CN2805148Y - Lamp holders for color lamp string with no wiring terminals - Google Patents

Abstract

The utility model discloses a lamp holder for color lamp strings with no wiring terminals. The lamp holder is made into a form of longitudinal separate two halves which are buckled together. The lower half part of the lamp holder is provided with three sections of straight line-shaped grooves, and electric wires are arranged in the grooves. The bare end heads of electric wires pass through a central plane of the lamp holder and are arranged in the grooves on the plane edge. The two halves are clamped together through plastic hook handles on the lamp holder. The bare end heads of the electric wires are pressed into the grooves through convex tables on the lamp holder of the other half, and the convex tables are tightly jammed with side walls of the grooves. Thus, both bare ends of each electric wire are fixed. The bottom of a color lam is provided with an inserting core which can separate two leading wires and ensure two round trip wires on each side. When the color lamp is inserted into the lamp holder, the two round trip wires on each side can roll and jam the bare electric wires, and the convex table on the inserting core firstly support and open the central plane of the lamp holder. After the electric wires are tightly jammed, the convex tables fall into the grooves. Then, the central plane rebounds and returns to the position. As a result, the electric wires are more tightly jammed. Thus, the utility model ensures the reliability of electric connection and the firmness of the color lamp.

Description

The color lamp seat of non-binding post on the Color lamp string

One, relates to the field

The utility model relates to that electric wire on a kind of Color lamp string is connected with the lead-in wire of color lamp and the fixing color lamp seat used of color lamp.

Two, technical background

For many years Color lamp string all assembles like this: at first the top of electric wire, connect a binding post by the sheet metal punching out, binding post is placed in the groove of reserving in the intubate again, the lead-in wire of color lamp inserts in the lock pin, the color lamp lead-in wire that passes from the lock pin top is to the both sides replication, lock pin inserts intubate inside, by color lamp lead-in wire and binding post jam-packed, realizes being electrically connected.The packaging technology complexity of this Color lamp string, the only punching out of binding post, being connected between binding post and the electric wire, the placement of binding post in intubate just needs multiple working procedure, can only carry out hand assembled, but also needs expensive copper sheet.In the production cost of whole Color lamp string, binding post has accounted for greatly.

Three, the content of utility model

The purpose of this utility model is to provide a kind of binding post that do not have, the color lamp seat that electric wire directly is connected with the lead-in wire of color lamp, utilize this color lamp seat can be made into various Color lamp strings or decorative lamp, and color lamp seat part can also realize the automation assembling of machinery.

It is the same with common color lamp seat that the utility model is achieved in that, color lamp seat injection molding, novel color lamp seat comprises three-way and two lines equally, the color lamp seat is made up of lamp socket and two parts of inner lock pin, color lamp is fixed in the color lamp seat, and two of color lamp lead-in wires are realized being electrically connected with the lead of Color lamp string respectively in the color lamp seat.

Lamp socket in the color lamp seat is to separate before and after vertically, and the base of lamp socket interface links together, and is a folding with the base of interface, and perhaps the two halves lamp socket separates mutually.The hook that extends through interface is arranged on the lamp socket, and the back side of lamp socket has and hook platform in correspondence with each other, and the two halves lamp socket is in the same place by hook and platform are engaged.The two halves of two line lamp sockets are the same, and after the two halves lamp socket was interlocked, the longitudinal centre line that is equivalent to lamp socket was an axle, and the two halves lamp socket becomes the angle of 180 degree mutually.

The main effect of the first half of lamp socket is fixing various color lamps or light-emitting diode, and the first half of half lamp socket is the semicircular cylinder that vertically separates, or can embrace the part cylinder of color lamp or the pawl of several bendings etc.For after the fixing color lamp, fixedly other Decorative shells of color lamp, cover etc. not influencing under the situation that color lamp inserts, on the top of semicircular cylinder, can be done the pawl that can hook other Decorative shells, cover of various moulding etc. again.Other Decorative shells of color lamp, cover etc. on the edge fit, do the platform or the groove etc. of projection, be inserted on the cylinder to edge fit after, the platform or the pawl of projection are stuck in the groove, can not pull out again, thereby realize fixing between other Decorative shells, cover etc. of color lamp and the lamp socket.

