JPS635262Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a casing of a public telephone, coin exchange machine, etc., for fixing the casing of a public telephone, coin exchange machine, etc. onto a mounting base so that it cannot be easily removed from the outside.

Public telephones, coin exchange machines, etc. are usually installed outdoors or in passageways where people can freely enter and exit.
In that case, it is necessary to firmly fix the housing of the telephone or the like on an immovable mount so that it cannot be easily removed from the outside and stolen.

In order to fix the casing on the mount, the casing is generally fixed to the mount by tightening the casing and the mount with bolts and nuts.
Specifically, for example, as shown in FIG.
The easiest installation method is to secure the welding nut 3 inside the mounting base 2 and screw the bolt 4 through the washer 5 from below the mounting base 2.
Since such a mounting method can be easily removed from the outside, it cannot be adopted from the standpoint of theft prevention.

Therefore, as shown in Fig. 2, the mounting base 2 is usually
A welding nut 3 is fixed to the lower surface of the casing 1, a bolt 4 is inserted from inside the casing 1 to be attached, and the bolt 4 is tightened from the inside of the casing 1 to fix it so that it cannot be easily removed.

However, when installing such a telephone, since various parts are assembled inside the already assembled telephone housing 1, the space for inserting and tightening the bolt 4 is narrow, especially the mounting base. It is often difficult to insert the bolt 4 correctly and vertically in line with the weld nut 3 on the bolt 2.

Therefore, the bolt 4 is inserted into the bolt hole at the bottom of the casing 1 in advance, and the bolt tip 11 is aligned with the weld nut 3 of the mounting base 2 and attached at the work site.

However, with this mounting method, when assembling, storing and transporting the phone, the tip 10 of the bolt 4 protrudes from the bottom of the casing 1, making it difficult to get caught or cause other accidents during transportation and installation work prior to installation. This can easily cause damage to the threads of the threaded portion 11 of the tip 10 of the bolt 4.
Further, there may be cases where the bolt 4 itself comes off from the bolt hole of the housing 1 and requires time and effort to reinsert.

The present invention does not cause such problems during installation work, always holds the bolt in the correct position, and furthermore, the tip of the bolt does not protrude outside the casing until installation work, making installation easy. To provide a housing mounting structure that can be screwed onto a receiving nut of a mounting base to facilitate tightening work in a narrow space.

That is, the present invention provides a bolt in which the shaft portion on the proximal end side of the threaded portion is formed to be thinner than the root diameter of the threaded portion, and a screw hole that is screwed into the threaded portion screwed into the casing. and a leg portion is fixed near the screw hole at the inner bottom of the casing, a bolt hole is screwed into the upper end portion to engage with the threaded portion of the bolt, and a screw hole is screwed between the bolt hole and the screw hole. a support body provided with a bolt tip storage space in which the length and diameter of the threaded portion are increased;
and a receiving nut that is screwed into the threaded part of the bolt and fixed to the support base. When installing the casing, the threaded part of the bolt is inserted into the threaded hole of the casing, and is then screwed into the receiving nut, so that the head of the bolt and the receiving nut are connected. This is a housing mounting structure characterized in that the mounting base is sandwiched between the housings.

The mounting structure of the casing of the present invention will be specifically described below with reference to the drawings, with reference to one embodiment thereof.

FIG. 4 is a vertical sectional view of the mounting structure of the casing 1 in the present invention in a state where the casing 1 is fixed to the mount 2, and FIG. FIG. 3 is a vertical cross-sectional view of the mounting structure.

The mounting structure of the casing of the present invention is to fix the bolt 12, the receiving nut 16, and the leg 6 to the bottom of the casing 1, screw the bolt hole 8 into the upper end 18, and store the bolt tip between them. Support body 9 provided with space 17 for
It basically consists of.

In FIG. 4, reference numeral 1 denotes a bolt having a threaded portion 11 screwed in the vicinity of the tip 10, and a shaft portion 13 on the proximal end side formed to be at least thinner than the root diameter of the threaded portion 11, and the tip of the bolt 12. Threaded part 1 near part 10
A receiving nut 16 is screwed into the nut 1. The washer 5 inserted through the bolt 12, the support 9, the housing 1, the mounting base 2, etc. are sandwiched between the head 15 of the bolt 12 and the receiving nut 16.

The leg portion 6 of the support body 9 is welded to a reinforcing plate 14 near the outer periphery of the screw hole 7 at the inner bottom of the housing 1, and the upper end portion 18 of the support body 9 is screwed into the threaded portion 11 of the bolt 12. A bolt hole 8 is threaded therein, and a bolt tip storage space 17 is provided between the leg portion 6 and the bolt hole 8, the inner diameter of which is larger than that of the threaded portion 11.

Therefore, before attaching the housing 1 to the mounting base 2, the bolt 12 has its tip 10 screwed into the bolt hole 8 screwed into the upper end 18 of the support 9, as shown in FIG. The threaded portion 11 of the bolt tip 10 is housed in the bolt tip storage space 17. Since the shaft portion 13 on the base end side of the threaded portion 11 is thinner than the root diameter of the threaded portion 11, that is, the peak diameter of the bolt hole 8, it fits loosely into the bolt hole 8 with some play.

