A board end connector

Abstract

The present application relates to the technical field of connectors, in particular to a board end connector. The board end connector comprises a terminal with a certain angle bending, an insulating plastic part and a metal shell, the insulating plastic part is connected to the terminal in a plug-in mode, the metal shell is connected to the insulating plastic part in a plug-in mode, and a blocking piece is arranged in the metal shell and adheres to the end surface of the insulating plastic part in the backward direction. The insulating plastic part of the board end connector has a convex structure, when the terminal is subjected to an axial force, the convex part can effectively provide a counteracting force to offset the force, thereby preventing the terminal from retreating after being subjected to the force, and the convex part close to the mating end of the PCB can effectively fix the shaking amount of the terminal, improve the position degree of the terminal, and the metal shell of the board end connector is increased with a plastic blocking piece to limit and hold the insulating plastic part and the terminal, which prevents the insulating plastic part from retreating from the metal shell and prevents the terminal from retreating from the insulating plastic part in the mechanical function.

Description

TECHNICAL FIELD

[0001] The present application relates to a connector, in particular to a board end connector. BACKGROUND

[0002] When the vehicle-mounted differential signal connector, the radio frequency coaxial connector and the PCB board are matched, the connection is needed through the board end connector. The structure of the board end connector includes the insulating plastic part, the metal shell and other components. The cooperation mode of the insulating plastic part and the metal shell generally adopts the barb structure or the convex rib extrusion interference to achieve the anti-retreat purpose. The cooperation mode of the terminal and the insulating plastic generally adopts the barb structure or is fixed by other structural parts to achieve the anti-retreat purpose. Only the barb structure is easy to produce wear and will fail after long-term use.

[0003] Signal Integrity and Power Integrity Analysis, Eric Bogatin, mentions that due to the terminal exposure, the power lines between the terminals and the terminals and the shielding shell pass through the air more often. After adding the plastic plate barrier, the terminal air gap is filled, the power lines pass through the medium more often, the existence of the insulating material between the conductors increases the capacitance compared to the case without the medium material between the conductors, the effective dielectric constant becomes larger, the unit length capacitance becomes larger, thereby affecting the impedance matching. SUMMARY

[0004] The present application aims to solve the above-mentioned defects and provides a board end connector.

[0005] In order to overcome the defects in the background art, the technical scheme adopted by the present application to solve the technical problems is that the board end connector includes a terminal with a certain angle bending, an insulating plastic part and a metal shell. The metal shell is connected to the insulating plastic part in a plug-in manner. The insulating plastic part is connected to the terminal in a plug-in manner. The metal shell further has a barrier piece inside, which is attached to the end face of the insulating plastic part in the backward direction.

[0006] According to another embodiment of the present application, further comprising that the terminal is provided with a bending part and a vertical part, the insulating plastic part is provided with a through hole for connecting the vertical part, one end of the insulating plastic part is provided with a groove in communication with the through hole, the bending part is connected in the groove, and the entrance of the groove is provided with a slope chamfer structure and a hook boss.

[0007] According to another embodiment of the present application, further comprising that the vertical part is provided with a barb, and the barb is provided with at least one group.

[0008] According to another embodiment of the present application, further comprising that the distance m from the hook boss to the axis of the vertical part and the hole diameter n at the bending part satisfy the relationship m≤10n.

[0009] According to another embodiment of the present application, the connecting angle between the bending part and the vertical part is 90°.

[0010] According to another embodiment of the present application, the bending part and the vertical part are directly connected by stamping and blanking, or the bending part and the vertical part are connected by stamping 180° and then passing through a mold or a tooling device.

[0011] According to another embodiment of the present application, the barrier piece is in the shape of a "T", the barrier piece is made of insulating plastic material or metal material, and the hanging ears at both ends of the barrier piece are insertedly connected into the embedding grooves arranged on the metal shell.

[0012] According to another embodiment of the present application, the hanging ears at both ends of the barrier piece are provided with stepped structures or "S" shaped structures, the end surface of the barrier piece to which the insulating plastic piece is attached is provided with a convex strip, the stepped hanging ears of the barrier piece are insertedly connected into the embedding grooves arranged on the metal shell, and the embedding grooves are provided with stepped structures matched with the stepped hanging ears at both ends of the barrier piece, and the convex strip of the barrier piece is embeddedly connected into the recess groove of the insulating plastic piece.

