JP2007097456A - Swinging tool for preventing bird injury and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a swinging tool for preventing bird injury, hardly having risk of being separated from an installing body. <P>SOLUTION: The swinging tool for preventing the bird injury is constituted as follows. A connecting recessed part 23 and a connecting protruded part 24 engaging to each other are formed at each one terminal of a mutually facing fixed arm part 21 and swinging arm part 22 forming an attaching ring-shaped part 20, so that the attaching ring-shaped part 20 may be attached to an electric wire 1 of the installing body by fitting the connecting protruded part 24 in the connecting recessed part 23. As a result, the fitting of the connecting recessed part 23 and the connecting protruded part is not released even if the electric wire 1 is swung in the upper and lower (vertical) direction by a strong external force caused by strong wind or the like to prevent the electric wire 1 from slipping away from the interior of the attaching ring-shaped part 20, to prevent the swinging tool for preventing the bird injury from coming off from the electric wire 1, and thereby to enable the swinging tool for preventing the bird injury to be attached strongly to the electric wire 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an oscillating bird damage prevention tool which is attached to a construction body extending in a substantially horizontal direction and prevents a bird from stopping on the construction body, and a method for manufacturing the same.

Conventionally, a bird damage prevention device that is attached to the erection body and prevents the bird from stopping on the erection body so that the bird does not cause harm such as excrement damage to the erection body that extends in a substantially horizontal direction such as an electric wire. It has been known.
As such a bird damage prevention tool, there are a large number of needle-like parts arranged along the longitudinal direction of the erected body, an elongated main body part in which these many needle-like parts are formed, and the main body part as a erected body. In order to lock, when the pair of locking portions respectively provided at both ends of the main body portion and the needle-like portion of the main body portion fall down due to an external force such as wind force, the needle-like portion is restored to the raised state. For example, a balance arm having a metal weight at the tip thereof is integrally formed.

Here, the latching portion closes the U-shaped holding portion capable of holding the installation body inside, and the opening of the holding portion formed in the U-shaped cross section, and from both end edges of the holding portion to each other. A pair of opening / closing doors projecting in the approaching direction, and a pair of hinges that connect the pair of opening / closing doors to the holding portion and elastically deform so that the opening / closing doors open toward the inside of the opening of the holding portion. ing.
In manufacturing such a bird damage prevention tool, an injection molding method in which a molten synthetic resin is injected into a mold is used. More specifically, a mold in which a holding pin for holding the metal weight described above is provided in a cavity for forming, the mold is closed with the metal weight held by the holding pin, and the closed mold is closed. The bird harm prevention tool is manufactured by an insert molding method in which a molten resin is injected into a mold.

In such a bird damage prevention device, when attaching the bird damage prevention device to the construction body, first, the opening of the holding portion is applied to the construction body, and in this state, the bird damage prevention device is pressed and held toward the construction body. The pair of opening / closing doors provided at both end edges of the part are pressed by the installation body, the opening / closing doors are rotated toward the inside of the opening, the opening of the holding part is opened, and the installation body is caused to enter the inside of the holding part. . Then, the bird harm prevention tool is further pressed to move the erection body to the back of the pivoting range of the opening / closing door, thereby returning the opening / closing door to its original state. Then, since the opening of the holding part is closed, the installation body is prevented from coming out of the holding part, and the installation work of the bird harm prevention tool is thus completed.
According to such a bird damage prevention device, it is possible to attach the bird damage prevention device to the installation body by simply pressing the bird damage prevention device toward the installation body, and to facilitate the installation work of the bird damage prevention device. Therefore, it is possible to sufficiently ensure safety when attaching the bird damage prevention device to a construction body such as an electric wire installed at a high place.

In addition, the bird harm prevention device attached to the construction body swings when the bird touches or wind blows, so that it can surely prevent the bird from stopping and also prevent snow from falling on the construction body. (For example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 2001-95 (FIG. 2)

However, in the bird damage prevention device as described above, the hinge that connects the opening / closing door to the holding portion is elastically deformed so that the opening / closing door opens toward the inside of the opening of the holding portion. When the installation body swings up and down (vertical direction), the installation body may press the doors from the inside, open the pair of doors to the outside, and the installation body may come out of the holding part. When this is added, there is a problem that the bird harm prevention tool may come off from the construction body.
In addition, when the bird damage prevention device is manufactured by the insert molding method, the holding pin mark of the holding pin that holds the metal weight is formed on the bird damage prevention device, and this holding pin mark is outside the bird damage prevention device and the surface of the metal weight. It becomes a passage that communicates with. For this reason, in bird protection tools that are placed outdoors exposed to wind and rain, acid rainwater reaches the surface of the metal weight through the retention pin mark, and the metal weight is gradually eroded by the acid rainwater over time. Therefore, there is a problem that it is difficult to ensure sufficient durability.

  The present invention has been made in view of the above problems, and a first object of the present invention is to provide a swinging bird harm prevention tool that is not likely to come off from the construction body. An object is to provide a method for manufacturing a swinging bird damage prevention device capable of ensuring sufficient durability.

