JP4239029B2 - Helical support and its connector - Google Patents

Description

  The present invention relates to a fixed-length spiral support for winding 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, etc. 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 fixing with pressure contact.

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 the crimping tool and the connector with male and female terminals, the spiral support is connected while being wound. Therefore, in the middle of the work, if a work mistake or winding with the messenger wire occurs, 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 some time to remove, and the removal work at a high place performed 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.

The invention described in claim 1 is the same that is attached to the end of one spiral support body and is fitted to the end of the other spiral support body in pairs. A connector with a shape,
A cylindrical joint sleeve fixed to the end of one 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; A space that extends from the end of the joint sleeve so as to face the mating piece and extends in the axial direction of the joint sleeve, and forms a side wall that surrounds the engaging protrusion of the other connector, and the side wall surrounds An engagement protrusion is a female terminal in which the engagement protrusion of the other connector can be inserted and removed, and an engagement hole that engages with the engagement protrusion of the other connector is formed in a part of the side wall. And a disengaging piece for releasing the engagement of the engaging protrusion of the other connector housed in the engaging protrusion receiving piece. The engaging protruding piece and the engaging protruding piece Between the receiving piece, the engaging protrusion of the other connector After being accommodated in the engagement projection piece housing piece inside of the connector, the engaging protrusion of the other connector, is engaged with the engaging hole and the guide to the engagement hole direction of the other connector, the other The engagement protrusion of the connector is controlled to move in a direction perpendicular to the axial direction of the connector and away from the engagement protrusion receiving piece of one connector, and the engagement of one connector The projecting piece is also characterized in that a movement restricting piece for restricting movement in the above direction is interposed.

The invention described in claim 2 is the connector according to claim 1, movement restriction piece is a protrusion having a tapered surface at the distal end, in a part of the wall surrounding the Kakarigo突piece of the other connector It is characterized by being formed.

The invention according to claim 3, The connector according to claim 1 or 2 wherein an engaging protrusion, the wall surrounding the Kakarigo突piece, the same length projecting length from the joint sleeve end of , and the movement restriction member is characterized in that the shorter projecting length from the joint sleeve end than the wall surrounding the locking Go突piece.

The invention according to claim 4 is a spiral support device in which the spiral support device main body is formed in a spiral shape, and is supported in a state in which the striate body is inserted into the spiral support device body, and any one of claims 1 to 3 . Are attached to both ends of the spiral support body, and a plurality of spiral supports having the connector are inevitably formed so that the spiral is extended. It has a special feature.

The invention described in claim 1 is the same that is attached to the end of one spiral support body and is fitted to the end of the other spiral support body in pairs. A connector having a shape, a cylindrical joint sleeve fixed to an end of one helical support body, and a male terminal extending from the end of the joint sleeve along the axial direction of the joint sleeve A mating protrusion and a space extending from the end of the joint sleeve along the axial direction of the joint sleeve, forming a space surrounding the engaging protrusion of the other connector, and engaging the other connector in the space. Engagement piece receiving piece that is a female terminal into which the mating protrusion can be inserted and removed, and an engagement release piece that releases the engagement of the engagement protrusion of the other connector housed inside the engagement protrusion receiving piece And the engagement protrusion and the engagement Between the single housing piece, the other connector engagement protrusion of, after being accommodated in the engagement protrusion accommodating pieces of one connector, the engaging protrusion of the other connector, the other connector The connector is guided in the direction of the engagement hole and engaged with the engagement hole , and the engagement protrusion of the other connector is perpendicular to the axial direction of the connector and the engagement protrusion of one connector. Since the movement protruding piece for restricting movement in the direction away from the one receiving piece and for restricting movement of the engaging protrusion of one connector in the above direction is provided , 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 described in claim 2 is the connector according to claim 1, movement restriction piece is a protrusion having a tapered surface at the distal end, in a part of the wall surrounding the Kakarigo突piece of the other connector Since it is characterized by being formed, it is not necessary to select the direction of the vertical direction because the male and female are connectors of the same shape, and it is a connector that is easy to remove and has excellent mass productivity.