[0013] According to another embodiment of the present application, the inner side of the metal shell is provided with a recess groove side wall for connecting and placing the insulating plastic piece, and the recess groove side wall is provided with a catch convex block.

[0014] According to another embodiment of the present application, the end surface of the barrier piece to which the insulating plastic piece is attached is provided with a convex point for contact connection with the end surface of the insulating plastic piece.

[0015] The beneficial effects of the present application are as follows: the insulating plastic piece of the board end connector has a convex structure, when the terminal is subjected to an axial force, the convex part close to the shaft center can effectively provide a counteracting force to offset, thereby preventing the terminal from retreating after being subjected to the force, and the convex part close to the mating end of the PCB board can effectively fix the shaking amount of the terminal, improve the position degree of the terminal, the plastic barrier piece is arranged on the metal shell of the board end connector to limit and hold the insulating plastic piece and the terminal, and the mechanical function prevents the insulating plastic piece from retreating from the metal shell and also prevents the terminal from retreating from the insulating plastic piece. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in conjunction with the drawings and embodiments.

[0017] Figure 1 is a structural schematic diagram of an explosion diagram of the present application;

[0018] Figure 2 is a structural schematic diagram of an assembly explosion diagram of the terminal and the insulating plastic piece of the present application;

[0019] Figure 3 This is a structural schematic diagram of the assembly cross-sectional view of the terminals and insulating plastic parts of the present invention;

[0020] Figure 4 This is a schematic diagram of the assembly of the terminals and insulating plastic parts of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the present invention with a baffle plate;

[0022] Figure 6 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0025] Among them: 1. Conductor, 2. Insulating plastic part, 3. Bending part, 4. Groove, 5. Through hole, 6. Vertical part, 7. Barb, 8. Hook boss, 9. Metal shell, 10. Inset groove, 11. Hook protrusion, 12. Partition plate, 13. Raised strip, 14. Raised dot. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1 As shown in the figure, the figure includes a terminal 1 with a certain angle bend, an insulating plastic part 2, and a metal housing 9. The insulating plastic part 2 is inserted into the metal housing 9, and the terminal 1 is inserted into the insulating plastic part 2. The metal housing 9 is also provided with a baffle plate 12, which is attached to the end face of the insulating plastic part 2 in the backward direction.

[0028] In a preferred embodiment, terminal 1 has a bent portion 3 and a vertical portion 6. The insulating plastic part 2 has a through hole 5 for connecting the vertical portion 6. One end of the insulating plastic part 2 has a groove 4 communicating with the through hole 5. The bent portion 3 is connected inside the groove 4. The entrance of the groove 4 has a chamfered structure and a hook protrusion 8. Terminal 1 is also called a conductor. Terminal 1 is inserted into the through hole 5 of the insulating plastic part 2, that is, the vertical portion 6 is located inside the through hole 5, and the bent portion 3 is located inside the groove 4. One end of the conductor 1 is a male-female mating end, and the other end is a PCB board mating end.

[0029] Preferably, the vertical part 6 is provided with barbs 7, and the barbs 7 are provided with at least one group. The barbs 7 are arranged on the vertical part 6 in a manner matched with the through hole 5 of the insulating plastic part 2, so as to prevent the needle from being withdrawn. The barbs 7 are designed in multiple groups according to the change of the pipe diameter.

[0030] Preferably, the distance m from the hook boss 8 to the axis of the vertical part 6 is related to the hole diameter n at the bending part 3 as m≤10n. When the electric conductor 1 is subjected to an axial force, the hook boss 8 can effectively provide a counterforce to offset, so as to prevent the electric conductor 1 from being withdrawn after being subjected to the force. Moreover, the protrusion close to the PCB matching end can effectively fix the terminal wobble amount, so as to improve the position degree of the terminal.

[0031] Preferably, the connection angle between the bending part 3 and the vertical part 6 is 90°, and the electric conductor 1 is bent at a certain angle, and the bending angle is 90°, but is not limited to 90°.

[0032] Preferably, the bending part 3 and the vertical part 6 are connected by stamping and directly blanking and bending, or the bending part 3 and the vertical part 6 are connected by stamping 180° and then being bent by a die or a tooling device.