The bolt tip storage space 17 is formed by welding the legs 6 of the support 9 to the vicinity of the screw holes 7 on the inner bottom of the housing 1 with or without reinforcing plate 14 between the support 9 and the housing. In the space surrounded by the inner bottom of the housing 1, the tip 10 of the bolt 12 is inserted into the bolt hole 8 screwed into the upper end 18 of the support 9 and the screw hole 7 at the inner bottom of the housing 1. It is constructed so that it is difficult to detach or protrude easily.

Furthermore, as described above, since the shaft portion 13 on the base end side of the bolt 12 fits into the bolt hole 8 with some play, there is some play in the tightening position of the bolt 12, and this play Therefore, it can be easily matched with the hole 19 of the mounting base 2.

Further, the support body 9 may be directly welded to the housing 1, but since the thickness of the housing 1 is generally not so thick, a reinforcing plate 14 is attached to the housing 1.
Preferably, the legs 6 of the support 9 are welded to.

The support 9 is generally cylindrical and has sufficient strength, but it may also have a gate-shaped structure.

Bolt holes 8 provided in the upper end portion 18 of the support body 9
is provided coaxially with the screw hole 7 of the housing 1,
The screw hole 7 and the bolt hole 8 are threaded with the same pitch as the threaded portion 11 of the bolt 12.

The fixing bolt 12 has a head 15 and a threaded portion 11.
The bolt is screwed into the bolt hole 8 of the support via a washer 5 as necessary.
The bolt 12 is held between the bolt hole 8 of the support 9 and the mounting hole 6 of the housing.
The bolt 12 is placed on the screw hole 7 of the support 9 or is slightly screwed in. The length of the shaft 13 and the threaded portion 11 of the bolt 12 is determined automatically by the height of the support 9 and the height of the space between the bolt hole 8 and the screw hole 7.

The head 15 of the bolt 12 is shown as a hex bolt, but may take any form as desired. That is, a bolt with a hole may be used, or a + or - screw head may be used.

At the installation site, the housing 1 having the mounting portion configured as shown in FIG. 11 is screwed and tightened to be fixed to the mounting base 2. At this time, the diameter of the shaft portion 13 of the bolt 12 is smaller than the root diameter of the threaded portion 11, and there is a slight degree of freedom in the bolt hole 8 of the support body 9 and the screw hole 7 of the housing 1. By screwing the threaded portion 11 of the tip 10 of the bolt 12 out of the screw hole 7 of the housing 1 in advance, alignment with the hole 19 of the mounting base 2 is facilitated.

The hole 19 of the mounting base 2 is generally constructed by welding a receiving nut 16 as shown in FIG. A tapped screw may also be used.

Since the present invention is constructed as described above, the tightening bolts can be installed in the housing in advance when assembling the housing, and the bolts do not easily come off and do not protrude outside the housing. It is extremely safe. In addition, when installing, by leaving the tip of the bolt slightly protruding from the threaded hole in the casing, you can easily center the bolt shaft, so you can use a box spanner or screwdriver to easily align the center of the bolt axis even in a narrow casing. Tightening can be easily done by simply pushing the screw in.

[Brief explanation of the drawing]

1 and 2 are vertical cross-sectional views of a conventional housing mounting structure, and FIG. 3 is a vertical cross-sectional view of the housing mounting structure according to the present invention, showing a state before the housing is attached to a mounting base. FIG. 4 is a longitudinal sectional view of the mounting structure of the casing, showing a state in which the casing of FIG. 3 is fixed to a mounting base. 1: Housing, 2: Mounting base, 6: Legs, 7: Screw holes, 8: Bolt holes, 9: Support, 10: Tip,
11: Threaded part, 12: Bolt, 13: Shaft part, 1
4: Reinforcement plate, 15: Head, 16: Receiving nut, 1
7: Bolt tip storage space, 18: Upper end, 1
9: Hole.

Claims (1)

[Scope of utility model registration request] Shaft part 1 on the proximal end side of threaded part 11 with screw installed
A bolt 12 formed at 3 to be thinner than the root diameter of the threaded portion 11, a screw hole 7 screwed into the threaded portion 11 screwed into the housing, and a leg portion 6 screwed into the screw hole at the inner bottom of the housing 1. A bolt hole 8 is screwed into the upper end portion 18 to be screwed into the threaded portion 11 of the bolt 12, and the length of the threaded portion 11 is fixed between the bolt hole 8 and the threaded hole 7. and a support 9 provided with a bolt tip storage space 17 formed with a large diameter, and a receiving nut 16 screwed into the threaded portion 11 of the bolt 12 and fixed to the support base. The threaded portion 11 of the bolt 12 is attached to the upper end 18 of the support body 9.
The threaded portion 11 is loosely inserted into the space 17, and the threaded portion 11 of the bolt 12 is screwed into the threaded hole 7 of the casing 1 when installing the casing. A housing mounting structure characterized in that the mounting base 2 is inserted through the bolt 12 and then screwed into the receiving nut 6, and the mounting base 2 is clamped between the head 15 of the bolt 12 and the receiving nut 16.