JPS6343730Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a clip-type connector, which reduces the number of parts and assembly man-hours by fixing an insulating material such as resin to a gourd-shaped spring member by, for example, molding. The purpose of the present invention is to provide a flexible clip-type connector.

A conventional clip-type connector is shown in FIG. In the figure, the clip-type connector 1 is
It has a pair of connector halves 2-1 and 2-2. As shown in FIGS. 2 and 3, the connector half 2-1 has a resin mold 4-1 on the outside of an electrode plate 3-1 having a U-shaped cross section.
Similarly, the connector half body 2-2 is also formed by bonding a resin mold 4-2 to an electrode plate 3-2 having a U-shaped cross section. The connector halves 2-1 and 2-2 are arranged facing each other, and are assembled by inserting a pin 5 into the overlapping portion of the electrode plates 3-1 and 3-2, and a torsion spring wound around the pin 5. 6, each is biased in the direction of the arrow in FIG. At this time, electrode plates 3-1, 3-2
The V-shaped recesses 3a formed on one side of the tips of the two face each other to form a hole 3b. Note that the electric wire 7 is soldered to the base of the electrode plate 3-1 of the connector half body 2-1.

In FIGS. 4A and 4B, 8 is a medical electrode, and an electrode shaft 9 (having a disk portion 9a, a shaft portion 9b, and a convex portion 9c)
An insulating ring 10 is fixed to the outer periphery of the body, and an electrode body 21 (conducted to the electrode shaft 9) is fixed to the lower surface, and the electrode body 21 is adhered to the human body.

Here, the base portions of the pair of connector halves 2-1 and 2-2 of the clip-type connector 1 are sandwiched and pressed, and the clip-type connector 1 is rotated close against the spring 5 to open the hole 3b wide. In this state, when the hole 3b of the clip 1 is aligned with the shaft portion 9b of the electrode element 8 as shown in FIG. The V-shaped recesses 3a of the electrode plates 3-1 and 3-2 press and hold the shaft portions 9b, respectively. Thus, the electrode element 8 is electrically connected to the electric wire 7 via the connector 1.

However, according to the above conventional example, the connector 1 includes electrode plates 3-1, 3-2, molds 4-1, 4-
2. It has many parts such as pins 5 and springs 6 (the electrode plates 3-1 and 3-2 have different shapes and the same is true for the molds 4-1 and 4-2), and has a large number of parts. has become more complex and larger, especially pin 5.
Also, it is difficult to assemble the spring 6, and the number of assembly steps is large, resulting in high cost.

The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings.

5A and 5B are a plan view and a side view, respectively, of an embodiment of the clip-type connector according to the present invention.

In the figure, a clip-type connector 11 has a spring 12 that is approximately in the shape of a gourd. The spring 12 has a large diameter hole 13 and a small diameter hole 14 between a pair of large diameter arm parts 12a and a pair of small diameter arm parts 12b, respectively, and further has a pair of narrowed parts 12c connecting both arm parts 12a and 12b. Connection portion 12d at the base of the diameter arm portion 12a
and a pair of outer bent portions 12e at the tips of the small diameter arm portions 12b. The large diameter hole 13 and the small diameter hole 14 are continuous, and the tips of the pair of small diameter arm portions 12b are separated.

Reference numeral 15 is an electric wire, and the core wire 16 is covered with a tube 17.
It is connected to the connecting portion 12d by soldering.

18 is a soft resin base mold, 19 and 20 are soft resin molds on both sides, and the spring 12 and the electric wire 15 connected thereto are placed in a predetermined mold, and resin is injection molded into the mold, respectively. They were molded at the same time. Base mold 1
8 is fixedly formed at the base of the spring 12 to cover the connecting portion 12d and the soldered portion of the exposed core wire 16, and further includes a pair of stopper portions 18 near the large diameter arm portion 12a.
a, and the tube protection part 1 that protects the tube 17.
8b are integrally formed. Both sides mold 19, 2
0 is formed on the outside of the small-diameter arm part 12b, locally fixed to a part of the large-diameter arm part 12a and the tip of the bent part 12e, respectively, and
8a has stopper portions 19a and 20a spaced apart from each other and facing each other.

Next, the operation of the clip type connector 11 will be explained. First, insert the large diameter hole 13 of the connector 11 into the fourth hole.
It is loosely fitted into the shaft portion 9b of the electrode element 8 shown in FIGS.
When the connector 11 is pulled in the direction of the arrow in FIG. 5A in this state, the shaft portion 9b relatively abuts against the narrowed portion 12c and is pushed apart with elastic deformation of the spring 12 to fit into the small diameter hole 14. Therefore, both sides mold 1
9 and 20 are respectively swung in the direction of the arrow in FIG. and electrically connected. Note that even if a force is applied to the connector 11 in an upward direction, that is, in a direction in which it comes off from the shaft portion 9b, the convex portion 9c prevents it from coming off. Further, excessive outward swinging of the molds 19 and 20 on both sides is prevented by the stopper portions 19a and 20a respectively coming into contact with the stopper portion 18a of the base mold 18, so that the spring 12 is not damaged.

Also, when removing the connector 11,
5A in the direction of the dotted line arrow, which is the opposite direction to that at the time of installation, and the shaft portion 9b passes from the small diameter hole 14 through the narrowed portion 12c to the large diameter hole 13 in the reverse procedure of the above installation. , and then pull out the connector 11 upward. Since the tube protection part 18b is made of a soft resin, it flexibly deforms following the bending deformation of the electric wire 15, so that the electric wire 15 is not damaged.

