Electric slide fastener

Abstract

The utility model provides a slide fastener capable of being driven by an electric drill. The electric slide fastener is provided with a body part for dragging rigging such as a chain in the fastening direction. The body part constitutes a pair of telescopic cylinder structures (A) comprising a cylinder (10) and a cylinder (20). The cylindrical body structure (A) is provided with a female threaded hole body (12) arranged at the bottom of one cylindrical body (10) and a threaded shaft body (30) which is inserted from the outer side end of the other cylindrical body (20), passes through the inner part of the cylindrical body and reaches the female threaded hole body of the one cylindrical body at the tail end, is provided with an external thread and is represented by a long bolt, and a threaded advancing and retreating mechanism (B) enabling the pair of cylindrical bodies to stretch and retract is formed. By means of the pair of cylinder structures (A) and a screw advancing and retreating mechanism (B) for extending and retracting the pair of cylinders, an electric machine (ED1) such as a percussion drill or an electric drill mechanism (ED2) rotates an exposed head (31) of the screw shaft exposed from the bottom of one cylinder around the axis of the screw shaft, thereby advancing and retreating the other screw shaft with respect to the female screw hole. One cylinder body (10) is stretched and contracted along the axis relative to the other cylinder body (20) so as to perform traction.

Description

Technical Field

[0001] This utility model relates to an electric sliding buckle, which is used to replace turnbuckles. Specifically, it is characterized by comprising a pair of cylindrical bodies, and the driving mechanism for driving the pair of cylindrical bodies to slide along the fastening direction is configured as a threaded advance and retraction mechanism consisting of a female threaded hole in one cylindrical body and a threaded shaft that is threaded into the female threaded hole and inserted into the other cylindrical body. The electric sliding buckle can be driven manually with an electric drill or by a remotely operated electric drive mechanism. Background Technology

[0002] To prevent the mold used for pouring concrete in reinforced concrete structures from shifting in position or deforming due to the pressure of the flowing concrete during pouring, its position is maintained by mold materials in both the horizontal and vertical directions. Furthermore, to prevent the mold material from shifting due to vibration or pressure during concrete pouring, it is restrained using the mold material as a support and rigging such as chains as a traction material. In ship transport, containers are secured with steel cables to prevent swaying and shifting. For these chains or steel cables, tension is adjusted using fastening tools such as turnbuckles to prevent them from becoming loose.

[0003] This turnbuckle is constructed by using a pair of spiral shafts with hooks or other locking mechanisms at the ends. One spiral shaft has a right-hand thread, and the other has a left-hand thread. These are screwed into a central rotating buckle. A wrench is used to manually rotate the rotating buckle around the shaft, bringing the hooks on the two spiral shafts closer together in the tightening direction. This turnbuckle has the advantage of a long pull length due to the hooks at both ends, but it has the following problems: with a long pull length, the number of rotations required to the central rotating buckle increases, and tension adjustment takes more time. Furthermore, when the rigging is not slack, the body of the turnbuckle and the chain or other rigging are almost parallel to each other, making it difficult to rotate with a wrench.

[0004] In response, Patent Document 1 describes a fastening buckle that can be easily installed in the middle of a rigging with less slack and is easy to tighten. This buckle involves a cylinder with a second locking portion on the side, and the end of a spiral bar with a hook or similar locking portion protruding from the other end of the cylinder and screwed into a nut. By tightening the nut, the first and second locking portions of the shaft are brought closer together, thereby adjusting the tension of the chain or wire rope. However, since the end of the spiral bar protrudes beyond the nut after passing through it, it is impossible to tighten the nut with a drill, resulting in the limitation that only a wrench perpendicular to the nut can be used. Furthermore, the traction lines of the pair of locking portions, such as the hook, are separated from and inclined from the axis of the swivel buckle, so the tension of the pair of locking portions is directly applied as bending stress to the spiral shaft, resulting in a structural defect that could cause bending or damage to the spiral shaft.

[0005] Previous technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent No. 5004144 Summary of the Invention

[0008] The technical problem to be solved by the invention

[0009] The present invention relates to providing an electric sliding buckle that can be tightened by using power tools such as an impact drill, without the need for a wrench orthogonal to the chain or other rigging, by using a turnbuckle-based rotation of a pair of locking parts.

