JP6896482B2 - Suspension device for CATV equipment and suspension device for CATV equipment - Google Patents

Description

The present invention includes a holding tool for a suspension device for a CATV device (hereinafter, simply referred to as a "holding tool") used for suspending a CATV device such as a trunk line amplifier and a trunk line branching device used in a CATV system on a messenger wire. The present invention relates to a suspension device for CATV equipment equipped with a tool (hereinafter, simply referred to as a “suspension device”).

There are various types of CATV equipment, and among them, there is one that is hung on the messenger wire M as shown in FIG. As shown in FIG. 9A, a suspension device B is formed on the outer upper surface of the housing A of this type of CATV device. In this suspension device B, a V-groove D is formed on the upper surface of a pedestal C formed on the upper surface of the housing A, and a side-shaped L-shaped pressing tool E is attached on the pedestal C by a bolt F to hold the suspension device B. The horizontal plate G of the tool E covers the V groove D. In order to suspend the CATV device from the messenger wire M, the messenger wire M is arranged between the V groove D and the curved portion H of the horizontal plate G, and in that state, the bolt F is tightened to push down the holding tool E. , The messenger wire M was sandwiched and held between the V groove D and the curved portion H.

However, in the suspension device B of the conventional CATV device, the pressing tool E is tilted and the pressing angle thereof changes depending on the size of the diameter of the messenger wire M. For example, as shown in FIG. 9B, if the diameter of the messenger wire M is too small as compared with the V groove D, the tip of the presser foot E will be lowered forward when the bolt F is tightened. In this case, a space is created between the head of the bolt F and the holding tool E, and the tightening of the messenger wire M becomes insufficient. F may be curved as shown by a virtual line in FIG. 9 (b). When the bolt F is curved in this way, the bolt F becomes difficult to rotate, it becomes troublesome to remove the bolt F, and sometimes the screw thread of the bolt F is damaged or the bolt F is broken.

Further, as shown in FIG. 9C, if the diameter of the messenger wire M is too large as compared with the V groove D, the tip of the holding tool E rises forward when the bolt F is tightened, and the holding tool E becomes raised. The messenger wire M comes to float, and the messenger wire M fits only slightly in the V groove D. For this reason, the pinching of the messenger wire M becomes unstable, or when the messenger wire M is tightened strongly, the holding tool E acts as a lever on the bolt F, and the bolt F is curved as shown by a virtual line in FIG. 9 (c). It may end up. Even when the bolt F is curved in this way, the bolt F becomes difficult to rotate, it becomes troublesome to remove the bolt F, and sometimes the screw thread of the bolt F is damaged or the bolt F is broken.

In order to solve the above-mentioned problems, the applicant has formed a vertical hole and a locking hole in the cradle, and the bolt inserted in the vertical hole is rotatably set in the locking hole. We have developed a suspension device that prevents the bolt from bending or breaking, or the screw thread from being damaged by screwing it into the hole (Patent Document 1).

Japanese Unexamined Patent Publication No. 9-273509

According to the suspension device described in Patent Document 1, the various problems can be solved, but since it is necessary to provide a screw hole for inserting a piece in the cradle, it is applicable to existing CATV equipment. There is a drawback that it cannot be done.

An object of the present invention is that the messenger wire can be securely tightened to the housing of the CATV device regardless of the diameter of the messenger wire, and the bolt is not bent or damaged, and the existing CATV device can be used. It is an object of the present invention to provide a presser foot that can also be applied and a suspension device provided with the presser foot.

[Holder]
The presser foot of the present invention is a suspension device capable of suspending a CATV device on the messenger wire by sandwiching a messenger wire between a pedestal of a CATV device and a presser foot and fixing the presser foot to the cradle with a fixture. The holding tool is provided with two or more holding portions having different sizes and / and shapes, and two or more supporting protrusions having different protrusion lengths, and each of the two or more holding portions is of the two or more supporting protrusions. Each of the holding portions has a one-to-one relationship with any one of them, and each of the holding portions is provided with a wire fitting portion in which the messenger wire is accommodated. The protruding length of the support protrusion is a length that can abut the messenger wire when the messenger wire is pressed by the pressing portion having a one-to-one relationship and hold the pressing tool in a horizontal or substantially horizontal state. A messenger wire having a predetermined outer diameter can be pressed by using an arbitrary pressing portion selected from the pressing portions of the above, and a messenger wire having a predetermined outer diameter can be pressed by using a pressing portion different from the arbitrary pressing portion. Is configured to hold other messenger wires with different outer diameters.

