CN215299699U - Shielding conduction structure, terminal module and connector - Google Patents

Abstract

Shielding conduction structure, terminal module and connector, shielding conduction structure are used for realizing that the lock of shielding piece and ground terminal is fixed and the shielding switches on, include: an elastic claw provided on one of the shield plate and the ground terminal; a fixing hole provided on the other of the shield plate and the ground terminal; the elastic claw comprises elastic claws which are oppositely arranged, one end of each elastic claw is a fixed end, the other end of each elastic claw is a movable end, and the outer side of each elastic claw is provided with a notch; after the elastic clamping claws are buckled with the fixing holes, the notches are matched with the fixing holes in a stopping way so as to realize the relative limit of the shielding sheet and the grounding terminal. The utility model discloses well shielding piece adopts jack catch and the ground terminal lock that has opening and elastic deformation, and the shielding piece is changed into the flexible contact of elasticity with the interference of ground terminal lock mode by intermetallic interference by force, effectively avoids the production of interference in-process wire, metal fillings by force, and the opening can play good limiting displacement, promotes the withstand voltage yields of assembly efficiency and product.

Description

Shielding conduction structure, terminal module and connector

Technical Field

The utility model belongs to the technical field of the connector, in particular to elasticity lock structure, terminal module and connector.

Background

In a modern data communication transmission system, the transmission rate is higher and higher, a high-speed interconnection system is widely applied to a communication network and a data exchange system, a high-speed backplane connector is used as a core bridge for data communication, the performance requirement is higher and higher, crosstalk is greatly reduced by applying various forms of shielding sheets, the shielding sheets are buckled with the wiring parts of grounding terminals to reduce crosstalk, the SI performance of the high-speed backplane connector is improved, and the transmission requirement of higher rate can be met.

Specifically, as shown in fig. 1 to 4, a plurality of peanut holes 101 are formed in an existing ground terminal 100, the peanut holes 101 have a plurality of interference fastening points 102, and shield plate claws 201 corresponding to the peanut holes are arranged on a shield plate 200; the combination of the shielding sheet and the grounding terminal is mainly clamped into the peanut hole 101 of the grounding terminal by means of interference forced mounting of the shielding sheet clamping claws 201, because the shielding sheet and the grounding terminal are made of metal materials, the deformation is extremely small, although chamfer transition guiding exists in interference forced mounting between metal and metal, metal wires and metal scraps are extremely easy to generate in the forced mounting process, the metal wires and the metal scraps generated in assembly are dissociated in a wiring terminal, the voltage resistance of a product is poor and the fault is easy to cause, and the metal wires and the metal scraps generated in the interference forced mounting process are difficult to control, discover and remove in the buckling mode, so that the yield of the product is reduced.

SUMMERY OF THE UTILITY MODEL

For solving the prior art problem, the utility model provides a shielding conduction structure, terminal module and connector can be changed the lock mode of shielding piece and ground terminal into elasticity flexible contact by intermetallic interference by force to effectively avoid the interference to adorn the production of in-process wire, metal fillings by force.

The purpose of the utility model and the technical problem thereof are realized by adopting the following technical scheme. The foundation the utility model provides a shielding conduction structure for the lock that realizes shielding piece and ground terminal is fixed and the shielding switches on, include:

an elastic claw provided on one of the shield plate and the ground terminal;

a fixing hole provided on the other of the shield plate and the ground terminal;

the elastic clamping jaw comprises elastic claws which are oppositely arranged, one end of each elastic claw is a fixed end, the other end of each elastic claw is a movable end, and the outer side of each elastic claw is provided with a notch; after the elastic clamping claws are buckled with the fixing holes, the openings and the side walls of the fixing holes are in blocking fit in the buckling and pulling-out directions of the shielding sheets so as to realize the relative limit of the shielding sheets and the grounding terminal.

Further, the shape of the gap includes, but is not limited to, a rectangle, a circle, or a U-shape.

Furthermore, the elastic claw is formed by bending the shielding sheet or the grounding terminal after a through groove is formed in the shielding sheet or the grounding terminal.