[0010] means for solving technical problems

[0011] To address the aforementioned issues, the inventor conducted in-depth research and discovered that if a pair of cylindrical bodies constitute the body of a turnbuckle, secured by a chain fastener via a pair of locking parts, and a female threaded hole is provided inside one cylindrical body, a threaded shaft is inserted into the other cylindrical body, and the shaft is threaded and rotates around the axis to form a threaded advance and retraction structure. This allows the pair of cylindrical bodies to function as the body of a turnbuckle. The inventor developed this invention based on this understanding. Specifically, the body of the turnbuckle is designed as a pair of cylindrical structures A. A female threaded hole is provided on one cylindrical body, and a threaded shaft, such as a long bolt reaching the female threaded hole, is inserted into the other cylindrical body and threaded, thus forming a threaded advance and retraction structure B within the cylindrical body. In this way, by using an electric machine to rotate the exposed head of the cylindrical body around the axis, the body composed of the pair of cylindrical bodies can be extended and retracted. Preferably, if the pair of cylindrical bodies ultimately becomes at least a double-cylinder structure, bending or damage to the threaded cylindrical bodies can be prevented.

[0012] That is, the electric sliding buckle of this utility model is a fastening buckle having a first and a second locking part, such as a hook, that is hooked onto a separately pulled material such as a chain for locking, and a body part that allows the pair of locking parts to slide from the separated position toward the fastened position to pull the pulled component.

[0013] The electric sliding buckle is characterized in that...

[0014] The body section is composed of a single structure A consisting of a pair of first and second cylinders, each having a locking part and sliding along a common axis to extend and retract. The drive mechanism B that extends and retracts the first and second cylinders along the common axis consists of a threaded hole with a female thread installed in one cylinder body section and a threaded shaft that is rotatably inserted into the other cylinder body section from the outer end toward the other end. This constitutes a threaded advance and retraction mechanism that connects the end of the threaded shaft to the threaded hole of the other cylinder. By rotating the head of the threaded shaft exposed from the outer end of the cylinder using an electric drill or the like, the end of the threaded shaft is screwed into the other cylinder through the threaded hole, causing the pair of first and second cylinders to slide from the separated position toward the tightening direction, thereby pulling the pair of locking parts.

[0015] Invention Effects

[0016] According to this invention, a sliding joint is formed by a pair of cylindrical bodies, with a female threaded hole on one cylindrical body. A threaded shaft, which engages with the female threaded hole, is inserted into the other cylindrical body. Rotation of the threaded shaft causes the pair of cylindrical bodies to slide and tighten. Therefore, the tightening action can be performed using an electric drill. This is extremely simpler than using a wrench to turn a turnbuckle, thus reducing operation time.

[0017] In a preferred embodiment, an electric rotary drive mechanism (ED2) is provided at the head of a threaded shaft that is rotatably inserted from the outer end of one of the first and second cylinders toward the other end.

[0018] Furthermore, if an electric drive mechanism is provided at the head of a screw shaft that is rotatably inserted from the outer end of one of the first and second cylinders toward the other end, remote operation can be performed using a wireless mechanism. Figure 14 Therefore, it is advantageous to ensure the safety of sliding fastening operations performed at heights.

[0019] In a preferred embodiment, the outer end of one of the first and second cylinders has a nut, or a slotted or cross-shaped drill groove, that engages with an electric drive mechanism (electric drill) at the outer end of a screw shaft that is rotatably inserted at the other end.

[0020] If one of the first and second cylinders is inserted into the other to form a partial or complete double cylinder, the bending moment of the traction force will not act directly on the screw shaft, thus ensuring superior durability. Even if the traction force applied to the pair of locking parts increases, it can be borne by the inner and outer cylinders, so the drive mechanism located inside will not be directly subjected to torque, and its function will not be damaged even after long-term use.

[0021] If at least one of the pair of locking parts provided in the first and second cylinders is provided on the side of one cylinder, such that the traction line connecting the locking parts of the first and second cylinders intersects the axis of the sliding direction of the first and second cylinders with an intersection angle of α, then the traction force will act with the intersection point of the axis and the traction line as the fulcrum, thereby increasing the traction force. Figure 11 ).

