Connector convenient to assemble and disassemble

Abstract

The utility model discloses a connector convenient to assemble and disassemble, which comprises a shell, a plurality of PCBs (Printed Circuit Board) and a cable connected with the PCBs, the shell comprises a first shell and a second shell, complementary limiting clamping structures are arranged between the shells, a locking piece is also arranged on the outer side of the shell, and the locking piece is connected with the first shell and the second shell. The mutual covering direction of the shell assemblies is orthogonal to the splicing direction of the locking piece assemblies, the covering and fixing mode of the shell can reduce the use of fool-proof columns and connecting columns, so that the installation of the connector is quicker and easier, meanwhile, the application of riveting equipment is avoided in the assembling and disassembling process, the damage to the shell is reduced, and the service life of the connector is prolonged. And the production cost is further reduced.

Description

Technical Field

[0001] The utility model relates to the field of connector structures for communications, in particular to the field of external lines of high-speed cable signal lines, and specifically to a connector that is easy to assemble and disassemble. Background Art

[0002] As an important structure of information communication, connectors play an increasingly important role in modern social life. Due to the importance of connectors, the quality requirements for their products will become higher and higher. Connectors generally include a shell and PCB circuit boards, cables and other components in the shell. Products with unqualified internal assembly often have to be scrapped or disassembled and reassembled. For high-speed signal lines, due to the large amount of data transmission in a short period of time, the corresponding connectors are often designed with multiple PCB circuit boards. The corresponding signal line body also has a larger wire diameter due to the large number of core wires. Therefore, there will be more requirements for assembly, and accordingly, the assembly and disassembly of the connector will also be more complicated.

[0003] First of all, for multiple PCBs, there are usually certain requirements for the spatial order. To avoid incorrect installation positions of different PCBs, existing connectors are mostly designed with anti-fool posts, so that different PCBs have different shapes. Only when the PCBs are placed in the correct position can the connector housing be closed. However, it was found during assembly that the design of the anti-fool post would cause trouble for connector assembly and even interfere with the connector assembly, making the housing cover not tight. If the cover is forced, it may even damage the internal components of the connector. Therefore, the design of the anti-fool post needs to be further optimized.

[0004] Secondly, for connectors for thick cables, a locking piece is often provided outside the shell, which ensures that the shell components are tightly closed and covered to avoid gaps in the shell. Existing locking pieces and grounding plates are often pre-set closed ring structures, which need to be sleeved onto the connector wire body before installation, and then sleeved onto the connector shell and fixedly locked after the connector is assembled. However, during the sleeve connection process, since the cable body is relatively thick, the locking piece or grounding plate may damage the cable. Therefore, the structure of the grounding plate and the locking piece needs to be further optimized.

[0005] Thirdly, the existing housings are mostly made by connecting two covers and then riveting them together through the positioning columns between the covers. Once a defective product is found, the riveted point needs to be destroyed to disassemble the connector and reassemble its internal structure. Obviously, after the riveted point is destroyed, the corresponding cover is completely scrapped. However, defective products are difficult to completely avoid during the production process. Therefore, the existing connection method between the covers may cause high production costs and inconvenience in installation or disassembly. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a connector which is easy to assemble and disassemble, and can avoid damage to the shell during the disassembly process, thereby reducing the scrap rate of the shell.

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

[0008] A connector that is easy to assemble and disassemble, comprising a shell, multiple PCB circuit boards and cables connected to the PCB circuit boards, characterized in that: the shell comprises a first shell and a second shell, and a complementary limit clamping structure is provided between the first shell and the second shell; a locking piece is also installed on the outside of the shell, and the locking piece comprises a first locking piece and a second locking piece, and the direction in which the shells cover each other is orthogonal to the direction in which the locking pieces are spliced.

[0009] Preferably, there are visual differences between the PCB circuit boards.

[0010] Preferably, the housing is provided with visual identification corresponding to each of the PCB circuit boards.

[0011] Preferably, the visual difference is a color difference or a visual distinguishing mark is provided on the cross section of the PCB circuit board.

[0012] Preferably, a drawstring is provided at the connection between the first shell and the second shell, and the first locking member and the second locking member both include a C-shaped clamping member, the first clamping member of the first locking member wraps around the drawstring to clamp the first shell and the second shell, and the second clamping member of the second locking member clamps the first shell and the second shell from a direction opposite to the first locking member.

[0013] Preferably, the clamping member includes three sections of locking plates connected in series, adjacent locking plates are perpendicular to each other and form a C-shaped structure, and snap-in slots are provided on the locking plates at both ends; protruding snap-in blocks are provided in pairs on the outer sides of the first shell and the second shell, and after the clamping member clamps the first shell and the second shell, the snap-in slots at both ends are respectively snapped onto the snap-in blocks on the surfaces of the two shells.

