Photovoltaic connector with retaining structure

Abstract

The invention discloses a photovoltaic connector with a retaining structure, and belongs to the technical field of photovoltaic connectors, the photovoltaic connector comprises a male head main body and a female head main body which are plugged in a matching manner, the plugging end of the male head main body and the female head main body is provided with a middle lock nut, and a latch structure for limiting the loosening of the middle lock nut is arranged between the middle lock nut and the female head main body. An anti-falling flower basket for limiting the falling of the male head main body is arranged between the middle lock nut and the male head main body; cables are inserted into the ends, deviating from each other, of the male connector body and the female connector body respectively, the ends, away from the middle lock nut, of the cables and the male connector body / the female connector body are sleeved with conical inner plugs, the outer sides of the conical inner plugs are covered with nuts, and the nuts are in threaded connection with the male connector body / the female connector body. According to the invention, the latch structure is utilized to limit the risks of loosening, falling and waterproof failure caused by vibration, mistaken touch and the like after the middle lock nut is locked, so that a good waterproof sealing effect is ensured, and the electrical connection is more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic connectors, and particularly to a photovoltaic connector with an anti-retreat structure. Background Art

[0002] Photovoltaic connectors are key components used to connect components, cables, inverters and other devices in a solar photovoltaic system. Their main functions are to achieve electrical connection, transmit electric energy, and ensure the safety and reliability of the system. During the operation of the photovoltaic system, continuous vibrations may be generated due to wind, equipment operation or vehicle jolts, resulting in a gradual attenuation of the friction between the nut and the thread connecting the male head and the female head of the photovoltaic connector, and eventually loosening, which may cause poor contact, electric leakage or even system failure. Based on this, the present invention proposes a photovoltaic connector with an anti-retreat structure. Summary of the Invention

[0003] The purpose of the present invention is to provide a photovoltaic connector with an anti-retreat structure to solve the above-mentioned problems.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A photovoltaic connector with an anti-retreat structure of the present invention includes a male head main body and a female head main body that are cooperatively inserted. An insertion pin is arranged inside the female head main body, and an insertion sleeve that cooperates with the insertion pin is arranged at the end of the male head main body; an intermediate lock nut is arranged at the insertion end of the male head main body and the female head main body, and a tooth-locking structure for restricting the loosening of the intermediate lock nut is arranged between the intermediate lock nut and the female head main body, and an anti-disengagement basket for restricting the disengagement of the male head main body is arranged between the intermediate lock nut and the male head main body; cables are respectively inserted at the ends of the male head main body and the female head main body that are away from each other, and a tapered inner plug is sleeved at the end of the cable away from the intermediate lock nut on the male head main body / female head main body, and a nut is sleeved outside the tapered inner plug, and the nut is threadedly connected to the male head main body / female head main body.

[0006] Further, the tooth-locking structure includes L-shaped rods that are symmetrically distributed and integrally formed at the insertion end of the female head main body, and a pointed tooth portion that is integrally formed at the end of the L-shaped rod and is inclined upward; a plurality of tooth-locking grooves that cooperate with the pointed tooth portion are circumferentially formed at one end of the intermediate lock nut close to the female head main body, and the pointed tooth portion is inserted into the tooth-locking grooves.

[0007] Further, a boss is formed at the insertion end of the female head main body, and the L-shaped rod is integrally formed on the upper end surface of the boss.

[0008] Further, an external thread that is threadedly connected to the intermediate lock nut is arranged at the insertion end of the female head main body, and one side of the inner side wall of the tooth-locking groove is an inclined cut surface, and the inclined direction of the inclined cut surface is opposite to the helix direction of the external thread.

[0009] Furthermore, the L-shaped rod is made of an elastic material.

[0010] Furthermore, the anti-loosening flower basket includes a flower basket main body. A limiting ring is integrally formed at the middle position of the outer side wall of the flower basket main body, and the lower end surface of the limiting ring abuts against the upper end surface of the insertion end of the female head main body; a plurality of clamping claws are integrally formed at the upper end of the flower basket main body, and the clamping claws are circumferentially distributed; the bottoms of the plurality of clamping claws abut against the upper end surface of the insertion part of the insertion end of the male head main body, and the tops abut against the inner side wall of the intermediate lock nut.

[0011] Furthermore, an insertion slot matching with the insertion part is formed in the inner side wall of the flower basket main body.

[0012] Furthermore, an annular embedding groove for clamping the lower part of the flower basket main body is formed in the upper end surface of the insertion end of the female head main body.

[0013] Furthermore, a sealing ring is arranged in the annular embedding groove.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0015] The photovoltaic connector with an anti-loosening structure of the present invention uses a ratchet structure to limit the risk of loosening, falling off and waterproof failure of the intermediate lock nut due to vibration, accidental touch, etc. after locking, ensuring a good waterproof and sealing effect of the photovoltaic connector and making the electrical connection and conductive performance more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the drawings.

