Patent Publication Number: US-11658447-B2

Title: Pin-type LED lamp holder and manufacturing method of the same

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to Chinese Patent Application No. 202011224647.4, filed Nov. 5, 2020, the contents of which are incorporated herein by reference. 
     BACKGROUND 
     1. Technical Field 
     The present disclosure relates to a field of lamp technology, especially to a pin-type LED lamp holder and a manufacturing method thereof. 
     2. Description of Related Art 
     A lamp is a device that may have light transmitted through, distribute light and change light distribution of a light source, including all parts and components needed to fix and protect the light source, as well as wiring accessories necessary for connection with a power supply. The lamp enables the light source to reliably emit light to meet a human&#39; needs for light in various activities. In addition to an electrical light source, a modern electrical lamp further includes an optical component, an electrical component and a mechanical component. Most holders of lamps are not waterproof, and need to be fixed by such a mechanical structure as a screw. In order to address the above problems, a patent document with an application number CN201920899185.2 proposes a new pin-type LED lamp holder. In the new pin-type LED lamp holder, there are not many differences between a first cover and a second cover, facilitating design and manufacture of a mold. Compared with traditional fixing by using a screw, use of ultrasonic sealing results in good fixing. A cooperation of a convex rib with a sealing groove has a waterproof function. An inner edge is advantageous for preventing water flow from seeping into a gap between a side tube and a conductive wire, and meanwhile, may tighten the conductive wire. The new pin-type LED lamp holder is complex in structure and processing, and is costly in an ultrasonic sealing process. Moreover, because the lamp holder is exposed at a part connecting to the pin-type LED lamp, and it is easy to touch a conductive part when the LED lamp is being plugged, it is likely to risk electric shock. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    shows an exploded view of a pin-type LED lamp holder in Embodiment One in the present disclosure. 
         FIG.  2    shows a schematic view of a structure of the pin-type LED lamp holder in Embodiment One in the present disclosure. 
         FIG.  3    shows an exploded view of a pin-type LED lamp holder in Embodiment Two in the present disclosure. 
         FIG.  4    shows a schematic view of a structure of the pin-type LED lamp holder in Embodiment Two in the present disclosure. 
         FIG.  5    is a schematic view of a structure when a mounting head and a connector are connected in the present disclosure. 
         FIG.  6    is a schematic view of a structure of a fixing tube in the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     The present application will be further described below with reference to the accompanying drawings for further clearly and fully discussing the technical solutions of the present disclosure. 
     Embodiment One 
     With reference to  FIGS.  1  to  6   , the present disclosure provides a pin-type LED lamp holder including a connector  10 , a first lead wire  28 , a second lead wire  29 , a first fixing tube  22  and a second fixing tube  23 , the connector  10  provided with a first hole  11  and a second hole  12  through the entire connector  10 , the first fixing tube  22  and the first lead wire  28  fixedly connected and plugged into the first hole  11 , and the second fixing tube  23  and the second lead wire  29  fixedly connected and plugged into the second hole  12 . The first fixing tube  22  and the second fixing tube  23  are identical in terms of shape and structure, each of the first fixing tube  22  and the second fixing tube  23  is provided with a double-wire lug  24  and a window  25 , the double-wire lug  24  provided with a first holding groove  26  and a second holding groove  27  to hold a lead wire, and a tube wall being concave at the window  25 . The pin-type LED lamp holder further includes a mounting head  13  fixedly connected to an end of the connector  10 . The mounting head  13  is provided with a separating plate  14  and two fixing blocks  17 , the separating plate  14  disposed between the two fixing blocks  17  to form a first groove  15  and a second groove  16 , a central position of the first groove  15  being in communication with the first hole  11 , and a central position of the second groove  16  being in communication with the second hole  12 . 
     In this embodiment, the first hole  11  and the second hole  12  are identical with an upper part wider than a lower part. A fixing tube is of the same structure of an upper part wider than a lower part, and the fixing tube may generally be fixed in a hole after the fixing tube is plugged into the hole. Both ends of either of the first lead wire  28  and the second lead wire  29  have two connecting wires respectively from the fixing tube. In this way, the lamp holder may be connected in parallel or in series with another identical lamp holder. The double-wire lug  24  provided on the fixing tube enables the fixing tube to have two lead wires led out. The tube wall of the window  25  is concave, so that the fixing tube, when connecting a pin-type LED lamp, can fix a connecting lamp foot better so that it is not easy for the lamp foot to escape from the fixing tube. The central position of the first groove  15  is in communication with the first hole  11 , and the central position of the second groove  16  is in communication with the second hole  12 . The first lead wire  28  and the second lead wire  29  are lead out through the grooves. 
     In addition, the pin-type LED lamp holder further includes a cover plate  19  provided with fixing pillars  20  and a groove  21 , the fixing pillars  20  plugged into fixing holes  18  provided in the fixing blocks  17 , and a top end of the separating plate  14  clamped in the groove  21 . 
