JP2018173103A - Presser for suspension device for catv apparatus, and suspension device for catv apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a presser which prevents a bolt from being damaged and also facilitates application to an existing CATV apparatus, and a suspension device.SOLUTION: A presser comprises two or more pressing parts having different sizes and/or shapes and two or more support projections having different protruding lengths. Each of the two or more pressing parts is in a one-to-one relationship with any one of the two or more support projections. Each of the pressing parts includes a wire accommodation part. Each of the support projections protrudes closer to a wire accommodation part of a pressing part in the one-to-one relationship. The protruding length of the support projection is set to such a length that, when a messenger wire is pressed by the pressing part in the one-to-one relationship, the support projection is abutted on a pedestal and can hold the presser in a horizontal or substantially horizontal state. A suspension device is provided for a messenger wire of a CATV apparatus and comprises the presser as a presser.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a presser for a suspension device for a CATV device (hereinafter simply referred to as “presser”) used to suspend a CATV device such as a trunk amplifier and a trunk branch switch used in a CATV system to a messenger wire, and the presser. The present invention relates to a suspension device for CATV equipment (hereinafter simply referred to as “suspension device”) provided with a tool.

  There are various types of CATV devices, and some of them are suspended from a messenger wire M as shown in FIG. In this type of CATV equipment, as shown in FIG. 9A, a suspension device B is formed on the outer upper surface of the casing A. The suspension device B has a V-groove D formed on the upper surface of a cradle C formed on the upper surface of the casing A, and a L-shaped presser E attached to the cradle C with a bolt F. The horizontal plate G of the tool E is placed on the V groove D. In order to suspend this CATV device on the messenger wire M, the messenger wire M is disposed between the V groove D and the curved portion H of the lateral plate G, and in this state, the bolt F is tightened and the presser E is pushed down. The messenger wire M was held between the V groove D and the curved portion H.

  However, in the conventional suspension apparatus B for CATV equipment, the pressing tool E is inclined and the pressing angle changes depending on the diameter of the messenger wire M. For example, as shown in FIG. 9B, when the diameter of the messenger wire M is too small as compared with the V groove D, when the bolt F is tightened, the tip of the presser E is lowered forward. In this case, there is a space between the head of the bolt F and the presser E, and the tightening of the messenger wire M is insufficient, or if it is tightened strongly, the presser E acts as a hook on the bolt F, and the bolt F may be curved as indicated by phantom lines in FIG. If it curves in this way, it will become difficult to rotate the volt | bolt F, and removal will become troublesome, and the screw thread of the volt | bolt F might be damaged or the volt | bolt F might be broken.

  9C, if the diameter of the messenger wire M is too large compared to the V-groove D, when the bolt F is tightened, the tip of the presser E rises forward, and the presser E is The messenger wire M fits in the V-groove D only slightly. For this reason, if the clamping of the messenger wire M becomes unstable or if it is tightened strongly, the presser E acts as a hook against the bolt F, and the bolt F is bent as shown by the phantom line in FIG. May end up. Even when curved in this way, the bolt F becomes difficult to rotate, and the removal becomes troublesome, and sometimes the screw thread of the bolt F is broken or the bolt F is broken.

  In order to solve the above-described problems, the applicant of the present application forms a vertical hole and a locking hole in the pedestal, and the bolt inserted into the vertical hole is a piece screw that is rotatably set in the locking hole. A suspension system has been developed that prevents bending or breakage of a bolt, breakage of a screw thread, or the like by screwing into a hole (Patent Document 1).

Japanese Patent Laid-Open No. 9-273509

  According to the suspension device described in Patent Document 1, the above-described various problems can be solved. However, since it is necessary to provide a screw hole for inserting a piece into a cradle, the suspension device is applicable to existing CATV equipment. There is a difficulty that you can not.

  The object of the present invention is to securely tighten the messenger wire to the casing of the CATV device regardless of the diameter of the messenger wire, and to prevent the bolt from being bent or damaged, Another object of the present invention is to provide a pressing tool that can also be applied and a suspension device including the pressing tool.

