A high- and low-frequency mixed connector capable of achieving high-frequency signal shielding and grounding

Abstract

This invention relates to a high-low frequency mixed-assembly connector capable of achieving high-frequency signal shielding and grounding, belonging to the connector field. High-frequency and low-frequency contacts are mounted within an insulator, which is housed within a metal casing. A spring is fitted over the high-frequency contact, and the spring has contact claws and cantilever claws. The contact claws are angled towards the center of the spring for elastic contact with the shielding casing of the high-frequency contact. The cantilever claws extend outward from the spring. The insulator has a first mounting hole, a second mounting hole, and a cantilever groove. The first mounting hole accommodates the high-frequency contact and the corresponding spring. The cantilever groove is located on one side of the first mounting hole and connects to it. The outer end of the cantilever groove opens onto the outer surface of the insulator, and the cantilever claws elastically contact the metal casing through the opening at the outer end of the cantilever groove. This invention solves the problem in high-low frequency mixed-assembly connectors where the high-frequency contact and the connector casing are not conductive, thus preventing high-frequency signal shielding and grounding.

Description

Technical Field

[0001] This invention belongs to the field of connectors, and specifically relates to a high- and low-frequency mixed connector that can achieve high-frequency signal shielding and grounding. Background Technology

[0002] In such Figure 1 In the prior art shown, the high- and low-frequency mixed connector mainly consists of a metal shell 1, an insulator 2, a first positioning spring, a high-frequency contact 3, and a low-frequency contact 4. The high-frequency contact 3 and the low-frequency contact 4 are axially fixed inside the insulator 2 by the first positioning spring. Normally, the high-frequency contact 3 is arranged in the center of the insulator 2, and the low-frequency contact 4 is arranged on the periphery. Since the insulator 2 physically isolates the contact shield shell from the metal shell 1 of the connector, it is impossible to achieve high-frequency signal shielding grounding. Therefore, if the high-frequency contact shield shell is to be connected to the connector shell, the shielding needs to be led out on the shielding wire connected to the high-frequency contact and connected to the shell separately. This shielding grounding method has the following problems: (1) The operation is complicated, requiring the introduction of additional connectors, which reduces reliability; (2) Using wires to achieve shielding grounding leads to increased resistance, which does not meet the user's low resistance requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a high-low frequency mixed connector that can achieve high-frequency signal shielding and grounding, so as to solve the problem that the high-frequency contact and the connector shell are not conductive in the high-frequency mixed connector, and thus cannot achieve high-frequency signal shielding and grounding.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a high-low frequency mixed connector capable of achieving high-frequency signal shielding and grounding, comprising a metal shell, an insulator, a high-frequency contact and a low-frequency contact, wherein the high-frequency contact and the low-frequency contact are installed in the insulator, the insulator is installed inside the metal shell, a spring is sleeved on the high-frequency contact, the spring is provided with contact claws and cantilevered claws, the contact claws are tilted toward the center of the spring for elastic contact with the contact shielding shell of the high-frequency contact, and the cantilevered claws extend outward from the spring;

[0005] The insulator is provided with a first mounting hole, a second mounting hole, and a cantilever groove. The first mounting hole is located at the center of the insulator and is used to accommodate the high-frequency contact and the corresponding spring. The cantilever groove is located on one side of the first mounting hole, and the inner end of the cantilever groove communicates with the first mounting hole. The outer end of the cantilever groove opens on the outer circumferential surface of the insulator. The cantilever spring claw is located in the cantilever groove and makes elastic contact with the metal shell through the opening at the outer end of the cantilever groove to achieve conductivity. The second mounting hole is used to install the low-frequency contact.

[0006] Its beneficial effects are as follows: by setting the spring component, on the one hand, the contact claw piece makes elastic contact with the contact shield shell on the surface of the high-frequency contact component, and on the other hand, the cantilever spring claw extends from the cantilever groove on the side of the insulator and makes contact with the metal shell of the connector to conduct electricity. Thus, without changing the overall shape and size of the connector, the shielding and grounding of high-frequency signals can be achieved by using only the spring component, which solves the problem that the high-frequency contact component and the connector shell are not conductive in high-frequency and low-frequency mixed connectors, and the high-frequency signal shielding and grounding cannot be achieved.

[0007] Furthermore, the spring component is a first positioning spring, on which a plurality of locking claws and a plurality of contact claws are spaced apart along its circumference. The locking claws are used to press against the end face of the limiting step on the surface of the high-frequency contact component, and the contact claws are used to make elastic contact with the contact shielding shell of the high-frequency contact component.

