Dustproof device and photovoltaic connector

Abstract

The utility model relates to a dustproof device and a photovoltaic connector. The dustproof device comprises a dustproof plug; the driving mechanism comprises a rotating rod pivoted to the connector body and a telescopic rod matched with the rotating rod in a sliding mode, and the dustproof plug is fixed to the telescopic rod; and the elastic reset piece is connected between the rotating rod and the telescopic rod and used for driving the telescopic rod to move from the extending position to the retracting position. According to the scheme, through sliding fit of the rotating rod and the telescopic rod, the rotating radius of the dustproof plug can be changed according to requirements, switching of the dustproof plug from the motion state of rotating and aligning the connecting port to the motion state of axially sealing the connecting port is conveniently achieved, and automatic reset of the telescopic rod is achieved through the elastic reset piece in the process; and the operation is simplified, the sealing stability of the dustproof plug to the connecting port is maintained, the practicability is better, and the reliability is higher.

Description

Technical Field

[0001] This application relates to the field of dustproof technology for photovoltaic connectors, and in particular to a dustproof device and a photovoltaic connector. Background Technology

[0002] Photovoltaic connectors, also known as terminal blocks or quick connectors, are indispensable components in photovoltaic power generation systems. Their main function is to connect photovoltaic modules, combiner boxes, controllers, and inverters, ensuring efficient current transmission within the system while minimizing power loss.

[0003] Photovoltaic connectors typically include positive and negative connectors. During installation, the positive and negative connectors need to be connected in series or in parallel frequently, which can easily cause sand and dust to enter the inside of the connectors. Especially in deserts or high-dust environments, dust accumulation can lead to poor contact or even open circuits. Utility Model Content

[0004] Based on this, the present invention provides a dustproof device and a photovoltaic connector, which provides dustproof protection for the connector port and avoids the problem of sand and dust intruding into the connector due to the port being exposed to the outside, causing poor contact or even open circuit.

[0005] This utility model provides a dustproof device for a connector, the connector including a connector body and a connection port, the dustproof device including:

[0006] Dust plugs;

[0007] The drive mechanism includes a rotating rod pivotally connected to the connector body and a telescopic rod slidably engaged with the rotating rod, and the dust plug is fixed to the telescopic rod;

[0008] An elastic reset element is connected between the rotating rod and the telescopic rod, and is used to drive the telescopic rod from the extended position to the retracted position.

[0009] In one embodiment, the dustproof device further includes a limiting mechanism, which includes a first limiting part disposed on the connector body and a second limiting part connected to the telescopic rod. The second limiting part is constrained by the first limiting part when the dustproof plug is misaligned with the connection port, and is released from the constraint when the dustproof plug is aligned with the connection port.

[0010] The constraint is used to limit the telescopic rod to the extended position of the rotating rod, so that the dust plug can move with the rotating rod to be directly opposite the connection port.

[0011] In one embodiment, the first limiting part includes a limiting surface, which is an arc-shaped surface with its concave side facing the first end of the rotating rod; the second limiting part includes a limiting rod connected to the telescopic rod; and the first end of the rotating rod is pivotally connected to the connector body.

[0012] When the dust plug is misaligned with the port, the end of the limiting rod contacts the limiting surface to limit the telescopic rod to the extended position.

[0013] In one embodiment, the first limiting part includes two limiting surfaces, which are symmetrically arranged; the limiting mechanism further includes a limiting groove connected to one end of the two limiting surfaces that are close to each other, and when the end of the limiting rod is facing the limiting groove, the dust plug and the connection port are facing each other.

[0014] The limiting groove is recessed relative to the limiting surface in the direction toward the first end of the rotating rod, and the depth of the recess is equal to or greater than the distance between the extended position and the retracted position on the rotating rod.

[0015] In one embodiment, the first limiting part includes two symmetrically arranged arc-shaped limiting blocks, and the outer arc surfaces of the two limiting blocks constitute two limiting surfaces;

[0016] The two limiting blocks have a "V" shaped groove formed at their close ends, and the "V" shaped groove constitutes the limiting groove.

[0017] In one embodiment, a first torsion spring is provided at the connection between the first end of the rotating rod and the connector body;

[0018] When the dust plug is aligned with the connection port, the first torsion spring is in its original state.

