Electric connector with lamp

Abstract

The utility model discloses an electric connector with a lamp, which comprises an inner mold shell, an outer mold shell, a circuit board assembly and a connecting assembly, and is characterized in that a plurality of lamp beads are arranged on the circuit board assembly at intervals and are packaged in the inner mold shell through injection molding; a plurality of light guide columns corresponding to the lamp beads are formed on the inner mold shell; the outer mold shell wraps the outer side of the inner mold shell through secondary injection molding, the top ends of the light guide columns are exposed, the light guide columns and isolation grooves formed among the light guide columns are formed in the inner mold shell in the injection molding process, and isolation bosses are filled and formed in the isolation grooves in the secondary injection molding process of the outer mold shell. According to the technical scheme, the electric connector is used for blocking light crosstalk between the adjacent light guide columns through the embedded structure of the isolation bosses and the isolation grooves, the problem of optical signal interference among multiple indication lamps is effectively solved, the indication definition and reliability are improved, the optical performance is remarkably improved, and the electric connector is suitable for industrial production.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and more specifically to a light-up electrical connector. Background Technology

[0002] Connectors, as a key electrical interface component, are widely used in communication equipment, machine tools, industrial robots, manipulators, and various automated equipment, undertaking the important function of signal and power transmission. A current type of elbow connector consists of an inner mold housing, an outer mold housing, a circuit board assembly, and a wire harness. Several LED beads are integrated on the circuit board assembly and encapsulated within the inner mold housing using injection molding. Corresponding to the position of each LED bead, multiple light guide pillars are formed on the inner mold housing to transmit light to the outer surface for status indication. The outer mold housing covers the outside of the inner mold housing, exposing the ends of the light guide pillars on the outer surface for observation of the light signals.

[0003] In the existing production process, since the light guide column is formed during the injection molding stage of the inner mold shell and its bottom is close to the light-emitting area of ​​the lamp bead, the spacing between each light guide column is small. The light can easily diffuse through the gaps in the bottom plastic material or structure, causing mutual interference of light signals and light crosstalk. This not only reduces the clarity and accuracy of the indication, but also causes misjudgment in complex equipment with multiple parallel signals, affecting the operator's real-time monitoring of the equipment status. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the problem that in the prior art, the spacing between multiple light guide pillars on the connector is small, and light is easily diffused through the bottom plastic material or structural gaps, resulting in mutual interference of light signals and light crosstalk.

[0005] To address the aforementioned problems, this utility model provides an illuminated connector, comprising an inner mold housing, an outer mold housing, a circuit board assembly, and a connecting assembly. The circuit board assembly has multiple LED beads spaced apart and is injection molded into the inner mold housing. The inner mold housing is an injection-molded structure with multiple light guide pillars formed corresponding to the LED beads. The outer mold housing is formed by secondary injection molding, covering the outer side of the inner mold housing and exposing the top ends of the light guide pillars. The inner mold housing has isolation grooves located between the multiple light guide pillars. During injection molding, the outer mold housing has multiple isolation bosses corresponding to the isolation grooves, which are embedded in the isolation grooves to block light crosstalk between adjacent light guide pillars.

[0006] As a preferred embodiment, a plurality of light guide pillars are arranged at equal intervals on the top end face of the inner mold housing, and an isolation groove is provided between each two adjacent light guide pillars, the width of which is equal to the gap width between the two adjacent light guide pillars.

[0007] As a preferred embodiment, the isolation groove is a strip-shaped groove structure formed on the top of the inner mold housing, and the length of the isolation groove is greater than the radial length of the light guide post.

[0008] As a preferred embodiment, the cross-section of the isolation groove is an inverted trapezoidal structure with a narrow bottom and a wide top. The width of the groove opening is greater than the width of the bottom to form an flared groove. The four side walls of the isolation groove are inclined structures that connect to the bottom of the groove.

[0009] As a preferred embodiment, the isolation groove is an arc-shaped groove structure formed on the top of the inner mold shell.