The main effect of the latter half of lamp socket is securing electric lines and the exposed lead termination of electric wire, being electrically connected between realizing electric wire and color lamp going between.Three positions on the end on the interface of half lamp socket the latter half, side, side have the groove of three sections straight placement electric wires respectively, and are orthogonal or become angle arbitrarily between each section groove.Inside corner place between each section groove is the rib of square or become rib at any angle.The bottom of groove is to equal or slightly less than the face of cylinder of the diameter of wire, and the width of groove equals or slightly less than the diameter of electric wire, and the degree of depth of groove equals or slightly greater than the diameter of electric wire.When electric wire is installed, be the two halves lamp socket of a folding, open as hinge with the base of interface.The end face of wire outer skin withstands on the top end face of groove, electric wire is pushed be placed in top one section groove parallel with the base.Then the electric wire bending, along near the lamp socket side and the groove parallel, progressively electric wire is pushed and be placed in the groove with side.Electric wire bending again, along near lamp socket base and the groove parallel, progressively electric wire is pushed and is placed in the groove with the base, electric wire respectively from about the two halves lamp socket bottom of two sides draw.Electric wire was straight originally, and the electric wire that is placed in the groove is leaned on very tightly by the inwall of each section groove, and electric wire is curved the right angle firmly, is equivalent to electric wire is pressed on the both side surface of rib tightly.Because electric wire is soft, rib is hard, when pull the wire from the outside, tension is to rib, and rib extrudes ditch to electric wire one, the big more pressure that affacts between electric wire and the rib of pulling force is big more, have only very little power can become pulling force, so rib limited moving of electric wire, added the acting in conjunction of twice rib another section electric wire, just can ensure that the electric wire termination is not drawn out, thereby ensure the reliability of location, lamp socket internal wire termination.For higher reliability is arranged, can also be at the inwall of any one section groove, outside inwall is preferably done very shallow for example 0.3 millimeter high, the rib of many protrusions vertical with the direction of groove.These ribs at first can tighten electric wire, and simultaneously these ribs have increased the pressure of wire pair groove sidewall, are equivalent to electric wire and are pressed tightlyer, make that electric wire is more difficult to be drawn out.Can certainly not do these ribs.

Pasting three sections inner side edges of placing the groove of electric wire, a platform that exceeds interface is arranged, there is the central plane that is lower than interface at the center of lamp socket, fluted on the central plane, the position, middle and lower part on other one side of central plane, the platform that a projection is arranged, the outside of platform have a groove that is lower than the placement nuditing wire top of central plane.The platform that exceeds interface is corresponding by the lamp socket center line left and right sides with the groove of placing the nuditing wire top, and places 5 faces of the groove on nuditing wire top, all goes out the thickness of nuditing wire after by jam-packed greatly than the platform that exceeds interface.The exposed lead that stretch out electric wire termination in groove is pasting the central plane that is lower than interface, extends to the opposite side of central plane, and cross-arm on the placement groove.Exposed horizontal both sides up and down, lead termination are blocked by the platform of projection, can not laterally move up and down.Exposed lead termination can also be along the platform of the projection of position, central plane another side middle and lower part, and after a circle, cross-arm and is placed on central plane in addition on one side the groove on placement nuditing wire top again.After the two halves lamp socket is interlocked, exceed the platform of interface on second half lamp socket, be inserted in the groove of placing the nuditing wire top, the top of nuditing wire is stressed in groove, and exposed lead termination is fixed.

Place first section of wire ends above the outside of groove of electric wire, do a plastic hook that extends through the vertical interface of two halves lamp socket, when the hook of plastic hook makes progress, the symmetrical position of the opposite side of lamp socket center line and the plastic hook left and right sides, do the hole that can pass plastic hook, the opposite side end face in hole has the plane that can block plastic hook.Plastic hook on each half lamp socket is blocked other one side of second half lamp socket respectively, and the left and right sides is blocked the jail simultaneously, thereby the two halves lamp socket that vertically separates can be interlocked; When the hook of plastic hook is downward, in the groove of placing lead, have a hole of loosing core and passing through that forms plastic hook hook face.By the back side of the symmetrical lamp socket opposite side in lamp socket center line and the plastic hook left and right sides, reserve a platform that can block plastic hook.Be placed on the electric wire in the groove, the hole of passing through of loosing core that forms plastic hook hook face is sealed; Plastic hook also can be made in does not have top two sections one side of placing the groove of electric wire, and the hook of plastic hook is downward, and when the two halves lamp socket was interlocked, plastic hook was hooked in the back side of the groove of placing electric wire.Form the hole of loosing core and passing through of plastic hook hook face, seal the top, the outside that just in time is placed the groove of electric wire.Also can all do plastic hook to half the right and left of lamp socket, second half does platform, can be snapped to lamp socket together equally.In correspondence with each other plastic hook and platform are also done in the base of the lamp socket interface of two separation.

