Disclosure of Invention
The invention mainly aims to provide a plug and a lamp, aiming at reducing the risk of damage to the inner end of a plug connector, improving the safety of the plug and prolonging the service life of the plug.
To achieve the above object, the present invention proposes a plug comprising:
the insulating shell is formed by welding a first shell and a second shell through ultrasonic waves, and an installation cavity and a wire passing hole communicated with the installation cavity are formed in the periphery of the first shell and the second shell;
a plug-in unit inserted into the mounting cavity and extending outwards, the plug-in unit having terminals, and
The connecting wire is electrically connected with the terminal and led out outwards through the wire passing hole, the hole wall of the wire passing hole is provided with a limiting part, and the limiting part is propped against the outer wall of the connecting wire so as to limit the connecting wire to move along the first direction.
Optionally, the via hole is provided with at least two protrusions arranged at intervals on two hole walls opposite to each other in the first direction, so as to form the limiting part.
Optionally, the end surface of the limiting part, which is abutted to the connecting wire, is in a circular arc shape.
Optionally, the terminal and the connecting wire are both movable along a second direction, and the first direction is perpendicular to the second direction.
Optionally, the two hole walls of the via hole in the second direction have a gap with the outer wall of the connecting wire, so that the connecting wire is movable in the second direction.
Optionally, the plug has a first surface and a second surface opposite in the first direction, the first surface of the plug being ultrasonically welded to the insulating housing to limit movement of the plug in the first direction, the second surface of the plug being disposed against the insulating housing portion.
Optionally, welding ribs are distributed on the first shell and/or the second shell along the connecting surface.
Optionally, the first housing is provided with a positioning column, a positioning hole is formed in the position, corresponding to the first housing, of the second housing, and the positioning column is inserted into the positioning hole.
Optionally, the first housing and the second housing are injection molded parts.
In order to achieve the above object, the present invention further provides a lamp, including the plug as described above, the plug including:
the insulating shell is formed by welding a first shell and a second shell through ultrasonic waves, and an installation cavity and a wire passing hole communicated with the installation cavity are formed in the periphery of the first shell and the second shell;
a plug-in unit inserted into the mounting cavity and extending outwards, the plug-in unit having terminals, and
The connecting wire is electrically connected with the terminal and led out outwards through the wire passing hole, the hole wall of the wire passing hole is provided with a limiting part, and the limiting part is propped against the outer wall of the connecting wire so as to limit the connecting wire to move along the first direction.
The plug comprises an insulating shell, a plug connector and a connecting wire, wherein the insulating shell is formed by welding a first shell and a second shell through ultrasonic waves, a mounting cavity and a wire passing hole communicated with the mounting cavity are formed in the periphery of the first shell and the second shell, the plug connector is inserted into the mounting cavity and extends outwards, the plug connector is provided with a terminal, the connecting wire is electrically connected with the terminal and led out outwards through the wire passing hole, a limiting part is arranged on the wall of the wire passing hole and abuts against the outer wall of the connecting wire to limit the connecting wire to move along the first direction. Because the terminal in the plug connector is limited to move along the first direction and can move along the second direction, the limit fixation of the terminal in the second direction is relieved, the terminal is prevented from being spread, the risk of damage to the terminal is effectively reduced, the safety of the plug is improved, and the service life of the plug is prolonged.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present invention), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a plug which can be suitable for devices such as lamps and the like, and is not limited in this regard.
Referring to fig. 1 to 4, in an embodiment of the present invention, the plug includes an insulating housing 10, a plug connector 20 and a connection wire 30, wherein the insulating housing 10 is formed by welding a first housing 11 and a second housing 12 by ultrasonic waves, the first housing 11 and the second housing 12 are surrounded to form a mounting cavity 10a and a wire passing hole 10b communicated with the mounting cavity 10a, the plug connector 20 is inserted into the mounting cavity 10a and extends outwards, the plug connector 20 is provided with a terminal, the connection wire 30 is electrically connected with the terminal of the plug connector 20 and led outwards through the wire passing hole 10b, and a hole wall of the wire passing hole 10b is provided with a limit part, and the limit part abuts against an outer wall of the connection wire 30 to limit the movement of the connection wire 30 along a first direction.
Referring to fig. 2, in this embodiment, the first housing 11 and the second housing 12 may be made of insulating materials such as hard plastic, the first housing 11 and the second housing 12 may be injection molded parts made by injection molding, the first housing 11 and the second housing 12 may be fixed by ultrasonic welding, and welding ribs are disposed on the first housing 11 and/or the second housing 12 along the connecting surface so as to facilitate ultrasonic welding. Under the condition that no waterproof requirement exists, a plurality of welding ribs can be arranged, and the plurality of welding ribs can be arranged on the connecting surface of the shell at intervals.
In this embodiment, the first housing 11 may be provided with a positioning column, and the position of the second housing 12 corresponding to the first housing 11 may be provided with a positioning hole adapted thereto, where the positioning column is inserted into the positioning hole, so as to realize the pre-positioning of the first housing 11 and the second housing 12 during welding, so as to facilitate ultrasonic welding, thereby improving the reliability of the housing assembly 10.