[Presser]
The presser of the present invention is a suspension device that can hang a CATV device on the messenger wire by sandwiching the messenger wire between the CATV device cradle and the presser and fixing the presser to the cradle with the fixture. 2 or more pressing parts having different sizes or / and shapes, and two or more supporting protrusions having different projecting lengths, each of the two or more pressing parts being one of the two or more supporting protrusions. There is a one-to-one relationship with any one, each holding portion includes a wire receiving portion in which a messenger wire is accommodated, and each of the supporting protrusions protrudes to the wire receiving portion side of the holding portion in a one-to-one relationship, The protrusion length of the support protrusion is such that when the messenger wire is pressed by a pressing portion having a one-to-one relationship, the pressing tool is placed horizontally or substantially The messenger wire having a predetermined outer diameter can be pressed by using an arbitrary pressing portion selected from the two or more pressing portions, which is different from the arbitrary pressing portion. By using a pressing portion, the messenger wire having a predetermined outer diameter can be used to press another messenger wire having a different outer diameter.

[Suspension device]
The suspension device of the present invention is a suspension device in which a CATV device can be suspended from the messenger wire by sandwiching a messenger wire between a cradle of a CATV device and a presser and fixing the presser to the cradle with a fixture. And the said holding tool of this invention is provided as a pressing tool. The CATV device can be suspended from the messenger wire by fixing the pressing tool holding the messenger wire to the cradle with a fixing tool.

[Presser]
The presser of the present invention has the following effects.
(1) Since two or more pressing parts having different sizes or / and shapes are provided, one pressing tool can handle two or more types of messenger wires having different outer diameters.
(2) Since the pressing tool is attached to the outside of the messenger wire and can be suspended from the messenger wire simply by fixing the pressing tool to the receiving base with a bolt, the suspending operation can be easily performed.
(3) Since it is not necessary to perform a process such as making a hole in a cradle provided in the casing of the CATV device, it can be easily applied to an existing CATV device.
(4) When the support protrusion is provided, since the presser is supported in a horizontal or substantially horizontal state by the support protrusion when the messenger wire is pressed, the bending or breakage of the bolt due to the tilt of the presser is prevented. be able to.

[Suspension device]
The suspension device of the present invention has the following effects.
(1) Since two or more pressing parts having different sizes or / and shapes are provided, one pressing tool can handle two or more types of messenger wires having different outer diameters.
(2) Since the pressing tool is attached to the outside of the messenger wire and can be suspended from the messenger wire simply by fixing the pressing tool to the receiving base with a bolt, the suspending operation can be easily performed.
(3) When the support protrusion is provided, the presser is supported in a horizontal or substantially horizontal state by the support protrusion when the messenger wire is pressed, so that the bolt can be prevented from being bent or broken due to the tilt of the presser. be able to.

(A) is a perspective view which shows the state before pressing down a small diameter messenger wire with the suspension apparatus of this invention, (b) is a perspective view which shows the state before pressing down a large diameter messenger wire for the CATV apparatus of this invention. . (A) is a side view when the wire receiving portion of the smaller pressing portion is directed downward, and (b) is a side view when the wire receiving portion of the larger pressing portion is directed downward. (A)-(c) is a procedure explanatory drawing in the case of pressing a messenger wire with the smaller pressing part. (A)-(c) is a procedure explanatory drawing in the case of pressing a messenger wire with a larger pressing part. (A) is a side view when the wire receiving part of the smaller pressing part among the pressing parts provided with the V-shaped wire receiving part is directed downward, and (b) is the V-shaped wire receiving part. The side view at the time of the wire holding part of the larger holding | suppressing part among the holding | suppressing parts provided facing downward, (c) is standing up the wall board of a set of 2 sheets on the flat plate without a recessed part, and the wall The side view at the time of making a wire accommodation part between board | substrates. The side view of the pressing tool provided with three pairs of pressing parts and support protrusions. (A) is a side view when a pressing part protrudes only on one surface side of the base material and a support protrusion protrudes only on the other surface side of the base material, and (b) is a smaller side of the pressing tool shown in (a). The side view which shows the state which pressed the messenger wire with the holding | suppressing part, and (c) is a side view which shows the state which pressed the messenger wire with the larger pressing part of the pressing tool shown to (a). The perspective view which shows the state which suspended the suspension apparatus of the conventional CATV apparatus on the messenger wire. The conventional CATV apparatus suspension apparatus is shown, (a)-(c) is a longitudinal cross-sectional view which shows the attachment state in case the diameter of a messenger wire differs.

