Buckle structure, connector male end, connector female end and photovoltaic connector

Abstract

The utility model provides a buckle structure, a connector male end, a connector female end and a photovoltaic connector, the buckle structure comprises a buckle body, the buckle body is a circular ring structure with two unconnected ends, one side of the buckle body is provided with a side guide part, and the other side is attached to the surface of the guide part to form the circular ring structure; a limiting groove is formed in the guide part, an elastic tongue is arranged on the side, attached to the guide part, of the buckle body and corresponds to the limiting groove, the elastic tongue inclines towards the interior of the buckle body, and the elastic tongue is in sliding fit with the limiting groove; the side surface of the buckle body is provided with an inner elastic sheet which is inclined and extends inwards, the lower end surface of the metal conductor is provided with a plurality of outer elastic sheets, and the outer elastic sheets are inclined outwards. According to the utility model, the technical problem that the pin of the connector is easy to loosen and come off in the prior art can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable connection, in particular to a snap-on structure, a connector male end, a connector female end and a photovoltaic connector. Background Art

[0002] Photovoltaic connectors are key components that interconnect various components within a photovoltaic power generation system, including photovoltaic panels, combiner boxes, controllers, and inverters. In a photovoltaic power plant, cables and photovoltaic connectors are required to aggregate the electrical energy from numerous photovoltaic panels and feed it into the inverter.

[0003] Photovoltaic connectors are exposed to extreme environments for long periods of time, requiring them to be adaptable to these harsh conditions. Conventional photovoltaic connectors are typically connected via plug-in connections, with the pins in the male and female connectors typically secured by an interference fit. Thrust rings are also used for this purpose. However, due to the fixed diameter of the retaining ring, excessive force during installation can easily cause the retaining ring to deform, leading to the pins becoming loose and potentially falling out. Utility Model Content

[0004] The purpose of the utility model is to provide a snap-fit structure, a connector male end, a connector female end and a photovoltaic connector, which can effectively solve the technical problem in the prior art that connector pins are prone to loosening and falling out.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A buckle structure includes a buckle body, wherein the buckle body is an annular structure with two ends not connected, one side of the buckle body has a guide portion, and the other side is in contact with the surface of the guide portion to form the annular structure;

[0007] Among them, a limiting groove is provided on the guide part, and a spring tongue is provided at a position corresponding to the limiting groove on one side of the buckle body that is in contact with the guide part. The spring tongue is inclined toward the inside of the buckle body and slides in cooperation with the limiting groove;

[0008] An inner spring piece extending inwardly and obliquely is provided on the side surface of the buckle body, and a plurality of outer spring pieces are provided on the lower end surface of the buckle body, and the outer spring pieces are inclined outwardly.

[0009] Furthermore, in some preferred implementation cases, there are three inner spring sheets, which are evenly arranged on the side of the buckle body.

[0010] Furthermore, in some preferred implementation cases, the inner spring piece is made by stamping.

[0011] Furthermore, in some preferred implementation cases, there are 6 external spring pieces, which are evenly arranged on the lower end surface of the buckle body.

[0012] Furthermore, in some preferred implementation cases, a groove is provided on the side where the buckle body is in contact with the guide portion, and the spring tongue is located in the groove, so that the side of the buckle body away from the guide portion is in contact with the guide portion.

[0013] The utility model also discloses a male end of a connector, including a male end insulating member, a male pin, a first clip, a first sealing ring and a first nut. The first clip is fixedly installed in the male end insulating member, the male pin is installed in the male end insulating member and passes through the first clip. The inner spring piece on the first clip is engaged with the metal conductor on the male pin to realize axial positioning of the male pin. A plurality of first bevel teeth are provided at the end of the male end insulating member, the first sealing ring is located at the first bevel teeth, and the outer wall of the first bevel teeth is in contact with the first nut. After the first nut is threadedly connected to the male end insulating member, the first nut drives the first bevel teeth to move toward the first sealing ring. A card slot is provided on the male end insulating member, and the first clip is the above-mentioned card structure.

[0014] Furthermore, in some preferred implementation cases, a first inclined surface is provided on the first nut near the first oblique tooth.

