JPH062425Y2 - Universal messenger-restraint - Google Patents

Description

[Detailed Description of the Invention] (Technical field) The present invention relates to a messenger wire retaining metal fitting for coaxial cable wiring, which is a feeder for joint listening of television or FM broadcasting used in, for example, an apartment house in a residential park. is there.

In such an apartment house or the like, there is a radio interference due to the proximity of a building, or because of the interference of received radio waves due to the presence of power transmission lines, antenna equipment for joint listening is required for reception of television or FM broadcasting. In such a facility, a reception radio wave is supplied by a coaxial cable to each building and each floor from a common reception antenna provided on the roof.

The present invention relates to a straining fitting for stretching a messenger wire for stretching a coaxial cable for such a purpose.

(Prior art) In public housing, etc., construction is generally carried out by the internal regulation construction method, but it is not allowed to drive anchor bolts into buildings, so U-shaped steel suitable for vertical or horizontal slabs such as rooftops. It is fastened with bolts to the backing plate and fixed, and wiring is performed using wiring hardware designed so as not to damage the building. 9 to 12
The figure shows an example of such a known hardware.

Of these, those shown in FIGS. 9 and 10 are fixed types, and each one is required for the slab S having a specific thickness. Since the thickness of the slab of the building varies from one to the other, this type has a drawback that it is troublesome to prepare a large number of sizes or to perform welding manufacturing on site.

The ones shown in FIGS. 11 and 12 are L indicated by L ₁ and L _2.
Cut a vertically long groove in a V shaped steel and tighten it with fixing bolts.
It is possible to adjust according to the size of the slab thickness. However, such an adjustable type has a drawback in that the force of the joint portion is weak and a desired tightening force and strength cannot be obtained.

(Purpose of the Invention) In view of the above-mentioned circumstances, the present invention provides a lightweight and solid messenger wire retracting metal fitting which can be freely adjusted to various thicknesses of a slab to be attached and has a cross-sectional shape. Its purpose is to provide.

Embodiments The present invention will be described below with reference to the drawings.

1 to 7 show a first embodiment of the present invention, which is a retractable metal fitting suitable for mounting on an eaves-shaped horizontal slab of a building.

In each of these figures, reference numeral 1 denotes a body of a messenger detention fitting, and an upper side 1'of the messenger detention fitting is an integral staying pole, and a cross section is provided in a central portion as shown in FIG. 5 for imparting strength. It is made from shaped steel with a U-shape.

At the lower end of the main body 1, a fixing seat 2 having a side surface shaped like a so-called inverted monkey wrench head is welded, and a horizontal holding surface 3 is provided on the fixing seat 2. Therefore, when the fixed seat 2 is viewed from the front, it has a downward U-shape and maintains its strength. This holding surface 3 is a portion to be brought into contact with the lower surface of the horizontal slab of the building.

The main body 1 is provided with several holes 4, 4 ', 4 "for positioning the bracket arm 5. The bracket arm 5 has a reinforced U-shaped cross section of the main body 1 when its base is viewed from above (the fifth
(Fig.), The outer side of the main body 1 is just surrounded in the opposite direction, and when the inner surface of the back portion 6 abuts the U-shaped end portion of the main body 1, the reinforcing strut 7 contacts the U-shaped top surface of the main body 1. I will make contact with you.

A bolt 8 for fixing a position can be attached to a central hole of the rear surface 6 of the bracket arm 5, and the bolt 8 can be fixed and removed by a nut 8'fixed to the surface opposite to the rear surface 6. .

The use condition of the present invention retaining metal fitting will be described below.

In FIG. 1, S, which is shown in a schematic cross section, is a slab corresponding to the eaves of a concrete structure. This slab S has different thickness depending on the building. With the body 1 fitted to the bracket arm 5, the position fixing bolts 8 are removed or removed from the holes 4 and 4 ′ of the body. You can move up and down freely. Therefore, one of the appropriate positioning holes 4, 4 ', 4 "is selected at a position corresponding to the thickness of the slab S, and the bolt 8 for fixing the position is screwed and fixed to the nut 8' so that the position fixing bolt 8 is inserted therethrough. In this state, tighten the tightening bolts 9, 9 ', 9 "toward the slab S,
It is fixed with fixing nuts 10 and 11, etc. Reference numeral 12 is a backing plate used as necessary.

