Rapidly-installed solar photovoltaic junction box

Abstract

The utility model provides a solar photovoltaic junction box capable of being rapidly installed, which relates to the technical field of junction boxes and comprises a junction box body. The left side and the right side of the junction box body are provided with conductive contact pieces in the front-back direction, the middle of each conductive contact piece is provided with a vertically-through fixing hole, the front side of the top end face of each conductive contact piece is provided with a vertically-through threaded column, and the inner side of the outer circumference of the threaded column of each conductive contact piece is provided with a vertically-through strip-shaped groove. The front end of the top end face of each conductive contact piece is provided with a wiring block with a front-back through hole, the detachable diode is conveniently limited between the conductive contact pieces, the detachable diode is pressed and fixed through descending of the pin locking cylinder, and therefore the detachable diode can be conveniently and rapidly disassembled and assembled, and the problem that the diode is installed between the contact pieces through soldering tin welding and cannot be conveniently disassembled and assembled is solved. Therefore, time is wasted in the dismounting and replacing process, and installation measures are not convenient to add on the contact sheet, so that the diode can be rapidly installed and dismounted.

Description

Technical Field

[0001] This utility model belongs to the field of junction box technology, and in particular relates to a quick-installation solar photovoltaic junction box. Background Technology

[0002] A solar photovoltaic junction box is an electrical device and one of the core components of a photovoltaic module. It is mainly used to connect the output of the solar panel to the input circuit of the inverter, thereby helping the solar system to operate more smoothly. Its main functions include connecting and protecting the solar photovoltaic module, connecting the power generated by the solar cell to the external line, and conducting the current generated by the photovoltaic module.

[0003] Based on the above, the inventors have discovered the following shortcomings in existing solar photovoltaic junction boxes:

[0004] 1. The diode is mounted between the contacts by soldering, which makes the disassembly and replacement process time-consuming. It is inconvenient to add mounting measures to the contacts to enable the diode to be installed and removed quickly.

[0005] 2. The contact plate and the cable are connected by a crimp, which means that the contact plate and the cable cannot be disassembled to replace parts. It is inconvenient to add connection measures to the contact plate so that the contact plate and the cable can be replaced. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a quick-installation solar photovoltaic junction box. This solves the issues of existing diodes being soldered between contact plates, resulting in time-consuming disassembly and replacement processes, and the inconvenience of adding installation measures to the contact plates to enable quick diode installation and removal; and the contact plates and cables being crimped, preventing further disassembly for replacement parts, and the inconvenience of adding connection measures to the contact plates to facilitate cable replacement.

[0007] The purpose and effect of this utility model's quick-installation solar photovoltaic junction box are achieved through the following specific technical means:

[0008] A quick-installation solar photovoltaic junction box includes a junction box body; conductive contact pieces are provided on both the left and right sides of the junction box body in a front-to-back direction, a through-hole is provided in the middle of the conductive contact piece, a threaded post in a top-to-bottom direction is provided in front of the top end of the conductive contact piece, a strip groove in a top-to-bottom direction is provided on the inner side of the outer circumference of the threaded post of the conductive contact piece, a connector block with a front-to-back through hole is provided at the front end of the top end of the conductive contact piece, a threaded hole in a top-to-bottom direction is provided on the top of the connector block of the conductive contact piece, a detachable diode in a left-to-right direction is placed in the strip groove between the conductive contact pieces, a pin locking cylinder in a top-to-bottom direction is installed on the outer circumference of the threaded post of the conductive contact piece by threads, the inner circumference of the pin locking cylinder is threaded, a limit ring plate is provided on the outer circumference of the bottom of the pin locking cylinder, and a regular hexagonal structure is provided on the outer circumference of the upper part of the pin locking cylinder.

[0009] Furthermore, the outer circumference of the photovoltaic junction box is threaded with a cable locking cylinder in the front-to-back direction. The inner circumference of the rear end of the cable locking cylinder is threaded, the inner circumference of the middle of the cable locking cylinder is provided with a frustum hole, the inner circumference of the front end of the cable locking cylinder is provided with a cable hole, and the outer circumference of the front end of the cable locking cylinder is provided with a regular hexagonal structure.

[0010] Furthermore, the outer circumference of the rear of the wire tube of the photovoltaic junction box is threaded, the outer circumference of the front of the wire tube of the photovoltaic junction box is provided with a conical surface, the inner circumference of the middle of the wire tube of the photovoltaic junction box is provided with a deformation annular groove, and the front end face of the wire tube of the photovoltaic junction box is provided with six deformation grooves that penetrate through the inside and outside in a ring array.