In order to make the two halves lamp socket can the interlock sealing between mutually, on the interface of two halves lamp socket periphery any part, can also do the platform of extend through interface of strip and the groove of depression in correspondence with each other.Pass through the symmetrical other one side of center line with the electric wire outlet, place the outside of the groove of electric wire, vertical interface of extend through two halves lamp socket is done the platform of electric wire outlet of can obturaging.Thereby can also make sealing to whole lamp socket.It is together engaged that two halves place the lamp socket of electric wire, and lamp socket has also just assembled.

Color lamp is positioned at the top of exposed lead, between the bottom of color lamp and the exposed lead segment distance is arranged.In the bottom of color lamp, the inside lock pin of plastics is arranged, inner lock pin goes between therefrom that septum cordis leaves to two of color lamp.The central plane of corresponding lamp socket has two sides on the inner lock pin, have on two sides with the lamp socket central plane on the platform of the corresponding projection of groove, two posts are arranged at the bottom of inner lock pin, after color lamp is installed on the inner lock pin, every lead-in wire of color lamp is walked around two posts of inner lock pin bottom respectively, the lead-in wire that comes and goes is attached on the side of inner lock pin side by side, makes the color lamp lead-in wire of inner each side of lock pin become one toward two of returning.Also can be the bottom of inner lock pin, corresponding each root color lamp lead-in wire is respectively left the twice groove, and the color lamp lead-in wire, returns by other a groove to the back side by a groove again.Pasting the side of the inside lock pin of round two color lamps lead-in wire, can be that the plane also can be the curved surface of various moulding.

Be connected with the inside lock pin of color lamp, from the cylinder insertion of lamp socket the first half.Inner lock pin inserts together with color lamp after the lamp socket inside, and two color lamp lead-in wires that each side of inner lock pin comes and goes intersect in length and breadth with the lead that exposes, and can be vertical between them, also can become angle arbitrarily.When inner lock pin inserted, two color lamps lead-in wires that each side vertically moves laterally rolled exposed multicore cable smoothly, make exposed multicore cable have multiple spot to go between with color lamp and are connected.Along with the exposed lead of color lamp lead-in wire extruding, the fixture block of inner lock pin both sides projection supports the central plane that is pasting exposed lead on the lamp socket gradually.After the color lamp lead-in wire put in place with the lead jam-packed that exposes, the platform of projection fell into the groove that is positioned on the lamp socket central plane on the inner lock pin.Pasting the central plane of exposed lead on the lamp socket, lost the support of the protruding fixture block of inner lock pin both sides, the playback because the elastic force of lamp socket integral body is inwardly withdrawn, make two color lamp lead-in wires tightlyer crowded with exposed lead, and make the stress between inner lock pin and the lamp socket, between the lead that all focuses on two color lamp lead-in wires and expose, two color lamp lead-in wires that come and go on two sides of inner lock pin, compress the lead that exposes on the lamp socket central plane respectively, final two color lamps lead-in wires that come and go link together with the lead jam-packed that exposes.The groove that the central plane of lamp socket is left has blocked protruding fixture block simultaneously, makes inner lock pin can not withdraw from together with color lamp, thereby has guaranteed the long-term reliability that the color lamp seat is electrically connected.

The cylinder of lamp socket the first half or hold the pawl of color lamp tightly makes color lamp not rock, and has also guaranteed the reliability that connects between the electric wire.When changing color lamp, two plastics grabs are backed off from the face that it hooks, make the two halves lamp socket separately, just can change.

The two halves of three line lamp sockets are different, wherein half is the same with the lamp socket of two lines, second half groove of placing electric wire has been deepened one times, two wires are put in the inner stack of groove, in order to allow the exposed lead in the bottom wire be convenient to extend on the lamp socket central plane, the edge of the lamp socket central plane that is connected with the groove of placing electric wire can fall into fillet, perhaps leaves a skewed slot etc.The groove of placing exposed lead termination is slightly wideer, more deeply, after the plane of passing through nuditing wire at lamp socket center is also leaned on slightly a bit.Other spot sizes have some adjustment slightly.Total moulding, the structure of the lamp socket of three lines and the lamp socket of two lines is similar.

