JPS6110948B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a plurality of synthetic resin insulating sleeves for fixedly holding electrical connector elements such as crimp terminals in a state in which they are inserted, so that the mutual orientation of each element insertion port is fixed. The insulating sleeve strip of unit length is formed by molding the insulating sleeve strip in a state in which the insulating sleeve strip is integrally connected with the synthetic resin strip-shaped connecting plate portions at intervals, and the insulating sleeve strip is integrally connected from one longitudinal end side of the insulating sleeve strip. a connecting band plate portion protruding from the
By integrally connecting the insulating sleeve band with a connecting band plate portion integrally projecting from the other end in the longitudinal direction of another insulating sleeve band formed in the same manner as the insulating sleeve band during molding of the latter insulating sleeve band, both The present invention relates to a long insulating sleeve band for an electrical connector, which is constructed by integrally connecting insulating sleeve bands in their longitudinal directions.

This type of long insulating sleeve band is constructed by connecting each sleeve with a band-like connecting plate part to form a unit length sleeve band, and further connecting the sleeve bands with a connecting band plate part to form a long insulating sleeve band. Since the sleeves are configured to be long, each sleeve is sent one by one to a plastic crusher and mechanically crushed, and then, or at the same time, each sleeve is combined with a band-shaped connecting plate part or a connecting band plate part. This can be effectively used to automate post-processing such as separating the parts, but in the past, the band-shaped connecting plate part was necessary when feeding it into the plastic crushing machine, but had to be cut afterwards. Since all of the connecting strip parts were made of thin-walled members so that they could be easily cut, when the long insulating sleeves were fed into the plastic crusher in order, the belt-shaped connecting plate parts and the connecting strip parts were Due to twisting of the parts, the relative postures of the sleeves change relatively significantly, and there is a risk of machining defects such as failure to perform crushing as expected. Furthermore, if the wall thickness of the band-shaped connecting plate portion and the connecting band plate portion is configured to be large enough so that the above-mentioned relative posture change between the sleeves is difficult to occur, a large external force may be applied during cutting during the above-mentioned cutting process. There are also disadvantages such as new deformation of the sleeve portion as the sleeve acts, or the inability to maintain the long sleeve band in a compact rolled state. It was difficult to increase the thickness.

The present invention makes it possible to sufficiently suppress changes in the relative postures of the respective sleeves by simply improving the structure of the belt-like connecting plate portion and the integral connecting portion, and further enables compact winding of the long sleeve belt. The long insulating sleeve band is suitable for continuous mechanical post-processing by making it easy to cut the sleeve and the band-shaped connecting plate part or the integral connection part. The purpose is to obtain.

The characteristic structure of the present invention for achieving the above object is that the elongated insulating sleeve band for electrical connectors is constructed by molding as described above.
The integral connecting portion of the band-shaped connecting plate portion and the both connecting band plate portions located between adjacent sleeves is formed so that the wall thickness of the root portion to the sleeve extends over the entire width in the width direction of the insulating sleeve band. This structure is configured to have a thickness smaller than that of other parts of the band-shaped connecting plate portion 2 and the integral connecting portion 4, and this structure provides the following effects.

That is, since each sleeve, the band-shaped connecting plate part, and the connecting band plate part are constructed by molding, we focused on the fact that there is no problem even if their shapes are somewhat complicated, and the band-shaped connecting plate part is constructed by molding. The plate part and the integral connection part are not simply flat plate-shaped, but are formed into a structure having a thick part and a thin part,
Moreover, by configuring the thin wall portion to be formed over the entire width at the base of the sleeve, the above-mentioned conditions required for this type of long insulating sleeve band are met, and the machine A long insulating sleeve band suitable for continuous post-target processing was obtained.

In other words, the thin-walled portion is formed over the entire width at the connection position of the band-shaped connecting plate portion and the integral connection portion to the sleeve, where stress generated due to cutting is likely to concentrate during cutting. Stress tends to concentrate at the boundary between the belt-like connecting plate and the integral connecting part and the sleeve, and cutting failure easily progresses over the entire width of this connecting part, so that the cutting process can be easily performed. This makes it easy to avoid leaving fin-like fragments on the side surface of the sleeve after cutting, and it is possible to obtain a sleeve with beautiful cut marks.