The invention according to claim 3, The connector according to claim 1 or 2 wherein an engaging protrusion, the wall surrounding the Kakarigo突piece, the same length projecting length from the joint sleeve end of , and the movement restriction piece, because it has a feature that is shorter projecting length from the joint sleeve end than the wall surrounding the locking Go突pieces vertically because both sexes is a connector having the same shape Therefore, the connector is easy to remove and has excellent mass productivity.

The invention according to claim 4 is a spiral support device in which the spiral support device main body is formed in a spiral shape, and is supported in a state in which the striate body is inserted into the spiral support device body, and any one of claims 1 to 3 . Are attached to both ends of the spiral support body, and a plurality of spiral supports having the connector are inevitably formed so that the spiral is extended. In particular, since it has characteristics, it is not necessary to distinguish between the front and rear ends of the spiral support, and it is not necessary to pay attention to the assembly direction even when a plurality of spiral supports is combined. 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 the messenger wire and the outer diameter of the cable, which will be described later. Moreover, the length is a regular thing cut | disconnected by regular length, such as 750, 1000, 1500 mm normally.

FIG. 3 is a perspective view showing a first reference example 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 facing the center at the other end. Yes.

Further, one of the pair of bifurcated projections 21a out of the bifurcated projections 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. An engagement hole 214 and an engagement release piece 215 are formed behind the engagement protrusion 213.

  6A is a cross-sectional view when the connector is cut from the center portion in the planar direction, and FIG. 6B is a cross-sectional view when the connector is cut from the center 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 away from each other, 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.

8 is a front view, a plan view, and a bottom view showing a second reference example 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 the same shaped connectors 4 and 4 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 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 42 a, 42 b, 42 c, 42 d erected perpendicularly to the upper surface of the joint sleeve 3, and these side walls 42 a, 42 b, 42 c, 42 d. 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 on the upper portion. When the pushing portion 422a is pushed inward by the fingertip, the engagement release 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).

  In the state where the connectors 4 and 4 are connected as shown in FIG. 10, both the engaging protrusions 41 and 41 are inserted into the engaging protrusion receiving holes 42 and 42 opposed to the engaging protrusions 41 and 41, respectively. 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 both the 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 reference example 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 reference example has substantially the same configuration as the connector of the second reference example described above, only different parts will be described. First, although the inner side surface of the engagement protrusion 41 of the connector 4 in the second reference example described above is a tapered surface that is inclined outward as it goes upward, the engagement protrusion of the connector 5 of the third reference example. 51 is erected vertically from the upper surface of the joint sleeve 3.

The engaging protrusion receiving hole 42 of the second reference example square side walls 42a, 42b, 42c, although those 42d surrounds the hollow portion, as shown in the front view of FIG. 11, the third reference The engaging protrusion receiving hole 52 of the example 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. The other configuration is the same as that of the second reference example, and the description is omitted.

FIG. 14 is a front view, a plan view, and a bottom view showing an 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 mating release 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 the implementation form of this is a connector and substantially the same configuration of the second reference example described above, it will be described only different parts. First, the inner side surface of the engagement protrusion piece 41 of the connector 4 in the second reference example described above is a tapered surface that is inclined outward as it goes upward, but the engagement protrusion piece 61 of the connector 6 of the present embodiment. Is vertically erected from the upper surface of the joint sleeve 3.