[0019] On the other hand, this utility model also provides a photovoltaic connector, which includes:

[0020] A positive connector, the positive connector comprising a positive connection terminal and a positive dustproof structure;

[0021] A negative connector, the negative connector including a negative connection end and a negative dustproof structure;

[0022] Wherein, the positive electrode dustproof structure and / or the negative electrode dustproof structure is the dustproof device described in any of the above embodiments.

[0023] In one embodiment, the positive electrode dustproof structure is the dustproof device described in any of the above embodiments;

[0024] The negative electrode dustproof structure includes two dustproof covers symmetrically arranged on both sides of the negative electrode connection end; each dustproof cover includes a covering part and an extension part; the covering parts of the two dustproof covers are configured to jointly cover the negative electrode connection end; the side of the extension part of the two dustproof covers near the covering part is hinged to the negative electrode connector, and the side away from the covering part is connected to a traction component;

[0025] The traction component is configured to drive the extension to rotate around the hinge, thereby causing the cover to flip over to cover the negative terminal or flip over to open from the negative terminal.

[0026] In one embodiment, the traction assembly includes a pull rod and a connecting rod;

[0027] The pull rod is slidably mounted on the negative connector;

[0028] One end of the connecting rod is hinged to the pull rod, and the other end is hinged to the side of the extension away from the covering part.

[0029] In one embodiment, a second torsion spring is provided at the hinge point between the extension and the negative connector;

[0030] When the covering portion covers the negative terminal, the second torsion spring is in its original state.

[0031] Compared with the prior art, this utility model has at least the following beneficial effects:

[0032] This dustproof device allows the rotation radius of the dust plug to be changed according to requirements through the sliding cooperation of the rotating rod and the telescopic rod. This facilitates the switching of the dust plug from a rotating alignment connection port to an axial sealing connection port. During this process, the telescopic rod is automatically reset by the elastic reset component, which simplifies operation and helps maintain the stability of the seal of the dust plug on the connection port. This results in better practicality and stronger reliability. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the dustproof device in one embodiment;

[0034] Figure 2 This is a partial schematic diagram of the dustproof device in one embodiment;

[0035] Figure 3 This is a schematic diagram of a dust plug covering a connection port in one embodiment;

[0036] Figure 4 This is a schematic diagram of the structure of a photovoltaic connector in one embodiment;

[0037] Figure 5This is a schematic diagram of the dustproof structure on the negative connector in one embodiment;

[0038] Figure 6 This is a schematic diagram of the structure in one embodiment where the dust cover on the negative connector is flipped open.

[0039] The reference numerals in the accompanying drawings include: connector 10, connector body 11, connection port 12, dust plug 20, fixing cover 21, conical plug 22, drive mechanism 30, rotating rod 31, telescopic rod 32, sleeve 33, rotating joint 34, elastic reset member 40, limiting mechanism 50, first limiting part 51, limiting surface 511, second limiting part 52, limiting groove 53, positive connector 60, negative connector 70, negative dustproof structure 80, dust cover 81, covering part 811, extension part 812, fixing block 82, second torsion spring 83, connecting rod 84, and pull rod 85. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0041] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model.

[0042] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0043] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] As described in the background section, the connector's ports are exposed to the outside, making them highly susceptible to sand and dust intrusion, especially in deserts or high-dust environments, where dust accumulation can lead to poor contact or even a break in the circuit.

[0045] In view of this, this utility model embodiment provides a dustproof device for protecting the connection port 12 of the connector 10 to achieve a dustproof effect.

[0046] The connector 10 can be any existing port connector, such as the positive connector 60 and negative connector 70 of a photovoltaic connector. The following description of the dustproof device takes the positive connector 60 as an example, which includes a connector body 11 and a connection port 12.

[0047] Specifically, the dustproof device provided in this embodiment of the present invention includes:

[0048] Dust plug 20;

[0049] The drive mechanism 30 includes a rotating rod 31 pivotally connected to the connector body 11 and a telescopic rod 32 slidably engaged with the rotating rod 31, with the dust plug 20 fixed to the telescopic rod 32.

[0050] The elastic reset member 40 is connected between the rotating rod 31 and the telescopic rod 32, and is used to drive the telescopic rod 32 from the extended position to the retracted position.

