Photovoltaic copper-aluminum connector limiting ring assembly inspection device

Abstract

The utility model discloses a photovoltaic copper-aluminum connector limiting ring assembly inspection device, which comprises an insertion cavity insertion pipe, the tail end of the insertion cavity insertion pipe is connected with an installation cavity insertion pipe, the diameter of the installation cavity insertion pipe is larger than the inner diameter of an insertion cavity, the installation cavity insertion pipe is provided with an inner fin clamping groove, and the inner fin clamping groove is provided with a clamping groove. The inner fin clamping grooves are used for being connected with inner fins of the limiting ring in a clamped mode, and the installation cavity insertion pipe is sleeved with an inner fin unlocking sleeve. According to the utility model, whether the limiting ring is installed in place can be detected, the product quality is ensured, and the assembly efficiency of the photovoltaic copper-aluminum connector is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic copper-aluminum connectors, and particularly relates to a special assembly inspection device for a limiting ring of a photovoltaic copper-aluminum connector, which realizes the inspection of whether the limiting ring is assembled to the limiting ring installation position of the plastic housing of the photovoltaic copper-aluminum connector. Background Art

[0002] A new type of special copper-aluminum connector is used in the photovoltaic market. The MC4 male-female plug-in structure is designed on the copper-aluminum connector, and it can also be plugged in with the commonly used MC4 connectors in the market to realize the connection of copper wires and aluminum wires. In this way, the copper wire at one end can be changed to an aluminum wire, reducing the production cost. However, this method requires a separately designed stainless steel metal limiting ring.

[0003] For example, the direct plug-in copper-aluminum connector disclosed in CN111952755A includes a plastic housing. The plastic housing sequentially has an insertion cavity and an installation cavity. A connector is installed in the installation cavity, and the shape of the installation cavity corresponds to the shape of the connector. The copper pipe of the connector needs to extend into the insertion cavity. To fix the position of the connector, a limiting ring is sleeved outside the copper pipe. The limiting ring has outer fins and inner fins, and the directions of the inner fins and the outer fins are opposite. There is an inner annular groove on the copper pipe. At the inner annular groove, the installation cavity of the plastic housing has an outer annular groove. The inner fins are stuck in the inner annular groove, and the outer fins are stuck in the outer annular groove. The copper-aluminum connector cooperates with the inner annular groove through the limiting ring to prevent loosening, and cooperates with the outer annular groove position inside the plastic housing to effectively prevent the internal loosening of the copper-aluminum connector. If the connector is loose, it will affect the insertion depth of the connector. After the two ends of the plastic housing are plugged in, it may cause a reduction in the contact area between the two connectors, resulting in an increase in resistance and posing a safety hazard.

[0004] As can be seen from the above content, the inner diameter of the outer annular groove needs to be greater than the inner diameter of the insertion cavity, the outer diameter of the outer fins needs to be less than or equal to the inner diameter of the outer annular groove and greater than the inner diameter of the insertion cavity, the inner diameter of the inner annular groove needs to be less than the outer diameter of the copper pipe, the inner diameter of the inner fins needs to be greater than or equal to the inner diameter of the inner annular groove and less than the outer diameter of the copper pipe, the maximum diameter of the outer fins is greater than the diameter of the limiting ring body, the minimum diameter of the inner fins is less than the diameter of the limiting ring body, the opening of the outer fins needs to face the tail end of the plastic housing, and the opening of the inner fins faces the head of the plastic housing to realize the positioning of the connector through the limiting ring.

[0005] After the limiting ring reaches the assembly position, the outer diameter of the limiting ring needs to be expanded so that the limiting ring is stuck in the designated position of the installation cavity (the outer fins are stuck in the outer annular groove) to position the limiting ring. Otherwise, the limiting ring will shift and skew, affecting the installation of subsequent processes. Currently, there is a lack of relevant inspection tools for whether the limiting ring is installed in place, resulting in a slow assembly efficiency of the photovoltaic copper-aluminum connector. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a photovoltaic copper-aluminum connector limit ring assembly inspection device, which can inspect whether the limit ring is assembled to the limit ring installation position of the photovoltaic copper-aluminum connector plastic shell, thereby improving the assembly efficiency of the photovoltaic copper-aluminum connector.

