CN112524581A

CN112524581A - Bottom electricity-taking conductive plate, track lamp and production method of conductive plate

Info

Publication number: CN112524581A
Application number: CN202011511338.5A
Authority: CN
Inventors: 刘洪�
Original assignee: Shenzhen Excellence Huayu Circuit Co ltd
Current assignee: Shenzhen Excellence Huayu Circuit Co ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-03-19

Abstract

The invention relates to the field of lighting equipment, and the conducting plate comprises a substrate and conducting strips, wherein the number of the conducting strips is two or three, the substrate is a magnetic material member, the conducting strips extend along the length direction of the substrate, a gap is formed between every two adjacent conducting strips, a first insulating layer is bonded on one side of the substrate, the conducting strips are bonded on one side, back to the substrate, of the first insulating layer, and the thickness of the first insulating layer is 0.15-0.3 mm. By adopting the conductive plate provided by the invention, the problem of short circuit in use caused by insulation failure caused by displacement of the first insulating layer is solved; the bottom electricity-taking conductive plate provided by the invention is used for supplying power to the light source, and the distance between the light source and the substrate is only the thickness of the first insulating layer, namely 0.15-0.3 mm, and is far smaller than the distance between the light source and the substrate in the prior art, so that the magnetic force between the light source and the substrate is enhanced, and the adsorption effect of the substrate on the light source is enhanced.

Description

Bottom electricity-taking conductive plate, track lamp and production method of conductive plate

Technical Field

The invention relates to the technical field of lighting equipment, in particular to a conductive plate with bottom electricity taking, a track lamp and a production method of the conductive plate.

Background

At present, the bottom electromagnetic attraction track is generally combined by an iron plate and a PCB. The PCB circuit board is used for the light source to transmit electric power, an iron plate is arranged below the PCB circuit board, insulating highland barley paper used for insulation is arranged between the PCB circuit board and the iron plate, and a magnet is arranged on the light source to prevent the light source from being separated from the track.

The currently used PCB circuit boards can be divided into single-sided conductive PCB boards and double-sided conductive PCB circuit boards. When the single-sided conductive PCB is used as a conductive carrier, the tracks are connected by a track connector to ensure electrical intercommunication, so that the light source can only slide in a single track. When the double-sided conductive PCB is used as a conductive carrier, insulating highland barley paper is used for electrical insulation between the iron plate and the PCB; one side of the PCB circuit board is provided with a conductive strip, the other side of the PCB circuit board is provided with a bonding pad, the two sides of the PCB circuit board are conducted up and down through a metal hole, the bonding pad can be connected or connected with a wiring terminal to realize circuit communication between the two PCB circuit boards, and the light source can freely slide in the whole track system.

The power-taking mode of combining the iron plate and the PCB at present needs to be manually assembled with the PCB and the insulated highland barley paper and then assembled into a track, a circuit short circuit can be caused by errors during assembly in the operation process, and the PCB is separated between the light source and the iron sheet, so that the thickness of the PCB used at present is 1.0mm at least, and the magnetic force between the magnet in the light source and the iron plate can be influenced.

Disclosure of Invention

The invention aims to: the bottom electricity-taking and conducting plate is provided aiming at the problems that the insulating highland barley paper in the prior art is not fixedly connected with a conducting bar or an iron plate, and the displacement of the insulating highland barley paper can be caused when manual installation is adopted, so that a passage is formed between the iron plate and a double-sided conducting PCB, short circuit occurs during use, and the magnetic force between a light source and the iron plate can be influenced by the PCB at intervals between the iron plate and a track lamp.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a current conducting plate of electricity is got to bottom, includes base plate and busbar, the quantity of busbar is two or three, the base plate is the magnetic material component, the busbar extends and has the clearance between two adjacent busbars along the length direction of base plate, one side of base plate bonds and has first insulating layer, the busbar bonds in the one side of first insulating layer dorsad base plate, the thickness on first insulating layer is 0.15 ~ 0.3 mm.

