BOARD END CONNECTOR FOR FLEXIBLE CONNECTION WITH PCB

Abstract

The present disclosure provides a board-end connector for flexible connection with a PCB. According to the present disclosure, a board-end connector is provided. The board-end connector comprises: an insulating housing with openings at both ends; a locknut, to be used for mated installation with a first end of the insulating housing; and a cover, to be used for mated installation with a second end of the insulating housing by insertion, wherein the cover is configured to receive a first terminal having a soldering tail end and, the cover and the second end of the insulating housing, after the mated installation, are capable of sliding axially and being limited within a predetermined spatial range.

Claims

1. A board-end connector comprising: an insulating housing defining openings at a first end and a second end; a locknut configured to be used for mated installation with the first end of the insulating housing; and a cover configured to be used for mated installation with the second end of the insulating housing by insertion, wherein the cover is configured to receive a first terminal comprising a soldering tail end, and wherein the cover and the second end of the insulating housing, after the mated installation, are configured to slide axially limited within a predetermined spatial range.

2. The board-end connector according to claim 1, wherein the second end of the insulating housing is provided with an annular boss, wherein a first limiting structure is disposed at an inner side of the cover and a mating second limiting structure is disposed at an outer side of the annular boss, and wherein, after the cover is sleeved and mounted onto the annular boss, a physical interference of the first limiting structure and the second limiting structure prevents the cover from disengaging from the annular boss.

3. The board-end connector according to claim 2, wherein the first limiting structure is configured to not be in contact with the second limiting structure when a bottom of the cover is in contact with a top of the annular boss.

4. The board-end connector according to claim 2, wherein the first limiting structure comprises a limiting protrusion at the inner side of the cover and the second limiting structure comprises a limiting recess at the outer side of the annular boss, and wherein, after the cover is sleeved and mounted onto the annular boss, the limiting recess is configured to receive the limiting protrusion and enable an axial movement of the limiting protrusion within the limiting recess.

5. The board-end connector according to claim 2, wherein a first guide structure is disposed on the annular boss and a mating second guide structure is disposed on the cover, and wherein mating of the first guide structure and the second guide structure is configured to enable axial relative sliding between the cover and the insulating housing with a restriction on circumferential relative rotation therebetween.

6. The board-end connector according to claim 5, wherein the first guide structure comprises a guiding slot, and wherein the second guide structure comprises a guiding post.

7. The board-end connector according to claim 1, wherein the soldering tail end of the first terminal is flat shaped, wherein the soldering tail end of the first terminal is larger in width than an insertion body of the first terminal, wherein the cover is provided with a terminal socket in a middle of the cover, and wherein the terminal socket is provided with a pin guiding and limiting structure therein configured to assist in installation guide of the insertion body of the first terminal and to limit an insertion depth of the soldering tail end of the first terminal.

8. The board-end connector according to claim 7, wherein a first ledge structure is provided in the terminal socket and a second ledge structure is provided at the soldering tail end of the first terminal, and wherein the first ledge structure and the second ledge structure are configured to be mated with each other to retain the first terminal.

9. The board-end connector according to claim 1, wherein the board-end connector comprises a conductive sleeve configured to be mounted in the insulating housing, and wherein a first end of the conductive sleeve is configured to be used for mated connection with an insertion body of the first terminal and a second end of the conductive sleeve is configured to be used for connection with a terminal in a mating connector.

10. The board-end connector according to claim 9, wherein the conductive sleeve is provided with an elastic coupling member therein to establish a slidable electrical connection between an inner wall of the sleeve and the insertion body of the first terminal when inserted into the sleeve.

11. The board-end connector according to claim 10, wherein the elastic coupling member is one of a crown spring, a torsion spring, a wire spring, a claw, or a leaf spring.

12. The board-end connector according to claim 1, wherein the first end of the insulating housing corresponds to an end of the board-end connector to be inserted with a mating connector.

13. The board-end connector according to claim 1, wherein the insulating housing is configured to be positioned on a first side of a mounting panel and pass through a positioning hole in the mounting panel, and wherein the locknut is configured to lock the insulating housing to a second side of the mounting panel.