(Embodiment 1)
An example of the pressing tool 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 2 on the CATV device side is referred to as the lower side, and the opposite surface is referred to as the upper side.

  As an example, the suspension device 10 shown in FIGS. 1A and 1B includes a cradle 1 that is addressed to the lower side of the messenger wire M, a presser 2 that is addressed to the upper side of the messenger wire M, and the presser. A bolt 3 (fixing tool) for fixing the receiving base 1 is provided. The cradle 1 is provided on the upper surface of the casing of a CATV device (not shown).

  The pressing tool 2 shown in FIGS. 2A and 2B includes two pressing portions 4 having the same shape and different sizes on a single base material. The holding | suppressing part 4 can be formed by curving a base material, for example by a bending process. The smaller pressing portion (referred to as “small diameter pressing portion” in this application) 4a protrudes above the base material, and the larger pressing portion (referred to as “large diameter pressing portion” in this application) 4b protrudes below the base material. Yes. On the opposite side of the protruding portions of both pressing portions 4, a wire receiving portion 5 in which the messenger wire M is received is formed. In this embodiment, the wire receiving portion 5 is a concave groove having an arcuate sectional view. The wire receiving portion 5 in which the messenger wire M is accommodated can be more securely fixed to the messenger wire M and suspended by matching the outer shape of the messenger wire M.

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. Moreover, the wire fitting part 5 (for M1) holding the small diameter wire M1 may not be the minimum diameter. Further, the wire fitting portion 5 (for M2) that holds the thick wire M2 may not have the maximum diameter. (It suffices to be within the range of the above-mentioned small diameter to large diameter.)

  The presser 2 includes two support protrusions 6 having different protrusion lengths. The support protrusion 6 is for holding the pressing tool 2 that holds the messenger wire M horizontally or substantially horizontally. The shorter support protrusion (hereinafter referred to as “short support protrusion”) 6a has a one-to-one relationship with the small diameter pressing portion 4a, and is used when pressing the messenger wire M (thin diameter wire M1) with the small diameter pressing portion 4a. The The short support protrusion 6a of this embodiment is composed of two pieces formed by bending two portions of the base material downward. There may be more or less pieces of the short support protrusion 6a than two pieces. The length (protrusion length) of the short support protrusion 6a is such that the pressing tool 2 can be held in a horizontal or substantially horizontal state by contacting the cradle 1 when the small-diameter pressing portion 4a presses the small-diameter wire M1. It is as.

  The longer support protrusion (referred to as “long support protrusion” in this application) 6b has a one-to-one relationship with the large-diameter pressing portion 4b, and when the messenger wire M (thick diameter wire M2) is pressed by the large-diameter pressing portion 4b. Used. The long support protrusion 6b of this embodiment is formed of one piece formed by bending a part of the base material upward. The long support protrusion 6b can be formed of two or more pieces. The length of the long support protrusion 6b (protrusion length) is such that when the large-diameter pressing portion 4b presses the large-diameter wire M2, it can contact the cradle 1 and hold the pressing tool 2 in a horizontal or substantially horizontal state. As it is.

  An insertion hole 7 (FIGS. 1A and 1B) for inserting a bolt 3 for fixing the pressing tool 2 is formed in the base material of the pressing tool 2. The insertion hole 7 is a long and narrow hole in the lateral direction (width direction) of the presser 2. By making it a long hole, even if the presser 2 holding the messenger wire M is slightly inclined, no external force is applied to the bolt 3 within the range of the insertion hole 7 and it will not be bent or broken carelessly. .