[0014] Preferably, the drawstring includes a strip-shaped belt body and a pull ring arranged at one end of the belt body, the other end of the belt body is enlarged to form a protrusion, the middle part of the clamping member of the first locking member extends along the cable direction to form a locking strip, the end of the locking strip protrudes toward the direction of the outer shell to form a locking tooth, and the belt body and the protrusion are clamped between the outer shell and the locking strip.

[0015] Preferably, a limiting groove is provided at the center of the drawstring, and a locking piece located in the middle of the first locking member protrudes toward the shell to form a limiting column, and the limiting column is inserted into the limiting groove.

[0016] Preferably, the locking strip is a hollow structure.

[0017] Preferably, a first grounding plate mounting groove and a second grounding plate mounting groove are respectively provided on the first shell and the second shell, and a first grounding spring sheet and a second grounding spring sheet are respectively covered on the first grounding plate mounting groove and the second grounding plate mounting groove, and after the first shell and the second shell are covered, two ends of the first grounding spring sheet and two ends of the second grounding spring sheet are respectively pressed together.

[0018] After adopting the above solution, the utility model has the following advantages:

[0019] 1. Due to the combined application of the limit card structure and the locking piece, the use of anti-fool columns and connecting columns can be reduced while ensuring the fixing strength of the connector shell, so that more space can be reserved inside the connector to accommodate cables and PCB circuit boards. For connectors of the same size, the larger internal space provides a guarantee for high-speed data transmission;

[0020] 2. The obvious visual difference can quickly determine whether the installation of multiple PCB circuit boards is correct. The PCB circuit boards do not need to cater to the anti-fool column design. The circuit boards and cables are not interfered by the connecting columns and anti-fool columns, which makes the installation more convenient and improves production efficiency.

[0021] 3. Using locking parts to fix the shell can avoid the use of riveting equipment, making it easier to assemble the connector, and no complicated riveting operation is required when disassembling the connector, which reduces damage to the shell, reduces the scrap rate of the shell, and thus reduces production costs;

[0022] 4. Improving the annular grounding plate into two C-shaped grounding plates can not only simplify the installation of the grounding plate, but also avoid damage to the cable when the annular grounding plate is sleeved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an assembly drawing of the utility model;

[0024] Figure 2 It is an exploded view of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the drawstring of the utility model;

[0026] Figure 4 It is a schematic diagram of the structure of the first locking member of the utility model. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] A connector that is easy to assemble and disassemble, including a housing 1, multiple PCB circuit boards 2 and a cable connected to the PCB circuit boards 2. The PCB circuit boards 2 are provided with gold fingers, and the cable is connected to the gold fingers by welding. This structure is well known to those skilled in the art, so the connection between the cable and the PCB circuit board 2 is no longer shown in the figure. In order to simplify the assembly and disassembly process, the anti-fool column design is eliminated inside the connector of this case. Instead, it is designed to have obvious visual differences between the PCB circuit boards 2, so that the installation position of the PCB circuit board 2 can be judged from the appearance when it is installed. Figure 1-4 As shown, it is a preferred embodiment of the utility model. In this embodiment, two PCB circuit boards 2 are designed, namely an upper PCB circuit board 21 and a lower PCB circuit board 22. The visual difference between different PCB circuit boards can be a color difference or a visual distinguishing mark is set on the cross section of the PCB circuit board. In this embodiment, the color difference is adopted, the upper PCB circuit board adopts a red board body, and the lower PCB circuit board adopts a green board body, and the visual distinguishing mark can be a protruding text or figure, or an engraved text or figure. Furthermore, a visual mark corresponding to each PCB circuit board can be provided on the shell. For example, for this embodiment, a corresponding color mark can be printed on the shell at the position corresponding to the PCB circuit board, or a mark corresponding to the color of the board body and the visual distinguishing mark of the board body can be left on the shell by laser, so that during installation, workers can quickly determine whether the PCB circuit board is installed correctly.

