Cable pressing block sealing type photovoltaic junction box

Abstract

The utility model discloses a cable pressing block sealing type photovoltaic junction box, which belongs to the technical field of photovoltaic modules and comprises a box body, a bump is fixedly connected onto the side wall of the box body, a sealing block is fixedly connected onto the bump, semicircular grooves are respectively arranged on one side of the sealing block opposite to the bump, and when the sealing block is connected onto the bump, the two semicircular grooves are encircled to form a through hole. A cable in the box body extends out of the box body through the through hole, a glue pouring cavity is formed in the through hole, and the cable penetrates through the glue pouring cavity. A plurality of glue filling holes are formed in the sealing block and are communicated with the glue filling cavity. According to the utility model, the glue filling cavity can be filled with glue and the glue is tightly wrapped outside the cable, so that on one hand, the waterproof performance of the cable is realized, on the other hand, the connection stability of the cable, the box body and the sealing block is increased, the risk of waterproof failure of the junction box is reduced, and the firmness of the junction box is improved; the structure is simple and the operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic components, in particular to a cable pressing block sealed type photovoltaic junction box. Background Art

[0002] The photovoltaic junction box is very important in the composition of solar panels. Its main function is to connect the electricity generated by solar cells to external lines. The cables in the junction box need to be fixed on the side wall of the junction box and extend out of the junction box. The existing photovoltaic junction box cable fixation adopts ultrasonic welding to weld the sealing block to the junction box, so that the cable fixing clamp is set between the sealing block and the junction box. However, this connection method has weak sealing performance, especially when used in offshore environments, there is a high risk of waterproof failure.

[0003] To this end, a cable pressing block sealed type photovoltaic junction box is proposed. Utility Model Content

[0004] The utility model aims to provide a cable pressing block sealed type photovoltaic junction box, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following solutions: The utility model provides a cable pressure block sealed photovoltaic junction box, comprising a box body, a convex block fixedly connected to the side wall of the box body, a sealing block fixedly connected to the convex block, and a semicircular groove is respectively provided on one side of the sealing block opposite to the convex block. When the sealing block is connected to the convex block, the two semicircular grooves are surrounded to form a through hole, and the cable in the box body extends out of the box body through the through hole, and a glue injection cavity is provided in the through hole, and the cable passes through the glue injection cavity;

[0006] The sealing block is provided with a plurality of glue injection holes, and the glue injection holes are communicated with the glue injection cavity.

[0007] Preferably, two clamping blocks are fixedly connected to the groove wall of the semicircular groove, and the clamping blocks on the two semicircular grooves are arranged correspondingly. When the sealing block is connected to the protrusion, the two opposite clamping blocks are combined to form an annular clamping ring, and the annular clamping ring is sleeved outside the cable and clamps the cable. The space between the two annular clamping rings and the cable is the glue filling cavity.

[0008] Preferably, a groove is formed on a side of the protrusion close to the sealing block, and the sealing block is embedded in the groove so that the protrusion is flush with the sealing block.

[0009] Preferably, two communicating grooves are formed on the outer wall of the sealing block, the two communicating grooves are respectively located on both sides of the glue pouring cavity and are communicated with the glue pouring cavity, and the glue pouring hole is communicated with the communicating grooves.

[0010] Preferably, a plurality of positioning strips are fixedly connected to one side of the sealing block close to the protrusion, and the plurality of positioning strips are symmetrically distributed on both sides of the semicircular groove and symmetrically distributed on both sides of the connecting groove. A plurality of positioning grooves are opened on the groove, and the plurality of positioning grooves are arranged in a one-to-one correspondence with the plurality of positioning strips, and the positioning strips are inserted into the positioning grooves.

[0011] The utility model discloses the following technical effects: the sealing block is welded on the protrusion, the cable in the box body extends out of the box body through the through hole, so that the cable is initially fixed, and then glue is poured into the glue filling cavity through the glue filling hole, the glue fills the glue filling cavity and is tightly wrapped around the cable, which can achieve waterproofing of the cable on the one hand, and increase the connection stability of the cable, the box body and the sealing block on the other hand, reduce the risk of waterproofing failure of the junction box, and improve the reliability of the junction box; and the structure is simple and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0013] Figure 1 It is an axonometric drawing of the utility model;

[0014] Figure 2 It is a top view of the utility model;

[0015] Figure 3 for Figure 2 Cross-section view in the AA direction;

[0016] Figure 4 for Figure 2 Cross-section along the middle BB direction;

[0017] Figure 5 This is a schematic diagram of the structure of the sealing block in the utility model;

[0018] Figure 6 It is a structural schematic diagram of the convex block in the utility model.

[0019] In the figure: 1, box body; 2, convex block; 3, sealing block; 4, semicircular groove; 5, through hole; 6, glue filling cavity; 7, glue filling hole; 8, clamping block; 9, annular clamping ring; 10, groove; 11, connecting groove; 12, positioning strip; 13, positioning groove; 14, cable. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Reference Figure 1-Figure 6 The utility model provides a cable pressing block sealed photovoltaic junction box, comprising a box body 1, a convex block 2 is fixedly connected to the side wall of the box body 1, a sealing block 3 is fixedly connected to the convex block 2, and a semicircular groove 4 is respectively opened on the side opposite to the convex block 2. When the sealing block 3 is connected to the convex block 2, the two semicircular grooves 4 are surrounded to form a through hole 5, and the cable 14 in the box body 1 extends out of the box body 1 through the through hole 5. A glue injection cavity 6 is arranged in the through hole 5, and the cable 14 passes through the glue injection cavity 6;