The substrate, the first insulating layer and the conductive strip are bonded into a whole, so that the problem of short circuit in use caused by insulation failure caused by displacement of the first insulating layer is solved; the bottom electricity-taking conductive plate provided by the invention is used for supplying power to the light source, the distance between the light source and the substrate is only the thickness of the first insulating layer, namely 0.15-0.3 mm, in the prior art, the distance between the light source and the substrate is the sum of the thicknesses of the PCB and the insulating highland barley paper, and the value of the distance exceeds 1 mm; by using the invention, the distance between the light source and the substrate is reduced, so that the magnetic force between the light source and the substrate is enhanced, and the adsorption effect of the substrate on the light source is enhanced.

As a preferable scheme of the invention, the thickness of the conductive strip is 0.035-0.35 mm.

As a preferable scheme of the invention, the conductive strip is a copper or copper alloy material structural member, and the surface of the conductive strip is covered with a protective film.

In a preferred embodiment of the present invention, the protective film is a nickel-tin alloy plating layer.

The protection film of nickel-tin alloy cladding material conduct the busbar can prevent the wearing and tearing that cause the busbar in the use, and nickel-tin alloy cladding material is black moreover, can cover the mauve of copper busbar, avoids the user to think the circuit exposes outside, arouses user's uneasiness.

As a preferable scheme of the present invention, two opposite surfaces of the substrate are both bonded with a first insulating layer, one side of the first insulating layer, which faces away from the substrate, is bonded with two or three conductive strips, the number of the conductive strips on two sides of the substrate is equal, the conductive strips at opposite positions on two sides of the substrate are electrically connected through at least two points to form a loop, and a gap is formed between adjacent conductive strips on the same side of the substrate.

The conductive strips at the corresponding positions on the two sides of the substrate are communicated to form a closed loop, namely, the two conductive strips are connected in parallel in a circuit, so that the resistance can be reduced, and a larger load can be borne.

As a preferred scheme of the present invention, conductive materials are inserted into a plurality of positions between two side surfaces of the substrate, the conductive strips at corresponding positions on two sides of the substrate form a loop through at least two conductive materials, and second insulating layers are disposed between the conductive materials and the substrate, and electrically isolate the substrate from the conductive materials.

As a preferred scheme of the invention, two sides of the current conducting plate are respectively a current conducting surface and a welding disk surface, two ends of the welding disk surface along the length direction of the substrate are respectively connected with a wiring terminal, and the wiring terminals of the wiring terminals are respectively and electrically connected with a single conductive strip.

A track lamp comprises a plurality of tracks with U-shaped sections and a light source with magnets arranged inside, and is characterized by further comprising the conductive plates according to claim 7, wherein the length of each conductive plate is matched with that of each track, two side faces of each groove of each track are connected with the conductive plates in a sliding mode, a connecting piece is connected between connecting terminals of two adjacent conductive plates, and the connecting pieces are used for connecting circuits of the two adjacent conductive plates; the light source is arranged in the groove, the conductive plate and the side face of the groove of the track form a sliding groove with an opening at the upper part, the light source can slide in the sliding groove, the conductive surface of the conductive plate faces one side of the light source, and the conductive plate is electrically connected with the light source.

The conducting plates in the multiple tracks are electrically connected through the connecting terminals located on the welding faces of the conducting plates, the situation that a track connector is used for connecting circuits between adjacent conducting plates is avoided, the welding faces and the light sources are located on different sides of the conducting plates, and sliding routes of the light sources in the sliding grooves are not obstructed, so that users can freely move the light sources in the multiple tracks.

A production method of a conductive plate comprises the following steps when the conductive plate is produced:

s1: cutting, namely cutting the base material of the whole plate into a base plate with a corresponding size;

s2: pressing, namely pressing a first insulating layer and a conductive strip on the surface of the substrate obtained by blanking;

s3: pattern transfer, transferring the circuit pattern to the conductive strips on the surface of the substrate;

s4: etching the circuit;

s5: covering a conductive film on the conductive strip by adopting an electroplating or OSP or immersion gold mode;

s6: shooting holes, routing boards and V-carving.

As a preferable aspect of the present invention, in producing the above conductive plate, between the step S1 and the step S2, there is further included a step S11: drilling a first through hole on the substrate and filling the first through hole with an insulating material;

between step S2 and step S3, step S21 is further included: secondary drilling, namely drilling a second through hole on the insulating material in the step S11 and coating a conductive material on the surface of the second through hole;

step S7 is also included after step S6: and welding a connecting terminal on the surface of the welding disk.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the conductive plate provided by the invention can enhance the magnetic force between the light source and the substrate and prevent the light source from separating from the track; the current conducting plate and the conducting bar are integrated together, the structure is simple, the installation is convenient, and short circuit accidents caused by artificial installation errors can be avoided; the light source can be moved freely within the plurality of tracks.