Each invention described in each claim is made to achieve the above-mentioned object. The features of each invention will be described below with reference to the embodiments of the invention shown in the drawings.
In addition, a code | symbol shows the code | symbol used in embodiment of this invention, and does not limit the technical scope of this invention.
(Claim 1)
(Feature point)
The invention described in claim 1 is characterized by the following points.
That is, the invention described in claim 1 is attached to the erection body (1) extending in a substantially horizontal direction, and the swinging bird damage prevention device (10) prevents the bird from stopping on the erection body (1). And a main body portion (12) provided with a plurality of needle-like portions (11) along the longitudinal direction of the erected body (1), and provided near both ends of the main body portion (12). The mounting ring portion (20, 20A) is formed in a substantially annular shape so that the mounting body (1) can be inserted into the mounting body (1) so that the main body portion (12) is swingably mounted to the mounting body (1). And provided in the main body portion (12), protrudes from the main body portion (12) in a direction opposite to the protruding direction of the needle-like portion (11), and extends to the mounting annular portion (20, 20A). In order to circumvent the inserted construction body (1), a balance arm (13) that is curved in the middle of the construction body (1) and a main body (12) that is swingably attached to the construction body (1) Even if the needle-like part (11) falls down due to an external force, in order to restore the needle-like part (11) to its original standing state, a balance weight (14) provided at the tip of the balance arm (13) The mounting annular portion (20, 20A) is partially cut and includes a connection recess (23, 23B) at one of a pair of end portions facing each other, and the connection recess (23, 23B) at the other. ), And the connection recesses (23, 23B) are a pair of elastic deformation portions (31, 31) protruding toward the connection projections (24, 24B). A recess is formed by 31B), and a locking body (32, 32B) extending in a direction facing each other is formed at each tip portion of these elastically deformable portions (31, 31B), and the locking body (32 , 32B) is the movement locking surface (33, 33B) on the surface on the anti-connecting convex portion (24, 24B) side, and the connecting convex portion (24, 24B) faces the connecting concave portion (23, 23B). The base (41) extending forward and backward, and both side surfaces (41A) of the base (41) A bulging portion (42) that bulges from the bulging portion (42), and the bulging portion (42) is a pair of engaging guide surfaces inclined in a mountain shape toward the connecting recess (23, 23B) side of the bulging portion (42). (43) is formed, and a fixed locking surface (44) is formed on the side opposite to the connecting recess (23, 23B) as a projecting surface that intersects the direction of travel to the connecting recess (23, 23B). 24, 24B) and the connecting recess (23, 23B), the engagement guide surface (43) of the connecting projection (24, 24B) is the elastic deformation part (31) of the connecting recess (23, 23B) when trying to push , 31B), and when pushed further, the engaging guide surface (43) of the connecting convex part (24, 24B) widens the elastically deforming part (31, 31B) of the connecting concave part (23, 23B), and when pushed further, it expands. The protruding part (42) gets over the locking body (32, 32B) and is located between the elastically deforming parts (31, 31B), and the moving locking surface (33, 33B) is locked to the fixed locking surface (44). It is formed so as not to be pulled out.

Here, as the locking body (32, 32B) formed at the tip portion of the elastic deformation portion (31, 31B), the locking body (32 formed as a protrusion protruding from the side surface of the elastic deformation portion (31). ) Or a part of the side wall surrounding the through hole (34) that penetrates the elastic deformation part (31B) in the thickness direction, and extends from one opening of the through hole (34) toward the other opening. The locking body (32B) formed as a portion where the inner side surface thereof faces the anti-connection convex portion (24B) and becomes the movement locking surface (33B) can be employed.
(Claim 2)
(Feature point)
The invention described in claim 2 is the invention described in claim 1, and has the following characteristics.

That is, in the invention according to claim 2, each of the pair of elastically deforming portions (31) is an elongated portion extending in a rod shape, and each elastically deforming portion is provided at a tip portion of the two elastically deforming portions (31). A protrusion protruding from the inner side surface of (31) is provided as the locking body (32).
(Claim 3)
(Feature point)
The invention described in claim 3 is the invention described in claim 2 described above, and has the following characteristics.

That is, in the invention according to claim 3, the base portion (41) of the connecting convex portion (24), the bulging portion (42), and the pair of elastic members locked to the bulging portion (42). A pair of drop-off preventing collars (45) capable of covering both the deformation part (31) and the front and back are provided.
(Claim 4)
(Feature point)
The invention described in claim 4 is the invention described in claim 2 or 3 described above, and has the following characteristics.
That is, in the invention according to claim 4, the movement locking surface (33A) forms an inner corner portion with the inner side surface (31A) of the elastic deformation portion (31), and the elastic deformation portion (31). The side surface (31A) of the base portion (41A) intersects the side surface (31A) at an acute angle of less than 90 degrees, and the base locking portion (44A) forms a corner portion with the side surface (41A) of the base portion (41). It intersects with the side surface (41A) of (41) at an acute angle of less than 90 degrees.

(Claim 5)
(Feature point)
The invention described in claim 5 is the invention described in any one of claims 1 to 4 described above, and has the following characteristic points.
That is, the invention according to claim 5 includes a fixed arm portion (21) that extends in an arc shape on the mounting annular portion (20) and is fixed to the main body portion (12) so as not to move, and an arc shape. The swing arm portion (22) that extends and has a T-shaped cross section, and is thinner than the fixed arm portion (21) and the swing arm portion (22), and the fixed arm portion (21) A hinge part (27) for movably connecting one end of the swing arm part (22) is provided at one end, and the connection recess (23, 23B) and the other end of the fixed arm part (21) are provided. One of the connecting convex portions (24, 24B) is provided, and the other end of the swinging arm portion (22) is provided with the other of the connecting concave portions (23, 23B) and the connecting convex portions (24, 24B), When the connection recess (23, 23B) and the connection protrusion (24, 24B) are fitted to each other, the fixed arm portion (21) and the swing arm portion (22) form an annular shape. It is characterized by being.

(Claim 6)
(Feature point)
The invention described in claim 6 is characterized by the following points.
That is, the invention described in claim 6 is a swing type bird damage prevention device (10) attached to a erected body (1) extending in a substantially horizontal direction and preventing a bird from stopping on the erected body (1). In the manufacturing method, the swinging bird harm prevention tool (10) includes a main body (12) provided with a plurality of needle-like parts (11) along a longitudinal direction of the erected body (1); The body (1) can be inserted into the body (12) so that the body (12) is swingably attached to the body (1). A mounting annular portion (20, 20A) formed in a substantially annular shape, and a direction opposite to the protruding direction of the needle-like portion (11) from the main body portion (12), provided on the main body portion (12). A balance arm (13) that is curved in the middle to bypass the installation body (1) inserted through the mounting annular portion (20, 20A), and the installation body (1) Can swing Even if the needle-like part (11) of the main body part (12) attached to the functioning unit falls down due to an external force, the balance arm (13) is used to restore the needle-like part (11) to the original standing state. And a balance weight (14) provided at the front end of the main body (12), the mounting annular portion (20), and an injection molding method for injecting molten resin into the mold (3). When the balance arm (13) is integrally formed, the balance weight (14) is covered with a resin band (2) made of resin, and a holding part (6) provided inside the mold (3). After holding the resin band (2), the mold (3) is closed with the balance weight (14) held by the holding portion (6) via the resin band (2). The molten resin is injected into the mold (3).

