A connecting device with a contact area increasing function
By adding a contact plane to the outer periphery of the metal shell and using an assembly to clamp a waterproof gasket, the problem of small contact area between the metal shell and the panel is solved, achieving better EMI/EMC protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN AMPHENOL ZHENGRI ELECTRONICS CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-08-04
AI Technical Summary
The small contact area between the metal shell and the panel of existing connectors results in poor EMI/EMC protection.
A contact surface is added to the outer circumference of the metal shell, and the panel is sandwiched between the assembly and the waterproof gasket to increase the contact area between the metal shell and the panel.
It significantly increases the contact area between the metal casing and the panel, improving the EMI/EMC protection effect.
Smart Images
Figure CN224595865U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector technology, and in particular to a connector device with an increased contact area function. Background Technology
[0002] The connectors used for mating with other connectors are fixed to a plate by being inserted through an opening, and waterproof gaskets are added for waterproofing.
[0003] A conventional connector has a metal housing with a flange that passes through a corresponding opening, such that the flange abuts against the inner side of the panel, and a waterproof gasket is sandwiched between the flange and the inner side of the panel, thus achieving a waterproof effect.
[0004] However, it is common practice to add external threads to the surface of the metal casing in order to clamp the waterproof gasket, and use a nut with internal threads to screw it onto the metal casing. As a result, only the flange of the metal casing will contact the panel. Although the inner edge formed by the corresponding opening of the panel can also contact the external threads, it is not a plane-to-plane contact. Obviously, the contact area is too small, and the EMI / EMC (electromagnetic interference / electromagnetic compatibility) protection effect is insufficient, which has been criticized for a long time.
[0005] Therefore, how to improve upon the shortcomings of the aforementioned prior technologies is a major issue that the creator of this application urgently needs to address. Utility Model Content
[0006] The purpose of this application is to provide a connecting device with an increased contact area function, which can add a contact plane portion to the outer peripheral surface of the metal shell to increase the contact area between the metal shell and the panel.
[0007] To achieve the above objectives, this application provides a connecting device with an increased contact area for fixing to a mounting hole on a panel. The panel has an inner peripheral wall corresponding to the mounting hole. The connecting device includes: a connector comprising a metal shell having an outer peripheral surface with a protruding stop portion, the outer peripheral surface further dividing into an outer assembly portion and a contact plane portion located between the stop portion and the outer assembly portion, the stop portion having a stop surface that abuts against one side of the panel; a waterproof gasket surrounding the outer peripheral surface; and an assembly being a hollow body having an inner assembly portion capable of engaging with the outer assembly portion. The assembly engages with the metal shell, and the waterproof gasket is sandwiched between the assembly and the other side of the panel. The assembly, together with the stop portion, clamps the panel via the waterproof gasket, and the metal shell additionally abuts the inner peripheral wall with the contact plane portion.
[0008] Compared to prior art, this application has the following advantages: by adding a contact plane to the inner peripheral wall of the panel through the metal shell, the contact area between the metal shell and the panel is greatly increased, thereby achieving better EMI / EMC protection. Attached Figure Description
[0009] Figure 1 This is a three-dimensional schematic diagram of the present application assembled behind the panel.
[0010] Figure 2 This is an exploded perspective view of the assembly of this application in front of the panel.
[0011] Figure 3 This application is based on Figure 2 The cross-sectional view shows that only the components have not yet been assembled.
[0012] Figure 4 This application is based on Figure 3 A cross-sectional view after assembly.
[0013] Figure label: 100: Connecting device; 1: Connector; 1a: Metal shell; 1b: Terminal group; 11: Outer peripheral surface; 111: External thread; 112: Contact plane; 13: Stopping part; 131: Stopping surface; 14: Insertion end; 15: Clamping end; 16: Cross-sectional plane; 3: Waterproof gasket; 31: Straight section; 5: Crimping ring; 51: Hollow part; 52: Inclined surface; 521: Straight section; 53: Pushed surface; 7: Assembly; 71: Hollow part; 72: Internal thread; 73: Pushing surface; 900: Panel; 9: Mounting hole; 91: Inner peripheral wall; 93: Inner side surface; 94: Outer side surface. Detailed Implementation
[0014] The technical solution protected by this utility model will be described in detail below with reference to the accompanying drawings.
[0015] This utility model provides a connecting device with an increased contact area function, such as... Figure 1 As shown, a panel 900 is fixed to an electronic product (not shown) for a mating connector (not shown) to be inserted into, thus having a mating direction (component symbol not indicated, equivalent to...). Figure 3 (The direction of the dotted arrow in the image), and the insertion direction is approximately perpendicular to the panel 90°.
