CN205001933U - Light string - Google Patents

Abstract

The utility model discloses a lamp string, which comprises a main cable, the first end of which is fixedly connected with a male plug, and the second end is fixedly connected with a female plug; a plurality of lamp holder assemblies connected in parallel to the main cable, each Each lamp holder assembly includes a pair of cables, and the lamp holder assembly is connected to the main cable through the auxiliary cable; at the connection, the opposite sides of the conductor of the insulated core wire in the main cable are partially exposed, and the insulated core wire of the auxiliary cable The copper insert connected to the end of the conductor penetrates the exposed conductor and then is bent and clamped on the insulating core wire; the light source is installed in the plurality of lamp holder assemblies; the T-shaped joint is completely injection-molded Coated at the connection between the auxiliary cable and the main cable; the main cable is integrated, and the strength of the light string is enhanced; the connection between the auxiliary cable and the main cable is pierced and bent by copper inserts to achieve a reliable mechanical connection; it is beneficial to large mass production.

Description

a string of lights

technical field

The utility model relates to the field of lamp lighting, in particular to an all-weather waterproof hanging string lamp string used outdoors and a production method thereof.

Background technique

A light string, which is a combination of multiple parallel-connected light bulbs connected by wires and powered by a male plug inserted into a female plug, is often used for lighting and decoration.

The traditional light string is composed of multiple sections of cables, which are connected together by welding and other technical sections. The assembly work is intensive during production, the electrical performance is poor, and the insulation and sealing performance is poor. It is easy to leak electricity in outdoor rainy days, and there are safety hazards. There are a series of problems such as poor mechanical strength and easy disconnection.

Utility model content

In view of the above problems, the utility model proposes a light string, especially an all-weather waterproof string light string for outdoor use, which has the advantages of high strength, waterproof and safety.

The technical scheme that the utility model solves its technical problem adopts is:

A continuous main cable having a predetermined length, the main cable includes at least two insulated core wires, a male plug is fixedly connected to a first end thereof, and a female plug capable of matching the male plug is fixedly connected to a second end thereof, In order to connect multiple light strings end to end in series;

A plurality of lamp socket assemblies connected in parallel on the main cable, each of the lamp socket assemblies includes a sub-cable with a predetermined length, and the lamp socket assembly is connected to the main cable at a predetermined distance through the sub-cable Constitutes a mechanical connection and an electrical connection; the auxiliary cable includes two insulated core wires, at the connection, the opposite sides of the conductors of the insulated core wires in the main cable are partially exposed, and the insulated core wire conductors of the auxiliary cable The copper inserts connected at the ends penetrate the exposed conductors and then are bent and clamped on the insulated core wires;

a light source installed in the plurality of lamp holder assemblies;

The T-shaped connector completely covers the joint between the secondary cable and the main cable by injection molding.

Preferably, a joint lining is built in the T-shaped joint, and the joint lining is assembled by left and right side frames, and the conductor and the copper insert are wrapped in the joint lining.

Preferably, the shape and structure of the left frame and the right frame of the joint lining are the same.

Preferably, the left side is bridged with a longitudinal slot corresponding to the insulated core wire of the main cable.

Preferably, the left side is bridged with a transverse wire slot corresponding to the insulated core wire of the auxiliary cable.

Preferably, the main cable is covered with a jacket as a waterproof insulating layer.

Preferably, the lamp holder assembly includes a threaded lamp cap for accommodating the light source, and the threaded lamp cap is coated with a waterproof insulating shell formed of a soft material by insert injection molding.

Preferably, the bottom edge of the waterproof insulating housing protrudes to the outer surface of the light source, and the protrusion forms an interference fit with the outer surface of the light source.

Preferably, the main cable is 14.6 meters long, and the lamp holder assemblies are evenly distributed on the main cable at intervals of 0.6 meters.

Preferably, the T-shaped connector is provided with lifting lugs for hanging wires.

Different from the light string in the prior art which is welded by multiple shorter cables, the main cable constituting the skeleton of the light string in the utility model is continuous, and its advantages are: firstly, the cable is a whole, Instead of multi-section welding, the overall structural strength of the light string is enhanced, and the risk of leakage caused by light string breakage is reduced; the connection between the auxiliary cable and the main cable is made of copper inserts that penetrate and bend to achieve a reliable mechanical connection; Secondly, the use of the preset whole cable can significantly reduce the production process in production, save additional processes such as welding, effectively reduce costs, and facilitate large-scale automated production; in addition, the connection between the main and auxiliary cables The points are completely covered with T-shaped joints, which can effectively realize the waterproof and insulating function. Combined with the insulated lamp holder, the whole light string has excellent rainproof, waterproof and leakage-proof performance, which is suitable for outdoor lighting.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further explained.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the connection diagram of auxiliary cable and main cable of the utility model;

