JPH06237907A - Connector spring for electrocardiographic measuring instrument - Google Patents

Abstract

PURPOSE:To provide a connector rich in durability without the danger of separating a washer and a rubber at the time of detachment from an electrode by forming a circular rib around the washer so as to press the rib into a connector side rubber. CONSTITUTION:On the side of a main body 1 of a spring, an electrode fitting recessed part 3 integrated with a wire spring 2 is formed, and the peripheral edge is raised. A ring-shaped rib 5 is formed around a washer 4 for which the main body 1 of the spring is caulked to the lower face. In this case, the rib 5 is ring-shaped but it is also available to form simple projections around the washer 4. Concerning an electrode 6, a head part 7 fitted into the recessed part 3 at the main body 1 of the spring is formed. Since the main body 1 of the spring is inmolded by an injection system, the rib 5 is pressed into a rubber 8 and they are not separated even with normal force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector spring for holding a hook type electrode of an electrocardiograph.

[0002]

2. Description of the Related Art As shown in FIG. 2 of Japanese Utility Model Publication No. 3-44172, a conventional spring is constructed by caulking a spring main body 1 in which a wire spring 4 is incorporated in a washer 5, and rubber 9 It is a structure covered with.

[0003]

Therefore, if the electrode is repeatedly attached to and detached from the electrode several times, the rubber and the spring are separated from each other, and the life of the connector is very short. The cause of the peeling is that the spring and the rubber are usually formed by an injection method, so that the adhesive strength between the rubber and the spring is almost zero. Further, when the connector is separated from the electrode, there is a tendency to pull the lead wire side of the rubber as it is, and when the connector is separated in this way, it just turns like a spring. For this reason,
Furthermore, it facilitates easy separation.

An object of the present invention is to provide a spring which is hard to separate in a connector for electrocardiograph.

[0005]

The structure of the spring according to the present invention is as follows.

1. Connector spring for electrocardiographs, which is formed by forming a circular rib around the washer.

2. Connector spring for electrocardiographs, which is formed by forming a protrusion around the washer.

[0008]

Since the connector is manufactured by the injection method, the ring-shaped brim or projection formed on the washer side bites the meat of the rubber and cannot be separated by some force.

[0009]

EXAMPLE FIG. 1 shows an example of the present invention. Reference numeral 1 denotes a spring body, and an electrode fitting concave portion 3 incorporating a wire spring 2 is formed on the spring body 1 side, and a peripheral edge thereof is raised. Reference numeral 4 denotes a washer in which the spring body 1 is caulked to the lower surface, and a ring-shaped rib 5 is formed around the washer 4. Although the rib 5 in the embodiment has a ring shape, a simple protrusion may be formed around the washer 4.

FIG. 2 shows an electrode, and this electrode 6 has a structure in which a head portion 7 that fits in the recess 3 of the spring body 1 is formed.

3 and 4 show a connector in which a spring having the structure shown in FIG. 1 is in-molded with a rubber 8 by an injection method, and 9 is a terminal and 10 is a lead wire.

In the above structure, the rib 5 is embedded in the rubber 9 and cannot be separated by normal force.

[0013]

As described above, according to the present invention, ribs or protrusions are formed on the spring (washer) and the ribs or protrusions bite into the rubber on the connector side. There is no. Therefore, a highly durable connector can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of a spring according to the present invention.

FIG. 2 is an explanatory diagram of electrodes.

FIG. 3 is an explanatory view of a connector in which a spring is in-molded with rubber.

FIG. 4 is a bottom view of the connector.

[Explanation of symbols]

1 Spring Body 2 Wire Spring 3 Recess 4 Washer 5 Rib 6 Electrode 7 Head 8 Rubber 9 Terminal
10 lead wire

Claims (2)

[Claims] 1. A connector spring for an electrocardiograph, comprising a circular rib formed around a washer. 2. A connector spring for an electrocardiographic instrument, which is formed by forming a protrusion around a washer.