[0051] The working principle of the dustproof device provided in the embodiments of this utility model is as follows:

[0052] In the initial state, the dust plug 20 is misaligned with the connection port 12, so that the telescopic rod 32 is in the extended position and the elastic reset member 40 is elastically charged. At this time, the dust plug 20 has a large rotation radius, so that when the rotating rod 31 rotates, the dust plug 20 can move smoothly to the front end of the connection port 12 and align with its axis, without causing structural interference with the connector body 11.

[0053] After the dust plug 20 moves to be axially aligned with the connection port 12, the dust plug 20 has not yet completely covered the connection port 12. At this time, the telescopic rod 32 is released, and the elastic reset member 40 can drive the telescopic rod 32 from the extended position to the retracted position, thereby driving the dust plug 20 closer to the connection port 12 until it completely covers the connection port 12, thus protecting the connection port 12.

[0054] This dustproof device, through the sliding cooperation of the rotating rod 31 and the telescopic rod 32, allows the rotation radius of the dust plug 20 to be changed according to requirements. This facilitates the switching of the dust plug 20 from the rotational alignment state of the connecting port 12 to the axial sealing state of the connecting port 12. During this process, the telescopic rod 32 is automatically reset by the elastic reset member 40, which simplifies operation and helps maintain the stability of the seal of the dust plug 20 on the connecting port 12, resulting in better practicality and stronger reliability.

[0055] The dustproof device provided in the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0056] like Figure 1 As shown, the dustproof device includes a dust plug 20, a drive mechanism 30, and a limiting mechanism 50.

[0057] The dust plug 20 is used to cover the connection port 12 of the connector 10 to provide protection for the connection port 12 and ensure the dustproof effect of the port.

[0058] For example, see Figure 1 The dust plug 20 includes a fixed cover 21, which is a cover that can at least cover the connection port 12. That is, the area of ​​the fixed cover 21 is larger than the port area of ​​the connection port 12, so that when the fixed cover 21 covers the connection port 12, the connection port 12 can be completely sealed to achieve the dustproof effect.

[0059] Further, see Figure 1 The fixed cover 21 is also provided with a conical plug 22. The conical plug 22 is a frustum-shaped structure made of flexible material (such as rubber). It is located at the center of the fixed cover 21 and can be embedded into the interior of the connection port 12. In this way, by covering the connection port 12 with the fixed cover 21 and embedding the conical plug 22 into the interior of the connection port 12, the combination of the two can further enhance the dustproof effect on the connection port 12.

[0060] See Figure 1 The dust plug 20 is movably connected to the connector body 11 via the drive mechanism 30. The drive mechanism 30 is used to drive the dust plug 20 to be directly opposite or misaligned with the connection port 12, so as to switch the dust plug 20 between the covered state of covering the connection port 12 and the open state of opening the connection port 12.

[0061] For details, see Figure 1 The drive mechanism 30 includes a rotating rod 31 and a telescopic rod 32. The rotating rod 31 is rotatably connected to the connector body 11, the telescopic rod 32 is disposed on the rotating rod 31, and the dust plug 20 is disposed on the telescopic rod 32. Thus, by rotating the rotating rod 31, the telescopic rod 32 can drive the dust plug 20 to move, thereby switching the dust plug 20 between a position directly opposite the connection port 12 and a misaligned position.

[0062] Specifically, see Figure 1 The first end of the rotating rod 31 is pivotally connected to the connector body 11, allowing the rotating rod 31 to rotate or swing around its first end. For example, the first end of the rotating rod 31 is provided with a rotating joint 34, which rotates with the connector body 11 through shaft hole fitting, bearing installation, or other means.

[0063] In this embodiment, the rotary joint 34 is preferably rotatably engaged with the connector body 11 through a shaft hole, thereby providing a basis for the automatic reset of the dust plug 20.

[0064] For example, a first torsion spring is connected between the rotary joint 34 and the connector body 11, and the installation of the first torsion spring satisfies the following condition: when the dust plug 20 is aligned with the connection port 12, the first torsion spring is in its original state. In this way, when the dust plug 20 is aligned with the connection port 12, the first torsion spring does not undergo elastic deformation, which can maintain the stability of the rotating rod 31 when the dust plug 20 is in the aligned position. When an external force drives the rotating rod 31 to rotate upward or downward to open the connection port 12, the first torsion spring can undergo elastic deformation and charge. Based on this elastic charging, when the external force is lost, the first torsion spring can elastically recover, thereby driving the dust plug 20 to automatically reset through the rotating rod 31, realizing automatic covering of the connection port 12 and improving the convenience of use.