(Effect of Claim 1)
The present invention configured as described above has the following effects.
That is, according to the first aspect of the present invention, as the mounting annular portion for attaching the swinging bird damage prevention device to the construction body, a part thereof is cut and fitted to each of the pair of end portions facing each other. A pair of elasticity is adopted in which a connecting concave portion and a connecting convex portion are provided, and the connecting concave portion protrudes toward the connecting convex portion, and the surface on the side opposite to the connecting convex portion is a movement locking surface. A deforming portion, and a pair of engaging guide surfaces inclined in a mountain shape on the connecting concave portion on the connecting convex portion, and a fixed locking surface on which the surface on the anti-connecting concave portion locks the above-described moving locking surface. Since the bulging portion has been provided, the connecting concave portion and the connecting convex portion can be firmly connected only by fitting one of the connecting concave portion and the connecting convex portion to the other, and thereby the mounting annular portion Can be attached to the erection body, making it easy to attach the swinging bird damage prevention tool to the erection body It can be carried out.

Here, for example, even if the connection concave part and the connection convex part are provided below the swinging bird damage prevention tool, if the swinging bird damage prevention tool is turned upside down, one of the connection concave part and the connection convex part is removed. It can be easily fitted to the other, and even if it is reversed, it automatically returns to its original state due to the weight of the balance weight, so that no extra operation such as manual return is possible.
In addition, by appropriately selecting the material, dimensions, etc. of the swinging bird damage prevention device including the mounting annular portion, the fitting strength of the connecting concave portion and the connecting convex portion is sufficiently ensured. If they are fitted together and the mounting ring is attached to the installation body, even if the installation body swings up and down (longitudinal direction) due to strong external forces such as strong winds, the connection recesses and connection protrusions will be disengaged. Therefore, the installation body does not come out from the inside of the mounting annular portion, and the swinging bird damage prevention device does not come off from the installation body, thereby installing the swinging bird damage prevention device. Can be firmly attached to the body.

(Effect of claim 2)
According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the following effect is obtained.
That is, according to the second aspect of the present invention, the elastically deforming portion of the connecting recess adopts a long and elongated rod-like shape, and the protruding portion as the locking body protrudes from the side surface inside the tip. When designing the part, it is not necessary to secure a large thickness dimension or width dimension in the elastic deformation part 31, and the length dimension of the elastic deformation part should be set according to the moving distance at the time of fitting Therefore, it does not become extremely large.

For this reason, the whole connection recessed part can be made thin and small. In addition, since the connecting convex portion fitted to the connecting concave portion has a size corresponding to the size of the connecting concave portion, like the connecting concave portion, the connecting convex portion can also be reduced, and the entire mounting annular portion can be reduced. It can be made compact.
Therefore, even if the mounting annular portion is provided at the end of the swinging bird damage prevention device, the end portion provided with the mounting annular portion does not become excessively large. It can be optimized for the thickness of the body.
(Effect of claim 3)
According to invention of Claim 3, in addition to the effect of invention of Claim 2 mentioned above, there exist the following effects.

That is, according to the third aspect of the present invention, a pair capable of covering both the bulging portion and the pair of elastic deformation portions locked to the bulging portion from the front and back at the base portion of the connecting convex portion. Since the drop-off preventing collar portion is provided, when the engaging body is locked to the bulging portion of the connecting convex portion, the elastically deforming portion of the connecting concave portion is deformed in a direction other than the direction intended in advance. It is prevented by the drop-off preventing collar, and the locking body at the tip thereof is not displaced in the thickness direction of the bulging portion, and the locking body is not displaced from the bulging portion due to displacement in the thickness direction. .
As a result, once the connecting recess and the connecting protrusion are fitted, the fitting cannot be easily released. Therefore, even if a strong force or the like is applied to the mounting ring due to a strong wind or the like, the mounting ring Is not detached from the erected body, and from this point also, the swinging bird harm prevention tool can be firmly attached to the erected body.

(Effect of claim 4)
According to invention of Claim 4, in addition to the effect of the invention of Claim 2 or 3 mentioned above, there exist the following effects.
That is, according to the invention described in claim 4, the movement locking surface forms the side surface and the corner portion of the elastic deformation portion, intersects the side surface of the elastic deformation portion with an acute angle of less than 90 degrees, and Since the fixed locking surface that locks the moving locking surface forms the side surface of the base portion and the corner portion, and intersects the side surface of the base portion at an acute angle of less than 90 degrees, the connecting concave portion and the connecting convex portion Even if an external force is applied in the direction of separating the two, the engaging body on the connecting recess side is inserted into the inner corner portion formed on the connecting convex side by the external force. The stop body does not come off from the bulging portion of the connecting convex portion, and the mounting strength of the swinging bird harm prevention tool to the construction body can be further strengthened.

(Effect of Claim 5)
According to the invention described in claim 5, in addition to the effect of the invention described in any one of claims 1 to 4, the following effect is obtained.
That is, according to the invention described in claim 5, the fixed arm portion and the swing arm portion that form the mounting annular portion extend in an arc shape, and the swing arm portion is further attached to the fixed arm portion via the hinge portion. In addition, since the cross-sectional shape of the swing arm portion is T-shaped, it is possible to sufficiently ensure the rigidity of the swing arm portion that can swing relative to the fixed arm portion.
For this reason, when the swing arm portion is swung from the position where the ring of the mounting annular portion is opened to the position where the ring is closed, the connecting concave portion and the connecting convex portion are automatically fitted to each other. When attaching to the joint, it is possible to engage the connecting recess and the connecting protrusion by swinging the swing arm with a relatively large size instead of the small connecting protrusion. The attachment work which attaches a type bird damage prevention tool to a construction body can be performed easily.

