Durable connecting device for electric contact shell and inclined coil spring

Abstract

The utility model discloses a durable connecting device for an electric contact shell and a canted coil spring, which comprises a connecting device body, the electric contact shell is arranged on the connecting device body, the two ends of the electric contact shell are provided with inlet and outlet ports, and the canted coil spring is arranged in an electric contact shell V-shaped groove in the electric contact shell. The inclined included angle alpha between the inclined coil spring and the vertical direction ranges from 10 degrees to 30 degrees, an electric contact is arranged in the electric contact shell, electrodes are arranged at two positions on the electric contact, the inclined coil spring is installed in an electric contact shell V-shaped groove in the electric contact shell, one side of the inclined coil spring makes contact with the side wall of the electric contact shell V-shaped groove, and the other side of the inclined coil spring makes contact with the side wall of the electric contact shell V-shaped groove. The connecting device can transmit current in a small space, each circle is an electrically independent bearing body, meanwhile, the spring with a constant pressure curve is arranged, electric connection is achieved through pure mechanical contact, and reliability and stability are achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, specifically a connection device between a durable electrical contact housing and a shear spring. Background Technology

[0002] An implantable pacemaker is an electronic therapeutic device that is implanted permanently in a patient's body. It delivers electrical pulses powered by a battery via a pulse generator. These pulses are conducted through electrode leads to stimulate the myocardium in contact with the electrodes, causing the heart to beat and contract, thereby treating cardiac dysfunction caused by certain arrhythmias. The pulse generator circuit of a pacemaker mainly consists of a circuit module, a battery, electrical contacts, and an included inclined coil spring as the electrical contact element.

[0003] Medical devices have strict requirements on the dimensional accuracy of circuit components. The inclined coil spring needs to be machined separately and then installed inside the electrical contact housing. Furthermore, the outer diameter and wire diameter of the inclined coil spring are relatively small, typically only 1–4 mm and 0.02–0.2 mm respectively, making it prone to plastic deformation under significant external forces. The outer diameter of the inclined coil spring is designed to be larger than the inner diameter of the electrical contact housing, using an interference fit to ensure tight contact and reliable conductivity. Therefore, the initial insertion force of the electrode must be as small as possible to prevent damage to the inclined coil spring.

[0004] The drawback of vertical inclined coil springs is:

[0005] 1. The initial insertion force of the electrode is large, which poses a risk of damaging the inclined coil spring.

[0006] 2. The reliability of the product cannot be effectively and stably controlled.

[0007] Therefore, there is an urgent need for an improved technology to solve this problem in the existing technology. Utility Model Content

[0008] The purpose of this utility model is to provide a connecting device body with an electrical contact housing, inlet and outlet ports at both ends of the electrical contact housing, and a slanted coil spring inside the V-shaped groove of the electrical contact housing. The slanted coil spring has an inclination angle α between the slanted coil spring and the vertical direction ranging from 10° to 30°. The electrical contact housing contains electrical contacts with electrodes at two positions. The slanted coil spring is inserted into the V-shaped groove of the electrical contact housing, with one side of the slanted coil spring contacting the side wall of the V-shaped groove. This connecting device can transmit current in a small space. Each coil is an electrically independent carrier and has a constant pressure curve. The electrical connection is achieved through pure mechanical contact. This reliable, stable, and durable connecting device of the electrical contact housing and the slanted coil spring solves the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a durable electrical contact housing and a slanted coil spring connection device, comprising a connection device body, an electrical contact housing on the connection device body, inlet and outlet ports at both ends of the electrical contact housing, an electrical contact housing V-groove inside the electrical contact housing, and a slanted coil spring inside the electrical contact housing V-groove.

[0010] The electrical contact housing has an electrical contact inside, which is installed in conjunction with the electrical contact housing. The electrical contact has an electrode.

[0011] Preferably, the angle of the groove inside the V-shaped groove of the electrical contact housing is between 120° and 140°.

[0012] Preferably, after heat treatment to remove internal stress, the angle α at which the inclined coil spring becomes inclined is 10°-30°, and the inclined coil spring contacts the V-groove of the electrical contact housing on one side.

[0013] Preferably, one end of the electrical contact is a hemispherical round head.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) When electrode 1 is initially inserted into the electrical contact, the inclined coil spring in the inclined state plays the role of guiding the electrode. As the electrode continues to be pushed, the V-shaped groove of the electrical contact shell forces the inclined coil spring to rotate at the tilt angle and deform elastically, thus dispersing the insertion force.

[0016] (2) The connection device can transmit current in a small space. Each coil is an electrically independent carrier and has a spring with a constant pressure curve. The electrical connection is achieved through pure mechanical contact, which is reliable and stable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the connecting device of this utility model;

[0018] Figure 2 This is a cross-sectional view of the electrical contact and the electrical contact housing of this utility model being installed together.

[0019] Figure 3 This is a schematic diagram of the electrical contact of this utility model being inserted into the electrical contact housing;

[0020] Figure 4 This is a schematic diagram of the inclined coil spring in its natural state.

