JP7508143B2 - Torsion bar rotation movement type locking device - Google Patents

Description

The present invention relates to a rotating and movable locking device for a torsion bar, which comprises a torsion bar and a rotating and movable locking device that is locked to a required portion of the torsion bar in the longitudinal direction.

An example of a torsion rod in which a plurality of helical ridges that twist in the same direction and at the same pitch around the axis of the rod body are provided on the outer surface of the rod body at required intervals around the circumference of the rod body is described in Patent Documents 1 and 2.

Figure 15 of Patent Document 1 describes a configuration in which a torsion rod of this configuration is used as a straight support and a horizontal connecting rod, and the two are connected by abutting the parts where the helical ridges are formed. The connection is made by connecting the intersection of the straight support and the horizontal connecting rod using, for example, a hook band that is elastically deformable and can be opened and closed.

As shown in FIG. 15 of Patent Document 1, the hook band is formed by bending a single elastic metal wire, and a pair of left and right pressing wire parts that press the second bar toward the first bar are connected to both left and right ends of a U-shaped bending part that fits the first bar and supports the back side of the first bar, with a required distance between them and extending in the approximate length direction of the first bar. At the tips of both pressing wire parts, arc-shaped engagement pieces that can abut against the back side of the first bar in an elastically pressed state are provided in opposite directions with a shift in position in the length direction of the first bar, and both pressing wire parts are provided with a single pressing bent part that is bent in an arc shape to follow the arc-shaped surface part of the second bar that overlaps the back side of the first bar.

Therefore, when connecting the intersection of the straight support and the horizontal connecting rod, a strong force was required to elastically deform the hook band, which required an opening and closing operation, and the connection was not easy. Furthermore, when changing the mounting position of the horizontal connecting rod relative to the straight support, the hook band in the attached state had to be elastically deformed and removed, and then the mounting position had to be changed as required, and the hook band had to be elastically deformed again as required and attached, so such a position change operation was not easy. In addition, the fastening was performed by elastically deforming the hook band, which was formed by bending a metal wire, and there was a risk of injury from the tip of the arc-shaped engagement piece during the elastic deformation.

Patent Document 2 describes a plant support made of a solid steel bar with a polygonal cross section that has been cold drawn and twisted, with each side surface in the longitudinal direction extending in a spiral shape around the axis of the steel bar by the twisting process. Patent Document 2 also describes that a cross bar for connecting the steel bars to each other is housed and a hook for elastically clamping the cross bar in the housed state is fixed to the steel bar by welding. However, when the hook is fixed to the steel bar by welding, not only does it increase the manufacturing cost of the plant support, but it also has the problem that the position of the welded hook cannot be changed.

JP 2017-219164 A JP 2002-119144 A

The present invention was developed in consideration of the above-mentioned problems of the conventional art, and aims to provide a rotating and movable locking device for a torsion bar that allows easy, accurate, and safe attachment of an object to a desired location along the length of a torsion bar that has a helical ridge on the bar body, and that also allows easy change of the attachment position of the object.

In order to solve the above problems, the present invention employs the following means.
That is, a first aspect of the rotatable locking device for a torsion bar according to the present invention is a rotatable locking device for a torsion bar comprising a torsion bar and a rotatable locking tool that is locked to a required portion of the torsion bar in the longitudinal direction. The torsion bar is provided with a plurality of helical ridges that twist in a spiral manner around the axis of the rod body in the same direction and at the same pitch, at required intervals in the circumferential direction of the rod body, and the helical ridges are provided over the entirety or a portion of the longitudinal direction of the rod body. The locking tool has a cylindrical body provided with an insertion hole through which the torsion bar can be inserted, and the inner peripheral surface of the insertion hole is provided with guide ridges that can abut against the facing side surfaces of adjacent helical ridges when viewed with the torsion bar inserted into the insertion hole. The spiral protrusion portion allows the locking device to rotate forward and backward around the axis of the cylindrical body due to the guiding action of the guide protrusion, thereby making it possible to move the locking device in one direction or the opposite direction when viewed in the longitudinal direction of the torsion bar.

A second aspect of the torsion bar rotational locking device of the present invention is a torsion bar rotational locking device comprising a torsion bar and a rotational locking tool that is locked to a required portion of the torsion bar in the longitudinal direction. The torsion bar has a plurality of helical ridges that are twisted in a spiral shape around the axis of the rod body in the same direction and at the same pitch, and the helical ridges are provided at required intervals in the circumferential direction of the rod body, and the helical ridges are provided over the entire or partial longitudinal direction of the rod body. The locking tool has a cylindrical body with an insertion hole through which the torsion bar can be inserted, and when viewed with the torsion bar inserted into the insertion hole, the inner peripheral surface of the insertion hole is provided with guide ridges that clamp the helical ridges on both the left and right sides in the elongated direction. The helical ridge portion allows the locking device to rotate forward and backward around the axis of the cylindrical body due to the guiding action of the guide protrusion, thereby allowing the locking device to move in one direction or the opposite direction as viewed in the longitudinal direction of the torsion bar.

