gold wrist

Abstract

To provide an armor to prevent bird nesting.SOLUTION: An armor includes an armor main body 1 and a bird prevention member 2, the armor main body 1 is formed from an aluminum profile, and the bird prevention member 2 is inserted into a hollow portion 12 from an end of the armor main body 1 and fixed to the armor main body 1 by crimping from the periphery.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to an arm bracket attached to a utility pole.

Background Art

[0002] An arm bracket is attached to the utility pole for stringing electric wires. Conventionally, the arm bracket is formed of a steel square pipe, and there is a problem that birds can enter from a small opening into the interior and build nests.

Summary of the Invention

Problems to be Solved by the Invention

[0003] In view of the above situation, an object of the present invention is to provide an arm bracket that can prevent birds from building nests.

Means for Solving the Problems

[0004] The arm bracket according to the invention described in claim 1 for achieving the above problems includes an arm bracket main body and a bird intrusion prevention member. The arm bracket main body is formed of an aluminum profile, and the bird intrusion prevention member is inserted into the hollow portion from the end of the arm bracket main body and fixed to the arm bracket main body by caulking from the periphery.

Effects of the Invention

[0005] The arm bracket according to the invention described in claim 1 includes an arm bracket main body and a bird intrusion prevention member. The arm bracket main body is formed of an aluminum profile, and the bird intrusion prevention member is inserted into the hollow portion from the end of the arm bracket main body and fixed to the arm bracket main body by caulking from the periphery. Therefore, it can prevent birds from building nests. The bird intrusion prevention member can be easily attached simply by inserting it into the hollow portion of the arm bracket main body and caulking from the periphery, and there is no worry of it coming off.

Brief Description of the Drawings

[0006] [Figure 1] It is a perspective view showing an enlarged end portion of the arm bracket of the first embodiment, where (a) shows the state before attaching the bird intrusion prevention member to the arm bracket main body, and (b) shows the state after attaching the bird intrusion prevention member to the arm bracket main body. [Figure 2] This is a perspective view of the arm of the first embodiment. [Figure 3] This is a perspective view showing an enlarged view of the end of the bracket of the second embodiment, where (a) shows the state before the bird intrusion prevention member is attached to the bracket body, and (b) shows the state after the bird intrusion prevention member has been attached to the bracket body. [Figure 4] This is a perspective view showing an enlarged view of the end of the arm of the third embodiment, where (a) shows the state before the bird intrusion prevention member is attached to the arm body, and (b) shows the state after the bird intrusion prevention member is attached to the arm body. [Figure 5] A side view and a longitudinal cross-sectional view of the third embodiment of the bracket, where (a) shows the state before the bracket body is crimped and (b) shows the state after the bracket body has been crimped. [Figure 6] This is a perspective view showing an enlarged view of the end of the arm of the fourth embodiment, where (a) shows the state before the bird intrusion prevention member is attached to the arm body, and (b) shows the state after the bird intrusion prevention member has been attached to the arm body. [Figure 7] A side view and a longitudinal cross-sectional view of the fourth embodiment of the bracket, where (a) shows the state before the bracket body is crimped and (b) shows the state after the bracket body has been crimped. [Figure 8] This is a side view of the arm of the fifth embodiment. [Modes for carrying out the invention]

[0007] Embodiments of the present invention will be described below with reference to the drawings. Figures 1 and 2 show a first embodiment of the cross arm of the present invention. As shown in Figure 2, this cross arm comprises a cross arm body 1 and bird intrusion prevention members 2 attached to both ends of the cross arm body 1 in the longitudinal direction.

[0008] The crossarm body 1 is formed from an extruded aluminum alloy profile and, as shown in Figures 1 and 2, is a cylindrical shape with a square cross-section having an upper wall 5, a lower wall 6, and a pair of side walls 7, 7. The crossarm body 1 has slits 3 formed in the upper wall 5 and lower wall 6 at both ends in the longitudinal direction, which serve as the locking points for the bird intrusion prevention member 2, and are oriented to intersect the longitudinal direction. The side walls 7, 7 of the crossarm body 1 have elongated holes 10 for inserting bolts 9 for fixing the crossarm body 1 to the utility pole 8. The crossarm body 1 also has mounting holes formed as appropriate for attaching equipment such as insulators (not shown) that receive electric wires.