For the color lamp seat of placing grain of rice shape fairy light or light-emitting diode, can do weak point to cylindrical portions may, the luminous site is exposed, can not want the cylinder of lamp socket the first half etc. yet.Top at inner lock pin, do the several pawls that can hold riziform fairy light or light-emitting diode tightly etc., suitably do greatly on the top of inner lock pin, covers the insertion mouth of the inside lock pin on real the latter half lamp socket completely, and the interior inside lock pin of the remainder of inner lock pin and common lamp socket is identical.For common color lamp, some color lamp seat also can be made of one pawl of the cylinder of the fixedly color lamp of lamp socket the first half or part cylinder or several bendings etc. with inner lock pin.

Utilize this color lamp seat hand assembled to become Color lamp string etc.Can also utilize special-purpose machinery directly the lamp socket of electric wire, bulb and injection formed, inner lock pin, assembling connects into a string color lamp seat that installs lamp automatically, and color lamp seat part can realize the automation assembling.They are inserted with plug, tail again and the long electric wire of grouping etc. is assembled into complete Color lamp string.After other parts energy automation assemblings of Color lamp string, whole Color lamp string just can all be realized the automation assembling.

Have the color lamp seat of binding post to compare with intubate, core-inset type, the utility model is at the inner position of placing electric wire of lamp socket, and two places have used the positioning principle of the corresponding hard corner angle of cord of brand-new bending, have guaranteed that pulling wire does not come out.The utility model has also adopted 1, exposed lead termination extruding bending has been fixed, perhaps walk around a truncated rectangular pyramids after, it is fixing etc. to push bending again, and exposed lead two ends all are fixed; 2, between color lamp lead-in wire and the exposed multicore cable, realize rolling after the flattening, become the multiple spot connection; 3, each root color lamp lead-in wire has round two positions to be connected with the lead that exposes; 4, after color lamp lead-in wire and the wire squeezes of exposing put in place, back down the platform of the projection on the inside lock pin of lamp socket median plane, enter in the stopper slot, lamp socket median plane bounce-back playback, secondary makes color lamp lead-in wire and the wire squeezes of exposing get tighter, and make the stress between inner lock pin and the lamp socket, focus between two color lamps lead-in wire and the lead that exposes.These four measures have constituted the electrical connection principle of brand-new color lamp seat.New electrical connection principle has improved the reliability that Color lamp string is electrically connected comprehensively, and the electric wire of having avoided intubate, core-inset type to have the color lamp seat of binding post often to have contacts unstable phenomenon and takes place.Intubate, core-inset type have the color lamp seat of binding post, the phenomenon that often has lock pin to come off together with color lamp, and color lamp of the present utility model can not come off.Intubate, core-inset type have the color lamp seat of binding post can not connect other Decorative shells etc. again, and color lamp seat of the present utility model directly just can connect other Decorative shell, cover etc.Main is the binding post that the utility model has saved the electric wire termination, has saved valuable copper resource.Also saved the making terminal, terminal is connected with the electric wire termination, multiple working procedures such as terminal transportation, stock.Color lamp string of the present utility model, assembling become very simply, efficient is higher, greatly reduce the production cost of Color lamp string.The utility model is no matter from structure, the principle of color lamp seat in a word, still the Color lamp string assembling is simple efficient, save material, reduce technology, and many-side such as reliability of products all has tangible advance, and make Color lamp string can realize partial automation assembling production, realize whole automation assembling productions for Color lamp string and established solid foundation, so the utility model has promoted the technological progress of Color lamp string greatly.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Four, description of drawings

Fig. 1, half the structural representation of three-dimensional contouring that is that lamp socket vertically separates on the utility model color lamp seat.

Fig. 2, be the structural representation of the three-dimensional contouring of inner lock pin on the utility model color lamp seat.