[0011] Furthermore, a photovoltaic junction box in the left-right direction is installed below the fixed locking pins via threads. The bottom left and right sides of the photovoltaic junction box are provided with front-back limiting grooves. A threaded blind hole is provided in the middle of the limiting grooves of the photovoltaic junction box. The front and left sides of the photovoltaic junction box are provided with through-holes for wires.

[0012] Furthermore, a vertically oriented fixing locking post is inserted into the fixing hole of the conductive contact piece, a threaded post is provided at the lower part of the fixing locking post, an anti-disengagement ring plate is provided on the outer circumference of the top of the threaded post of the fixing locking post, and a regular hexagonal groove is opened on the top end face of the threaded post of the fixing locking post.

[0013] Furthermore, a junction box cable in the front-to-back direction is inserted in front of the terminal block of the conductive contact piece, and the core wire is exposed at the rear end of the junction box cable.

[0014] Furthermore, a core wire locking post is installed inside the threaded hole of the conductive contact piece in the vertical direction. The core wire locking post has a thread on its outer circumference and a regular hexagonal groove on its top end face.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The removable diode is conveniently positioned between conductive contacts and is clamped and fixed by the descent of the pin locking cylinder. This facilitates quick installation and removal of the removable diode, solving the problem that diodes are soldered between contacts, which makes the installation and removal process time-consuming and inconvenient to install mounting measures on the contacts to enable quick installation and removal of the diode.

[0017] This design facilitates the insertion of junction box cables into the conductive contact plate, and the cables are pressed and secured by the descending core wire locking post. This makes it easy to replace the junction box cables, solving the problem that the contact plate and cable are crimped, making it impossible to disassemble and replace parts, and making it inconvenient to add connection measures to the contact plate to allow for replacement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the rear view structure of this utility model.

[0020] Figure 3 This is a bottom view of the structure of this utility model.

[0021] Figure 4 This is a disassembled structural diagram of the present invention.

[0022] Figure 5 This is a cross-sectional structural diagram of the present invention.

[0023] Figure 6 This is an assembly diagram of the conductive contact piece and the detachable diode of this utility model.

[0024] In the diagram: 1. Junction box body; 2. Conductive contact piece; 3. Removable diode; 4. Pin locking cylinder; 5. Core wire locking post; 6. Junction box cable; 7. Fixing locking post; 8. Photovoltaic junction box; 9. Cable locking cylinder. Detailed Implementation

[0025] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0026] Example 1:

[0027] As attached Figure 1 To be continued Figure 6 As shown:

[0028] This utility model provides a quick-installation solar photovoltaic junction box, including a junction box body 1. Conductive contact pieces 2 are provided on both the left and right sides of the junction box body 1 in a front-to-back direction for easy current conduction. A through-hole is provided in the middle of each conductive contact piece 2 for easy fixing via a locking post 7. A threaded post is provided on the front of the top end of each conductive contact piece 2 in a vertical direction for easy installation of a pin locking cylinder 4 via threads. A groove is provided on the inner side of the outer circumference of the threaded post of the conductive contact piece 2 in a vertical direction for easy placement of a removable diode 3. A connector block with a through-hole is provided on the front of the top end of each conductive contact piece 2 for easy insertion of the junction box cable 6. A threaded hole is provided on the top of the connector block of the conductive contact piece 2 in a vertical direction for easy installation of the core wire locking post 5 via threads. A removable diode 3 in a left-to-right direction is placed inside the groove between the conductive contact pieces 2 for circuit protection. The diode is model 10A10. The outer circumference of the threaded post of the electrical contact piece 2 is fitted with a vertically oriented pin locking cylinder 4 for easy clamping and fixing of the removable diode 3. The inner circumference of the pin locking cylinder 4 is threaded for easy threaded installation. A limit ring plate is provided on the outer circumference of the bottom of the pin locking cylinder 4 for easy clamping and limiting of the removable diode 3. The upper outer circumference of the pin locking cylinder 4 is provided with a regular hexagonal structure for easy rotation and disassembly using tools. The threaded hole of the conductive contact piece 2 is fitted with a vertically oriented core wire locking post 5 for easy locking and fixing of the junction box cable 6. The outer circumference of the core wire locking post 5 is threaded for easy threaded installation. The top end face of the core wire locking post 5 is provided with a regular hexagonal groove for easy rotation and disassembly using tools. The junction box cable 6 is inserted in the front of the terminal block of the conductive contact piece 2 for easy connection to the solar photovoltaic circuit. The rear end of the junction box cable 6 has a core wire exposed for easy insertion into the conductive contact piece 2 to conduct current.