[Suspension device]
The suspension device of the present invention is a suspension device capable of suspending a CATV device on the messenger wire by sandwiching a messenger wire between a cradle and a holding tool of the CATV device and fixing the holding tool to the cradle with a fixing tool. The presser is provided with the presser of the present invention. By fixing the holding tool that holds the messenger wire to the cradle with the fixing tool, the CATV device can be hung from the messenger wire.

[Holder]
The presser foot of the present invention has the following effects.
(1) Since two or more pressing portions having different sizes and / and shapes are provided, one pressing tool can handle two or more types of messenger wires having different outer diameters.
(2) Since the holding tool can be hung on the messenger wire simply by placing the holding tool on the outside of the messenger wire and fixing the holding tool to the cradle with bolts, the hanging work can be easily performed.
(3) Since it is not necessary to make a hole in the cradle provided in the housing of the CATV device, it can be easily applied to the existing CATV device.
(4) When the support protrusion is provided, the holder is supported in a horizontal or substantially horizontal state by the support protrusion when the messenger wire is pressed, so that the bolt is prevented from bending or breaking due to the tilt of the holder. be able to.

[Suspension device]
The suspension device of the present invention has the following effects.
(1) Since two or more pressing portions having different sizes and / and shapes are provided, one pressing tool can handle two or more types of messenger wires having different outer diameters.
(2) Since the holding tool can be hung on the messenger wire simply by placing the holding tool on the outside of the messenger wire and fixing the holding tool to the cradle with bolts, the hanging work can be easily performed.
(3) When the support protrusion is provided, the holder is supported in a horizontal or substantially horizontal state by the support protrusion when the messenger wire is pressed, so that the bolt is prevented from bending or breaking due to the tilt of the holder. be able to.

(A) is a perspective view showing a state before pressing a small-diameter messenger wire with the suspension device of the present invention, and (b) is a perspective view showing a state before pressing a large-diameter messenger wire for a CATV device of the present invention. .. (A) is a side view when the wire fitting portion of the smaller holding portion is directed downward, and (b) is a side view when the wire fitting portion of the larger holding portion is directed downward. (A) to (c) are explanatory views of the procedure when the messenger wire is pressed by the smaller pressing portion. (A) to (c) are explanatory views of the procedure when the messenger wire is pressed by the larger pressing portion. (A) is a side view when the wire fitting portion of the smaller holding portion of the holding portion provided with the V-shaped wire fitting portion is directed downward, and (b) is a V-shaped wire fitting portion. A side view of the provided holding part when the wire fitting part of the larger holding part is directed downward, (c) is a wall in which a pair of wall plates is erected on a flat plate without a recess. A side view when a wire fitting portion is used between the plates. A side view of a holding tool having three pairs of holding parts and support protrusions. (A) is a side view when the pressing portion is projected only on one surface side of the base material and the supporting projection is projected only on the other surface side of the base material, and (b) is the smaller side of the pressing tool shown in (a). A side view showing a state in which the messenger wire is held by the holding portion of the above, (c) is a side view showing a state in which the messenger wire is held by the larger holding portion of the holding tool shown in (a). A perspective view showing a state in which a suspension device of a conventional CATV device is suspended from a messenger wire. A suspension device for a conventional CATV device is shown, and FIGS. (A) to (C) are vertical cross-sectional views showing a mounting state when the diameters of the messenger wires are different.

(Embodiment 1)
An example of the holding device and the suspension device of the present invention will be described with reference to the drawings. The suspension device 10 of the present invention is used to suspend a CATV device on a messenger wire M. For convenience of explanation, in the following, the surface of the presser foot 2 on the CATV device side is referred to as the lower side, and the surface on the opposite side is referred to as the upper side.