Furthermore, due to the presence of the thin walled portion, it is possible to hold the long insulating sleeve band in a compact winding position using the thin walled portion as a fold line, and the thin walled portion is connected to the root portion of the sleeve. The sleeve is formed with
The cutting process of the band-like connecting plate part and the integral connecting part can be easily performed, and furthermore, since the band-like connecting plate part and the integral connecting part are thick in other parts except the root part to the sleeve, The belt-like connecting plate part and the integral connecting part themselves are difficult to twist, and therefore, although they have a thin wall part, the presence of the thin wall part causes the belt-like connecting plate part and the integral connecting part to twist, and each sleeve It is also possible to avoid inconveniences such as large changes in the relative postures of the two.

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 1A and 1B, a small diameter cylindrical portion 1A into which the proximal cylindrical portion a of a crimp terminal A (an example of an electrical connector element) can be inserted and held from one end side.
and a large-diameter tube that can be inserted from the other end side into a state where the electric wire end portion B and the conductive wire tip portion b from which the insulation coating has been removed are inserted into the base end tube portion a. The small diameter cylindrical portion 1A has a portion 1B, and the small diameter cylindrical portion 1A has the crimp terminal A and the wire end portion B inserted therein.
A long insulating sleeve band in which a large number of synthetic resin insulating sleeves 1 are connected in a band shape to fix and hold the crimp terminal A and the wire end B in an electrically connected state by plastic crushing due to external mechanical force. In this case, a plurality of the insulating sleeves 1 are connected to the large diameter cylindrical part 1B through the synthetic resin band-shaped connecting plate part 2 at equal intervals in a parallel posture with each crimp terminal insertion port facing a certain direction. It is constructed by integrally connecting a plurality of insulating sleeve bands 3 of unit length in the longitudinal direction, which are formed by molding in a state where they are integrally connected.

The insulating sleeve band 3 has adjacent sleeves 1, 1
Sleeve 1 of the band-shaped connecting plate portion 2 between...
The root portion of the insulating sleeve band 3 is made thin over the entire width in the width direction of the insulating sleeve band 3 , and is configured to be able to be wound in the longitudinal direction by bending at the thin root portion, and , the band-shaped connecting plate portion 2...
... are connected to the outer circumferential surface of the sleeve 1 via an arcuate surface so as to smoothly bend the base portion.

The structure of the integral connecting portion 4 of each of the insulating sleeve bands 3 , 3 , . In order to connect to the connecting band plate part 4B integrally projecting from the other longitudinal end side of the sleeve band 3 , when molding the latter insulating sleeve band 3 , a separate molding die 7 surrounded by a group is used. The one-end connecting band part 4A of the former insulating sleeve band 3 is inserted into the molding-equivalent space 7a of the end-connecting band plate part 4B and molded while being held, thereby integrally joining both insulating sleeves. The belts 3 and 3 are configured to be integrally connected.

Specifically, the distal end portion 6A of the one-end connecting band plate portion 4A of the insulating sleeve band 3 is formed into a shape that is slightly narrow and gradually becomes narrower toward the proximal end, and Four holes 8A penetrating through the strip plate portion 4A in the thickness direction are formed, and the other end connecting strip portion 4B of the insulating sleeve band 3 is attached to the one end connecting strip portion 4A. By molding the part except the root into a state where it is embedded,
An engaged portion 5B that engages with the other end connecting strip portion 4B in its thickness direction, with the portion of the one end connecting strip portion 4A excluding the root portion serving as an engaging piece 5A.
and an engaged portion 6B that engages with the tip portion 6A in its longitudinal direction and width direction, and an engaged portion 6B that engages with the hole 8A in its longitudinal direction and width direction. The integral connecting portion 4 of these connecting band plate portions 4A and 4B is configured to have the same shape and size as the band-like connecting plate portion 2. Insulating sleeve band feeding holes 9 are formed in each of the band-shaped connecting plate portions 2 and the integral connection portion 4, respectively.

Incidentally, the long insulating sleeve band may have an insulating sleeve 1' having a structure as shown in FIG. 9 or having an insulating sleeve 1'' having a structure as shown in FIG. 10.