[0065] See Figure 2 The telescopic rod 32 is disposed on the second end of the rotating rod 31, and the two are in sliding engagement. For example, the end of the telescopic rod 32 has a hollow sleeve 33, and the second end of the rotating rod 31 extends into the interior of the sleeve 33 and forms a sliding engagement with the sleeve 33. In this way, the telescopic rod 32 can slide axially on the rotating rod 31, thereby realizing the adjustment of the axial position of the dust plug 20.

[0066] Based on the sliding fit of the telescopic rod 32 and the rotating rod 31, the telescopic rod 32 has an extended position and a retracted position on the rotating rod 31. The length combination of the telescopic rod 32 and the rotating rod 31 satisfies the following: when the telescopic rod 32 is in the extended position, the rotation radius of the dust plug 20 at the end of the telescopic rod 32 (i.e., the distance between the dust plug 20 and the first end of the rotating rod 31) is greater than the distance between the connecting port 12 and the rotation center. This allows the dust plug 20 to move until the front end of the connecting port 12 is axially aligned with the connecting port 12 while the telescopic rod 32 is in the extended position, avoiding motion interference between the dust plug 20 and the connector body 11. When the telescopic rod 32 is in the retracted position, the dust plug 20 and the rotating rod 31... The distance between the first ends of the connecting port 12 is less than or equal to the distance between the connecting port 12 and the rotation center. For example, when the dust plug 20 is only composed of the fixed cover 21, the distance between the dust plug 20 and the first end of the rotating rod 31 can be equal to the distance between the connecting port 12 and the rotation center, so that the fixed cover 21 can completely cover the connecting port 12. When the dust plug 20 is composed of the fixed cover 21 and the conical plug 22, the distance between the dust plug 20 and the first end of the rotating rod 31 can be less than the distance between the connecting port 12 and the rotation center, so that the fixed cover 21 can completely cover the connecting port 12, while the conical plug 22 can also be embedded in the connecting port 12, achieving more effective dust protection for the connecting port 12.

[0067] Regarding the above design, when using this dustproof device, it is only necessary to keep the telescopic rod 32 in the extended position when the dust plug 20 is in the misaligned position to ensure that the dust plug 20 can move with the rotating rod 31 to be axially opposite to the connection port 12, that is, to the aligned position. After the dust plug 20 moves to the aligned position, switching the telescopic rod 32 from the extended position to the retracted position will cover the connection port 12 with the dust plug 20 and embed the conical plug 22 into the connection port 12, thereby achieving the covering and protection of the connection port 12.

[0068] It should be noted that, in this embodiment, any position on the rotating rod 31 where the rotation radius of the dust plug 20 is greater than the distance between the connecting port 12 and the rotation center can be considered as the extended position; while the retracted position is the fixed position, where the fixing cover 21 of the dust plug 20 is completely fitted to the connecting port 12 and the conical plug 22 is completely embedded in the connecting port 12, so that the position of the telescopic rod 32 is the retracted position.

[0069] Furthermore, in this embodiment, in order to ensure that the telescopic rod 32 can remain in the extended position when the dust plug 20 is in the misaligned position, a limiting mechanism 50 is also provided between the connector body 11 and the telescopic rod 32.

[0070] See Figure 2 The limiting mechanism 50 includes a first limiting part 51 and a second limiting part 52. The first limiting part 51 is disposed on the connector body 11, and the second limiting part 52 is connected to the telescopic rod 32. When the dust plug 20 is misaligned with the connection port 12, the second limiting part 52 is constrained by the first limiting part 51, so that the telescopic rod 32 is limited to the extended position. When the dust plug 20 is aligned with the connection port 12, the second limiting part 52 is released from the constraint of the first limiting part 51, so that the telescopic rod 32 can slide from the extended position to the retracted position under the action of external force. Therefore, when the dust plug 20 is in the misaligned position, the cooperation of the first limiting part 51 and the second limiting part 52 can limit the telescopic rod 32 to the extended position, ensuring that the dust plug 20 can move with the rotating rod 31 to be directly opposite the connection port 12. When the dust plug 20 is in the directly opposite position, the limiting of the telescopic rod 32 can be released, allowing it to move the dust plug 20 toward the connection port 12 until it completely covers the connection port 12. In this way, by linking the limiting mechanism 50 with the rotation of the rotating rod 31, the telescopic rod 32 can be automatically locked and unlocked in the corresponding state based on the rotation drive of the rotating rod 31, further improving the convenience of operation.