A third aspect of the torsion bar rotational movement locking device according to the present invention is a torsion bar rotational movement locking device comprising a torsion bar and a rotational movement locking device that is locked to a required portion of the length of the torsion bar. The torsion bar has a plurality of helical ridges that are twisted in the same direction and at the same pitch around the axis of the rod body at required intervals in the circumferential direction of the rod body, and the helical ridges are provided on the entire or part of the length of the rod body. The locking device has a cylindrical body with an insertion hole through which the torsion bar can be inserted, and when viewed with the torsion bar inserted in the insertion hole, a guide protrusion is provided on the inner peripheral surface of the insertion hole, located between the adjacent helical ridges and extending in the axial direction of the cylindrical body, with one end of the guide protrusion abutting one of the opposing side surfaces of the adjacent helical ridges, and the other end of the guide protrusion abutting the other of the opposing side surfaces. The guide action of the guide protrusion at the helical ridge allows the locking device to rotate forward and backward around the axis of the cylindrical body, and thus the locking device can be moved in one direction or the opposite direction as viewed in the length direction of the torsion bar.

A fourth aspect of the torsion bar rotational movement locking device according to the present invention is a torsion bar rotational movement locking device comprising a torsion bar and a rotational movement locking device that is locked to a required portion of the length of the torsion bar. The torsion bar has a plurality of helical ridges that twist in the same direction and at the same pitch around the axis of the rod body at required intervals in the circumferential direction of the rod body, and the helical ridges are provided over the entire or part of the length of the rod body. The torsion bar has a resin-coated portion formed by coating the outer surface of a metal core tube with resin, and the resin-coated portion forms a helical ridge that twists in a helical manner around the axis of the rod body over the entire or part of the length of the rod body, and the core tube is not twisted. The locking device has a cylindrical body with an insertion hole through which the torsion bar can be inserted, and when viewed with the torsion bar inserted in the insertion hole, a guide protrusion is provided on the inner peripheral surface of the insertion hole, located between the adjacent helical ridges and extending in the axial direction of the cylindrical body. One end of the guide protrusion is configured to abut one of the opposing side surfaces of the adjacent helical ridges, and the other end of the guide protrusion is configured to abut the other of the opposing side surfaces. The guide action of the guide protrusion at the helical ridge allows the locking device to rotate forward and backward around the axis of the cylindrical body, and the locking device can be moved in one direction or the opposite direction when viewed in the longitudinal direction of the torsion bar.

The fifth aspect of the torsion bar rotating and moving locking device of the present invention is any one of the first to fourth aspects, characterized in that the torsion bar is a straight rod-shaped support.

A sixth aspect of the rotatable locking device for a torsion bar according to the present invention is a rotatable locking device for a torsion bar, comprising a torsion bar and a rotatable locking tool that is locked to a required portion of the torsion bar in the longitudinal direction. The torsion bar has straight rod-shaped support sections spaced at a required distance from each other at their upper ends, which are connected to each other by an arch-shaped connecting section that forms an inverted U-shape. The torsion bar has a resin-coated section formed by coating the outer surface of a metal core tube with resin, and the resin-coated section forms a helical ridge that twists helically around the axis of the rod body over the entire or part of the longitudinal direction of the rod body , and the core tube is not twisted. The locking device has a cylindrical body with an insertion hole through which the torsion bar can be inserted, and when viewed with the torsion bar inserted into the insertion hole, a guide protrusion is provided on the inner peripheral surface of the insertion hole, located between adjacent helical ridges and extending in the axial direction of the cylindrical body, one end of the guide protrusion abuts against one of the opposing side surfaces of the adjacent helical ridges, and the other end of the guide protrusion abuts against the other of the opposing side surfaces. The guide action of the guide protrusion by the helical ridge allows the locking device to rotate forward and backward around the axis of the cylindrical body, and thus the locking device can be moved in one direction or the opposite direction as viewed in the longitudinal direction of the torsion bar.

The seventh aspect of the torsion bar rotational movement locking device according to the present invention is any one of the first, second, third, fourth or sixth aspects, characterized in that the cylindrical body is divided into two halves along a plane including the axis, and the cut surfaces of the two halves are integrated together.

The eighth aspect of the torsion bar rotating locking device of the present invention is the first, second, third, fourth or sixth aspect, characterized in that the helical ridge portion is set to 3 to 6 threads.

The ninth aspect of the torsion bar rotating and moving locking device according to the present invention is any one of the first, second, third, fourth or sixth aspects, characterized in that the outer surface of the locking device is provided with an attachment portion for attaching another object.

The present invention provides the following excellent effects.
The torsion bar rotatable locking device of the present invention allows easy, accurate and safe attachment of an object to a desired location in the length direction of the torsion bar having the helical ridge on the rod body. Also, the attachment position of the object can be easily changed.

