JP4437266B2 - Helical support and its connector - Google Patents

Description

  The present invention relates to a fixed spiral support for wrapping an electric wire, cable or communication wire together with an overhead electric wire and a messenger wire, or for hanging an electric wire, cable or communication wire around the overhead electric wire and messenger wire, and a spiral. The present invention relates to a connector for a spiral support for connecting and extending the shaped supports.

In general, as a method of suspending an overhead electric wire on a messenger wire stretched between utility poles, a method of winding or suspending the electric wire together with the electric wire using a spiral support tool is performed. Since this spiral support is fixed, when it is extended, it is used by sequentially connecting it in the longitudinal direction.
In order to sequentially attach the fixed-length spiral support tool along the longitudinal direction of the overhead electric wire, as shown in FIG. Wrap and wrap around sequentially, or insert the end of the spiral support 1 into a cylindrical connector made of a material such as aluminum, and after insertion, use the crimping tool to connect the cylindrical connector The terminals of the spiral support 1 were interconnected by being pressed and fixed.

However, the use of a crimping tool in high-altitude work can be dangerous and has two parts, which is an inefficient method.
Therefore, as a method without using a crimping tool, a connector with a male terminal is attached to one end of a standard spiral support, and a connector with a female terminal is attached to the other end. A method of joining connectors has been developed. Although the method of using this connector avoids the use of a crimping tool as a work at a high place, the direction of the helical support is made and the direction of the helical support is adjusted at a high place (ie, The male terminal must be connected to the female terminal, and the female terminal must be connected to the male terminal. The female terminals or male terminals cannot be connected to each other.) Is inefficient, potentially dangerous, and inefficient .

  In addition, in the method of using a crimping tool and a connector with male and female terminals, the spiral support is connected while being wound. Therefore, if a work mistake or a winding failure with the messenger wire occurs during the work, it is difficult to rewind. There was a possibility of danger in the work, which was also inefficient.

  Therefore, the present applicant has completed the following patented invention in order to solve the above problems. This patent invention relates to a lashing rod (spiral support) in which a connector having the same shape is attached to both ends formed in a spiral shape, and a lashing rod (spiral support) in which the same shape connector is formed at one end. And a pair of bifurcated projecting pieces formed on the other end and projecting at two locations facing the center, and provided on the inner side of the joint sleeve, the outer edge portion of the inclined surface and the flat upper surface Engaging protrusions that are provided at two positions orthogonal to the protruding pieces, and engaging hole portions that engage with engaging protrusions of a lashing rod (spiral support) to be connected, and the engaging holes. It was set as the structure which consists of an inclined surface formed in the side of the part.

According to this patented invention, there is no need to select the directionality when connecting two helical supports (in the sense that there is no distinction between male terminals and female terminals), and it can be connected with one touch. This has an excellent effect of making the work at the place safe and easy (see Patent Document 1).
Japanese Patent No. 3577701

  However, although the above-mentioned patented invention can be connected with one touch, it takes a little time to remove, and the removal work at a high place in a cold region or the like requires a more convenient removal.

  In view of the above points, an object of the present invention is to provide a spiral support and a connector thereof that do not require selection of directionality and can be easily removed.

According to the first aspect of the present invention, one connector attached to the end of one spiral support body and the other connector attached to the end of the other spiral support body are respectively Connector having the same shape that fits in pairs in the axial direction of
The one connector and the other connector are
A cylindrical joint sleeve fixed to the end of each helical support body, an engagement protrusion as a male terminal extending from the end of the joint sleeve along the axial direction of the joint sleeve, and the joint sleeve provided extending along from the end portion in the axial direction of the joint sleeve, with surrounding at least an outer surface and both side surfaces of the other connector engagement protrusion of interpolation of the other connector engagement protrusion of An engaging protrusion containing piece that is a female terminal that can be detached, and
The engaging projecting piece and the engaging projecting piece receiving piece have the same projecting length from the end of the joint sleeve of both pieces, and a bifurcated portion through a gap between the two pieces. Extending from the end of the joint sleeve independently of each other along the axial direction of the joint sleeve,
The engaging protrusion is provided with a protrusion extending in the radial direction away from the axis, and the engaging protrusion receiving piece has a size capable of receiving and locking the protrusion of the engaging protrusion. It is characterized in that a joint hole is provided.

The invention according to claim 2, the helical support body is formed in a spiral shape, a helical support for supporting in a state of inserting the striatum therein, the connector according to claim 1 The helical support body is attached to both ends of the main body, and when the plurality of spiral support parts having the connector are coupled to each other, the spiral is necessarily extended and formed. a spiral-shaped support.