[0071] For details, see Figure 1 and Figure 2The first limiting part 51 includes a limiting surface 511 disposed on the connector body 11, and the second limiting part 52 includes a limiting rod connected to the telescopic rod 32. When the dust plug 20 is misaligned with the connection port 12, the end of the limiting rod contacts the limiting surface 511. When the end of the limiting rod contacts the limiting surface 511, the distance between the dust plug 20 and the first end of the rotating rod 31 is greater than the distance between the connection port 12 and the first end of the rotating rod 31. That is, the telescopic rod 32 can be positioned in the extended position by the cooperation of the limiting rod and the limiting surface 511, and the telescopic rod 32 will always remain in the extended position during the rotation of the rotating rod 31, ensuring that the dust plug 20 can move to the front end of the connection port 12.

[0072] See Figure 1 and Figure 2 Specifically, the limiting surface 511 can be an arc-shaped surface with its concave side facing the first end of the rotating rod 31. For example, the limiting surface 511 can be an arc-shaped surface whose center coincides with the rotation center of the rotating rod 31, so that the arc trajectory of the limiting surface 511 matches the trajectory of the end of the limiting rod when it rotates. In this way, during the process of the rotating rod 31 driving the limiting rod to rotate, the limiting surface 511 can provide guidance for the limiting rod, avoiding interference between the rotation of the limiting rod and the movement of the limiting rod along the limiting surface 511, thus ensuring the smooth movement of the limiting rod.

[0073] For more details, see Figure 2 The first limiting part 51 includes an arc-shaped limiting block disposed on the connector body 11, and the outer arc surface of the limiting block is the aforementioned limiting surface 511.

[0074] Of course, in other embodiments, the first limiting part 51 can also be a ring structure. The ring structure is concentrically arranged with the first end of the rotating rod 31. The outer ring surface of the ring structure is the limiting surface 511. In this way, the ring structure can ensure that when the dust plug 20 is in the misaligned position, the limiting rod is always limited by the limiting surface 511, ensuring that the telescopic rod 32 is in the extended position.

[0075] Further, see Figure 2 The limiting mechanism 50 also includes a limiting groove 53 that connects to the limiting surface 511. The limiting groove 53 is a recessed groove that faces the first end of the rotating rod 31 relative to the limiting surface 511, and the groove is located on the same horizontal plane as the rotation center of the rotating rod 31 and the center of the connecting port 12. Thus, during the process of the dust plug 20 switching from the misaligned position to the aligned position, the end of the limiting rod also moves from the limiting surface 511 to be aligned with the limiting groove 53. At this time, the limiting surface 511 releases the limiting rod, allowing the telescopic rod 32 to slide axially to change the axial position of the dust plug 20.

[0076] In this embodiment, the distance between the bottom of the limiting groove 53 and the first end of the rotating rod 31 is less than the distance between the limiting surface 511 and the first end of the rotating rod 31, and the difference between the two, i.e. the depth of the limiting groove 53, is equal to or greater than the distance between the extended position and the retracted position of the rotating rod 31. That is to say, the recessed depth of the limiting groove 53 is greater than the axial distance of the telescopic rod 32 when it slides from the extended position to the retracted position, so that when the limiting rod moves to the limiting groove 53 and moves towards the bottom of the groove, it can at least drive the telescopic rod 32 from the extended position to the retracted position, so that the dust plug 20 can completely cover the connection port 12.

[0077] Based on the above, the limiting groove 53 can not only switch the telescopic rod 32 from the extended position to the retracted position and cover the connection port 12 with the dust plug 20, but also limit the limiting rod in the vertical direction through the limiting groove 53, so as to ensure the positioning stability of the limiting rod and the telescopic rod 32, thereby ensuring the positioning stability of the dust plug 20 and ensuring the dustproof effect.