1 is a front view illustrating the configuration of a torsion bar rotational movement type locking device according to the present invention together with an assembly procedure thereof. FIG. FIG. 2 is an exploded perspective view of the torsion bar and the locking device. FIG. 2 is a cross-sectional view of a torsion bar. FIG. 10 is an explanatory diagram illustrating the function of the locking tool. FIG. FIG. 11 is an explanatory diagram illustrating a garden fence constructed using posts to which a torsion bar rotating and moving locking device is applied. FIG. 13 is an explanatory diagram illustrating a method for attaching the locking device to the torsion bar. FIG. 13 is an explanatory diagram illustrating a torsion bar rotational movement type locking device configured using an arch-shaped torsion bar. FIG. 13 is a front view illustrating the configuration of both lower ends of the arch-shaped torsion bar. FIG. 1 is an explanatory diagram illustrating a garden fence constructed using arch-shaped torsion bars. 13 is an explanatory diagram illustrating another aspect of the guide protrusion provided on the fastener. FIG. 13A and 13B are explanatory views illustrating other aspects of the guide protrusion provided on the fastener. 13A and 13B are explanatory views illustrating other aspects of the guide protrusion provided on the fastener. 13A and 13B are explanatory views illustrating other aspects of the guide protrusion provided on the fastener. FIG. 2 is an explanatory diagram illustrating a two-piece cylindrical body. 13 is an explanatory diagram illustrating another aspect of the attachment portion provided on the fastener. FIG. FIG. 13 is an explanatory diagram illustrating a net tensioning section constructed using posts to which a torsion bar rotating and moving locking device is applied. FIG. 11 is an explanatory diagram illustrating another embodiment of the mounting portion provided on the fastener, in a state in which the fastener is fastened to a cross member serving as a torsion bar.

In Figures 1 and 2, the torsion bar rotating locking device 1 according to the present invention comprises a torsion bar 2 and a rotating locking device 3 that is locked to a required portion of the torsion bar 2. For example, it is used to construct a straight rod-shaped post (hereinafter referred to as a post) 6 that can be used to construct a garden fence 5 as shown in Figure 6.

As shown in Figures 1 to 3, the torsion bar 2 has a plurality of helical ridges 10 on the outer surface 9 of the rod body 7, which are helically twisted in the same direction and at the same pitch around the axis L1 of the rod body 7, at required intervals in the circumferential direction of the rod body 7, and the helical ridges 10 are provided over the entire or partial length of the rod body 7. As shown in Figures 2 and 4, the locking device 3 has a cylindrical body 12 provided with an insertion hole 11 through which the torsion bar 2 can be inserted. When the torsion bar 2 is inserted into the insertion hole 11, the inner peripheral surface 13 of the insertion hole 11 is provided with the guide ridges 16, which can abut against the facing side surfaces 15, 15 (Figure 5) of the adjacent helical ridges 10, 10, as shown in Figure 4. The helical ridge 10 allows the locking device 3 to rotate forward and backward around its axis (axis L2 of the cylindrical body 12) due to the guiding action of the guide protrusion 16, and this allows the locking device 3 to move in one direction or the opposite direction as viewed in the length direction of the torsion bar 2 (axis L1 direction of the rod main body 7). In this embodiment, it can be moved upward or downward. As shown in Figures 1 and 2, an attachment portion 20 for attaching another object is provided on the outer surface portion 17 of the locking device 3. This will be explained in detail below.

The torsion rod 2 is used as the support 6 that constitutes the garden fence 5, for example, as shown in FIG. 6. In this embodiment, as shown in FIG. 1, the helical ridge portion 10 is provided continuously in the middle portion 23 of the rod body 7, excluding the upper end portion 21 and the lower end portion 22 in the longitudinal direction.

The overall length of the support 6 is set to, for example, about 1150 mm, and both the upper end portion 21 and the lower end portion 22 are configured as square-shaped shaft portions 27 with a square cross section, each having a length of about 110 mm. The upper and lower square-shaped shaft portions 27 have respective faces 29, 29 (Figs. 1 and 2) that are flush when viewed in the vertical direction.

As shown in Figures 2 and 3, the helical ridge portion 10 is formed by twisting the four corner portions 32, 32, 32, 32 of the square shaft portion 27 and the surface portion 33 between the adjacent corner portions 32, 32 uniformly in a spiral shape with the same direction and pitch around the axis L1 of the rod body 7, and is provided in four stripes.

In this embodiment, the torsion rod 2 has a resin-coated outer surface 36 of a core tube 35 made of metal such as steel coated with resin to form a resin-coated portion 37. The resin-coated portion 37 forms the helical ridge 10 in the middle portion 23 of the rod body 7, which is twisted in the same direction and at the same pitch around the axis L1 of the rod body 7, and the core tube 35 is not twisted. The thickness of the thin-walled portion 39 (Figure 3) of the resin-coated portion 37 is set to about 0.4 mm, and the maximum thickness of the corner portion (thick-walled portion with a rectangular cross section) 32 (Figure 3) is set to about 1.5 mm. The resin-coated portion 37 having this configuration is twisted in a helical manner around the axis L3 of the core tube 35 (axis L1 of the rod body 7) in the length direction of the core tube 35 that constitutes the middle portion 23, thereby forming the helical ridge 10.