Further, the movable end of the elastic claw is provided with a guide chamfer.

Further, the fixing hole is a rectangular through hole.

The utility model discloses still provide a terminal module, it includes shielding piece, ground terminal, signal terminal and insulator, wherein ground terminal and the integrative injection moulding of signal terminal are in the insulator, the shielding piece is through foretell shielding conduction structure and earthing terminal looks lock.

The utility model also provides a connector, including insulating casing and at least one terminal module, the terminal module is installed on insulating casing, and the terminal module includes shielding piece, ground terminal, signal terminal and insulator, and the integrative injection moulding of ground terminal and signal terminal is in the insulator, the shielding piece is through foretell shielding conducting structure and ground terminal looks lock.

Further, the connector further comprises a fixing piece for connecting two or more terminal modules, and relative movement between the terminal modules and shaking of the terminal modules in the insulating housing can be prevented.

Further, the connector still includes the locating plate, and this locating plate is installed on the terminal module, and the locating plate specifically is located the crimping end department of terminal module, protects the fisheye crimping end of signal terminal and ground terminal.

Further, the connector is preferably a high-speed backplane connector, but the shield conductive structure is not limited to the application to the high-speed backplane connector, and may be applied to other types of connectors.

Borrow by above-mentioned technical scheme, the utility model discloses well shielding piece adopts jack catch and the ground terminal lock that has opening and elastic deformation, and the shielding piece is changed into elastic flexible contact by intermetallic interference force dress with the ground terminal lock mode, effectively avoids interference force dress in-process wire, the production of metal fillings, and the opening can play good limiting displacement, avoids the not hard up contact failure that leads to between lock back shielding piece and the ground terminal, and promotes the withstand voltage yields of assembly efficiency and product greatly.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view illustrating a shield plate and a ground terminal of the prior art.

Fig. 2 is a matching view of a peanut hole on a shield plate and a shield plate pawl in shielding conduction in the prior art.

Fig. 3 is a schematic view of a prior art peanut hole in a ground terminal.

Fig. 4 is a schematic structural diagram of a shielding plate claw in the prior art.

Fig. 5 is a perspective view of the shield sheet of the present invention.

Fig. 6 is a side view of the shield plate of the present invention.

Fig. 7 is a structural diagram of the elastic claw in the present invention.

Fig. 8 is a schematic view of a fixing hole formed in the middle ground terminal of the present invention.

Fig. 9 is a schematic front view of the middle shield plate and the grounding terminal of the present invention after being fastened together.

Fig. 10 is a schematic side view of the middle shield piece and the ground terminal after being fastened.

Fig. 11 is an exploded view of the connector of the present invention.

Fig. 12 is a rear view of the terminal module of the present invention.

Fig. 13 is a front view of the terminal module of the present invention.

Fig. 14 is a schematic side view of the terminal module of the present invention.

Fig. 15 is a schematic cross-sectional view of the middle terminal module of the present invention after the elastic claw is fastened to the fixing hole.

Fig. 16 is a partial schematic view of the middle terminal module of the present invention after the elastic claw is fastened to the fixing hole.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.

Fig. 5 to 16 show an embodiment of the connector, in which the connector is a high-speed backplane connector in this embodiment, the connector includes an insulating housing 1 and a plurality of terminal modules 2 mounted on the insulating housing in parallel, the terminal wires in adjacent terminal modules are staggered to facilitate high-frequency signal transmission, the terminal modules 2 are provided with plastic fasteners 21, and the plastic fasteners 21 are matched with positioning grooves 11 on the insulating housing 1 to realize quick insertion and fixation of the plurality of terminal modules.

