Plug and Lamp

Abstract

The present invention discloses a plug and a lamp. The plug includes an insulating housing, a plug-in component, and a connecting wire. The insulating housing is formed by ultrasonic welding of a first outer shell and a second outer shell. The first outer shell and the second outer shell enclose an installation cavity and a wire passing hole communicating with the installation cavity. The plug-in component is inserted into the installation cavity and extends outwards. The plug-in component is provided with terminals. The connecting wire is connected to the terminals and led outwards through the wire passing hole. And a limiting portion is provided on the hole wall of the wire passing hole, and the limiting portion abuts against the outer wall of the connecting wire to limit the connecting wire from moving in a first direction. The present invention improves the structure of the plug, effectively reduces the risk of damage to the terminals in the plug-in component, improves the safety of the plug, and also extends the service life of the plug.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and particularly to a plug and a lamp. Background Art

[0002] The plug of a lamp includes a housing, a plug-in part, and a connecting wire. Terminals are provided inside the plug-in part. Among them, there are relevant safety regulations requirements for the plug-in part, and the plug-in part and the terminals need to meet the tensile strength requirements.

[0003] For plugs with relatively small sizes, due to their few components and simple structures, in order to meet the tensile strength requirements, the currently common method is to apply rubber coating to the housing of the product. Although this can improve the anti-tensile ability, through long-term use and verification, it is found that this rubber coating structure has certain risks. The rubber coating on the housing will fix the terminals inside the plug-in part. After long-term use, the terminals in the plug-in part will be damaged by being pushed apart, which will cause the contact impedance of the terminals to increase. In severe cases, it will cause the terminals to catch fire. Summary of the Invention

[0004] The main purpose of the present invention is to provide a plug and a lamp, aiming to reduce the risk of damage to the terminals in the plug-in part, improve the safety of the plug, and extend the service life of the plug.

[0005] To achieve the above object, the present invention provides a plug, which includes:

[0006] An insulating housing formed by ultrasonic welding of a first housing and a second housing. The first housing and the second housing enclose an installation cavity and a wire passing hole communicating with the installation cavity;

[0007] A plug-in part inserted into the installation cavity and extending outward. Terminals are provided on the plug-in part; and

[0008] A connecting wire electrically connected to the terminals and led out through the wire passing hole. A limiting part is provided on the hole wall of the wire passing hole, and the limiting part abuts against the outer wall of the connecting wire to limit the connecting wire from moving in a first direction.

[0009] Optionally, at least two spaced protrusions are protruded on two opposite hole walls of the wire passing hole in the first direction to form the limiting part.

[0010] Optionally, the end face of the limiting part abutting against the connecting wire is circular arc-shaped.

[0011] Optionally, both the terminals and the connecting wire can move in a second direction, and the first direction is perpendicular to the second direction.

[0012] Optionally, there is a gap between the two hole walls of the wire passing hole in the second direction and the outer wall of the connecting wire, so that the connecting wire can move in the second direction.

[0013] Optionally, the plug-in connector has a first surface and a second surface opposite to each other in the first direction. The first surface of the plug-in connector is ultrasonically welded and fixed to the insulating housing to limit the movement of the plug-in connector in the first direction, and the second surface of the plug-in connector is partially abutted against the insulating housing.

[0014] Optionally, welding ribs are distributed along the connection surface on the first housing and / or the second housing.

[0015] Optionally, the first housing is provided with positioning posts, and the second housing is provided with positioning holes corresponding to the positions of the first housing, and the positioning posts are inserted into the positioning holes.

[0016] Optionally, both the first housing and the second housing are injection-molded parts.