In this embodiment, the locking device 3 is integrally formed from synthetic resin, and has the tubular body (a cylindrical tubular body in this embodiment) 12 with the insertion hole 11 through which the torsion bar 2 can be inserted, as shown in Figures 2 and 4. The outer diameter of the tubular body 12 is, for example, about 16.8 mm, and its inner diameter is set to about 10.8 mm. When the torsion bar 2 is inserted into the insertion hole 11, the inner peripheral surface portion 13 of the insertion hole 11 is provided with the linear guide protrusions 16 located between the adjacent helical ridges 10, 10 and extending in the direction of the axis L2 of the tubular body 12. In this embodiment, as shown in Figure 4, four guide protrusions 16 are provided on the inner peripheral surface portion 13 at an angle pitch of 90 degrees so that they are positioned all between the adjacent helical ridges 10, 10. One end (upper end in FIG. 5) 42 of each guide protrusion 16 abuts against one of the opposing side surfaces 15, 15 of the adjacent helical ridges 10, 10 (the side surface of the helical ridge 10a on the left side in FIG. 5) 15a, and the other end (lower end in FIG. 6) 43 of the guide protrusion 16 abuts against the other of the opposing side surfaces 15, 15 (the side surface of the helical ridge 10b on the right side in FIG. 5) 15b.

The locking device 3 having such a configuration is attached to the torsion bar 2 at the outer end 44 of the square shaft portion 27 (FIG. 1(A)). At that time, as shown in FIG. 7, each of the four guide protrusions 16, 16, 16, 16 is arranged to face each surface 29 of the square shaft portion 27. In this state, as shown by the arrow in FIG. 1(B), the locking device 3 is slid from the outer end 44 of the square shaft portion 27 toward its inner end 45, and then the locking device 3 is moved toward the intermediate portion 23. In the intermediate portion 23, the locking device 3 can move in one direction or the opposite direction (the direction shown by the arrows F1 and F2 in FIG. 1(C)) as viewed in the length direction while rotating forward and backward around its axis L3 as shown by the arrow in FIG. 4 due to the guide action of the guide protrusions 16. This allows the locking device 3 to be easily and accurately moved to the desired position on the torsion bar 2. Once the locking device 3 is moved to the desired position, it can be prevented from rotating and therefore can remain in place.

The attachment portion 20 provided on the outer surface portion 17 of the fastener 3 is provided integrally with the outer surface portion 17 at opposing portions 17a, 17b of the outer surface portion 17 of the cylindrical body 12 in this embodiment as shown in Figures 2 and 4, and is configured as a hook portion 20a that is bent upward and outwardly convex.

In this embodiment, as shown in Figure 1 (C), an upper end member 50 is fixed to the upper end portion 49 of the upper square shaft portion 27, and a lower end member 52 is fixed to the lower end portion 51 of the square shaft portion 27 on the lower end side. As shown in Figures 1 (B) and (C), the upper end member 50 has an upper end hook portion 56, which is configured similarly to the hook portion 20a (Figure 2), protruding integrally from the opposing outer side surfaces 55, 55 of an upper angular cylinder 53 into which the upper end portion 49 is tightly inserted and fixed. In addition, a spire 57 is integrally provided at the upper end of the upper angular cylinder 53. On the other hand, as shown in Figures 1(B) and (C), the lower end member 52 has a pyramidal section 60 that tapers downward and makes it easier to push the support into the ground, protruding from the lower end of a lower rectangular cylinder 59 into which the lower end portion 51 is tightly inserted and fixed.

Figure 6 shows an example of a garden fence 5 constructed using the posts 6 (Figure 1 (C)) to which the rotating and movable locking device 1 having such a configuration is applied. The posts 6 are set upright at the required intervals (e.g., 80 cm intervals) in flower beds, lawns, and approaches with their lower parts 64 pressed into the ground. The height position of the locking device 3 on the posts 6 is set as required by appropriately rotating the locking device 3 forward and backward, as described above. After that, for example, both ends 62, 62 of a connecting chain 61 are hooked onto the hook parts 20a of the locking devices 3, 3 that are locked to adjacent posts 6, 6, and the posts 6, 6 are connected to each other by the U-shaped slackened connecting chain 61. The hooking of the ends 62, 62 of the U-shaped slackened connecting chain 61 can be easily performed, for example, by hooking carabiners attached to a long chain at required intervals to the hook portions 20a. The hooking device 3 is prevented from rotating forward or backward around the axis of the cylindrical body 12 by hooking the ends 62, 62 of the connecting chain 61 to the opposing hook portions 20a, 20a. Therefore, the height position of the hooking device 3 once set does not change.

In addition, in this embodiment, since the upper end hook portion 56 is fixed to the upper end side of the support 6, as shown in FIG. 6, the end portion 67 (such as the carabiner) of the connecting chain 61 formed in the same manner as described above can be hooked onto the upper end hook portion 56. This allows the U-shaped slack connecting chain 61 to be connected in two stages, one above the other, resulting in the construction of an attractive looking fence 5.

FIG. 8 shows another embodiment of the torsion bar rotatable locking device 1, which comprises a torsion bar 2 and a rotatable locking member 3 that is locked to a required portion of the torsion bar 2 in the longitudinal direction.
The torsion bar 2 is configured as an arch-shaped torsion bar 71 in which upper ends 69, 69 of straight rod-shaped support sections 68, 68 spaced apart at a required distance are connected to each other by an arch-shaped connecting section 70 forming an inverted U shape.