As an example, the suspension device 10 shown in FIGS. 1 (a) and 1 (b) includes a cradle 1 addressed to the lower side of the messenger wire M, a holding tool 2 addressed to the upper side of the messenger wire M, and the holding tool. It is provided with a bolt 3 (fixing tool) for fixing to the cradle 1. The cradle 1 is provided on the upper surface of the housing of the CATV device (not shown).

The presser foot 2 shown in FIGS. 2A and 2B includes two presser portions 4 having the same shape but different sizes on a single base material. The pressing portion 4 can be formed by bending the base material by, for example, bending. The smaller pressing portion (referred to as "small diameter pressing portion" in the present application) 4a protrudes upward from the base material, and the larger pressing portion (referred to as "large diameter pressing portion" in the present application) 4b protrudes downward from the base material. There is. A wire fitting portion 5 in which the messenger wire M is accommodated is formed on the opposite side of the protruding portion of both holding portions 4. In this embodiment, the wire fitting portion 5 is formed as a concave groove having an arc-shaped cross section. By matching the wire fitting portion 5 in which the messenger wire M is accommodated to the outer peripheral shape of the messenger wire M, the CATV device can be more reliably fixed to the messenger wire M and suspended.

Diameter holding portion 4a is thin (e.g., cross-sectional area 18mm ² ~30mm ² about) (herein referred to as "small-diameter wires M1") messenger wire M of can be utilized to hold. Large径押Even section 4b, large diameter (e.g., cross-sectional area 38mm ² ~55mm ² about) (herein referred to as "large diameter wire M2") messenger wire M of can be utilized to hold. Further, the wire fitting portion 5 (for M1) that holds the small diameter wire M1 does not have to have the minimum diameter. Further, the wire fitting portion 5 (for M2) that holds the large diameter wire M2 does not have to have the maximum diameter. (It suffices if it is within the range of the above-mentioned small diameter to large diameter.)

The presser foot 2 includes two support protrusions 6 having different protrusion lengths. The support protrusion 6 is for holding the holding tool 2 that holds the messenger wire M horizontally or substantially horizontally. The shorter support protrusion (referred to as "short support protrusion" in the present application) 6a has a one-to-one relationship with the small diameter holding portion 4a, and is used when the messenger wire M (small diameter wire M1) is held by the small diameter holding portion 4a. To. The short support projection 6a of this embodiment is composed of two pieces formed by bending two places of the base material downward. The number of pieces constituting the short support protrusion 6a may be more or less than two pieces. The length (protruding length) of the short-sized support protrusion 6a is such that when the small-diameter wire M1 is pressed by the small-diameter pressing portion 4a, it comes into contact with the pedestal 1 and the pressing tool 2 can be held in a horizontal or substantially horizontal state. There is.

The longer support protrusion (referred to as "long support protrusion" in the present application) 6b has a one-to-one relationship with the large-diameter holding portion 4b, and when the messenger wire M (large-diameter wire M2) is held by the large-diameter holding portion 4b. It will be used. The long support projection 6b of this embodiment is composed of a piece formed by bending a part of the base material upward. The long support protrusion 6b may be composed of two or more pieces. The length (protruding length) of the long-sized support protrusion 6b is such that when the large-diameter wire M2 is pressed by the large-diameter pressing portion 4b, it comes into contact with the pedestal 1 and the pressing tool 2 can be held in a horizontal or substantially horizontal state. There is a wire.

An insertion hole 7 (FIGS. 1 (a) and 1 (b)) for inserting a bolt 3 for fixing the presser foot 2 is formed in the base material of the presser foot 2. The insertion hole 7 is an elongated hole in the lateral direction (width direction) of the holding tool 2. By making the hole long, even if the holding tool 2 holding the messenger wire M is slightly tilted, no external force is applied to the bolt 3 within the range of the insertion hole 7, and the bolt 3 is not inadvertently bent or damaged. ..