According to the above-mentioned connector 11, the number of parts is only the spring 12 and the three molds 18, 19, 20, and the structure is simple and compact.Moreover, the number of assembly steps is small, and the cost can be significantly reduced.

6A and 6B show other embodiments of the clip-type connector of the present invention, and the same parts as in FIGS. 5A and 5B are given the same reference numerals.

In the figure, the gourd-shaped spring 32 of the clip-type connector 31 similarly includes a large diameter arm portion 32a, a small diameter arm portion 32b, a narrowed portion 32c, a connecting portion 32d,
It has a bent part 32e, a large diameter hole 33, and a small diameter hole 34,
The core wire 16 of the electric wire 15 is soldered to the connecting portion 32d in advance. Since the large diameter hole 33 in this case is not used, the shape of the large diameter arm portion 32a is also different from the large diameter arm portion 12a of the connector 11, and the tube 17 of the electric wire 15 is provided with a soft resin protective tube 3.
5 is fitted in advance.

Numeral 36 is a hard resin base mold, and 37 and 38 are hard resin molds on both sides, which are integrally molded and fixed to the spring 32 and the electric wire 15 at the same time in the same manner as in the above case. The base mold 36 has stopper portions 36a on both sides, and the both side molds 37 and 38 have gripping portions 37a and 38a extending near the outside of the base mold 36, respectively.

Next, the operation of the clip type connector 31 will be explained. First, gripping portions 37a and 38a of the pair of molds 37 and 38 on both sides of the connector 31 are gripped, and a force F is applied in the direction of the arrow in FIG. The gripping portions 37a and 38a are brought into contact with the stopper portions 36a on both sides of the base mold 36, respectively. As a result, the small diameter hole 34 opens even larger than the state shown in FIG. 6A.

In this state, the large open small diameter hole 34 is inserted into the shaft portion 9 through the convex portion 9c in the axial direction of the electrode shaft 9 of the electrode element 8.
Loosely fit into b. Then, when the above-mentioned pressing force F is released, the spring 32 returns to its deformed state with the swinging return of the molds 37 and 38 on both sides, and the pair of small diameter arm portions 32
b presses and holds the shaft portion 9b, and is mechanically and electrically connected.

Moreover, when removing the connector 31, it is sufficient to press and swing the gripping parts 37a and 38a of the molds 37 and 38 on both sides again and pull it out upward. This connector 31 also has the same advantages as the connector 11 described above.

The reason why the molds 36, 37, and 38 of the connector 31 are made of hard resin, unlike the connector 11, is that since the molds 37, 38 on both sides are gripped and pressed, if they are made of soft resin, the gripping portions will be flexibly deformed. This is because the opening degree of the small diameter hole 34 cannot be obtained sufficiently. Further, the base mold 36 is made of the same material as the molds 37 and 38 on both sides for convenience of the injection molding process. Therefore, if a tube protection part is formed integrally with the base mold 36, this tube protection part will not be able to flexibly deform following the electric wire 15 and will damage the electric wire 15. It was established.

In each of the above embodiments, the base molds 18, 36,
The molds 19, 20, 37, and 38 on both sides are not necessarily integrally molded, but may be formed by adhering and fixing two insulating members made of resin or the like to the springs 12, 32 using an adhesive or the like.

Further, in each of the above embodiments, the springs 12 and 32 may have any cross-sectional shape such as circular, oval, or quadrangular.

As described above, according to the clip-type connector of the present invention, a base insulator and a pair of side insulators are integrally molded on a gourd-shaped spring member to which an electric wire is connected. Since other electrodes are connected to small-diameter holes, the connector only requires a spring member and three insulators, which reduces the number of parts, simplifies and downsizes the configuration, and reduces assembly man-hours. It has the advantage that the cost can be reduced significantly, and the cost can be further reduced by molding the three insulators integrally and simultaneously using resin or the like.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a conventional clip-type connector, Figs. 2 and 3 are longitudinal views taken along lines - and -, respectively, in Fig. 1, and Figs. 4A and B are views of an electrode element, respectively. A plan view and a side view, FIGS. 5A and 5B are a plan view and a side view, respectively, of one embodiment of the clip-type connector according to the present invention, and FIGS. 6A and B are plan views, respectively, of another embodiment of the above-mentioned connector. and a side view. 1, 11, 31... Clip type connector, 2-
1, 2-2... Connector half, 3-1, 3-2...
... Electrode plate, 4-1, 4-2 ... Resin mold, 5
...Pin, 6,12,32...Spring, 7,15...
...Electric wire, 8... Electrode element, 9... Electrode shaft, 9b...
Shaft portion, 10... Insulation ring, 12a, 32a...
Large diameter spring part, 12b, 32b...Small diameter spring part, 1
3, 33...Large diameter hole, 14,34...Small diameter hole, 1
8, 36...Base mold, 19, 20, 37,
38... Both sides mold, 21... Electrode body, 37
a, 38a...Gripping part.

Claims (1)

[Scope of utility model registration request] a generally gourd-shaped linear spring member that continuously defines a large-diameter hole and a small-diameter hole and has a separated tip on the small-diameter side; and an electric wire connected to the base of the large-diameter hole of the spring member; A base insulator is fixed to the base to cover the connection point, and both side insulators are fixed to substantially both outer sides of the small diameter hole of the spring member, and the spring member is not elastically deformed. A clip type connector configured such that another electrode terminal inserted into the small diameter hole is pressed and held by the spring member to be mechanically and electrically connected.