(Effect of claim 6)
According to invention of Claim 6, there exist the following effects.
That is, according to the invention of claim 6, the balance weight is covered with a resin band made of resin, and the balance weight is held via the resin band in the holding portion provided inside the mold. Since the mold is closed and molten resin is injected into the mold, the holding part does not come into contact with the balance weight, and the entire balance weight is wrapped in the resin forming the resin band and the newly injected resin. In rare cases, even if the holding trace of the holding portion is formed on the swinging bird damage prevention tool that is a molded product, the holding trace does not reach the surface of the balance weight inside the swinging bird damage prevention tool. .

For this reason, even if the balance weight is made of metal and the swinging bird damage prevention device is installed outdoors and exposed to wind and rain, the acid rainwater does not reach the surface of the balance weight and swings. The durability of the bird damage prevention tool can be sufficiently secured.

Hereinafter, an embodiment which is the best mode for carrying out the present invention will be described with reference to the drawings.
1 to 8 show this embodiment. FIG. 1 is a perspective view showing a swinging bird damage prevention apparatus according to this embodiment, FIG. 2 is a rear view showing the swinging bird damage prevention apparatus according to this embodiment, and FIG. FIG. 4 is an enlarged cross-sectional view showing the mounting annular portion according to the present embodiment, and FIG. 5 is an enlarged side view and enlarged plane showing the connecting recess according to the present embodiment. FIG. 6 is an enlarged side view and an enlarged cross-sectional view showing the connecting convex portion according to the present embodiment, FIG. 7 is a perspective view showing the balance weight and the resin band according to the present embodiment, and FIG. It is sectional drawing which shows the principal part of the rocking | fluctuation type bird harm prevention tool shape | molded with the metal mold | die concerning.

As shown in FIGS. 1 to 3, the swinging bird damage prevention tool 10 according to the present embodiment is configured to prevent the birds from stopping on the electric wire 1 as a construction body extending in a substantially horizontal direction. It can be attached to. In addition, as the electric wire 1 to which the swing type bird damage prevention device 10 according to the present embodiment is attached, a telegraph telephone that is stretched substantially horizontally between structures such as a plurality of telegraph poles standing on the ground. Either a cable for power transmission or a cable for power transmission may be used.
Such an oscillating bird harm prevention tool 10 is an injection-molded product obtained by injection-molding synthetic resin into a predetermined shape, and a main body portion 12 provided with a plurality of needle-like portions 11 along the longitudinal direction of the electric wire 1. It has. As a raw material for molding the swinging bird damage prevention tool 10, a synthetic resin such as polypropylene and polyethylene excellent in toughness and weather resistance against mechanical force and the like can be used.

In the main body part 12, a pair of balance arms 13 projecting in the opposite direction to the projecting direction of the needle-like part 11 at both ends of the main body part 12, and a balance weight 14 attached to each tip of the balance arm 13, The electric wire 1 is formed in a substantially annular shape that can be inserted therein, and an attachment annular portion 20 that attaches the main body portion 12 to the electric wire 1 so as to be swingable is provided. The side surface shape of the main body 12 is a cross shape (see FIG. 3).
Since the balance arm 13 bypasses the electric wire 1 inserted through the mounting annular portion 20, a part of the balance arm 13 is curved.
The balance weight 14 restores the needle-like portion 11 to the original standing state even when the needle-like portion 11 of the main body portion 12 attached to the electric wire 1 so as to be swingable falls down by an external force such as wind force. . Such a balance weight 14 is a permanent magnet formed in a columnar shape, and is embedded in a columnar portion 14A formed in a columnar shape at the tip of the balance arm 13. The cylindrical portion 14A is formed integrally with the main body portion 12, the balance arm 13, and the like, in other words, made of a synthetic resin that constitutes the swinging bird damage prevention tool 10.

The attachment annular portion 20 is a substantially circular annular portion that is partially cut. The mounting annular portion 20 has an arc shape and a fixed arm portion 21 that is fixed to the main body portion 12 so as not to move, and a swing that extends in an arc shape having a larger radius of curvature than the fixed arm portion 21. A hinge portion 27 (see FIG. 3) that is thinner than the arm portion 22, the fixed arm portion 21 and the swing arm portion 22, and one end of the swing arm portion 22 is slidably connected to one end of the fixed arm portion 21. For example).
Further, the mounting annular portion 20 includes a connection concave portion 23 at one end portion of a pair of end portions facing each other, and a connection convex portion 24 fitted to the connection concave portion 23 at the other end portion. .
More specifically, the connection recess 23 of the connection recess 23 and the connection protrusion 24 is provided at the other end of the fixed arm portion 21 that is not connected to the hinge portion 27. On the other hand, a connecting convex portion 24 of the connecting concave portion 23 and the connecting convex portion 24 is provided at the other end of the swing arm portion 22 that is not connected to the hinge portion 27. When the connecting recess 23 and the connecting protrusion 24 are fitted to each other, the fixed arm portion 21 and the swing arm portion 22 form a circular ring without a break.

Here, as shown in FIG. 4, the fixed arm portion 21 has a width dimension wider than that of the swing arm portion 22. In other words, the width dimension along the longitudinal direction of the electric wire 1 is the balance arm 13. It has been extended to the side. The base 13A of the balance arm 13 is integrally connected to the fixed arm 21.
Further, the fixed arm portion 21 is formed along an end edge on the side to which the balance arm 13 is connected (the right end edge in FIG. 4), and a rib 25 protruding from the inner peripheral surface of the fixed arm portion 21. Is provided. The rib 25 ensures sufficient rigidity for the fixed arm portion 21 to maintain its arcuate shape.

As shown in FIG. 4, the swing arm portion 22 has a T-shaped cross section. In other words, the oscillating arm portion 22 is provided with a rib 26 that protrudes from the central portion in the width direction on the outer peripheral surface thereof and extends almost the entire length in the longitudinal direction as shown in FIG. The rib 26 ensures sufficient rigidity for the swing arm portion 22 to maintain its arcuate shape.
As shown in FIG. 5, the connection recess 23 is formed by a pair of elastic deformation portions 31 protruding from the end edge 28 of the fixed arm portion 21 toward the connection protrusion 24.
At the respective tip portions of the pair of elastic deformation portions 31 provided in the connecting recess 23, the locking bodies extend in opposite directions, in other words, protrude from the opposing side surfaces of the pair of elastic deformation portions 31. 32 is formed. The surface on the anti-connection convex portion 24 side of each locking body 32, that is, the surface opposite to the connection convex portion 24 is a moving locking surface 33 that intersects the fitting direction.