[0009] The bird intrusion prevention member 2 is formed by cutting an aluminum profile to a predetermined length, and as shown in Figure 1(a), it has inclined portions 11, 11 at the top and bottom that are inclined outward in the longitudinal direction of the arm body 1, and locking portions 4, 4 are provided at the tips of each inclined portion 11, 11 that protrude in the vertical direction. As shown by the arrow in Figure 1(a), when this bird intrusion prevention member is pushed into the hollow section 12 from the end of the arm body 1, the upper and lower inclined sections 11, 11 elastically deform so that they bend inward, and then the locking sections 4, 4 at the upper and lower ends elastically lock into the slit 3 of the arm body 1, fixing it to the arm body 1 as shown in Figure 1(b). This bracket, by attaching bird intrusion prevention members 2 to both ends of the bracket body 1 in this manner, can prevent birds from entering the hollow portion 12 of the bracket body 1 and building nests.

[0010] This crossarm is fixed to the utility pole 8 using a band 13 wrapped around the pole, bolts 9,9 and nuts 14,14, similar to conventional designs (see Figure 2). Because the crossarm body 1 is made of aluminum and is lightweight, installation on the utility pole 8 is easy.

[0011] Figure 3 shows a second embodiment of the arm of the present invention, in which the shape of the bird intrusion prevention member 2 differs from that of the first embodiment. As shown in Figure 3(a), the bird intrusion prevention member 2 is formed in a substantially U-shape having upper and lower horizontal walls 15, 15 and a vertical wall 16, with a locking portion 4 formed facing downward at the tip of the upper horizontal wall 15 and a locking portion 4 formed facing upward at the tip of the lower horizontal wall 15. As shown by the arrows in Figure 3(a), when the upper and lower side walls 15, 15 are pushed into the end of the arm body 1 from the outside, the upper and lower side walls 15, 15 elastically deform so that they bend outwards, and then the locking parts 4, 4 provided at their tips elastically lock into the slits 3 of the arm body 1, fixing the bird intrusion prevention member 2 to the arm body 1 as shown in Figure 3(b).

[0012] Figures 4 and 5 show a third embodiment of the arm of the present invention. As shown in Figure 4(a), the bird intrusion prevention member 2 is in the shape of a rectangular plate. The vertical dimension of the bird intrusion prevention member 2 is approximately the same as the vertical dimension of the hollow portion 12 of the arm body 1, and the horizontal dimension is smaller than the horizontal dimension of the hollow portion 12 of the arm body 1. In this embodiment, as shown in Figure 4, the bird intrusion prevention member 2 is inserted into the hollow portion 12 from the end of the arm body 1 and crimped by pressing it from above and below with a press machine 17. At that time, as shown in Figure 5(a), by pressing through the pointed pressing portion 22, the pressed portions of the upper wall 5 and lower wall 6 of the arm body 1 are plastically deformed so that they bulge inward, as shown in Figure 5(b), gripping the bird intrusion prevention member 2 from above and below, and thereby fixing the bird intrusion prevention member 2 to the arm body 1.

[0013] Figures 6 and 7 show a fourth embodiment of the arm of the present invention. The bird intrusion prevention member 2 is made of an aluminum profile and, as shown in Figure 6(a), has an X-shaped portion 22 located diagonally across the hollow portion 12 of the arm body 1, with the tips of each radially extending side contacting the corner portions of the hollow portion 12 of the arm body 1. As shown in Figure 6, in this embodiment, the bird intrusion prevention member 2 is inserted into the hollow portion 12 from the end of the arm body 1 and crimped by pressing from above and below with a press machine 17. At that time, as shown in Figure 7(a), by pressing through the pointed pressing portion 22, the pressed portions of the upper wall 5 and lower wall 6 of the arm body 1 are plastically deformed so that they bulge inward, as shown in Figure 7(b), gripping the bird intrusion prevention member 2 from above and below, and thereby fixing the bird intrusion prevention member 2 to the arm body 1. The bird intrusion prevention member 2 has an X-shaped portion 22 in cross-section, and the tips of each side of the X-shaped portion 22 abut against the corners of the hollow portion 12 of the arm body 1, so that the posture of the bird intrusion prevention member 2 is stable when inserted into the hollow portion 12 of the arm body 1, and thus the crimping fixation can be performed efficiently.