[0015] The utility model also discloses a female end of a connector, comprising a second nut, a second sealing ring, a second buckle, a female pin, a crown spring and a female end insulating member, wherein the second buckle is the above-mentioned buckle structure;

[0016] The female end insulating member is provided with a locking arm for cooperating with the card slot provided on the male end insulating member of the connector. The crown spring is installed in the female pin. The second clip is fixedly installed in the female end insulating member. The female pin is installed in the female end insulating member and passes through the second clip. The inner spring piece on the second clip contacts the metal conductor on the female pin to realize axial positioning of the female pin. A plurality of second bevel teeth are provided at the end of the female end insulating member. The second sealing ring is located at the second bevel teeth, and the outer wall of the second bevel teeth contacts the second nut. After the second nut is threadedly connected to the female end insulating member, the second nut drives the second bevel teeth to move toward the second sealing ring.

[0017] Wherein, a second inclined surface is provided on the second nut near the second oblique tooth.

[0018] The utility model discloses a photovoltaic connector, which comprises a connector female end and a connector male end buckled with the connector female end.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention is mainly used for being installed in the male end and the female end of the connector in actual use to achieve the fixation of the pin. Since the snap body is a circular ring structure with two ends not connected, the snap body can be pressed according to needs so that the diameter of the circular ring structure formed by the snap body can be adjusted, which is convenient for installation in the male end and the female end of the connector. At the same time, since a limiting groove is provided on the guide part and a spring tongue is provided on the snap body, the overall diameter of the snap can be reduced inwardly when the snap body is subjected to an axial external force, and the purpose of limiting the position is achieved at the same time, so as to control the reduction range; and the provided outer spring piece can ensure that the purpose of anti-slipping is achieved after installation in the male end or the female end of the connector. After the female pin or the male pin is passed through the snap body, the inner spring piece will contact the female pin or the male pin to achieve the anti-retraction effect on the male pin or the female pin. Under the action of the outer spring piece and the inner spring piece, the male pin or the female pin is fixed to avoid the male pin or the female pin from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the male end structure of the connector of the utility model.

[0023] Figure 2 This is a schematic diagram of the female end structure of the connector of the utility model.

[0024] Figure 3 This is a schematic diagram of the internal structure of the male end of the connector of the present utility model.

[0025] Figure 4 This is a schematic diagram of the internal structure of the female end of the connector of the utility model.

[0026] Figure 5 This is a schematic diagram of the overall structure of the photovoltaic connector of the present utility model.

[0027] Figure 6 It is a schematic diagram of the overall structure of the buckle structure of the utility model.

[0028] Figure 7 This is a schematic diagram of the female pin structure of the utility model.

[0029] Figure 8 This is a schematic diagram of the connection relationship between the female pin and the crown spring of the utility model.

[0030] Reference numerals:

[0031] 101-clip body, 102-guide part, 103-limiting groove, 104-spring tongue, 105-inner spring piece, 106-outer spring piece, 107-groove, 108-connector male end, 109-male end insulating member, 110-male pin, 111-first clip, 112-first sealing ring, 113-first nut, 114-first oblique tooth, 115-first inclined surface, 116-connector female end, 117-second nut, 118-second sealing ring, 119-second clip, 120-female pin, 121-crown spring, 122-female end insulating member, 123-second oblique tooth, 124-second oblique surface, 125-boss, 126-U-shaped part, 127-convex hull, 128-mounting groove, 129-O-ring, 130-clip, 131-locking arm. DETAILED DESCRIPTION

[0032] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0033] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention 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 cannot be understood as a limitation on the embodiments of the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0035] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0036] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0038] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] Example 1

[0040] This embodiment discloses a buckle structure, including a buckle body 101. The buckle body 101 is an annular structure with two ends not connected. One side of the buckle body 101 has a guide portion 102, and the other side is in contact with the surface of the guide portion 102 to form the annular structure.

[0041] The guide portion 102 is provided with a limiting groove 103, and a spring tongue 104 is provided at a position corresponding to the limiting groove 103 on the side where the buckle body 101 is in contact with the guide portion 102. The spring tongue 104 is inclined toward the inside of the buckle body 101 and slides in cooperation with the limiting groove 103.

[0042] An inner spring piece 105 extending inwardly and tilted is provided on the side of the buckle body 101 , and a plurality of outer spring pieces 106 are provided on the lower end surface of the buckle body 101 , and the outer spring pieces 106 tilt outwardly.