According to the first aspect of the present invention, one connector attached to the end of one spiral support body and the other connector attached to the end of the other spiral support body are respectively The two connectors in the axial direction are fitted in the same shape, and each of the one connector and the other connector is a cylindrical member fixed to the end of each helical support body. the joint sleeve, and the engaging protrusion are male terminals extending along the axial direction of the joint sleeve from the end of the joint sleeve, is provided extending from the end of the joint sleeve in the axial direction of the joint sleeve An engagement protrusion receiving piece that is a female terminal that surrounds at least the outer surface and both side surfaces of the engagement protrusion of the other connector and is capable of inserting and removing the engagement protrusion of the other connector. Ri, with the engaging protrusion, the engaging and the engagement projection piece housing piece, with projecting length from the end of the joint sleeve of both pieces are identical in length, with a gap portion on both pieces , Provided in a bifurcated manner and extending from the end of the joint sleeve along the axial direction of the joint sleeve, and the engaging protrusion is provided with a protrusion extending in the radial direction away from the axis, Since the engagement protrusion receiving piece has an engagement hole having a size capable of receiving and locking the protrusion of the engagement protrusion, the male and female are connectors of the same shape. Therefore, there is no need to select the vertical directionality, and the connector is easy to remove.

The invention according to claim 2, the helical support body is formed in a spiral shape, a helical support for supporting in a state of inserting the striatum therein, the connector according to claim 1 The helical support body is attached to both ends of the main body, and is characterized in that the spiral is inevitably formed when a plurality of spiral support members having the connector are coupled to each other. Therefore, it is not necessary to distinguish between the head and the rear end of the spiral support, and it is not necessary to pay attention to the assembly direction even when a plurality of spiral supports is coupled. That is, if the connectors are connected at any time, the spiral is naturally extended, and no other complicated work is required.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are views showing a spiral support according to the present invention. The spiral support body 1a is formed by coating the surface of the core wire with a synthetic resin, and its cross section has a gentle circular shape and is spirally formed in the longitudinal direction. The spiral inner diameter is formed to be equal to or larger than the sum of the outer diameter of a messenger wire, which will be described later, and the outer diameter of the cable. Moreover, the length is a regular thing cut | disconnected by regular length, such as 750, 1000, 1500 mm normally.

3 is a perspective view showing a first embodiment of the connector of the spiral support according to the present invention, FIG. 4 is an explanatory view seen from the plane direction and its side view, and FIG. 5 is an explanatory view seen from the front direction. And a side view thereof. As shown in these drawings, the connector 2 of the spiral support tool according to the present invention is a connector 2 having the same shape that is attached to both ends of the spiral support body 1a.
A joint sleeve 3 for fixing the helical support body 1a is formed at one end, and a pair of bifurcated protrusions 21a and 21b are formed at two positions opposite to the center at the other end. Yes.

Further, one of the pair of bifurcated protrusions 21a out of the bifurcated protrusions 21a and 21b has an engagement flat surface portion 211 and a trapezoidal protrusion 212 at the tip of the engagement flat surface portion. The trapezoidal protrusion 212 is an inclined surface that goes down toward the tip.
Further, the other pair of bifurcated protrusions 21b has an engagement protrusion 213 (FIG. 4) that engages with the engagement flat surface portion 211 of the above-described one pair of bifurcated protrusions 21a on the distal end side. In addition, an engagement hole 214 and an engagement release piece 215 are formed at the rear of the engagement protrusion 213.

  6A is a cross-sectional view when the connector is cut from the central portion in the planar direction, and FIG. 6B is a cross-sectional view when the connector is cut from the central portion in the front direction. FIG. 7 is a cross-sectional view of the connector connected. As shown in FIG. 6 (a), on the inner side of the tip of the protrusion 21b having the engagement hole 214, the base of the tip of the protrusion 21a having no engagement hole 214 in FIG. A guide hole 215 is formed so that the shaped protrusion 212 can be easily received. In addition, an engagement piece 216 that engages with a step 212 a at the rear end of the trapezoidal protrusion 212 is formed in the back of the guide hole 215.