[0029] The conductive contact piece 2 has a vertically oriented locking post 7 inserted into its fixing hole for easy fixation. The locking post 7 has a threaded post at its lower part for easy installation onto the photovoltaic junction box 8 via threads. An anti-detachment ring is provided on the outer circumference of the top of the threaded post 7 to prevent the conductive contact piece 2 from detaching. A regular hexagonal groove is provided on the top end face of the threaded post 7 for easy rotation and disassembly using tools. The photovoltaic junction box 8 is installed horizontally below the locking posts 7 via threads for supporting various components. The bottom left and right sides of the photovoltaic junction box 8 have front-to-back limiting grooves to facilitate the placement and limiting of the conductive contact piece 2. A threaded blind hole is provided in the center of the limiting grooves of the photovoltaic junction box 8 for easy installation of the locking posts 7 via threads. The front face of the photovoltaic junction box 8 has through-hole cable reels on both left and right sides for easy passage of the junction box cable 6. The outer circumference of the rear of the cable reel of the photovoltaic junction box 8 has threads to facilitate cable... The locking cylinder 9 is installed via threads. The outer circumference of the front of the cable guide tube of the photovoltaic junction box 8 is provided with a conical surface, which facilitates fitting with the frustum hole of the cable locking cylinder 9 to achieve convergence. The inner circumference of the middle of the cable guide tube of the photovoltaic junction box 8 is provided with a deformation annular groove, which facilitates the deformation of the photovoltaic junction box 8 to clamp the junction box cable 6. The front end face of the cable guide tube of the photovoltaic junction box 8 is provided with six internal and external through deformation grooves in an annular array, which facilitates the deformation of the front end of the photovoltaic junction box 8 through the cable locking cylinder 9. The outer circumference of the cable guide tube of the photovoltaic junction box 8 is threaded with a front-to-back direction cable locking cylinder 9, which facilitates the deformation of the front end of the photovoltaic junction box 8 to clamp the junction box cable 6. The inner circumference of the rear end of the cable locking cylinder 9 is provided with threads, which facilitates threaded installation. The inner circumference of the middle of the cable locking cylinder 9 is provided with a frustum hole, which facilitates contact with the conical surface of the photovoltaic junction box 8. The inner circumference of the front end of the cable locking cylinder 9 is provided with a cable hole, which facilitates the passage of the junction box cable 6. The outer circumference of the front end of the cable locking cylinder 9 is provided with a regular hexagonal structure, which facilitates rotation and disassembly using tools.

[0030] The specific usage and function of this embodiment are as follows:

[0031] In this invention, when the conductive contact piece 2 is installed, it is placed into the limiting groove inside the photovoltaic junction box 8 to ensure its stability and prevent wobbling. The conductive contact piece 2 is then fixed to the photovoltaic junction box 8 by the threaded post of the fixing locking post 7. The fixing locking post 7 is rotated until its bottom anti-detachment ring plate is tightly against the conductive contact piece 2, ensuring that the conductive contact piece 2 will not fall off. This achieves a stable installation of the conductive contact piece 2. When the removable diode 3 is installed, it is placed into the strip groove of the conductive contact piece 2 to ensure its stability. The positive and negative terminals of diode 3 correspond to those of conductive contact piece 2. The pin locking cylinder 4 is threaded onto the threaded post of conductive contact piece 2, and the pin locking cylinder 4 is rotated to lower it until the limiting ring plate at its bottom presses against the removable diode 3, thus achieving the clamping and fixing of the removable diode 3. When installing the junction box cable 6, the junction box cable 6 is passed through the cable guide tube of the photovoltaic junction box 8, and the core wire of the junction box cable 6 is inserted into the terminal block of conductive contact piece 2, ensuring that the core wire is in close contact with conductive contact piece 2. The core wire locking post 5 is threaded onto the conductive contact piece. In the threaded hole of 2, rotate the core wire locking pin 5 to lower it until its bottom presses against the core wire of the junction box cable 6, thereby achieving the clamping and fixing of the junction box cable 6. Then, the cable locking cylinder 9 is threaded onto the wire guide tube of the photovoltaic junction box 8, and the cable locking cylinder 9 is rotated to move it backward, so that the frustum hole of the cable locking cylinder 9 contacts the conical surface of the photovoltaic junction box 8 and deforms, so that the front end of the wire guide tube of the photovoltaic junction box 8 generates a clamping force on the junction box cable 6, thereby ensuring that the junction box cable 6 will not loosen and come out. The locking cylinder is secured by the pin. The design of pin locking cylinder 4 and core wire locking post 5 enables quick assembly and disassembly of detachable diode 3 and junction box cable 6 without welding or crimping, improving assembly and disassembly efficiency. At the same time, the pressing and fixing effect of pin locking cylinder 4 and core wire locking post 5, as well as the clamping effect of cable locking cylinder 9, together ensure the stability of electrical connection and prevent circuit failure caused by loosening and poor contact. Since detachable diode 3 and junction box cable 6 can be quickly assembled and disassembled, it is very convenient when maintenance or replacement is required, without disassembling the entire junction box or damaging the original electrical connection.