[0010] As a preferred embodiment, the isolation boss is an elongated protrusion extending along the length of the light guide post. The cross-section of the isolation boss is adapted to the inverted trapezoidal cross-section of the isolation groove. The isolation boss is embedded into the isolation groove by injection molding, so that the two are combined to form an inverted trapezoidal anti-detachment fitting structure.

[0011] As a preferred embodiment, the light guide post and the inner mold shell are a transparent structure integrally injection molded from transparent plastic material.

[0012] As a preferred embodiment, the light guide post is a columnar structure that protrudes upward from the top of the inner mold housing, and the top end of the light guide post is exposed on the top outer surface of the outer mold housing.

[0013] As a preferred embodiment, the connecting assembly includes a connecting post fixedly connected to the inner mold housing, and a plurality of insertion hole structures disposed in the connecting post. The insertion hole structures are provided with insert core structures for connection to the circuit board assembly, and the connecting post is connected to the inner mold housing in an elbow structure.

[0014] As a preferred embodiment, one end of the inner mold housing is provided with a transmission harness connected to the circuit board assembly, the transmission harness extending out of the outer mold housing, and the connecting assembly further includes a locking sleeve structure disposed on the outside of the plug-in end for connecting an external connector structure, and a sealing ring is provided between the locking sleeve structure and the connecting post.

[0015] The technical solution of this utility model has the following advantages compared with the prior art:

[0016] 1. In the illuminated electrical connector provided by this utility model, the circuit board assembly is injection molded into the inner mold housing. During the first injection molding of the inner mold housing, multiple light guide pillars and isolation grooves distributed between the multiple light guide pillars are formed. During the second injection molding of the outer mold housing, matching isolation bosses are filled and formed, which effectively blocks light crosstalk between adjacent light guide pillars. The advantage of this design is that the isolation grooves are formed with the inner mold housing in the first injection molding, and the isolation bosses are formed with the outer mold housing in the second injection molding. The entire injection molding process is automated, requiring no additional assembly, which significantly improves production efficiency. This mechanical fitting structure, formed by the isolation bosses being directly filled into the inner mold isolation grooves by the second injection molding of the outer mold housing, can avoid displacement or detachment of the isolation components due to vibration and temperature changes. This not only achieves optical isolation between adjacent light guide pillars, avoids cross-interference of light signals, improves the visibility and identification accuracy of indicator lights in complex environments, and significantly improves optical performance, but also enhances the mechanical connection strength between the inner and outer molds, improving product reliability.

[0017] 2. In the illuminated electrical connector provided by this utility model, the width of the isolation groove is exactly equal to the gap width between two adjacent light guide pillars. The isolation boss filled by the outer mold shell during injection molding can accurately fill all the gaps between adjacent light guide pillars, forming a continuous and uninterrupted physical barrier, eliminating lateral light leakage, and preventing light from diffracting or transmitting from the side wall due to the groove being too narrow. This eliminates the possibility of light leakage from the structural root. In addition, the filled isolation boss essentially becomes a longitudinal reinforcement structure connecting the inner and outer mold shells, improving the overall bending and torsional stiffness.

[0018] 3. In the lamp-equipped electrical connector provided by this utility model, the isolation groove adopts an inverted trapezoidal design with a wide groove opening and a narrow groove bottom. This makes the isolation boss formed during the secondary injection molding of the outer mold shell also present a corresponding inverted trapezoidal shape. That is, after the isolation boss cools and solidifies, it is locked in the isolation groove, so that the isolation boss and the isolation groove form an anti-detachment interlocking structure, making the two more firmly connected and the overall structure more rigid. This ensures the permanence and reliability of the optical isolation barrier and eliminates the hidden danger of light leakage caused by isolation failure. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below.