The support column 68 is configured in the same way as the torsion bar 2 in Example 1, and has a plurality of helical ridges 10 (for example, four ridges) that are helically twisted in the same direction and at the same pitch around the axis L1 of the rod body 7 at required intervals around the circumference of the rod body 7, and the helical ridges 10 are provided continuously except for the lower end portion of the rod body 7. The lower end portion of the support column 68 is also configured as a square shaft portion 75 with a square cross section, as in Example 1.

In this embodiment, the arch-shaped torsion rod 71 is constructed in the same manner as shown in FIG. 3, and the outer circumferential surface 36 of the core tube 35 made of metal such as steel is coated with resin to form a resin-coated portion 37. The resin-coated portion 37 forms a helical ridge portion 10 that is twisted helically around the axis L1 (FIG. 8) of the rod body 7, and the core tube 35 is not twisted.

The locking device 3 is configured in the same manner as in Example 1, and has a tubular body (a cylindrical tubular body in this embodiment) 12 with an insertion hole 11 through which the torsion bar 2 can be inserted, as shown in Figures 2 and 4. When the support 68 (Figure 8) as the torsion bar 2 is inserted into the insertion hole 11, the inner peripheral surface 13 of the insertion hole 11 is provided with guide protrusions 16 located between adjacent helical ridges 10, 10 and extending in the direction of the axis L2 of the tubular body 12. In this embodiment, as in Example 1, four guide protrusions 16 are provided on the inner peripheral surface 13 at an angle pitch of 90 degrees so that they are positioned all between adjacent helical ridges 10, 10. One end (upper end in FIG. 5) 42 of each guide protrusion 16 abuts against one of the opposing side surfaces 15, 15 of the adjacent helical ridges 10, 10 (the side surface of the helical ridge 10a on the left side in FIG. 5) 15a, and the other end (lower end in FIG. 5) 43 of the guide protrusion 16 abuts against the other of the opposing side surfaces 15, 15 (the side surface of the helical ridge on the right side in FIG. 4) 15b.

The locking device 3 is attached to the support 68 of the torsion bar 2 having such a configuration, and the height position of the locking device 3 is set as required by rotating it forward and backward as described above. As shown in FIG. 2, an attachment portion 20 for attaching another object is provided on the outer surface 17 of the locking device 3. In this embodiment, the attachment portion 20 is configured as shown in FIG. 2 and FIG. 4, and is provided integrally with the outer surface 17 at the opposing portions 17a, 17b of the outer surface 17 of the cylindrical body 12, and is configured as a hook portion 20a that is bent upward and outwardly convex.

As described above, the lower end side of the support portion 68 is configured as a square-shaped shaft portion 75. The locking device 3 having the above configuration is attached to the support portion 68 provided with the spiral protrusion portion 10 at the outer end portion 81 of the square-shaped shaft portion 75, and the locking device 3 is slid from the outer end portion 81 of the square-shaped shaft portion 75 toward its inner end portion 82, and then the locking device 3 is moved to the support portion 68. In the support portion 68, the locking device 3 can move the support portion 68 while rotating around its axis due to the guide action of the guide protrusion 16, and thus the locking device 3 can move in one direction or the opposite direction (the direction indicated by the arrows F1 and F2 in FIG. 7) when viewed in the length direction of the support portion 68. By rotating the locking device 3 in the forward and reverse directions as appropriate, the locking device 3 can be easily and accurately moved to a desired position on the support part 68. Once the locking device 3 has been moved to the desired position, it can be prevented from rotating and remain in a fixed position.

In the rotating and moving locking device 1 configured in this way, the dimensions of each part can be set, for example, in the same way as in Example 1.

As shown in Figure 9, a lower end member 77 similar to that described in Figure 1(C) is fixed to the lower end portion 76 of the square shaft portion 75. The lower end member 77 has a pyramidal portion 80 tapered downwardly protruding from the lower end of a square tube portion 79 into which the lower end portion 76 is tightly inserted and fixed, which makes it easier to push the support portion 68 into the ground.

In Fig. 10, a garden fence 5 similar to that shown in Fig. 6 can be constructed using the arch-shaped torsion bar 71 to which the rotating movable locking device 1 having such a configuration is applied. The arch-shaped torsion bar 71 is set upright at the required intervals (e.g., 80 cm intervals) in a flower bed, lawn, or approach by pushing the lower parts 81 of the support parts 68, 68 on both sides into the ground. The height position of the locking device 3 on the support part 68 is set as required by appropriately rotating the locking device 3 forward and backward as described above. After that, for example, both ends 62, 62 of the connecting chain 61 are hooked to the hook parts 20a of the locking devices 3, 3 that are engaged with the opposing support parts 68, 68 of adjacent arch-shaped torsion bars 71, as in Example 1, and the opposing support parts 68, 68 are connected to each other by the connecting chain 61 that is loosened in a U-shape.