[0023] The sealing block 3 is provided with a plurality of glue injection holes 7, which are connected to the glue injection cavity 6;

[0024] The box body 1 is provided with a connector, a diode and other structures, which are the prior art and will not be described in detail here;

[0025] The sealing block 3 is welded to the protrusion 2, and the cable 14 in the box body 1 extends out of the box body 1 through the through hole 5 to achieve preliminary fixation of the cable 14, and then glue is poured into the glue filling cavity 6 through the glue filling hole 7. The glue fills the glue filling cavity 6 and is tightly wrapped around the cable 14. On the one hand, the cable 14 can be waterproofed, and on the other hand, the connection stability of the cable 14, the box body 1, and the sealing block 3 is increased, the risk of waterproof failure of the junction box is reduced, and the reliability of the junction box is improved; the structure is simple and the operation is convenient.

[0026] To further optimize the solution, two clamping blocks 8 are fixedly connected to the groove wall of the semicircular groove 4, and the clamping blocks 8 on the two semicircular grooves 4 are arranged correspondingly. When the sealing block 3 is connected to the protrusion 2, the two opposite clamping blocks 8 are combined to form an annular clamping ring 9, and the annular clamping ring 9 is sleeved outside the cable 14 and clamps the cable 14. The space between the two annular clamping rings 9 and the cable 14 is a glue filling cavity 6.

[0027] According to a further optimized solution, a groove 10 is provided on one side of the protrusion 2 close to the sealing block 3, and the sealing block 3 is embedded in the groove 10, so that the protrusion 2 is flush with the sealing block 3; thus, welding is facilitated at a flush location, improving the convenience of operation;

[0028] Further optimizing the scheme, two connecting grooves 11 are opened on the outer wall of the sealing block 3, the two connecting grooves 11 are respectively located on both sides of the glue pouring cavity 6 and are connected to the glue pouring cavity 6, and the glue pouring hole 7 is connected to the connecting groove 11;

[0029] The glue enters into the glue filling cavity 6 through the glue filling hole 7 and the connecting groove 11 in sequence. The connecting groove 11 is distributed on both sides of the glue filling cavity 6, thereby increasing the connection area of ​​the glue and improving the connection stability and waterproofness.

[0030] Further optimized solution, a plurality of positioning strips 12 are fixedly connected to one side of the sealing block 3 close to the protrusion 2, and the plurality of positioning strips 12 are symmetrically distributed on both sides of the semicircular groove 4 and symmetrically distributed on both sides of the connecting groove 11. A plurality of positioning grooves 13 are opened on the groove 10, and the plurality of positioning grooves 13 are arranged one by one with the plurality of positioning strips 12, and the positioning strips 12 are inserted into the positioning grooves 13;

[0031] By providing the positioning strip 12 and the positioning groove 13 , a step is formed at the connection to improve the sealing performance.

[0032] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A cable block sealed photovoltaic junction box, characterized in that: The invention comprises a box body (1), a convex block (2) is fixedly connected to the side wall of the box body (1), a sealing block (3) is fixedly connected to the convex block (2), a semicircular groove (4) is respectively provided on one side of the sealing block (3) opposite to the convex block (2), when the sealing block (3) is connected to the convex block (2), the two semicircular grooves (4) are surrounded to form a through hole (5), the cable (14) in the box body (1) extends out of the box body (1) through the through hole (5), a glue injection cavity (6) is provided in the through hole (5), and the cable (14) passes through the glue injection cavity (6); The sealing block (3) is provided with a plurality of glue injection holes (7), and the glue injection holes (7) are connected to the glue injection cavity (6).

2. The cable pressing block sealed photovoltaic junction box according to claim 1, characterized in that: Two clamping blocks (8) are fixedly connected to the groove wall of the semicircular groove (4), and the clamping blocks (8) on the two semicircular grooves (4) are arranged correspondingly. When the sealing block (3) is connected to the protruding block (2), the two opposing clamping blocks (8) are combined to form an annular clamping ring (9), and the annular clamping ring (9) is sleeved outside the cable (14) and clamps the cable (14). The space between the two annular clamping rings (9) and the cable (14) is the glue injection cavity (6).

3. The cable pressing block sealed photovoltaic junction box according to claim 1, characterized in that: A groove (10) is provided on one side of the convex block (2) close to the sealing block (3), and the sealing block (3) is embedded in the groove (10) so that the convex block (2) is flush with the sealing block (3).

4. The cable pressing block sealed photovoltaic junction box according to claim 3, characterized in that: Two communication grooves (11) are provided on the outer wall of the sealing block (3); the two communication grooves (11) are respectively located on two sides of the glue pouring cavity (6) and are in communication with the glue pouring cavity (6); the glue pouring hole (7) is in communication with the communication grooves (11).

5. The cable pressing block sealed photovoltaic junction box according to claim 4, characterized in that: A plurality of positioning strips (12) are fixedly connected to one side of the sealing block (3) close to the protrusion (2); the plurality of positioning strips (12) are symmetrically distributed on both sides of the semicircular groove (4) and symmetrically distributed on both sides of the connecting groove (11); a plurality of positioning grooves (13) are opened on the groove (10); the plurality of positioning grooves (13) and the plurality of positioning strips (12) are arranged in a one-to-one correspondence; the positioning strips (12) are inserted into the positioning grooves (13).

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