     In this embodiment, the fixing pillars  20  and the groove  21  provided on the cover plate  19  double fix the cover plate  19  and the mounting head  13 , thereby wires are compressed better. 
     In addition, the pin-type LED lamp holder further includes a first injection-molded member  30  integrally formed, the first injection-molded member  30  totally wrapping the mounting head  13  and part of the connector  10 , the first injection-molded member  30  provided with a first accommodating cavity  33  with screw threads on an inner wall of the first accommodating cavity  33 , the connector  10  partially accommodated in the first accommodating cavity  33 , and the first lead wire  28  and the second lead wire  29  extending to periphery of the first injection-molded member  30 . 
     In this embodiment, the first injection-molded member  30  is provided with screw threads to facilitate screwing between the lamp holder and a protection shield. In this way, when the pin-type LED lamp is installed on the pin-type LED lamp holder, the holder may be screwed to the protection shield, so that the LED lamp connected to the lamp holder is better protected. 
     In addition, all of the connector  10 , the mounting head  13 , the cover plate  19 , the first injection-molded member  30  and a second injection-molded member  31  are made of an insulation material. 
     The present disclosure further provides a manufacturing method of the pin-type LED lamp holder, including the following processing steps: 
     S1: fixedly electrically connecting the first lead wire  28  to the first fixing tube  22 , the second lead wire  29  to the second fixing tube  23 , and then plugging the first fixing tube  22  into the first hole  11 , and the second fixing tube  23  into the second hole  12 ; 
     S2: pressing the first lead wire  28  and the second lead wire  29  in a direction of the first groove  15  and the second groove  16 , and then fixedly installing the cover plate  19  and the mounting head  13 , the lead wires tightly pressed in the grooves by the cover plate  19 ; and 
     S3: installing a structure completed assembling in S2 into a mold of the first injection-molded member  30 , then performing injection molding to form the first injection-molded member  30 , and demolding to form a completed structure of the first injection-molded member  30 . 
     Embodiment Two 
     This embodiment is distinguished from Embodiment One in that a pin-type LED lamp holder in Embodiment Two does not include a mounting head  13 , but two lead wires are led out directly through a connector  10 , and then a complete pin-type LED lamp holder is produced in an integral manner through a second injection-molded member  31 . 
     With reference to  FIGS.  1  to  6   , the present disclosure provides a pin-type LED lamp holder including the connector  10 , a first lead wire  28 , a second lead wire  29 , a first fixing tube  22  and a second fixing tube  23 , the connector  10  provided with a first hole  11  and a second hole  12  through the entire connector  10 , the first fixing tube  22  and the first lead wire  28  fixedly connected and plugged into the first hole  11 , and the second fixing tube  23  and the second lead wire  29  fixedly connected and plugged into the second hole  12 . The pin-type LED lamp holder further comprises a second injection-molded member  31  integrally formed and a wire guide  32 , the second injection-molded member  31  partially wrapping the connector  10 , the second injection-molded member  31  provided with a second accommodating cavity  34  having screw threads on an inner wall of the second accommodating cavity  34 , the connector  10  partially accommodated in the second accommodating cavity  34 , and the wire guide  32  fixing and guiding the first lead wire  28  and the second lead wire  29  extending from the second injection-molded member  31 . 
     In this embodiment, the wire guide  32  is provided with two through holes capable of turning directions. When a lead wire is plugged into one of the through holes, a direction of the lead wire may be changed by the wire guide  32 , and then the lead wire may be connected to a circuit. The second injection-molded member  31  has a same function as the first injection-molded member  30 , and is also provided with screw threads to be connected to a protection shield. 
     The present disclosure further provides a manufacturing method of the pin-type LED lamp holder, including the following processing steps: 
     S1: fixedly electrically connecting the first lead wire  28  to the first fixing tube  22 , the second lead wire  29  to the second fixing tube  23 , and then plugging the first fixing tube  22  into the first hole  11 , and the second fixing tube  23  into the second hole  12 ; 
     S2′: installing the structure completed assembling in S1 into a mold of the second injection-molded member  31 , then performing injection molding to form the second injection-molded member  31 , and demolding to form a completed structure of the second injection-molded member  31 ; 
     S3′: threading a lead wire extending from the second injection-molded member  31  through the wire guide  32  to complete guide of the lead wire to obtain a completed article of the pin-type LED lamp holder. 
     Compared with the processing steps in Embodiment One, the processing steps in Embodiment Two do not include assembling a mounting head  13 , but the lead wires are led out directly from the connector  10 , and the wire guide  32  is further connected after the second injection-molded member  31  is lead out. 
     It should be noted that the present application may have other various embodiments. Modifications and variations made by those skilled in the art based on the embodiments according to the present application without any creative work also fall within the scope of the present application.