[0016] like Figures 1 to 4 As shown, the connecting device 100 with increased contact area function of this application includes: a connector 1, a waterproof gasket 3, and an assembly 7, preferably also including a crimping ring 5. It should be noted that, as Figure 2 and Figure 3As shown, panel 900 has an inner side 93 and an outer side 94 that are opposite to each other. Panel 900 also has at least one mounting hole 9 that passes through the inner side 93 and the outer side 94. Panel 900 has an inner peripheral wall 91 corresponding to mounting hole 9.
[0017] Connector 1 can be any connector that allows the mating connector to be inserted into the mating direction. It includes a metal housing 1a and a terminal group 1b disposed in the metal housing 1a along the mating direction. The metal housing 1a also defines a radial direction (not indicated by component symbol) perpendicular to the aforementioned mating direction. The terminal group 1b includes a plurality of terminals (not indicated by component symbol).
[0018] The metal shell 1a is a hollow shell with an outer peripheral surface 11 and an inner peripheral surface (not indicated) facing each other. One end of the metal shell 1a is an open plug-in end 14 for corresponding insertion, and the other end is a generally closed clamping end 15. A stop portion 13 protrudes radially from the outer peripheral surface 11 corresponding to the clamping end 15. The stop portion 13 may be a ring-shaped protrusion from the outer peripheral surface 11 as shown in the figure, or it may include at least two lugs (not shown in the figure) that protrude from the outer peripheral surface 11 at intervals. This application does not limit this, but in this embodiment, a ring-shaped protrusion is used as an example for description.
[0019] The outer peripheral surface 11 of the metal shell 1a is further divided into an outer connection portion and a contact plane portion 112 along the aforementioned insertion direction. This application does not limit the type of connection structure of the outer connection portion; in this embodiment, the external thread 111 is used as an example for description. It should be noted that the contact plane portion 112 is located between the stop portion 13 and the external thread 111 and is connected to each other.
[0020] The assembly 7 may be a hollow body with a hollow portion 71, such as a hollow ring of a nut, which is not limited in this application. The inner periphery of the assembly 7 (without component symbol) has an inner connection portion that can be assembled with the aforementioned outer connection portion (which may be an external thread 111). Therefore, the inner connection portion may be an internal thread 72 that can be screwed with the external thread 111.
[0021] During assembly, the connector 1 is first inserted into the mounting hole 9 with the insertion end 14 of the metal shell 1a inserted in a direction opposite to the insertion direction. When fully inserted, the stop 13 is positioned on the inner side 93 of the panel 900. At this point, only the stop 13 is located on the inner side 93 of the entire connecting device 100, while the metal shell 1a, along with its insertion end 14, protrudes from the outer side 94. Next, the waterproof gasket 3 is fitted onto the metal shell 1a, so that the waterproof gasket 3 surrounds the outer peripheral surface 11. Finally, the assembly 7 is screwed onto the external thread 111 of the metal shell 1a along the insertion direction using its internal thread 72, and the waterproof gasket 3 is pushed forward towards the contact surface 112. This causes the waterproof gasket 3 to be clamped between the assembly 7 and the outer side 94 of the panel 900, thereby creating a waterproof effect. This prevents moisture or liquids from outside the outer side 94 from seeping into the inner side 93 from between the outer peripheral surface 11 of the metal shell 1a and the inner peripheral wall 91 of the panel 900. It should be noted that at this time, the assembly 7, together with the stop portion 13, clamps the panel 900 via the waterproof gasket 3.
[0022] In this way, such as Figure 3 and Figure 4 As shown, in addition to contacting the panel 900 via the stop portion 13, allowing the two to conduct through contact and thus providing preliminary EMI / EMC (Electromagnetic Interference / Electromagnetic Compatibility) protection, the metal shell 1a in this application can also be attached to the inner peripheral wall 91 via its contact plane portion 112, allowing the two to conduct through contact as well. This significantly increases the contact area between the metal shell 1a and the panel 900, thereby providing even better EMI / EMC protection. Of course, to increase the contact area between the panel 900 and the contact plane portion 112, the length of the contact plane portion 112 in the insertion direction can be increased, and the thickness of the panel 900 or the thickness of the panel 900 near the mounting hole 9 can also be increased.
[0023] It should be noted that the stop portion 13 of the metal shell 1a has a stop surface 131, which is a contact plane, so as to make a plane-to-plane contact with the outer side surface 94 of the panel 900, thus increasing the contact area between the metal shell 1a and the panel 900.