Fig. 3 is a three-dimensional structural schematic diagram when the insulating core wire of the main cable is partially exposed to the conductor;

Fig. 4, Fig. 5 and Fig. 6 are structural schematic diagrams of the front and back of the copper insert penetrating through the main cable insulated core wire conductor;

Fig. 7 is the structural representation of joint lining;

Fig. 8 is a schematic structural view of the left frame of the joint lining;

Fig. 9 is a schematic diagram of the three-dimensional structure of the assembly of the light source and the lamp holder;

Fig. 10 is a schematic diagram after the main cable is stripped of a predetermined length of waterproof insulating jacket;

Fig. 11 and Fig. 12 are schematic diagrams of processing the insulated core wire to strip off the insulating layer to partially expose the conductor.

detailed description

1 to 6, a light string 1 includes a continuous main cable 2 with a predetermined length, the main cable 2 includes three insulated core wires 20 of phase line, neutral line and ground line, the first end of which is fixed A male plug 28 is connected, and a female plug 29 that can match the male plug 28 is fixedly connected to the second end, so that multiple light strings 1 are connected in series end to end; multiple lamp socket assemblies connected in parallel to the main cable 2 3. Each lamp holder assembly 3 includes a secondary cable 30 with a predetermined length, and the lamp socket assembly 3 forms a mechanical connection and an electrical connection with the main cable 2 through the secondary cable 30 at a predetermined distance; The auxiliary cable 30 includes two insulated core wires of a phase line and a neutral line. At the connection, the opposite sides of the conductor 21 of the insulated core wire 20 in the main cable 2 are partially exposed, and the insulation of the auxiliary cable 30 The copper insert 32 connected to the end of the core wire conductor penetrates through the exposed conductor 21 and then is bent and clamped on the insulated core wire 20; the light source 33 is installed in the plurality of lamp holder assemblies 3; the T-shaped joint 4 , to completely cover the joint between the secondary cable 30 and the main cable 2 by injection molding.

Usually the main cable 2 uses a 3-core cable, which contains insulated core wires that are used as neutral wires, phase wires and ground wires respectively. The waterproof performance and safety of the string 1, the insulated core wire is covered with an insulating and waterproof protective jacket 22 to enhance the durability and applicability of the light string, considering that the lamp holder assembly 3 is suspended from the main cable 2 through the auxiliary cable 30 Below, the auxiliary cable 30 can be a 2-core cable, so that the auxiliary cable is more flexible, the light string will have a more beautiful appearance, and the light source 33 at its end can keep emitting light in a direction perpendicular to the ground. The main cable 2 can be selected from American standard SJTW18AWG, 16AWG or 14AWG.

During injection molding, it is inefficient to completely cover the connection between the auxiliary cable 30 and the main cable 2 through one injection, because the T-shaped joint 4 has a large volume and is difficult to cool and harden quickly, which will lead to It takes longer to process T-joints. Referring to Fig. 7 and Fig. 8, as a further technical improvement, a joint liner 40 is built in the T-shaped joint 4, and the joint liner 40 is assembled and spliced by left and right side frames 401, 402, and the conductor 21 and copper insert 32 are wrapped in the joint lining 40. In this way, the single injection amount can be reduced, and the cooling speed is significantly accelerated. This not only ensures the cooling speed, but also reduces the shrinkage of the rubber material during the cooling process, resulting in unsightly appearance.

Further, the shape and structure of the left frame 401 and the right frame 402 of the joint lining 40 are the same, which simplifies the production and mutual combination of the left and right frames. In order to further fix the insulated core wires of the main and auxiliary cables, the left side frame 401 is provided with a longitudinal slot 403 corresponding to the insulated core wire 20 of the main cable 2, and the left side frame 401 is provided with a corresponding insulated core wire of the auxiliary cable 30. The transverse trunking 404.

The lamp holder assembly 3 includes a threaded lamp cap 34 for accommodating a light source 33 , and a waterproof insulating shell 35 formed of a soft material is coated on the exterior of the threaded lamp cap 34 by insert injection molding. The use of threaded lamp holders has the advantages of convenient lamp replacement, better safety and firm installation. The waterproof and insulating casing 35 made of soft materials not only feels good, but also enhances the weather resistance of the light string. Referring to FIG. 9 , as a technical further improvement, the bottom edge of the waterproof insulating housing 35 protrudes to the outer surface of the light source 33 , and the protruding portion 36 forms an interference fit with the outer surface of the light source 33 . After the light source 33 is tightened, the outer shell of the soft material will be tightly wrapped on the surface of the light source 33 to further play the role of waterproof and dustproof.