[0078] In some embodiments, the limiting groove 53 may be a groove provided on the first limiting portion 51. For example, see Figure 2 The first limiting part 51 includes two limiting blocks, which are symmetrically arranged vertically, and the ends of the two limiting blocks form a "V"-shaped groove, which is the limiting groove 53. This arrangement, using two limiting blocks to form the limiting groove 53, is simple in structure and easy to implement. Furthermore, the two limiting blocks form two limiting surfaces 511, located on the upper and lower sides of the limiting groove 53 respectively and both connecting to the limiting groove 53. This allows the dust plug 20 to be misaligned with the connecting port 12 by moving the rotating rod 31 up or down during the opening operation of the connecting port 12. Thus, the specific rotation direction of the rotating rod 31 is not limited, making the operation simpler and more convenient.

[0079] See Figure 2 In this embodiment, an elastic reset member 40 is also provided between the telescopic rod 32 and the rotating rod 31. The elastic reset member 40 is used to apply an elastic force to the telescopic rod 32 toward the first end of the rotating rod 31, so that the limiting rod can abut against the limiting surface 511 when the dust plug 20 is in the misaligned position, thus ensuring the overall movement stability. At the same time, the elastic force can also drive the dust plug 20 to cover the connection port 12 when the dust plug 20 is in the aligned position, thus ensuring the dustproof effect.

[0080] For example, see Figure 2The elastic reset element 40 is a spring, which is disposed inside the sleeve 33 and sleeved on the rotating rod 31. It is limited between the limiting plate at the second end of the rotating rod 31 and the bottom of the sleeve 33. The spring also satisfies the following conditions: when the telescopic rod 32 is in the retracted position, the spring is in its original state or compressed state; when the telescopic rod 32 is in the extended position, the spring is compressed state. Thus, when the limiting rod is limited on the limiting surface 511, the spring is compressed and exerts an elastic force on the telescopic rod 32 toward the first end of the rotating rod 31, allowing the limiting rod to stably abut against the limiting surface 511, ensuring the stability of the telescopic rod 32's movement. When the limiting rod moves to the limiting groove 53 and the constraint is released, the elastic force can cause the telescopic rod 32 to automatically slide from the extended position to the retracted position, realizing the axial sliding of the dust plug 20 and completing the automatic sealing of the connection port 12, simplifying the operation.

[0081] Further, see Figure 1 In this embodiment, two rotating rods 31 are symmetrically arranged, and each rotating rod 31 is slidably fitted with a telescopic rod 32. The outer ends of the two telescopic rods 32 are connected to the dust plug 20 through plates, forming a "U"-shaped connecting frame. Thus, when the two rotating rods 31 rotate synchronously, the dust plug 20 can be moved through the two telescopic rods 32. Correspondingly, two sets of limiting mechanisms 50 are also symmetrically arranged to support and limit the telescopic rods 32 on both sides, ensuring that the extension and retraction states of the telescopic rods 32 on both sides are consistent, thereby improving the support stability and movement stability of the dust plug 20. Of course, in other embodiments, the telescopic rod 32 can also be designed as a "U"-shaped structure. During installation, one side slides with one of the rotating rods 31, and the other side slides with the other rotating rod 31, while the dust plug 20 is fixed in the middle of the "U"-shaped structure. In this way, when the two rotating rods 31 rotate synchronously, the dust plug 20 can be moved through the "U"-shaped telescopic rod 32.

[0082] The dustproof device provided in the above embodiments operates on the following principle:

[0083] In the initial state, the connection port 12 of the connector 10 is connected to other connecting parts. At this time, the dust plug 20 is in a misaligned position and freely overlaps the connector 10 or other connecting parts. The end of the limiting rod abuts against the limiting surface 511. The first torsion spring is in an elastic charging state, and the elastic reset member 40 is also in an elastic charging state.

[0084] After the connection port 12 of connector 10 is separated from other connecting components, the rotating rod 31 rotates counterclockwise under the drive of the first torsion spring. During this process, the end of the limiting rod moves along the limiting surface 511, keeping the telescopic rod 32 in the extended position. When the rotating rod 31 rotates counterclockwise to the horizontal position, the dust plug 20 is directly opposite the connection port 12. At this time, the limiting rod moves to the limiting groove 53, and the telescopic rod 32 moves from the extended position to the retracted position under the drive of the elastic reset member 40, so that the dust plug 20 completely covers the connection port 12, and the conical plug 22 is embedded in the connection port 12.