[0022] In the fastener of this invention, the body portion driving the pair of locking parts is composed of a first and a second shaft. The first and second shafts are composed of a pair of cylindrical bodies with locking parts at their ends and of a length appropriate to the fastening distance of the rigging. One cylindrical body is designated as the inner cylindrical body 10, and the other as the outer cylindrical body 20. The inner cylindrical body slides axially relative to the outer cylindrical body and is fitted into the outer cylindrical body in a manner that does not rotate about an axis relative to the outer cylindrical body, thus forming a retractable inner and outer double cylindrical body structure (A). As a result, the durability against the bending moment of traction force becomes superior. The pair of cylindrical bodies can be joined together, or a portion of the pair of cylindrical bodies can be fitted together.

[0023] In this invention, the traction line (P) connected to the locking parts (11, 21) formed in the pair of cylinders (10, 20) intersects the cylinder axis (L) near the center of the axis at an angle of α. When using the pair of locking parts (11, 21) to pull the chain or other rigging, the stress is symmetrical with respect to the cylinder axis L and thus cancels each other out, which helps to improve the traction force. Furthermore, an anti-detachment ring is provided on the inner side of the bottom of the outer cylinder, which is inserted into the screw shaft of the outer cylinder from the bottom of the outer cylinder and is composed of long bolts or the like, to prevent it from falling off the cylinder.

[0024] Furthermore, the locking portions (11, 12) formed on the pair of cylinders are arranged symmetrically with respect to the cylinder axis (L) on opposite sides of the body. The traction line (P) connecting the locking portions (11, 21) intersects the cylinder axis (L) at the fulcrum at the center of the axis, forming an angle α. If the rigging of the chain is pulled by the pair of locking portions, the stress becomes symmetrical with respect to the cylinder axis, thus canceling each other out. Therefore, the retractable inner and outer double cylinder structure will not be damaged. Based on the lever principle with the intersection of the traction line (P) and the axis (L) as the fulcrum, the traction force will increase (the angle between the traction line (P) and the cylinder axis (L) is α). Figure 5 Compare Figure 3 big, Figure 5 The intersection angle (α2) is greater than Figure 3 The cross angle (α1) increases the traction force through rotation with the intersection of the traction line (P) and the axis (L) as the fulcrum. Furthermore, an anti-slip device is provided on the inner side of the bottom of the outer cylinder, where a screw shaft, represented by a long bolt, is inserted into the outer cylinder from the bottom, thus facilitating easy attachment to chains and other rigging. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view illustrating the principle of the first embodiment of the sliding back buckle of this utility model, showing the case where a pair of cylindrical structures consisting of a large-diameter first cylindrical body (accommodating cylinder) and a small-diameter second cylindrical body (guide cylinder) are slid together so that the second cylindrical body is embedded in the first cylindrical body.

[0026] Figure 2 This is a cross-sectional view illustrating the principle of the second embodiment of the sliding buckle of this utility model, showing the situation where a pair of cylindrical structures consisting of a first cylindrical body (accommodating cylinder) and a second cylindrical body (guide cylinder) of the same diameter slide together to connect the two cylindrical bodies.

[0027] Figure 3 This is a cross-sectional view illustrating the principle of the third embodiment of the sliding buckle of this utility model, showing the case where a pair of cylindrical structures consisting of a small-diameter first cylindrical body (accommodating cylinder) and a large-diameter second cylindrical body (guide cylinder) slides, thereby causing the second cylindrical body to fit onto the first cylindrical body.

[0028] Figure 4 This is a cross-sectional diagram illustrating the principle of the fourth embodiment of the sliding buckle of this utility model, showing the situation where a pair of cylindrical structures consisting of a small-diameter first cylindrical body (accommodating cylinder) and a large-diameter second cylindrical body (guide cylinder) slide together using their screw-on structure to achieve a fitting.

[0029] Figure 5 This is a cross-sectional view illustrating the principle of the fifth embodiment of the sliding buckle of this utility model. It shows a case where the first cylinder uses a conventional turnbuckle (receiving cylinder) and a second hook is provided on the second cylinder, causing the pair of cylinder structures to slide so that the second cylinder is fitted onto the first cylinder.