[0029] The locking of the traditional shell is often fixed by riveting the internal connecting column. The corresponding riveting equipment is required for installation and disassembly, and the shell will be scrapped after disassembly. In order to simplify the installation process and reduce the scrapping of the shell, the present case uses a locking member to lock and fix the shell. Specifically, the shell 1 includes a first shell 11 and a second shell 12. A locking member 3 is also installed on the outside of the shell 1. The locking member 3 includes a first locking member 31 and a second locking member 32. The direction in which the shells 1 cover each other is orthogonal to the direction in which the locking members 3 are spliced. In this embodiment, the first shell 11 and the second shell 12 are arranged on the left and right sides, and the first locking member 31 and the second locking member 32 are arranged up and down. After the shells 1 cover each other, the two locking members 3 clamp the first shell 11 and the second shell 12 from the upper and lower directions respectively. Furthermore, in order to prevent the two shells from sliding relative to each other, a complementary position-limiting snap-fitting structure is provided between the first shell 11 and the second shell 12. Specifically, a barb 13 is provided on the upper edge of the front end side wall of the first shell 11, and the hook tip of the barb 13 is an arc-shaped chamfer. The upper edge of the front end side wall of the second shell 12 is an arc-shaped protrusion 14 adapted to the barb 13. The hinge mechanism composed of the barb 13 and the protrusion 14 is the above-mentioned position-limiting snap-fitting structure, and the position-limiting snap-fitting structure can ensure the stability of the relative position between the two shells. When the first shell 11 and the second shell 12 are covered with each other, the protrusion 14 is snapped into the barb 13. The arc-shaped design of the hook tip and the protrusion 14 mainly satisfies that the protrusion 14 can slide into the barb 13 more easily during assembly. Of course, this complementary position-limiting snap-fitting structure can also have other forms, such as a serrated shape, etc., and any complementary structure that can achieve the same function can be used.

[0030] The first shell 11 and the second shell 12 are also provided with a first grounding plate installation groove 111 and a second grounding plate installation groove 121, respectively. The first grounding spring 41 and the second grounding spring 42 are respectively covered on the first grounding plate installation groove 111 and the second grounding plate installation groove 121. After the first shell 11 and the second shell 12 are covered, the two ends of the first grounding spring 41 and the two ends of the second grounding spring 42 are pressed together. Once the first shell 11 and the second shell 12 are kept in a tightly covered state, the grounding springs 41 and 42 will not fall off. At the same time, a drawstring 5 is provided at the connection between the first shell 11 and the second shell 12. The drawstring 5 is mainly used to unlock the anti-mis-pull structure of the connector when pulling the connector, so that the connector can be smoothly removed from the interface.

[0031] The two locking members 31 and 32 respectively press the first shell 11 and the second shell 12 from the upper and lower directions. The rear ends of the first shell 11 and the second shell 12 are respectively provided with locking grooves 112 and 122. The first locking member 31 and the second locking member 32 both include C-shaped clamping members, which are wrapped on the locking grooves to achieve compression of the two shells. Specifically, the first clamping member 311 of the first locking member 31 wraps around the drawstring 5 and clamps the first shell 11 and the second shell 12. The second clamping member 321 of the second locking member 32 clamps the first shell 11 and the second shell 12 from the direction opposite to the first locking member 31. The clamping members each include three sections of locking plates connected in series, and adjacent locking plates are perpendicular to each other and form a C-shaped structure. The locking plates at both ends are provided with bayonet holes 312 and 322; the outer sides of the first shell 11 and the second shell 12 are provided with protruding clamping blocks 113 and 123 in pairs, and the clamping blocks 113 and 123 are respectively located in the middle of the locking grooves 112 and 122, and are two wedge-shaped bodies with flattened tops. The inclined surfaces of the wedge-shaped bodies are respectively facing away from the two ends of the locking plates. After the clamping members clamp the first shell 11 and the second shell 12, the bayonet holes 312 and 322 at both ends are respectively clamped on the clamping blocks 113 and 123 on the surfaces of the two shells 11 and 12, that is, the first clamping member 311 is clamped on the upper clamping blocks of the two shells 11 and 12, and the second clamping member 321 is clamped on the lower clamping blocks of the two shells 11 and 12.

[0032] The drawstring 5 includes a strip-shaped belt body 51 and a pull ring 52 arranged at one end of the belt body 51. The other end of the belt body 51 is expanded to form a protrusion 53. The protrusion 53 interacts with the first locking member 31 to achieve the anti-mis-pull locking and unlocking of the connector. Specifically, the middle part of the first clamping member 311 of the first locking member 31 extends along the cable direction to form a locking strip 313. The end of the locking strip 313 protrudes toward the housing 1 to form a locking tooth 314. The belt body 51 and the protrusion 53 are clamped between the housing 1 and the locking strip 313. The side of the housing 1 is provided with a receiving groove 15 for accommodating the protrusion 53 and a slope 16 for guiding the protrusion 53 to slide. When the connector is inserted into the interface, the protrusion 53 is located in the receiving groove 15, the locking strip 313 is attached to the belt body 51 due to elasticity, and the latch 314 is tightly bitten on the housing 1 to achieve anti-mis-pull locking; when the connector is to be pulled, the pull belt 5 is pulled by the pull ring 52, so that the protrusion 53 moves backward along the slope 16, and after the protrusion 53 leaves the receiving groove 15, a gap is generated between the locking strip 313 and the belt body 51, and then the latch 314 leaves the housing 1 to achieve unlocking. Further, a limiting groove 54 is provided in the center of the draw belt 5, and the locking piece located in the middle of the first locking member 31 protrudes toward the housing 1 to form a limiting column 315, and the limiting column 315 is inserted into the limiting groove 54, so that the draw belt 5 can slide between the first locking member 31 and the housing 1 according to a predetermined trajectory. Furthermore, the locking strip 313 is a hollow structure, which can reduce the contact area between the locking strip 313 and the drawstring 5, making the drawstring 5 smoother.

