Tail peduncle break removal tool and tail peduncle break removal method

Abstract

A tail shank break-off removal tool and a tail shank break-off removal method can improve the working efficiency by always arranging a moving component at the operator's hand when breaking off and removing the tail shank, regardless of the direction of the tail shank of a screw sleeve inserted into a screw hole. The invention comprises: an insertion component (2) having a hook (231), the hook (231) being hooked on the tail handle of a screw sleeve with a tail handle inserted into a screw hole; a moving component (4) being configured to move the insertion component (2) from the deep side of the screw hole to the near front side along an oblique direction obliquely intersecting the extension direction of the screw hole, so as to break off and remove the tail handle from the screw sleeve with the tail handle; and a limiting component (3) having a receiving hole (31) and a gripped portion (33), the receiving hole (31) being configured to allow the insertion component (2) to pass through the interior of the receiving hole (31) along the extension direction and to accommodate the insertion component (2), the gripped portion (33) being in contact with the moving component (4), the limiting component gripping portion (45) of the moving component (4) being embedded in the gripped portion (33), thereby gripping the limiting component (3), and setting the insertion component (2) to be rotatable relative to the moving component (4) with the extension direction as the rotation axis.

Description

Technical Field

[0001] Embodiments of the present invention relate to a tail shank break removal tool and a tail shank break removal method. Background Art

[0002] Generally, when a strong internal thread is sought, such as when durability of the internal thread is required or strong fastening is required, a screw insert such as a coil screw insert or a thread screw insert is used. The screw insert is formed by winding a wire such as stainless steel into a coil shape, and is inserted (buried) into a screw hole (threaded hole) of a workpiece such as a resin or aluminum alloy by a screw insert tool.

[0003] In addition, a tail handle bent in the diameter direction of the coil is formed at the end of the screw sleeve. When inserting the screw sleeve with the tail handle into the screw hole, the user uses a screw sleeve insertion tool to clamp the tail handle through the front end of the screw sleeve insertion tool, or hooks the front end of the screw sleeve insertion tool on the tail handle, and rotates the screw sleeve with the help of the tail handle to screw the screw sleeve into the screw hole.

[0004] Like this, the tail handle is used when inserting the screw sleeve into the screw hole, and is no longer needed after the screw sleeve is inserted. If it is left, it may hinder its entry when tightening the external thread. Therefore, in order to break off and remove the tail handle after the screw sleeve is inserted to remove the tail handle, a notch for breaking and removing the tail handle is formed around the root of the tail handle.

[0005] After inserting the screw sleeve into the screw hole, the user places a pin such as a steel rod against the tail handle and strikes the head of the pin with a hammer to break off and remove the tail handle (breaking and removing operation). However, since the tail handle broken off from the screw sleeve remains in the screw hole, the user uses a tool such as tweezers to recycle the tail handle from the screw hole (recycling operation).

[0006] In this way, in order to remove the tail shank, both the breaking and removing operation and the recovery operation need to be performed. In addition, since the tool needs to be exchanged during the operation, the operation is interrupted, so the operation efficiency is reduced. In addition, since a large force is applied to the tail shank along the insert insertion direction during the breaking and removing operation of the tail shank, the so-called skipping of the teeth of the workpiece and the teeth of the insert may occur.

[0007] Since the external thread cannot be screwed in if the thread is skipped, it is necessary to temporarily remove the corresponding screw sleeve from the workpiece and then re-insert the new screw sleeve into the workpiece. Therefore, the applicant has developed a tail handle breaking and removing tool described in the following patent document 1 to eliminate these inconveniences.

[0008] Prior art literature

[0009] Patent Literature

[0010] Patent Document 1: Japanese Patent No. 6879581 Summary of the invention

[0011] Technical problem to be solved by the invention

[0012] The tail shank breaking and removing tool described in the above patent gazette can significantly eliminate the thread skipping of the screw sleeve caused by the breaking and removing operation using a steel rod or the like, and can recover the tail shank after breaking and removing without leaving the tail shank in the screw hole, thereby significantly improving the working efficiency. On the other hand, inconveniences often occur in the following aspects.

[0013] That is, as mentioned above, the threaded sleeve with tail handle is inserted into the screw hole by clamping the tail handle by the threaded sleeve insertion tool, but the direction in which the tail handle faces in the screw hole is different in each screw hole. In addition, it is difficult to manage the direction of the tail handle after the insertion.

[0014] Furthermore, even when the above-mentioned tail shank break-off and removal tool is used, when the tail shank is hooked on the front end of the tail shank break-off and removal tool in order to break off and remove the tail shank, the tail shank break-off and removal tool needs to be rotated in accordance with the direction of the tail shank.

[0015] This is because the orientation of the front end of the tail shank hooked in the tail shank breaking and removing tool is fixed. In addition, since the tail shank has various orientations in the screw hole, the handle of the pliers that the operator holds to break and remove the tail shank may be located away from the operator when the front end is hooked on the tail shank.

[0016] As a result, the operator needs to change the orientation of the body every time in order to hold the handle. Or, in order to make the handle easy to hold, the orientation of the workpiece itself having the screw hole for the screw sleeve to be inserted must be changed. Therefore, the process of breaking and removing increases, and the working efficiency may also be reduced.