14. A photovoltaic inverting device, the device comprising: a device case; a printed circuit board (PCB); and a board-end connector comprising: an insulating housing defining openings at a first end and a second end; a locknut configured to be used for mated installation with the first end of the insulating housing; and a cover configured to be used for mated installation with the second end of the insulating housing by insertion, wherein the cover is configured to receive a first terminal comprising a soldering tail end, and wherein the cover and the second end of the insulating housing, after the mated installation, are configured to slide axially limited within a predetermined spatial range, wherein, the PCB is configured to be positioned inside the device case, and wherein the soldering tail end of the first terminal of the board-end connector is configured to be soldered onto the PCB and the insulating housing of the board-end connector is configured to be mounted onto a panel of the device case.

15. The device of claim 14, wherein the second end of the insulating housing is provided with an annular boss, wherein a first limiting structure is disposed at an inner side of the cover and a mating second limiting structure is disposed at an outer side of the annular boss, and wherein, after the cover is sleeved and mounted onto the annular boss, a physical interference of the first limiting structure and the second limiting structure prevents the cover from disengaging from the annular boss.

16. The device of claim 15, wherein the first limiting structure is configured to not be in contact with the second limiting structure when a bottom of the cover is in contact with a top of the annular boss.

17. The device of claim 14, wherein the soldering tail end of the first terminal is flat shaped, wherein the soldering tail end of the first terminal is larger in width than an insertion body of the first terminal, wherein the cover is provided with a terminal socket in a middle of the cover, and wherein the terminal socket is provided with a pin guiding and limiting structure therein configured to assist in installation guide of the insertion body of the first terminal and to limit an insertion depth of the soldering tail end of the first terminal.

18. The device of claim 14, wherein the board-end connector comprises a conductive sleeve configured to be mounted in the insulating housing, and wherein a first end of the conductive sleeve is configured to be used for mated connection with an insertion body of the first terminal and a second end of the conductive sleeve is configured to be used for connection with a terminal in a mating connector

19. The device of claim 14, wherein the first end of the insulating housing corresponds to an end of the board-end connector to be inserted with a mating connector.

20. The device of claim 14, wherein the insulating housing is configured to be positioned on a first side of a mounting panel and pass through a positioning hole in the mounting panel, and wherein the locknut is configured to lock the insulating housing to a second side of the mounting panel.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 shows a schematic exploded view of a board-end connector according to an example of the present disclosure.

[0023] FIG. 2 shows a schematic view of a cover according to an example of the present disclosure.

[0024] FIG. 3 shows a schematic view of an assembly of cover and pin terminal according to an example of the present disclosure.

[0025] FIG. 4 shows a cross-sectional view of an assembly of cover and pin terminal according to an example of the present disclosure.

[0026] FIG. 5 shows a cross-sectional view, taken along another direction, of an assembly of cover and pin terminal according to an example of the present disclosure.

[0027] FIG. 6 shows a cross-sectional view of an assembly of insulating housing and conductive sleeve of the board-end connector according to an example of the present disclosure.

[0028] FIG. 7A shows a schematic view of an assembly of cover and pin terminal and an assembly of insulating housing and conductive sleeve, with the guiding post structure illustrated, according to an example of the present disclosure.

[0029] FIG. 7B shows a schematic view, from another perspective, of the assembly of cover and pin terminal and the assembly of insulating housing and conductive sleeve, with the guiding slot structure illustrated, according to an example of the present disclosure.

[0030] FIG. 8 shows a cross-sectional view of the assembly of cover and pin terminal and the assembly of insulating housing and conductive sleeve in a mated installation state.

[0031] FIG. 9A and FIG. 9B show schematic views of mounting of the board-end connector according to an example of the present disclosure.

[0032] FIG. 10A and FIG. 10B show mounting of the board-end connector according to an example of the present disclosure, with different spacings between the PCB and the mounting panel.

[0033] Some of the reference numerals: [0034] 100 board-end connector; 1 locknut; 3 insulating housing; 4 conductive sleeve; 5 crown spring; 6 retaining ring; 7 cover; 71 terminal socket; 72 pin guiding and limiting structure; 75 stop ledge; 8 pin terminal; 81 soldering tail end; 82 insertion body; 85 stop ledge; 722 protrusion; 322 guiding slot; 32 annular boss; 73 first limiting structure; 35 second limiting structure; 735 limiting protrusion; 325 limiting recess.