The present invention is by no means limited to the above examples, and it goes without saying that various design modifications are possible within the scope of the claims. One example is as follows.

(1) The torsion rod 2 includes rods in which the helical ridge portion 10 is formed by twisting the resin coating portion 37 that covers the outer circumferential surface 36 of the core tube 35 into a helical shape, as well as rods in which the helical ridge portion 10 is formed by twisting a metal rod such as a steel rod.

(2) The helical ridges 10 on the torsion bar 2 are provided in multiple rows at required intervals around the circumferential direction of the bar body 7, but in order to ensure smooth forward and reverse rotation of the locking device 3 around the axis by the guiding action of the guide ridges 16, it is preferable to set the number of helical ridges 10 to 3 to 6.

(3) The guide protrusions 16 can come into contact with the facing side surfaces 15, 15 of the adjacent helical ridges 10, 10, and are provided in a number of stripes at required intervals in the circumferential direction on the inner peripheral surface 13 of the insertion hole 11 of the cylindrical body 12, but the guide protrusions 16 are not necessarily provided between all of the adjacent helical ridges 10, 10. For example, they may be provided only between each of two opposing helical ridges 10, 10. Alternatively, when the torsion bar 2 has an odd number of helical ridges 10, the guide protrusions 16 may be provided only between each of the adjacent helical ridges 10, 10 of the selected helical ridges 10, 10, 10 that are arranged at an angle of 120 degrees.

(4) The guide protrusion 16 can come into contact with the facing side portions 15, 15 of the adjacent helical ridge portions 10, 10, and the guide action of the guide protrusion 16 at the helical ridge portions 10, 10 can rotate the fastener 3 in the forward and reverse directions as appropriate around the axis of the cylindrical body 12, thereby moving the fastener 3 in one direction or the opposite direction as viewed in the longitudinal direction of the torsion bar 2. As long as the guide protrusion 16 has such a configuration, it may be configured as a linear guide protrusion 16 extending in the axial direction of the cylindrical body 12, or may be configured with two guide protrusions 16a, 16b arranged at a required distance in the axial direction, as shown in FIG. 11, for example. One of the guide protrusions 16a abuts against one 15a of the side surfaces 15a, 15b of the adjacent helical ridges 10, 10 facing each other, and the other guide protrusion 16b abuts against the other 15b of the facing side surfaces 15a, 15b. Alternatively, for example, as shown in FIG. 12, a single guide protrusion 16c having a hemispherical shape may be used. In this case, one 16c1 of the facing portion of the single guide protrusion 16c abuts against one 15a of the side surfaces 15a, 15b of the adjacent helical ridges 10, 10 facing each other, and the other 16c2 of the facing portion abuts against the other 15b of the facing side surfaces 15a, 15b.

(5) Figure 13 shows a case where the left and right guide protrusions 16, 16 that contact the left and right side surfaces 15c, 15d of the helical ridge 10 in a point-like manner are provided on the inner peripheral surface 13 of the insertion hole 11 of the cylindrical body 12. In this figure, two helical ridges 10, 10 are provided on the outer surface 9 of the rod body 7, and two sets of the left and right guide protrusions 16, 16 are provided corresponding to the respective helical ridges 10, 10. The guide protrusions 16, 16 are configured as hemispherical protrusions in this embodiment. Even with this configuration, the guide action of the guide protrusions 16, 16 allows the locking device 3 to rotate forward and backward around its axis, and thus the locking device 3 can be moved forward and backward along the length of the torsion bar 2.
Figure 14 shows another embodiment of the guide protrusion 16, which is provided with a triangular fitting recess 85 into which the top portion 83 of the helical ridge portion 10 is fitted, and the inner surface 86 of the fitting recess 85 is configured as a curved surface that can abut in a surface contact state against the left and right side portions 87, 87 of the top portion 83.
Furthermore, when configured in this manner, the abutting guide protrusions 16, 16 are not necessarily provided to correspond to all of the helical ridge portions 10, but may be provided only on each of the two opposing helical ridge portions 10, 10, or, in the case where the torsion bar 2 has an odd number of helical ridge portions 10, 10, 10, each of the helical ridge portions 10, 10, 10, each of which is located, for example, at an angle of 120 degrees between them.

(6) When the torsion bar 2 is configured as the arch-shaped torsion bar 71 connected by an arch-shaped connecting portion 70 having an inverted U shape, as shown in FIG. 8, the helical protrusion 10 may be formed continuously between the straight rod-shaped support portion 68 and the arch-shaped connecting portion 70. In this case, when the guide protrusion 16 of the locking device 3 is configured to abut the helical protrusion 10 in a point-like manner (FIG. 13) or a planar manner (FIG. 14) on both the left and right side surfaces in the extension direction, as shown in FIG. 13 or FIG. 14, the guide action of the guide protrusion 16 allows the locking device 3 to move while rotating forward and backward between the support portion 68 and the arch-shaped connecting portion 70, thereby allowing the locking device 3 to move in one direction or the other when viewed in the longitudinal direction of the torsion bar 2.

