JPH02113107A - Installing device for plate body - Google Patents

Abstract

PURPOSE:To dispense with a spacer in order to simplify the assembling work using a device for installing a plate body whose thickness is thinner than the length of an unthreaded part of a screw, by providing a recessed part around an installing hole of either one of a main body and a plate-body, so that the unthreaded part does not reach the main body. CONSTITUTION:When a plate body 2, whose thickness is thinner than the length of a screw, is threadably attached to a main body 1 by means of the screw after coinciding an installing hole 6 of the plate body 2 with an installing hole 5 of the main body 1, a recessed part 7 is provided around the installing hole 5 of the main body 1, so that the unthreaded part 4b of the screw 4 does not reach the main body 1. With this contrivance, the screw will not run idle, while the plate body 2 will not deform during the fastening work, thereby ensuring firm attachment by a screw.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device in which a plate is screwed onto a main body,
This invention relates to a mounting device for a plate whose thickness is thinner than the length of a non-threaded portion of a screw.

[Conventional technology]

FIG. 3 is a diagram showing a conventional structure of this type, and in the figure,
1 is a main body, 2 is a plate, 3 is a spacer, 4 is a screw consisting of a head 4a, a non-threaded part 4b, and a threaded part 4c, and 52 is a mounting hole formed in the main body 1 and the plate 2. .

Next, to explain the assembly procedure, first, align the mounting hole 7 of the plate body 2 with the mounting hole 6 of the main body 1, and screw the screw 4 through the spacer 3.
Screw it on. At this time, the number in the diagram.

The length is the length L2 of the non-threaded part 41 of the screw 4 shown in FIG.
This prevents defects in tightening due to idle rotation of the screw 4.

[Problem to be solved by the invention]

In the conventional structure as described above (well, since the non-threaded part 4b of the screw 4 was tightened through the spacer 3 so that it did not reach the main body 1, the number of parts increased, the assembly work was troublesome, and the assembly time was increased. There was a problem that it took a long time and the cost was high.

The present invention provides the above-mentioned a! The purpose of this invention is to provide a mounting device that has a small number of parts and is easy to assemble.

[Means to solve the problem]

In the mounting device according to the present invention, a recess is provided around the mounting hole of either the main body or the plate, and the dimension L1, which is the sum of the thickness of the plate and the recess, is determined from the length L8 of the non-threaded part of the screw. It was made to be big.

[Effect]

In the mounting device according to the present invention, the non-threaded part of the screw does not reach the main body by a recess provided around the mounting hole of either the main body or the plate, and the plate is screwed with the screw. In this case, there is no need to use a spacer, the number of parts is small, and the assembly work is simple.

〔Example〕

An embodiment of the present invention will be described below.

In FIG. 1, reference numeral 1 denotes a main body, and a concave portion 7 of diameter 1 is formed around a mounting hole 5.

Reference numeral 2 denotes a thinner plate whose plate thickness is equal to the length of the non-threaded portion 4b of the screw 4. Reference numeral 6 indicates a mounting hole formed in the plate body 2.

Here, let the diameter of the head 4a of the screw 4 be , and let the length of the plate 2 plus the dimension of the recessed part be L□. Also,
It is formed so that Dl<Di-L□>L.

Next, the assembly procedure will be explained. First, the mounting hole 6 of the plate body 2 is aligned with the mounting hole 5 of the main body 1, and screwed with the screw 4. At this time, a recess 7 is formed around the mounting hole 5 of the main body 1, and >L2
Since the non-threaded portion 4b of the screw 4 does not reach the main body 1, the screw 4 does not sometimes idle during tightening.

Furthermore, the diameter D□ of the recess 7 is the diameter D of the head 4a of the screw 4.
! Since it is formed to be smaller, the plate body 2 will not be deformed and a strong screw connection can be obtained.

FIG. 2 shows another embodiment of the present invention, in which a recess 7 is formed around the mounting hole 6 of the plate 4, and the same effect as the above embodiment can be obtained. .

〔Effect of the invention〕

As described above, according to the present invention, a thin plate can be securely screwed into the body without using a spacer by using a simple structure in which a recess is formed around the mounting hole of either the main body or the plate. can reduce the number of parts, simplify assembly,
This has the effect of reducing assembly time.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the main part showing one embodiment of the plate mounting device according to the present invention, FIG. 2 is a sectional view of the main part showing another embodiment of the invention, and FIG. 3 is a main part sectional view of the conventional example. A partial sectional view, FIG. 4 is a diagram showing the structure of the screw. In the figure, 1 is the main body, 2 is the plate body, 4 is the spring screw, 4a is the head of the screw, 4b is the non-threaded part of the screw, 4c is the threaded part, 5 and 6 are the mounting holes, and 7 is the recessed part. Agent Masuo Oiwa (2 others) Fig. 2 Fig. 1 Fig. 2 Plate body 4 Pheasant sieve non-wintering part 5Ti 6 Mounting hole 7 Recessed part tusk 4 Fig. 1 and 3

Claims (1)

[Claims] In the case where a plate whose thickness is thinner than the length of the non-threaded part of the screw is screwed onto the main body, a recess is provided around the mounting hole on either the main body or the plate, and the recess is added to the thickness of the plate. A mounting device for a plate body, characterized in that the plate body is screwed so that the length L_1 is greater than the length L_2 of the non-threaded part of the screw.