[0020] Figure 1 This is a three-dimensional structural diagram of the lamp-equipped electrical connector of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the lamp-equipped electrical connector of this utility model from another direction;

[0022] Figure 3This is a cross-sectional schematic diagram of the lamp-equipped electrical connector of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the inner mold shell of this utility model;

[0024] Figure 5 This is a schematic diagram of the planar structure of the inner mold shell of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Inner mold housing; 2. Outer mold housing; 3. Circuit board assembly; 4. Light guide post; 5. Isolation groove; 6. Isolation boss; 7. Connecting post; 71. Insertion hole structure; 8. Locking sleeve structure; 81. Sealing ring; 9. Transmission harness. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example

[0030] This embodiment provides, as follows: Figures 1-5The illustrated lamp connector includes an inner mold housing 1, an outer mold housing 2, a circuit board assembly 3, and a connecting assembly. The circuit board assembly 3 has multiple LEDs spaced apart and is injection molded into the inner mold housing 1. The inner mold housing 1 is an injection-molded structure with multiple light guide pillars 4 corresponding to the LEDs. The outer mold housing 2 is formed by secondary injection molding, covering the outer side of the inner mold housing 1 and exposing the top ends of the light guide pillars 4. The inner mold housing 1 has isolation grooves 5 located between the multiple light guide pillars 4. During injection molding, the outer mold housing 2 has multiple isolation bosses 6 corresponding to the isolation grooves 5, which are embedded in the isolation grooves 5 to block light crosstalk between adjacent light guide pillars 4.

[0031] The above-described implementation method is the core technical solution of this embodiment. The circuit board assembly 3 is injection molded into the inner mold housing 1. During the first injection molding process, the inner mold housing 1 forms multiple light guide pillars 4 and isolation grooves 5 distributed between the light guide pillars 4. During the second injection molding process of the outer mold housing 2, matching isolation bosses 6 are filled and formed, effectively blocking light crosstalk between adjacent light guide pillars 4. The advantage of this design is that, since the isolation grooves 5 are formed in the first injection molding process with the inner mold housing 1, and the isolation bosses 6 are formed in the second injection molding process with the outer mold housing 2, the entire injection molding process is automated. No additional assembly is required, significantly improving production efficiency. This type of isolation boss 6 is a mechanically fitted structure formed by directly filling the inner mold isolation groove 5 with the outer mold shell through secondary injection molding. This structure can prevent the isolation component from shifting or falling off due to vibration and temperature changes, ensuring that the isolation effect does not decrease during long-term use. This not only achieves optical isolation between adjacent light guide pillars, avoids cross-interference of light signals, improves the visibility and identification accuracy of indicator lights in complex environments, and significantly improves optical performance, but also enhances the mechanical connection strength between the inner mold and the outer mold, improves the connection strength between the inner and outer molds, and improves product reliability.

[0032] In a further preferred configuration, multiple light guide pillars 4 are equidistantly arranged on the top end face of the inner mold housing 1. An isolation groove 5 is correspondingly provided between each pair of adjacent light guide pillars 4. The width of the isolation groove 5 is equal to the gap width between the two adjacent light guide pillars 4. The advantage of this design is that the isolation boss 6 filled by the outer mold housing 2 during injection molding can accurately fill all the gaps between adjacent light guide pillars 4, forming a continuous and uninterrupted physical barrier, preventing lateral light leakage, avoiding light diffraction or transmission from the side wall due to the groove being too narrow, eliminating the possibility of light crosstalk from the structural root, and the filled isolation boss essentially becomes a longitudinal reinforcement structure connecting the inner and outer mold housings, improving the overall bending and torsional stiffness.

[0033] The following is combined Figures 3-5 The specific arrangement of the isolation groove and isolation boss is described in detail below:

[0034] The isolation groove 5 is a strip-shaped groove structure formed on the top of the inner mold housing 1. The length of the isolation groove 5 is greater than the radial length of the light guide post 4. With this structure, the isolation boss 6 formed by injection molding from the outer mold can completely block the path of light diffusion from any position on the bottom and side wall of the light guide post 4, thus avoiding local light leakage caused by insufficient groove length. Further preferably, the cross-section of the isolation groove 5 is an inverted trapezoidal structure with a narrow bottom and a wide top. The width of the groove opening of the isolation groove 5 is greater than the width of the bottom to form an flared groove. The four sides of the isolation groove 5 are inclined structures connecting to the bottom of the groove. Correspondingly, the isolation boss 6 is a long strip-shaped protrusion extending along the length direction of the light guide post 4. The cross-section of the isolation boss 6 is adapted to the inverted trapezoidal cross-section of the isolation groove 5. The isolation boss 6 is embedded into the isolation groove 5 by injection molding, so that the two are combined to form an inverted trapezoidal anti-detachment fitting structure. As can be seen from the above structure, the isolation groove 5 adopts an inverted trapezoidal design with a wide opening and a narrow bottom. The advantages of this design are as follows: First, the isolation boss 6 formed during the secondary injection molding of the outer mold shell also presents a corresponding inverted trapezoidal shape. That is, after the isolation boss 6 cools and solidifies, it is locked in the isolation groove 5, forming an anti-detachment interlocking structure between the isolation boss 6 and the isolation groove 5. This design effectively resists the risk of separation between the isolation boss and the isolation groove due to vibration, thermal expansion and contraction, or cable stress during product use, ensuring the permanence and reliability of the light isolation barrier and fundamentally eliminating the potential for light leakage caused by isolation failure. Second, the flared groove body and sloping sidewall design of this isolation groove 5 significantly optimizes the injection molding process, facilitates demolding and ensures the molding quality of the boss. Furthermore, the sloping sidewall significantly increases the contact and bonding area between the isolation boss and the inner mold shell compared to a straight wall, making the two more firmly bonded and the overall structure more rigid.

[0035] As an alternative to the aforementioned isolation groove 5, the isolation groove 5 can be designed as an arc-shaped groove structure formed on the top of the inner mold housing. The arc-shaped groove structure partially surrounds the outside of the light guide post 4 and separates two adjacent light guide posts, with the corresponding isolation boss forming an arc-shaped boss structure and fitting into the isolation groove. Alternatively, the isolation groove 5 can be designed as a circular groove structure surrounding the outside of the light guide post, with the corresponding isolation boss fitted into the isolation groove 5 having a cylindrical structure. This isolation groove 5, using an arc-shaped or circular groove structure in conjunction with the isolation boss 6, can also effectively block light crosstalk between multiple light guide posts. Those skilled in the art can choose the specific structure of the isolation groove based on the above description, and will not be elaborated further here.

[0036] In this embodiment, the light guide post 4 and the inner mold housing 1 are integrally injection molded from transparent plastic material, forming a transparent or semi-transparent structure. The light guide post 4 is a columnar structure protruding upward from the top of the inner mold housing 1, with its top end exposed on the top outer surface of the outer mold housing 2. This structural design, where the light guide post 4 and the inner mold housing 1 are integrally injection molded from transparent plastic without any gaps, allows the light emitted by the LED to directly enter the interior of the light guide post 4, ultimately outputting brighter and more uniform indicator light, significantly improving light collection efficiency. The integrated material and structure of the inner mold housing and the light guide post ensures excellent optical performance while significantly enhancing the product's mechanical reliability and ease of production.

[0037] Combination Figure 2 and Figure 4 As shown, the connecting assembly includes a connecting post 7 fixedly connected to or integrally formed with the inner mold housing 1, and multiple socket structures 71 disposed in the connecting post 7. Each socket structure 71 has a core structure for connection to the circuit board assembly 3. The connecting post 7 is connected to the inner mold housing 1 in an elbow structure. This elbow structure design allows for more flexible insertion and removal directions, adapting to different installation postures of the equipment. It connects directly to the internal circuit board assembly 3 according to the core structure, eliminating the need for additional adapter terminals or cables. This minimizes the signal transmission path and effectively reduces impedance loss. Signal attenuation is achieved by providing a transmission harness 9 at one end of the inner mold housing 1, which is connected to the circuit board assembly 3. The transmission harness 9 extends out of the outer mold housing 2. The connection assembly also includes a locking sleeve structure 8 located on the outside of the plug-in end for connecting the external connector structure. This locking sleeve structure 8 adopts a threaded or snap-fit ​​design to provide strong mechanical locking force, ensuring that the external connector and the connecting post do not loosen under conditions such as vibration, impact, and tension, thereby improving the convenience of installation and maintenance. A sealing ring 81 is provided between the locking sleeve structure 8 and the connecting post 7 to improve the connection sealing performance.