  The pressing tool 2 of this embodiment can selectively use any pressing part 4 according to the outer diameter of the messenger wire M. For example, when the messenger wire M is a thin wire M1 as shown in FIGS. 3A to 3C, the V-groove 1a of the cradle 1 is placed below the thin wire M1 (FIG. 3A). ), The concave groove of the small diameter pressing portion 4a is directed to the upper side of the thin wire M1 (FIG. 3B), and the bolt 3 is inserted into the insertion hole 7 from the upper side, and the bolt 3 is provided on the receiving base 1. By screwing into the screw hole 1b (FIG. 3C), the thin wire M1 can be clamped between the cradle 1 and the pressing tool 2 (small diameter pressing 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 placed below the large-diameter wire M2 (FIG. 4A). ), The concave groove of the large-diameter pressing portion 4b is directed 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 receiving base 1 By screwing into the formed screw hole 1b (FIG. 4C), the large-diameter wire M2 can be clamped between the cradle 1 and the pressing tool 2 (large-diameter pressing portion 4b).

(Embodiment 2)
In the first embodiment, the case where the wire receiving portion 5 of the pressing portion 4 is a concave groove having a cross-sectional arc shape is taken as an example. However, the concave groove of the pressing portion 4 may have another shape. FIGS. 5A and 5B are examples in the case where 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 example of FIGS. 5A and 5B, the inner angles of the recessed grooves of the two pressing portions 4 are the same angle, but the inner angles of the recessed grooves may be different angles.

  Similar to the first embodiment, the length (projection length) of the short support protrusion 6a is such that when the messenger wire M (small diameter wire M1) is pressed by the small diameter pressing portion 4a, the pressing tool 2 is brought into contact with the cradle 1. The length can be held in a horizontal or substantially horizontal state. Further, the length (protrusion length) of the long support protrusion 6b is set so that the pressing tool 2 is horizontal or substantially abutted against the cradle 1 when the messenger wire M (large diameter wire M2) is pressed by the large diameter pressing portion 4b. The length can be held in a horizontal state.

  In the example shown in FIGS. 1A, 1B, 5A, and 5B, the case where the wire receiving portion 5 is a concave groove is described as an example, but the wire receiving portion 5 is not a concave groove. Also good. For example, as shown in FIG. 5C, two or more sets of two wall plates 8 facing each other with a space on a flat plate without a recess are erected, and a wire is provided between the facing wall plates 8. It can also be set as the fitting part 5. Further, the wall plate 8 can be erected at an angle so that the front end side becomes wider or the front end side becomes narrower.

(Embodiment 3)
The pressing tool 2 of the first and second embodiments is provided with two pairs of the pressing portion 4 and the supporting projection 6, but three or more pairs of the pressing portion 4 and the supporting projection 6 can be provided. FIG. 6 shows an example in which three pairs of pressing parts 4 and support protrusions 6 are provided. The three pressing portions 4 have the same shape and different sizes. The protrusion lengths of the three support protrusions 3 are different lengths. In the example of FIG. 6, the depressions and projections of the pressing portion 4 protrude alternately on the front and back of the substrate. Similarly, the support protrusions 6 protrude alternately on the front and back of the substrate. In FIG. 6, the left pressing portion 4 (small diameter pressing portion 4a) and the left supporting projection 6a, the right pressing portion 4 (large diameter pressing portion 4b) and the right supporting projection 6b, the middle pressing portion 4 (medium diameter pressing). The portion 4c) and the middle support protrusion 6c are in a one-to-one relationship.

  The length (protrusion length) of the left support protrusion 6a is such that when the messenger wire M (thin diameter wire M1) is pressed by the small diameter pressing portion 4a, the pressing tool 2 is brought into contact with the cradle 1 horizontally or substantially horizontally. It is the length that can be maintained in the state. The length (protrusion length) of the right support protrusion 6b is such that when the messenger wire M (large diameter wire M2) is pressed by the large diameter pressing portion 4b, it comes into contact with the cradle 1 and makes the pressing tool 2 horizontal or substantially horizontal. It is the length that can be maintained in the state. The length (protrusion length) of the middle support protrusion 6c is such that 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, the support tool 6c comes into contact with the cradle 1. The length can be held in a horizontal or substantially horizontal state.

  In the example of FIG. 6, the depressions and projections of the pressing part 4 protrude alternately on both surfaces of the base material, but the depressions and protrusions of the pressing part 4 do not need to protrude alternately. Similarly, in the example of FIG. 6, the support protrusions 6 protrude alternately on both surfaces of the base material, but the support protrusions 6 do not need to protrude alternately.