Further, the engagement protrusion receiving hole 42 of the second reference example has four side walls 42a, 42b, 42c and 42d surrounding the hollow portion, but the engagement protrusion receiving hole 62 of the present embodiment has four sides. The side walls 62a, 62b, 62c, and 62d of the side walls 62c are shorter than the engaging protrusions 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. In addition, the side wall 62c has the other side after the engaging protrusion 61 of the other connector 6 is received in the engaging protrusion receiving holes 62 of the engaging protrusion receiving pieces 62a to 62d of the one connector 6. The engaging protrusion of the other connector 6 is guided in the direction of the engaging hole 621 of the other connector 6 and engaged with the engaging hole 621, and the engaging protrusion 61 of the other connector 6 is connected to the connector 6. Is restricted to the direction perpendicular to the axial direction and away from the engagement protrusion receiving pieces 62a to 62d of one connector, and the engagement protrusion 61 of one connector 6 is also restricted. This is a movement restricting piece that restricts movement in the direction. 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 reference example and the third reference example , description thereof is omitted.
Here, in the first reference example , since the connectors 2 and 2 can be coupled to each other even if one of the connectors 2 is rotated by 180 °, 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 reference example , the third reference example, and the present 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.

  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 of the end portion is set to be 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 the 1st reference example of the helical support tool which concerns on this invention . It is explanatory drawing at the time of seeing the connector of a 1st reference example from a plane direction and a side surface direction. It is explanatory drawing at the time of seeing the connector of a 1st reference example from the front direction and a side surface direction. (A) is a sectional view when the connector of the first reference example is cut from the central portion in the planar direction, and (b) is a sectional view when the connector of the first reference example is cut from the central portion in the front direction. . It is sectional drawing of the state which connected the connector of the 1st reference example . It is the front view, top view, and bottom view which show the connector of the 2nd reference example . It is a side view which shows the connector of the 2nd reference example . It is sectional drawing which shows the state which connected the connector of the 2nd reference example . It is the front view, top view, and bottom view which show the connector of the 3rd reference example . It is a side view which shows the connector of a 3rd reference example . It is sectional drawing which shows the state which connected the connector of the 3rd reference example . It is the front view which shows the connector of this embodiment, a top view, and a bottom view. It is a side view which shows the connector of this embodiment. It is an enlarged view which shows the engagement release piece of the connector of this embodiment. It is sectional drawing which shows the state which connected the connector of this embodiment. It is the schematic which shows the attachment state of a helical 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.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spiral support tool 2,4,5,6 Connector 3 Joint sleeve 7a, 7b Utility pole 8 Messenger wire

Claims (4)

It is a connector having the same shape that is attached to the end of one spiral support body, and is fitted to the end of the other spiral support body in a pair with each other,
A cylindrical joint sleeve fixed to the end of one 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;
Opposite to the engaging protrusion, it extends from the end of the joint sleeve along the axial direction of the joint sleeve, and forms a side wall that surrounds the engaging protrusion of the other connector. A female terminal in which the engaging protrusion of the other connector can be inserted into and removed from the space, and an engagement hole for engaging with the engaging protrusion of the other connector is formed in a part of the side wall. A mating piece containing piece,
An engagement release piece for releasing the engagement of the engagement projection piece of the other connector accommodated in the engagement projection piece accommodation piece,
Between the engagement projection piece and the engagement projection piece receiving piece,
After the engaging protrusion of the other connector is accommodated in the engaging protrusion receiving piece of one connector, the engaging protrusion of the other connector is guided in the direction of the engaging hole of the other connector. It is engaged with the engaging hole,
The engagement protrusion of the other connector is restricted from moving in a direction orthogonal to the axial direction of the connector and away from the engagement protrusion receiving piece of the one connector. A connector characterized in that a movement restricting piece for restricting movement in the above-mentioned direction is also provided for the engaging protruding piece . Movement restricting piece is a protrusion having a tapered surface at the distal end, the connector according to claim 1, characterized in that it is formed in a part of the wall surrounding the Kakarigo突piece of the other connector. Engaging protrusion, the wall surrounding the Kakarigo突pieces are identical length projecting length from the joint sleeve end,
Movement restriction piece connector according to claim 1 or 2, wherein the shorter projecting length from the joint sleeve end than the wall surrounding the locking Go突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 any one of claims 1 to 3 , wherein the connector is attached to both ends of the spiral support body, and the spiral inevitably extends when a plurality of spiral supports having the connector are joined together. A spiral support characterized by being formed.

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