[0038] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A lamp-equipped electrical connector, comprising an inner mold housing (1), an outer mold housing (2), a circuit board assembly (3), and a connecting assembly, characterized in that: The circuit board assembly (3) is provided with multiple LED beads at intervals and is encapsulated in the inner mold housing (1) by injection molding; the inner mold housing (1) is an injection molded structure and has multiple light guide pillars (4) formed corresponding to the multiple LED beads; the outer mold housing (2) is covered by the outer side of the inner mold housing (1) by secondary injection molding and exposes the top of the light guide pillars (4); the inner mold housing (1) is provided with isolation grooves (5) located between the multiple light guide pillars (4); the outer mold housing (2) is filled with multiple isolation bosses (6) in the multiple isolation grooves (5) during injection molding, and the isolation bosses (6) are embedded in the isolation grooves (5) to block light crosstalk between adjacent light guide pillars (4).

2. The illuminated electrical connector according to claim 1, characterized in that: Multiple light guide pillars (4) are arranged at equal intervals on the top end face of the inner mold housing (1). An isolation groove (5) is provided between each two adjacent light guide pillars (4). The width of the isolation groove (5) is equal to the gap width between two adjacent light guide pillars (4).

3. The illuminated electrical connector according to claim 2, characterized in that: The isolation groove (5) is a strip-shaped groove structure formed on the top of the inner mold housing (1), and the length of the isolation groove (5) is greater than the radial length of the light guide post (4).

4. The illuminated electrical connector according to claim 2, characterized in that: The isolation groove (5) has an inverted trapezoidal structure with a narrow bottom and a wide top. The groove opening width of the isolation groove (5) is greater than the bottom width to form an flared groove. The four sides of the isolation groove (5) are inclined structures that connect to the bottom of the groove.

5. The illuminated electrical connector according to any one of claims 1-4, characterized in that: The isolation boss (6) is a long strip-shaped protrusion extending along the length of the light guide post (4). The cross section of the isolation boss (6) is adapted to the inverted trapezoidal cross section of the isolation groove (5). The isolation boss (6) is embedded into the isolation groove (5) by injection molding, so that the two are combined to form an inverted trapezoidal anti-detachment fitting structure.

6. The illuminated electrical connector according to claim 1, characterized in that: The isolation groove (5) is an arc-shaped groove structure formed on the top of the inner mold shell (1).

7. The illuminated electrical connector according to claim 1, characterized in that: The light guide column (4) and the inner mold shell (1) are a transparent structure integrally injection molded from transparent plastic material.

8. The illuminated electrical connector according to claim 7, characterized in that: The light guide post (4) is a columnar structure that protrudes upward from the top of the inner mold housing (1), and the top end of the light guide post (4) is exposed on the top outer surface of the outer mold housing (2).

9. The illuminated electrical connector according to claim 1, characterized in that: The connecting assembly includes a connecting post (7) that is fixedly connected to or integrally formed with the inner mold housing (1), and a plurality of socket structures (71) provided in the connecting post (7). The socket structure (71) is provided with a core structure that is connected to the circuit board assembly (3). The connecting post (7) is connected to the inner mold housing (1) in an elbow structure.

10. The illuminated electrical connector according to claim 9, characterized in that: One end of the inner mold housing (1) is provided with a transmission harness (9) connected to the circuit board assembly (3). The transmission harness (9) extends out of the outer mold housing (2). The connecting assembly also includes a locking sleeve structure (8) provided on the outside of the plug end for connecting the external connector structure. A sealing ring (81) is provided between the locking sleeve structure (8) and the connecting post (7).

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