[0030] Figure 6 It means Figure 5 A cross-sectional illustration of a modified example in which the first hook is fixed to the receiving cylinder, i.e., the turnbuckle.

[0031] Figure 7 This is an exploded view of the electric sliding buckle involved in this utility model, showing that it is composed of a first cylinder (10), a second cylinder (20) and a threaded shaft, i.e., a long bolt (30).

[0032] Figure 8 This is an assembly cross-sectional view of the electric sliding buckle (first embodiment) involved in this utility model, showing a state in which it is composed of a first cylinder (10) and a second cylinder (20) and has a screw shaft (30) inserted inside, and is reduced in size.

[0033] Figure 9 This is a perspective view showing the extended state (a) and the reduced state (b) of the first embodiment of the electric sliding buckle of this utility model.

[0034] Figure 10 This is an instruction diagram of the electric sliding buckle of this utility model, showing the working state of changing a pair of ropes (R1, R2) from a slack state (a) to a taut state (b) by using an electric drill (ED1).

[0035] Figure 11 This is the second embodiment where the angle between the axis (L) and the traction line (P) is increased from α1 to α2.

[0036] Figure 12 This is the third embodiment of the electric sliding buckle involved in this utility model, which shows a structure in which the hook parts 11 and 21 are separately set from the end parts 10b and 20b of the inner cylinder 10 and the outer cylinder 20, respectively, thereby improving the tensile strength.

[0037] Figure 13 yes Figure 12 Assembly sectional view.

[0038] Figure 14 This is a diagram illustrating the remote operation of the electric sliding buckle of this utility model, showing an electric drill mechanism (ED2) installed on the electric sliding buckle and the operator remotely operating the electric drill mechanism using a wireless switch to change a pair of ropes (R1, R2) from a slack state (a) to a taut state (b). Detailed Implementation

[0039] The present invention will now be described in detail with reference to the accompanying drawings.

[0040] Figure 1 This is a cross-sectional view illustrating the principle of the first embodiment of the present invention. The structure comprises a first hook and a second hook respectively disposed on a first cylindrical body (receiving cylinder) with a larger diameter and a second cylindrical body (guide cylinder) with a smaller diameter. A first nut is provided at the mating end of the second cylindrical body as a female threaded hole. A first long bolt is inserted from the side of the first cylindrical body opposite to the mating end toward the mating end as a threaded shaft, with its first helical thread end threaded onto the first nut. Then, the exposed head of the first long bolt is used to rotate the first long bolt, causing the guide cylinder to be inserted into the receiving cylinder, thereby forming a double-cylinder structure.

[0041] Figure 2 This is a cross-sectional view illustrating the principle of the second embodiment of the present invention. It is configured such that a first hook and a second hook are respectively disposed on a first cylindrical body (receiving cylinder) and a second cylindrical body (guide cylinder) of the same diameter. A second nut is provided as a female threaded hole at the mating end of the first cylindrical body. A second long bolt is inserted as a threaded shaft from the side of the second cylindrical body opposite to the mating end, and then the end of its second helical shaft thread is screwed into the second nut. The exposed head of the second long bolt is used to rotate the second long bolt, thereby forming a cylindrical structure in which the guide cylinder and the receiving cylinder are mated.

[0042] Figure 3 This is a cross-sectional view illustrating the principle of the third embodiment of the present invention. It is configured such that a first hook and a second hook are respectively disposed on a first cylindrical body (receiving cylinder) with a smaller diameter and a second cylindrical body (guide cylinder) with a larger diameter. A second nut is provided at the mating end of the first cylindrical body as a female threaded hole. A second long bolt is inserted from the side of the second cylindrical body opposite to the mating end towards the mating end as a threaded shaft, so that the end of its second helical shaft is threaded onto the second nut. Then, the exposed head of the second long bolt is used to rotate the second long bolt, causing the guide cylinder to fit onto the receiving cylinder, thereby forming a double-cylinder structure.