In other words, each of the pair of elastic deformation portions 31 is an elongated portion extending in a bar shape. Each distal end portion of these elastically deformable portions 31 is provided with a protruding portion protruding from the inner side surface of the elastically deforming portion 31, and this protruding portion is a locking body 32, and by forming the protruding portion, The tip is shaped like a bowl. Then, the upper surface in the drawing of the locking body 32 that is the projection is directed to the opposite side of the connecting convex portion 24, and is a moving locking surface 33 that intersects the direction of fitting with the connecting convex portion 24. ing.
As shown in FIGS. 5 and 6, the connecting convex portion 24 includes a base portion 41 that extends back and forth toward the connecting concave portion 23, and a bulging portion 42 that bulges from both side surfaces 41 </ b> A of the base portion 41. It is.

Among these, the bulging portion 42 is a pair of engagement guide surfaces 43 formed so as to be inclined in a mountain shape on the connection concave portion 23 side of the bulging portion 42 and an anti-connection which is opposite to the connection concave portion 23 side. A fixing locking surface 44 formed as a projecting surface intersecting the traveling direction to the connecting recess 23 is provided on the recess 23 side. Note that the fixed locking surface 44 is substantially perpendicular to the direction of travel to the connecting recess 23.
Further, the base 41 of the connecting convex part 24 has a pair of drop-off preventing collars that can cover both the bulging part 42 and the pair of elastic deformation parts 31 locked to the bulging part 42 from the front and back sides. 45 is provided. When the locking body 32 is locked to the bulging portion 42 of the connecting convex portion 24 by the pair of drop-off preventing flange portions 45, the elastically deforming portion 31 of the connecting concave portion 23 is intended in advance. Deformation other than the direction, in particular, deformation in the thickness direction of the bulging portion 42 is prevented. For this reason, the elastic deformation portion 31 does not displace the locking body 32 at the tip thereof in the thickness direction of the bulging portion 42, etc., and is displaced in the thickness direction so that the locking body 32 is disengaged from the bulging portion 42. It will not come off.

In the above, when the connection concave portion 23 and the connection convex portion 24 try to push one into the other, the engagement guide surface 43 of the connection convex portion 24 comes into contact with the elastic deformation portion 31 of the connection concave portion 23, and further presses, When the engagement guide surface 43 of the connection convex part 24 spreads the elastic deformation part 31 of the connection concave part 23 and further pushes in, the bulging part 42 gets over the locking body 32 and is positioned between the pair of elastic deformation parts 31. The movement locking surface 33 is locked to the fixed locking surface 44 so as not to come off.
In this embodiment, when attaching the swinging bird damage prevention tool 10 to the electric wire 1, the fixed arm portion 21 of the swinging bird damage prevention tool 10 is straddled on the electric wire 1. Then, the swinging bird harm prevention tool 10 is stably placed on the electric wire 1 due to the so-called “frozen” effect of the balance arm 13 and the balance weight 14. In this state, when the swinging arm portion 22 is rotated and the connecting convex portion 24 is fitted into the connecting concave portion 23 of the fixed arm portion 21, the connecting concave portion 23 and the connecting convex portion 24 are firmly connected. Then, the mounting work of the swinging bird damage prevention tool 10 to the electric wire 1 is completed.

Further, in the present embodiment, the body part 12, the mounting annular part 20, the balance arm 13 and the like are integrally formed by an injection molding method in which a molten resin is injected into the mold, and thereby the swinging bird damage The prevention tool 10 is manufactured.
That is, in manufacturing the swinging bird damage prevention tool 10 by the injection molding method, as shown in FIG. 7, as a preparatory work for injection molding, first, a permanent magnet 14B formed in a columnar shape to be a balance weight 14 is used. The work of covering the periphery with a resin band 2 made of resin is performed. Here, the resin band 2 includes end surfaces 2A and 2B which are substantially flush with the end surfaces 14C and 14D of the permanent magnet 14B. Of these end faces 2A, 2B, one end face 2A is provided with a plurality of leg portions 2C projecting from a molding surface 3B of a mold 3 to be described later.

When the work of covering the periphery of the permanent magnet 14B with the resin band 2 made of resin is completed, the permanent magnet 14B is then installed inside the mold 3 as shown in FIG.
At this time, the mold 3 is divided into a plurality of parts such as the mold parts 4 and 5, and the permanent magnet 14B is placed on the molding surface 3A of the mold part 4 arranged at the lower side in FIG. A plurality of holding pins 6 are erected as holding parts for holding.
Then, the end surface 14D of the permanent magnet 14B arranged on the side opposite to the leg 2C of the resin band 2 is directed to the molding surface 3A of the mold part 4, and in this state, the permanent magnet 14B is molded to the mold part 4. The holding pin 6 is brought into contact with the end surface 2B of the resin band 2 by approaching the surface 3A.

When the permanent magnet 14B is held by the holding pin 6 in this manner, the permanent magnet 14B is placed at a predetermined position on the molding surface 3A where a predetermined space 7A is secured around the permanent magnet 14B. Further, the holding pin 6 ensures a space between the end surface 14D of the permanent magnet 14B and the molding surface 3A, in other words, a predetermined space 7B.
When the installation work of the permanent magnet 14B inside the mold 3 is completed, the upper mold part 5 in FIG. 8 is moved toward the mold part 4, and the mold 3 is closed. In this closed state, the leg 2C formed on the end surface 2A of the resin band 2 abuts on the molding surface 3B of the mold part 5, and the interval between the end surface 14C of the permanent magnet 14B and the molding surface 3B, in other words, a predetermined space. 7C is secured.

