JPH0215691A - Fitting piece of printed substrate packaged component or the like - Google Patents

Abstract

PURPOSE:To enable not only the assembling of a component with other components at a time independently of the effect of the size of a fitting hole but also the use of a lead cutter after the assembly is completed by a method wherein a fitting piece is composed of two or more legs which are formed into one piece and extend downward from a head fastened to a circumferential edge of the fitting hole, non-return teeth, which are engaged with the inner wall of the fitting hole, are provided to the legs, and the legs are elastically deformable in such a manner that they are capable of approaching to or separating freely from each other through an opening. CONSTITUTION:A fitting piece 1 is formed by processing a plate into a specified shape, which is provided with a head 2 fastened to an upper edge of a component fitting hole 7a of a component 7 and legs 3 which are formed into one piece, ramified into two under the head 2, and provided with non-return teeth 3. Non-return teeth 4 are formed on the outside end of the legs 3 provided with non-return teeth, and the non-return teeth 4 have such a shape that they hardly hinder the entry of the legs 3 when the legs 3 are inserted into the component fitting hole 7a and prevent the legs 3 from moving in a direction of extraction. The head 2 of the fitting piece 1 has a diameter larger than that of the component fitting hole 7a, and the legs 3 are so structured as to be elastically deformable to approach to or separate (expansion and contraction) freely from each other through a center gap.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a fixture for fixing components to be mounted on a printed circuit board.

(Conventional technology) When mounting components such as transistors on a printed circuit board, or attaching connectors, heat sinks, and accessories for +III surface caps, bolts and nuts standardized by JIS etc. should be used. - Boat fishing.

FIG. 5 shows conventional means for attaching various parts to a printed circuit board, with connectors for 31 printed circuit boards;
32 and other accessories: When installing 36, 11 S
A fitting consisting of a standard bolt bolt 33 and a nut 34 and a fitting using a speed nut 35 are used.

Figure 3 fa) (bl shows an example of a mounting tool with a speed nut: 35, and a hole (or through hole)
: Attach the Naratoco 35 to the tip of the bolt 38 inserted into the workpiece 7 ('i-4) to print the part 36 Number of bases: 3
The pressure is the same as 1. Nut 35 has improved springiness.・
[i) A polygonal support hole 35a is temporarily formed,
The inner peripheral surface of the support hole 358 and the outer peripheral surface of the portco 38 are I:
It is fixed by sexual pressure bonding.

However, when mounting the electronic component 77 on the printed circuit board 1-, the lead wire extending from the electronic component must be led out to the opposite side through a through hole formed with After that, it is necessary to use a cutter to cut off the lead portion protruding from the opposite side of the board.For this reason, the conventional fixture consisting of bolts, nuts, and bolts had to be retrofitted at a later stage.

As a result, the disadvantage is that the number of assemblies increases, and the 1 method for bolts and nuts is different from the 1 method for mounting holes such as through holes.
Because it is limited to specific types depending on the relationship (diameter, plate thickness, parts shop), there is a drawback that different sizes of mounting hardware must be prepared depending on the slight differences in the mounting hole angle. .

Furthermore, since two parts, a bolt and a nut, are used, the installation work is complicated.

([Objective of the Invention] The present invention was made in view of [°], and can be mounted with one touch without being affected by slight differences in the size of mounting holes, etc., and moreover, it can be mounted on a printed circuit board set of 1γ] - Can be assembled with other parts at the same time,
The purpose of the present invention is to provide a mounting tool for printed circuit board mounted parts, etc., which can be used with a lead cutting cutter after assembly.

(Summary of the Invention) In order to achieve objective 1, the present invention provides a mounting tool for fixing a printed circuit board and a mounted component cap by being inserted through mounting holes respectively formed in the cap. The fixture consists of a head that engages with the periphery of the mounting hole of the mounted component, etc., and a plurality of integrated legs that protrude from the head in the direction. Inverted I that engages with the inner wall of each mounting hole
I. Teeth are formed.

Each leg piece can be elastically deformed so as to be able to approach and separate from each other via the open part.
i) It is characterized by being structured in a functional manner.

(Example) The mounting tool for printed circuit board mounted components, etc. of the present invention will be described in detail below based on the example shown in the attached drawings.

FIG. 1 is an explanatory diagram of the usage state of an embodiment of the fixture of the present invention,
Figure 2 is an enlarged view showing the state of use, Figure 2 ta> to 1G
) is an explanatory diagram showing adaptability according to differences in the shape of the mounting hole.

This fixture! is a plate-shaped body made into a predetermined shape /ILc L, which is integrally formed with a head 2 that is attached to the edge of the mounting hole 7a of the component 7 and a head 2 which is connected to the edge of the mounting hole 7a of the component 7, and a head 2 that is bifurcated below the head 2. It has a leg piece 3 with a non-return tooth. At the outer end of each reverse 11 and two-way leg piece 3, a reverse 1 and 4 are formed, and this reverse +1. m 4
When inserting the leg piece 3 into the component attachment hole 7a, the leg piece 3 is not obstructed from entering, but it is prevented from moving in the removal direction! It has a shape that allows you to

Preferable materials for the fixture 1 include metals (for example, copper), resins, etc. that have spring properties, sufficient strength, solderability, and pressability. It is also essential that the lead can be easily cut with a lead cutting cutter.

In FIG. 1, a component 7 is mounted on the printed circuit board 6, and this component 7 has a mounting tool 1 inserted through the mounting hole 6a of the printed circuit board 6 through the mounting hole 6a of the component 7. 1-11. Other accessories 8 are also fixed by the fixture 1.