Five, embodiment

The bottom of groove among Fig. 1 (1) is and the isodiametric face of cylinder of electric wire, and the width of groove (1) equals the diameter of electric wire, and the degree of depth of groove (1) equals or slightly greater than the diameter of electric wire.The top end face of electric wire plastic peel withstands on the top end face (2) of top one section groove (1) of placing electric wire.Electric wire is pushed piecemeal to be placed on, a left side, in following three sections linear grooves (1).Electric wire is drawn from the side openings (8) of groove (1).The inboard intersection that each section placed the groove (1) of electric wire is the rib (6) of perpendicular type, above on the outside inwall of one section groove (1) of placing electric wire, the rib (16) of 0.3 millimeter high projection of twice is arranged.The inwall at each position of rib (6) and rib (16) and groove (1) is fixed on electric wire in the groove jointly firmly.The exposed lead that stretches out from the electric wire top end face is pasting plane (7) from the end face (2) of groove and is extending to groove (4), and cross-arm and is placed on the groove (4).Also can be behind a circle along rectangle platform (3), cross-arm and is placed on the groove (4) again.Exposed lead termination by rectangle platform (3) and with it the lamp socket periphery of corresponding projection block, can not be laterally mobile up and down.Inboard from three sections linear grooves (1), extend the rectangle platform (5) that extends through two halves lamp socket interface, the left side of groove (4) is to the distance of the longitudinal axis of cylinder (9), than the right of rectangle platform (5) distance, shortly go out the width of exposed lead after by jam-packed to the longitudinal axis of cylinder (9).Other both sides of groove (4) go out same width than rectangle platform (5) is wide.The bottom surface of groove (4) is to the distance of lamp socket interface (14), than the end face of rectangle platform (5) distance to lamp socket interface (14), goes out the thickness of exposed lead after compacted or bigger greatly.The lamp socket of two lines other half be the same with Fig. 1, be equivalent to longitudinal axis Rotate 180 degree angle along half cylinder (9), copying half lamp socket in addition, is the lamp socket of a folding for the base with interface, and the base (15) of two halves lamp socket interface links together.When the two halves lamp socket is interlocked.Rectangle platform (5) on second half lamp socket is pressed onto in the groove (4), and exposed lead termination is squeezed into three roads by groove (4) and rectangle platform (5) and bends, and is fixed firmly.Can also not want rectangle platform (5) and groove (4), only in the position of groove (4), do a rectangle platform again, reserve the slit that can squeeze into electric wire between this and the rectangle platform (3), exposed lead termination is along this rectangle platform on rectangle platform (3) and next door, after a circle or half-turn, exposed lead termination squeezed between this and the rectangle platform (3) reserve in the slit, can fix the lead termination that exposes equally.One section outside of placing the groove (1) of electric wire in the above, do the plastic hook (11) of an extend through two halves lamp socket interface, place the hole (12) of loosing core and passing through of doing formation plastic hook hook face in the groove (1) of electric wire, electric wire is put into after the groove (1), and hole (12) are sealed by electric wire.When the two halves lamp socket was interlocked, plastic hook (11) was hooked on the table top of reserving at the back side, limit (13) along the limit (13) of two halves lamp socket interface.Plastic hook also can be made in limit (13) one sides etc.The lamp socket that separates for two halves, in correspondence with each other plastic hook and platform are done in the position on the base (15) of interface.

The groove (17) of Fig. 2, middle inner lock pin both sides is guided to two lead-in wires of color lamp the both sides of inner lock pin respectively, and two lead-in wires of color lamp extend to the bottom of inner lock pin along the plane of both sides, and the pillar (18) of walking around inner lock pin bottom respectively returns afterwards.Fallen into fillet between the bottom surface of inner lock pin and the side, walked around pillar (18) lead-in wire afterwards of inner lock pin bottom, smoothly after the bending, the termination of lead-in wire is placed on the plane of both sides along fillet.Pasting two sides of round two lead-in wires, it is the platform of the projection on inclined-plane (19) that a bottom is respectively arranged.The groove (10) that is positioned on the lamp socket central plane among platform (19) and Fig. 1 of projection is corresponding.The platform (19) of projection also can be made in the another side of groove (17).Be connected with the color lamp of inner lock pin, after cylinder (9) insertion, two lead-in wires that come and go on two sides of inner lock pin, longitudinal rolling is attached to the exposed lead on the lamp socket central plane (7) sidewards, the platform (19) of projection is opened lamp socket central plane (7) simultaneously to supported on both sides, after two lead-in wires that both sides come and go on the inner lock pin put in place with the lead jam-packed that exposes, the platform (19) of projection falls into the groove (10) that is positioned on the lamp socket central plane, the central plane of lamp socket (7) bounce-back playback, make two lead-in wires tightlyer crowded with exposed lead, and make the stress between lamp socket and the inner lock pin, between the lead that concentrates on two lead-in wires and expose, guaranteed the reliability that is electrically connected.