[0043] Figure 4 This is a cross-sectional view illustrating the principle of the fourth embodiment of the present invention. It is configured such that a first hook and a second hook are respectively disposed on a first cylindrical body (receiving cylinder) with a small diameter and a second cylindrical body (guide cylinder) with a large diameter. A third nut and a second nut are provided as female threaded holes at the middle and the docking end of the first cylindrical body. A first long bolt is inserted from the side of the first cylindrical body opposite to the docking end toward the docking end as a threaded shaft, with the end of its first helical thread threaded into the third nut in the middle. A second long bolt is inserted from the side of the second cylindrical body opposite to the docking end toward the docking end as a threaded shaft, with the end of its second helical thread thread threaded into the second nut. Then, by utilizing the exposed head of one or both of the first and second long bolts, one or both of the first and second long bolts are rotated, causing the guide cylinder to fit onto the receiving cylinder, thereby forming a double-cylinder structure.

[0044] Figure 5This is a cross-sectional view illustrating the principle of the fifth embodiment of the present invention. It is configured such that the first cylindrical body uses a conventional turnbuckle (receiving cylinder), and the first hook uses one hook of the turnbuckle. The second hook is removed from the turnbuckle, and the remaining female threaded hole serves as a second nut. The second hook is mounted on the second cylindrical body (guide cylinder), and a second long bolt is inserted from the side of the second cylindrical body opposite to the mating direction end toward the mating end as a threaded shaft. The end of its second helical thread is screwed into the second nut. Then, the second long bolt is rotated using its exposed head, causing the guide cylinder to fit onto the receiving cylinder, thus forming a double-cylinder structure. Regarding the first hook, its length can be changed by rotating it relative to the receiving cylinder. Furthermore, Figure 6 It means Figure 5 A cross-sectional view illustrating a modified example where the first hook is fixed to the receiving cylinder (i.e., a turnbuckle). Other structures are similar. Figure 5 Since they are the same, the explanation is omitted.

[0045] Figures 7 to 13 This describes a preferred embodiment of the present invention. The electric drill-driven turnbuckle of the present invention is a fastener having a pair of locking parts such as hooks for hanging on chains or other rigging, and a body part for pulling the pair of locking parts toward the tension direction of the chains or other rigging. It is composed of a threaded advance and retraction drive mechanism B, which has a retractable body part A for fitting long cylindrical bodies 10 and 20 of large and small diameters together to form an inner and outer double cylindrical body structure, and a shaft 30 for extending and retracting the pair of cylindrical bodies 10 and 20 along the axis.

[0046] The body section A of the cylindrical structure consists of a pair of cylindrical sections 10 and 20, made of iron square tubing with a thickness of 2mm and a thickness of 10mm on one side, and iron square tubing with a thickness of 2mm and a thickness of 14mm on one side. Depending on the application of the chain or wire rope, it has two or more lengths. Here, a drill-driven turnbuckle is provided with a distance of 0.5 to 1 meter between a pair of locking parts 11 and 12, with a total length of 1.0 to 1.5 meters when using the short inner and outer sections and a total length of 0.5 to 1 meter when using the long inner and outer sections.

[0047] One of a pair of cylinders 10 and 20 serves as the inner cylinder 10, and the other as the outer cylinder 20. The inner cylinder 10 is fitted into the outer cylinder 20 in a manner that allows it to slide axially along its length and has a cross-section that does not rotate about the axis, thus forming a retractable monolithic structure A. Here, square tubes of different sizes with square cross-sections are used, but a pair of cylinders with elliptical cross-sections can also be used. Furthermore, one or more radially protruding lines extending along the length direction can be formed on the outer surface of the inner cylinder 10, while a concave cross-section groove extending axially and fitting with these lines can be provided on the inner surface of the outer cylinder 20. In short, it is preferable that the cylinder does not rotate about the axis simultaneously with the screw-in shaft 30 screwed into the inner cylinder 10.