[0017] The present invention is proposed to solve the above-mentioned technical problems. The purpose of the present invention is to provide a tail shank break-off removal tool and a tail shank break-off removal method. By using the tail shank break-off removal tool and the tail shank break-off removal method, no matter what the orientation of the tail shank in the screw sleeve inserted into the screw hole is, the moving part is always arranged at the operator's hand when breaking and removing the tail shank, thereby improving the working efficiency.

[0018] Solutions for solving problems

[0019] The tail shank break-off and removal tool in the embodiment of the present invention is characterized in that it comprises: an insertion component having a hook, the hook being hooked on the tail shank of a screw sleeve with a tail shank inserted into a screw hole; a moving component that causes the insertion component to move from the deep side of the screw hole to the near front side along an oblique direction obliquely intersecting the extension direction of the screw hole to break off and remove the tail shank from the screw sleeve with the tail shank; and a limiting component having a storage hole and a gripped portion, the storage hole allows the insertion component to pass through the interior of the storage hole along the extension direction and accommodate the insertion component, the gripped portion is in contact with the moving component, the limiting component gripping portion of the moving component is embedded in the gripped portion, thereby the limiting component is gripped, and the insertion component is configured to be rotatable relative to the moving component with the extension direction as the rotation axis.

[0020] In addition, the insertion component constituting the tail handle breakage removal tool includes: a main body; a connecting portion connected to one end of the main body and connected to the insertion component holding portion of the moving component; and a hook component, which is provided at the other end of the main body, which is the end on the side opposite to the one end, and has a hook.

[0021] Furthermore, the hook member is formed to be detachable from the main body. In addition, the hook member includes a fitting portion that can be connected to the main body at one end side of the hook member, and a hook that hooks the tail handle at the other end side of the hook member.

[0022] The hook has a hook surface hooked on the tail handle, and is formed to be hooked on the tail handle in a state where the long side direction of the hook surface is perpendicular to the extension direction of the tail handle, and the hook is inserted into the screw hole and then rotated by the insertion member to hook the tail handle.

[0023] The tail shank break-off removal tool further includes a driving unit for rotating the hook.

[0024] The moving component includes an insert component holding portion in addition to a limiting component holding portion, and the insert component holding portion is in rotatable contact with the insert component. The moving component moves the hook component so that the hook is hooked on the tail handle and the tail handle is pulled up in an oblique direction, thereby breaking off and removing the tail handle from the screw sleeve with the tail handle.

[0025] The tail shank break-off and removal tool further includes a holding member that holds the tail shank that is broken off and removed from the screw sleeve with the tail shank and hooked on the hook.

[0026] The tail handle breaking and removing method in the embodiment of the present invention uses a tail handle breaking and removing tool, the tail handle breaking and removing tool comprising: an inserting component having a hook, the hook being hooked on the tail handle of the screw sleeve with the tail handle inserted into the screw hole; a moving component for moving the inserting component; and a limiting component having a receiving hole and a gripped portion, the receiving hole allowing the inserting component to pass through the interior of the receiving hole along the extension direction and to receive the inserting component, the gripped portion being in contact with the moving component, the limiting component gripping portion of the moving component being embedded in the gripped portion, thereby restricting the component from being gripped, and the inserting component being set to be rotatable relative to the moving component with the extension direction as the rotation axis, the tail handle breaking and removing method comprising the following steps: rotating the connecting portion or the main body of the inserting component and hooking the hook on the tail handle of the screw sleeve with the tail handle inserted into the screw hole; and moving the inserting component from the depth side of the screw hole to the front side along the oblique direction obliquely intersecting the extension direction of the screw hole by the moving component, so as to break and remove the tail handle from the screw sleeve with the tail handle.

[0027] Effects of the Invention

[0028] With the tail shank breaking and removing tool or the tail shank breaking and removing method in the embodiment of the present invention, regardless of the orientation of the tail shank in the screw sleeve inserted into the screw hole, the operating efficiency can be improved by always arranging the moving part at the operator's hand when breaking and removing the tail shank. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a perspective view showing the entirety of the tail shank break-off removal tool according to the embodiment of the present invention.

[0030] Figure 2 It is a left side view showing the entirety of the tail shank break-off removal tool according to the embodiment of the present invention.

[0031] Figure 3 It is an exploded perspective view showing the structure of an insertion member and a restriction member according to the embodiment of the present invention.

[0032] Figure 4 It is a perspective view showing the structure of a moving member of the tail tang break-off and removal tool according to the embodiment of the present invention. DETAILED DESCRIPTION

[0033] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that in the embodiments, the up, down, left, and right directions are based on the directions in the accompanying drawings.

[0034] In addition, the embodiment described below shows an example of the present invention. In addition, various changes or improvements can be applied to this embodiment, and the mode to which such changes or improvements are applied can also be included in the present invention. The embodiment and its deformation are included in the scope and gist of the invention, and are included in the invention described in the claims and the scope of the equivalent.

[0035] (Basic structure)

[0036] first, Figure 1 1 is a perspective view showing the entire tail shank breakage removal tool 1 according to the embodiment of the present invention. Figure 2 It is a left side view showing the whole of the tail shank break-off and removal tool 1 according to the embodiment of the present invention.