[0008] Its beneficial effects are: the installation of high-frequency contact components on insulators requires axial positioning by the first positioning spring. This invention does not require the addition of additional components, but directly utilizes the first positioning spring to optimize its structure and achieve shielding and grounding of high-frequency signals.

[0009] Furthermore, the width of the locking claw is greater than the width of the contact claw.

[0010] Its beneficial effects are: the locking claws are wide and strong, and can withstand large axial forces, which can be used to hold high-frequency contact parts, further ensuring the positioning effect of high-frequency contact parts; the contact claws are narrow and elastic, which can more reliably maintain contact with high-frequency contact parts and avoid poor contact problems caused by vibration.

[0011] Furthermore, the locking claw and the contact claw are offset by a certain distance in the axial direction, so that while the locking claw rests against the end face of the limiting step, the contact claw can elastically contact the outer circular surface of the limiting step.

[0012] Its beneficial effects are: the staggered arrangement of the two types of claws facilitates processing and avoids interference between the two types of claws during operation.

[0013] Furthermore, the locking claw and the contact claw are arranged alternately.

[0014] Its beneficial effect is that the alternating arrangement can make the two types of claw plates evenly distributed and evenly stressed.

[0015] Furthermore, the first positioning spring is provided with multiple through holes, each through hole is provided with the locking claw and contact claw, and a high-frequency contact element is inserted into each through hole, and the cantilever spring claw is provided on one side of the through hole.

[0016] Its beneficial effects are: multiple high-frequency contact components can be fitted into different through holes of the same first positioning spring, which can further reduce the number of parts and simplify the assembly process.

[0017] Furthermore, the spring is a grounding spring, which is sleeved together with the first positioning spring on the high-frequency contact and installed in the first mounting hole of the insulator.

[0018] Its advantages are: by using a grounding spring as the spring component, it is not necessary to make structural modifications to the original first positioning spring, which facilitates the flexible replacement of related parts during connector maintenance.

[0019] Furthermore, the cantilever pawl on the grounding spring has multiple bends to avoid the second mounting hole on the insulator.

[0020] Its beneficial effect is that it does not require changing the distribution of the mounting holes on the insulator; it can be achieved simply by using a suitable bending method to avoid the second mounting hole and the low-frequency contact.

[0021] Furthermore, the grounding spring is provided with multiple through holes, each through hole is provided with a high-frequency contact element, and a cantilever claw is provided on one side of each through hole.

[0022] Its beneficial effects are: multiple high-frequency contact components can be fitted into different through holes of the same first positioning spring, which can further reduce the number of parts and simplify the assembly process.

[0023] The low-frequency contact is fixed in the second mounting hole by a second positioning spring, and the second positioning spring is only provided with locking claws.

[0024] Its beneficial effect is that low-frequency contact components can be axially positioned using conventional positioning springs.

[0025] Furthermore, the high- and low-frequency mixed connector also includes an insulating pressure plate that connects the insulator. The insulating pressure plate is provided with a first boss hole and a second boss hole. Both the first boss hole and the second boss hole are provided with axially extending bosses, which are respectively used to engage with the first mounting hole and the second mounting hole for convex-concave connection.

[0026] Its beneficial effect is that, through the convex-concave fit between the first boss hole and the first mounting hole, the second boss hole and the second mounting hole, the creepage distance between the positioning springs on adjacent contact parts can be increased, thereby increasing the insulation resistance.

[0027] Furthermore, the insulating pressure plate and the insulator are positioned by a positioning groove and a positioning post that fit together in a convex-concave manner.

[0028] Its beneficial effect is that the convex and concave positioning grooves and positioning posts can ensure the reliable positioning of the insulating pressure plate and the insulator.

[0029] The beneficial effects of this invention are: without changing the overall dimensions of the connector, this invention can achieve shielding and grounding of high-frequency signals using only spring components, solving the problem that the high-frequency contacts in high- and low-frequency mixed connectors are not conductive to the connector shell, thus making it impossible to achieve shielding and grounding of high-frequency signals. Attached Figure Description

[0030] Figure 1 This is an end-face view of a high- and low-frequency mixed-assembly connector in the prior art;

[0031] Figure 2 This is an exploded view of the high- and low-frequency mixed connector in Example 1;

[0032] Figure 3 This is an end view of the high- and low-frequency mixed connector in Example 1;

[0033] Figure 4 This is a schematic diagram of the high-frequency contact of the high- and low-frequency mixed connector in Example 1;

[0034] Figure 5 This is a schematic diagram of the structure of the first positioning spring of the high-low frequency mixed connector in Example 1;