In the pressing tool 2 of this embodiment, any pressing portion 4 can be selectively used according to the outer diameter of the messenger wire M. For example, when the messenger wire M is a small diameter wire M1 as shown in FIGS. 3A to 3C, the V groove 1a of the cradle 1 is addressed to the lower side of the small diameter wire M1 (FIG. 3A). ), The concave groove of the small diameter holding portion 4a is addressed to the upper side of the small diameter wire M1 (FIG. 3B), the bolt 3 is inserted into the insertion hole 7 from the upper side, and the bolt 3 is provided on the cradle 1. By screwing into the screw hole 1b (FIG. 3C), the small diameter wire M1 can be sandwiched between the cradle 1 and the holding tool 2 (small diameter holding portion 4a).

On the other hand, when the messenger wire M is a large-diameter wire M2 as shown in FIGS. 4A to 4C, the V-groove 1a of the cradle 1 is addressed to the lower side of the large-diameter wire M2 (FIG. 4A). ), The concave groove of the large-diameter holding portion 4b is addressed to the upper side of the large-diameter wire M2 (FIG. 4B), the bolt 3 is inserted into the insertion hole 7 from the upper side, and the bolt 3 is provided on the cradle 1. By screwing into the screw hole 1b (FIG. 4 (c)), the large-diameter wire M2 can be sandwiched between the cradle 1 and the holding tool 2 (large-diameter holding portion 4b).

(Embodiment 2)
In the first embodiment, the case where the wire fitting portion 5 of the pressing portion 4 is a concave groove having an arc-shaped cross section is taken as an example, but the concave groove of the pressing portion 4 may have another shape. 5 (a) and 5 (b) are examples in which the concave groove of the pressing portion 4 is V-shaped. The two pressing portions 4 shown in FIGS. 5A and 5B have the same shape but different sizes. In the examples of FIGS. 5A and 5B, the internal angles of the concave grooves of the two pressing portions 4 are set to the same angle, but the internal angles of the concave grooves can be set to different angles.

Similar to the first embodiment, the length (protruding length) of the short support protrusion 6a comes into contact with the pedestal 1 when the messenger wire M (small diameter wire M1) is pressed by the small diameter pressing portion 4a, and the pressing tool 2 is pressed. It is a length that can be held horizontally or substantially horizontally. Further, the length (protruding length) of the long-sized support protrusion 6b is such that when the messenger wire M (thick-diameter wire M2) is pressed by the large-diameter pressing portion 4b, it comes into contact with the pedestal 1 to horizontally or omit the pressing tool 2. It is a length that can be held horizontally.

In the examples shown in FIGS. 1 (a) (b) to 5 (a) and (b), the case where the wire fitting portion 5 is a concave groove is described as an example, but the wire fitting portion 5 is not a concave groove. May be good. For example, as shown in FIG. 5C, two or more sets of two or more wall plates 8 facing each other at intervals are erected on a flat plate having no recess, and a wire is placed between the facing wall plates 8. It can also be a fitting portion 5. Further, the wall plate 8 can be erected at an angle so that the tip side becomes wider or the tip side becomes narrower.

(Embodiment 3)
The holding tool 2 of the first and second embodiments is provided with two pairs of holding portions 4 and supporting protrusions 6, but three or more pairs of holding portions 4 and supporting protrusions 6 may be provided. FIG. 6 shows an example in which three pairs of the pressing portion 4 and the supporting protrusion 6 are provided. The three pressing portions 4 have the same shape but different sizes. The protrusion lengths of the three support protrusions 3 are different lengths. In the example of FIG. 6, the unevenness of the pressing portion 4 is arranged so as to alternately project from the front and back surfaces of the base material. Similarly, the support projections 6 are also arranged to alternately project to the front and back surfaces of the base material. In FIG. 6, the left holding portion 4 (small diameter pressing portion 4a) and the left support protrusion 6a, the right pressing portion 4 (large diameter pressing portion 4b) and the right supporting protrusion 6b, and the middle pressing portion 4 (medium diameter pressing portion 4). The part 4c) and the support protrusion 6c in the center have a one-to-one relationship with each other.