[0017] To achieve the above object, the present invention further provides a lamp, including the plug as described above, and the plug includes:

[0018] An insulating housing formed by ultrasonic welding of a first housing and a second housing, the first housing and the second housing enclosing an installation cavity and a wire passing hole communicating with the installation cavity;

[0019] A plug-in connector inserted into the installation cavity and extending outward, the plug-in connector being provided with terminals; and

[0020] A connecting wire electrically connected to the terminals and led out through the wire passing hole, and a limiting portion is provided on the hole wall of the wire passing hole, and the limiting portion abuts against the outer wall of the connecting wire to limit the movement of the connecting wire in the first direction.

[0021] In the technical solution of the present invention, the plug includes an insulating housing, a plug-in connector and a connecting wire; the insulating housing is formed by ultrasonic welding of a first housing and a second housing, the first housing and the second housing enclose an installation cavity and a wire passing hole communicating with the installation cavity; the plug-in connector is inserted into the installation cavity and extends outward, the plug-in connector is provided with terminals; the connecting wire is electrically connected to the terminals and led out through the wire passing hole, and a limiting portion is provided on the hole wall of the wire passing hole, and the limiting portion abuts against the outer wall of the connecting wire to limit the movement of the connecting wire in the first direction. Since the terminals in the plug-in connector are restricted from moving in the first direction and can move in the second direction, the limit fixing of the terminals in the second direction is released, the terminals are prevented from being spread apart, the risk of terminal damage is effectively reduced, the safety of the plug is improved, and the service life of the plug is extended. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 Schematic diagram of the structure of an embodiment of the plug of the present invention;

[0024] Figure 2 Exploded view of an embodiment of the plug of the present invention;

[0025] Figure 3 Another exploded view of an embodiment of the plug of the present invention;

[0026] Figure 4 Side view of an embodiment of the plug of the present invention.

[0027] Explanation of the reference numerals in the drawings:

[0028] 10. Insulating housing; 20. Connector; 30. Connecting wire; 10a. Installation cavity; 10b. Wire passing hole; 101a. Gap; 101. Protrusion; 11. First outer shell; 12. Second outer shell.

[0029] The realization of the object, functional features and advantages of the present invention will be further described in conjunction with the embodiments with reference to the drawings. Specific embodiments

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0031] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if the embodiments of the present invention involve descriptions such as "first" and "second", the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] The present invention provides a plug, which can be applied to devices such as lamps, and is not limited here.

[0034] Refer to Figures 1 to 4 , in an embodiment of the present invention, the plug includes an insulating housing 10, a plug-in member 20, and a connecting wire 30; the insulating housing 10 is formed by ultrasonic welding of a first outer shell 11 and a second outer shell 12, and the first outer shell 11 and the second outer shell 12 enclose an installation cavity 10a and a wire passing hole 10b communicating with the installation cavity 10a; the plug-in member 20 is inserted into the installation cavity 10a and extends outwards, and the plug-in member 20 is provided with terminals; the connecting wire 30 is electrically connected to the terminals of the plug-in member 20 and is led outwards through the wire passing hole 10b, and a limiting portion is provided on the hole wall of the wire passing hole 10b, and the limiting portion abuts against the outer wall of the connecting wire 30 to limit the connecting wire 30 from moving in the first direction.

[0035] Mainly refer to Figure 2 , in this embodiment, both the first outer shell 11 and the second outer shell 12 can adopt insulating materials such as hard plastic, both the first outer shell 11 and the second outer shell 12 can be injection molded parts made by an injection molding process, the first outer shell 11 and the second outer shell 12 can be fixed by ultrasonic welding, and welding ribs are distributed along the joint surface on the first outer shell 11 and / or the second outer shell 12 to facilitate ultrasonic welding. In the case of no waterproof requirement, a plurality of welding ribs can be provided, and the plurality of welding ribs can be arranged at intervals on the outer shell joint surface.

[0036] In this embodiment, the first outer shell 11 can be provided with positioning posts, and the second outer shell 12 can be provided with matching positioning holes corresponding to the positions of the first outer shell 11. The positioning posts are inserted into the positioning holes to realize the pre-positioning of the first outer shell 11 and the second outer shell 12 during welding, so as to facilitate ultrasonic welding and improve the reliability of the housing assembly 10.