[0035] Figure 6 This is an axial view of the first positioning spring of the high-low frequency mixed connector in Example 1;

[0036] Figure 7 This is a schematic diagram of the first positioning spring locking the high-frequency contact in the high-low frequency mixed connector in Example 1;

[0037] Figure 8 This is a schematic diagram of the first positioning spring of the high-frequency mixed connector in Example 1 contacting the shielding shell of the high-frequency contact;

[0038] Figure 9 This is a schematic diagram of the insulator structure of the high- and low-frequency mixed connector in Example 1;

[0039] Figure 10 This is a schematic diagram of the assembly of the first positioning spring of the high-low frequency mixed connector in Example 1 within the insulator component;

[0040] Figure 11 This is a schematic diagram of the insulating pressure plate of the high- and low-frequency mixed connector in Example 1;

[0041] Figure 12 This is a cross-sectional view of the insulating pressure plate and insulator of the high- and low-frequency mixed connector in Example 1 after assembly;

[0042] Figure 13 This is an end view of the high- and low-frequency mixed connector in Example 2;

[0043] Figure 14 This is a schematic diagram of the grounding spring of the high-low frequency mixed connector in Example 2;

[0044] Figure 15 This is a schematic diagram of the grounding spring contacting the shielding shell of the high-frequency contact in the high- and low-frequency mixed connector in Example 2;

[0045] The markings in the diagram are: 1. Metal casing, 2. Insulator, 3. High-frequency contact, 4. Low-frequency contact, 5. First positioning spring, 6. Sealing body, 7. Contact shield casing, 8. Limiting step, 9. Locking claw, 10. Contact claw, 11. Cantilever spring, 12. First mounting hole, 13. Second mounting hole, 14. Cantilever groove, 15. Grounding spring, 16. Through hole, 17. Positioning groove, 18. Insulating pressure plate, 19. First boss hole, 20. Second boss hole, 21. Positioning post, 22. Second positioning spring. Detailed Implementation

[0046] The present invention will be further described in detail below with reference to the embodiments, but this should not be construed as limiting the invention in any way.

[0047] Example 1

[0048] A high- and low-frequency mixed connector capable of achieving high-frequency signal shielding and grounding, its structure is as follows: Figure 2 , 3 As shown, it includes a metal casing 1, an insulator 2, a high-frequency contact 3, a low-frequency contact 4, a positioning spring, and a sealing body 6. The high-frequency contact 3 and the low-frequency contact 4 are assembled in corresponding mounting holes in the insulator 2 by the positioning spring. The positioning spring can lock the corresponding contact in the insulator 2 axially to prevent the contact from moving axially.

[0049] like Figure 4 As shown, the surface of the high-frequency contact 3 is provided with a contact shielding shell 7, and a limiting step 8 is provided on the contact shielding shell 7.

[0050] In this embodiment, the positioning spring that cooperates with the high-frequency contact 3 is a first positioning spring 5. Besides locking the high-frequency contact 3, the first positioning spring 5 also provides shielding and grounding for high-frequency signals. To achieve this function, the structure of the first positioning spring 5 is as follows: Figure 5 , 6As shown, the first positioning spring 5 is a non-closed ring, meaning it has a notch on its side. During manufacturing, a metal plate of a certain width can be wound into a ring, with the notch located at the interface after winding. Multiple spring claws are distributed along the circumference of the through hole of the first positioning spring 5. These multiple spring claws include a wider locking claw 9 and a smaller contact claw 10, which are alternately arranged. In this embodiment, five locking claws 9 and five contact claws 10 are provided. Both the locking claw 9 and the contact claw 10 are tilted towards the center of the first positioning spring 5. The locking claw 9 has a larger width and better strength, capable of withstanding a larger axial force. It is used to grip the high-frequency contact 3 and press against the end face of the limiting step 8 on the surface of the high-frequency contact 3, locking and limiting the high-frequency contact 3 axially. Figure 7 As shown. The contact claw 10 has a small width and good elasticity, which can function as a contact element shielding shell 7. The first positioning spring 5 has a long cantilever claw 11 on its side. Its width is large, so it can be exposed from the slot on the side of the insulator 2 and make reliable elastic contact with the outer metal shell 1, thereby realizing high-frequency signal shielding grounding. Moreover, the contact resistance is small, which can meet the user's low resistance requirements.

[0051] Furthermore, the locking claw 9 and the contact claw 10 on the first positioning spring 5 are offset by a certain distance in the axial direction, so that while the locking claw 9 abuts against the end face of the limiting step 8, the contact claw 10 can elastically contact the outer circular surface of the limiting step 8, such as... Figure 8 As shown.