[0021] Figure 5 This is a sectional view of the spring shaping cavity in the front mold of a heat treatment mold.

[0022] Figure 6This is a sectional view of the spring shaping cavity in the rear mold of a heat treatment mold.

[0023] Figure 7 This is a schematic diagram of a tilted coil spring.

[0024] Figure 8 A cross-sectional view of a shear spring installed inside the electrical contact housing;

[0025] Figure 9 A schematic diagram of the inclined coil spring before the electrode is inserted into the electrical contact.

[0026] In the diagram: 1. Electrode; 2. Electrical contact housing; 3. V-groove of electrical contact housing; 4. Inclined spring; 5. Connecting device body; 6. Electrical contact. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-9 This utility model provides a technical solution: a durable electrical contact housing and a slanted spring connection device, including a connection device body 5, an electrical contact housing 2 on the connection device body 5, inlet and outlet ports at both ends of the electrical contact housing 2, an electrical contact housing V-groove 3 inside the electrical contact housing 2, and a slanted spring 4 inside the electrical contact housing V-groove 3. After heat treatment to remove the internal stress of the slanted spring 4, the slanted spring 4 becomes inclined at an angle α of 10°-30°, and the slanted spring 4 contacts the electrical contact housing V-groove 3 on one side.

[0029] The electric contact housing 2 has an electric contact 6 inside. The electric contact 6 is installed in conjunction with the electric contact housing 2. The electric contact 6 has an electrode 1. One end of the electric contact 6 is a hemispherical head. The angle of the groove inside the V-groove 3 of the electric contact housing is between 120° and 140°.

[0030] When electrode 1 is initially inserted into electrical contact 6, the inclined coil spring 4 acts as a guide for the electrode. As electrode 1 continues to be pushed in, the V-groove 3 of the electrical contact housing 2 forces the inclined coil spring 4 to rotate at the tilt angle and deform elastically, thus dispersing the insertion force.

[0031] Implementation process:

[0032] The inclined coil spring 4 welded on the main body 5 of the connecting device is in a vertical state. It is pressed by the spring shaping cavity on the front mold of the heat treatment mold and the stress inside the inclined coil spring is removed by heat treatment, forcing the inclined coil spring 4 to become inclined. The angle α between the inclined coil spring 4 and the vertical direction is between 10° and 30°. The inclined coil spring 4 is installed into the V-groove 3 of the electrical contact housing on the electrical contact housing 2 by the assembly tool. At this time, the inclined coil spring 4 and the V-groove 3 of the electrical contact housing are in contact on one side.

[0033] A schematic diagram of the electrode insertion of the electrode body 5 into the electrical contact 6 and the elastic deformation of the inclined coil spring 4. When the electrode 1 is initially inserted into the electrical contact, the inclined coil spring 4, in its tilted state, acts as a guide for the electrode. As the electrode 1 continues to be pushed in, the V-shaped groove 3 of the electrical contact housing 2 forces the inclined coil spring 4 to rotate at its tilt angle and elastically deform, dispersing the insertion force until the electrode 1 is fully inserted into the electrical contact 6. The contour arc surface of the inclined coil spring 4 maintains contact with the inner wall of the V-shaped groove 3 of the electrical contact housing on both sides.

[0034] The connecting device body 5 can transmit current in a small space. Each of its coils is an electrically independent carrier, and it also has a spring with a constant pressure curve. The electrical connection is achieved through pure mechanical contact, which is reliable and stable.

[0035] This connection device can transmit current in a small space. Each coil is an electrically independent carrier, and it also has a spring with a constant pressure curve. The electrical connection is achieved through pure mechanical contact, which is reliable and stable.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A durable electrical contact housing and a shear spring connection device, comprising a connection device body (5), characterized in that: The main body (5) of the connecting device is provided with an electric contact housing (2), and both ends of the electric contact housing (2) are provided with inlet and outlet ports. The inside of the electric contact housing (2) is provided with an electric contact housing V-groove (3), and the inside of the electric contact housing V-groove (3) is provided with a slanted coil spring (4). The electric contact housing (2) is provided with an electric contact (6) inside. The electric contact (6) is installed in conjunction with the electric contact housing (2). The electric contact (6) is provided with an electrode (1).

2. The durable electrical contact housing and inclined coil spring connection device according to claim 1, characterized in that: The angle range of the internal groove of the V-shaped groove (3) of the electrical contact housing is between 120° and 140°.

3. The durable electrical contact housing and inclined coil spring connection device according to claim 1, characterized in that: After heat treatment to remove the internal stress of the inclined coil spring (4), the inclined coil spring (4) becomes inclined at an angle α of 10°-30°, and the inclined coil spring (4) contacts the V-groove (3) of the electrical contact housing on one side.

4. The connection device between a durable electrical contact housing and a shear spring according to claim 1, characterized in that: One end of the electrical contact (6) is a hemispherical round head.

Images