Junction box for track lights

Abstract

The present invention discloses a junction box for track lights, which is used to connect the conductive strip on the track and the power cord of an external power supply to energize the conductive strip on the track. The track has a track groove, and the conductive strip is arranged on the bottom wall of the track groove. Clamping plates are arranged on both side walls of the track groove. The junction box for track lights includes an insulating housing and at least two conductive connection pieces. The insulating housing at least includes a clamping part for cooperating with the track groove. First clamping grooves are formed on both the left and right sides of the clamping part, and the first clamping grooves are used to cooperate with the clamping plates. A wire passing hole communicating with the inside of the insulating housing is formed on the insulating housing. The conductive connection pieces are installed inside the insulating housing, and one end of each conductive connection piece is exposed at the bottom of the clamping part and forms a contact head for abutting against the conductive strip. The disassembly and assembly of the junction box for track lights are relatively convenient, the use is more flexible, and good contact with the conductive circuit on the track can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of track lights, and particularly to a junction box for track lights. Background Art

[0002] A track light generally includes a track and a lamp. The track has a track groove, and a conductive bar (which can be made of copper or iron) is provided in the track groove. The conductive bar includes a live wire and a neutral wire, and a live wire and a neutral wire form a conductive circuit. To connect to an external power supply, a junction box is also provided on the track. The junction box connects the conductive circuit to an external power cord to conduct the conductive circuit. The lamp is fixedly or slidably mounted on the track groove, and a conductive terminal is provided at the joint of the lamp. During installation, the conductive terminal on the lamp contacts the conductive bar inside the track groove, thereby realizing the power-on of the lamp.

[0003] Currently, the junction boxes for track lights on the market are all fixed on the track by screw connection. The installation and disassembly of the junction box for track lights are relatively troublesome and not convenient to use. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a junction box for track lights that is relatively convenient to disassemble and assemble and has good contact.

[0005] The purpose of the present invention is achieved by adopting the following technical solutions:

[0006] A junction box for track lights is used to connect a conductive bar on a track and a power cord of an external power supply to energize the conductive bar on the track. The track has a track groove, and the conductive bar is provided on the bottom wall of the track groove. Clamping plates are provided on both side walls of the track groove. The junction box for track lights includes an insulating housing and at least two conductive connecting pieces. The insulating housing at least includes a clamping portion for cooperating with the track groove. First clamping grooves are opened on both the left and right sides of the clamping portion for cooperating with the clamping plates. A wire passing hole communicating with the inside of the insulating housing is opened on the insulating housing. The conductive connecting pieces are installed inside the insulating housing, and one end of the conductive connecting piece is exposed at the bottom of the clamping portion and forms a contact head for abutting against the conductive bar.

[0007] Further, the contact head is an outwardly arched contact head, and the bottom surface of the contact head is used for abutting against the conductive bar.

[0008] Further, the width dimension of the contact head is larger than the outer diameter of the conductive bar.

[0009] Further, the contact heads on adjacent two conductive connecting pieces are arranged in a staggered manner.

[0010] Further, a space is provided between the other end of the conductive connection piece and the bottom wall of the insulating housing, and a wire passing hole is formed in the other end of the conductive connection piece.

[0011] Further, a positioning blind groove is provided in the insulating housing, a notch is formed at the bottom of the clamping portion, the conductive connection piece is installed in the positioning blind groove, and the contact extends out of the clamping portion along the notch.

[0012] Further, the contact is also clamped in the positioning blind groove, and the bottom of the contact extends out of the clamping portion along the notch.

[0013] Further, the insulating housing further includes a plugging head connected to the clamping portion. One surface of the plugging head connected to the clamping portion is used for abutting against the end of the track, and the width dimension of the plugging head is the same as the width dimension of the track, and the height dimension of the plugging head is the same as the height dimension of the track.

[0014] Further, the insulating housing includes an upper housing and a lower housing. One of the upper housing and the lower housing is provided with a tenon, and the other is provided with a second card slot that is tightly matched with the tenon.

[0015] Further, the insulating housing further includes a positioning block. The conductive connection piece is arranged in the lower housing. Slots are provided on the opposite inner side walls of the lower housing. The positioning block includes a positioning portion and a limiting protruding portion. The opposite sides of the positioning portion are respectively tightly matched with the slots on the opposite inner sides of the lower housing. The limiting protruding portion is located at the bottom of the positioning portion, and the limiting protruding portion abuts against the conductive connection piece.

[0016] Further, the wiring box for the track light further includes a transformer. The transformer is arranged in the insulating housing, and the conductive connection piece is connected to the power cord of the external power supply through the transformer.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] During installation, the clamping portion of the insulating housing is embedded into the track groove near the end of the track. While the left and right side walls of the clamping portion are respectively abutted against the two side walls of the track groove, the first card slot is tightly matched with the card plate, and the contact is abutted against the conductive strip located on the bottom wall of the track groove. Then, the power cord of the external power supply is connected to the conductive connection piece, and the conductive circuit on the track can be conducted. The limiting cooperation between the clamping portion and the track groove plays a role in limiting the contact, provides insulation protection for the conductive connection piece, and ensures that the contact can be reliably contacted with the conductive strip, thereby realizing a reliable connection between the external power supply and the conductive circuit on the track; in addition, the plug-in cooperation between the clamping portion and the track groove makes the installation and disassembly of the wiring box for the track light more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic structural view of the junction box for track lights of the present invention installed on a track;

[0020] Figure 2 is Figure 1 a schematic structural view of the junction box for track lights shown in FIG. from a first perspective;

[0021] Figure 3 is Figure 2 a schematic structural view of the junction box for track lights shown in FIG. from a second perspective;

[0022] Figure 4 is Figure 2 a schematic internal structural view of the junction box for track lights shown in FIG.;

[0023] Figure 5 is Figure 2 an exploded view of the junction box for track lights shown in FIG.;

[0024] Figure 6 is Figure 5 a schematic structural view of the upper housing in the junction box for track lights shown in FIG.;

[0025] Figure 7 is Figure 5 a schematic structural view of the positioning block in the junction box for track lights shown in FIG.

[0026] In the figures: 1, insulating housing; 11, clamping portion; 111, first card slot; 12, plugging head portion; 13, lower housing; 131, wire passing hole; 132, positioning blind slot; 133, tenon; 1331, first limiting plate; 14, upper housing; 141, second card slot; 142, vertical plate; 143, second limiting plate; 15, positioning block; 151, positioning portion; 152, limiting protrusion; 1521, groove; 2, conductive connecting piece; 21, contact; 22, wire passing hole; 3, track; 31, conductive strip; 32, clamping plate. DETAILED DESCRIPTION OF THE INVENTION

[0027] Next, with reference to the drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] See Figure 1 , which is a schematic structural diagram of a junction box for a track light installed at the end of a track 3 according to a preferred embodiment of the present invention. The junction box for the track light is used to connect the conductive strip 31 on the track 3 and the power cord of an external power supply to energize the conductive strip 31 on the track 3. Among them, in order to convert the commercial power into a voltage suitable for the track light, a transformer can be externally connected between the junction box for the track light and the power cord of the external power supply, or the transformer built into the insulating housing 1 can be connected to the junction box for the track light and the power cord of the external power supply. Continuing to see Figure 1 , the track 3 has a track groove, the conductive strip 31 is arranged on the bottom wall of the track groove, and clamping plates 32 are arranged on both side walls of the track groove. As Figures 2 - 5 shown, the junction box for the track light includes an insulating housing 1 and at least two conductive connection pieces 2. One is used to connect the live conductive strip, and the other is used to connect the neutral conductive strip. Among them, the insulating housing 1 is injection-molded using a plastic material, and the material of the conductive connection piece 2 is preferably a metal conductive material, such as copper material with excellent conductivity and low price. As Figure 1As shown in the figure, the insulating housing 1 at least includes a clamping portion 11 for cooperating with the track groove. First card slots 111 are formed on both the left and right sides of the clamping portion 11. The first card slots 111 are used to cooperate with the card plates 32 to reliably embed the clamping portion 11 into the track groove. A wire passing hole 131 communicating with the inside of the insulating housing 1 is formed on the insulating housing 1 for the power cord of the external power supply to extend into the insulating housing 1 through the wire passing hole 131. The wire passing hole 131 can be formed on the bottom surface or side surface of the insulating housing 1, so that users can choose to connect wires from different directions according to their needs, making it more convenient to use. The conductive connecting piece 2 is installed inside the insulating housing 1, and one end of the conductive connecting piece 2 is exposed at the bottom of the clamping portion 11 and forms a contact 21 for abutting against the conductive bar 31. The other end of the conductive connecting piece 2 is connected to the power cord of the external power supply through a transformer.

[0031] During installation, the clamping portion 11 of the insulating housing 1 is embedded into the track groove near the end of the track 3. While the left and right side walls of the clamping portion 11 are respectively abutted against the two side walls of the track groove, the first card slots 111 are tightly clamped and cooperated with the card plates 32 to reliably install the insulating housing 1 on the track. At the same time, the contact is abutted against the conductive bar 31 located on the bottom wall of the track groove. Then, the power cord of the external power supply is connected to the conductive connecting piece 2, and the conductive circuit on the track 3 can be conducted. The limiting cooperation between the clamping portion 11 and the track groove plays a limiting role on the contact, provides insulation protection for the conductive connecting piece 2, and ensures that the contact can reliably contact the conductive bar 31, thereby realizing a reliable connection between the external power supply and the conductive circuit on the track 3. In addition, the plug-in cooperation between the clamping portion 11 and the track groove makes the installation and disassembly of the wiring box for the track lamp relatively convenient.

[0032] As Figure 3 shown, as a preferred embodiment, the contact 21 arches outwards, and the bottom surface of the contact 21 is used to abut against the conductive bar 31. By setting the contact as the arched contact 21, it is convenient for the contact to penetrate out of the insulating housing 1, and at the same time, the anti-deformation performance of the contact can be improved, so that when the contact abuts against the conductive bar 31, it is not easy to deflect away from the conductive bar 31 or be squeezed and deformed, thereby ensuring reliable contact between the contact and the conductive bar 31 and further improving the stability.

[0033] As a preferred embodiment, the width dimension of the contact 21 is larger than the outer diameter of the conductive bar 31 to ensure reliable contact between the contact 21 and the conductive bar 31 and further improve the stability.

[0034] Continue to refer to Figure 3 , the contacts 21 on adjacent two conductive connecting pieces 2 are arranged in a staggered manner to separate the adjacent conductive connecting pieces 2 from each other so that the adjacent conductive connecting pieces 2 do not interfere with each other.

[0035] As Figure 4As shown, as a preferred embodiment, there is a gap between the other end of the conductive connection piece 2 and the bottom wall of the insulating housing 1, and a wire passing hole 22 is formed in the other end of the conductive connection piece 2. Such a setting leaves enough wire passing space between the other end of the conductive connection piece 2 and the bottom wall of the insulating housing 1, facilitating the access of an external power cord. The setting of the wire passing hole 22 can facilitate the fixation of the external power cord, enabling a reliable connection between the external power cord and the conductive connection piece 2.

[0036] As Figure 5 shown, a positioning blind groove 132 is provided in the insulating housing 1, a notch is formed at the bottom of the clamping portion 11, the conductive connection piece 2 is installed in the positioning blind groove 132, and the contact 21 extends out of the clamping portion 11 along the notch. By providing the positioning blind groove 132 adapted to the conductive connection piece 2 in the insulating housing 1, the conductive connection piece 2 can be limited, preventing it from moving left and right, enabling the conductive connection piece 2 to be firmly installed in the insulating housing 1, and then ensuring a reliable contact between the contact 21 and the conductive bar 31.

[0037] As a preferred embodiment, the contact 21 is also clamped in the positioning blind groove 132, and the bottom of the contact 21 extends out of the clamping portion 11 along the notch. By clamping the contact 21 in the positioning blind groove 132, the contact 21 can be limited, preventing it from moving, and enabling a more reliable connection between the contact 21 and the conductive bar 31 located on the track groove.

[0038] As Figure 1 or Figure 2 shown, the insulating housing 1 further includes a plug head portion 12 connected to the clamping portion 11. The surface of the plug head portion 12 connected to the clamping portion 11 is used to abut against the end of the track 3, and the width dimension of the plug head portion 12 is the same as the width dimension of the track 3, and the height dimension of the plug head portion 12 is the same as the height dimension of the track 3. By providing a plug head adapted to the track 3, while enabling the track light wiring box to be integrated with the track 3 to form an integral structure, the setting of the plug head can facilitate the user to hold the track light wiring box, making the installation and disassembly of the track light wiring box more convenient.

[0039] As a preferred embodiment, the insulating housing 1 includes an upper housing 14 and a lower housing 13. As Figure 4 shown, clamping tenons 133 are provided on both the left and right inner sides of the lower housing 13. As Figure 6 shown, a second card slot 141 that is tightly clamped with the clamping tenons 133 is provided on the upper housing 14, and the second card slot 141 is formed by enclosing two vertical plates 142 on the inner side wall of the upper housing 14. Through the cooperation of the clamping tenons 133 and the second card slot 141, the disassembly and assembly between the upper housing 14 and the lower housing 13 can be made more convenient, facilitating the access of the external power cord.

[0040] As a preferred embodiment, a first limiting plate 1331 is provided at the end of the tenon 133, and a second limiting plate 143 is formed on the inner side wall of the upper housing 14. The second limiting plate 143 is located between the two vertical plates 142. When the tenon 133 is engaged with the second card slot 141, the first limiting plate 1331 abuts against the second limiting plate 143, so that the connection between the upper housing 14 and the lower housing 13 is more reliable.

[0041] As Figure 4 or Figure 5 or Figure 7 As shown, as a preferred embodiment, the insulating housing 1 further includes a positioning block 15. The conductive connecting piece 2 is disposed in the lower housing 13. Slots are provided on the opposite inner side walls of the lower housing 13. The positioning block 15 includes a positioning portion 151 and a limiting protrusion 152. The opposite sides of the positioning portion 151 are respectively clamped and engaged with the slots located on the opposite inner sides of the lower housing 13 to reliably mount the positioning block 15 in the lower housing 13. The limiting protrusion 152 is located at the bottom of the positioning portion 151, and the limiting protrusion 152 abuts against the conductive connecting piece 2. In this way, the conductive connecting piece 2 is limited, preventing the conductive connecting piece 2 from moving upward, and further improving the connection stability between the conductive connecting piece 2 and the conductive bar 31.

[0042] As a preferred embodiment, a plurality of ridges are provided on the top of the lower housing 13. The adjacent ridges are spaced apart and enclose a positioning blind slot 132 with the top wall of the lower housing 13. A groove 1521 is formed at the bottom of the limiting protrusion 152, and the groove 1521 is clamped and engaged with the ridge, so that the positioning block 15 can be more reliably mounted on the lower housing 13.

[0043] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. Junction box for track lights, used to connect the conductive bar on the track and the power cord of an external power supply to energize the conductive bar on the track. The track has a track groove, the conductive bar is arranged on the bottom wall of the track groove, and clamping plates are arranged on both side walls of the track groove. It is characterized in that, The track light junction box comprises an insulating shell and at least two conductive connecting pieces, the insulating shell at least comprises a clamping portion for cooperating with the track groove, the left and right sides of the clamping portion are provided with a first clamping slot, the first clamping slot is used to cooperate with the clamping plate, the insulating shell is provided with a wire hole connected with the interior thereof, the conductive connecting piece is installed in the insulating shell, and one end of the conductive connecting piece is exposed at the bottom of the clamping portion to form a contact for abutting against the conductive strip; A blind positioning groove is provided in the insulating housing, a notch is provided at the bottom of the clamping portion, the conductive connecting piece is installed in the blind positioning groove, and the contact extends out of the clamping portion along the notch; The insulating housing comprises an upper housing and a lower housing, one of the upper housing and the lower housing is provided with a tenon, and the other is provided with a second slot tightly matched with the tenon; The insulating shell also includes a positioning block, the conductive connecting piece is arranged in the lower shell, and the two opposite inner side walls of the lower shell are provided with slots. The positioning block includes a positioning part and a limiting protrusion. The opposite sides of the positioning part are respectively tightly fitted with the slots located on the two opposite inner sides of the lower shell. The limiting protrusion is located at the bottom of the positioning part, and the limiting protrusion abuts against the conductive connecting piece.

2. The junction box for track lights according to claim 1, characterized in that, The contact is an outwardly arched contact, and the bottom surface of the contact is used for abutting against the conductive strip.

3. The junction box for track lights according to claim 1, characterized in that, The contacts on two adjacent conductive connecting sheets are arranged in a staggered manner.

4. The terminal box for track lights according to claim 1, characterized in that, The other end of the conductive connecting piece is spaced apart from the bottom wall of the insulating shell, and a threading hole is formed on the other end of the conductive connecting piece.

5. The junction box for track lights according to claim 1, characterized in that, The contact is also clamped in the positioning blind groove, and the bottom of the contact extends out of the clamping portion along the notch.

6. The junction box for track lights according to claim 1, characterized in that, The insulating shell also includes a plugging portion connected to the clamping portion, a side of the plugging portion connected to the clamping portion is used to abut against the end of the track, and the width dimension of the plugging portion is the same as the width dimension of the track, and the height dimension of the plugging portion is the same as the height dimension of the track.

7. The junction box for track lights according to claim 1, characterized in that, The track light junction box further comprises a transformer, which is built into the insulating housing, and the conductive connecting piece is connected to a power line of an external power source via the transformer.

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