According to needs, such as the number of bulbs and power, the main cable 2 has a predetermined length, and the auxiliary cables 30 connected to the lamp socket assembly 3 are evenly distributed on the main cable 2 at predetermined intervals. Preferably, the main cable 2 is about 14.6 meters long, and the lamp holder assemblies 3 are evenly distributed on the main cable 2 at an interval of about 0.6 meters, wherein the auxiliary cable 30 is about 8 centimeters long. In addition, in this embodiment, when the American standard is adopted, the lamp socket assembly 3 adopts the E26 standard lamp cap interface, while when the European standard is adopted, the lamp socket assembly 3 adopts the E27 standard lamp cap interface, and the light source 33 uses an incandescent bulb. The seat assemblies 3 all have a carrying capacity of at least 25W. The two ends of the main cable 2 are respectively fixedly connected with a male plug 28 and a female plug 29 . When a larger length is required, it is only necessary to connect multiple light strings in series. For the convenience of installation and fixing, the T-shaped connector 4 is provided with lifting lugs 42 for hanging wires. When the length is large, the light strings can be hung through the lifting lugs 42 to reduce the tension on the main cable 2 and prevent mechanical damage.

Referring to Fig. 10 to Fig. 12, the process of producing the light string of the present utility model, wherein Fig. 10 shows that according to the predetermined spacing, the jacket 22 with a certain length is cut off at intervals on the entire main cable 2, preferably 3-5 cm, Exposing the insulated core wire 20 therein; FIGS. 11 to 12 show that the insulation layer is stripped off the exposed insulated core wire 20 through a customized mold, and the conductor 21 is partially exposed. In this way, the copper insert 32 at the end of the auxiliary cable 30 can directly contact the conductor 21 of the main cable, and form mechanical and electrical connections by penetrating the conductor 21 and bending it.

The above are only the best embodiments of the utility model, and are not limitations of the utility model. The adjustments, modifications and combinations made to the above embodiments according to the concept of the utility model all fall within the protection scope of the utility model.

Claims (10)

1. a lamp string (1), is characterized in that comprising:

There is the continuous print leader cable (2) of predetermined length, described leader cable (2) comprises at least two bar insulation heart yearns (20), its first end is fixedly connected with public plug (28), the second end is fixedly connected with the female (29) that can mate with described public plug (28), so that many lamp string (1) head and the tail are connected in series;

Multiple lamp socket assembly (3) be connected in parallel on leader cable (2), lamp socket assembly (3) described in each includes the secondary cable (30) with a predetermined length, described secondary cable (30) comprises two bar insulation heart yearns, and described lamp socket assembly (3) to be consisted of with leader cable (2) with predetermined spacing described secondary cable (30) to be mechanically connected and to be electrically connected; In junction, the relative two side portions ground of the conductor (21) of the insulation core wire (20) in described leader cable (2) is exposed, and the copper plug (32) that insulation core wire conductor (31) end of described secondary cable (30) connects runs through the conductor (21) exposed and bends afterwards and be clamped on insulation core wire (20);

Light source (33), is arranged in described multiple lamp socket assemblies (3);

T connector (4), is fully coated on described secondary cable (30) and described leader cable (2) junction in the mode of injection mo(u)lding.

2. lamp string (1) according to claim 1, it is characterized in that being built-in with joint liner (40) in described T connector (4), described joint liner (40) is assembled by left and right side frame (401,402) and is put together, and described conductor (21) and copper plug (32) are all wrapped in described joint liner (40).

3. lamp string (1) according to claim 2, is characterized in that: the left frame (401) of described joint liner (40) is identical with the shape and structure of left side frame (402).

4. lamp string (1) according to claim 3, is characterized in that: described left frame (401) is provided with the longitudinal wire casing (403) corresponding with the insulation core wire of leader cable (2) (20).

5. lamp string (1) according to claim 3, is characterized in that: described left frame (401) is provided with the horizontal wire casing (404) corresponding with the insulation core wire of secondary cable (30).

6. lamp string (1) according to claim 1, is characterized in that being coated with the overcoat (22) as waterproof insulating layer outside leader cable (2).

7. lamp string (1) according to claim 1, it is characterized in that described lamp socket assembly (3) comprises the screwed socket (34) holding light source (33), and to be coated with by insert injection molding mode the waterproof insulation shell (35) that soft material makes in described screwed socket (34) outside.

8. lamp string according to claim 7, it is characterized in that: along the outer surface extending out to described light source (33), extension (36) and light source (33) described outer surface form interference fit at described waterproof insulation shell (35) end.

9. lamp string (1) according to claim 1, it is characterized in that long 14.6 meters of described leader cable (2), lamp socket assembly (3) is evenly distributed on leader cable (2) with the spacing of 0.6 meter.

10. lamp string (1) according to claim 1, is characterized in that described T connector (4) is provided with hanger (42).