[0037] like Figure 1 and Figure 2 As shown, a tail shank breaking and removing tool 1 according to an embodiment of the present invention comprises an inserting member 2, a restricting member 3, and a moving member 4. The tail shank breaking and removing tool 1 is used to break off and remove a tail shank from a screw insert with a tail shank (hereinafter appropriately referred to as a "screw insert") inserted (buried) into a screw hole of a workpiece (not shown) and to recover the tail shank.

[0038] like Figure 1 and Figure 2 As shown, in the tail shank break removal tool 1, the insertion member 2 and the limiting member 3 are respectively connected to the insertion member holding portion 44 and the limiting member holding portion 45, which are provided to protrude from the front end portion of the moving member 4. In addition, the insertion member 2 is configured to penetrate the interior of the limiting member 3.

[0039] Here, Figure 3 2 is an exploded perspective view showing the structure of the insertion member 2 and the restriction member 3 according to the embodiment of the present invention. Figure 3 Among the components shown, the upper three are structures for inserting the component 2, and the lower one is the limiting component 3.

[0040] The insertion member 2 is inserted into a screw sleeve inserted into a screw hole of a workpiece, and contacts the tail shank when the tail shank is broken off and removed. Figure 3 The illustrated insertion member 2 is composed of three parts: a main body portion 21 , a connecting portion 22 , and a hook member 23 .

[0041] The main body 21 is formed in a cylindrical shape and is a part that can be said to be the main trunk of the insertion member 2. And, a connecting portion 22 is embedded in one end portion that is the upper side. Figure 1 , Figure 2 As shown, the connection portion 22 is connected to the insertion member holding portion 44 of the moving member 4, and constitutes a part of the tail shank break-off and removal tool 1.

[0042] The connecting portion 22 is composed of a contact portion 221 connected to the insert member holding portion 44, a rotating portion 222 formed at its upper end, and an insert portion 223 formed at its lower end. The contact portion 221 is fitted with the insert member holding portion 44 in a state where the outer circumferential surface of the contact portion 221 is in contact with the insert member holding portion 44 according to the shape of the insert member holding portion 44 described later, so that the insert member 2 can be rotated as a whole.

[0043] The rotating portion 222 is used to rotate the insertion member 2 after the insertion member 2 is inserted into the screw hole so as to hook a hook member 23 described later on the tail handle to be broken off and removed.

[0044] That is, as described above, the tail handle of the high-precision screw insert screwed into the screw hole has various directions. Therefore, it is also possible to consider the case where the tail handle cannot be hooked by simply inserting the insertion member 2 into the screw hole hook member 23. Therefore, for the insertion member 2 inserted into the screw hole, in order to reliably hook the tail handle with the hook member 23, the rotation part 222 is used to rotate the insertion member 2.

[0045] It should be noted that the diameter of the rotating portion 222 is formed to be larger than the diameter of the contact portion 221. This is because when the contact portion 221 is fitted into the through hole 441 of the insert component holding portion 44 described later, the surface of the contact portion 221 on the rotating portion 222 side contacts the insert component holding portion 44, thereby allowing the insert component 2 to be held as a whole by the insert component holding portion 44.

[0046] In addition, the insertion portion 223 is used to connect the connection portion 22 to the main body 21. That is, the insertion portion 223 is connected to the upper end of the main body 21. It should be noted that if the connection portion 22 and the main body 21 can be connected in a manner that can rotate as a whole, the insertion portion 223 can also be fitted into the main body 21. Alternatively, the two can be connected by forming an external thread on the insertion portion 223 and forming an internal thread on the upper end of the main body 21.

[0047] When rotating the insertion member 2, for example, the operator grasps the rotating portion 222 and rotates it with his fingers. Alternatively, in addition to the method of manually rotating the insertion member 2, for example, a driving portion not shown in the figure may be provided in the connecting portion 22, and the connecting portion 22 may be rotated by the driving portion. Alternatively, although the rotating portion 222 is rotated here, the insertion member 2 may be rotated by rotating the main body 21, for example.

[0048] It should be noted that the rotating portion 222 in the embodiment of the present invention is cylindrical to match the shape of the main body 21. However, considering the difficulty of the operator rotating the insertion member 2, a prism or polygonal shape may be used instead of a cylindrical shape.

[0049] The hook member 23 is formed in a cylindrical shape, and a hook (hook portion) 231 is formed at the lower end of the hook member 23. The hook 231 is formed in an L shape to hook the tail handle of the screw sleeve inserted into the screw hole. Figure 1 and Figure 2 As shown, the hook member 23 is connected to a part of the moving member 4 and is configured to be movable upward by the moving member 4 (details will be described later).

[0050] Here, the insertion member 2 is inserted into the screw hole from the hook 231 side and moves deeper into the screw hole. At this time, even if the hook 231 abuts against the tail handle, the tail handle will not be broken off and removed. In the case of breaking off and removing the tail handle, for example, the operator grasps the rotating part 222 and rotates the insertion member 2 so that the tail handle is sandwiched between the hook surface M1 of the hook 231 formed in an L shape and the surface opposite to the hook surface M1 in a contacting manner. Then, in the state where the tail handle is thus sandwiched by the hook 231, the insertion member 2 is moved upward by the moving member 4, and the tail handle is broken off and removed.