[0007] In order to achieve the above technical purpose, the technical solution of the utility model is:

[0008] A photovoltaic copper-aluminum connector limit ring assembly inspection device includes an insertion cavity insert tube, the rear end of the insertion cavity insert tube is connected to an installation cavity insert tube, the diameter of the installation cavity insert tube is larger than the inner diameter of the insertion cavity, the insertion cavity insert tube is used to insert into the insertion cavity of the photovoltaic copper-aluminum connector plastic shell, the installation cavity insert tube is used to insert into the installation cavity of the photovoltaic copper-aluminum connector plastic shell, the installation cavity insert tube is provided with an inner fin slot, the inner fin slot is used to clamp the inner fin of the limit ring, the installation cavity insert tube is provided with an inner fin unlocking sleeve on the outside, and the inner fin unlocking sleeve slides back and forth along the installation cavity insert tube.

[0009] If the installation cavity insert is stuck by the inner fin of the limit ring and the installation cavity insert cannot be withdrawn from the plastic shell, the limit ring is assembled in place, and the inner fin unlocking sleeve needs to be pushed to the head of the installation cavity insert, and the inner fin unlocking sleeve can open the inner fin of the limit ring, and then the installation cavity insert can be withdrawn. Otherwise, the limit ring is not assembled in place and needs to be reassembled.

[0010] Specifically, the insert tube is inserted into the plastic shell in the direction in which the limit ring is installed into the plastic shell of the copper-aluminum connector, and the insertion cavity insert tube enters the insertion cavity in the plastic shell. When the installation cavity insert tube cannot move further, it indicates that the head end of the installation cavity insert tube has moved to the bottom of the installation cavity; in the process of inserting the installation cavity insert tube into the plastic shell, the inner fins of the limit ring in the plastic shell will be stuck in the inner fin grooves of the installation cavity insert tube; because the inner fins of the limit ring will abut against the inner fin grooves of the installation cavity insert tube, the outer fins of the limit ring will abut against the fin grooves in the plastic shell (installation cavity), which will cause the installation cavity insert tube to be unable to withdraw from the plastic shell; when the installation cavity insert tube cannot withdraw from the plastic shell, it indicates that the limit ring has been assembled in place and meets the assembly requirements; otherwise, the assembly of the limit ring does not meet the requirements. If the plastic shell can be directly pulled out or the limit ring can be taken out together, the limit ring is not assembled in place and needs to be reassembled.

[0011] When the installation cavity tube needs to be withdrawn from the plastic shell, the inner fin unlocking sleeve is pushed to slide along the installation cavity tube toward the limiting ring, and the inner fin unlocking sleeve will push the inner fin out of the inner fin slot to unlock the inner fin of the limiting ring, thereby realizing the separation of the installation cavity tube from the plastic shell.

[0012] The outer diameter of the insertion cavity cannula is equal to the outer diameter of the copper tube of the joint.

[0013] The outer diameter of the installation cavity insert is equal to the outer diameter of the aluminum tube of the joint.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. During the inspection process, the assembly inspection device directly inserts the insertion tube without changing the external shape of the limit ring, ensuring the product quality and performance.

[0016] 2. The assembly inspection device is easy to operate. The operator only needs to insert the insertion tube to check whether the limit ring is assembled in place, and push the inner fin to unlock the sleeve to withdraw the insertion tube from the plastic housing.

[0017] 3. This device can realize the inspection of the limit ring for both male and female connectors, with strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0019] Figure 1 It is a schematic structural diagram of the finished product of the limit ring assembled on the male-end plastic housing.

[0020] Figure 2 It is a schematic structural diagram of the limit ring assembly inspection device.

