JPH031906Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a terminal mounting structure for electronic devices such as tuners.

(Prior art) The input/output terminals of electronic devices such as ordinary tuners must be compact and firmly fixed, and the processing and installation work is easy. There is a need for a material that is suitable for use with various plate thicknesses.

FIGS. 1a and 1b respectively show conventional examples of mounting structures for input/output terminals used for such applications.

In all of these conventional examples, a terminal insertion hole 1a is provided in the frame 1, and on the other hand, the terminal 2 is formed from a tapered molded part made of a material such as resin with a terminal lead wire 4 passing through the center thereof. It is constructed by press-fitting the terminal 2 into the insertion hole 1a.

However, this mounting structure has the drawback that the inserted terminals tend to rattle or come off due to variations in the dimensions of each component and variations in force during press-fitting.

FIG. 2 shows another conventional example that has already been devised to eliminate these drawbacks. As shown here, the frame 1 has a notched terminal insertion hole 1a.
On the other hand, the terminal 3 is formed from a terminal mold part through which the terminal lead wire 4 passes through the center and has a protrusion 31. When installing a terminal 3 having such a structure, after aligning and inserting the notch 1b of the terminal insertion hole 1a of the frame 1 and the protrusion 31 of the terminal 3, rotate the terminal 3 by 90 degrees and install it. was.

(Problems to be solved by the invention) In such a conventional mounting structure, the mold structure for molding the terminal is complicated, and only the protrusion 31 is used to prevent the terminal 3 from coming off. This causes the terminal 3 to wobble due to variations in the dimensions of each part. In addition, in the conventional example shown in FIG. 1, the frame 1 needs to have a certain thickness in order to firmly fit the insertion hole 1a and the mold part, and the example shown in FIG. Since the position at which the protrusion 31 is to be provided is determined during molding, a frame 1 having a predetermined thickness must be selected, resulting in a problem that the range of application for attachment is narrow.

This invention was made in view of the above points,
The purpose is to provide a terminal mounting structure that has a simple shape, is easy to mold, has a constant mounting strength to the frame, and does not wobble even when the plate thickness is selected from a wide range. .

(Means for Solving the Problems) According to the present invention, a terminal insertion hole is formed in a frame in a non-circular shape having a major axis and a minor axis, a large diameter portion having a diameter larger than the major axis, and the terminal insertion hole. A small diameter portion that can be inserted into the hole and has a cross-sectional shape substantially similar to that of the terminal insertion hole is comprised of a terminal integrally molded from a plastic insulating material with a lead wire provided passing through the small diameter portion. It is possible to provide a terminal mounting structure that achieves this.

(Function) In the terminal mounting structure of the present invention, the small diameter portion of the terminal is inserted into the terminal insertion hole, the terminal is rotated at a predetermined angle with respect to the insertion hole, and the terminal is inserted into the insertion hole of the frame. The terminal is attached and held.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

3 to 5 show one embodiment of the present invention, and the same reference numerals are used for equivalent parts to those shown in FIG. 1.

FIG. 3a is a perspective view showing the frame 1 and the terminal 2, and the frame 1 is provided with an elliptical terminal insertion hole 1a. The terminal 2 consists of a large diameter part 2b and a small diameter part 2a, which have an elliptical cross-sectional shape with different diameter lengths at the top and bottom due to an intermediate step, and are integrally molded from an elastically deformable material such as resin. The molded part is embedded so that the terminal lead wire 4 passes through the part in the vertical direction.

The details of the terminal 2 are shown in FIG. 4, where its side and bottom shapes are shown. That is, the terminal 2 consists of a small diameter part 2a formed in an elliptical shape similar to the terminal insertion hole 1a of the frame 1, and a large diameter part 2b formed in an ellipse shape that is larger overall than the terminal insertion hole 1a, The small diameter portion 2a is large enough to be inserted into the terminal insertion hole.

The operation of the terminal mounting structure configured as described above will be explained next.

First, the elliptical small diameter portion 2a of the terminal 2 is inserted into the elliptical terminal mounting hole 1a of the frame 1.
As shown in FIG. 3b, the terminal insertion hole 1a is configured such that the short axis A and the long axis of the ellipse almost match the dimensions of the small diameter part 2a, and the small diameter part 2a of the terminal 2 is slightly smaller. Therefore, the small diameter portion 2a can pass through the terminal insertion hole 1a. In addition, B has shown the long axis of the small diameter part 2a. After the small diameter portion 2a of the terminal 2 is inserted into the terminal insertion hole 1a, it is rotated 90 degrees, and the short diameter A of the terminal insertion hole 1a and the small diameter portion 2 of the terminal 2 are rotated 90 degrees.
The small diameter portion 2a corresponding to the dimensional difference between a and the long diameter B, that is, B-A, bites into the terminal insertion hole 1a of the frame 1, resulting in a strong fit and the terminal 2 being firmly attached.

FIG. 5 is a longitudinal cross-sectional view and a cross-sectional view showing this state. The values of A and B should be set appropriately depending on the material of the terminal 2, but in general, if B = 5 mm, designing with B-A = approximately 0.3 mm will ensure appropriate workability and installation. The bonding strength can be obtained.

