Crown spring terminal for photovoltaic connector

Abstract

The utility model relates to the technical field of connector parts, and discloses a crown spring terminal for a photovoltaic connector, which comprises a female terminal, a male terminal and a crown spring, the female terminal comprises a first end and a second end, the first end is provided with a clamping crown end, the inner wall of the female terminal is connected with the outer wall of the crown spring, and the outer wall of the crown spring is connected with the male terminal. The male terminal comprises a third end and a fourth end, and the third end is inserted into a first end hole in the first end and is in contact with the crown spring; the crown spring is embedded in the first end; according to the photovoltaic connector, the reinforcing convex hulls are additionally arranged on the inner contact surfaces of the crown springs, so that the resistance and control strength is increased in the process of plugging and unplugging the male terminal and the female terminal, and the stress buffer is reduced, thereby stabilizing the junction contact resistance and prolonging the overall service life of the photovoltaic connector.

Description

Technical Field

[0001] The utility model relates to the field of connector component technology processing, specifically, in particular to a crown spring terminal for a photovoltaic connector. Background Art

[0002] Photovoltaic connectors, also commonly known as terminal blocks or quick connectors, are key parts for interconnecting components such as modules, combiner boxes, controllers and inverters in photovoltaic power generation systems.

[0003] An electrical connector is a device that realizes the function of electrical connection. The electrical connector includes a connector terminal and two injection-molded insulating material bodies. The connector terminal includes a male terminal and a female terminal. The connecting end of the female terminal is generally cylindrical, and the connecting end of the male terminal is pin-shaped. The female terminal is pre-buried in one of the bodies, and the male terminal is connected to the other body. The conductive contact is realized by inserting the connecting end of the male terminal into the connecting end of the female terminal, and the current or signal is transmitted.

[0004] In current life, crowns are made of high-quality raw materials and special electroplating methods. This material and electroplating method are mastered by foreign manufacturers. The price is high, the cycle is long, and it is impossible to stably output high-quality products to provide users. When the crown spring is installed into the connecting end of the female terminal, the opening of the female terminal needs to be closed. The terminal lacks concave and convex parts, which reduces the tension when connected to the connector. In the case of large temperature differences, the connection will be unstable, resulting in a short service life of the connector. Utility Model Content

[0005] In order to solve the defects existing in the existing technology, the utility model provides a crown spring terminal for a photovoltaic connector.

[0006] The utility model provides a technical document, a crown spring terminal for a photovoltaic connector, comprising a female terminal, a male terminal and a crown spring, the female terminal comprising a first end and a second end, the first end being provided with a clamping crown end, the inner wall of the female terminal being connected to the outer wall of the crown spring, the male terminal comprising a third end and a fourth end, the third end being inserted into a first end hole on the first end and contacting with the crown spring; the crown spring is embedded in the first end.

[0007] Preferably, the second end is configured as a rivet wire structure, and the fourth end is configured as a rivet wire structure.

[0008] Preferably, the crown spring is cylindrical and is coaxially arranged with the connecting end of the female terminal, and the cross-sectional dimension of the crown spring changes uniformly along its axial direction.

[0009] Preferably, the crown spring comprises a first ring, a second ring and a plurality of spring leaves connecting the two rings, the plurality of spring leaves are arranged in a ring array with the axes of the two rings as the central axis, and the middle parts of the plurality of spring leaves are bent inwardly toward the axis direction of the two rings.

[0010] Preferably, a plurality of grooves are spaced apart on the sides of the two rings facing away from the plurality of spring leaves, and a plurality of convex bumps are arranged in the plurality of grooves.

[0011] Preferably, the height of the plurality of convex humps is greater than the thickness of the plurality of reed leaves.

[0012] Preferably, the crown spring further comprises at least one heat dissipation portion, and the heat dissipation portion is cooperatively connected to the connector.

[0013] Preferably, the crown spring is provided with an opening along the axial direction of the crown spring, the crown spring axis is provided in the first end, and a plurality of the spring leaves are spaced apart from each other.