[0017] Figure 1 is a schematic structural diagram of the photovoltaic connector with an anti-loosening structure of the present invention;

[0018] Figure 2 is a sectional view of the photovoltaic connector with an anti-loosening structure of the present invention;

[0019] Figure 3 is a schematic structural diagram of the female head main body;

[0020] Figure 4 is a schematic structural diagram of the intermediate lock nut;

[0021] Figure 5 is a schematic structural diagram of the installation state of the anti-loosening flower basket;

[0022] Figure 6 is a sectional view of the installation state structure of the anti-loosening flower basket;

[0023] Figure 7 is a schematic structural diagram of the anti-loosening flower basket;

[0024] Description of reference numerals: 1. male body; 2. female body; 3. middle lock nut; 4. latching tooth structure; 5. nut; 6. cable; 7. conical inner plug; 8. pin; 9. anti-drop basket; 10. sleeve;

[0025] 101, plug-in part;

[0026] 201, boss; 202, external thread;

[0027] 401, L-shaped rod; 402, sharp tooth portion; 403, tooth groove;

[0028] 901, flower basket body; 902, limit ring; 903, clamping claw; 904, plug-in slot. DETAILED DESCRIPTION

[0029] like Figure 1-7 As shown, a photovoltaic connector with a stop structure includes a male body 1 and a female body 2 that are matingly plugged, a pin 8 is arranged inside the female body 2, a socket 10 that matches the pin 8 is arranged at the end of the male body 1, and an intermediate lock nut 3 is installed at the plugging end of the male body 1 and the female body 2. Cables 6 are respectively plugged into the ends of the male body 1 and the female body 2 that are away from each other, and a conical inner plug 7 is sleeved on the end of the cable 6 and the male body 1 / female body 2 that is away from the intermediate lock nut 3, and a nut 5 is provided on the outer cover of the conical inner plug 7, and the nut 5 is threadedly connected to the male body 1 / female body 2.

[0030] A latching tooth structure 4 is installed between the intermediate lock nut 3 and the female head body 2 to limit the loosening of the intermediate lock nut 3. The latching tooth structure 4 includes an L-shaped rod 401 that is symmetrically distributed and integrally formed at the plug-in end of the female head body 2. The end of the L-shaped rod 401 is integrally formed with a sharp tooth portion 402 that is distributed and tilted upward. The circumference of one end of the intermediate lock nut 3 close to the female head body 2 is provided with a plurality of latching tooth grooves 403 that match the sharp tooth portion 402. The sharp tooth portion 402 is inserted into the latching tooth groove 403 to form an anti-slip and anti-retraction structure to prevent the intermediate lock nut 3 from rotating and falling off.

[0031] The female main body 2 is provided with a boss 201 at the plug-in end, and the L-shaped rod 401 is integrally formed on the upper end surface of the boss 201. The boss 201 provides the L-shaped rod 401 with necessary moving space when opened by a special tool, and at the same time prevents the L-shaped rod 401 from exceeding the outer diameter of the female main body 2 under normal conditions, making it beautiful in appearance.

[0032] An external thread 202 that is threadedly connected to the intermediate lock nut 3 is installed at the insertion end of the female head body 2. One side of the inner wall of the tooth slot 403 is an inclined surface, and the inclined direction of the inclined surface is opposite to the rotation direction of the external thread 202. The inclined surface facilitates the insertion of the pointed tooth portion 402 into the tooth slot 403 along the inclined surface.

[0033] The L-shaped rod 401 is made of an elastic material. Due to its own elasticity, when disassembly is required, the L-shaped rod 401 is pressed down by a tool, and the pointed tooth portion 402 moves downward along the vertical direction. The intermediate lock nut 3 is rotated in the reverse direction to achieve the disassembly operation and enable the repeated use of the intermediate lock nut 3.

[0034] An anti-drop flower basket 9 for restricting the detachment of the male head body 1 is installed between the intermediate lock nut 3 and the male head body 1. The anti-drop flower basket 9 includes a flower basket body 901. A limiting ring 902 is integrally formed at the middle position of the outer side wall of the flower basket body 901, and the lower end surface of the limiting ring 902 abuts against the upper end surface of the insertion end of the female head body 2. A plurality of clamping claws 903 are integrally formed at the upper end of the flower basket body 901, and the clamping claws 903 are distributed in a circular pattern; the bottoms of the plurality of clamping claws 903 abut against the upper end surface of the insertion portion 101 of the insertion end of the male head body 1, and the tops abut against the inner side wall of the intermediate lock nut 3.

[0035] An insertion slot 904 that matches the insertion portion 101 is formed on the inner side wall of the flower basket body 901.