[0048] Figure 9 This invention relates to the extended and minimized states of the sliding buckle. The bolt head, protruding from the bottom of the outer cylinder, is rotated about an axis, and driven by an internal threaded advance / retreat mechanism B (not shown). Figure 9 The most elongated state of (a) shrinks to the least elongated state. Figure 9 (b) Figure 10 This indicates the state of a fastening operation performed using telescopic motion. Figure 10 Figure (a) shows the working state of using the slip buckle SB of this invention to tighten slack ropes R1 and R2. One hook 11 of the slip buckle SB at its most extended state is hooked onto rope R1, and the other hook 21 is hooked onto rope R2. Next, an electric machine ED1, such as an impact drill, is used to rotate the exposed head 31 of the long bolt protruding from the bottom of the outer cylinder 20, centered on the axis of the screw shaft. In conventional turnbuckles, a wrench perpendicular to the body is required to rotate the body. However, in this invention, the front end of the impact drill can be placed parallel to the ropes and used to rotate the exposed bolt head 31 of the long bolt 30, causing the external thread 30a of the long bolt 30 to screw into the threaded hole 12 at the bottom of the inner cylinder. This allows the pair of ropes to be tightened as... Figure 10 As shown in (b).

[0049] In a preferred embodiment of the electric sliding buckle of this utility model, in the cylindrical structure A composed of an inner cylinder 10 and an outer cylinder 20, the hook 11 located at the end of the inner cylinder 10 and the hook 21 located at the lower end of the outer cylinder 20 are symmetrical with respect to the axis L extending along the length direction of the cylindrical structure A. The traction line P formed by the pair of hooks 11 and 21 forms a crossing angle α1 with respect to the aforementioned axis L and intersects the cylindrical structure at the center of the axial direction of the cylindrical structure A. Figure 9 Therefore, the locking parts 11 and 21 formed on the pair of cylinders 10 and 20 are located symmetrically with respect to the cylinder axis L. The stress when the chain or other rigging is pulled by the pair of locking parts is symmetrical with respect to the cylinder axis L and thus cancels each other out.

[0050] Figure 11 This indicates a preferred second embodiment. The hook 11 of the inner cylinder 10 is then... Figure 9 The position is moved to the side to serve as hook 11', such that the angle α2 between the traction line P formed by hook 11' and hook 21 and the aforementioned axis L is greater than α1. Therefore, due to the angle ratio... Figure 9 As the situation increases, the traction force applied to the pair of hooks will be applied to the double cylindrical structure A with the intersection of the traction line P and the axis L as the fulcrum, thus causing it to rotate. Therefore, based on the lever principle with the intersection as the fulcrum, the traction force will be easily applied.

[0051] Figure 12 The preferred third embodiment is shown. The end and bottom caps 10b and 20b of the inner cylinder 10 and outer cylinder 20 are separately provided from the body parts 10a and 20a. Hooks 11 and 12 are welded to the caps 10b and 20b in a laterally protruding manner and then fixed to the body parts 10a and 20a by welding. Alternatively, they can be fixed by threads. Thus, the pair of hooks have strong traction strength relative to the cylinder structure A, and the cylinder structure A rotates around the intersection of the traction line P and the axis L, utilizing a lever effect. Furthermore, the internal thread 12 can also be fixed to the bottom of the inner cylinder 10 by welding. The assembled structure is shown below. Figure 13 .

[0052] In a preferred embodiment of the electric sliding buckle of this utility model, the electric sliding buckle (SB) includes an electric drill drive mechanism (E2) driven by a motor (M), the electric drill drive mechanism (E2) includes a battery (Ba), and the drive motor (M) is remotely operated via a wired operating line or a wireless switch mechanism (S) that selects a specific frequency for wireless operation, thereby causing the cylinder having a pair of locking parts to slide.

[0053] In this utility model, such as Figure 10 As shown, the electric drill ED1 can easily operate the electric sliding thread advance and retraction mechanism for rotation, but as... Figure 14 As shown, if a drill mechanism ED2, consisting of a battery Ba and an electric motor M and equipped with an antenna Ah, is installed at the end of the electric slide, the operator can remotely drive the electric slide by operating a wireless switch S to send an operation signal. When installing electric slides at heights or in multiple locations for traction, the tightening operation can be performed more safely and simply compared to manually operating the electric drill ED1. In this case, when operating multiple electric slides with a single wireless switch, it is preferable to change the frequency of the operation signal to operate a specific electric slide.