[0014] Preferably, a plurality of protrusions are arranged on the outer wall of the third end.

[0015] Compared with the beneficial effects of the prior art, the utility model provides a reinforcing convex bump on the contact surface inside the crown spring, thereby increasing the anti-control strength of the male terminal and the female terminal during the plugging and unplugging process and reducing stress buffering. This stabilizes the contact impedance and extends the overall life of the photovoltaic connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the crown spring structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the crown spring of the utility model;

[0018] Figure 3 The overall structure of the photovoltaic connector of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 4 The overall structure of the photovoltaic connector of the utility model is shown in FIG. Figure 2 .

[0020] Markings: first ring 1, second ring 2, multiple spring leaves 3, multiple convex bumps 4, female terminal 53, male terminal 63, crown spring 7, first end 51, second end 52, third end 61, fourth end 62. DETAILED DESCRIPTION

[0021] It should be noted that the above-mentioned technical features are further combined with each other to form various embodiments not listed above, which are all deemed to be within the scope of the present utility model specification; and, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should fall within the scope of protection of the claims attached to the present utility model.

[0022] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by technicians in the technical field of the utility model. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the utility model.

[0025] The utility model is described in detail below in conjunction with the accompanying drawings.

[0026] like Figure 1-Figure 4 An embodiment shown: a crown spring 7 terminal for a photovoltaic connector, comprising a female terminal 53, a male terminal 63 and a crown spring 7, the female terminal 53 comprising a first end 51 and a second end 52, the first end 51 being provided with a clamping crown end, the inner wall of the female terminal 53 being connected to the outer wall of the crown spring 7, the male terminal 63 comprising a third end 61 and a fourth end 62, the third end 61 being inserted into the first end 51 hole on the first end 51 and contacting the crown spring 7; the crown spring 7 is embedded in the first end 51.

[0027] It should be noted that when the male terminal 63 is inserted into the female terminal 53, it first contacts the crown spring 7 and is connected to the female terminal 53 through the crown spring 7. At the same time, the use environment of this photovoltaic connector is harsh. Under the premise that the temperature difference between day and night varies from 40 to 100 degrees, the connector needs to maintain a stable contact impedance. Reinforcing convex tires are added to the contact surface of the crown spring 7. The mechanical structure is used to enhance the control strength of each contact shoulder and reduce stress buffering. Thereby stabilizing the contact impedance and extending the overall life of the photovoltaic connector.

[0028] Preferably, the second end 52 is configured as a rivet wire structure, and the fourth end 62 is configured as a rivet wire structure.

[0029] It should be noted that the rivet wire structures arranged on the second end and the fourth end are the same.

[0030] Preferably, the crown spring 7 is cylindrical and is coaxially arranged with the connecting end of the female terminal 53 , and the cross-sectional dimensions of the crown spring 7 vary uniformly along its axial direction.

[0031] It should be noted that the diameter of the crown spring 7 gradually decreases from both ends to the middle. In other embodiments, the diameter of the crown spring 7 may also gradually decrease from one end to the other end, or gradually increase from both ends to the middle, etc.; the crown spring 7 is coaxially arranged with the connecting end of the female terminal 53, and the outer diameters of the two ends of the crown spring 7 are equal to the inner diameter of the connecting end of the female terminal 53.

[0032] Preferably, the crown spring 7 includes a first ring 1, a second ring 2 and a plurality of spring leaves 3 connecting the two rings, the plurality of spring leaves are arranged in a ring array with the axes of the two rings as the central axis, and the middle parts of the plurality of spring leaves are bent inwardly toward the axis direction of the two rings.

[0033] It should be noted that a cylindrical space is formed between the two rings, and a number of reeds are arranged at intervals along the periphery of the space. One end of each reed is connected to one ring, and the other end is connected to the other ring. The two rings and the number of reeds together form a accommodating chamber, and the middle part of each reed is bent inward toward the axial direction of the ring, so that the male needle can be clamped and fixed.