[0033] Preferably, the barrier sheet 12 is in a “T” shape, and the barrier sheet 12 is made of an insulating plastic material or a metal material. The two ends of the barrier sheet 12 are inserted into the embedded groove 10 arranged on the metal shell 9 in a hanging ear plug-in mode. The metal shell 9 is provided with the barrier sheet 12 for fixing the insulating plastic part, and the barrier sheet 12 blocks the withdrawal direction of the insulating plastic part, so as to limit the position of the insulating plastic part. When the barrier sheet 12 is made of an insulating plastic material, the barrier sheet 12 is in contact with the inner and outer conductors at the same time, and the mechanical function is better. At the same time, the barrier sheet 12 fills the air gap around the terminal, and the dielectric constant is adjusted to match and balance the impedance. When the barrier sheet 12 is a metal barrier sheet, the barrier sheet 12 mechanically controls the withdrawal of the insulating plastic part, and at the same time, the barrier sheet 12 forms a closed loop shielding with the metal shell, so as to improve the electromagnetic shielding efficiency.

[0034] Preferably, the hanging ear part of the barrier sheet 12 is provided with a stepped structure or an “S” shape structure. The barrier sheet 12 is provided with a protrusion 13 on the end surface of the insulating plastic part 2. The protrusion 13 can effectively adjust the dielectric constant. The hanging ear part of the barrier sheet 12 is inserted into the embedded groove 10 arranged on the metal shell 9 in a plug-in mode. The embedded groove 10 is provided with a stepped structure matched with the stepped hanging ear part of the barrier sheet 12. The protrusion 13 of the barrier sheet 12 is embedded into the groove 4 of the insulating plastic part 2 in a plug-in mode.

[0035] The structure of the lugs at both ends of the partition plate 12 can be divided into two types: one is that the lugs at both ends of the partition plate 12 have a stepped structure. When the lugs at both ends of the partition plate 12 are stepped, the grooves 10 provided on the metal shell 9 are also stepped accordingly. The lugs of the stepped structure on the partition plate 12 are inserted into the grooves 10 provided on the metal shell 9. The other type is that the lugs at both ends of the partition plate 12 have an "S" shaped structure, and the grooves 10 provided on the metal shell 9 can be square grooves of corresponding width.

[0036] In a preferred embodiment, the inner side of the metal housing 4 is provided with a groove for connecting and placing the insulating plastic part 2, and the side wall is provided with a hook protrusion 11.

[0037] In a preferred embodiment, the end face of the baffle plate 12 that is attached to the end of the insulating plastic part 2 is provided with a protrusion 14 for contacting the end face of the insulating plastic part 2.

[0038] Example 1, as Figure 1 , 2 As shown in Figure 6,

[0039] Terminal 1 is inserted into the through hole 5 on the insulating plastic part 2. The barbs 7 on the vertical part 6 of terminal 1 fit against the inner wall of the through hole 5. The bent part 3 of terminal 1 falls into the groove 4, and the upper end of the bent part 3 of terminal 1 abuts against the hook protrusion 8. The barbs 7 and the hook protrusion 8 provide double protection to prevent terminal 1 from moving backward under force. Then, the insulating plastic part 2 is inserted into the metal housing 9. A metal baffle 12 is inserted into the metal housing 9. The lugs at both ends of the baffle 12 have an "S" shape. The lugs at both ends of the baffle 12 are inserted into the grooves 10 on the metal housing 9. The 360° metal full coverage of the baffle 12 is beneficial for impedance matching and electromagnetic shielding. The metal baffle is installed in place, blocking the backward movement of the insulating plastic and limiting its position. At the same time, the terminal is fully enclosed in the cavity, improving the impedance matching and electromagnetic shielding effect.

[0040] Example 2, as Figure 2 , 5As shown in FIG. 7, the terminal 1 is inserted into the through hole 5 of the insulating plastic part 2, the barb 7 on the vertical part 6 of the terminal 1 is attached to the inner wall of the through hole 5, the bent part 3 of the terminal 1 falls into the groove 4, and the upper end of the bent part 3 of the terminal 1 is stopped by the hook boss 8. The barb 7 and the hook boss 8 are arranged to provide double insurance to prevent the terminal 1 from retreating under force. Then, the insulating plastic part 2 is inserted into the metal shell 9. The insulating plastic material barrier 12 is inserted into the metal shell 9. The stepped structure is arranged at the hanging ears at both ends of the barrier 12. The hanging ears of the stepped structure on the barrier 12 are inserted into the embedded groove 10 arranged on the metal shell 9 in a plug-in manner. The embedded groove 10 is provided with a stepped structure matching the stepped hanging ears at both ends of the barrier 12. Meanwhile, the protrusions 13 on the barrier 12 are embedded into the groove 4 of the insulating plastic part 2 in a plug-in manner. By increasing the plastic barrier on the metal shell 9, the insulating plastic part and the terminal are limited and fixed. The mechanical function prevents the insulating plastic part from retreating from the metal shell 9 and prevents the terminal 1 from retreating from the insulating plastic part 2. Meanwhile, the air gap behind the terminal is filled to match the impedance.