2. The surface of the conductive bar is covered with a layer of protective film which can cover the mauve of the copper conductive bar, so that the user is prevented from considering that the circuit is exposed outside and causing uneasiness.

3. The conducting strips are uniformly arranged on two sides of the polar plate, and the conducting strips at corresponding positions on the two sides are communicated to form a closed loop, namely the two conducting strips are connected in parallel in a circuit, so that the resistance can be reduced, and a larger load can be borne.

4. The production method of the current-conducting plate provided by the invention can automatically produce the current-conducting plate integrated by the base plate and the conductive bar in batches, and has high production efficiency and low batch production cost.

Drawings

FIG. 1 is a perspective view of embodiment 1 of the present invention;

FIG. 2 is a structural view of embodiment 2 of the present invention;

FIG. 3 is a sectional view at a second through hole of embodiment 2 of the present invention;

FIG. 4 is a schematic perspective view of embodiment 3 of the present invention;

fig. 5 is a sectional view of the substrate at the first through hole after the step S2 is completed in embodiment 4 of the present invention;

fig. 6 is a sectional view of the substrate at the first through hole after the step S3 is completed in embodiment 4 of the present invention;

fig. 7 is a cross-sectional view of the substrate at the second through-hole after the second through-hole is processed in step S4 in example 4 of the present invention;

FIG. 8 is a cross-sectional view of the substrate at the second through-hole after the copper deposition operation in step S4 is completed in example 4 of the present invention;

fig. 9 is a sectional view of the substrate at the second through hole after the step S6 is completed in embodiment 4 of the present invention;

fig. 10 is a schematic perspective view of embodiment 4 of the present invention after step S6 is completed;

FIG. 11 is a sectional view of the substrate at the second through-hole after completion of the plating of the protective film in embodiment 4 of the invention;

icon: 1-a conductive plate; 11-a substrate; 12-a conductive strip; 13-a first insulating layer; 2-a second insulating layer; 3-a conductive film; 4-orbit; 5-a light source; 6-a second via; 7-chute.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.

Example 1

As shown in fig. 1, a bottom electricity-taking and conducting plate 1 includes a substrate 11 and a conducting bar 12 made of magnetic materials, where the substrate 11 may be an iron plate or other plate capable of generating magnetic attraction with a magnet, the upper surface of the substrate 11 is one side, and the lower surface of the substrate 11 is the other side, and the direction in which the conducting plate 1 is inserted into a track when being installed is the length direction of the substrate 11; the conductive strips 12 are made of copper or copper alloy, the thickness of each conductive strip 12 is 0.035-0.35 mm, the number of the conductive strips 12 can be two or three, a gap is formed between every two adjacent conductive strips 12, and the number of the conductive strips 12 on each side is determined according to the direct current or alternating current adopted by the light source 5. A first insulating layer 13 with a thickness of 0.15-0.3 mm is bonded between the substrate 11 and the conductive strip 12 in a pressing manner, the first insulating layer 13 may be a black prepreg, the first insulating layer 13 forms an open circuit between the substrate 11 and the conductive strip 12, and the conductive strip 12 extends along the length direction of the substrate 11.