[0034] Preferably, a plurality of grooves are spaced apart on the sides of the two rings facing away from the plurality of spring leaves, and a plurality of convex bumps 4 are arranged in the plurality of grooves.

[0035] It should be noted that reinforcing convex bumps are added on the contact surface. The mechanical structure is used to enhance the control strength of each contact shoulder and reduce stress buffering. This stabilizes the contact impedance and extends the overall life of the photovoltaic connector.

[0036] Preferably, the height of the plurality of convex humps is greater than the thickness of the plurality of reed leaves.

[0037] It should be noted that making the height of the bulge greater than the thickness of the spring sheet can ensure that the bulge plays a stabilizing limiting role on the crown spring 7, avoiding the crown spring 7 being pulled out of the female terminal 53 during the process of pulling the male terminal 63 out of the crown spring 7, further improving the connection strength between the crown spring 7 and the female terminal 53, and reducing stress buffering. Thereby stabilizing the contact impedance and extending the overall life of the photovoltaic connector.

[0038] The number of the spring leaves changes as the inner diameter of the crown spring 7 increases.

[0039] Preferably, the crown spring 7 further includes at least one heat dissipation portion, which is cooperatively connected with the connector and is made of a high-conductivity heat dissipation metal sheet or aluminum material.

[0040] It should be noted that the heat dissipation part is made of aluminum.

[0041] Preferably, the crown spring is provided with an opening along the axial direction of the crown spring, the crown spring axis is provided in the first end 51, and a plurality of the spring leaves are spaced apart from each other.

[0042] Preferably, a plurality of protrusions are arranged on the outer wall of the third end.

[0043] It should be noted that multiple protrusions enhance the firmness of the contact points, thereby increasing the overall tensile strength, reducing stress buffering during high-temperature aging, and thereby stabilizing the forward pressure and maintaining the temperature resistance of the contact impedance.

[0044] It should be noted that the above-mentioned technical features are further combined with each other to form various embodiments not listed above, which are all deemed to be within the scope of the present utility model specification; and, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should fall within the scope of protection of the claims attached to the present utility model.

Claims

1. A crown spring terminal for a photovoltaic connector, characterized in that: It includes a female terminal, a male terminal and a crown spring, the female terminal includes a first end and a second end, the first end is provided with a clamping crown end, the inner wall of the female terminal is connected to the outer wall of the crown spring, the male terminal includes a third end and a fourth end, the third end is inserted into the first end hole on the first end and contacts the crown spring; the crown spring is embedded in the first end; The second end is configured as a rivet wire structure, and the fourth end is configured as a rivet wire structure; The crown spring is cylindrical and is coaxially arranged with the connecting end of the female terminal, and the cross-sectional dimensions of the crown spring vary uniformly along its axial direction; The crown spring comprises a first ring, a second ring and a plurality of spring leaves connecting the two rings, the plurality of spring leaves are arranged in a ring array with the axes of the two rings as the central axis, and the middle parts of the plurality of spring leaves are bent inwardly toward the axis direction of the two rings; A plurality of grooves are arranged at intervals on the sides of the two rings facing away from the plurality of reeds, and a plurality of convex humps are arranged in the plurality of grooves; The height of the plurality of convex humps is greater than the thickness of the plurality of reed sheets.

2. A crown spring terminal for a photovoltaic connector according to claim 1, characterized in that: The crown spring further includes at least one heat dissipation portion, and the heat dissipation portion is cooperatively connected with the connector.

3. A crown spring terminal for a photovoltaic connector according to claim 1, characterized in that: The crown spring is provided with an opening along the axial direction of the crown spring, the crown spring shaft is provided in the first end, and a plurality of the spring leaves are arranged spaced apart from each other.

4. A crown spring terminal for a photovoltaic connector according to claim 1, characterized in that: A plurality of protrusions are arranged on the outer wall of the third end.

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