Then, molten resin is injected into the closed mold 3 to mold the swinging bird damage prevention tool 10. Then, the space 7A secured around the permanent magnet 14B, the space 7B secured by the holding pin 6, and the space 7C secured by the leg 2C are filled with the molten resin, and the permanent magnet 14B is shown in FIG. As described above, the entire surface including the outer peripheral surface and the end surfaces 14C and 14D is covered with the resin.
At this time, the trace of the holding pin 6, in other words, the hole 6A formed by the holding pin 6 reaches the end surface 2B of the resin band 2, but does not reach the permanent magnet 14B.
According to this embodiment as described above, the following effects can be obtained.
That is, as a mounting annular portion 20 for mounting the swinging bird damage prevention device 10 to the electric wire 1, a part thereof is cut, and a connecting concave portion 23 and a connecting convex portion are fitted into each of a pair of opposite end portions. A pair of elastically deforming portions that employ a portion provided with a portion 24, project into the connecting concave portion 23 toward the connecting convex portion 24, and have a surface on the anti-connecting convex portion 24 side as a movement locking surface 33. 31 and a pair of engaging guide surfaces 43 inclined in a mountain shape on the connecting concave portion 23 side and a surface on the anti-connecting concave portion 23 side to fix the aforementioned movement locking surface 33 on the connecting convex portion 24. Since the bulging portion 42 that has become the locking surface 44 is provided, the connection recess 23 and the connection projection 24 are firmly connected only by fitting one of the connection recess 23 and the connection projection 24 to the other. As a result, the mounting annular portion 20 can be attached to the electric wire 1, and the attachment work of the swinging bird damage prevention device 10 to the electric wire 1 can be performed. It can be carried out in.

Here, a balance arm 13 and a balance weight 14 are provided in the swinging bird damage prevention device 10, and the balance arm 13 and the balance weight 14 exert a so-called “frozen” effect. If the fixed arm portion 21 of the swinging bird damage prevention device 10 is straddled on the upper side, the swinging bird damage prevention device 10 is stably placed on the electric wire 1. Thus, it is possible to easily attach the swinging bird damage prevention tool 10 to the electric wire 1.
In addition, since the swing type bird harm prevention tool 10 is formed of a synthetic resin excellent in toughness and weather resistance with respect to mechanical force, etc., the fitting strength of the connecting concave portion 23 and the connecting convex portion 24 is sufficiently secured, By fitting the connecting recess 23 and the connecting projection 24 to each other to attach the mounting annular portion 20 to the electric wire 1, even if the electric wire 1 is shaken up and down (vertical direction) by a strong external force due to strong winds, etc. The fitting of the concave portion 23 and the connecting convex portion 24 is not released. Therefore, the electric wire 1 does not come out from the inside of the mounting annular portion 20, and the swinging bird damage prevention device 10 is detached from the electric wire 1. Without this, the swinging bird harm prevention tool 10 can be firmly attached to the electric wire 1.

Further, as the elastically deforming portion 31 of the connecting concave portion 23, an elongated, rod-like one is adopted, and the protruding portion protruding from the side surface inside the tip is used as the locking body 32. In addition, it is not necessary to secure a large thickness dimension or width dimension in the elastically deformable portion 31, and the length dimension of the elastically deformable portion 31 may be set according to the moving distance at the time of fitting. Never become.
For this reason, the whole connection recessed part 23 can be made thin and small. In addition, since the connecting convex portion 24 fitted to the connecting concave portion 23 has a size corresponding to the size of the connecting concave portion 23, similarly to the connecting concave portion 23, the connecting convex portion 24 can also be made small. The entire mounting annular portion 20 can be made compact.

Therefore, even if the mounting annular portion 20 is provided at the end of the swinging bird damage prevention device 10, the end portion provided with the mounting annular portion 20 does not become excessively large, and the size of the mounting annular portion 20 is increased. It is possible to optimize the thickness corresponding to the thickness of the electric wire 1 to be attached.
Furthermore, a pair of drop-off prevention hooks capable of covering both the bulging portion 42 and the pair of elastic deformation portions 31 locked to the bulging portion 42 on the base 41 of the connecting convex portion 24 from the front and back sides. Since the portion 45 is provided, when the locking body 32 is locked to the bulging portion 42 of the connecting convex portion 24, the elastically deforming portion 31 of the connecting concave portion 23 is deformed in a direction other than the direction intended in advance. Is prevented by the drop-off preventing collar portion 45, and the locking body 32 at the tip thereof is not displaced in the thickness direction of the bulging portion 42, etc., and is displaced in the thickness direction so that the locking body 32 is bulged. No more than 42.

Thereby, once the coupling recess 23 and the coupling projection 24 are fitted, the fitting cannot be easily released, so even if a strong force is applied to the mounting annular part 20 due to strong winds, The attachment annular portion 20 is not detached from the electric wire 1, and the swinging bird damage prevention tool 10 can be firmly attached to the electric wire 1 from this point.
Further, the fixed arm portion 21 and the swing arm portion 22 that form the mounting annular portion 20 extend in an arc shape, and further, the swing arm portion 22 is connected to the fixed arm portion 21 via the hinge portion 27, and Since the cross-sectional shape of the swing arm portion 22 is T-shaped, the rigidity of the swing arm portion 22 that can swing relative to the fixed arm portion 21 can be sufficiently secured.

For this reason, when the swing arm portion 22 is swung from the position where the ring of the mounting annular portion 20 is opened to the position where the ring is closed, the connection recess 23 and the connection projection 24 are automatically fitted to each other. When attaching the portion 20 to the electric wire 1, the connecting recess 23 and the connecting protrusion 24 can be fitted by swinging the swing arm portion 22 having a relatively large size instead of the small connecting protrusion 24. Thus, also from this point, the mounting work for attaching the swinging bird damage prevention tool 10 to the electric wire 1 can be facilitated.
Further, when the swing type bird harm prevention device 10 is manufactured by the injection molding method, before the injection molding, the periphery of the permanent magnet 14B serving as the balance weight 14 is covered with the resin band 2 made of resin, and the mold 3 Since the permanent magnet 14B is held by the holding pin 6 provided inside through the resin band 2, and the mold 3 is closed in this state and the molten resin is injected into the inside, the holding pin 6 is made permanent. The permanent magnet 14B as a whole is wrapped in the resin forming the resin band 2 and the newly injected resin without contacting the magnet 14B, and the holding pin is attached to the swinging bird damage prevention tool 10 which is a molded product. 6A, the hole 6A may reach the surface of the permanent magnet 14B (balance weight 14) embedded in the synthetic resin constituting the swinging bird damage prevention device 10. Absent.