[0051] The upper end of the hook member 23 is provided with a fitting portion 232. The fitting portion 232 is provided to be connected to the fixing portion 211 provided at the lower end of the main body 21, and the hook member 23 is fixed to the lower end of the main body 21. The fitting portion 232 can be configured in various ways as long as it is fixed and does not fall off when connected to the main body 21 and can rotate together with the insertion member 2 when the insertion member 2 rotates.

[0052] The restricting member 3 is formed in a cylindrical shape (sleeve shape), and has a housing hole 31 formed as a through hole in the longitudinal direction thereof. The housing hole 31 is formed in a size capable of moving and housing the hook member 23 (insertion member 2).

[0053] In addition, a workpiece contact portion 32 that contacts the workpiece is provided at the lower end of the limiting member 3. When the tail shank of the screw insert embedded in the screw hole is broken off and removed by the tail shank breaking and removing tool 1, the workpiece contact portion 32 directly contacts the workpiece and applies force to the workpiece, thereby facilitating the breaking and removal of the tail shank.

[0054] It should be noted that a guard made of, for example, a resin material may be attached to the workpiece contact portion 32. The guard is formed in an annular shape and functions as a buffer material for relieving the impact when the restriction member 3 contacts the surface of the workpiece.

[0055] When the tail handle is broken off from the screw sleeve inserted into the screw hole, the limiting member 3 contacts the surface of the workpiece via the workpiece contact portion 32. In addition, the separation distance between the screw hole and the moving member 4, that is, the separation distance (for example, vertical separation distance) between the surface of the workpiece and the moving member 4 is determined (details will be described later).

[0056] The gripped portion 33 is formed as a concave portion in the upper outer circumference of the restriction member 3 over the entire circumference. With such a shape, the restriction member gripping portion 45 described later fits into the gripped portion 33, and the restriction member 3 is gripped by the moving member 4.

[0057] A hollow portion 34 is formed in the center of the restricting member 3. The hollow portion 34 is formed by cutting the surface of the restricting member 3 from the outer periphery toward the receiving hole 31, and a part of the hollow portion 34 is hollowed out in a direction perpendicular to the penetration direction of the insertion member 2.

[0058] By forming the hollow portion 34 in the restricting member 3 in this way, the insertion member 2 passing through the housing hole 31 can be rotated in the hollow portion 34. That is, when the hook 231 is hooked on the tail handle inside the screw hole, the insertion member 2 is rotated, and when the insertion member 2 is rotated, the rotating portion 222 can be used as described above.

[0059] However, it is also conceivable that it is difficult for an operator to rotate the insertion member 2 using the rotating portion 222 to perform the operation of breaking and removing the tail shank using the tail shank breaking and removing tool 1. Therefore, in order to rotate the insertion member 2 without using the rotating portion 222, a hollow portion 34 is provided in the limiting member 3.

[0060] For example, the operator places his hand on the restriction member 3 so as to pinch the hollow portion 34 between the thumb and index finger, whereby the thumb and index finger come into contact with the main body 21 of the insertion member. Therefore, the operator can rotate the insertion member 2 using the thumb and index finger.

[0061] It should be noted that when forming the hollow portion 34, it is not only possible to consider extending the hollowed-out area to, for example, Figure 3 In addition to the area shown in the figure, it is also conceivable that the insertion member 2 extends downward in the direction in which the storage hole 31 penetrates.

[0062] However, if the region of the hollow portion 34 is formed too close to the workpiece contact portion 32, the broken-off tail shank may fall outward from the hollow portion 34 when the insert member 2 is pulled up. In this way, if the broken-off tail shank falls off during the pulling-up process, it may fall into other screw holes.

[0063] Therefore, in the restricting member 3 according to the embodiment of the present invention, in order to minimize the rotation of the insertion member 2 , the area of ​​the hollow portion 34 is set to such an extent that the operator can contact the insertion member 2 through the hollow portion 34 .

[0064] It should be noted that, in the restricting member 3 according to the embodiment of the present invention, the hollow portion 34 is formed in this manner, but the hollow portion 34 may not be formed initially and the restricting member 3 may be formed in a cylindrical shape.

[0065] like Figure 1 , Figure 2 or Figure 4 As shown, the moving member 4 is a pliers in the embodiment of the present invention. When the tail handle is broken off from the screw sleeve inserted into the screw hole, the moving member 4 moves the hook member 23 from the deep side of the screw hole to the near front side (from the lower side to the upper side) along the direction obliquely intersecting the extending direction of the screw hole, that is, the oblique direction (details will be described later).

[0066] Figure 4 1 is a perspective view showing the structure of the moving part 4 of the tail shank break removal tool 1 according to the embodiment of the present invention. The moving part 4 (pliers) has a first support rod 41 and a second support rod 42. These first support rod 41 and second support rod 42 are connected by a pivot (rotation axis) 43 so that their ends are close to or away from each other, thereby forming a pliers structure that can freely open and close the ends.

[0067] The insert member holding portion 44 is connected to one end of the first stay 41. The insert member holding portion 44 has a through hole 441 at the other end opposite to the one end connected to the first stay 41. The through hole 441 has a circular shape. The contact portion 221 of the connecting portion 22 of the insert member 2 is disposed through the through hole 441.