[0054] This utility model not only shows Figures 1 to 6 The principle structure is also shown. Figures 7 to 13 The specific structures of the first to third embodiments are all composed of a pair of telescopic cylindrical structures A and a mechanism B that drives the pair of cylindrical structures to move forward and backward by screwing them together inside. The pair of hooks 11 and 21 are configured such that the angle α between the axis L of the body part A constituting the inner and outer cylinders and the traction line P connecting the pair of hooks 11 and 21 is increased. This is effective in increasing the traction force, but the effective value of increasing the angle α can be determined by considering the traction force and the strength of the cylindrical structure constituting the body part.

[0055] Symbol Explanation

[0056] SB - Sliding buckle, P - Traction line, ED1 - Electric drill, ED2 - Electric drill mechanism, A - Telescopic cylinder structure, B - Screw-in and out drive structure, L - Axis, α, α1, α2 - Cross angle, 10 - Inner cylinder, 11 - First hook, 20 - Outer cylinder, 21 - Second hook, 30 - Screw-in shaft (long bolt), 31 - Bolt head, 32 - Anti-loosening part.

Claims

1. An electric slide fastener, which is a fastening buckle having first and second clamping portions that are clamped to a pulled material separated from each other, and a body portion that slides the two clamping portions from a separated position toward a fastened position to pull the pulled member, the electric slide fastener being characterized in that the body portion is composed of a pair of first and second cylindrical bodies each having a clamping portion and sliding along a common axis to be extended and contracted, a driving mechanism that extends and contracts the first and second cylindrical bodies along the common axis is composed of a threaded hole body having a female screw mounted in one cylindrical body, and a screwing shaft body having a male screw rotatably inserted into the other cylindrical body from an outer end toward the other end and protruding from the other end, thereby constituting a screwing advancing and retreating mechanism that links the tip of the screwing shaft body to the threaded hole body of the other cylindrical body, a head portion of the screwing shaft body exposed from the outer end of the cylindrical body is rotated by an electric drill to slide the pair of first and second cylindrical bodies from the separated position toward the fastened direction to pull the pair of clamping portions.

2. The electric slide fastener according to claim 1, characterized in that one of the first and second cylindrical bodies is inserted into the other to constitute a partial or integral double cylindrical body.

3. The electric slide fastener according to claim 1, characterized in that at least one of the pair of clamping portions provided on the first and second cylindrical bodies is provided on the side portion of the cylindrical body, a pulling line that connects the clamping portions of the first and second cylindrical bodies crosses the axis of the sliding direction of the first and second cylindrical bodies, and the crossing angle is a.

4. The electric slide fastener according to claim 1, characterized in that the head portion exposed from the outer end of the screwing shaft body rotatably inserted into the other from the outer end toward the other of one of the first and second cylindrical bodies has a nut engaged with the electric drill (ED1), or a slot for a straight or cross drill.

5. The electric slide fastener, characterized in that one of the body portions that drive a pair of clamping portions composed of first and second shaft bodies is an inner cylindrical body (10) and the other is an outer cylindrical body (20), the inner cylindrical body is slid along the axis with respect to the outer cylindrical body and is fitted to the outer cylindrical body in a manner that the inner cylindrical body does not rotate around the axis with respect to the outer cylindrical body to constitute an extendable and contractible inner-outer double cylindrical body structure (A).

6. The electric slide fastener according to claim 5, characterized in that the inner-outer double cylindrical body structure (A) is composed of a pair of first and second cylindrical bodies each having a clamping portion and sliding along a common axis to be extended and contracted, a driving mechanism that extends and contracts the first and second cylindrical bodies along the common axis is composed of a threaded hole body having a female screw mounted in one cylindrical body, and a screwing shaft body having a male screw rotatably inserted into the other cylindrical body from an outer end toward the other end and protruding from the other end, thereby constituting a screwing advancing and retreating mechanism that links the tip of the screwing shaft body to the threaded hole body of the other cylindrical body, a head portion of the screwing shaft body exposed from the outer end of the cylindrical body is rotated by an electric drill to slide the pair of first and second cylindrical bodies from the separated position toward the fastened direction to pull the pair of clamping portions.