The lamp socket two halves of three wires are different, and wherein half is the same with the lamp socket of two lines.The groove (1) of half each section placement electric wire is deepened one times in addition, and two wires are placed in stack in the groove (1).Above the edge of end face (2) of one section groove (1) of placing electric wire, can fall into fillet or leave Yi Tiaogou, allow the nuditing wire in the bottom wire extend on the central plane of lamp socket.Because exposed lead is two and has leaned against together, is again multiple cord, the varied in thickness after being rolled or pushing is little, so the width of groove (4) and the degree of depth only need strengthen a bit, lamp socket central plane (7) moves a bit backward.The size at other positions of this half lamp socket is done some slightly and is adjusted, the lamp socket of the lamp socket of three wires and two lines, and moulded is similar with structure.

For grain of rice shape fairy light or light-emitting diode etc., can be on the top end face (20) of inner lock pin, after perhaps increasing top end face (20) a bit, do the pawl of several card grain of rice shape fairy lights or light-emitting diode etc. etc. again, correspondingly on the lamp socket remove semicircular cylinder (9), thereby be made into the lamp string of grain of rice shape fairy light.Common color lamp also can be the semicircular cylinder on the lamp socket among Fig. 1 (9), and two halves lump together, and are made of one with inner lock pin.Perhaps the pawl and the inner lock pin of card color lamp are made of one.Lamp socket among Fig. 1 can only keep the latter half.

Claims (1)

1, the color lamp seat of non-binding post on a kind of Color lamp string, the color lamp seat comprises three-way and two lines, the color lamp seat is made up of lamp socket and two parts of inner lock pin, color lamp is fixed in the color lamp seat, two of color lamp lead-in wires are realized being electrically connected with the lead of Color lamp string respectively in the color lamp seat, it is characterized in that: lamp socket is that vertically front and back separate, the base of lamp socket interface links together, perhaps the two halves lamp socket separates mutually, the hook that extends through interface is arranged on the lamp socket, the back side of lamp socket has and hook platform in correspondence with each other, the two halves lamp socket is in the same place by hook and platform are engaged, the two halves of two line lamp sockets are the same, after the two halves lamp socket is interlocked, the longitudinal centre line that is equivalent to lamp socket is an axle, the two halves lamp socket becomes the angle of 180 degree mutually, the first half of half lamp socket is the semicircular cylinder that vertically separates, or can embrace the part cylinder of color lamp or the pawl of several bendings, the end on the interface of half lamp socket the latter half, side, three positions on the side, the groove that three sections straight placement electric wires are arranged respectively, pasting three sections inner side edges of placing the groove of electric wire, a platform that exceeds interface is arranged, there is the central plane that is lower than interface at the center of lamp socket, fluted on the central plane, the position, middle and lower part on other one side of central plane, the platform that a projection is arranged, there is a groove that is lower than the placement nuditing wire top of central plane in the outside of platform, after the two halves lamp socket is interlocked, exceed the platform of interface on second half lamp socket, be inserted in the groove of placing the nuditing wire top, the top of nuditing wire is stressed in groove, the central plane of corresponding lamp socket has two sides on the inner lock pin, have on two sides with the lamp socket central plane on the platform of the corresponding projection of groove, the bottom of inner lock pin has two posts or corresponding each root color lamp lead-in wire that the twice groove is respectively arranged, after color lamp is installed on the inner lock pin, every lead-in wire of color lamp is walked around two posts of inner lock pin bottom respectively or is put into groove, the lead-in wire that comes and goes is attached on the side of inner lock pin side by side, inner lock pin inserts after the lamp socket inside together with color lamp, the platform of projection falls in the groove on the lamp socket central plane on the inner lock pin, two color lamp lead-in wires that come and go on two sides of inner lock pin, compress the exposed lead on the lamp socket central plane respectively, the two halves of three-way lamp socket are different, wherein the degree of depth of the groove of half three sections straight placement electric wires has increased by one times, some color lamp seat, the pawl of the cylinder of the fixedly color lamp of the first half of lamp socket or part cylinder or bending and inner lock pin have been made one.

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