Example 2

As shown in fig. 2 and 3, the bottom-powered conductive plate 1 only shows a partial length thereof, and includes a substrate 11 made of a magnetic material, a first insulating layer 13 and a conductive strip 12, where the substrate 11 may be an iron plate or other plate capable of generating magnetic attraction with a magnet, and an upper surface of the substrate 11 is one side and a lower surface thereof is the other side; the direction in which the conductive plate 1 is inserted into the rail when mounted is the longitudinal direction of the substrate 11. The first insulating layer 13 may be a prepreg with a thickness of 0.15-0.3 mm, the first insulating layer 13 is bonded to the upper and lower surfaces of the substrate 11 by a press-fit method, the conductive strip 12 is made of copper or a copper alloy material, and the conductive strip 12 is bonded to the surface of the first insulating layer 13 on the upper and lower surfaces of the substrate 11 by a press-fit method and extends along the length direction of the substrate 11; the number of the conductive strips 12 on the upper side and the lower side of the substrate 11 is consistent, and is two or three, and the number of the conductive strips 12 on each side is determined according to the direct current or the alternating current adopted by the light source 5; any two conducting strips 12 on the same side have a gap therebetween to form an open circuit; the first insulating layer 13 on both sides of the substrate 11 forms an open circuit between the substrate 11 and the conductive strips 12 on both sides. At least two second through holes 6 penetrate through the conductive strips 12 at the corresponding positions on the upper and lower surfaces of the substrate 11, the surfaces of the second through holes 6 are covered with conductive materials, the conductive materials can be the same as the conductive strips 12, the conductive metal layer connects the two conductive strips 12 at the corresponding positions on the upper and lower sides of the substrate 11 to form a closed loop, a circle of second insulating layer 2 is wrapped outside the second through holes 6, the second insulating layer 2 can be epoxy resin, and the second insulating layer 2 enables the substrate 11 and the conductive metal layer to form an open circuit; the upper surface of the substrate 11 is a conductive surface, the lower surface is a welding pad surface, the surface of the conductive strip 12 of the conductive surface is electroplated with a conductive film 3 without metallic luster, and the conductive film 3 can be tin-nickel alloy; conducting film 3 can prevent the wearing and tearing of conducting strip 12 in normal use process, plays the effect of protection circuit, and tin-nickel alloy is black moreover, can cover the mauve of copper conducting strip 12, avoids the worry of user to naked copper circuit.

Example 3

A track 4 lamp, as shown in fig. 4, comprises a light source 5 and a plurality of connected tracks 4, wherein the situation that only two tracks 4 are connected is shown in the figure, the sections of the two tracks 4 are both U-shaped, the lower parts of the inner side surfaces of grooves of the two tracks 4 are slidably connected with a conductive plate 1 which is provided by the technical scheme in embodiment 2 and takes electricity from the bottom, and the conductive surface of the conductive plate 1 faces upwards; the conducting plate 1 and the side surface of the groove of the track 4 enclose a chute 7 with an opening at the upper part, and the light source 5 slides in the chute 7; the conductive strips 12 on the conductive plate 1 are electrically connected with the light source 5 and provide power for the normal operation of the light source 5; a magnet is arranged in the light source 5, the magnet and the substrate of the conductive plate 1 generate magnetic force and attract each other, and the light source 5 is in contact with the conductive plate 1 by the magnetic force and keeps good electric connection; connecting terminals are welded at the front end and the rear end of the welding disc surface of the current conducting plate 1, the wiring end of each wiring terminal is electrically connected with a single conductive bar 12, each connecting terminal can be used for connecting an external power supply and can also be used for being electrically connected with the connecting terminals of other current conducting plates 1, a connecting piece is connected between the welding terminals of two adjacent current conducting plates 1, and the connecting pieces are used for communicating the circuits of the conductive bars 12 at corresponding positions on the two adjacent current conducting plates 1 so that the light source 5 can freely slide in a plurality of connected tracks 4 and keep normal work.

Example 4

As shown in fig. 5 to 11, a method for producing a bottom-powered conductive plate 1 is used for producing the conductive plate 1 provided by the technical scheme in embodiment 2, and includes the following steps:

s1: cutting, namely blanking a whole plate into an iron plate with a required size;

s2: drilling a first through hole in the iron plate according to a design position and filling epoxy resin in the first through hole;

s3: pressing, namely using a black prepreg as a bonding material, and covering copper foils on the upper and lower surfaces of an iron plate to obtain an iron-based copper-clad plate;

s4: secondary drilling, namely drilling a second through hole 6 in the epoxy resin filled in the step S2, and coating a layer of copper on the surface of the second through hole 6 through a copper deposition process;

s5: transferring the circuit pattern, namely transferring the circuit pattern to the surface of the iron-based copper-clad plate;

s6: etching the circuit, etching the circuit pattern with the etching solution to obtain the conductive strip 12;

s7: electroplating a conductive film, namely electroplating a layer of conductive film 3 on the conductive surface;

s8: target hole drilling, routing and carving, V carving and shipment inspection.