[0068] Moreover, as described above, since the connecting portion 22 is formed such that the diameter of the rotating portion 222 is larger than the diameter of the contact portion 221 , when the connecting portion 22 is respectively connected to the main body portion 21 and the hook portion 23 to form an insertion portion 2 , the insertion portion 2 is retained on the moving portion 4 via the insertion portion retaining portion 44 .

[0069] However, the diameter of the through hole 441 is formed larger than the diameter of the contact portion 221 . Therefore, the insertion member 2 is rotatable while being held by the insertion member holding portion 44 .

[0070] The limiting member holding portion 45 is connected to one end of the second support rod 42. The limiting member holding portion 45 has a fork 451 formed at the other end opposite to the one end connected to the second support rod 42. The fork 451 has a protruding shape formed to be separated from each other so as to be able to hold the limiting member 3. Figure 1 and Figure 2 As shown, the restriction member 3 is gripped by the moving member 4 by the fork 451 abutting against the gripped portion 33 .

[0071] It should be noted that, like this, the limiting member 3 is held by the limiting member holding portion 45 in contact with the held portion 33, but the limiting member 3 and the limiting member holding portion 45 may also be configured to be rotatable relative to each other. Alternatively, the limiting member 3 may also be configured to be held by the limiting member holding portion 45 and not be rotatable.

[0072] The other end of the first stay 41 and the other end of the second stay 42 are formed as handles 411 and 421 to be held by the user, respectively. The first stay 41 and the second stay 42 are urged by the urging member 46 in a direction in which the insertion member holding portion 44 and the restriction member gripping portion 45, which are one end portions of each other, are brought closer together (in a closing direction). As the urging member 46, for example, a spring such as a coil spring can be used.

[0073] (Caudal peduncle breaking and removal action)

[0074] Next, the tail shank break-off removal operation using the aforementioned tail shank break-off removal tool 1 will be described.

[0075] The spiral sleeve is formed into a cross section by winding a diamond-shaped wire (such as a metal such as stainless steel) into a coil shape. The outer peripheral surface of the spiral sleeve functions as an outer thread, and the inner peripheral surface of the spiral sleeve functions as an inner thread. A tail handle bent in the diameter direction of the coil is formed at one end of the spiral sleeve. In addition, a notch for breaking and removing the tail handle is formed around the root of the tail handle in the spiral sleeve.

[0076] The notch is formed in the screw sleeve in a manner that a small piece of the tail handle removed from the screw sleeve is turned into a "V" shape. The rotation angle of the notch centered on the axis of the coil is formed in the range of, for example, 10 to 90 degrees in the circumferential direction of the coil connected from the root of the tail handle to the tail handle (the extension direction of the tail handle is set to 0 degrees). If the screw sleeve is inserted into the screw hole by the screw sleeve insertion tool, the tail handle is located at the depth side of the screw hole.

[0077] In the tail handle breaking and removing operation of breaking and removing the tail handle, first, the operator holds the handles 411 and 421 as the other end of the moving member (pliers) 4, and inserts the insertion member 20, that is, the hook member 21, into the screw hole from above the screw hole. It should be noted that in this state, the handles 411 and 421 are not held by the operator. In addition, at this time, the limiting member 3 does not contact the workpiece.

[0078] In the process that the inserted hook member 23 gradually descends starting with the hook 231, the hook 231 contacts with the tail handle, or does not contact with the tail handle, and the hook 231 reaches the position where the tail handle is arranged.

[0079] When the inserted hook 231 does not contact the tail handle, it is unknown whether the hook surface M1 of the hook 231 is oriented in a direction capable of hooking the tail handle, but the hook 231 is arranged at a position where the hook surface M1 can be hooked to the tail handle.

[0080] Therefore, next, the operator rotates the insertion member 2 to hook the tail handle in a manner that the tail handle is sandwiched between the hook surface M1 and its opposite surface. As described above, since the orientation of the tail handle is unknown when the insertion member 2 is inserted into the screw hole, it is unclear whether the hook surface M1 can be hooked on the tail handle. Therefore, the insertion member 2 is rotated to make the hook 231 contact the tail handle so that the tail handle is hooked on the hook surface M1.

[0081] It should be noted that, when rotating the insertion member 2 , in addition to the method in which the operator actively rotates the insertion member 2 , the insertion member 2 can also be rotated by, for example, transmitting a driving force from a driving unit to the coupling portion 22 as described above.

[0082] In addition, as a method for the operator to rotate the insertion component 2, in addition to the method of rotating the rotating portion 222 of the insertion component 2, as described above, there is also a method of rotating the insertion component 2 by making the finger contact the hollow portion 34 of the limiting component 3 with the main body 21 of the insertion component 2.

[0083] As the insertion member 2 rotates, the hook surface M1 of the hook 231 contacts the tail handle and clamps the tail handle between the hook surface M1 and its opposite surface. The insertion member 2 is in a state where it does not rotate further, so it can be known whether the tail handle is clamped by the hook surface M1. The operator can recognize that the tail handle is clamped by the hook surface M1 by feeling such resistance, and can also grasp the handles 411 and 421 of the moving member 4.

[0084] In this state, the operator holds the handles 411 and 421 of the moving member 4. Accordingly, the first and second stays 41 and 42 of the moving member 4 move in a direction (opening direction) that separates the insertion member holding portion 44 and the restriction member gripping portion 45 provided at one end thereof.