(7) The locking device 3 can also be configured to have a two-piece cylindrical body 12. The two-piece can be divided on any surface including the axis of the cylindrical body 12, as shown in FIG. 15(A). To form the cylindrical body 12 shown in FIG. 15(B) using two half pieces 89a, 89b, the cut surfaces 90a, 90b of the half pieces 89a, 89b can be integrated with each other by press-fitting the recess and protrusion. When configured in this way, the guide protrusion 16 is provided on the inner surfaces 91a, 91b of the half pieces 89a, 89b, as shown in FIG. 15(A), or is provided at the joint between the inner surfaces 91a, 91b of the two half pieces 89a, 89b, as shown in FIG. 15(A). When the fastener 3 is configured as such a split-type tubular body 12, for example as in the embodiment exemplified in Example 1, even if other components are attached to the upper and lower ends of the torsion bar 2, or if the fastener 3 cannot be added due to the presence of other components, it is possible to increase the number of fasteners 3 attached to the torsion bar 2 later.

(8) The helical ridge portion 10 may be provided over the entire length of the rod body 7 depending on the application of the torsion rod 2.

(9) The attachment portion 20 provided on the outer surface portion 17 of the fastener 3 can be configured as various types of attachment portions 20, such as a hook portion 20a (for example, as shown in FIG. 2) for hanging other objects, a ring-shaped portion, a C-shaped or U-shaped portion for fitting the shaft portion 92 of a rod-shaped member, or an insertion holding portion 20b that can hold other objects by fitting them in, or a T-shaped protruding portion 20c that protrudes sideways, as shown in FIG. 16. In addition, the fastener 3 can be used for various purposes, such as displaying a specified position by providing a light reflector or a light source (a type of the other object).

(10) Figures 17 and 18 show an embodiment in which the torsion bar rotatable locking device 1 according to the present invention is applied to stretching a net 95 (having mesh sizes set as required depending on the application) between left and right posts 6, 6 for wind protection, shading, and to keep out birds and animals such as dogs and cats. However, in Figure 17, the helical ridge 10 of the torsion bar 2 is omitted from the illustration.
The locking device 3 having the mounting portion 20 as the fitting holding portion 20b described in FIG. 16 is attached to the upper end portion of the pillars 6, 6. The height of the locking device 3 can be adjusted by rotating the locking device 3 forward and backward as required around the axis of the pillar 6, and the fitting holding portion 20b of the left and right locking devices at approximately the same height is fitted and held at a required portion of the cross member 96. Also, the locking device 3 (having the same configuration as the locking device 3 having the T-shaped protruding portion 20c protruding sideways shown in FIG. 16) having a T-shaped mounting portion 20c for hooking a required portion of the net 95 is attached to a required portion of the pillar 6 or the cross member 96. The positioning state of the locking device 3 having the T-shaped mounting portion 20c can be adjusted by rotating the locking device 3 forward and backward as required around the axis of the pillar 6 or the cross member 96. In this manner, by hooking the required portions of the net onto the T-shaped mounting portion 20c, the upper edge portion 97, lower edge portion 99, and middle portion 98 of the net 95 can be attached to the support posts 6 and the cross members 96, thereby allowing the net 95 to be stretched between the left and right support posts 6, 6.

(11) The torsion bar rotating and moving locking device 1 of the present invention can be used not only for horticultural purposes such as plant cultivation and exterior purposes such as garden fence construction, but also for various other purposes such as interior use by setting the diameter and length of the torsion bar 2 as required. Furthermore, the torsion bar 2 can be used in various positions, not limited to the vertical direction, but also horizontally and diagonally.

Reference Signs List 1 Rotational movement type locking device for torsion bar 2 Torsion bar 3 Locking tool 6 Support 7 Bar body 10 Helical ridge portion 11 Insertion hole 12 Cylindrical body 13 Inner peripheral surface portion 16 Guide protrusion portion 20 Mounting portion 35 Core tube 37 Resin coating portion 68 Support portion 70 Arch-shaped connecting portion 89 Half-split piece 90 Split surface

Claims (9)