Therefore, even if the balance weight 14 is made of metal and the swinging bird damage prevention device 10 is installed outdoors and exposed to wind and rain, acid rainwater does not reach the balance weight 14 surface. The durability of the swinging bird damage prevention tool 10 can be sufficiently ensured.
In addition, this invention is not limited to the said embodiment, The deformation | transformation in the range which can achieve the objective of this invention, improvement, etc. are included. In the following description, the same reference numerals are given to the same parts as those in the above embodiment, and the description thereof is omitted or simplified.
For example, the movement locking surface is not limited to one that forms the inner side surface and the inner corner portion of the elastic deformation portion and intersects the inner side surface of the elastic deformation portion at approximately 90 degrees. Although it is common in the point which forms a side surface and a corner part, it may differ in the point which cross | intersects the inner side surface of an elastic deformation part at an acute angle of less than 90 degree | times.

Further, the fixed locking surface for locking the movement locking surface is not limited to the one that forms the side surface of the base portion and the corner portion and intersects the side surface of the base portion at approximately 90 degrees, but the side surface and the corner portion of the base portion are not limited. Although it is common in the point which forms a part, it may differ in the point which cross | intersects the side surface of a base at an acute angle of less than 90 degree | times.
FIG. 9 shows a movement locking surface 33A and a fixed locking surface 44A as an example.
That is, as shown in FIG. 9, the movement locking surface 33A forms a corner portion with the inner side surface 31A of the elastically deformable portion 31, and also intersects the side surface 31A with an acute angle of less than 90 degrees, in other words, The crossing angle α with the side surface 31A is a surface having an acute angle of less than 90 degrees.

Further, as shown in FIG. 9, the fixed locking surface 44A forms a corner portion with the side surface 41A of the base portion 41, and intersects the side surface 41A at an acute angle of less than 90 degrees, in other words, the side surface 41A. The crossing angle β is an acute angle less than 90 degrees.
By adopting such a movement locking surface 33A and a fixed locking surface 44A, even if an external force is applied in a direction to separate the connecting concave portion 23 and the connecting convex portion 24, the external force causes the locking body on the connecting concave portion 23 side. 32 is inserted into the inner corner formed on the connecting convex portion 24 side, so that the locking body 32 on the connecting concave portion 23 side may come off from the bulging portion 42 of the connecting convex portion 24. Therefore, it is possible to further strengthen the strength of attaching the swinging bird damage prevention tool 10 to the electric wire 1 or the like.

Further, the mounting annular portion is not limited to one in which the fixed arm portion, the swing arm portion, and the hinge portion are integrally formed. As shown in FIG. 10, the fixed arm portion 21A and the swing arm portion 22A are separately provided. The mounting annular portion 20A formed as a part of the above may be used.
That is, each of the fixed arm portion 21A and the swing arm portion 22A is provided with a bearing cylinder portion 27A that can communicate with each other. In the fixed arm portion 21A and the swing arm portion 22A, the connecting pin 27B is inserted into both of the bearing tube portions 27A. Thus, the swing arm portion 22A is connected to the fixed arm portion 21A so as to be swingable. Even when such an attachment annular portion 20A is employed, the same operation and effect as the attachment annular portion 20 in which the fixed arm portion 21, the swing arm portion 22, and the hinge portion 27 are integrally formed can be achieved.

Further, in the above embodiment, the connection recess 23 is provided in the fixed arm portion 21 and the connection projection portion 24 is provided in the swing arm portion 22. Conversely, the connection projection portion 24 is provided in the fixed arm portion 21 and swings. A connecting recess 23 may be provided in the arm portion 22. Further, the locking body formed at the tip portion of the elastic deformation portion is not limited to the protrusion formed from the side surface of the elastic deformation portion, and the elastic deformation portion 31B has a thickness as shown in FIG. A locking body 32B made up of a portion that surrounds the through-hole 34 penetrating in the direction and is located on the connecting convex portion 24B side may be employed.
That is, in FIG. 11, the connecting convex part 24B is provided on a fixed arm part (not shown) arranged above a swinging arm part (not shown), and the connecting concave part 23B is provided on a lower swinging arm part.

The connecting recess 23B includes a pair of elastic deformation portions 31B extending upward in FIG. 11, and is a recess opened upward by the pair of elastic deformation portions 31B.
Each elastically deforming portion 31B is formed in a wall shape and has a through-hole 34 that penetrates the front and back of the wall shape in the thickness direction.
Of the frame-shaped portion surrounding the through hole 34 penetrating the elastically deforming portion 31B, a portion located on the connecting convex portion 24B side, in other words, a portion on the tip edge side is the locking body 32B.
When viewed from the outer surface of the elastic deformation portion 31B, the locking body 32B protrudes from the outer opening of the through hole 34 toward the inner opening, and the surface serving as the inner surface of the through hole 34 is the anti-connection convex portion 24B. This is a moving locking surface 33B.

  Even when the locking body 32B formed as a part of the part surrounding the through hole 34 is employed, the locking body 32 is formed as a protrusion protruding from the side surface of the elastically deformable portion 31 in the embodiment. The effects and effects can be achieved.