[0037] It should be noted that ultrasonic welding utilizes high-frequency vibration waves transmitted to the surfaces of two objects to be welded. In this area, the two object surfaces are rubbed against each other through the vibration energy to form a fusion between the molecular layers. Using ultrasonic welding instead of the encapsulation technology can create a movable space inside the housing.

[0038] Of course, in some other embodiments, the insulating housing 10 can also be assembled from more components, which is not limited here.

[0039] In this embodiment, the terminals of the connector 20 and the connecting wire 30 can both move along the second direction, and the first direction is perpendicular to the second direction.

[0040] It should be noted that as Figure 4 shown, the first direction can be the height direction of the connector 20, that is, the Z-axis direction in the figure; the second direction can be the width direction of the connector 20, that is, the Y-axis direction in the figure.

[0041] In this embodiment, the connector 20 can be a TYCO connector or other connectors 20 with terminals inside, which is not limited here.

[0042] In this embodiment, the connecting wire 30 is used to transmit electrical signals. It can include a conductor and an insulating layer coated on the outside of the conductor. The conductor is electrically connected to the terminal of the connector 20, and the insulating layer abuts against the limiting part of the hole wall at the wire passing hole 10b to be restricted from moving along the first direction, so as to avoid the connecting wire 30 moving and driving the connector 20 and its terminals to move along the first direction.

[0043] Among them, the limiting part of the wire passing hole 10b can be a strip-shaped protrusion or a circular bump, etc., and the end surface of the limiting part abutting against the connecting wire 30 can be arranged in a circular arc shape to avoid leaving indentations on the connecting wire 30 and ensure that it can pass the pressure test. Preferably, the radius R of the arc can be 1.5 mm.

[0044] In the technical solution of the present invention, the plug includes an insulating housing 10, a plug-in member 20, and a connecting wire 30; the insulating housing 10 is formed by ultrasonic welding of a first outer shell 11 and a second outer shell 12, and the first outer shell 11 and the second outer shell 12 enclose an installation cavity 10a and a wire passing hole 10b communicating with the installation cavity 10a; the plug-in member 20 is inserted into the installation cavity 10a and extends outwards, and the plug-in member 20 is provided with terminals; the connecting wire 30 is electrically connected to the terminals of the plug-in member 20 and is led outwards through the wire passing hole 10b, and a limiting portion is provided on the hole wall of the wire passing hole 10b, and the limiting portion abuts against the outer wall of the connecting wire 30 to limit the connecting wire 30 from moving in the first direction; the terminals of the plug-in member 20 and the connecting wire 30 can both move in the second direction, and the first direction is perpendicular to the second direction. Since the terminals in the plug-in member 20 can move in the second direction, the limit fixation of the terminals in the second direction is released, the terminals are prevented from being spread apart, the risk of terminal damage is effectively reduced, the safety of the plug is improved, and the service life of the plug is extended.

[0045] In addition, in an embodiment, the plug-in member 20 has a first surface and a second surface opposite to each other in the first direction. The first surface of the plug-in member 20 and the insulating housing 10 can be fixed by ultrasonic welding to limit the plug-in member 20 from moving in the first direction, and the second surface of the plug-in member 20 is partially abutted against the insulating housing 10.

[0046] Since the outer shell of the plug-in member 20 is fixed to the insulating housing 10 by ultrasonic welding, and the plug-in member 20 is fixed in the installation cavity 10a of the insulating housing 10, the plug-in member 20 and the terminals therein cannot move in the third direction, the tensile strength requirement of the plug-in member 20 can be met, and at the same time the terminals of the plug-in member 20 can move in the second direction, improving the adaptability of the plug-in member 20 during mating. Wherein, the third direction can be the length direction of the plug-in member 20.

[0047] In addition, during the product production process, it is found that the housing applies energy to the wire during ultrasonic welding. Excessive energy will cause the outer skin of the connecting wire 30 to be damaged and produce deep indentations, affecting the tensile strength of the connecting wire 30.