The length (protruding length) of the support protrusion 6a on the left side abuts on the pedestal 1 when the messenger wire M (small diameter wire M1) is pressed by the small diameter pressing portion 4a, and the pressing tool 2 is horizontal or substantially horizontal. It is a length that can be held in a state. The length (protruding length) of the support protrusion 6b on the right side is such that when the messenger wire M (thick diameter wire M2) is pressed by the large-diameter pressing portion 4b, the support protrusion 6b abuts on the pedestal 1 to make the pressing tool 2 horizontal or substantially horizontal. It is a length that can be held in a state. The length (protruding length) of the support protrusion 6c in the center abuts on the pedestal 1 when the messenger wire M (referred to as "medium diameter wire M3" in the present application) is pressed by the medium diameter pressing portion 4c, and the pressing tool 2 is pressed. It is a length that can be held horizontally or substantially horizontally.

In the example of FIG. 6, the unevenness of the pressing portion 4 is made to protrude alternately on both surfaces of the base material, but the unevenness of the pressing portion 4 does not have to protrude alternately. Similarly, in the example of FIG. 6, the support protrusions 6 are arranged to project alternately on both sides of the base material, but the support protrusions 6 do not have to project alternately.

(Embodiment 4)
In the first to third embodiments, the case where the pressing portion 4 and the supporting protrusion 6 project to both the front surface side and the back surface side of the base material is taken as an example, but the pressing portion 4 protrudes only to one surface side of the base material. It is also possible to make the support projection 6 project only to the other surface side of the base material.

7 (a) to 7 (c) are examples of a case where the pressing portion 4 is projected only on the upper side surface of the base material and the support projection 6 is projected only on the lower side surface. In this example, when the small diameter wire M1 is pressed by the small diameter pressing portion 4a, the long supporting projection 6b is shown in the figure in order to prevent the long supporting protrusion 6b from coming into contact with the pedestal 1 and tilting the pressing tool 2. As shown in 7 (b), when the messenger wire M is pressed by the small diameter pressing portion 4a, the messenger wire M is provided at a position where it protrudes outward in the width direction of the cradle 1.

When the messenger wire M is a small-diameter wire M1 as shown in FIG. 7B, the V-groove 1a of the cradle 1 is addressed to the lower side of the small-diameter wire M1, and the concave groove of the small-diameter holding portion 4a is narrowed. By addressing the upper side of the diameter wire M1, inserting the bolt 3 into the insertion hole 7 from the upper side, and screwing the bolt 3 into the screw hole 1b provided in the receiving base 1, the small diameter wire M1 is pressed against the receiving base 1. It can be sandwiched between the tools 2.

On the other hand, when the messenger wire M is a large-diameter wire M2 as shown in FIG. 7 (c), the V-groove 1a of the cradle 1 is addressed to the lower side of the large-diameter wire M2, and the concave groove of the large-diameter holding portion 4b. Is addressed to the upper side of the large-diameter wire M2, a bolt 3 is inserted into the insertion hole 7 from the upper side, and the bolt 3 is screwed into the screw hole 1b provided in the receiving base 1 to receive the large-diameter wire M2. It can be sandwiched between 1 and the holding tool 2.

(Other embodiments)
The configurations shown in the first to fourth embodiments can be combined as appropriate. For example, of the two or more pressing portions 4, one concave groove may have a cross-sectional view arc shape as in the first embodiment, and the other one concave groove may have a cross-sectional view V shape as in the second embodiment. it can.

The presser foot 2 of the present invention can be used for attaching a newly suspended CATV device, and can also be used in place of the existing CATV device presser suspended on the messenger wire M.

1 Cradle 1a V groove 1b Screw hole 2 Holder 3 Bolt (fixing tool)
4 Holding part 4a Small diameter holding part 4b Large diameter holding part 4c Medium diameter holding part 5 Wire fitting part 6 Support protrusion 6a Short support protrusion 6b Long support protrusion 7 Insertion hole 8 Wall plate 10 Suspension device A Housing B Suspension device C Cradle DV groove E presser foot F bolt G horizontal plate H curved part M messenger wire M1 small diameter wire M2 large diameter wire M3 medium diameter wire

Claims (9)

