JPS63101508A - Mounting structure of part, etc. - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a mounting structure for parts, etc., in which the parts, etc. are inserted into the mounting holes of a mounting body and fixed.

[Prior Art] In conventional mounting structures for components, components, etc. are fixed as shown in FIGS. 3 and 4.

That is, in the mounting structure shown in FIG.
The components 20 were mounted by forming a flange 22 on the mounting portion 21 of 0 and fixing the flange 22 to the outer wall surface 10a of the mounting body 10 with screws.

In addition, in the mounting structure shown in FIG. 4, a groove 21a is formed on the circumferential surface of the mounting portion 21 of the component 20, and an elastic spring 23 is installed in this groove 21a to attach the component 20 to the mounting body lO.
It was mounted by press-fitting it into the mounting hole 11 of the.

[Problems to be Solved] However, the mounting structure using the flanges 22 has the problem that although the parts 20 can be securely attached because they are fixed with screws, it takes a lot of time and effort to apply the film. Ta. Also, the flange 22 and screws are exposed on the outer surface 10a of the mounting body 10! There was also the problem of poor appearance on the screen.

Further, in the mounting structure using the elastic spring 23 described above, the component 20 is held only by the pressing force of the elastic spring 23 against the mounting hole 11. Therefore, when a certain external force is applied, there is a problem in that the parts 20 are pulled out of the mounting body 10.

[Means for Solving Problems] The present invention has been made to solve the above problems, and includes a mounting structure for parts, etc., in which the parts, etc. are inserted into the mounting holes of the mounting body and fixed. Grooves are provided at corresponding positions on the circumferential surface and the inner circumferential surface of the mounting hole of the mounting body, and a component, etc., is fitted into the corresponding groove and straddles between both grooves, and deforms under specific temperature conditions. A retainer made of a shape memory alloy is provided which fits into one groove, thereby securely fixing parts etc. to the mounting body.
It is also designed to be easily attached and detached.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

1 and 2 show the mounting structure of parts etc. of the present invention,
FIG. 1 is a side sectional view of the parts and the like in a state of attachment and detachment, and FIG. 2 is a side sectional view of the parts and the like in a fixed state. In the embodiment, the mounting structure of the present invention will be explained in terms of the relationship between an antenna main body 10 such as a phased array antenna and an antenna element 1.

The antenna element 1 has a mounting portion 2 on the rear end side attached to the antenna body 1.
0 into the cylindrical mounting hole 11 and fixed with a ring 4 made of shape memory alloy.

That is, the outer diameter of the mounting portion 2 is slightly smaller than the inner diameter of the mounting hole 11, and a groove 3 is formed on the circumferential surface of the mounting portion 2.
It is formed. The depth of this groove 3 is approximately equal to the width W of the ring 4.

Furthermore, a groove 12 is formed on the inner peripheral surface of the mounting hole 11 of the antenna body 10 at a position corresponding to the groove 3 of the antenna element 1. The depth of this groove 12 is made sufficiently shallower than the width W of the ring 4.

Therefore, even if the ring 4 is inserted into the groove 12, it does not fit completely within the groove 12, but protrudes from the inner circumferential side thereof.

The ring 4 fitted into the groove 3 of the antenna element 1 is molded from a shape memory alloy, and changes its shape from a normal state to a set state under arbitrary temperature conditions. In the embodiment, the ring 4 expands in a normal state so that its outer circumferential side protrudes outside the groove 3, and in the set state it contracts and fits entirely within the groove 3.

That is, when the antenna element 1 is fitted into the mounting hole 11 of the antenna body 10, the ring 4 expands in a normal state and spans both the groove 12 of the antenna body 10 and the groove 3 of the antenna element 1, and the antenna This prevents the element 1 from being pulled out (see Figure 2). Further, in the set state, the ring 4 is contracted and fits into the groove 3, allowing the antenna element 1 to be extracted (see FIG. 1).

Next, a procedure for mounting the antenna element 1 will be explained. Before the antenna element 1 is mounted, a set temperature is applied to the ring 4 in an expanded state to transform the ring 4 into a contracted state, and the entire ring 4 is housed in the groove 3. In this state, the antenna element 1 is inserted into the mounting hole 11. The ring 4 deforms and returns to its normal state at room temperature, and straddles between the grooves 3 and 12 of the antenna element 1 and the antenna body 10 to fix them together.

In addition, when removing the antenna element 1 from this mounted state, if the set temperature is applied to the ring 4, the ring 4 can be removed.
shrinks to the set shape and allows the antenna element to be extracted.

In the embodiment, the shape memory alloy retainer is the ring 4, but the present invention is not limited to this.
For example, the antenna element 1 may be fixed by attaching shape memory alloys bent into a dogleg shape at several locations within the groove.

Alternatively, the groove 12 of the antenna body 10 may be made deep so that the ring 4 can fit within the groove 12 at a set temperature. Furthermore, the present invention provides an antenna main body 10 and an antenna element 1.
It is used not only for mounting structures with but also for mounting various parts.

[Effects of the Invention] The present invention utilizes the characteristics of shape memory alloys as described above,
By mounting the components, etc., it is possible to securely fix the components to the mounting body, and it is possible to easily attach and detach the components by simply changing the temperature conditions.

In addition, since the retainer is not exposed to the outside, it has a good appearance, and because it is lightweight, it has less effect on the overall mass of devices that have many parts assembled to form a single system, such as a phased array antenna. There are also effects like this.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, in which FIG. 1 is a side sectional view of parts etc. in the state described above, FIG. 2 is a side sectional view of parts etc. in a fixed state, and FIGS. FIG. 4 is a side sectional view showing a conventional mounting structure for components and the like. 1: Antenna element (mounting parts) 3.12: Groove 4: Ring (retainer)

Claims (1)

[Scope of Claims] In a mounting structure for parts, etc., in which a component, etc. is inserted and fixed into a mounting hole of a mounting body, at corresponding positions on the circumferential surface of the mounting portion of the component, etc. and the inner circumferential surface of the mounting hole of the mounting body, respectively, A groove is provided in each groove, and a retainer made of a shape memory alloy is provided in the corresponding groove, which straddles between both grooves when a component, etc. is inserted, and deforms and fits into one groove under specific temperature conditions. A mounting structure for components etc. characterized by: