TWM448058U - Junction box - Google Patents

Description

Junction Box

The present invention relates to a junction box for connecting cables, and more particularly to a junction box for connecting cables of solar photovoltaic components.

In an electronic system such as a solar photovoltaic module and a communication component for transmitting micro-electric signals, it is necessary to transmit the micro-electric signals to an electronic device disposed in the junction box by an external cable for processing such as aggregation, forwarding, and the like. A connection terminal for electrically connecting to the external cable and a connection piece connected between the connection terminal and the electronic device are provided in the junction box.

FIG. 1 shows a partial cross-sectional view of an embodiment of a conventional junction box 200. The junction box 200 includes a housing 201 on which a through hole for introducing the external cable 202 is provided, and a connection terminal 203 to be electrically connected to the external cable 202 to be introduced, for example, by soldering; a fixing member 205 fixed to the housing 201; and a connecting piece 204 connected between the connecting terminal 203 and an electronic device (not shown). The connecting piece 204 is made of a thin metal material such as a copper foil, and is electrically connected to the connecting terminal 203 by soldering. Since the connecting piece 204 is thin, there may be a problem of soldering during the soldering process of the connecting piece 204 and the connecting terminal 203, which may result in poor contact between the two, and the time is interrupted. Moreover, the contact impedance between the two is very high, and even an arc is generated, which has a great safety hazard.

The present invention provides a junction box for electrically connecting a cable for transmitting a weak electrical signal, which can maintain the stability between the connection terminal and the connecting piece by the fixing device Fixed mechanical fixation to improve the stability of weak signal transmission and signal transmission quality.

According to one aspect of the creation, a junction box is provided.

According to the junction box of the above embodiment of the present invention, the fixed mechanical connection between the connection terminal and the connecting piece is maintained by the fixing device, and the soldered electrical connection between the connection terminal and the connecting piece and between the connecting terminal and the external cable can be maintained. Improve the stability of weak signal transmission and signal transmission quality.

The present creation will be explained in further detail with reference to the accompanying drawings.

Although the present invention will be fully described with reference to the accompanying drawings in which the preferred embodiments of the present invention are described, it is understood that those skilled in the art can modify the teachings set forth herein and obtain the technical effects of the present invention. Therefore, it is to be understood that the above description is a broad disclosure of the invention, and is not intended to limit the illustrative embodiments set forth herein.

2 to FIG. 3, FIG. 2 is a perspective view showing the junction box 100 of the present invention, and FIG. 3 is a partial perspective view of the junction box 100 of FIG. 2 taken along line A-A. The junction box 100 according to the present invention is for electrically connecting an external cable 10 in an electronic system such as a solar photovoltaic module, a communication component, or a microelectronic signal to an electronic device (not shown) in the junction box 100. The electronic device processes or further transmits the weak electrical signal transmitted from the external cable. The junction box 100 according to an exemplary embodiment of the present invention includes at least one wiring assembly, each wiring assembly for electrically connecting to an external cable (10) and including: an electronic device; a connection terminal 2, which is The external cable 10 to be introduced into the junction box 100 is electrically connected Connected; a connecting piece 3 connected between the electronic device and the connecting terminal 2; and a fixing device 4 pressing the connecting piece 3 against the connecting terminal 2 to maintain the connection between the connecting piece 3 and the connecting terminal 2 Stable electrical connection.

In a further embodiment, the connection terminal 2 is made of a metal sheet such as copper or copper alloy and includes a body portion 21 and a connection end 22 at one end of the body portion 21, the connection sheet 3 being stacked on the connection end 22 And a part of the main body portion 21 and welded to the connection terminal 2 on the main body portion 21, thereby electrically connecting the connecting piece 3 and the connection terminal 2. The other end of the main body portion 21 is fixed to the bottom of the casing 1 of the junction box 100 by a fixing member 5 such as a bolt and a fixing post.

According to an exemplary embodiment of the present invention, referring to FIG. 4, the fixing device 4 is formed by extending longitudinally from the connecting end 22 of the connecting terminal 2 and bent in the extending direction, that is, the fixing device 4 and the connecting terminal 2 are integrated. Formed, and an opening 41 is formed at a portion where the connection terminal 2 is bent (see FIGS. 9 and 10), and the connecting piece 3 is stacked over the opening 41 over the connection end 22 and a portion of the main body portion 21. In the embodiment of Fig. 9, the opening 41 is formed in a substantially intermediate portion of the fixture 4, and in another embodiment shown in Fig. 10, the opening 41' extends laterally to one side of the fixture 4. In order to increase the stability of the structure, referring to FIG. 4 and FIG. 8, the connecting end 22 of the connecting terminal 2 is substantially perpendicular to the main body portion 21, and is overlapped on the two opposite surfaces of the connecting end 22 by bending the connecting piece 3. .

Referring to FIG. 9 and FIG. 10, when the connection terminal 2 and the fixing device 4 of the present invention are fabricated, a metal piece having a predetermined substantially rectangular shape is first formed, and the opening 41 or 41' is formed on the metal piece, for example, by cutting. The bent portion 23 bends the metal piece by about 90 degrees to form the main body portion 21 and the connecting portion 22, and then The second curved portion 42 corresponding to the opening 41 or 41' bends the connecting portion 22 by about 180 degrees, thereby forming the presently constructed fixing device 4 as shown in FIG. Preferably, the end 43 of the fixing device and the connecting portion are reserved with a predetermined gap so that the connecting piece 3 is superposed on the connecting portion 22 and the main body portion 21 by the opening 41 or 41'. Further, after the connecting piece 3 stacked on the main body portion 21 is joined to the main body portion 21 by welding, the end portion 43 is pressed against the connecting piece 3 by a holding tool such as a pliers, thereby achieving a connecting piece. 3 welded electrical connection between the connection terminal 2 and further mechanical fixing. By fixing the stable mechanical fixing between the connection terminal 2 and the connecting piece 3 by the fixing device 4, the welded electrical connection between the connecting terminal 2 and the connecting piece 3 and between the connecting terminal 2 and the external cable 10 can be maintained, which reduces the The probability of virtual soldering improves the stability of weak signal transmission and signal transmission quality.

Referring to Fig. 11, in another embodiment, the fixture 4' is formed to extend laterally from both sides of the connecting end 22 and to be bent in the direction of extension. Referring to Fig. 12, in a further embodiment, the fixture 4" is formed to extend laterally from one side of the attachment end 22 and to be bent in the direction of extension.

The embodiment in which the fixing means is integrally formed on the connecting terminal 2 by extending the connecting portion 21 in the longitudinal or lateral direction and bending is explained above. But this creation is not limited to this. Referring to Figures 3 and 4, the fixture is a separate clip 45. Further, the connecting piece 3 is superposed on both surfaces of the connecting end 22 by bending, and the clip 45 is inserted into the end of the connecting end 22 in the longitudinal direction and clamped to a portion of the connecting piece 3 stacked on the connecting end 22. on. In an alternative embodiment, at least one of the individual clips 45 is inserted into at least one side of the connecting end 22 in the lateral direction and clamped to the tab that is stacked on the connecting end 22. 3 on one part. In this way, the connecting piece 3 can also be stably held on the connecting portion 22 of the connecting terminal 2 as well.

In a further exemplary embodiment, referring to Figs. 6 and 7, on the basis of the fixing device 4 as shown in Fig. 4, a clip 45 for holding the fixing device 4 is further provided on the fixing device 4. . Thus, the connecting piece 3 is more stably fixed to the connecting terminal 2 by means of double fixing.

In a further embodiment of the present invention, the upper surface of the connecting terminal 2 for stacking the connecting sheets 3 is provided with a recess 23 for the outer cable 10, so that the connecting terminal 2 and the external cable 10 can be maintained. A more reliable electrical connection between the two. The groove 23 has a size of about 1 mm long and about 0.2 mm wide.

The embodiment in which the main body portion 21 of the connection terminal 2 is substantially perpendicular to the connecting piece 22 has been described above, but the present creation is not limited thereto. Those skilled in the art will appreciate that the tabs 22 may also be substantially in the same plane as the body portion 21, or may have other angles therebetween, depending on actual needs. Although the junction box of the present invention includes two wiring assemblies connecting the two external cables 10, it can be understood that the junction box of the present invention may include only one wiring assembly, and is also configured to include three or More than three wiring components.

It will be understood by those skilled in the art that the embodiments set forth above are illustrative and can be modified by those skilled in the art, and the structures illustrated in the embodiments are not structural or principle. In the case of conflicts, free combination can be made to achieve more kinds of junction boxes on the basis of solving the technical problems of the creation.

Having described the preferred embodiments of the present invention in detail, it will be apparent to those skilled in the art that Various changes and modifications can be made without departing from the spirit and the present invention is not limited to the embodiments of the exemplary embodiments set forth in the specification. It should be noted that the term "comprising" does not exclude other elements or steps, and the term "a" or "an" does not exclude a plurality. In addition, any component numbering of the scope of the patent application should not be construed as limiting the scope of the present invention.

1‧‧‧shell

2‧‧‧Connecting terminal

3‧‧‧Connecting piece

4‧‧‧Fixed devices

4'‧‧‧Fixed devices

4"‧‧‧Fixed devices

5‧‧‧Fixed parts

10‧‧‧External cable/external cable

21‧‧‧ Main body

22‧‧‧Connecting/Connecting

23‧‧‧First bend/groove

41‧‧‧ openings

41'‧‧‧ Opening

42‧‧‧second bend

End of 43‧‧‧

45‧‧‧ clip

100‧‧‧ junction box

200‧‧‧ junction box

201‧‧‧ housing

202‧‧‧External cable

203‧‧‧Connecting terminal

204‧‧‧Connecting piece

205‧‧‧Fixed parts

1 is a partial cross-sectional view of an embodiment of a conventional junction box; FIG. 2 is a perspective view of a junction box of an embodiment of the present invention; FIG. 3 is a partial perspective view of the junction box of FIG. Figure 4 is an enlarged schematic view of a portion B of Figure 3; Figure 5 is an enlarged schematic view of a portion C of Figure 3; Figure 6 is a partial cross-sectional perspective view of a junction box of another embodiment of the present invention; Figure 6 is a partial cross-sectional view of the junction box of Figure 2; Figures 9 to 12 are four embodiments of forming a fixture on the connection terminal.

1‧‧‧shell

2‧‧‧Connecting terminal

3‧‧‧Connecting piece

4‧‧‧Fixed devices

5‧‧‧Fixed parts

10‧‧‧External cable/external cable

45‧‧‧ clip

Claims (11)

A junction box comprising at least one wiring assembly, each wiring assembly for electrically connecting to an external cable and comprising: an electronic device; a connection terminal electrically connected to the external cable to be introduced into the junction box a connecting piece connected between the electronic device and the connecting terminal; the junction box is characterized in that the wiring assembly further comprises: a fixing device, the fixing device pressing the connecting piece on each of the connecting terminals Upper to maintain an electrical connection between the connecting piece and the connecting terminal. The junction box of claim 1, wherein the connection terminal is made of a metal sheet and includes a main body portion and a connection end at one end of the main body portion, the connection piece being stacked on the connection end and a portion of the main body portion And soldering to the connecting terminal on the main body portion. The junction box of claim 2, wherein the fixing device is formed by extending longitudinally from the connecting end of the connecting terminal and bent in the extending direction, and forming an opening at a portion of the connecting terminal that is bent, A tab passes through the opening. A junction box according to claim 3, wherein the opening extends laterally to a side of one of the fixtures. The junction box of claim 2, wherein the fixture is provided with a clip for holding the fixture. The junction box of claim 2, wherein the fixing device is from the connection end At least one side portion extends laterally and is formed by bending in the direction of extension. The junction box of claim 2, wherein the fixture is a separate clip. The junction box of claim 7, wherein the connecting piece is overlapped on both surfaces of the connecting end by bending, and the clip is inserted into the end of the connecting end in the longitudinal direction and clamped on the connecting end. Connect one of the pieces to the piece. A junction box according to claim 7, wherein at least one of the clips is inserted in at least one side of the connecting end in a lateral direction and is clamped to a portion of the connecting piece stacked on the connecting end. The junction box of any one of claims 2 to 9, wherein the connection end is substantially perpendicular to the body portion. The junction box of any one of claims 2 to 9, wherein the upper surface of the connection terminal is provided with a recess recessed toward the outer cable.