It is a perspective view which shows the rocking | fluctuation type bird harm prevention tool which concerns on one Embodiment of this invention. It is a rear view which shows the rocking | fluctuation type bird harm prevention tool which concerns on the said embodiment. It is a side view which shows the rocking | fluctuation type bird harm prevention tool which concerns on the said embodiment. It is an expanded sectional view which shows the attachment annular part which concerns on the said embodiment. (A) is an enlarged side view which shows the connection recessed part which concerns on the said embodiment, (B) is the enlarged plan view seen from the arrow line B of (A). (A) is an enlarged side view which shows the connection convex part which concerns on the said embodiment, (B) is sectional drawing in the BB line of (A). It is a perspective view which shows the balance weight and resin band which concern on the said embodiment. It is sectional drawing which shows the principal part of the rocking | fluctuation type bird harm prevention tool shape | molded with the metal mold | die which concerns on the said embodiment. It is sectional drawing which shows the connection recessed part and connection convex part which concern on the modification of this invention. It is a figure equivalent to FIG. 3 which shows the modification of this invention. It is sectional drawing which shows the connection recessed part which concerns on the modification of this invention.

Explanation of symbols

1 Electric wire as installation body 2 Resin 3 Mold
10 Swing type bird damage prevention device
11 Needle-shaped part
12 Body
13 Balance arm
14 Balance weight
14B Permanent magnet for balance weight
20,20A mounting ring
21 Fixed arm
22 Swing arm
23,23B Connection recess
24,24B Connecting convex part
27 Hinge
31,31B Elastic deformation part
32,32B Locking body
33,33B Movement locking surface
41 Base
41A Both sides of base
42 bulge
43 Engagement guide surface
44 Fixed locking surface
45 Fall prevention collar

Claims (6)

An oscillating bird damage prevention tool that is attached to a construction body extending in a substantially horizontal direction and prevents a bird from stopping on the construction body,
A main body provided with a plurality of needle-like portions along the longitudinal direction of the erected body,
An attachment annular portion that is provided in the vicinity of both ends of the main body, and is formed in a substantially annular shape so that the main body can be inserted into the main body so as to be swingable.
Provided in the main body portion, protrudes in a direction opposite to the protruding direction of the needle-like portion from the main body portion, and is curved in the middle to bypass the installation body inserted through the mounting annular portion The balance arm,
Provided at the tip of the balance arm to restore the needle-like portion to its original standing state even if the needle-like portion of the main body portion swingably attached to the construction body falls down due to an external force. With balance weight,
The mounting annular portion is partially cut, and includes a connection concave portion on one of a pair of end portions facing each other, and a connection convex portion that fits the connection concave portion on the other,
The connection recess is formed by a pair of elastic deformation portions protruding toward the connection protrusion,
At each tip portion of these elastically deformable portions, a locking body extending in a direction facing each other is formed, and the surface on the anti-connection convex portion side of the locking body is a moving locking surface,
In the connection convex portion, a base portion extending back and forth toward the connection concave portion,
A bulging portion bulging from both side surfaces of the base portion is formed,
The bulging portion has a pair of engaging guide surfaces inclined in a mountain shape on the connecting concave portion side of the bulging portion, and a fixed locking surface as a protruding surface intersecting the direction of travel to the connecting concave portion on the anti-connecting concave portion side. Formed,
When the connection convex portion and the connection concave portion are to be pushed in, the engagement guide surface of the connection convex portion comes into contact with the elastic deformation portion of the connection concave portion, and when further pressed, the engagement guide surface of the connection convex portion is elastic of the connection concave portion. When the deformed part is expanded and further pushed in, the bulging part gets over the locking body and is positioned between the elastically deforming parts, so that the moving locking surface is locked to the fixed locking surface and does not come off Oscillating bird damage prevention device.   Each of the pair of elastically deforming portions is an elongated and extending portion extending in a rod shape, and a protruding portion protruding from the inner side surface of each elastically deforming portion is provided as the locking body at the tip portion of these two elastically deforming portions The swing type bird harm prevention tool according to claim 1, wherein   The base part of the connecting convex part is provided with a pair of drop-off preventing collars capable of covering both the bulging part and the pair of elastic deformation parts engaged with the bulging part from the front and back sides. The swinging bird damage prevention device according to claim 2, wherein The movement locking surface forms an inner corner portion and an inner corner portion of the elastic deformation portion, intersects the side surface of the elastic deformation portion with an acute angle of less than 90 degrees, and
The rocking surface according to claim 2 or 3, wherein the fixed locking surface forms a side corner and a corner portion of the base portion, and intersects the side surface of the base portion at an acute angle of less than 90 degrees. Dynamic bird harm prevention tool. The mounting annular portion extends in an arc shape and is fixed to the main body portion so as not to be movable,
An oscillating arm portion extending in an arc shape and having a T-shaped cross section;
A hinge portion that is thinner than the fixed arm portion and the swing arm portion, and that is connected to one end of the fixed arm portion so as to be swingable.
One of the connection concave portion and the connection convex portion is provided at the other end of the fixed arm portion,
The other end of the swing arm portion is provided with the other of the connection recess and the connection protrusion.
5. The structure according to claim 1, wherein the fixed arm portion and the swing arm portion form an annular shape when the connecting concave portion and the connecting convex portion are fitted to each other. The rocking bird damage prevention device according to crab. A method of manufacturing a swinging bird damage prevention tool that is attached to a construction body extending in a substantially horizontal direction and prevents a bird from stopping on the construction body,
The swinging bird harm prevention tool has a main body portion provided with a plurality of needle-like portions along the longitudinal direction of the erected body,
An attachment annular portion that is provided in the vicinity of both ends of the main body, and is formed in a substantially annular shape so that the main body can be inserted into the main body so as to be swingable.
The intermediate portion is provided in the main body portion, protrudes from the main body portion in a direction opposite to the protruding direction of the needle-like portion, and bypasses the installation body inserted through the mounting annular portion. A curved balance arm,
Provided at the tip of the balance arm to restore the needle-like portion to its original standing state even if the needle-like portion of the main body portion swingably attached to the construction body falls down due to an external force. With balance weight,
In the injection molding method of injecting molten resin into the mold, the body part, the mounting annular part, and the balance arm are integrally formed.
Cover the periphery of the balance weight with a resin band made of resin, and hold the resin band with a holding portion provided inside the mold,
An oscillating bird harm prevention tool characterized in that the mold is closed while the balance weight is held by the holding portion via the resin band, and molten resin is injected into the mold. Production method.

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