Therefore, when the trapezoidal protrusion 212 is inserted into the guide hole 215 when the connector 2 is connected, and the trapezoidal protrusion 212 is inserted to the back, the engagement piece 216 has the trapezoidal protrusion 212. When the projecting piece 21a bends inward and the trapezoidal protrusion 212 is inserted further into the back, the trapezoidal protrusion 212 reaches the engagement hole 214, and the projecting piece 21a bent inward is normally The step 212a at the rear end of the trapezoidal protrusion 212 is engaged with the engagement piece 216 and connected.
In this connected state, a part of the outside of the trapezoidal protrusion 212 is in contact with the disengagement piece 217.

  To release the connection of the connector 2, the pair of disengagement pieces 217 and 217 are picked with two fingers and pushed inward. Then, the trapezoidal protrusions 212 of the pair of protrusions 21a installed on the inner side are bent inward. In this state, when the two connectors 2 and 2 are pulled in a direction to separate them, the pair of projecting pieces 21a and 21a come out of the guide hole 215, and the connection between the connectors 2 and 2 is released.

  FIG. 8 is a front view, a plan view, and a bottom view showing a second embodiment of the connector of the spiral support according to the present invention, FIG. 9 is a side view, and FIG. 10 is a cross-sectional view of the connector connected state. . The connectors 4 and 4 are connectors 4 and 4 having the same shape attached to both ends of the spiral support body 1a, and a joint sleeve 3 for fixing the spiral support body 1a formed at one end; The other end has an engaging protrusion 41 formed in a bifurcated shape and an engaging protrusion receiving hole 42.

  Further, the side wall 42a of the engagement protrusion receiving hole 42 has an engagement hole 421 that engages with a part of the engagement protrusion 41, and an engagement that releases the engagement between the engagement protrusion 41 and the engagement hole 421. A mating release piece 422 is formed.

  First, the engagement protrusion receiving hole 42 has four side walls 42a, 42b, 42c, and 42d that are erected in a direction perpendicular to the upper surface of the joint sleeve 3, and the side walls 42a, 42b, 42c, and 42d. The inside is hollow with the top opened in a rectangular shape. An engagement hole 421 is formed in one surface 42a of the side walls 42a, 42b, 42c, and 42d, and the engagement release piece is perpendicular to the upper surface of the joint sleeve 3 so as to cover a part of the engagement hole 421. 422 is erected. The disengagement piece 422 has a rectangular shape, and a push portion 422a (FIG. 9) for pushing inward with a fingertip is formed at the top. When the pushing portion 422a is pushed inward with the fingertip, the disengagement piece 422 is bent to the inside of the engagement hole 421.

  Next, the outer surface of the engaging protrusion 41 is erected in the vertical direction from the upper surface of the joint sleeve 3. Further, on the outer side surface of the engaging protrusion 41, protrusions 411 having a trapezoidal shape in side view are formed at two upper portions. On the other hand, the inner surface facing the outer surface is a tapered surface that is inclined outward as it goes upward (downward in FIG. 9).

  And in the state which connected the connectors 4 and 4 as shown in FIG. 10, both the engagement protrusions 41 and 41 are inserted in the engagement protrusion piece accommodation holes 42 and 42 which oppose this, Both engagement protrusions The 41 and 41 trapezoidal protrusions 411 and 411 engage with the mating engagement holes 421 and 421, respectively. More specifically, an L-shaped portion formed between the rear end of the trapezoidal protrusion 411 and the outer surface engages with the upper edge of the engagement hole 421.

  In order to release the connection between the connectors 4 and 4, the push portions 422a and 422a of the pair of disengagement pieces 422 and 422 are picked with two fingers and pushed inward (or with a tool). Then, the trapezoidal protrusions 411 and 411 of the pair of engagement protrusions 41 and 41 installed on the inner side are bent inward. In this state, when the two connectors 4 and 4 are pulled in a direction to separate them, the pair of engaging protrusions 41 and 41 come out of the engaging protrusion receiving holes 42 and 42, and the connection between the connectors 4 and 4 is released. It is.

11 is a front view, a plan view, and a bottom view showing a third embodiment of the connector of the spiral support according to the present invention, FIG. 12 is a side view, and FIG. 13 is a cross-sectional view of the connector connected state. . The connectors 5 and 5 are connectors 5 and 5 having the same shape attached to both ends of the spiral support body 1a, and the joint sleeve 3 for fixing the spiral support body 1a formed at one end; The other end has an engaging protrusion 51 and an engaging protrusion receiving hole 52 formed in a bifurcated shape.
Further, the side wall 52 a of the engagement protrusion receiving hole 52 is engaged with an engagement hole 521 that engages with a part of the engagement protrusion 51, and the engagement that releases the engagement between the engagement protrusion 51 and the engagement hole 521. A mating release piece 522 is formed.