It should be noted that, in the embodiment 2, a double-sided conductive bottom-powered conductive plate is provided, in the embodiment 1, a single-sided conductive bottom-powered conductive plate is provided, and steps S2 and S4 are omitted when the conductive plate in the embodiment 1 is produced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a current conducting plate of electricity is got to bottom, includes base plate (11) and conducting strip (12), the quantity of conducting strip (12) is two or three, base plate (11) are the magnetic material component, conducting strip (12) extend and have the clearance between two adjacent conducting strip (12) along the length direction of base plate (11), its characterized in that, one side bonding of base plate (11) has first insulating layer (13), conducting strip (12) bond in one side that first insulating layer (13) dorsad base plate (11), the thickness of first insulating layer (13) is 0.15 ~ 0.3 mm.

2. A bottom-powered conductive plate as claimed in claim 1, wherein said conductive strips (12) have a thickness of 0.035 to 0.35 mm.

3. A bottom-powered conductive sheet as claimed in claim 2, wherein said conductive strip (12) is a copper or copper alloy structural member, and said conductive strip (12) is covered with a protective film.

4. A bottom-powered conductive plate as claimed in claim 3, wherein said protective film is a nickel-tin alloy plating.

5. A bottom-feeding conductive plate as claimed in claims 1 to 4, wherein a first insulating layer (13) is bonded to each of two opposite surfaces of said substrate (11), two or three conductive strips (12) are bonded to one side of said first insulating layer (13) opposite to said substrate (11), the number of conductive strips (12) on both sides of said substrate (11) is equal, and the conductive strips (12) at opposite positions on both sides of said substrate (11) are electrically connected to each other at least two places to form a loop, and there is a gap between adjacent conductive strips (12) on the same side of said substrate (11).

6. The bottom-powered conductive plate of claim 5, wherein conductive materials are arranged between two side surfaces of the substrate (11) in a plurality of positions, the conductive strips (12) at corresponding positions on two sides of the substrate (11) form a loop through at least two conductive materials, a second insulating layer (2) is arranged between the conductive materials and the substrate (11), and the substrate (11) is electrically isolated from the conductive materials by the second insulating layer (2).

7. The conducting plate for bottom electricity taking according to claim 6, wherein the conducting plate has two sides, namely a conducting surface and a welding pad surface, the two ends of the welding pad surface along the length direction of the substrate (11) are respectively connected with a connecting terminal, and the connecting terminals of the connecting terminals are respectively and electrically connected with the single conducting bar (12).

8. A track lamp comprises a plurality of tracks (4) with U-shaped cross sections and a light source (5) with a magnet arranged inside, and is characterized by further comprising a conductive plate according to claim 7, wherein the length of the conductive plate is matched with the length of the tracks, two side faces of each groove of each track (4) are connected with the conductive plate in a sliding mode, a connecting piece is connected between connecting terminals of two adjacent conductive plates, and the connecting piece is used for communicating circuits of the two adjacent conductive plates; the light source is characterized in that the conductive plate and the side face of the groove of the track (4) form a sliding groove (7) with an opening at the upper part, the light source (5) can slide in the sliding groove (7), the conductive surface of the conductive plate faces one side of the light source (5), and the conductive plate is electrically connected with the light source (5).

9. A method for producing a conductive plate, comprising the steps of, when producing the conductive plate of claim 5:

s1: cutting, namely cutting the base material of the whole plate into a base plate (11) with a corresponding size;

s2: pressing, namely pressing a first insulating layer (13) and a conductive strip (12) on the surface of a substrate (11) obtained by blanking;

s3: pattern transfer, which transfers the circuit pattern to the conductive strips (12) on the surface of the substrate (11);

s4: etching the circuit;

s5: a conductive film (3) is coated on the conductive strip (12) in an electroplating or OSP or immersion gold mode;

s6: shooting holes, routing boards and V-carving.

10. The conductive plate processing method of claim 9, further comprising, between step S1 and step S2, step S11, in producing the conductive plate of claim 7: a first drilling step of drilling a first through hole in the substrate (11) and filling the first through hole with an insulating material;

between step S2 and step S3, step S21 is further included: secondary drilling, namely drilling a second through hole (6) in the insulating material in the step S11 and coating a conductive material on the surface of the second through hole (6);