[0052] like Figure 9 As shown, the insulator 2 is provided with a first mounting hole 12 and a second mounting hole 13. The high-frequency contact 3 and the corresponding first positioning spring 5 are assembled in the first mounting hole 12. The low-frequency contact 4 and the corresponding second positioning spring 22 (see reference) Figure 12 As shown, the second positioning spring 22 on the low-frequency contact 4 is assembled in the second mounting hole 13. It does not require contact claw 10 and cantilever claw 11; only locking claw 9 is needed. A cantilever groove 14 is provided on the outer circumferential surface of the insulator 2. The cantilever groove 14 communicates one-to-one with the first mounting hole 12, and the shape of the cantilever groove 14 matches the shape of the cantilever claw 11. This allows the cantilever claw 11 to extend out of the insulator 2 through the cantilever groove 14 and elastically contact the metal outer shell 1 of the insulator 2 after the first positioning spring 5 is installed in the first mounting hole 12. Figure 10 As shown. The cantilever groove 14 is configured to provide space for support and elastic deformation of the cantilever claw 11, ensuring reliable contact between the cantilever claw 11 and the metal shell 1.

[0053] In other embodiments, multiple high-frequency contacts 3 on the insulator 2 can share a first positioning spring 5. That is, the first positioning spring 5 is provided with through holes corresponding to the high-frequency contacts 3. The locking claw 9 and the contact claw 10 are provided in the through holes, and the cantilever spring claw 11 is provided on one side of the through holes.

[0054] like Figure 11 As shown, in order to solve the insulation resistance problem between the contacts, the insulator 2 is also connected to an insulating pressure plate 18. The insulating pressure plate 18 has a plurality of first boss holes 19 and second boss holes 20. The first boss holes 19 and the second boss holes 20 are provided with bosses that protrude axially from the end face of the insulating pressure plate 18. The first boss holes 19 correspond one-to-one with the first mounting holes 12, and the second boss holes 20 correspond one-to-one with the second mounting holes 13. The boss of the first boss hole 19 can be inserted into the first mounting hole 12, and the boss of the second boss hole 20 can be inserted into the second mounting hole 13, thereby increasing the creepage distance between the positioning springs and increasing the insulation resistance.

[0055] Furthermore, the insulator 2 and the insulating pressure plate 18 can be positioned by the convex and concave fit of the positioning posts and positioning grooves to ensure the alignment of the corresponding mounting holes and boss holes. For example... Figure 10 , 11 As shown, a positioning groove 17 is provided on the end face of the insulator 2, and a positioning post 21 is provided on the end face of the insulating pressure plate 18. In other embodiments, the positioning groove 17 can also be provided on the insulating pressure plate 18, and the positioning post 21 can be provided on the insulator 2. Preferably, multiple positioning grooves 17 and positioning posts 21 can be provided. The assembly structure of the insulator 2 and the insulating pressure plate 18 is as follows. Figure 12 As shown, between the first positioning spring 5 and the second positioning spring 22, and between the two second positioning springs 22, due to the convex and concave fit of the corresponding boss holes and mounting holes, a larger creepage distance can be obtained compared to setting only the insulator 2, resulting in better insulation.

[0056] Example 2

[0057] In Embodiment 1, the high-frequency signal shielding grounding of the high-frequency contact 3 is achieved by improving the structure of the positioning spring. In this embodiment, the positioning spring adopts a conventional structure in the art, that is, only the locking claw 9 for axial positioning is provided, and the high-frequency signal shielding grounding of the high-frequency contact 3 is achieved by additionally providing the grounding spring 15.

[0058] like Figure 13 , 14 As shown, taking a connector with four high-frequency contacts 3 as an example, the grounding spring 15 has four through holes 16 so that it can be simultaneously fitted onto these four high-frequency contacts 3. Each through hole 16 is provided with multiple contact claws 10 for contacting the contact shielding shell 7 of the high-frequency contact 3, such as... Figure 15 As shown, multiple outwardly extending cantilever claws 11 are provided on the outside of the grounding spring 15. Similarly, a cantilever groove 14 is provided on the insulator 2 to accommodate and lead out the cantilever claws 11. The cantilever claws 11 make elastic contact with the metal shell 1 through the openings of the cantilever groove 14 on the side of the insulator 2, thereby achieving high-frequency signal shielding grounding. Preferably, one cantilever claw 11 is provided on one side of each through hole on the grounding spring.

