Photovoltaic connector, connector assembly, junction box and photovoltaic assembly

Abstract

The utility model discloses a photovoltaic connector, a connector assembly, a junction box and a photovoltaic assembly, the photovoltaic connector comprises a connector body, a protective cap, a plug and a flower basket which are matched with each other and are sleeved outside a cable, and the protective cap comprises a first accommodating cavity located at a wire inlet end of the protective cap and a second accommodating cavity communicated with the first accommodating cavity. The inner diameter of the first containing cavity is smaller than that of the second containing cavity, the wire inlet end of the connector body is inserted into the second containing cavity, the plug is inserted into the wire inlet end of the connector body, the basket is arranged on the outer side wall of the plug in a sleeved mode, and the plug and / or the basket extend into the first containing cavity from the second containing cavity. The axial lengths of the plug, the flower basket and the sealing ring are lengthened, the reinforcing ribs are arranged on the inner wall of the plug, a clamping jaw at the end of the flower basket is omitted, and the waterproof sealing effect of the plug and the sealing ring is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and particularly relates to a photovoltaic connector, a connector assembly, a junction box and a photovoltaic module. Background Art

[0002] Existing connectors generally have a housing and a cable passing through the housing. Especially for the connectors of photovoltaic modules, since they are applied in outdoor environments, they need to have strong waterproof performance.

[0003] Currently, the waterproof method of connectors is generally to sleeved a plug on the cable inside the housing, and the plug is used to tightly wrap the cable to prevent rainwater from entering the inside of the connector along the cable. And, a flower basket for squeezing the plug is generally installed on the plug, and the inner wall of the plug is made to closely adhere to the outer wall of the cable by the squeezing force provided by the flower basket, so as to reduce the gap between the inner wall of the plug and the outer wall of the cable. In addition, when the male connector and the female connector are plugged into each other, a waterproof sealing ring is correspondingly arranged at the plugging part of the two to enhance their waterproof performance.

[0004] However, the existing connectors still have the following problems:

[0005] 1. The range and degree of the close fit between the plug and the cable are small, resulting in limited waterproof performance of the plug;

[0006] 2. The claw at the end of the flower basket is easy to damage the plug, resulting in easy water leakage at the plug and reducing the waterproof performance of the plug;

[0007] 3. The axial length of the waterproof sealing ring is small and the waterproof distance is short.

[0008] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0009] The purpose of the present utility model is to provide a photovoltaic connector for solving the problem of insufficient waterproof ability of existing photovoltaic connectors.

[0010] To achieve the above purpose, a specific embodiment of the present utility model provides a photovoltaic connector, which includes a connector body, a protection cap, a plug and a flower basket that are cooperatively sleeved outside the cable. The protection cap includes a first accommodating cavity at its cable inlet end and a second accommodating cavity communicating with the first accommodating cavity. The inner diameter of the first accommodating cavity is smaller than that of the second accommodating cavity. The cable inlet end of the connector body is inserted into the second accommodating cavity. The plug is inserted into the cable inlet end of the connector body. The flower basket is sleeved on the outer side wall of the plug. Among them, the plug and / or the flower basket extend from the second accommodating cavity to the first accommodating cavity.

[0011] In one or more embodiments of the present utility model, one or more reinforcing ribs are protrudingly provided on the inner wall of the plug.

[0012] In one or more embodiments of the present utility model, the plug includes a first segment inserted into the wire inlet end of the connector body and a second segment pressed between the cable and the protective cap. A first reinforcing rib is protrudingly provided on the inner wall of the first segment, and a second reinforcing rib is protrudingly provided on the inner wall of the second segment. The thickness of the first reinforcing rib is greater than that of the second reinforcing rib.

[0013] In one or more embodiments of the present utility model, the outer diameter of the first segment is greater than that of the second segment. The first segment includes a first stop surface near one end of the flower basket. The first stop surface is flush with the end surface of the wire inlet end of the connector body. The end surface of the flower basket near the first segment abuts against both the first stop surface and the end surface of the wire inlet end of the connector body at the same time.

[0014] In one or more embodiments of the present utility model, a second stop surface is provided on the inner wall of the connector body, and the end surface of the first segment abuts against the second stop surface.

[0015] In one or more embodiments of the present utility model, the flower basket includes an annular portion and a claw portion extending from the end surface of the annular portion into the first accommodating cavity. In the direction close to the annular portion, the thickness of the part of the claw portion located in the first accommodating cavity gradually increases.

[0016] In one or more embodiments of the present utility model, a sealing ring is sleeved on the outer peripheral side of the connector body, and the width of the sealing ring is greater than its thickness.

[0017] In one or more embodiments of the present utility model, the width range of the sealing ring is 1.5 - 3 mm.

[0018] In one or more embodiments of the present utility model, the radial cross-section of the sealing ring is rectangular.