7. The electric slide fastener according to claim 6, characterized in that one of the first and second cylindrical bodies is inserted into the other to constitute a partial or integral double cylindrical body.

8. The electric slide fastener according to claim 6, characterized in that at least one of the pair of clamping portions provided on the first and second cylindrical bodies is provided on the side portion of the cylindrical body, a pulling line that connects the clamping portions of the first and second cylindrical bodies crosses the axis of the sliding direction of the first and second cylindrical bodies, and the crossing angle is a.

9. The electric slide fastener according to claim 6, characterized in that the head portion exposed from the outer end of the screwing shaft body rotatably inserted into the other from the outer end toward the other of one of the first and second cylindrical bodies has a nut engaged with the electric drill (ED1), or a slot for a straight or cross drill. ​ ​ ​ The extension and contraction driving mechanism (B) of the inner-outer double cylinder structure (A) is a screwing in and out structure, which is composed of a female screw hole (12) provided at the bottom of the inner cylinder and a long screw bolt, i.e. screwing shaft (30), with an external thread portion, which reaches the female screw hole of the inner cylinder from the bottom of the outer cylinder through the inside of the outer cylinder. The screwing shaft (30) is inserted into the outer cylinder (20) and screwed into the female screw hole (12) at the bottom of the inner cylinder (10). The exposed head portion (31) of the screwing shaft (30) exposed from the bottom of the outer cylinder (10) is rotated by an electric machine (ED) to make the female screw hole at the bottom of the inner cylinder go in and out, thereby enabling the inner cylinder (10) to extend and contract in the outer cylinder (20), The pulling line (P) formed by the locking portions (11, 21) of the pair of cylinders (10, 20) intersects the cylinder axis (L) near the axis center and the angle formed is α. When a pair of locking portions (11, 21) is used to pull the harness, the stress acts on the intersection of the pulling line (P) formed by the pair of locking portions (11, 21) and the cylinder axis (L) as a fulcrum.

6. The electrically driven slide fastener according to claim 5, wherein The inside of the bottom of the outer cylinder of the long screw bolt, i.e. screwing shaft (30), inserted into the outer cylinder has an anti-falling ring (32) on the inside of the bottom of the outer cylinder to prevent falling from the cylinder (20).

7. The electrically driven slide fastener according to claim 6, wherein One of the body portions composed of the first and second shafts that drive a pair of locking portions is the inner cylinder (10) and the other is the outer cylinder (20), enabling the inner cylinder to slide in the axial direction with respect to the outer cylinder and to be fitted into the outer cylinder in a manner that the inner cylinder does not rotate around the axis with respect to the outer cylinder, thereby constituting an inner-outer double cylinder structure (A) that can extend and contract. The extension and contraction driving mechanism (B) of the inner-outer double cylinder structure (A) is a screwing in and out structure, which is composed of a female screw hole (12) provided at the bottom of the inner cylinder and a long screw bolt, i.e. screwing shaft (30), with an external thread portion, which reaches the female screw hole of the inner cylinder from the bottom of the outer cylinder through the inside of the outer cylinder. The screwing shaft (30) is inserted into the outer cylinder (20) and screwed into the female screw hole (12) at the bottom of the inner cylinder (10). The exposed head portion (31) of the screwing shaft (30) exposed from the bottom of the outer cylinder (10) is rotated by an electric machine (ED) to make the female screw hole at the bottom of the inner cylinder go in and out, thereby enabling the inner cylinder (10) to extend and contract in the outer cylinder (20), The locking portions (11, 21) formed on the pair of cylinders (10, 20) and the cover portions (10b, 20b) of the cylinder end portions are formed separately and fixed to the body portion (B) of the double cylinder formed by the pair of cylinders (10, 20) in a manner that they protrude outward in a point-symmetrical state, so that the intersection angle α of the pulling line (P) formed by the pair of locking portions (11, 21) and the axis (L) extending in the length direction of the body portion (B) becomes larger.

8. The electrically driven slide fastener according to claim 7, wherein A fall-preventing ring (32) is provided on the inner side of the bottom of the outer cylinder body into which the long bolt, i.e., the screwing shaft body (30), is inserted, to prevent the cylinder body (20) from falling off.

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