  Since the connector of the third embodiment has substantially the same configuration as the connector of the second embodiment described above, only different parts will be described. First, the inner side surface of the engagement protrusion 41 of the connector 4 in the second embodiment described above is a tapered surface that is inclined outward as it goes upward, but the engagement protrusion of the connector 5 of the third embodiment. 51 is erected vertically from the upper surface of the joint sleeve 3.

  Further, in the engagement protrusion receiving hole 42 of the second embodiment, the four side walls 42a, 42b, 42c, 42d surround the hollow portion. As shown in the front view of FIG. The engaging protrusion receiving hole 52 of the form is missing a part of 52d which is one side of the four side walls 52a, 52b, 52c, 52d. This is because the ease of manufacturing the connector 5 is taken into consideration. A tapered surface is formed in the opening of the engagement protrusion receiving hole 52 so that the engagement protrusion 51 can be easily inserted. Since other configurations are the same as those of the second embodiment, description thereof is omitted.

FIG. 14 is a front view, a plan view, and a bottom view showing a fourth embodiment of the connector of the spiral support according to the present invention, FIG. 15 is a side view, and FIG. 16 is a view of the connector of FIG. FIG. 17 is an enlarged view of the disengagement piece, and FIG. 17 is a cross-sectional view seen from the direction AA of FIG. 14 in a state where the connector is connected. The connectors 6 and 6 are connectors 6 and 6 having the same shape attached to both ends of the spiral support body 1a, and the joint sleeve 3 for fixing the spiral support body 1a formed at one end; The other end has an engaging protrusion 61 and an engaging protrusion receiving hole 62 formed in a bifurcated shape.
Further, the side wall 62 a of the engagement protrusion receiving hole 62 has an engagement hole 621 that engages with a part of the engagement protrusion 61, and an engagement that releases the engagement between the engagement protrusion 61 and the engagement hole 621. A mating release piece 622 is formed.

  Since the connector of this 4th Embodiment has the structure substantially the same as the connector of 2nd Embodiment mentioned above, only a different part is demonstrated. First, although the inner side surface of the engagement protrusion 41 of the connector 4 in the second embodiment described above is a tapered surface that is inclined outward as it goes upward, the engagement protrusion of the connector 6 of the fourth embodiment. 61 is erected vertically from the upper surface of the joint sleeve 3.

Further, the engaging protrusion receiving hole 42 of the second embodiment is such that the four side walls 42a, 42b, 42c, 42d surround the hollow portion, but the engaging protruding piece receiving hole 62 of the fourth embodiment is 62c, which is one side of the four side walls 62a, 62b, 62c, 62d, is shorter than the engaging protrusion 61 as shown in the side view of FIG. Further, as shown in the plan view of FIG. 14, the upper part of the side wall 62c is not joined to the adjacent side walls 62b and 62d. This takes into account the ease of manufacturing the connector 6 and the ease of connecting the connectors together. A tapered surface is formed at the opening of the engagement protrusion receiving hole 62 so that the engagement protrusion 61 can be easily inserted. Since other configurations are the same as those of the second and third embodiments, description thereof will be omitted.
Here, in the first embodiment, even if one connector 2 is rotated by 180 °, the connectors 2 and 2 can be coupled to each other, so there are two combinations of connector coupling. However, in one case, the spiral is not formed, so it is necessary to mark the joint portion of both connectors. On the other hand, the connectors of the second embodiment, the third embodiment, and the fourth embodiment cannot be connected to each other when one connector is rotated 180 °. Therefore, there is only one combination of connector connections. That is, if the connectors are connected at any time, the spiral is naturally extended, and no other complicated work is required. In the present invention, the connectors according to the second to fourth embodiments described above are the inventions according to the claims.

  Next, an example of the process of constructing a cable between utility poles using a spiral support will be described. As shown in FIG. 18, a messenger wire 8 is stretched in advance between the utility poles 7a and 7b. An operator rides on a bucket near one of the power poles and performs the construction work of the spiral support 1. That is, the spiral support 1 is wound around the messenger wire 8 and sent out from the utility pole 7a toward the utility pole 7b. When the first spiral support 1 is sent out, the connector 2 of the second spiral support 1 is connected to the connector 2 at the end thereof. As described above, the connectors 2 and 2 can be easily connected with one touch. By repeating these steps, the spiral support 1 is installed between the utility poles 7a and 7b.

