JPH028370Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an insulating sleeve for connection terminals in electronic equipment, which allows wiring to be detachably connected one by one.

[Prior Art] Conventionally, connection terminals that can be detachably connected to each wire have been used to facilitate maintenance and inspection and component replacement between boards of electronic devices or between boards and components.

As such connection terminals, crimp terminals that do not require soldering are used, and this crimp terminal part is
Covered with an insulating sleeve.

To attach the insulating sleeve to the crimp terminal, connect the crimp terminal to one end of the wiring wire using the required crimping tool, and then push the cylindrical insulating sleeve from the tip of the crimp terminal. It is done by hand.

[Problem that the invention attempts to solve]

When crimp terminals are attached to wiring cords, male terminals are often used on the device or circuit board side, so female terminals are often used for wiring cords.

Many female terminals are flat, and therefore the insulating sleeve that is fitted over the female terminal is also flat and elongated.

The insulating sleeve is provided with a structure to prevent it from falling off when it is fitted onto the terminal, and therefore, when installing the insulating sleeve, it is required to have directionality and to distinguish between front and back.

However, the insulating sleeve does not have sufficient features to allow easy identification of front and back and front and back at the same time, resulting in reduced workability.

The present invention provides an insulating sleeve whose front and rear directions and front and back sides can be easily identified at a glance.

[Means for solving problems]

The present invention is an insulating sleeve made of highly flexible transparent synthetic resin that is open at both ends and has an elongated flat rectangular cylindrical shape. By providing a flesh pattern, the above-mentioned problems can be solved.

[Effect]

Since the uneven thickness pattern provided on the inner surface of the transparent insulating sleeve can be seen through, it is easy to identify the front and back of the insulating sleeve and the front-to-back relationship based on the wall surface on which the pattern is provided and the front and rear positions of the pattern. I can do it.

〔Example〕

FIG. 1 shows an example of an insulating sleeve as an embodiment of the present invention and a crimp terminal attached thereto.

The crimp terminal B connected to the wiring cord A is mainly female, and has a flat female spring piece D at the tip C.
It is crimped and connected to the core wire F of the wiring cord A via the crimping part E.

The insulating sleeve 1 has openings 2 at the front and rear ends.
3, and has a flat rectangular cross section that can circumscribe the inner cavity 4 to the female spring piece D, and the crimp terminal B and the end G of the wiring cord A are relatively long. It has an elongated, flat rectangular cylindrical shape that can be coated.

A check protrusion 5 is provided approximately in the center of the inner cavity 4 to prevent the crimp terminal B from coming off when the insulating sleeve 1 is fitted onto the crimp terminal B. This non-return protrusion 5 engages with the rear edge D' of the female spring piece D.

The tip opening 2 of the insulating sleeve 1 is lower in height than the inner cavity 4 so that the female spring piece D does not protrude forward.

The insulating sleeve 1 is made by dipping the required mold material into a liquid resin material that is highly flexible when hardened, attaching the resin material around the mold material, pulling it up and curing it, and then removing it from the mold material. It is best to make it using a manufacturing method called

The shape of the inner cavity 4 of the insulating sleeve 1 made by this manufacturing method has a precise shape depending on the mold material.
The overall shape is rounded and has few distinctive features.

In addition, in the installation work of the crimp terminal, as shown in FIG. Align the cylindrical wall surface 6 (hereinafter referred to as the front side) with the rear opening 3 into which the crimp terminal B is inserted.
must be directed towards.

However, since the insulating sleeve 1 has few external features, it is difficult to distinguish its front and back directions, as well as its front and back sides with the front side as the front side.

Therefore, in the present invention, the highly flexible resin material is made transparent, and when the insulating sleeve 1 is placed in the normal mounting position, the inner surface of the wide cylindrical walls 6 and 7, which easily face the top or bottom surface, is A pattern 8 whose thickness is uneven with respect to the thickness of the walls 6 and 7 is provided at either the tip or the rear end so as to be biased near one of the openings 2 and 3.

The transparency of the resin material can be determined, for example, from the outside of the cylinder wall 6 provided with a thick arrow-shaped pattern 8, as shown in FIG.
The pattern 9 on the inner surface 6a can be seen, and the pattern 8 on the opposite side of the cylinder wall 6 can be seen from the outside of the cylinder wall 7 on the side without the pattern 9 through the cylinder wall 7. Bye.

Note that the resin material may be colored as long as the pattern 8 can be seen through it.

The insulating sleeve 1 provided with the pattern 9 allows the operator to easily recognize the front and rear direction and the front and back states of the insulating sleeve 1 by the appearance of the pattern 8 in any placed state. can.

The pattern 8 is the arrow pattern 8 shown in Figure 1.
a, patterns representing signs such as logos, figures, etc., meaningless patterns such as the mesh pattern 8b shown in FIG.
It may be either a striped pattern such as a rib-like pattern that also serves as reinforcement or separation as shown in FIG. 5, or a character pattern such as the letters 8a representing the format and size shown in FIG.

Also, the uneven thickness for expressing the pattern 8 is the wall surface 6, 7.
The pattern 8 portion may be thicker or the pattern 8 portion may be thinner than the wall thickness.

[Effect of idea]

The insulating sleeve according to the present invention has a transparent pattern that makes it easy to recognize the direction and front and back.
The workability of attaching the crimp terminal to the crimp terminal is improved.

[Brief explanation of the drawing]

The figures show embodiments of the present invention, and FIG. 1 is a perspective view showing one embodiment of an insulating sleeve with a pattern as a marker, together with a crimp terminal.
Figure 3 is a cross-sectional view taken along the - line in the figure, Figure 3 is a cross-sectional view taken along the same line, and Figures 4 and 5 show other embodiments. FIG. 5 is a perspective view of an insulating sleeve provided with a reinforcing rib pattern, and FIG. 6 is a perspective view of an insulating sleeve provided with a character pattern. 1... Insulating sleeve, 2, 3... Opening, 4...
...Inner cavity, 5...Return check protrusion, 6, 7...Wall surface, 8...
...Pattern, 8a...Arrow pattern, 8b...Mesh pattern,
8c...Rib-like pattern, 8d...Character.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In an insulating sleeve made of transparent synthetic resin that is open at both ends, has an elongated oblate rectangular cylindrical shape, and is highly flexible, with a wide opening near one of the openings. An insulating sleeve with an uneven thickness pattern on the inner surface of the cylinder wall. (2) The insulating sleeve according to claim (1), wherein the uneven thickness pattern portion is thinner than the cylindrical wall. (3) The insulating sleeve according to claim (1), wherein the uneven thickness pattern portion is thicker than the cylinder wall. (4) The insulating sleeve according to any one of claims (1) to (3), wherein the uneven thickness pattern represents a marker pattern. (5) The insulating sleeve according to any one of claims (1) to (3), wherein the uneven thickness pattern represents a character pattern. (6) The insulating sleeve according to claims (1) to (3) of the utility model registration, wherein the uneven thickness pattern represents a meaningless pattern.