A terminal is mounted on a mounting surface having a stud bolt standing on the mounting surface. The terminal having: a contact portion configured to contact with the mounting surface; an insertion portion allowing the stud bolt to be inserted to the insertion portion; and an elastic portion connected to the contact portion and extending in a direction to leave the mounting surface. The elastic portion is configured to urge the contact portion elastically toward the mounting surface when he terminal touches a fixture engaged with the stud bolt.

In electrocardiography (ECG) system, a patient cable connecting one or more electrodes to a processing device for processing ECG signals may include one or more electrode connectors mechanically keyed to respective electrodes and/or a device connector mechanically and/or electronically keyed to a cable connector of the processing device. In some embodiments, keying between the cable and electrode is achieved, for example, with an electrode including a hollow-post portion that defines a bore in conjunction with a post protruding from an arm of the electrode connector that is sized to fit within the bore.

In electrocardiography (ECG) system, a patient cable connecting one or more electrodes to a processing device for processing ECG signals may include one or more electrode connectors mechanically keyed to respective electrodes and/or a device connector mechanically and/or electronically keyed to a cable connector of the processing device. In some embodiments, keying between the cable and electrode is achieved, for example, with an electrode including a hollow-post portion that defines a bore in conjunction with a post protruding from an arm of the electrode connector that is sized to fit within the bore.

A seal housing for a cable lug comprising a cable entry extending in a longitudinal direction, and a dome extending in a transverse direction, transversely to the longitudinal direction, wherein the cable entry extends longitudinally towards the dome and terminates in the dome, the dome comprises a receptacle for the cable lug, and the dome comprises a transversely extending through channel which extends transversely, on both sides of the receptacle into a bottom region and a cover region, characterized in that the receptacle comprises latching means for mechanically receiving the cable lug.

A contact device includes a first contact housing extending along a longitudinal axis and a shielding-spring unit electrically and mechanically connected to the first contact housing. The shielding-spring unit contacts an electrically conductive housing of a system. The shielding-spring unit has a first shielding spring and a second shielding spring arranged in a rotated manner relative to the first shielding spring in a circumferential direction around the longitudinal axis. The first shielding spring and the second shielding spring engage one another and lie against one another in an axial direction.

A method for upgrading an automatic testing system includes electrically connecting at least one pogo pin attaching device to an expansion instrument and a pogo pin of a pogo pin interface of the automatic testing system wherein the pogo pin attaching device comprises at least one metal attaching member and at least one cable, each of said at least one cable having two opposite ends, a first end electrically connected to the metal attaching member and a second end electrically connected to the expansion instrument, and the metal attaching member attaches to the pogo pin. In response to operating the automatic testing system, electrically connecting the pogo pin to a subject so that a measurement path is established between the subject and the expansion instrument through the pogo pin attaching device, wherein the measurement path is configured to connect signals for upgrading the automatic testing system.

A method for upgrading an automatic testing system includes electrically connecting at least one pogo pin attaching device to an expansion instrument and a pogo pin of a pogo pin interface of the automatic testing system wherein the pogo pin attaching device comprises at least one metal attaching member and at least one cable, each of said at least one cable having two opposite ends, a first end electrically connected to the metal attaching member and a second end electrically connected to the expansion instrument, and the metal attaching member attaches to the pogo pin. In response to operating the automatic testing system, electrically connecting the pogo pin to a subject so that a measurement path is established between the subject and the expansion instrument through the pogo pin attaching device, wherein the measurement path is configured to connect signals for upgrading the automatic testing system.

A connection terminal for connecting a first conductor and a second conductor, the connection terminal including: a connection configured to be connected to the first conductor; an arc-shaped fitting that extends from the connection, and is configured to be fitted to, while being in surface contact with, a tubular outer circumferential surface of the second conductor over a half of the circumference thereof, with application of restoring force after elastic deformation; and a pair of extensions that extend from two ends, in a circumferential direction, of the arc-shaped fitting, and are curved to a side opposite to a side to which the arc-shaped fitting is curved.

An electrical connector comprise an insulating housing, a spring clip disposed in the insulating housing, and control pieces for opening the spring clip. The insulating housing comprises outer wall sections separately corresponding to wire inserting spaces defined inside the insulating housing. Each outer wall section at least partially extends into a gap formed by a corresponding control piece when the control pieces are switched to a closed state. Moving spaces are defined on an outside of two sides of each of the outer wall sections. The control pieces perform an opening operation and a closing operation in the moving spaces. When the control pieces are in an open state, the spring clip is observed along the moving spaces. Along a width direction of the spring clip, the spring clip is at least partially exposed in projections of the moving spaces along an up-down direction of the moving spaces.

An electrical connector comprise an insulating housing, a spring clip disposed in the insulating housing, and control pieces for opening the spring clip. The insulating housing comprises outer wall sections separately corresponding to wire inserting spaces defined inside the insulating housing. Each outer wall section at least partially extends into a gap formed by a corresponding control piece when the control pieces are switched to a closed state. Moving spaces are defined on an outside of two sides of each of the outer wall sections. The control pieces perform an opening operation and a closing operation in the moving spaces. When the control pieces are in an open state, the spring clip is observed along the moving spaces. Along a width direction of the spring clip, the spring clip is at least partially exposed in projections of the moving spaces along an up-down direction of the moving spaces.