[0059] It is understood that in other embodiments, the grounding spring 15 may also be installed one-to-one with the high-frequency contact 3, and each grounding spring 15 is provided with a cantilever claw 11.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the specific implementation of the present invention with reference to the above embodiments. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the protection scope of the pending claims.

Claims

1. A high- and low-frequency mixed connector capable of achieving high-frequency signal shielding and grounding, comprising a metal shell (1), an insulator (2), a high-frequency contact (3), and a low-frequency contact (4), wherein the high-frequency contact (3) and the low-frequency contact (4) are installed in the insulator (2), and the high-frequency contact (3) is arranged at the center of the insulator (2), and the low-frequency contact (4) is arranged on the periphery, wherein the insulator (2) is installed inside the metal shell (1), characterized in that, The high-frequency contact (3) is covered with a spring, which is a positioning spring or a grounding spring. The spring is provided with a contact claw (10) and a cantilever claw (11). The contact claw (10) is raised towards the center of the spring and is used to make elastic contact with the contact shielding shell (7) of the high-frequency contact (3). The cantilever claw (11) extends outward from the spring. The insulator (2) is provided with a first mounting hole (12), a second mounting hole (13), and a cantilever groove (14). The first mounting hole (12) is located at the center of the insulator (2) and is used to accommodate the high-frequency contact (3) and the corresponding spring. The cantilever groove (14) is located on one side of the first mounting hole (12), and the inner end of the cantilever groove (14) is connected to the first mounting hole (12). The outer end of the cantilever groove (14) opens on the outer circular surface of the insulator (2). The cantilever claw (11) is located in the cantilever groove (14) and makes elastic contact with the metal shell (1) through the opening at the outer end of the cantilever groove (14) to achieve conduction. The second mounting hole (13) is used to install the low-frequency contact (4). It also includes an insulating pressure plate (18) connecting the insulator (2). The insulating pressure plate (18) is provided with a first boss hole (19) and a second boss hole (20). The first boss hole (19) and the second boss hole (20) are both provided with axially extending bosses, which are respectively used to connect with the first mounting hole (12) and the second mounting hole (13) in a convex-concave fit.

2. The high- and low-frequency mixed connector according to claim 1, characterized in that, The spring component is a first positioning spring (5). Multiple locking claws (9) and multiple contact claws (10) are spaced apart along its circumference on the first positioning spring (5). The locking claws (9) are used to press against the end face of the limiting step (8) on the surface of the high-frequency contact component (3).

3. The high- and low-frequency mixed connector according to claim 2, characterized in that, The width of the locking claw (9) is greater than the width of the contact claw (10).

4. The high- and low-frequency mixed connector according to claim 2, characterized in that, The locking claw (9) and the contact claw (10) are offset by a certain distance in the axial direction, so that while the locking claw (9) is pressed against the end face of the limiting step (8), the contact claw (10) can elastically contact the outer circular surface of the limiting step (8).

5. The high- and low-frequency mixed connector according to claim 2, characterized in that, The locking claw (9) and the contact claw (10) are arranged alternately.

6. The high- and low-frequency mixed connector according to claim 2, characterized in that, The first positioning spring (5) for connecting the high-frequency contact (3) is provided with multiple through holes (16), each through hole (16) is provided with the locking claw (9) and the contact claw (10), and a high-frequency contact (3) is inserted in each through hole (16), and the cantilever spring claw (11) is provided on one side of the through hole (16).

7. The high- and low-frequency mixed connector according to claim 1, characterized in that, The spring is a grounding spring (15). The grounding spring (15) and the first positioning spring (5) are sleeved together on the high-frequency contact (3) and installed in the first mounting hole (12) of the insulator (2).

8. The high- and low-frequency mixed connector according to claim 7, characterized in that, The cantilever claw (11) on the grounding spring (15) has multiple bends to avoid the second mounting hole (13) on the insulator (2).

9. The high- and low-frequency mixed connector according to claim 7, characterized in that, The grounding spring (15) is provided with multiple through holes (16), each through hole (16) is provided with a high-frequency contact (3), and each through hole (16) is provided with a cantilever claw (11) on one side.

10. The high- and low-frequency mixed connector according to any one of claims 1-9, characterized in that, The low-frequency contact (4) is fixed in the second mounting hole (13) by the second positioning spring (22), and the second positioning spring (22) is only provided with locking claws (9).

11. The high- and low-frequency mixed connector according to claim 1, characterized in that, The insulating pressure plate (18) and the insulator (2) are positioned by a positioning groove (17) and a positioning post (21) that fit together.

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