[0043] In actual use, the present invention is mainly used to be installed in the male end 108 and the female end of the connector to fix the pins (female pins and male pins). Since the buckle body 101 is a circular ring structure with unconnected ends, the buckle body 101 can be pressed according to needs so that the diameter of the circular ring structure formed by the buckle body 101 can be adjusted, which is convenient for installation in the male end 108 and the female end of the connector. At the same time, since the limiting groove 103 is provided on the guide part 102 and the spring tongue 104 is provided on the buckle body 101, when the buckle body 101 is subjected to the action of axial external force, the overall diameter of the buckle will shrink inwards, and at the same time The purpose of limiting is achieved at the same time, so as to control the shrinking range; and the provided external spring piece 106 can ensure that the purpose of preventing the male pin 120 or the female pin 110 from falling out is achieved after being installed at the male end 108 of the connector or the female end 116 of the connector. After the female pin 120 or the male pin 110 passes through the buckle body 101, the internal spring piece 105 will contact the female pin 120 or the male pin 110 to achieve the anti-retraction effect on the male pin 110 or the female pin 120. Under the action of the external spring piece 106 and the internal spring piece 105, the male pin 110 or the female pin 120 is fixed to prevent the male pin 110 or the female pin 120 from falling off.

[0044] Furthermore, there are three inner spring pieces 105 , which are evenly arranged on the side of the buckle body 101 , so that the inner spring pieces 105 can be evenly distributed on the side of the buckle body 101 , and the force is more uniform when applied.

[0045] In actual use, the inner spring piece 105 is made by stamping.

[0046] Furthermore, there are six external spring pieces 106 , which are evenly arranged on the lower end surface of the buckle body 101 , so that the force is more evenly distributed.

[0047] The side where the buckle body 101 and the guide part 102 meet is provided with a groove 107, and the spring tongue 104 is located in the groove 107, so that the side of the buckle body 101 away from the guide part 102 is in contact with the guide part 102. This can serve as a guide when adjusting the diameter.

[0048] Example 2

[0049] See Figures 1-8 This embodiment discloses a photovoltaic connector, including a connector female end 116 and a connector male end 108 that is engaged with the connector female end 116.

[0050] The structure of the connector male end 108 is as follows:

[0051] It includes a male insulator 109, a male pin 110, a first buckle 111, a first sealing ring 112 and a first nut 113. The first buckle 111 is fixedly installed in the male insulator 109. The male pin 110 is installed in the male insulator 109 and passes through the first buckle 111. The inner spring piece 105 on the first buckle 111 is in contact with the metal conductor on the male pin 110 to achieve axial positioning of the male pin 110. A plurality of first bevel teeth 114 are provided at the end of the male insulator 109. The first sealing ring 112 is located at the first bevel teeth 114, and the outer wall of the first bevel teeth 114 contacts the first nut 113. After the first nut 113 is threadedly connected to the male insulator 109, the first nut 113 drives the first bevel teeth 114 to move toward the first sealing ring 112. A card slot 130 is provided on the male insulator 109. The first buckle 111 is the card buckle structure described in Example 1.

[0052] Furthermore, a first inclined surface 115 is provided on the first nut 113 near the first oblique tooth 114 .

[0053] The structure of the connector female end 116 is as follows:

[0054] The female connector 116 includes a second nut 117, a second sealing ring 118, a second buckle 119, a female pin 120, a crown spring 121, and a female end insulating member 122. The second buckle 119 has the buckle structure described in Example 1.

[0055] The female end insulator 122 is provided with a locking arm 131 for cooperating with the slot 130 provided on the insulator of the male end 108 of the connector. The crown spring 121 is installed in the female pin 120, and the second clip 119 is fixedly installed in the female end insulator 122. The female pin 120 is installed in the female end insulator 122 and passes through the second clip 119. The inner spring piece 105 on the second clip 119 contacts the metal conductor on the female pin 120 to achieve axial positioning of the female pin 120. A plurality of second bevel teeth 123 are provided at the end of the female end insulator 122. The second sealing ring 118 is located at the second bevel teeth 123, and the outer wall of the second bevel teeth 123 contacts the second nut 117. After the second nut 117 is threadedly connected to the female end insulator 122, the second nut 117 drives the second bevel teeth 123 to move toward the second sealing ring 118.

[0056] Furthermore, a second inclined surface 124 is provided on the second nut 117 near the second inclined tooth 123 .

[0057] In actual use, three bosses 125 are provided inside the female pin 120 to limit the axial displacement of the crown spring 121. The crown spring 121 comprises a metal sheet that is surrounded by a cylindrical structure, forming a fully wrapped structure, thereby increasing the contact area.

[0058] After the crown spring 121 is installed inside the female pin 120, the female pin 120 is manually closed to reduce the outer diameter, which can effectively prevent the crown spring 121 from falling out.