[0019] On the other hand, the present utility model also provides a connector assembly, which includes a female connector and a male connector that can be plugged into each other. The female connector and / or the male connector adopts the above-mentioned photovoltaic connector.

[0020] On another aspect, the present utility model also provides a junction box, which includes the above-mentioned connector assembly.

[0021] On still another aspect, the present utility model also provides a photovoltaic module, which includes the above-mentioned junction box.

[0022] Compared with the prior art, the present utility model lengthens the axial lengths of the plug and the flower basket, extends the ends of the plug and the flower basket into the first accommodating cavity of the protective cap, increases the length of the plug for sealing the cable, and improves the waterproof sealing effect of the plug.

[0023] Secondly, reinforcing ribs are added to the inner wall of the plug in the present utility model. After the plug is squeezed by the flower basket, the reinforcing ribs can squeeze the insulating outer skin of the cable, increasing the contact area and the degree of fit between the plug and the cable, and improving the waterproof sealing effect of the plug.

[0024] In addition, the axial length of the lengthened sealing ring in the present utility model is increased, extending the sealing range of the sealing ring and improving the waterproof sealing effect of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is an exploded structure diagram of the photovoltaic connector in Embodiment 1 of the present utility model;

[0027] Figure 2 It is a sectional structure diagram of the photovoltaic connector in Embodiment 1 of the present utility model;

[0028] Figure 3 It is an exploded structure diagram of the photovoltaic connector in Embodiment 2 of the present utility model;

[0029] Figure 4 It is a sectional structure diagram of the photovoltaic connector in Embodiment 2 of the present utility model;

[0030] Figure 5 It is a sectional structure diagram of the connector assembly in Embodiment 3 of the present utility model;

[0031] Figure 6 It is a three-dimensional structure diagram of the plug and the flower basket in Embodiment 1 of the present utility model;

[0032] Figure 7 It is a sectional structure diagram of the plug in Embodiment 1 of the present utility model;

[0033] Figure 8 It is a sectional structure diagram of the protective cap in Embodiment 1 of the present utility model;

[0034] Figure 9 It is a sectional structure diagram of the sealing ring in Embodiment 3 of the present utility model.

[0035] Reference numerals: 1, protective cap; 11, second accommodation cavity; 12, first accommodation cavity; 2, connector body; 21, insertion end; 22, docking end; 3, cable; 4, plug; 41, first segment; 42, second segment; 43, reinforcing rib; 431, first reinforcing rib; 432, second reinforcing rib; 5, basket; 51, ring portion; 52, claw portion; 6, socket; 7, pin; 8, sealing ring; 100, female connector; 200, male connector. Detailed implementation manners

[0036] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "vertical", "horizontal", "top", "bottom", "upper", "lower", "front", "rear", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 therefore should not be construed as a limitation to the present utility model.

[0038] Embodiment 1:

[0039] Refer to Figure 1 , Figure 2 and Figure 8 As shown, this embodiment provides a photovoltaic connector, which is a female connector 100. The photovoltaic connector includes a protective cap 1, a connector body 2, a plug 4, and a basket 5 that are cooperatively sleeved outside the cable.

[0040] Specifically, the protective cap 1 in this embodiment includes a first accommodation cavity 12 at its inlet end and a second accommodation cavity 11 communicating with the first accommodation cavity 12. The inner diameter of the first accommodation cavity 12 is smaller than that of the second accommodation cavity 11. The inlet end of the connector body 2 is inserted into the second accommodation cavity 11, the plug 4 is inserted into the inlet end of the connector body 2, and the basket 5 is sleeved on the outer wall of the plug 4. Among them, the plug 4 and the basket 5 extend from the second accommodation cavity 11 into the first accommodation cavity 12, which is equivalent to increasing the axial length of the plug 4 and the basket 5, improving the contact range between the inner wall of the plug 4 and the outer wall of the cable 3 and the range where the basket 5 presses the plug 4, thereby increasing the length of the sealed cable 3 and improving the waterproof sealing effect of the plug 4 on the cable 3.

[0041] In other embodiments, it is also possible to choose to only increase the axial length of the plug 4 or the flower basket 5, and extend the corresponding end of the plug 4 or the flower basket 5 into the second accommodating cavity 11.

[0042] Preferably, in this embodiment, the protective cap 1 is threadedly connected to the connector body 2.

[0043] Referring to Figure 1 As shown, in this embodiment, a plurality of reinforcing ribs 43 are convexly provided on the inner wall of the plug 4. After the plug 4 is squeezed by the flower basket 5, the reinforcing ribs 43 in the plug 4 can squeeze the insulating outer skin of the cable 3, increasing the contact area and the degree of fit between the plug 4 and the cable 3, reducing the gap between the inner wall of the plug 4 and the outer wall of the cable 3, and improving the sealing performance at the joint of the two.