[0085] See Figure 3 When it is necessary to reconnect other components, pull the telescopic rod 32 axially outward to remove the conical plug 22 from the connection port 12 and remove the end of the limiting rod from the limiting groove 53. Then rotate the telescopic rod 32 upward or downward to displace the dust plug 20 from the connection port 12 and the limiting rod from the limiting groove 53. After the connection port 12 of the connector 10 is connected and engaged with other components, release the telescopic rod 32 to allow the dust plug 20 to freely overlap the connector 10 or other connecting components.

[0086] On the other hand, this embodiment of the invention also provides a photovoltaic connector, see [link to relevant documentation]. Figure 4 It includes a positive connector 60 and a negative connector 70.

[0087] It should be understood that the positive connector 60 and negative connector 70 of the photovoltaic connector are both existing conventional technologies, and their specific structures will not be described here. Only the dustproof-related structures will be described below.

[0088] For example, positive connector 60 includes a positive connection terminal and a positive dustproof structure, and negative connector 70 includes a negative connection terminal and a negative dustproof structure.

[0089] In this embodiment, the positive electrode dustproof structure and / or the negative electrode dustproof structure is the dustproof device of any of the above embodiments. It can be understood here that either or both of the positive electrode dustproof structure and the negative electrode dustproof structure are the aforementioned dustproof devices.

[0090] See Figure 4 In a specific example, the positive electrode dustproof structure is the aforementioned dustproof device, while the negative electrode dustproof structure is another structure.

[0091] For example, see Figure 5 and Figure 6 The negative electrode dustproof structure 80 includes two dustproof covers 81, which are symmetrically arranged on both sides of the negative electrode connection end. Each dustproof cover 81 includes a covering part 811. Both covering parts 811 are semi-circular structures. The two covering parts 811 can be combined to form a complete circular cover plate, thereby covering the negative electrode connection end.

[0092] See Figure 5 and Figure 6 Each of the two cover portions 811 is provided with an extension portion 812, which is located at the center of the rounded edge of the cover portion 811 and is an elongated plate-like structure extending away from the cover portion 811. Furthermore, the side of the extension portion 812 near the cover portion 811 is hinged to the negative connector 70, so that the cover portion 811 can be flipped open or cover the negative connection end.

[0093] Furthermore, to ensure that the cover 811 can be flipped to fully fit the negative terminal, the hinge point between the extension 812 and the negative connector 70 should extend at least beyond the negative terminal. For example, see... Figure 6 A fixing block 82 is provided on the negative connector 70 at a position relative to each extension 812. The end of the fixing block 82 extends outward beyond the negative connection end, and the extension 812 and the part of the fixing block 82 that extends beyond the negative connection end are hinged by a pin.

[0094] Further, see Figure 6 A second torsion spring 83 is also provided on the pin. When the cover part 811 covers the negative terminal connection, the second torsion spring 83 is in its original state, that is, no elastic deformation occurs. In this way, the second torsion spring 83 can realize the automatic reset of the cover part 811, improving the convenience of operation.

[0095] In this embodiment, a traction component is provided on the side of the extension 812 away from the cover 811. The traction component is used to drive the extension 812 to rotate around the hinge, so as to cause the cover 811 to flip over to cover the negative terminal or move away from the negative terminal.

[0096] join Figure 5 The traction assembly includes a pull rod 85 and a connecting rod 84. The pull rod 85 is slidably mounted on the negative connector 70. For example, the negative connector 70 has a protrusion with a sliding hole, and the pull rod 85 slides within the sliding hole. One end of the connecting rod 84 is hinged to the pull rod 85, and the other end is hinged to the side of the extension 812 away from the cover portion 811, thus forming a movable connecting rod 84 between the pull rod 85 and the extension portion 812.

[0097] For the traction component based on the above structural design, please refer to... Figure 1 Pulling the lever 85 will pull the extension 812 via the connecting rod 84, causing the extension 812 to rotate around the pin, thereby rotating the cover 811 to open the negative terminal connection. When the lever 85 is released, the second torsion spring 83 can drive the cover 811 to return to its original position.