DETAILED DESCRIPTION

[0035] In the following description, the present disclosure is described with reference to various examples. However, one skilled in the art will recognize that the various examples may be practiced without one or more of the specific details or with other alternative and/or additional methods, materials, or components. In other instances, well-known structures, materials, or operations have not been illustrated or described in detail so as not to obscure aspects of the various examples of the present disclosure. Likewise, for purposes of explanation, specific quantities, materials, and configurations are set forth in order to provide a thorough understanding of the examples of the present disclosure. However, the present disclosure may be practiced without the specific details. In addition, it should be understood that the examples shown in the drawings are illustrative representations and are not necessarily drawn to scale.

[0036] FIG. 1 shows a schematic exploded view of a board-end connector according to an example of the present disclosure. As shown in FIG. 1, a board-end connector 100 may be comprised of a locknut 1, a sealing washer 2, an insulating housing 3, a conductive sleeve 4, a crown spring 5, a retaining ring 6, a cover 7, and a pin terminal 8, wherein the board-end connector 100 refers to a connector which may be mounted to a panel. For example, as to a photovoltaic inverting device in a photovoltaic system, if the board-end connector 100 is to be mounted to the device case of the photovoltaic inverting device, a certain surface of the device case is to be the mounting panel for the board-end connector 100. In this sense, the board-end connector 100 may also be referred to as a device-end connector.

[0037] The pin terminal 8 has a soldering tail end to be soldered to a PCB. The pin terminal 8 may thus also be referred to as a soldering terminal. The other end of the pin terminal 8 may be inserted into the corresponding socket of the cover 7 to form a soldering terminal assembly. The relevant structure of such assembly will be described below in connection with FIGS. 2-5.

[0038] FIG. 2 shows a schematic view of the cover 7 according to an example of the present disclosure. FIG. 3 shows a schematic view of an assembly of the cover 7 and the pin terminal 8 according to an example of the present disclosure. FIG. 4 shows a cross-sectional view of an assembly of the cover 7 and the pin terminal 8 according to an example of the present disclosure. FIG. 5 shows a cross-sectional view, taken along another direction, of an assembly of the cover 7 and the pin terminal 8 according to an example of the present disclosure. The cross-sections of FIG. 4 and FIG. 5 are taken along different angular directions. As shown in FIGS. 3-5, the pin terminal 8 may be inserted from an end of the cover 7 into the corresponding socket of the cover. The soldering tail end 81 of the pin terminal 8 is flat shaped, and the soldering tail end 81 is larger in width than an insertion body 82 at the front of the pin terminal 8. The cover 7 is provided with a terminal socket 71 in the middle of the cover. The terminal socket 71 is provided with a pin guiding and limiting structure 72 therein, to assist in the installation guide of the insertion body 82 of the pin terminal 8, and to limit the insertion depth of the soldering tail end 81 of the pin terminal 8. As an example, the pin guiding and limiting structure 72 may be a limiting hole that gradually narrows along the axial direction as shown in FIG. 4. In addition, as shown in FIG. 5, a stop ledge 75 is provided in the terminal socket 71, and a stop ledge 85 is provided at the soldering tail end 81 of the pin terminal 8. The stop ledge 75 and the stop ledge 85 are to be mated with each other to retain the pin terminal 8.

[0039] FIG. 6 shows a cross-sectional view of an assembly of the insulating housing 3 and the conductive sleeve 4 of the board-end connector according to an example of the present disclosure. FIG. 7A shows a schematic view of an assembly of the cover 7 and the pin terminal 8 (i.e., the soldering terminal assembly) and an assembly of the insulating housing 3 and the conductive sleeve 4, with the guiding post structure 722 illustrated, according to an example of the present disclosure. FIG. 7B shows a schematic view, from another perspective, of the assembly of the cover 7 and the pin terminal 8 and the assembly of the insulating housing 3 and the conductive sleeve 4, with the guiding slot structure 322 illustrated, according to an example of the present disclosure. FIG. 8 shows a cross-sectional view of the assembly of the cover 7 and the pin terminal 8 and the assembly of the insulating housing 3 and the conductive sleeve 4 in a mated installation state.