[0036] An annular embedding groove for clamping the lower part of the flower basket body 901 is formed on the upper end surface of the insertion end of the female head body 2.

[0037] A sealing ring is installed in the annular embedding groove for waterproofing.

[0038] The installation process of the present invention is as follows:

[0039] First, place the sealing ring in the annular embedding groove at the insertion end of the female head body 2, and clamp the anti-drop flower basket 9 in the annular embedding groove at the insertion end of the female head body 2; then, rotate the intermediate lock nut 3 to threadedly connect it to the external thread 202 of the female head body 2. When the rotation reaches the end, the pointed tooth portion 402 is inserted into the tooth slot 403 along the inclined surface to prevent the intermediate lock nut 3 from loosening by reverse rotation; at the same time, when rotating the intermediate nut 3, the pin 8 of the female head body 2 will be inserted into the inner part of the socket 10 of the male head body 1 until the insertion portion 101 of the male head body 1 is inserted into the insertion slot 904 of the anti-drop flower basket 9, and the bottom of the clamping claw 903 is low on the upper end surface of the insertion portion 101 of the insertion end of the male head body 1, avoiding the detachment of the male head body 1 from the female head body 2 and achieving quick plug-in installation.

[0040] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A photovoltaic connector with a backstop structure, characterized in that: It includes a male head body (1) and a female head body (2) that are fitted and inserted. An insertion pin (8) is arranged inside the female head body (2), and an insertion sleeve (10) that cooperates with the insertion pin (8) is arranged at the end of the male head body (1); an intermediate lock nut (3) is arranged at the insertion end of the male head body (1) and the female head body (2), and a tooth-locking structure (4) that restricts the loosening of the intermediate lock nut (3) is arranged between the intermediate lock nut (3) and the female head body (2), and an anti-detachment flower basket (9) that restricts the detachment of the male head body (1) is arranged between the intermediate lock nut (3) and the male head body (1); cables (6) are respectively inserted at the ends of the male head body (1) and the female head body (2) that are away from each other. A conical inner plug (7) is sleeved at one end of the cable (6) away from the intermediate lock nut (3) and the male head body (1) / female head body (2), and a nut (5) is sleeved outside the conical inner plug (7), and the nut (5) is threadedly connected to the male head body (1) / female head body (2).

2. The photovoltaic connector with a backstop structure according to claim 1, characterized in that: The tooth-locking structure (4) includes L-shaped rods (401) that are symmetrically distributed and integrally formed at the insertion end of the female head body (2), and a pointed tooth part (402) that is integrally formed at the end of the L-shaped rod (401) and is inclined upward; a number of tooth-locking grooves (403) that cooperate with the pointed tooth part (402) are circumferentially formed at one end of the intermediate lock nut (3) close to the female head body (2), and the pointed tooth part (402) is inserted into the tooth-locking groove (403).

3. The photovoltaic connector with an anti-back structure according to claim 2, wherein: A boss (201) is formed at the insertion end of the female head body (2), and the L-shaped rod (401) is integrally formed on the upper end surface of the boss (201).

4. The photovoltaic connector with an anti-back structure according to claim 2, wherein: An external thread (202) that is threadedly connected to the intermediate lock nut (3) is arranged at the insertion end of the female head body (2), and one side of the inner side wall of the tooth-locking groove (403) is an inclined cutting surface, and the inclined direction of the inclined cutting surface is opposite to the rotation direction of the external thread (202).

5. The photovoltaic connector with an anti-back structure according to claim 2, characterized in that: The L-shaped rod (401) is made of an elastic material.

6. The photovoltaic connector with a backstop structure according to claim 1, characterized in that: The anti-detachment flower basket (9) includes a flower basket body (901), a limiting ring (902) is integrally formed at the middle position of the outer side wall of the flower basket body (901), and the lower end surface of the limiting ring (902) abuts against the upper end surface of the insertion end of the female head body (2); a number of claw teeth (903) are integrally formed at the upper end of the flower basket body (901), and the claw teeth (903) are circumferentially distributed; the bottoms of the number of claw teeth (903) abut against the upper end surface of the insertion part (101) at the insertion end of the male head body (1), and the tops abut against the inner side wall of the intermediate lock nut (3).

7. The photovoltaic connector with an anti-back structure according to claim 6, wherein: A plug-in groove (904) that cooperates with the insertion part (101) is formed on the inner side wall of the flower basket body (901).

8. The photovoltaic connector with a backstop structure according to claim 6, wherein: An annular embedding groove for clamping the lower part of the flower basket body (901) is formed on the upper end surface of the insertion end of the female head body (2).

9. The photovoltaic connector with a backstop structure according to claim 8, wherein: A sealing ring is arranged in the annular embedding groove.

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