In a CATV equipment suspension device holder capable of suspending a CATV device from the messenger wire by sandwiching the messenger wire between the cradle of the CATV device and the holding tool and fixing the holding tool to the pedestal with the fixing tool. ,
The presser foot is provided with two or more presser portions having different sizes and / and shapes, two or more support protrusions having different protrusion lengths, and an insertion hole through which the fixture is inserted .
Each of the two or more pressing portions has a one-to-one relationship with any one of the two or more supporting protrusions.
Each of the holding portions is provided with a wire fitting portion for accommodating the messenger wire.
Each of the two or more support protrusions protrudes toward the wire fitting portion of the holding portion having a one-to-one relationship.
The protruding length of the support protrusion is a length that can abut the messenger wire when the messenger wire is pressed by the pressing portion having a one-to-one relationship and hold the pressing tool in a horizontal or substantially horizontal state.
The two or more pressing portions may be selectively used in accordance with the outer diameter of the messenger wire, it is possible to suppress the messenger wire having a predetermined outer diameter by use of even parts press selected, pre Ki押even and parts Can press other messenger wires having an outer diameter different from that of the messenger wire having a predetermined outer diameter by selectively using different pressing portions.
A holding tool for a suspension device for CATV equipment. In the retainer of the suspension device for CATV equipment according to claim 1,
Two or more support protrusions have a long support protrusion with a long protrusion length and a short support protrusion with a shorter protrusion length, and both the long support protrusion and the short support protrusion or at least the long support protrusion are from the insertion hole. Also on the outside of the presser foot in the longitudinal direction,
A holding tool for a suspension device for CATV equipment. In the retainer of the suspension device for CATV equipment according to claim 1,
Two or more support protrusions have a long support protrusion with a long protrusion length and a short support protrusion with a shorter protrusion length, and the long support protrusion is outside the longitudinal direction of the presser foot than the short support protrusion.
A holding tool for a suspension device for CATV equipment. In the retainer of the suspension device for CATV equipment according to any one of claims 1 to 3.
Two or more wire fittings of two or more holding parts are on the front side and the back side of the holding tool, and each of the two or more support protrusions is on the same surface side as the wire fitting part of the holding part having a one-to-one relationship. It is in,
A holding tool for a suspension device for CATV equipment. In the retainer of the suspension device for CATV equipment according to any one of claims 1 to 3.
Two or more wire fittings of two or more holding parts and two or more support protrusions are on one or both of the front side and the back side of the holding tool.
A holding tool for a suspension device for CATV equipment. In the retainer of the suspension device for CATV equipment according to any one of claims 1 to 5.
The two or more wire fittings of the two or more holding portions are recessed grooves that are recessed on either one of the front surface side and the back surface side of the holding tool or on both surface sides, and the two or more supporting protrusions are one-to-one. It protrudes to the same surface side as the wire fitting part of the related holding part,
A holding tool for a suspension device for CATV equipment. In the retainer of the suspension device for CATV equipment according to any one of claims 1 to 5.
The wire fittings of the two or more holding portions are located between the wall plates protruding toward either one of the front surface side and the back surface side of the holding tool or both surface sides, and the two or more supporting protrusions are one-to-one. It protrudes to the same surface side as the wall plate that constitutes the wire fitting part of the related holding part.
A holding tool for a suspension device for CATV equipment. In the retainer of the suspension device for CATV equipment according to any one of claims 1 to 7.
The long support protrusion is provided at a position where it protrudes to the outside in the width direction of the cradle when the messenger wire is pressed by the small diameter retainer.
A holding tool for a suspension device for CATV equipment. In a suspension device for CATV equipment, in which the CATV device can be suspended from the messenger wire by sandwiching the messenger wire between the cradle and the holding tool of the CATV device and fixing the holding tool to the cradle with the fixing tool.
The presser foot is the presser foot of the suspension device for CATV equipment according to any one of claims 1 to 8.
The presser foot is placed on the messenger wire set in the receiving groove of the cradle, and the messenger wire is housed in the wire fitting portion of the presser portion selected from the two or more presser portions of the presser foot. By fixing the tool to the cradle with a fixing tool, the CATV device can be hung from the messenger wire.
Suspension device for CATV equipment.

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