[0032] Example 2:

[0033] The difference from Embodiment 1 is that the regular hexagonal structure of the pin locking cylinder 4 can also be set as a regular heptagonal structure, which makes the pin locking cylinder 4 require a special tool that works with the regular heptagonal structure to rotate, thus preventing non-staff members from rotating and disassembling the pin locking cylinder 4.

[0034] Example 3:

[0035] The difference from Embodiment 1 is that the regular hexagonal groove of the core wire locking post 5 can also be set as a regular heptagonal groove, so that the core wire locking post 5 can only be rotated by a special tool that cooperates with the regular heptagonal groove, thus preventing non-workers from rotating and disassembling the core wire locking post 5.

Claims

1. A quick-installation solar photovoltaic junction box, characterized in that: The junction box body (1) is provided with conductive contact pieces (2) in the front and back directions on both the left and right sides of the junction box body (1). A through hole is provided in the middle of the conductive contact piece (2). A threaded post in the upper and lower directions is provided in front of the top end of the conductive contact piece (2). A strip groove in the upper and lower directions is provided on the inner side of the outer circumference of the threaded post of the conductive contact piece (2). A wiring block with a through hole in the front and back is provided at the top end of the top end of the conductive contact piece (2). A threaded hole in the upper and lower directions is provided on the top of the wiring block of the conductive contact piece (2). A detachable diode (3) in the left and right directions is placed inside the strip groove between the conductive contact pieces (2). A pin locking cylinder (4) in the upper and lower directions is installed on the outer circumference of the threaded post of the conductive contact piece (2) by thread. A thread is provided on the inner circumference of the pin locking cylinder (4). A limit ring plate is provided on the outer circumference of the bottom of the pin locking cylinder (4). A regular hexagonal structure is provided on the outer circumference of the upper part of the pin locking cylinder (4).

2. The quick-installation solar photovoltaic junction box as described in claim 1, characterized in that: The conductive contact piece (2) has a core wire locking post (5) installed inside the threaded hole in the vertical direction. The core wire locking post (5) has a thread on its outer circumference and a regular hexagonal groove on its top end face.

3. The quick-installation solar photovoltaic junction box as described in claim 2, characterized in that: A junction box cable (6) with a front-to-back direction is inserted in front of the terminal block of the conductive contact piece (2), and the core wire is exposed at the rear end of the junction box cable (6).

4. The quick-installation solar photovoltaic junction box as described in claim 3, characterized in that: The fixing hole of the conductive contact piece (2) is inserted with a fixing locking post (7) in the vertical direction. The lower part of the fixing locking post (7) is provided with a threaded post. The outer circumference of the top of the threaded post of the fixing locking post (7) is provided with an anti-detachment ring plate. The top end face of the threaded post of the fixing locking post (7) is provided with a regular hexagonal groove.

5. The quick-installation solar photovoltaic junction box as described in claim 4, characterized in that: A photovoltaic junction box (8) in the left-right direction is installed below the fixed locking column (7) by threads. A front-back limiting groove is opened in the middle of the left and right sides of the bottom of the photovoltaic junction box (8). A threaded blind hole is opened in the middle of the limiting groove of the photovoltaic junction box (8). A wire tube that runs through the front and back is provided on the left and right sides of the front end face of the photovoltaic junction box (8).

6. The quick-installation solar photovoltaic junction box as described in claim 5, characterized in that: The photovoltaic junction box (8) has a threaded outer circumference at the rear of the wire tube, a conical surface at the outer circumference at the front of the wire tube, a deformable annular groove at the inner circumference in the middle of the wire tube, and six through-hole deformable grooves in a ring array on the front end face of the wire tube.

7. The quick-installation solar photovoltaic junction box as described in claim 6, characterized in that: The outer circumference of the photovoltaic junction box (8) is threaded with a cable locking cylinder (9) in the front-to-back direction. The inner circumference of the rear end of the cable locking cylinder (9) is threaded, the inner circumference of the middle of the cable locking cylinder (9) is provided with a frustum hole, the inner circumference of the front end of the cable locking cylinder (9) is provided with a cable hole, and the outer circumference of the front end of the cable locking cylinder (9) is provided with a regular hexagonal structure.

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