Thus, the slab S is firmly fastened between the holding surface 3 of the fixed seat 2 of the main body 1 and the fastening bolts 9 and 9'of the bracket arm 5 via the contact plate 12, and the bracket arm 5 is secured.
Is made firm by the contact between the reinforcing column 7 and the surface of the main body 1, the engagement of the inner surface of the back surface portion 6 with the end of the main body 1 and the engagement of the position fixing bolt 8 with the positioning holes 4, 4 '. That position is retained.

A messenger fixing hole 13, 13 ', 13 "or the like is provided in the center of the stay column 1'integrated on the upper side of the main body 1, and a messenger wire (not shown) is stretched by this.

According to the present invention, it can be freely mounted and used by simply changing the engagement between the bolt 8 and the holes 4, 4 ', 4 ", etc. for various slab thicknesses. In comparison, a sufficient strength can be obtained.

FIG. 8 shows a modified example of the retractable metal fitting of the present invention which can be used for the vertical slab S. In this example, the main body 1 is placed sideways, and the same bracket arm 5 as in the first example is mounted, but the fixed seat 2 is formed by welding the retention column 1'also serving as the fixed seat.

This modification also has the same advantages as the first embodiment.

In the present invention, since the fastening bolts provided on the surface of the bracket arm 5 facing the fixed seat are arranged in a triangular shape as shown in FIG. 3, the outer bolt 9 resists disengagement, so there is little risk of falling off. It is also effective in preventing accidents.

Further, in the fastening and mounting work, the fastening is a one-side operation that can be performed from one direction, and the work is easy.

The present invention has the advantage that it is extremely stronger than the weight by devising the cross section of each type of steel.

[Brief description of drawings]

1 to 7 show a first embodiment of the present invention, FIG. 1 is a side view showing a cross section of a slab, FIG. 2 is a front view, FIG. 3 is a plan view, and FIG. 4 is a rear view. 5 is a sectional view showing the main body at a slightly larger scale, FIG. 6 is a perspective view, and FIG. 7 is a perspective view of a bracket arm. FIG. 8 is a side view of a second embodiment of the present invention, FIGS. 9 to 12 are schematic views of a known example, FIGS. 9 and 10 show a fixed type, and FIGS. [Fig. 3] is a diagram showing an adjustable type. DESCRIPTION OF SYMBOLS 1 ... Main body 1 '... Storing column 2 ... Fixing seat 3 ... Holding surface 4, 4', 4 "... Positioning hole 5 ... Bracket arm 7 ... Reinforcing support 8 ... Position fixing bolts 9, 9 ', 9" ... Fastening bolts 13, 13 ', 13 "... Messenger retention holes

Claims (3)

[Scope of utility model registration request] 1. A holding member having a main body (1) made of a U-shaped section steel whose cross section has a recess in the central portion and welded to one end of the main body (1) so as to abut against a slab. Fixed seat (2) with face (3)
And a bracket arm (5) having a base portion having a shape surrounding the outside of the open end of the main body (1) in the opposite direction and having a reinforcing strut (7) in a shape facing the fixed seat (2). ) Is provided in combination with the main body (1), and the bracket arm is attached to the main body (1).
Providing multiple positioning holes (4, 4 ', 4 ") in (5), tighten the position fixing bolts (8) that engage the positioning holes in the bracket arm (5) and fix the position. The bracket arm (5) is mounted so that it can be fastened, and tightening bolts (9, 9 ′, 9 ″) that can be fastened and fixed are provided on the opposing surface of the fixed seat (2) of the bracket arm (5), and the main body (1) Is a connecting column (1 '),
Free type messenger anchor fittings with holes (13, 13 ', 13 ″) for messenger anchorage in (1 ′). 2. A universal messenger retaining bracket according to claim 1, wherein the retaining column (1 ') is integrated with the main body (1). 3. The universal messenger retaining bracket according to claim 1, wherein the retaining column (1 ') is welded to the main body (1) at a right angle and is integrated with the fixing seat (2).