[0085] At this time, because the insertion component holding portion 44 provided at one end of the first support rod 41 is in contact with the contact portion 221 of the connecting portion 22 of the insertion component 2 in the through hole 441, as the insertion component holding portion 44 of the first support rod 41 moves upward, the insertion component 2 itself also moves upward.

[0086] On the other hand, the workpiece contact portion 32 of the limiting member 3 provided at one end of the second support rod 42 contacts the surface of the workpiece by the first support rod 41 and the second support rod 42 moving in the direction of separation from each other. Specifically, the workpiece contact portion 32 contacts the periphery of the screw hole into which the screw sleeve is inserted in the receiving hole 31, and the screw sleeve has a tail shank to be broken and removed.

[0087] As described above, the workpiece contact portion 32 of the limiting member 3 contacts the surface of the workpiece, and the vertical separation distance between the surface of the workpiece and the moving member 4 is fixed. In addition, the limiting member holding portion 45 provided at one end of the second support rod 42 is restrained from further moving downward. Therefore, the limiting member holding portion 45 does not move downward, and a downward force acts on the workpiece.

[0088] On the other hand, the insertion member holding portion 44 provided at one end of the first stay 41 continues to move upward. That is, the insertion member holding portion 44 continues to pull up the insertion member 2, and the tail handle clamped by the hook 231 also moves upward through the movement of the insertion member 2.

[0089] When the hook member 23 rises, the hook 231 of the hook member 23 hooked on the tail handle is pulled up. As described above, the hook 231 is hooked on the tail handle in a state where the longitudinal direction of the hook surface M1 is perpendicular to the extending direction of the tail handle.

[0090] Next, the hook member 231 hooked on the tail handle is raised in an acute angle direction inclined at a predetermined angle (e.g., a predetermined angle within a range of 7 to 8 degrees) relative to the extending direction of the screw hole. Figure 1 and Figure 2 ) is closed, the insertion member holding portion 44, which is one end portion of the first support rod 41, stops moving upward, and the movement of the hook member 23 also stops.

[0091] During the process of the hook member 23 ascending, the tail shank is broken off from the screw sleeve, and the broken off tail shank is held by the hook 231. Then, the tail shank breaking and removing tool 1 is lifted upward from the workpiece by the operator, and the hook member 23 is removed from the screw hole. Then, the tail shank is removed from the hook 231 by the operator.

[0092] According to the above-mentioned tail handle breaking and removing operation, the operator inserts the insertion member 2 into the screw sleeve in the screw hole from the hook 231 side while holding the handles 411 and 421 of the moving member 4, and rotates the insertion member 2 so that the hook 231 clamps the tail handle. If the hook 231 clamps the tail handle, the operator holds the handles 411 and 421 of the moving member 4, and the insertion member 2 moves upward, and the tail handle is broken and removed from the screw sleeve.

[0093] Thus, the broken and removed tail handle is recovered by the tail handle breaking and removing tool 1. Therefore, since it is possible to realize the operation of recovering the broken and removed tail handle from the screw hole without using tools such as tweezers as in the past, the operation efficiency can be improved. In addition, no matter what direction the tail handle of the screw sleeve in the screw hole is in, it can be clamped by the hook 231 by rotating the insertion component 2, so the tail handle can be reliably broken and removed.

[0094] In addition, the hook 231 is hooked on the tail handle and pulled up from the depth side of the screw hole to the near front side along the oblique direction obliquely intersecting the extension direction of the screw hole. Therefore, compared with the case where the hook 231 is hooked on the tail handle and pulled up from the depth side of the screw hole to the near front side in parallel with the extension direction of the screw hole, the tail handle can be reliably broken and removed.

[0095] It should be noted that, through experiments, it was confirmed that, in many tail handles, the tail handle that could not be broken off and removed even if the hook 231 was pulled up in parallel with the extending direction of the screw hole could be broken off and removed by pulling up the hook 231 in an oblique direction.

[0096] The inclination angle in the oblique direction is, for example, a predetermined angle of an acute angle within a range of 7 to 8 degrees relative to the extending direction of the screw hole. If the hook 231 is hooked on the tail handle, a force acts on the tail handle along the direction of the predetermined angle.

[0097] The predetermined angle is set according to the diameter and height (length parallel to the extension direction of the screw hole) of the screw sleeve. For example, in order to easily break off and remove the tail handle, it is preferably within 20 degrees. In addition, in order to easily break off and remove the tail handle, in order to miniaturize the limiting component 3, it is more preferably within 10 degrees.

[0098] Here, when the hook 231 is not hooked on the tail handle, if the operator operates the moving member 4, the hook member 23 moves along a circle, that is, a curve, centered on the pivot 43, and the hook 231 also moves along the curve. When the hook member 23 is not inserted into the screw hole, the moving member 4 moves the hook member 23 so that the hook 231 rotates about the pivot 43 as a rotation axis that intersects (e.g., is orthogonal to) a plane parallel to the extending direction of the screw hole and the extending direction of the tail handle.

[0099] In addition, since the inserting member 2 and the limiting member 3 are formed to be detachable relative to the moving member 4, the inserting member 2 and the limiting member 3 are removable. Therefore, it is possible to prepare several limiting members or several inserting members in advance, for example, according to the diameter and height of the screw sleeve, the inserting member 2 or the limiting member 3 can be replaced with other limiting members or other inserting members of different types.