A torsion bar rotationally movable locking device comprising a torsion bar and a rotationally movable locking tool that is locked to a required portion of the torsion bar in the length direction,
The torsion bar has a plurality of helical ridges that are twisted in a helical manner in the same direction and at the same pitch around the axis of the rod body and are provided at required intervals in the circumferential direction of the rod body, and the helical ridges are provided over the entirety or a portion of the length of the rod body;
a torsion bar rotatably moving locking device, characterized in that the locking device has a cylindrical body with an insertion hole through which the torsion bar can be inserted, and when viewed with the torsion bar inserted into the insertion hole, the inner surface of the insertion hole is provided with a guide protrusion that can abut against the facing side portions of adjacent helical ridges, and the guide action of the guide protrusions allows the locking device to rotate forwards and backwards around the axis of the cylindrical body, thereby allowing the locking device to move in one direction or the opposite direction when viewed in the longitudinal direction of the torsion bar. A torsion bar rotationally movable locking device comprising a torsion bar and a rotationally movable locking tool that is locked to a required portion of the torsion bar in the length direction,
The torsion bar has a plurality of helical ridges that are twisted in a helical manner in the same direction and at the same pitch around the axis of the rod body and are provided at required intervals in the circumferential direction of the rod body, and the helical ridges are provided over the entirety or a portion of the length of the rod body;
a torsion bar rotationally moving locking device, characterized in that the locking device has a cylindrical body with an insertion hole through which the torsion bar can be inserted, and when viewed with the torsion bar inserted into the insertion hole, guide protrusions are provided on the inner surface of the insertion hole which clamp the helical ridge on both the left and right sides in the direction of extension, and the helical ridge can be rotated forwards and backwards around the axis of the cylindrical body by the guiding action of the guide protrusions, thereby allowing the locking device to be moved in one direction or the opposite direction when viewed in the longitudinal direction of the torsion bar. A torsion bar rotationally movable locking device comprising a torsion bar and a rotationally movable locking tool that is locked to a required portion of the torsion bar in the length direction,
The torsion bar has a plurality of helical ridges that are twisted in a helical manner in the same direction and at the same pitch around the axis of the rod body and are provided at required intervals in the circumferential direction of the rod body, and the helical ridges are provided over the entirety or a portion of the length of the rod body;
a torsion bar rotationally moving locking device comprising: a cylindrical body having an insertion hole through which the torsion bar can be inserted; when viewed with the torsion bar inserted into the insertion hole, an inner peripheral surface of the insertion hole is provided with a guide protrusion located between adjacent helical ridges and extending in the axial direction of the cylindrical body, one end of the guide protrusion abutting one of the opposing side surfaces of the adjacent helical ridges and the other end of the guide protrusion abutting the other of the opposing side surfaces; and the helical ridges act as guides to rotate the locking tool forward and backward around the axis of the cylindrical body, thereby allowing the locking tool to move in one direction or the opposite direction when viewed in the longitudinal direction of the torsion bar. A torsion bar rotationally movable locking device comprising a torsion bar and a rotationally movable locking tool that is locked to a required portion of the torsion bar in the length direction,
The torsion bar has a plurality of helical ridges that are twisted in a helical manner in the same direction and at the same pitch around the axis of the rod body and are provided at required intervals in the circumferential direction of the rod body, and the helical ridges are provided over the entirety or a portion of the length of the rod body;
The torsion rod has an outer surface of a metal core tube coated with resin to form a resin coating portion, and the resin coating portion forms a helical ridge portion that is twisted helically around the axis of the rod body over the entire or part of the length of the rod body, and the core tube is not twisted.
a torsion bar rotationally moving locking device comprising: a cylindrical body having an insertion hole through which the torsion bar can be inserted; when viewed with the torsion bar inserted into the insertion hole, an inner peripheral surface of the insertion hole is provided with a guide protrusion located between adjacent helical ridges and extending in the axial direction of the cylindrical body, one end of the guide protrusion abutting one of the opposing side surfaces of the adjacent helical ridges and the other end of the guide protrusion abutting the other of the opposing side surfaces; and the helical ridges act as guides to rotate the locking tool in forward and reverse directions around the axis of the cylindrical body, thereby allowing the locking tool to be moved in one direction or the opposite direction when viewed in the longitudinal direction of the torsion bar. A rotating and movable locking device for a torsion bar according to any one of claims 1 to 4, characterized in that the torsion bar is a support having a straight rod shape. A torsion bar rotationally movable locking device comprising a torsion bar and a rotationally movable locking tool that is locked to a required portion of the torsion bar in the length direction,
The torsion bar is configured such that the upper ends of straight rod-shaped support members spaced apart at a required interval are connected to each other by an arch-shaped connecting portion forming an inverted U-shape,
The torsion rod has an outer surface of a metal core tube coated with resin to form a resin-coated portion, and the resin-coated portion forms a helical ridge portion that is twisted helically around the axis of the rod body over the entire or part of the length of the rod body, and the core tube is not twisted.
a torsion bar rotatably moving locking device having a cylindrical body with an insertion hole through which the torsion bar can be inserted, and when viewed with the torsion bar inserted into the insertion hole, a guide protrusion is provided on the inner surface of the insertion hole, located between adjacent helical ridges, and extending in the axial direction of the cylindrical body, one end of the guide protrusion abuts against one of the facing side surfaces of the adjacent helical ridges, and the other end of the guide protrusion abuts against the other of the facing side surfaces, and the helical ridges act as guides to rotate the locking tool in both forward and reverse directions around the axis of the cylindrical body, thereby allowing the locking tool to be moved in one direction or the opposite direction when viewed in the longitudinal direction of the torsion bar. The torsion bar rotational movement locking device according to claim 1, 2, 3, 4 or 6, characterized in that the cylindrical body is divided into two halves along a plane including the axis thereof, and the cut surfaces of the two halves are integrated together. The torsion bar rotationally movable locking device according to claim 1, 2, 3, 4 or 6, characterized in that the helical ridge portion is set to 3 to 6 threads. The torsion bar rotating and moving locking device according to claim 1, 2, 3, 4 or 6, characterized in that the outer surface of the locking tool is provided with an attachment part for attaching other objects.

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