  Here, as shown in FIG. 19, if the pitch of the spiral shape at the end is set small for the first spiral support tool 1, the space between the utility poles 7 a and 7 b when the spiral support tool 1 is transferred. Since the spiral support 1 does not come off in this case, it is not necessary to use a separate fall prevention suspender. In addition, a drawstring threading tool and a fixing tool (both not shown) are connected using the connector 2 at the tip of the spiral support tool 1, and these are transferred simultaneously with the spiral support tool 1.

  Next, when the spiral support 1 is installed between the utility poles 7a and 7b, the first spiral support 1 and the last spiral support 1 are fixed to the messenger wire 8 with a fixing tool.

  Then, a step of suspending the cable in the spiral support tool 1 by connecting the cable to the rear end portion of the draw string threading tool, winding up the pull string portion with a winch, and drawing the cable into the diameter of the spiral support tool. Is completed.

  In addition, it cannot be overemphasized that various embodiment can be taken in the range which does not deviate from the meaning of this invention. The connector in the above embodiment is a connector having the same shape that is attached to both ends of the spiral support, and shows an example in which the connectors can be easily connected to each other and released from the connection. Those having the configuration are within the scope of the present invention.

It is explanatory drawing which shows the helical support tool which concerns on this invention. It is sectional drawing of the helical support tool which concerns on this invention. It is a perspective view which shows the connector of 1st Embodiment. It is explanatory drawing at the time of seeing the connector of 1st Embodiment from the plane direction and the side surface direction. It is explanatory drawing at the time of seeing the connector of 1st Embodiment from the front direction and a side surface direction. (A) is a cross-sectional view when the connector of the first embodiment is cut from the center portion in the planar direction, and (B) is a cross-sectional view when the connector of the first embodiment is cut from the center portion in the front direction. . It is sectional drawing of the state which connected the connector. It is the front view, top view, and bottom view which show the connector of 2nd Embodiment. It is a side view which shows the connector of 2nd Embodiment. It is sectional drawing which shows the state which connected the connector of 2nd Embodiment. It is the front view, top view, and bottom view which show the connector of 3rd Embodiment. It is a side view which shows the connector of 3rd Embodiment. It is sectional drawing which shows the state which connected the connector of 3rd Embodiment. It is the front view, top view, and bottom view which show the connector of 4th Embodiment. It is a side view which shows the connector of 4th Embodiment. It is an enlarged view which shows the engagement release piece of the connector of 4th Embodiment. It is sectional drawing which shows the state which connected the connector of 4th Embodiment. It is the schematic which shows the state which equips a spiral support tool. It is explanatory drawing which shows the front spiral support tool. It is explanatory drawing which shows the connection method of the conventional helical support tool.

DESCRIPTION OF SYMBOLS 1 Helical support 2, 4, 5, 6 Connector 3 Joint sleeve 7a, 7b Utility pole 8 Messenger wire 21a, 41, 51, 61 Engagement protrusion 21b, 42, 52, 62 Engagement protrusion accommodation piece 212,411 Projection 214, 421, 521, 621 Engagement hole

Claims (2)

One connector attached to the end of one spiral support body and the other connector attached to the end of the other spiral support body are paired with each other in the axial direction. A connector with the same shape that fits
The one connector and the other connector are
A cylindrical joint sleeve fixed to the end of each helical support body;
An engaging protrusion that is a male terminal extending from the end of the joint sleeve along the axial direction of the joint sleeve;
It provided extending along the axial direction of the joint sleeve from the end of the joint sleeve, with surrounding at least an outer surface and both side surfaces of the other connector engagement protrusion of Kakarigo突of the other connector An engaging protrusion receiving piece that is a female terminal capable of inserting and removing the piece,
The engaging protrusion and the engaging protrusion receiving piece are:
The projecting lengths from the ends of the joint sleeves of both pieces are the same length, and the joint sleeves are separated from the ends of the joint sleeve independently of each other in a bifurcated manner through a gap between the pieces. Extending along the axial direction,
The engaging protrusion is provided with a protrusion extending in the radial direction away from the axis,
An engagement hole having a size capable of receiving and locking the protrusion of the engagement protrusion is provided in the engagement protrusion receiving piece. A spiral support body is formed in a spiral shape, and is supported in a state in which a linear body is inserted therein,
The connector according to claim 1 is attached to both ends of the spiral support body, and the spiral is inevitably formed when a plurality of spiral supports having the connector are joined together. A spiral support device characterized by being made as described above.

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