[0021] Figure 3 It is a schematic diagram of the limit ring inspection state. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] As Figure 1 shown, the male end of the photovoltaic copper-aluminum connector includes a plastic housing 3, a limit ring, and a connector. There is an installation cavity 5 and an insertion cavity 6 inside the plastic housing 3. The insertion cavity 6 includes a limit ring placement cavity 7, and the limit ring placement cavity 7 is provided with an outer annular groove 8. The outer diameter of the limit ring 9 is equal to the inner diameter of the limit ring placement cavity 7. The limit ring 9 includes an inner fin and an outer fin. The outer fin is arranged on the outside of the limit ring, and the opening of the outer fin faces the tail end of the limit ring. The inner fin is arranged on the inside of the limit ring, and the opening of the inner fin faces the head end of the limit ring. During use, the limit ring is located in the limit ring placement cavity 7, the outer fin is stuck in the outer annular groove 8, and the inner fin is stuck in the annular groove on the connector to limit the connector.

[0023] As Figure 2 shown, a limit ring assembly inspection device for a photovoltaic copper-aluminum connector includes an installation cavity insertion tube 1. The outer diameter of the installation cavity insertion tube is equal to the outer diameter of the aluminum tube of the connector. The head end of the installation cavity insertion tube 1 is connected with an insertion cavity insertion tube, and the outer diameter of the insertion cavity insertion tube is equal to the outer diameter of the copper tube of the connector. The outer diameter of the connector copper tube is smaller than the outer diameter of the connector aluminum tube. Outside the installation cavity insertion tube 1, an inner fin clamping groove 11 is arranged at the head of the installation cavity insertion tube 1 for clamping the inner fin of the limit ring.

[0024] The installation cavity intubation tube 1 is sleeved with an inner fin unlocking sleeve 2. The inner fin unlocking sleeve 2 slides reciprocally along the installation cavity intubation tube 1, and the outer diameter of the inner fin unlocking sleeve 2 is smaller than the inner diameter of the limit ring placement cavity 7.

[0025] As Figure 3 shown, during use, the installation cavity intubation tube 1 is inserted into the installation cavity 5 of the male end of the copper-aluminum connector, and the installation cavity intubation tube 1 is pushed into the plastic housing so that the insertion cavity intubation tube extends into the insertion cavity of the plastic housing until the installation cavity intubation tube 1 is stuck by the inner fins of the limit ring 9. At this time, when the installation cavity intubation tube 1 is pulled outwards, if the installation cavity intubation tube 1 can be pulled out or the installation cavity intubation tube 1 pulls out the limit ring 9 together, it is determined that the assembly of the limit ring 9 is unqualified and needs to be reassembled.

[0026] If the installation cavity intubation tube 1 cannot be pulled out, it is determined that the assembly of the limit ring 9 is qualified. Push the inner fin unlocking sleeve 2 to the position of the inner fins of the limit ring 9, and the inner fin unlocking sleeve 2 will expand the inner fins of the limit ring 9 to release the limiting effect of the inner fins of the limit ring 9, and then the installation cavity intubation tube 1 can be pulled out.

[0027] The above embodiments do not limit the present invention in any way. All technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A limit ring assembly inspection device for a photovoltaic copper-aluminum connector, characterized in that: It includes an insertion cavity cannula, and the tail end of the insertion cavity cannula is connected with an installation cavity cannula. The installation cavity cannula is provided with an inner fin card slot, and the inner fin card slot is used for clamping the inner fins of a limiting ring. An inner fin unlocking sleeve is sleeved outside the installation cavity cannula.

2. The inspection device for assembling the limiting ring of a photovoltaic copper-aluminum connector according to claim 1, characterized in that: The inner fin unlocking sleeve reciprocally slides along the installation cavity cannula.

3. The assembling and inspection device for the limiting ring of a photovoltaic copper-aluminum connector according to claim 1, wherein: The outer diameter of the insertion cavity cannula is equal to the outer diameter of the copper pipe of the joint.

4. A limiting ring assembly inspection device for a photovoltaic copper-aluminum connector according to claim 1, characterized in that: The outer diameter of the installation cavity cannula is equal to the outer diameter of the aluminum pipe of the joint.

5. The inspection device for assembling a limiting ring of a photovoltaic copper-aluminum connector according to claim 1, characterized in that: The diameter of the installation cavity cannula is larger than the inner diameter of the insertion cavity.

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