[0100] As described above, according to the tail shank breakage and removal tool 1 involved in an embodiment of the present invention, the hook component 23 having a hook 231 hooked on the tail shank of the screw sleeve inserted into the screw hole is moved from the depth side of the screw hole to the near front side along the oblique direction obliquely intersecting the extension direction of the screw hole by the moving component 4, and the tail shank is broken off and removed from the screw sleeve inserted into the screw hole.

[0101] It should be noted that, as described above, the hook 231 of the hook member 23 holds the broken and removed tail handle by clamping. However, this may not be the case, for example, a holding member may be provided in the hook 231.

[0102] That is, the holding member is arranged in the hook 231 so as to be positioned near the portion where the tail handle abuts, for example, near the hook surface M1 of the hook 231. As the holding member, for example, a magnet (for example, a permanent magnet) that attracts the tail handle is used. In addition, it is also possible to adsorb and hold the broken and removed tail handle by, for example, magnetizing the hook member 23 itself or the hook 231 itself instead of the holding member.

[0103] By providing such a holding member or magnetizing the hook member 23, etc., the tail shank broken off from the screw sleeve is held by the holding member, etc. Therefore, the broken off tail shank can be recovered by the tail shank breaking and removing tool 1. Therefore, since it is possible to achieve a recovery operation that does not require the use of tools such as tweezers to recover the broken off tail shank from the screw hole as in the past, it is possible to improve the work efficiency. In addition, it is possible to achieve a situation where there is no need to exchange tools and there is no interruption of the operation due to the exchange of tools, so it is possible to improve the work efficiency.

[0104] The hook 231 may have any shape as long as it can be removed by clamping the tail handle and breaking it off.

[0105] Furthermore, for the above-mentioned insertion component 2, if Figure 3 As shown in FIG. 1 , the inserting member 2 is composed of three parts: the main body 21, the connecting part 22, and the hook part 23. However, the inserting member 2 may not be configured in this way. For example, the main body 21 and the hook part 23 may be integrally formed into one part. Alternatively, the inserting member 2 may be formed as a whole into one part.

[0106] It should be noted that the technology described in the embodiment of the present invention can also adopt the following configurations.

[0107] (1) A tool for removing a broken tail shank, characterized in that it comprises:

[0108] An insertion component having a hook, wherein the hook is hooked on a tail handle of a screw sleeve with a tail handle inserted into a screw hole;

[0109] A moving component is used to move the inserting component from the depth side of the screw hole to the front side along an oblique direction obliquely intersecting the extending direction of the screw hole, so as to break off and remove the tail handle from the screw sleeve with the tail handle; and

[0110] The limiting component has a receiving hole and a gripped portion, wherein the receiving hole allows the inserting component to pass through the inside of the receiving hole along the extending direction and receive the inserting component, and the gripped portion contacts the moving component.

[0111] The restricting member gripping portion of the moving member is fitted into the gripped portion, so that the restricting member is gripped, and the insertion member is rotatable relative to the moving member about the extending direction as a rotation axis.

[0112] (2) The tool for removing a broken tail shank according to (1) above, characterized in that:

[0113] The insert component comprises:

[0114] Main body;

[0115] a connecting portion connected to one end of the main body and connected to the moving member; and

[0116] The hook member is provided at the other end portion of the main body portion which is an end portion on the side opposite to the one end portion and has the hook.

[0117] (3) The tail shank break-off removal tool according to (2) above, wherein the hook member is formed to be detachable from the main body.

[0118] (4) The tail shank break-off removal tool according to (3) above, wherein the hook member includes a fitting portion that can be connected to the main body portion at one end of the hook member, and includes the hook that hooks the tail shank at the other end of the hook member.

[0119] (5) A tail shank breakage removal tool according to any one of (1) to (4) above, characterized in that the hook has a hook surface for hooking onto the tail shank, and is formed to hook onto the tail shank in a state where the long side direction of the hook surface is orthogonal to the extension direction of the tail shank.

[0120] (6) The tool for removing a broken tail shank according to any one of (1) to (5) above, wherein after the hook is inserted into the screw hole, the insertion member is rotated to hook the tail shank.

[0121] (7) The tool for removing a broken tail shank according to any one of (1) to (6) above, further comprising a driving unit for rotating the hook.

[0122] (8) The tool for removing a broken tail shank according to any one of (1) to (7), wherein the moving member includes, in addition to the restricting member gripping portion,

[0123] An insertion member holding portion rotatably contacts the insertion member is further provided.

[0124] (9) The tail shank breaking and removing tool according to any one of (1) to (8) above is characterized in that the moving component moves the hook component so that the hook is hooked on the tail shank and pulls up the tail shank along the oblique direction, thereby breaking off and removing the tail shank from the screw sleeve with the tail shank.

[0125] (10) The tail shank break-off removal tool according to any one of (1) to (9) above, further comprising a retaining member that retains the tail shank that has been broken off from the screw sleeve with the tail shank and hooked on the hook.