[0041] As shown in FIG. 7, the terminal 1 is inserted into the through hole 5 of the insulating plastic part 2, the barb 7 on the vertical part 6 of the terminal 1 is attached to the inner wall of the through hole 5, the bent part 3 of the terminal 1 falls into the groove 4, and the upper end of the bent part 3 of the terminal 1 is stopped by the hook boss 8. The barb 7 and the hook boss 8 are arranged to provide double insurance to prevent the terminal 1 from retreating under force. Then, the insulating plastic part 2 is inserted into the metal shell 9. The insulating plastic material barrier 12 is inserted into the metal shell 9. The stepped structure is arranged at the hanging ears at both ends of the barrier 12. The hanging ears of the stepped structure on the barrier 12 are inserted into the embedded groove 10 arranged on the metal shell 9 in a plug-in manner. The embedded groove 10 is provided with a stepped structure matching the stepped hanging ears at both ends of the barrier 12. Meanwhile, the protrusions 13 on the barrier 12 are embedded into the groove 4 of the insulating plastic part 2 in a plug-in manner. By increasing the plastic barrier on the metal shell 9, the insulating plastic part and the terminal are limited and fixed. The mechanical function prevents the insulating plastic part from retreating from the metal shell 9 and prevents the terminal 1 from retreating from the insulating plastic part 2. Meanwhile, the air gap behind the terminal is filled to match the impedance. Figure 8

[0042] The above description is only a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes within the technical range disclosed in the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.​

Claims

1. A board-end connector, comprising a terminal (1) bent at a certain angle, an insulating plastic part (2), and a metal housing (9), characterized in that: The metal housing (9) is inserted into an insulating plastic part (2), and the insulating plastic part (2) is inserted into a terminal (1). The metal housing (9) is also provided with a baffle plate (12), which is attached to the end face of the insulating plastic part (2) in the backward direction. The terminal (1) is provided with a bent part (3) and a vertical part (6). The insulating plastic part (2) is provided with a through hole (5) for connecting the vertical part (6). One end of the insulating plastic part (2) is provided with a groove (4) communicating with the through hole (5). The bent part (3) is connected in the groove (4). The entrance of the groove (4) is provided with a chamfered structure and a hook protrusion (8). The distance m from the hook protrusion (8) to the axis of the vertical part (6) is related to the hole diameter n at the bent part (3) as m≤10n. The baffle plate (12) is T-shaped. 2) The material is insulating plastic or metal. The lugs at both ends of the partition (12) are inserted into the grooves (10) provided on the metal shell (9). The lugs at both ends of the partition (12) are provided with a stepped structure or an "S"-shaped structure. The end face of the partition (12) that is attached to the insulating plastic part (2) is provided with a protrusion (13). The lugs of the stepped structure on the partition (12) are inserted into the grooves (10) provided on the metal shell (9). The groove (10) is provided with a stepped structure that matches the stepped lugs at both ends of the partition (12). The protrusion (13) on the partition (12) is embedded in the groove (4) of the insulating plastic part (2). The end face of the partition (12) that is attached to the insulating plastic part (2) is provided with a protrusion (14) for contacting the end face of the insulating plastic part (2).

2. The board-end connector as described in claim 1, characterized in that: The vertical portion (6) is provided with barbs (7), and at least one set of barbs (7) is provided.

3. The board-end connector as described in claim 1, characterized in that: The connection angle between the bent portion (3) and the vertical portion (6) is 90°.

4. The board-end connector as described in claim 1, characterized in that: The bent portion (3) and the vertical portion (6) are connected by direct blanking and bending through stamping, or the bent portion (3) and the vertical portion (6) are connected by stamping 180° and then bending through a mold or tooling equipment.

5. A board-end connector as described in claim 1, characterized in that: The inner side of the metal housing (9) is provided with a groove for connecting and placing the insulating plastic part (2), and the side wall is provided with a hook protrusion (11).

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