Ultrasonic welding is to transfer a high-frequency vibration wave to the surfaces of two objects to be welded, and in this region, the surfaces of the two objects are rubbed against each other by vibration energy to form fusion between molecular layers. The use of ultrasonic welding, rather than encapsulation, allows for a free space within the housing.
Of course, in some other embodiments, the insulating housing 10 may be assembled by using more components, which is not limited herein.
In this embodiment, the terminal of the connector 20 and the connecting wire 30 can move along the second direction, and the first direction is perpendicular to the second direction.
It should be noted that, as shown in fig. 4, the first direction may be a height direction of the connector 20, i.e., a Z-axis direction in the drawing, and the second direction may be a width direction of the connector 20, i.e., a Y-axis direction in the drawing.
In this embodiment, the connector 20 may be a TYCO connector or other connectors 20 with terminals therein, which is not limited herein.
In this embodiment, the connection wire 30 is used for transmitting an electrical signal, and may include an electrical conductor and an insulating layer coated outside the electrical conductor, where the electrical conductor is electrically connected with the terminal of the plug 20, and the insulating layer abuts against the limiting portion of the hole wall at the via hole 10b to be limited to move along the first direction, so that the movement of the connection wire 30 can be avoided to drive the plug 20 and the terminal thereof to move along the first direction.
The limiting portion of the wire passing hole 10b may be a bar-shaped protrusion or a circular bump, and the end surface of the limiting portion, which abuts against the connecting wire 30, may be in a circular arc shape, so as to avoid the connecting wire 30 from generating an indentation and ensure that the pressure test can be passed. Preferably, the radius R of the arc may be 1.5mm.
In the technical scheme of the invention, the plug comprises an insulating shell 10, a plug connector 20 and a connecting wire 30, wherein the insulating shell 10 is formed by welding a first shell 11 and a second shell 12 through ultrasonic waves, a mounting cavity 10a and a wire passing hole 10b communicated with the mounting cavity 10a are formed by surrounding the first shell 11 and the second shell 12, the plug connector 20 is inserted into the mounting cavity 10a and extends outwards, the plug connector 20 is provided with a terminal, the connecting wire 30 is electrically connected with the terminal of the plug connector 20 and is led out outwards through the wire passing hole 10b, the wall of the wire passing hole 10b is provided with a limiting part, the limiting part abuts against the outer wall of the connecting wire 30 to limit the connecting wire 30 to move along a first direction, the terminal of the plug connector 20 and the connecting wire 30 can move along a second direction, and the first direction is perpendicular to the second direction. Because the terminal in the plug 20 can move along the second direction, the limit fixation of the terminal in the second direction is relieved, the terminal is prevented from being spread, the risk of damaging the terminal is effectively reduced, the safety of the plug is improved, and the service life of the plug is prolonged.
In addition, in an embodiment, the plug 20 has a first surface and a second surface opposite to each other in the first direction, and the first surface of the plug 20 and the insulating housing 10 may be fixed by ultrasonic welding to limit the plug 20 from moving along the first direction, and the second surface of the plug 20 is partially disposed against the insulating housing 10.
Because the shell of the plug connector 20 is fixed with the insulating shell 10 by ultrasonic welding, and the plug connector 20 is fixed in the installation cavity 10a of the insulating shell 10, the plug connector 20 and the terminals therein cannot move along the third direction, the tension requirement of the plug connector 20 can be met, and meanwhile, the terminals of the plug connector 20 can move along the second direction, so that the adaptability of the plug connector 20 in plugging is improved. The third direction may be a length direction of the connector 20.
In addition, during the production of the product, it was found that the case applies energy to the wire during ultrasonic welding, and that excessive energy would damage the outer skin of the connecting wire 30, create a deeper indentation, and affect the tensile strength of the connecting wire 30.
In this regard, the present application also improves the mounting structure of the connecting wire 30. Referring to fig. 2, in an embodiment, at least two protrusions 101 disposed at intervals are protruded on two opposite hole walls of the via hole 10b in the first direction, so as to form a limiting portion. In this way, the stability of the connecting wires 30 and the connectors 20 connected thereto in the height direction can be further improved.
Further, in order to enable the terminal to move in the second direction, referring to fig. 2 to 4, the two hole walls of the via hole 10b in the second direction have a gap 101a with the outer wall of the connection wire 30, that is, the connection wire 30 is in clearance fit with the insulating housing 10 at the via hole 10, so that the connection wire 30 is movable in the second direction to further avoid the terminal from being spread, thereby reducing the risk of damaging the terminal, improving the safety of the plug, and prolonging the service life of the plug
In one embodiment, the connector 20 is secured to the insulating housing 10 by ultrasonic welding and forms three welds. In this way, the single-point connection failure of the plug connector 20 and the insulating housing 10 can be avoided, and the welding stability of the plug connector 20 and the insulating housing 10 is further improved.
In this embodiment, the connection lines of the three welding points may be arranged in a triangle shape, so that the connection between the plug connector 20 and the insulating housing 10 is more reliable, single-point and unidirectional connection failure is avoided, and the connection stability of the plug connector 20 in the height direction is greatly improved.
The invention also proposes a lamp comprising a plug, the specific structure of which refers to the above embodiment, and since the lamp comprises all the solutions of all the embodiments of the plug, it has at least the same technical effects as the plug, not described herein.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.