[0040] With reference to FIG. 7A and FIG. 8, an annular boss 32 is provided at an end of the insulating housing 3. A first limiting structure 73 is provided at an inner side of the cover 7, while a mating second limiting structure 35 is provided at an outer side of the annular boss. After the cover 7 is sleeved and mounted onto the annular boss 32, the physical interference of the first limiting structure 73 with the second limiting structure 35 prevents the cover 7 from disengaging from the annular boss 32. In another aspect, as shown in FIG. 8, when the bottom of the cover 7 is in contact with the top of the annular boss 32, the first limiting structure 73 is to be in no contact with the second limiting structure 35. Such configuration of the insulating housing 3 and the cover 7 enables them, after their mated installation, to slide axially and be limited within a predetermined spatial range.

[0041] Further, as shown in FIG. 7A and FIG. 7B, the first limiting structure 73 is limiting protrusion(s) 735 at the inner side of the cover 7, while the second limiting structure 35 is limiting recess(es) 325 at the outer side of the annular boss 32. After the cover 7 is sleeved and mounted onto the annular boss 32, the limiting recess(es) 325 is to receive the limiting protrusion(s) 735 and to allow for the axial movement of the limiting protrusion(s) 735 within the limiting recess(es) 325.

[0042] Further, as shown in FIG. 2, FIG. 7A, and FIG. 7B, guiding post(s) 72 is provided on the cover 7. The guiding post(s) 72 form protrusion(s) 722 inward from the side wall of the cover 7. The protrusion(s) is to be mated with guiding slot(s) 322 on the annular boss 32 of the insulating housing 3. The mating of the guiding post(s) 72 and the guiding slot(s) 322 is to allow for the axial relative sliding between the cover 7 and the insulating housing 3 after they are inserted together, with a restriction on circumferential relative rotation therebetween.

[0043] As shown in FIG. 6 and FIG. 8, the board-end connector 100 comprises the conductive sleeve 4 to be mounted in the insulating housing 3. One end of the conductive sleeve 4 is to be used for mated connection with the insertion body 82 of the pin terminal 8, and the other end of the conductive sleeve 4 is to be used for connection with a terminal in a mating connector (not shown). The conductive sleeve 4 may be provided with an elastic coupling member therein, to establish a slidable electrical connection between the inner wall of the conductive sleeve 4 and the insertion body 82 of the pin terminal 8 when inserted into the sleeve. In FIG. 1, the elastic coupling member is shown as a crown spring 5. One skilled in the art can understand that the elastic coupling member may be a claw, a leaf spring, a torsion spring, or a wire spring, etc.

[0044] FIG. 9A and FIG. 9B show schematic views of mounting of the board-end connector according to an example of the present disclosure. As shown, the assembly of the board-end connector 100 without the locknut 1 may be fixed to the PCB 920 by soldering. Then, the assembly is mounted to the mounting panel 910, and secured by the locknut 1 at the other side of the panel.

[0045] FIG. 10A and FIG. 10B show mounting of the board-end connector according to an example of the present disclosure, with different spacings between the PCB 920 and the mounting panel 910. By comparing the spacing between the PCB 920 and the mounting panel 910 in FIG. 10A and FIG. 10B, it can be seen that in FIG. 10B the spacing is larger. Since the cover 7 and the insulating housing 3 can slide axially and be limited within a predetermined spatial range after their mated installation and the insertion body 82 of the pin terminal 8 can slide in the conductive sleeve 4, the board-end connector 100 can accommodate the installation conditions of FIG. 10B without causing pulling force to the solder joint on the PCB 920.

[0046] In the above examples, the pin terminal 8 is used as an example of soldering terminals, though it can be understood that other forms of a terminal having a soldering tail end are also possible.

[0047] In the above examples, the sealing washer 2 and the retaining ring 6 are illustrated, though it can be understood that the use of the sealing washer and the retaining ring and the specific form they take do not limit the present disclosure.

[0048] In the above examples, the PCB is used as the soldering position of the soldering terminal, though it can be understood that the soldering position of the soldering terminal may be any component in other forms and with other names.

[0049] The foregoing has described the basic concepts. Apparently, for one skilled in the art, the above disclosure is only an example and does not limit the present application. Although not explicitly stated herein, one skilled in the art may make various modifications, improvements, and amendments to the present application. Such modifications, improvements, and amendments are proposed in the present application, so these modifications, improvements, and amendments still fall within the spirit and scope of the examples of the present application.