[0126] (11) A method for removing a broken tail peduncle, characterized in that a broken tail peduncle removal tool is used,

[0127] The tail shank break removal tool comprises:

[0128] An insertion component having a hook, wherein the hook is hooked on a tail handle of a screw sleeve with a tail handle inserted into a screw hole;

[0129] A moving component moves the insertion component; and

[0130] The limiting component has a receiving hole and a gripped portion, wherein the receiving hole allows the inserting component to pass through the inside of the receiving hole along the extending direction and receive the inserting component, and the gripped portion contacts the moving component.

[0131] The limiting member holding portion of the moving member is embedded in the held portion, so that the limiting member is held, and the insertion member is configured to be rotatable relative to the moving member with the extending direction as a rotation axis.

[0132] The method for removing the tail peduncle from breaking has the following steps:

[0133] Rotating the connecting portion or the main body of the insertion member, and hooking the hook on the tail handle of the threaded sleeve with the tail handle inserted into the screw hole; and

[0134] The insertion component is moved from the depth side of the screw hole to the front side along an oblique direction obliquely intersecting the extension direction of the screw hole by the moving component, so as to break off and remove the tail handle from the screw sleeve with the tail handle.

[0135] Description of Reference Numerals

[0136] 1…tail handle breaking and removing tool; 2…insertion component; 21…main body; 211…fixing portion; 22…connecting portion; 221…contact portion; 222…rotating portion; 223…insertion portion; 23…hook component; 231…hook; 232…fitting portion; 3…limiting component; 31…storage hole; 32…workpiece contact portion; 33…gripped portion; 34…hollowing portion; 4…moving component (pliers); 41…first support rod; 411…handle portion; 42…second support rod; 421…handle portion; 43…pivot; 44…insertion component holding portion; 45…limiting component gripping portion; 441…through hole; 451…fork; M1…hook surface.

Claims

1. A tool for removing a broken tail shank, characterized in that: have: An insertion component having a hook, wherein the hook is hooked on a tail handle of a screw sleeve with a tail handle inserted into a screw hole; A moving component is used to move the inserting component from the depth side of the screw hole to the front side along an oblique direction obliquely intersecting the extending direction of the screw hole, so as to break off and remove the tail handle from the screw sleeve with the tail handle; as well as The limiting component has a receiving hole and a gripped portion, wherein the receiving hole allows the inserting component to pass through the inside of the receiving hole along the extending direction and receive the inserting component, and the gripped portion contacts the moving component. The restricting member gripping portion of the moving member is fitted into the gripped portion, so that the restricting member is gripped, and the insertion member is rotatable relative to the moving member about the extending direction as a rotation axis.

2. The tail shank break removal tool according to claim 1, characterized in that: The insert component comprises: Main body; a connecting portion connected to one end of the main body and connected to the moving member; and The hook member is provided at the other end portion of the main body portion which is an end portion on the side opposite to the one end portion and has the hook.

3. The tail shank break removal tool according to claim 2, characterized in that: The hook member is formed to be detachable from the main body portion.

4. The tail shank break removal tool according to claim 3, characterized in that: The hook member includes a fitting portion that can be coupled to the main body portion at one end side of the hook member, and includes the hook that hooks the tail handle at the other end side of the hook member.

5. The tail shank break removal tool according to claim 1, characterized in that: The hook has a hook surface that is hooked on the tail shank, and is formed to be hooked on the tail shank in a state where the longitudinal direction of the hook surface is perpendicular to the extending direction of the tail shank.

6. The tail shank break removal tool according to claim 1, characterized in that: After the hook is inserted into the screw hole, the insertion component is rotated to hook the tail handle.

7. The tail shank break removal tool according to claim 1, characterized in that: The tool for removing a broken tail shank further includes a driving unit for rotating the hook.

8. The tail shank break removal tool according to claim 1, characterized in that: The moving member includes an insertion member holding portion in addition to the restriction member gripping portion, and the insertion member holding portion is rotatably in contact with the insertion member.

9. The tail shank break removal tool according to any one of claims 1 to 8, characterized in that: The moving component moves the hook component so that the hook is hooked on the tail handle and the tail handle is pulled up along the oblique direction, thereby breaking off and removing the tail handle from the screw sleeve with the tail handle.

10. The tail shank break removal tool according to claim 9, characterized in that: The tail tang break-off and removal tool further includes a holding member that holds the tail tang that is broken off and removed from the screw sleeve with the tail tang and hooked on the hook.

11. A method for removing a caudal peduncle break, characterized in that: Use the tail shank break-off removal tool, The tail shank breakage removal tool comprises: An insertion component having a hook, wherein the hook is hooked on a tail handle of a screw sleeve with a tail handle inserted into a screw hole; A moving component to move the insertion component; as well as The limiting component has a receiving hole and a gripped portion, wherein the receiving hole allows the inserting component to pass through the interior of the receiving hole along the extending direction of the screw hole and receive the inserting component, and the gripped portion contacts the moving component. The limiting member holding portion of the moving member is embedded in the held portion, so that the limiting member is held, and the insertion member is configured to be rotatable relative to the moving member with the extending direction as a rotation axis. The method for removing the tail peduncle from breaking has the following steps: Rotating the connecting portion or the main body of the insertion member, and hooking the hook on the tail handle of the threaded sleeve with the tail handle inserted into the screw hole; and The insertion component is moved from the depth side of the screw hole to the front side along an oblique direction obliquely intersecting the extension direction of the screw hole by the moving component, so as to break off and remove the tail handle from the screw sleeve with the tail handle.

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