[0048] In response to this, the present application also makes improvements to the installation structure of the connecting wire 30. Refer to Figure 2 , in an embodiment, at least two spaced protrusions 101 are protruded on the two hole walls of the wire passing hole 10b opposite to each other in the first direction to form a limiting portion. In this way, the stability of the connecting wire 30 and the plug-in member 20 connected thereto in the height direction can be further improved.

[0049] Further, in order to enable the terminals to move in the second direction, refer to Figures 2 to 4, 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, that is, the connecting wire 30 and the insulating housing 10 are in clearance fit at the wire passing hole 10, so that the connecting wire 30 can move in the second direction, further avoiding the terminals from being spread apart, reducing the risk of terminal damage, improving the safety of the plug, and extending the service life of the plug.

[0050] In one embodiment, the connector 20 and the insulating housing 10 are fixed by ultrasonic welding to form three welding points. In this way, the failure of the single-point connection between the connector 20 and the insulating housing 10 can be avoided, and further the welding stability between the connector 20 and the insulating housing 10 is improved.

[0051] In this embodiment, the connection lines of the three welding points can be arranged in a triangular shape, so that the connection between the connector 20 and the insulating housing 10 is more reliable, avoiding the failure of single-point and single-direction connections, and greatly improving the connection stability of the connector 20 in the height direction.

[0052] The present invention also provides a lamp, which includes a plug. The specific structure of the plug refers to the above embodiments. Since the lamp provided by the present invention includes all the solutions of all the above embodiments of the plug, therefore, it has at least the same technical effects as the plug, which will not be elaborated here one by one.

[0053] The above are only the optional embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the specification and drawings of the present invention under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A plug, characterized in that, the plug comprises: an insulating housing (10) formed by ultrasonic welding of a first outer shell (11) and a second outer shell (12), the first outer shell (11) and the second outer shell (12) enclosing an installation cavity (10a) and a wire passing hole (10b) communicating with the installation cavity (10a); a plug-in component (20) inserted into the installation cavity (10a) and extending outward, the plug-in component (20) being provided with terminals; and a connecting wire (30) electrically connected to the terminals and led out through the wire passing hole (10b), and a limiting portion is provided on the hole wall of the wire passing hole (10b), the limiting portion abutting against the outer wall of the connecting wire (30) to limit the connecting wire (30) from moving in a first direction; the terminals and the connecting wire (30) can both move in a second direction, the first direction is perpendicular to the second direction, the first direction is the height direction of the plug-in component (20), and the second direction is the width direction of the plug-in component (20); 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) can move in the second direction.

2. The plug according to claim 1, characterized in that, at least two spaced protrusions (101) are protruded on the two hole walls of the wire passing hole (10b) opposite to each other in the first direction to form the limiting portion.

3. The plug according to claim 2, characterized in that, the end face of the limiting portion abutting against the connecting wire (30) is arranged in an arc shape.

4. The plug according to claim 1, characterized in that, the plug-in component (20) has a first surface and a second surface opposite to each other in the first direction, the first surface of the plug-in component (20) is ultrasonically welded and fixed to the insulating housing (10) to limit the plug-in component (20) from moving in the first direction, and the second surface of the plug-in component (20) is partially abutted against the insulating housing (10).

5. The plug according to claim 1, characterized in that, welding ribs are distributed along the joint surface on the first outer shell (11) and / or the second outer shell (12).

6. The plug according to claim 5, characterized in that, the first outer shell (11) is provided with positioning posts, and the second outer shell (12) is provided with positioning holes corresponding to the positions of the first outer shell (11), and the positioning posts are inserted into the positioning holes.

7. The plug according to claim 5, characterized in that, both the first outer shell (11) and the second outer shell (12) are injection molded parts.

8. A lamp, characterized in that, it comprises the plug according to any one of claims 1 to 7.

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