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EP-4300716-B1 - PLUGS AND LAMPS

EP4300716B1EP 4300716 B1EP4300716 B1EP 4300716B1EP-4300716-B1

Inventors

  • CHEN, DONG
  • XU, KAI
  • LIN, WANJIONG

Dates

Publication Date
20260506
Application Date
20230621

Claims (7)

  1. A plug comprising: an insulating housing (10) formed by ultrasonic welding of a first housing (11) and a second housing (12), and the first housing (11) and the second housing (12) enclosing an installation cavity (10a) and a wire passing hole (10b) communicating with the installation cavity (10a); a plug connector (20), which is inserted into the installation cavity (10a) and protruded outward, and the plug connector (20) is provided with terminals; and a connecting wire (30) is electrically connected to the terminal and drawn out through the wire passing hole (10b), and a hole wall of the wire passing hole (10b) is provided with a limiting part, and the limiting part is abutting against outer walls of the connecting wires (30) to limit the connecting wires (30) from moving along a first direction (Z) characterized in that the wire passing hole (10b) is provided with at least two protrusions (101) spaced apart on the two hole walls opposite each other in said first direction (Z) to form said limiting part, the end surface of the limiting part abutting against the connecting wire (30) is arranged in an arc shape, and wherein both the terminal and the connection wire (30) can move along a second direction (Y), and the first direction (Z) is perpendicular to the second direction (Y).
  2. The plug according to claim 1, characterized in that there is a gap (101a) between the two hole walls of the wire passing hole (10b) in the second direction and the outer wall of the connecting wire (30), so that the connecting wire (30) is movable in the second direction.
  3. The plug according to claim 1, characterized in that , the connector (20) has a first surface and a second surface opposite to each other in the first direction, and the first surface of the connector (20) is ultrasonically welded to the insulating housing (10) to limit the movement of the plug (20) along the first direction , and the second surface of the plug (20) being connected to the insulating housing (10) is only partially abutting each other.
  4. The plug according to claim 1, characterized in that welding ribs are distributed along the connection surface on the first housing (11) and/or the second housing (12).
  5. The plug according to claim 4, characterized in that , the first housing (11) is provided with a positioning post, and the second housing (12) is provided with a positioning hole corresponding to the position post of the first housing (11), and the positioning post being inserted in the positioning hole.
  6. The plug according to claim 4, characterized in that , both the first housing (11) and the second housing (12) are injection molded parts.
  7. A lamp, characterized by comprising the plug according to any one of the claims 1-6.

Description

technical field The invention relates to the technical field of connectors, in particular to a plug and a lamp. Background technique The plug of the lamp includes a housing, a connector and connecting wires, and the connector is provided with one or more terminals inside. Among them, the connector part has relevant safety requirements, and the connector and terminals need to meet the tension requirements. The documents US 20170207580A1 and CN 14243364A show different design of plug connector assemblies to meet tensile requirements. For small-sized plugs, due to their few components and simple structure, in order to meet the tensile requirements, the commonly used method is to encapsulate the outer housing of the product. although this can improve the tensile capacity the use verification found that there is a certain risk in this rubberized structure. The rubberized housing will make the terminals inside the connector fixed. However After a long time of use, the terminals in the connector will be stretched and damaged. As a result, the contact resistance of the terminal increases, and in severe cases , the terminal may catch fire. Contents of the invention The present invention is to provide a plug and a lamp, aiming at reducing the risk of terminal damage in the plug connector, so as to improve the safety of the plug and prolong the service life of the plug. In order to achieve the above object, the present invention proposes a plug, which includes: The insulating housing is formed by ultrasonic welding of the first housing and the second housing, and the first housing and the second housing are surrounded to form an installation cavity and a wire passing hole communicating with the installation cavity;a plug-in piece / plug connector inserted into the installation cavity and protruding outward, the plug-in piece is provided with terminals; andthe connecting wire is electrically connected to the terminal and drawn out through the wire passing hole, and the hole wall of the wire passing hole is provided with a limiting part, and the limiting part is abutting against the outer wall of the connecting wire to limit the connecting wire from moving along a first direction. Optionally , at least two protrusions arranged at intervals protrude from the two hole walls opposite to each other in the first direction of the wire passing hole to form the limiting part. Optionally, the end surface of the limiting part abutting against the connecting wire is arranged in an arc/circular/rounded shape. Optionally, both the terminal and the connecting wire can move along a second direction, and the first direction is perpendicular to the second direction. Optionally, the wire passing hole has a gap between two hole walls in the second direction and an outer wall of the connecting wire, so that the connecting wire can move in the second direction. Optionally, the connector has a first surface and a second surface opposite to each other in the first direction, and the first surface of the connector is ultrasonically welded and fixed to the insulating housing, so as to limit the that the plug connector moves along the first direction, and the second surface of the plug connector abuts against the insulating housing part. Optionally, welding ribs are distributed along the connection surface on the first housing and/or the second housing. Optionally, the first housing is provided with a positioning post, the second housing is provided with a positioning hole at a position corresponding to the positioning post of the first housing, and the positioning post is inserted into the positioning hole. Optionally, both the first housing and the second housing are injection molded parts. In order to achieve the above object, the present invention also proposes a lamp, including the above-mentioned plug, and the plug includes: The insulating housing is formed by ultrasonic welding of the first housing and the second housing, and the first housing and the second housing are surrounded to form an installation cavity and a wire passing hole communicating with the installation cavity;a plug-in piece inserted into the installation cavity and protruding outward, the plug-in piece is provided with terminals; andthe connecting wire is electrically connected to the terminal and drawn out through the wire passing hole, and the hole wall of the wire passing hole is provided with a limiting part, and the limiting part is abutting against the outer wall of the connecting wire to limit the connecting wire moving along a first direction. In the technical solution of the present invention, the plug includes an insulating housing, a connector and a connecting wire; the insulating housing is formed by ultrasonic welding of the first housing and the second housing, and the first housing and the second housing are surrounded to form an installation cavity and a wire passing hole connected to the installation cavity; the connector is inserted in the installation