[0014] Figure 8 shows a fifth embodiment of the arm of the present invention. The bird intrusion prevention member 2 has an X-shaped cross section 22 similar to that of the fourth embodiment, and also has fin pieces 23 between the diagonal pieces of the X-shaped section 22. A gap 24 is provided between the tip of each fin piece 23 and the arm body 1. In this embodiment, the arm has an X-shaped portion 22 in the bird intrusion prevention member 2, and the tips of each side of the X-shaped portion 22 abut against the corners of the hollow portion 12 of the arm body 1. As with the fourth embodiment, the position of the bird intrusion prevention member 2 is stabilized when inserted into the hollow portion 12 of the arm body 1, allowing for efficient fixing by crimping. Furthermore, by providing fin pieces 23 between the diagonal pieces of the X-shaped portion 22, the hollow portion 12 of the arm body 1 is divided more finely by the bird intrusion prevention member 2, so that bird intrusion can be prevented even if the cross-section of the arm body 1 is large.

[0015] As described above, the present arm (first and second embodiments) comprises an arm body 1 and a bird intrusion prevention member 2. The arm body 1 is made of an aluminum profile and has a locking portion 3 for the bird intrusion prevention member 2 at its longitudinal end. The bird intrusion prevention member 2 is fixed to the arm body 1 by elastically locking the locking portions 3 from the inside or outside of the arm body 1 with locking portions 4 provided at both ends, thereby preventing birds from nesting. The bird intrusion prevention member 2 can be easily installed without the use of tools and there is no need to worry about it coming off. In addition, the main arm band (first and second embodiments) is made of an aluminum profile for the arm band body 1, which is lighter and easier to handle than the conventional steel one. Also, because it is made of an aluminum profile, it has excellent weather resistance, so maintenance costs can be reduced and it is also advantageous in terms of cost. Since the engaged portion 3 of the arm band body 1 is formed in a slit shape, the bird intrusion prevention member 2 can be securely attached and can also be easily formed by pressing.

[0016] The main arm band (third to fourth embodiments) includes an arm band body 1 and a bird intrusion prevention member 2. The arm band body 1 is formed of an aluminum profile, and the bird intrusion prevention member 2 is inserted into the hollow portion 12 from the end of the arm band body 1 and caulked from the surroundings to be fixed to the arm band body 1, so that it is possible to prevent birds from nesting. The bird intrusion prevention member 2 can be easily attached simply by inserting it into the hollow portion 12 of the arm band body 1 and caulking it from the surroundings, and there is no worry of it coming off. In addition, the main arm band (third to fourth embodiments) is made of an aluminum profile for the arm band body 1, which is lighter and easier to handle than the conventional steel one. Also, because it is made of an aluminum profile, it has excellent weather resistance, so maintenance costs can be reduced and it is also advantageous in terms of cost. In the arm band of the third embodiment, since the bird intrusion prevention member 2 is in a plate shape, the bird intrusion prevention member 2 can be manufactured at a low cost. In the arm bands of the fourth and fifth embodiments, the bird intrusion prevention member 2 has a cross-sectional X-shaped portion 22, and the tip portions of each side of the X-shaped portion 22 abut against the corner portions of the hollow portion 12 of the arm band body 1 respectively, so that the posture of the bird intrusion prevention member 2 is stabilized when it is inserted into the hollow portion 12 of the arm band body 1, and caulking-based fixing can be efficiently performed.

[0017] The present invention is not limited to the embodiments described above. The cross-sectional shape of the arm band body may be rectangular, trapezoidal, etc. The shape and material of the bird intrusion prevention member can be appropriately changed. Utility poles include power poles and telecommunication poles. The use of the arm band of the present invention is not particularly limited, and in addition to those for installing electric wires and cables, it may also be for attaching antennas, road signs, etc.

Explanation of Reference Numerals

[0018] 1. Arm body 2. Bird intrusion prevention components 3. Slit (locking part) 4. Locking part

Claims

[Claim 1] A cross arm comprising a cross arm body and a bird intrusion prevention member, wherein the cross arm body is formed from an aluminum profile, and the bird intrusion prevention member is inserted into the hollow part from the end of the cross arm body and fixed to the cross arm body by crimping from the surrounding area.

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