As shown in fig. 12 to 14, the terminal module 2 includes a shielding plate 3, a ground terminal 4, a signal terminal 5 and an insulator 6, wherein the ground terminal 4 and the signal terminal 5 are both formed by stamping, and then the terminals are laid out and injection molded to arrange and distribute the ground terminal and the signal terminal in the insulator 6, that is, the insulator 6 is formed by injection molding, the shielding plate 3 is buckled with the ground terminal 4 through a shielding conduction structure, so that the shielding plate 3 and the ground terminal 4 can be mechanically fixed and connected and can be conducted. In the terminal module 2, the ground terminals 4 and the signal terminals 5 are arranged in a staggered manner, two adjacent signal terminals form a differential pair, and a ground terminal is arranged between the differential pair to prevent signal interference between the differential pair. It is known that, no matter the ground terminal or the signal terminal, all have integrated into one piece's crimping end, walk line portion and contact end, wherein walk line portion and inlay in the insulator, the crimping end is preferably fish eye structure for be connected with devices such as circuit board, the contact end is used for contacting with the adaptation contact in the adaptation connector and switches on, shielding piece 3 is the lateral part of spiral-lock dress at insulator 6 to with ground terminal 4 lock and contact and switch on, thereby realize shielding ground function.

In this embodiment, with reference to fig. 5 to 10, the shielding conduction structure includes an elastic claw 7 disposed on the shielding plate 3 and a fixing hole 8 disposed on the ground terminal 4, the fixing hole 8 is a rectangular hole, the elastic claw 7 and the fixing hole 8 are disposed in a one-to-one correspondence, the elastic claw 7 includes oppositely disposed elastic claws 71, the elastic claws 71 are in a cantilever beam type structure, that is, one end of the elastic claw 71 is a fixed end fixed to the shielding plate, the other end of the elastic claw 71 is a movable end, an opening 72 is disposed on an outer side of each elastic claw, and an avoiding through groove 73 for bending the elastic claw to the inside is formed between the two elastic claws. As shown in fig. 15 and 16, when the shielding plate is fastened to the ground terminal, the elastic claws 71 on both sides of the elastic claw are elastically deformed when contacting the fixing hole 8, the two elastic claws are respectively bent inward, after being assembled in place, the elastic claws 71 are deformed again, the hole walls on both sides of the fixing hole 8 respectively fall into the notches 72 on the corresponding sides, and at this time, the notches 72 and the fixing hole 8 are in stop fit in the extending direction of the elastic claws 71 (i.e., in both directions of fastening and pulling out the shielding plate), so that the shielding plate 3 and the ground terminal 4 are relatively limited. By means of the structural design, the buckling mode of the shielding sheet and the grounding terminal is changed from interference forced mounting between metals into elastic flexible contact, and the generation of metal wires and metal scraps in the interference forced mounting process can be effectively avoided. In this embodiment, the shape of the notch is rectangular, but may be circular or U-shaped.

Preferably, the elastic clamping jaw 7 is formed by bending the shielding sheet after the shielding sheet is provided with the groove, so that the elastic clamping jaw and the shielding sheet are integrally formed, the structural strength of the elastic clamping jaw is improved, and the service life of the elastic clamping jaw is prolonged; the two elastic claws 71 in each elastic claw 7 can be arranged in parallel or distributed in a V shape; in addition, the form of the elastic claw formed by opening the groove in the middle of the whole shielding sheet is not limited to the current rectangular form, and can also be round, U-shaped or other irregular shapes and the like.

In order to facilitate the buckling of the shielding plate 3, a guide chamfer 74 is arranged at the movable end of the elastic claw 71, as shown in fig. 7, and the guide chamfer can facilitate the elastic claw to deform towards the inside of the avoiding through groove under the action of the fixing hole; of course, the fixing hole may be provided with a guiding chamfer, or a matching guiding chamfer may be provided on the joint surface of the elastic claw and the fixing hole.

Further, with reference to fig. 11, the connector further includes a fixing plate 9, where the fixing plate 9 is used to connect two or more terminal modules, on one hand, the rear ends of all the terminal modules can be uniformly fixed relatively by the fixing plate, so as to avoid relative movement between the terminal modules, and on the other hand, when the front ends of the terminal modules are fixed to the insulating housing through plastic fasteners, the stable arrangement of the terminal modules inside the insulating housing can be ensured. The connection mode of the fixing sheet 9 and the terminal module 2 can be that a clamping groove is arranged on the fixing sheet, a clamping bulge is arranged on the terminal module, the clamping and the matching are relatively limited, and the fixing sheet and the terminal module can be fixedly connected by adopting conventional fasteners such as screws, clamping structures and the like.