[0098] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0099] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A dustproof device for a connector (10), the connector (10) comprising a connector body (11) and a connection port (12), characterized in that, The dustproof device includes: Dust plug (20); The drive mechanism (30) includes a rotating rod (31) pivotally connected to the connector body (11) and a telescopic rod (32) slidably engaged with the rotating rod (31), wherein the dust plug (20) is fixed to the telescopic rod (32); An elastic reset member (40) is connected between the rotating rod (31) and the telescopic rod (32) to drive the telescopic rod (32) from the extended position to the retracted position.

2. The dustproof device according to claim 1, characterized in that, The dustproof device also includes a limiting mechanism (50), which includes a first limiting part (51) disposed on the connector body (11) and a second limiting part (52) connected to the telescopic rod (32). The second limiting part (52) is constrained by the first limiting part (51) when the dustproof plug (20) is misaligned with the connection port (12), and is released from the constraint when the dustproof plug (20) and the connection port (12) are aligned. The constraint is used to limit the telescopic rod (32) to the extended position of the rotating rod (31), so that the dust plug (20) can move with the rotating rod (31) to be directly opposite the connection port (12).

3. The dustproof device according to claim 2, characterized in that, The first limiting part (51) includes a limiting surface (511), which is an arc-shaped surface with its concave side facing the first end of the rotating rod (31). The second limiting part (52) includes a limiting rod connected to the telescopic rod (32). The first end of the rotating rod (31) is pivotally connected to the connector body (11). When the dust plug (20) is misaligned with the port, the end of the limiting rod contacts the limiting surface (511) to limit the telescopic rod (32) to the extended position.

4. The dustproof device according to claim 3, characterized in that, The first limiting part (51) includes two limiting surfaces (511) which are symmetrically arranged; the limiting mechanism (50) also includes a limiting groove (53) connected to one end of the two limiting surfaces (511) that are close to each other, and when the end of the limiting rod is facing the limiting groove (53), the dust plug (20) and the connecting port (12) are facing each other. The limiting groove (53) is recessed relative to the limiting surface (511) toward the first end of the rotating rod (31), and the depth of the recess is equal to or greater than the distance between the extended position and the retracted position on the rotating rod (31).

5. The dustproof device according to claim 4, characterized in that, The first limiting part (51) includes two arc-shaped limiting blocks arranged symmetrically, and the outer arc surfaces of the two limiting blocks constitute two limiting surfaces (511); The two limiting blocks have a "V" shaped groove formed at their close ends, and the "V" shaped groove constitutes the limiting groove (53).

6. The dustproof device according to claim 1, characterized in that, A first torsion spring is provided at the connection between the first end of the rotating rod (31) and the connector body (11); When the dust plug (20) is facing the connection port (12), the first torsion spring is in its original state.

7. A photovoltaic connector, characterized in that, include: A positive connector (60) includes a positive connection end and a positive dustproof structure; A negative connector (70) includes a negative connection end and a negative dustproof structure (80); Wherein, the positive electrode dustproof structure and / or the negative electrode dustproof structure (80) are the dustproof devices according to any one of claims 1-6.

8. The photovoltaic connector according to claim 7, characterized in that, The positive electrode dustproof structure is the dustproof device according to any one of claims 1-6; The negative electrode dustproof structure (80) includes two dustproof covers (81) symmetrically arranged on both sides of the negative electrode connection end; each dustproof cover (81) includes a covering part (811) and an extension part (812); the covering parts (811) of the two dustproof covers (81) are configured to cover the negative electrode connection end in combination; the side of the extension part (812) of the two dustproof covers (81) close to the covering part (811) is hinged to the negative electrode connector (70), and the side away from the covering part (811) is connected to a traction component; The traction assembly is configured to drive the extension (812) to rotate about the hinge, so as to cause the cover (811) to flip over to cover the negative terminal or flip over to open from the negative terminal.

9. The photovoltaic connector according to claim 8, characterized in that, The traction assembly includes a pull rod (85) and a connecting rod (84); The pull rod (85) is slidably disposed on the negative connector (70); One end of the connecting rod (84) is hinged to the pull rod (85), and the other end is hinged to the side of the extension (812) away from the cover (811).

10. The photovoltaic connector according to claim 8 or 9, characterized in that, A second torsion spring (83) is provided at the hinge point between the extension (812) and the negative connector (70); When the covering part (811) covers the negative terminal, the second torsion spring (83) is in its original state.

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