claim 1, wherein the ratchet handle adapter according to claim 1, wherein the ratchet handle adapter is formed as one part that cannot be separated together with the engagement portion and the engagement portion. The penetrating part and the locking part are formed in one part that cannot be separated, and the connecting part and the engaging part are formed in one part that cannot be separated,
By connecting the connecting portion and the penetrating portion that penetrates through the engagement hole of the ratchet handle, the engaging portion and the engaging portion that cannot enter the engagement hole are attached so that they cannot be pulled out from the engagement hole. The ratchet handle adapter according to claim 1.   The ratchet handle adapter according to any one of claims 1 to 3, wherein the engaging portion is formed in a socket shape that accommodates the head of the eyebolt in a non-rotatable manner. A rotation aid that assists in tightening / releasing the rotation target of equipment installed at a remote location,
A ratchet handle in which the ratchet handle adapter according to any one of claims 1 to 4 is attached to one end;
An insulating rod attached to the tip end of a rotation shaft that pivotally supports the other end of the ratchet handle;
A rotation assisting device comprising:

Images