[0059] The tail of the male pin 110 and the female pin 120 are both provided with a U-shaped portion 126, and the U-shaped portion 126 is provided with a chamfer, which serves as a guide when using a wire crimping pliers to crimp the wire, thereby achieving a better crimping effect; a plurality of convex bumps 127 are provided on the side of the male pin 110 and the female pin 120, and the convex bumps 127 constitute the metal conductor.

[0060] In actual use, the outer spring piece 106 of the metal conductor is directly fitted into the inner cavity of the male end insulating member 109 and the female end insulating member 122 , so that the buckle body 101 will not be displaced.

[0061] In actual use, due to the provision of the first bevel teeth 114 and the second bevel teeth 123 , after the first bevel teeth 114 and the second bevel teeth 123 contact the first sealing ring 112 and the second sealing ring 118 , the tightness can be adjusted according to the diameter of the cable.

[0062] Furthermore, a mounting groove 128 is provided on the female end insulating member 122, and an O-ring 129 is provided in the mounting groove 128. After the female end insulating member 122 is connected to the male end insulating member 109, the stability of the overall structure of the connector can be improved under the action of the O-ring 129.

[0063] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A buckle structure, characterized in that: The buckle body comprises a buckle body, wherein the buckle body is an annular structure with two ends not connected, one side of the buckle body has a guide portion, and the other side is fitted with the surface of the guide portion to form the annular structure; Among them, a limiting groove is provided on the guide part, and a spring tongue is provided at a position corresponding to the limiting groove on one side of the buckle body that is in contact with the guide part. The spring tongue is inclined toward the inside of the buckle body and slides in cooperation with the limiting groove; An inner spring piece extending inwardly and obliquely is provided on the side of the buckle body, and a plurality of outer spring pieces are provided on the lower end surface of the metal conductor, and the outer spring pieces are inclined outwardly.

2. The buckle structure according to claim 1, characterized in that: There are three inner springs, which are evenly arranged on the side of the buckle body.

3. The buckle structure according to claim 2, characterized in that: The inner spring piece is made by stamping.

4. The buckle structure according to claim 1, characterized in that: There are 6 external spring pieces, which are evenly arranged on the lower end surface of the buckle body.

5. The buckle structure according to claim 1, characterized in that: A groove is provided on the side where the buckle body is in contact with the guide portion, and the spring tongue is located in the groove, so that the side of the buckle body away from the guide portion is in contact with the guide portion.

6. A connector male end, characterized in that: It includes a male end insulator, a male pin, a first clip, a first sealing ring and a first nut. The first clip is fixedly installed in the male end insulator, the male pin is installed in the male end insulator and passes through the first clip. The inner spring piece on the first clip is in contact with the metal conductor on the male pin to realize the axial positioning of the male pin. A plurality of first bevel teeth are provided at the end of the male end insulator. The first sealing ring is located at the first bevel teeth, and the outer wall of the first bevel teeth is in contact with the first nut. After the first nut is threadedly connected to the male end insulator, the first nut drives the first bevel teeth to move toward the first sealing ring. A card slot is provided on the male end insulator. The first clip is the card buckle structure described in any one of claims 1 to 5.

7. A connector male end according to claim 6, characterized in that: A first inclined surface is provided on the first nut near the first oblique tooth.

8. A female connector, characterized in that: It includes a second nut, a second sealing ring, a second clip, a female pin, a crown spring and a female end insulating part, the second clip is a clip structure according to any one of claims 1 to 5; the female end insulating part is provided with a locking arm for cooperating with a slot provided on the male end insulating part of the connector, the crown spring is installed in the female pin, the second clip is fixedly installed in the female end insulating part, the female pin is installed in the female end insulating part and passes through the second clip, and the inner spring piece on the second clip contacts the metal conductor on the female pin to realize axial positioning of the female pin, a plurality of second bevel teeth are provided at the end of the female end insulating part, the second sealing ring is located at the second bevel teeth, and the outer wall of the second bevel teeth contacts the second nut, and after the second nut is threadedly connected to the female end insulating part, the second nut drives the second bevel teeth to move toward the second sealing ring.

9. The connector female end according to claim 8, characterized in that: A second inclined surface is provided on the second nut near the second oblique teeth.

10. A photovoltaic connector, characterized in that: It includes a connector female end and a connector male end that is interlocked with the connector female end, the connector male end is the connector male end described in claim 6 or 7, and the connector female end is the connector male end described in claim 8 or 9.

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