The head part 2 of the fixture 1 has a length larger than the diameter of the mounting hole 7a of the component, and the leg pieces 3 can be elastically approached and separated (expanded and contracted) due to the presence of the central opening 8. It is configured.

This fixture 6 is inserted through the through-holes 6a and 7a of the printed circuit board 6 and the mounting hole 7a of the component 7 through the number holes 6a and 7a. -1”l
When inserted, the inverted teeth 4 formed on the leg piece 3 bite into the inner wall of the mounting hole 7a (6a), prohibiting movement in the same direction. If solder dip is performed in this state, The through hole 7a is filled with solder 6. The fitting 1 is made of a material that has good connectivity with solder, so there is a gap between the solder filled between the leg I3 and the inner wall of the through hole. A strong mechanical bond can be obtained.

In this state, when cutting the printed wire (111) with a lead cutter that protrudes toward the bottom F, the line β
The tip of each leg can be cut at the same time at the location shown in .

Parts 7 include transistors, connectors, heat sinks, +
Various parts and members that cannot be attached to a surface printed circuit board can be assumed.

Figure 3 fal (bl and (cl) are external mounting holes 6
a.

7a is an explanatory diagram showing a state where the same size fittings 1 are adapted to the difference in the diameter size of the mounting holes 6a and 7a, (d) is when the diameter of each mounting hole 6a, 7a is small, (b) is when the diameter is small. When the diameter is standard, (cl indicates the case where the diameter is large.

In either case, the inverted center tooth 4 bites into the inner wall of the mounting hole 71], and the head 2 engages the periphery of the mounting hole 721 of the component 7! By doing l-, one part 7 has a print base of 6
be fixed as a powerful country.

In the embodiment described in 1-1, the temporary fixture 1 was formed from a single plate-shaped body to reduce the number of cases 2, but as shown in Fig. 4, one temporary fixture 121 was By doing so, it is also possible to form a version of the four-piece wooden leg piece 3. In this case, each leg piece: 3I can be elastically expanded and contracted (approached and separated) through the central opening 8, and
The mounting function can be provided in accordance with the embodiment of the present invention. That is, according to this embodiment, the inside of the mounting hole is 90%
Since the parts can be joined at four locations at intervals of 100 degrees, the positioning accuracy of the parts can be improved.

Further, the fixture 1 shown in FIG. 4 may have an R/M integrated structure.

The shape of the head is not limited to that shown in the drawings; for example, an inverted 11-fη4 shape may be formed at the connection point with the 1-face of the component 7. Furthermore, the shape of the head 2 and the leg pieces 3 that constitute the fixture do not need to be plate-shaped;
For example, a bolt-like fixture consisting of a large-diameter head and a cylindrical leg can be made into a fixture with leg pieces by cutting the leg in the JIH direction.

Historically, the leg piece 3 does not necessarily have to extend straight, but may have a spindle-like shape with the center curved outward.

Historically, there can be any number of leg pieces up to 3.

In this way, in the present invention, the mounting tool is formed on the outside of the piece with a head having a size larger than the mounting hole and a plurality of legs 1'' extending from one head toward the force. In addition, each leg 11 is made to be elastically expandable (elastically deformable) through an open part, so that each mounting part and printed circuit board can be easily removed. Insertion into one hole is extremely smooth and easy, and detachment after insertion is rain-proofed.Especially, depending on the diameter of the mounting hole and the size of the parts and prints; A distinctive advantage is that it is not affected by noise.

In addition, since it can be manufactured by pressing I-, it can be manufactured by J'1-N'6 at low cost.

Since it can be incorporated as a positional element during installation work, manufacturing can be facilitated.

Historically, phosphorus +' has spring properties like a copper hat, and 1'.

By using a material such as metal or resin with good cutting properties for the connection f1, the value as a fixture can be greatly increased.

(Effects of the Invention) As described in (1) below, according to the present invention, the installation can be done with a single touch without being affected by I, IgW due to minute differences in the size of the mounting holes, etc. The 1-culm can be assembled at the same time as other parts, and the lead cutting cutter can be used after the culm has been assembled.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the usage state of an embodiment of the fixture of the present invention,
Figure 2 is an enlarged view showing the state of use, Figure 3: fat f
bl and (c) are explanatory diagrams showing the state in which a fixture of the same size is adapted to the fast diameter of the external mounting hole, and Figure 4 is a diagram of the second embodiment of the present invention. (1 construction explanatory diagram, Figures 5 and 6 (al (bl is an explanatory diagram of the conventional example)...Mounting tool 2...Head 3...Leg J'+4...
・Reverse square teeth 6...Number of print bases 621...Mounting hole 7a...Mounting hole (through pole) 8...Opening part special 1 piece [Applicant: Toyo Tsushinki Co., Ltd. Attorney, Patent Attorney 1: Hitoshi SuzukiFigure 6Figure 4Figure 5

Claims (1)

[Scope of Claims] A mounting device that fixes a printed circuit board and a mounted component by being inserted through each mounting hole formed in each of the mounting components, etc., wherein the mounting tool is attached to the periphery of the mounting hole of the mounted component, etc. It consists of a head to be locked and a plurality of legs protruding from the head, each leg is formed with a check tooth that engages with the inner wall of each mounting hole, and each leg is 1. A fixture for printed circuit board mounted parts, etc., characterized in that it is configured to be elastically deformable so as to be able to approach and separate through an opening.