The insulating sleeve 1' shown in Fig. 9 is a cylindrical member for crimping and connecting two electric wire ends B, B.
It consists of a large-diameter cylinder part 1B' into which two electric wire ends B and B can be inserted from the same direction is connected to the open end side of a small-diameter cylinder part 1A' with a bottom into which A' can be inserted and held. , the insulating sleeve 1'' shown in FIG. 10 has two electric wire ends at both ends of a small diameter cylindrical part 1A'' into which a cylinder member A'' for crimping and connecting the two electric wire ends B and B can be inserted and held. It consists of large diameter cylindrical parts 1B'', 1B'' that can be inserted from opposite directions, and both insulating sleeves 1', 1'' are connected to the small diameter cylindrical part 1.
By applying external mechanical force to A′, 1A″ and crushing the small diameter cylindrical portions 1A′, 1A″, the cylindrical member
This is to fix and hold the wire ends A', A'' and both wire ends B, B, etc. in an electrically connected state.

FIG. 11 shows another embodiment, in which a hole 8A is provided in the one-end connecting strip portion 4A.
Instead, the protrusion 8A' is integrally formed.

FIG. 12 shows another embodiment, in which a feeding protrusion 9' instead of a feeding hole 9 is provided in the integral connection part 4 of the band-like connecting plate part 2 and the connecting band plate parts 4a, 4b.
is formed.

In summary, the elongated insulating sleeve band for electrical connectors according to the present invention includes the integral connecting portion 4 of the connecting band plate portions 4A and 4B, and the band-like connecting plate portion 2. , 1 over its entire width.
It is also characterized by being thinner than other parts of the band-shaped connecting plate part 2.

That is, in order to ensure a reliable and strong connection between the unit insulating sleeve bands 3, the integral connecting portions 4 and the band-like connecting plate portions 2 are made thick. 4 and the band-like connecting plate part 2 at the root part to the sleeve 1 are made thin, so that when the integral connecting part 4 and the band-like connecting plate part 2 are separated from the sleeve 1 at the root part to the sleeve 1. It is possible to easily cut the long insulating sleeve, and also to easily bend the integral connecting part 4 and the band-like connecting plate part 2 to the sleeve 1 using this thin root part as a breaking line. By being flexible, it has become possible to advantageously roll up and store the long insulating sleeve band that has become a product, making it convenient to store and handle during continuous crimping work.

[Brief explanation of the drawing]

The drawings show an embodiment of the elongated insulating sleeve band for an electrical connector according to the present invention, and FIGS. 1A and 2B are longitudinal cross-sectional views showing the insulating sleeve in a state before being crushed and in a fixed state, and FIG. 2 is a main part. Figure 3 is a side view of the main parts, Figure 4 is a side view showing the manufacturing procedure, Figure 5 is a vertical side view of the mold, Figure 6 is a perspective view of the main parts, Figure 7 is a side view of the main parts.
The figure is a cross-sectional plan view of the main part, FIG. 8 is a sectional view taken along the line of FIG. 7, FIGS. 9 to 12 show different embodiments, and FIGS. A vertical sectional view, FIG. 11 is a partially cutaway side view of the main part, and FIG. 12 is a perspective view of the main part. 1...Synthetic resin insulating sleeve, 2...Synthetic resin band-shaped connecting plate part, 3 ...Insulating sleeve band, 4
A, 4B... Connecting band plate part.

Claims (1)

[Claims] 1. A plurality of synthetic resin insulating sleeves 1 for fixing and holding electrical connector elements in a state where they are inserted are held in a position with the mutual orientation of each element insertion port in the same direction, and are spaced apart from each other. The insulating sleeve band 3 of unit length is formed by molding to be integrally connected with the band-like connecting plate part 2 made of fabric, and the connecting band plate part 4A is integrally projected from one end side in the longitudinal direction of the insulating sleeve band 3 . and a connecting band plate portion 4B integrally protruding from the other end in the longitudinal direction of another insulating sleeve band 3 formed in the same manner as the insulating sleeve band 3 , when molding the latter insulating sleeve band 3 . A long insulating sleeve band for an electrical connector is constructed by integrally connecting both insulating sleeve bands 3 , 3 in their longitudinal direction by joining, and the band-shaped insulating sleeve band located between adjacent sleeves 1, 1 is a long insulating sleeve band for an electrical connector. Connecting plate portion 2 and both connecting strip portions 4
The wall thickness of the base portion of the integral connecting portion 4 of A, 4B to each sleeve 1, 1 is determined by adjusting the wall thickness of the base portion of the integral connecting portion 4 of A, 4B to each of the sleeves 1, 1, over the entire width of the insulating sleeve band in the width direction of the band-like connecting plate portion 2 and the integral connecting portion 4. A long insulating sleeve band for an electrical connector, characterized in that the wall thickness of the long insulating sleeve band is smaller than that of other parts.