[0044] In other embodiments, only one reinforcing rib 43 may be provided on the inner wall of the plug 4.

[0045] Referring to Figure 2 and Figure 7 As shown, the plug 4 in this embodiment includes a first segment 41 inserted into the inlet end of the connector body 2 and a second segment 42 pressed between the cable 3 and the protective cap 1.

[0046] According to the above structural design, since the first segment 41 of the plug 4 is located inside the inlet end of the connector body 2 and is basically not squeezed by the flower basket 5, the sealing performance between the first segment 41 and the cable 3 is less than the sealing performance between the second segment 42 and the cable 3. Therefore, in this embodiment, a differentiated design is made for the reinforcing ribs 43 on the inner walls of the first segment 41 and the second segment 42.

[0047] Specifically, in this embodiment, a first reinforcing rib 431 is provided on the inner wall of the first segment 41, and a second reinforcing rib 432 is provided on the inner wall of the second segment 42. The thickness of the first reinforcing rib 431 is greater than the thickness of the second reinforcing rib 432.

[0048] Those skilled in the art can understand that the above thickness represents the dimension in the radial direction of the plug 4.

[0049] The radial cross-section of the reinforcing rib 43 can be set to any one shape or a combination of any multiple shapes, and can specifically be set to a triangle, a rectangle, a circle, an ellipse, or a combination of any several of the above shapes.

[0050] As an example, the radial cross-section of the reinforcing rib 43 is set to an isosceles triangle, and the base of the isosceles triangle is located on the inner wall of the plug 4.

[0051] Referring to Figure 2 、 Figure 6 and Figure 7As shown, in order to ensure the stability of the installation position of the plug 4, in this embodiment, the outer diameter of the first segment 41 is larger than that of the second segment 42. The first segment 41 includes a first stop surface near one end of the flower basket 5, and the first stop surface is flush with the end surface of the inlet end of the connector body 2. The end surface of the flower basket 5 near the first segment 41 abuts against both the first stop surface and the end surface of the inlet end of the connector body 2 at the same time.

[0052] Furthermore, a second stop surface is provided on the inner wall of the connector body 2, and the end surface of the first segment 41 abuts against the second stop surface.

[0053] According to the above structure, both ends of the first segment 41 are held by the first stop surface and the second stop surface respectively to stabilize its own position and prevent the plug 4 from moving along the cable 3.

[0054] Referring to Figure 6 As shown, the flower basket 5 in this embodiment includes a ring portion 51 and a claw portion 52. One end of the ring portion 51 abuts against the end surface of the inlet end of the connector body 2, and the claw portion 52 extends from the other end of the ring portion 51 towards the direction close to the first accommodation cavity 11 and extends into the first accommodation cavity 11.

[0055] Furthermore, in the direction close to the ring portion 51, the thickness of the part of the claw portion 52 located in the second accommodation cavity 12 gradually increases in this embodiment, that is, no claw structure is provided at the end of the claw portion 52 away from the ring portion 51, and the shape of the claw portion 52 is not a conventional L shape, thereby avoiding damage to the cable 3 at the end of the claw portion 52 away from the ring portion 51.

[0056] Referring to Figure 1 and Figure 5 As shown, a sealing ring 8 is sleeved on the outer peripheral side of the connector body 2 in this embodiment. The width of the sealing ring 8 is larger than its thickness, which is equivalent to increasing the width of the sealing ring 8 to increase the contact distance between the inner wall of the sealing ring 8 and the outer wall of the connector body 2, and further increase the sealing range of the sealing ring 8.

[0057] Those skilled in the art can understand that the above thickness refers to the dimension in the radial direction of the sealing ring 8, and the width refers to the dimension in the axial direction of the sealing ring 8.

[0058] Preferably, the width range of the sealing ring 8 in this embodiment is 1.5 - 3 mm, and it can be specifically set to 2 mm, 2.4 mm, 2.5 mm, 2.6 mm or 3 mm, so that the width of the sealing ring 8 in this embodiment is larger than that of a conventional O-ring.

[0059] Furthermore, the sealing ring 8 in this embodiment is sleeved on the plug-in end 21 of the connector body 2, and a sealing groove for accommodating the sealing ring 8 is provided on the outer wall of the circumferential direction of the plug-in end 21.

[0060] Preferably, in this embodiment, the radial cross-section of the sealing ring 8 is rectangular or approximately rectangular.

[0061] Referring to Figure 1 and Figure 2 As shown, in this embodiment, one end of the connector body 2 away from the plug 4 is a plug-in end 21, and a socket 6 connected to the cable 3 is provided inside the plug-in end 21. The plug-in end 21 is used to be inserted inside the docking end 22 of the male-pole connector 200, and the pin 7 inside the docking end 22 is correspondingly inserted into the socket 6.