[0024] Preferably, the connecting device 100 of this application further includes a crimping ring 5, which is a hollow ring with a hollow portion 51. During assembly, the crimping ring 5 also surrounds the outer peripheral surface 11 and is located between the waterproof gasket 3 and the assembly 7, so that during the screwing process, the assembly 7 can indirectly push the waterproof gasket 3 towards the contact surface 112 via the crimping ring 5. The crimping ring 5 also has a bevel 52 corresponding to the inner edge of its hollow portion 51, and the crimping ring 5 uses its bevel 52 to crimp the waterproof gasket 3. Furthermore, as... Figure 3 As shown, the inclined surface 52 is inclined from the outer peripheral surface 11 towards the aforementioned inner peripheral surface and from the clamping end 15 towards the insertion end 14. This causes the waterproof gasket 3 to be subjected not only to a clamping force parallel to the insertion direction, but also to a component force that compresses the waterproof gasket 3 from the outer peripheral surface 11 towards the inner peripheral surface. In other words, the waterproof gasket 3 is clamped between the inclined surface 52, the contact plane portion 112, and the outer surface 94 of the panel 900. Therefore, the waterproof effect is better when the crimping ring 5 with the inclined surface 52 is added to this application.
[0025] In order to smoothly push the crimping ring 5 to crimp the waterproof gasket 3, such as Figure 3 and Figure 4 As shown, the adjacent parts between the assembly 7 and the crimping ring 5 can be respectively provided with a pushing surface 73 and a pushed surface 53 that are in contact with each other, so that the assembly 7 can smoothly push the pushed surface 53 of the crimping ring 5 together towards the contact plane 112 with its pushing surface 73; at the same time, since it is the flat pushing surface 73 that pushes the flat pushed surface 53, it does not affect the slope of the inclined surface 52 relative to the contact plane 112, and also ensures the waterproof effect.
[0026] To prevent the crimping ring 5 and / or the waterproof washer 3 from rotating when the assembly 7 rotates and pushes the crimping ring 5 and the waterproof washer 3, such as... Figure 2 As shown, a cross-sectional plane 16 can be formed at one point on the outer peripheral surface 11, and a straight section 521 corresponding to the cross-sectional plane 16 is provided on the inner edge of the crimping ring 5, so that the crimping ring 5 cannot rotate relative to the metal shell 1a because the straight section 521 is flat against the cross-sectional plane 16. Preferably, the shape of the waterproof gasket 3 can also further correspond to the outer peripheral surface 11 with the cross-sectional plane 16, so that the waterproof gasket 3 has a straight section 31 corresponding to the cross-sectional plane 16. In this way, the waterproof gasket 3 can be even less able to rotate relative to the metal shell 1a because the straight section 31 is against the cross-sectional plane 16, thereby ensuring that the waterproof gasket 3 will not be deformed by the assembly 7 and can be waterproofed normally.
[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A connecting device with an increased contact area function, for fixing to a mounting hole on a panel, the panel having an inner peripheral wall corresponding to the mounting hole, characterized in that, The connecting device includes: A connector includes a metal shell having an outer peripheral surface with a stop portion protruding from the outer peripheral surface. The outer peripheral surface is further divided into an outer assembly portion and a contact plane portion located between the stop portion and the outer assembly portion. The stop portion has a stop surface that abuts against one side of the panel. A waterproof gasket, surrounding the outer peripheral surface; and An assembly is a hollow body and has an inner assembly that can be assembled with the outer assembly. The assembly is assembled with the metal shell, and the waterproof gasket is sandwiched between the assembly and the other side of the panel. The assembly clamps the panel together with the stop via the waterproof gasket, and the metal shell is additionally attached to the inner peripheral wall by the contact plane portion.
2. The connecting device having a contact area increasing function according to claim 1, characterized by, It also includes a crimping ring that surrounds the outer peripheral surface and is located between the waterproof gasket and the assembly, the assembly pushing the waterproof gasket to be clamped via the crimping ring.
3. The connecting device having a contact area increasing function according to claim 2, characterized by, The inner edge of the crimping ring forms an inclined surface, and the crimping ring presses the waterproof gasket with the inclined surface.
4. The connecting device having a contact area increasing function according to claim 3, wherein The metal shell is a hollow shell with a plug-in end and a clamping end facing each other. The metal shell has a stop portion protruding from the clamping end. The metal shell also has an inner circumferential surface relative to the outer circumferential surface. The inclined surface is inclined from the outer circumferential surface toward the inner circumferential surface and from the clamping end toward the plug-in end.
5. The connecting device having a contact area increasing function according to claim 2, wherein The assembly has a pushing surface, the crimping ring has a pushed surface, and the assembly pushes the pushed surface with the pushing surface.
6. The connecting device with increased contact area function according to claim 2, characterized in that, A cross-section is formed at one point on the outer peripheral surface, and the inner edge of the crimping ring has a straight section that is flat against the cross-section.
7. The connecting device having a contact area increasing function according to claim 6, wherein The shape of the waterproof gasket corresponds to the outer peripheral surface on which the cross-sectional plane is formed.
8. The connecting device having a contact area increasing function according to claim 1, wherein The stop surface is a contact plane.
9. The connecting device having a contact area increasing function according to claim 1, wherein The outer assembly and the inner assembly are respectively an external thread and an internal thread that can be screwed into each other, and the assembly moves toward the stop via screwing the metal shell.