(Embodiment 4)
In the first to third embodiments, the case where the pressing portion 4 and the support protrusion 6 protrude on 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 on one surface side of the base material. It is also possible to project the support protrusion 6 only on the other surface side of the substrate.

  FIGS. 7A to 7C show examples in which the pressing portion 4 is protruded only on the upper side surface of the substrate and the support protrusion 6 is protruded only on the lower side surface. In this example, when the small-diameter pressing portion 4a is used to hold the thin wire M1, the long-supporting protrusion 6b is shown in FIG. 7 (b), it is provided at a position that protrudes outward in the width direction of the cradle 1 when the messenger wire M is pressed by the small diameter pressing portion 4a.

  When the messenger wire M is a thin wire M1 as shown in FIG. 7B, the V-groove 1a of the cradle 1 is directed to the lower side of the thin wire M1, and the concave groove of the small-diameter pressing portion 4a is formed in the thin wire M1. The bolt 3 is inserted into the insertion hole 7 from the upper side of the diameter wire M1, and the bolt 3 is screwed into the screw hole 1b provided in the pedestal 1 so that the small diameter wire M1 is pressed against the pedestal 1. It can be held between the tools 2.

  On the other hand, when the messenger wire M is a large-diameter wire M2 as shown in FIG. 7C, the V-groove 1a of the cradle 1 is placed below the large-diameter wire M2, and the concave groove of the large-diameter pressing portion 4b. Is attached to the upper side of the large-diameter wire M2, the 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 cradle 1, whereby the diameter wire M2 is received. 1 and the presser 2 can be clamped.

(Other embodiments)
The configurations shown in Embodiments 1 to 4 can be combined as appropriate. For example, of the two or more pressing portions 4, one groove may have a cross-sectional arc shape as in the first embodiment, and the other one groove may have a V-shaped cross section as in the second embodiment. it can.

  The presser 2 of the present invention can be used for attaching a CATV device that is newly suspended, or can be used in place of the presser of an existing CATV device that is hung on the messenger wire M.

1 cradle 1a V groove 1b screw hole 2 presser 3 bolt (fixing tool)
4 Holding part 4a Small diameter pressing part 4b Large diameter pressing part 4c Medium diameter pressing part 5 Wire receiving 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 Receiving base D V groove E Presser F Bolt G Horizontal plate H Curved part M Messenger wire M1 Small diameter wire M2 Large diameter wire M3 Medium diameter wire

Claims (2)

In a retainer for a suspension device for CATV equipment, the messenger wire is sandwiched between a cradle and a presser of a CATV device and the CATV device can be suspended from the messenger wire by fixing the presser to the cradle with a fixture. ,
Comprising two or more holding parts having different sizes or / and shapes, and two or more supporting protrusions having different protruding lengths,
Each of the two or more pressing portions has a one-to-one relationship with any one of the two or more support protrusions,
Each of the holding portions includes a wire receiving portion for receiving a messenger wire,
Each of the support protrusions protrudes toward the wire receiving portion side of the pressing portion in a one-to-one relationship,
The protrusion length of the support protrusion is a length that can hold the pressing tool in a horizontal or substantially horizontal state by abutting against the cradle when pressing the messenger wire with a pressing portion having a one-to-one relationship.
A messenger wire having a predetermined outer diameter can be pressed by using an arbitrary pressing portion selected from the two or more pressing portions, and the predetermined outer diameter can be pressed by using a pressing portion different from the arbitrary pressing portion. Can hold other messenger wires with different outer diameters from messenger wires,
A retainer for a suspension device for CATV equipment. In the suspension apparatus for CATV equipment, the messenger wire can be suspended from the messenger wire by sandwiching the messenger wire between the cradle of the CATV equipment and the presser and fixing the presser to the cradle with the fixture.
The presser is a presser of the suspension device for CATV equipment according to claim 1,
The CATV device can be suspended from the messenger wire by fixing the presser that holds the messenger wire to the cradle with the fixture.
A suspension device for CATV equipment.

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