[0062] Embodiment Two:

[0063] Referring to Figure 3 and Figure 4 As shown, this embodiment provides a photovoltaic connector, and this photovoltaic connector is a male connector 200. This photovoltaic connector includes a protective cap 1, a connector body 2, a plug 4 and a flower basket 5. The structures of the protective cap 1, the plug 4 and the flower basket 5 are exactly the same as those in Embodiment One, and the difference lies in the structure of the connector body 2.

[0064] Specifically, in this embodiment, one end of the connector body 2 away from the plug 4 is a docking end 22, and a pin 7 is provided inside the docking end 22. The docking end 22 of the male connector 200 is for the plug-in end 21 of the female connector 100 to be inserted, and the pin 7 of the male connector 200 is inserted into the socket 6 of the female connector 100.

[0065] Embodiment Three:

[0066] Referring to Figure 5 As shown, this embodiment provides a connector assembly. This connector assembly includes the female connector 100 of Embodiment One and the male connector 200 of Embodiment Two. The female connector 100 and the male connector 200 are inserted and connected to each other.

[0067] Embodiment Four:

[0068] This embodiment provides a junction box, and this junction box includes the connector assembly in Embodiment Three.

[0069] Embodiment Five:

[0070] This embodiment provides a photovoltaic module, and this photovoltaic module includes the junction box in Embodiment Four.

[0071] From the above technical solutions, it can be seen that the present utility model has the following beneficial effects:

[0072] In the present utility model, the axial lengths of the extended plug and the flower basket are increased, and the ends of the plug and the flower basket are extended into the first accommodating cavity of the protective cap, increasing the length of the plug for sealing the cable and improving the waterproof sealing effect of the plug.

[0073] Secondly, after the plug in the utility model is squeezed by the flower basket, the reinforcing ribs on its inner wall can squeeze the insulating outer skin of the cable, increasing the contact area and the degree of fitting between the plug and the cable, and improving the waterproof sealing effect of the plug.

[0074] In addition, the width of the sealing ring in the utility model is greater than that of a conventional O-ring, which can extend the sealing range of the sealing ring and improve the waterproof sealing effect of the sealing ring.

[0075] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the utility model, the utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0076] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A photovoltaic connector, characterized in that, It includes a connector body, a protective cap, a plug and a flower basket which are cooperatively sleeved outside the cable. The protective cap includes a first accommodating cavity at its cable inlet end and a second accommodating cavity communicating with the first accommodating cavity. The inner diameter of the first accommodating cavity is smaller than that of the second accommodating cavity. The cable inlet end of the connector body is inserted into the second accommodating cavity. The plug is inserted into the cable inlet end of the connector body. The flower basket is sleeved on the outer side wall of the plug. Wherein, the plug and / or the flower basket extends from the second accommodating cavity to the first accommodating cavity.

2. The photovoltaic connector according to claim 1, characterized in that One or more reinforcing ribs are protruded on the inner wall of the plug.

3. The photovoltaic connector according to claim 1, characterized in that, The plug includes a first segment inserted into the cable inlet end of the connector body and a second segment pressed between the cable and the protective cap. A first reinforcing rib is protruded on the inner wall of the first segment, and a second reinforcing rib is protruded on the inner wall of the second segment. The thickness of the first reinforcing rib is greater than that of the second reinforcing rib.

4. The photovoltaic connector according to claim 3, wherein The outer diameter of the first segment is greater than that of the second segment. The first segment includes a first stop surface near the flower basket end, and the first stop surface is flush with the end surface of the cable inlet end of the connector body. The end surface of the flower basket near the first segment abuts against both the first stop surface and the end surface of the cable inlet end of the connector body.

5. The photovoltaic connector according to claim 3, characterized in that, A second stop surface is provided on the inner wall of the connector body, and the end surface of the first segment abuts against the second stop surface.

6. The photovoltaic connector according to claim 1, characterized in that The flower basket includes a ring portion and claw portions extending from the end surface of the ring portion into the first accommodating cavity. In the direction close to the ring portion, the thickness of the part of the claw portion located in the first accommodating cavity gradually increases.

7. The photovoltaic connector according to claim 1, wherein A sealing ring is sleeved on the outer peripheral side of the connector body, and the width of the sealing ring is greater than its thickness.

8. The photovoltaic connector according to claim 7, wherein The width range of the sealing ring is 1.5 - 3 mm; and / or, The radial cross-section of the sealing ring is rectangular.

9. A connector component, characterized in that, The connector assembly includes a female connector and a male connector which can be plugged into each other, and the female connector and / or the male connector adopts the photovoltaic connector as described in any one of claims 1 to 8.

10. A junction box, characterized in that, The junction box includes the connector assembly as described in claim 9.

11. A photovoltaic module, characterized in that, The photovoltaic module includes the junction box as described in claim 10.

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