Preferably, as shown in fig. 11, the connector further includes a positioning plate 10, the positioning plate 10 is mounted on the terminal module 2, and can be fixed and assembled with the insulator, for example, the positioning plate can be fastened to the crimping end of the terminal module by a conventional fastener such as a snap structure or a screw structure, so as to protect the fisheye crimping ends of the ground terminal and the signal terminal in each terminal module.

In another embodiment, the elastic claws arranged on the shielding plate are buckled with the fixing holes arranged on the grounding terminal in a position-interchangeable manner, that is, the elastic claws are arranged on the grounding terminal, the fixing holes are arranged on the shielding plate, and the elastic claws are buckled with the fixing holes to realize the relative fixation of the grounding terminal and the shielding plate.

In other embodiments, the use of the elastic fastening method with the gap is not limited to the high-speed backplane connector, but is also applicable to fastening the shielding plate and the ground terminal in other types of connectors.

The utility model discloses the concrete embodiment of well terminal module, it is the same with the terminal module structure in the above-mentioned connector embodiment, no longer describe here.

The utility model discloses well shielding conducting structure's specific embodiment, it is the same with shielding conducting structure's in the above-mentioned connector embodiment structure, no longer describe here.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art can easily modify, change or modify the above embodiments according to the technical spirit of the present invention without departing from the scope of the present invention.

Claims (10)

1. Shielding conduction structure for the lock that realizes shielding piece (3) and ground terminal (4) is fixed and shielding conduction, its characterized in that includes:

an elastic claw (7) provided on one of the shield plate (3) and the ground terminal (4);

a fixing hole (8) provided in the other of the shield plate (3) and the ground terminal (4);

the elastic claw (7) comprises elastic claws (71) which are oppositely arranged, one end of each elastic claw (71) is a fixed end, the other end of each elastic claw (71) is a movable end, and gaps (72) are formed in the outer sides of the elastic claws (71); after the elastic clamping claws are buckled with the fixing holes, the notches (72) are matched with the fixing holes (8) in a blocking way, so that the relative limit of the shielding sheet (3) and the grounding terminal (4) is realized.

2. The shielding via structure of claim 1, wherein: the shape of the gap (72) includes, but is not limited to, a rectangle, a circle, or a U-shape.

3. The shielding via structure of claim 1, wherein: the elastic claw (7) is formed by bending the shielding sheet (3) or the grounding terminal (4) after a through groove is formed.

4. The shielding via structure of claim 1, wherein: the movable end of the elastic claw (71) is provided with a guide chamfer (74).

5. The shielding via structure of claim 1, wherein: the fixing hole (8) is a rectangular through hole.

6. Terminal module, including shielding piece (3), ground terminal (4), signal terminal (5) and insulator (6), wherein ground terminal (4) and signal terminal (5) integrative injection moulding are in insulator (6), its characterized in that: the shielding sheet (3) is buckled with the grounding terminal (4) through a shielding conduction structure, and the shielding conduction structure is the shielding conduction structure of any one of claims 1 to 5.

7. Connector, including insulating casing (1) and at least one terminal module (2), terminal module (2) are installed on insulating casing (1), and terminal module (2) are including shielding piece (3), ground terminal (4), signal terminal (5) and insulator (6), and ground terminal (4) and signal terminal (5) integrative injection moulding are in insulator (6), its characterized in that: the shielding sheet (3) is buckled with the grounding terminal (4) through a shielding conduction structure, and the shielding conduction structure is the shielding conduction structure of any one of claims 1 to 5.

8. The connector of claim 7, wherein: the terminal module also comprises a fixing sheet (9) which is used for connecting two or more terminal modules.

9. The connector of claim 7, wherein: the terminal module also comprises a positioning plate (10) which is arranged on the terminal module (2).

10. The connector of claim 7, wherein: the connector is a high speed backplane connector.

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