6 and 7 show other embodiments of the present invention.

FIG. 6a is a side view and a bottom view showing the structure of the terminal 3, in which the terminal 3 is provided with a large diameter portion 3b and a locking portion 3c, sandwiching a small diameter portion 3a. Figure 6b
1 shows the shapes and sizes of the terminal insertion hole 1a, the small diameter portion 3a (indicated by broken lines), and the locking portion 3c (indicated by diagonal lines) of the frame 1, all of which are elliptical. The long diameter B of the small diameter portion 3a is the terminal insertion hole 1.
It is larger than the short axis A of the locking part 3c and smaller than the long axis C of the locking part 3c. Two protrusions 3d are provided on the large diameter portion 3b at positions facing each other in the longitudinal direction of the lower surface of the step. As shown in FIG. 6b, the frame 1 is also provided with notches 1b that match the protrusions 3d at opposing positions in the short diameter direction of the terminal insertion holes 1a. In the illustrated embodiment, two protrusions 3d are provided at positions opposite to each other in the major axis direction of the lower surface of the step, but there may be only one, or they may be provided at positions opposite to each other in the minor axis direction of the lower surface of the step. It may also be provided at a position facing the opposite direction. In that case, the cutout portion 1b is also formed at a corresponding position.

FIG. 7 is a vertical cross-sectional view and a cross-sectional view showing the installed state of the above embodiment. In this example, terminal 3
When rotated by a predetermined angle, the small diameter portion 3a bites into the terminal insertion hole 1a and is deformed to form a strong fit. On the other hand, since the locking part 3c is configured not to be deformed by the terminal insertion hole 1a, even if the difference in dimension between the short axis and the long axis B of the small diameter part 3a is made larger than that of the previous embodiment, the terminal 3 can be easily inserted and rotated, and the installation strength is also increased.

In addition, a protrusion 3d provided on the large diameter portion 3b of the terminal 3
has the effect of stopping the rotation of the inserted terminal 3 by matching with the notch 1b of the terminal insertion hole 1a when the inserted terminal 3 is rotated.
The rotational stability within the vehicle will also be increased.

It goes without saying that the present invention is not limited to the details of the configuration and structure of the illustrated embodiments, and it is possible to realize the present invention using other embodiments or various embodiments. be. Moreover, the language and terminology herein is to be understood in the sense of disclosure and not of limitation.

(Effects of the invention) As explained above, the present invention has a terminal insertion hole formed in a frame in a non-circular shape consisting of a major axis and a minor axis,
A large diameter portion having a diameter larger than the long diameter and a small diameter portion insertable into the terminal insertion hole and having a cross-sectional shape substantially similar to that of the terminal insertion hole are integrally made of plastic insulation with a lead wire provided passing through them. A terminal mounting structure consisting of a terminal molded with a material, the small diameter part of the terminal is inserted into the terminal insertion hole, the terminal is rotated at a predetermined angle with respect to the insertion hole, and the terminal is mounted on the frame. Because it can be held, the shape of the terminal can be simplified and the mold for manufacturing the terminal can be easily manufactured.Using the characteristics of the resin used to mold the terminal, it can be inserted into the terminal insertion hole of the frame. Because of this, the mounting strength is constant and it is possible to provide a terminal mounting structure that does not cause backlash. It is also widely applicable to insertion holes of various frame bodies with different plate thicknesses, and can be used to attach terminals of various electronic devices.

[Brief explanation of the drawing]

Figures 1a, b and 2 respectively show conventional examples of mounting structures for input/output terminals, and Figures 3 to 5 show an embodiment of the present invention.
is a perspective view showing the frame 1 and the terminal 2, FIG. 3b
is an enlarged sectional view, FIG. 4 is a diagram showing the side and bottom shapes, FIG. 5 is a longitudinal sectional view and a cross sectional view showing the fitted state, and FIGS. This is another embodiment of the invention. 1... Frame body, 2, 3... Terminal, 1a... Terminal insertion hole, 2a, 3a... Small diameter part, 2b, 3b... Large diameter part, 4... Terminal lead wire, 3c... Locking part ,3
d...Protrusion.

Claims (1)

[Claims for Utility Model Registration] (1) A non-circular terminal insertion hole formed in the frame with a major axis and a minor axis, a large diameter portion larger than the major axis, and a terminal that can be inserted into the terminal insertion hole. A small diameter portion having a cross-sectional shape substantially similar to that of the terminal insertion hole is formed of a lead wire provided through the small diameter portion and a terminal integrally molded with a plastic insulating material, and the terminal is inserted into the terminal insertion hole. A terminal mounting structure characterized in that the terminal is mounted and held by inserting a small diameter portion of the frame body, rotating the terminal at a predetermined angle with respect to the insertion hole, and biting the terminal into the insertion hole of the frame body. (2) The terminal insertion hole has a notch connected thereto, and the terminal has a locking part provided on the opposite side of the small diameter part from the large diameter part, and a locking part provided in the small diameter part on the opposite side of the large diameter part, and A projection is provided on a step side of the large diameter portion and the small diameter portion, and the small diameter portion engages with the terminal insertion hole, and the projection engages with the notch. A terminal mounting structure according to claim (1) of the utility model registration claim.