[0033] During installation, first wrap the first grounding spring sheet 41 and the second grounding spring sheet 42 on the grounding sheet installation grooves corresponding to the first shell 11 and the second shell 12, then place the PCB circuit board 2 in the correct position according to the visual difference, and cover the first shell 11 and the second shell 12 tightly with each other. Place the drawstring 5 at the connection of the shell 1, and use the first locking member 31 to wrap the drawstring 5 and clamp the first shell 11 and the second shell 12; use the second locking member 32 to press the first shell 11 and the second shell 12 from the other direction. This installation process no longer involves the anti-fool column, so there is more space inside to accommodate the PCB circuit board 2 and the cables connected thereto, and the installation process avoids the alignment problem of the connection column and the use of riveting equipment, simplifying the installation operation process. If a problem is found in the assembly of the connector, the connector can be quickly disassembled by disassembling the locking member 3. Similarly, the disassembly process does not require the use of professional equipment for riveting operations, and will not cause any damage to the shell 1, thereby controlling the production cost.

[0034] The above description is only a preferred embodiment of the utility model and does not limit the technical scope of the utility model. Therefore, any changes or modifications made according to the claims and description of the utility model should fall within the scope of the utility model patent.

Claims

1. A connector that is easy to assemble and disassemble, comprising a housing, a plurality of PCB circuit boards, and cables connected to the PCB circuit boards, characterized in that: The shell includes a first shell and a second shell, and a complementary limiting snap-in structure is provided between the first shell and the second shell; a locking piece is also installed on the outside of the shell, and the locking piece includes a first locking piece and a second locking piece. The direction in which the shells cover each other is orthogonal to the direction in which the locking pieces are assembled.

2. A connector that is easy to assemble and disassemble according to claim 1, characterized in that: There are visual differences between the PCB circuit boards.

3. A connector that is easy to assemble and disassemble according to claim 2, characterized in that: The housing is provided with visual identifications corresponding to each of the PCB circuit boards.

4. A connector that is easy to assemble and disassemble according to claim 2, characterized in that: The visual difference is a color difference or a PCB circuit board cross section is provided with a visual distinguishing mark.

5. A connector that is easy to assemble and disassemble according to claim 1, characterized in that: A drawstring is provided at the connection between the first shell and the second shell, and the first locking member and the second locking member both include a C-shaped clamping member. The first clamping member of the first locking member wraps around the drawstring and clamps the first shell and the second shell, and the second clamping member of the second locking member clamps the first shell and the second shell from a direction opposite to the first locking member.

6. A connector that is easy to assemble and disassemble according to claim 5, characterized in that: The clamping member includes three locking plates connected in series, and the adjacent locking plates are perpendicular to each other and form a C-shaped structure. The locking plates at both ends are provided with bayonet holes. The outer sides of the first shell and the second shell are provided with protruding clamping blocks in pairs. After the clamping member clamps the first shell and the second shell, the bayonet holes at both ends are respectively clamped on the clamping blocks on the surfaces of the two shells.

7. A connector that is easy to assemble and disassemble according to claim 6, characterized in that: The drawstring includes a strip-shaped belt body and a pull ring arranged at one end of the belt body, the other end of the belt body is enlarged to form a protrusion, the middle part of the clamping member of the first locking member extends along the cable direction to form a locking strip, the end of the locking strip protrudes toward the shell direction to form a locking tooth, and the belt body and the protrusion are clamped between the shell and the locking strip.

8. A connector that is easy to assemble and disassemble according to claim 7, characterized in that: A limiting groove is provided at the center of the drawstring, and a locking piece of the first locking member located in the middle protrudes toward the shell to form a limiting column, and the limiting column is inserted into the limiting groove.

9. A connector that is easy to assemble and disassemble according to claim 7, characterized in that: The locking strip is a hollow structure.

10. A connector that is easy to assemble and disassemble according to any one of claims 1 to 9, characterized in that: The first shell and the second shell are respectively provided with a first grounding plate mounting groove and a second grounding plate mounting groove, and the first grounding spring sheet and the second grounding spring sheet are respectively covered on the first grounding plate mounting groove and the second grounding plate mounting groove, and after the first shell and the second shell are covered, the two ends of the first grounding spring sheet and the two ends of the second grounding spring sheet are respectively pressed together.

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