CN2766489Y - A connection mechanism capable of preventing electromagnetic waves from leaking out - Google Patents

Abstract

The utility model discloses a connection mechanism capable of preventing electromagnetic waves from leaking outwards, which is mainly composed of a connection member and two top abutment sheets, wherein the two sides of the connection member have positioning ends that can clamp a plug-in motherboard to fix it in the connection mechanism, and the upper and lower sides each have a groove to set a top abutment sheet, and when the connection member is close to the connection interface of the electronic device, the top abutment sheet will be deformed by the abutment of the two to compensate for the tolerance caused by the design between the two, thereby preventing electromagnetic waves from leaking out of the tolerance, and the positioning ends made of metal material can be used to prevent electromagnetic waves from leaking out from the two sides. In this way, the problem of assembly interference caused by installing an annular conductive foam in the existing connection mechanism device can be improved, and the cost of the connection mechanism can be reduced.

Description

A connection mechanism capable of preventing electromagnetic waves from leaking out

technical field

The utility model relates to a connection mechanism, in particular to a connection mechanism capable of reducing electromagnetic wave leakage.

Background technique

Most of the existing electronic devices are designed to minimize the generation and leakage of unstable leakage currents and electromagnetic waves, so as to pass the requirements of various international safety regulations and protect users from damage caused by leakage currents and electromagnetic waves.

Therefore, when the electronic device is designed, the leakage current will be diverted to the ground or the shielding method will be used to prevent the two from connecting the interface to the plug-in motherboard (such as the blade motherboard of the blade server, the display card) The connection mechanism ( Leakage in the tolerance gap between the assembly interface).

Please refer to FIG. 1A, FIG. 1B and FIG. 1C, the three-dimensional exploded view and assembly diagram of the existing connecting mechanism for preventing electromagnetic wave leakage, wherein FIG. 1A is a perspective view of the first connecting mechanism; FIG. 1B is the second connecting mechanism 3D exploded view; and FIG. 1C is a schematic diagram of assembly of the second connection mechanism.

Please refer to the first connection mechanism shown in Figure 1A. This connection mechanism utilizes the shielding effect of metal to prevent electromagnetic waves from leaking out. An annular stopper 12 made of metal material is added to the outer edge of the side), and the annular stopper 12 can shield the gap between the connection interface (not shown in the figure) of the electronic device and the connection mechanism 10, so as to reduce the leakage of electromagnetic waves situation.

However, due to the tolerance allowed in the design of the mechanism product, there is still a gap between the annular limiting piece 12 and the connection interface, so it is impossible to completely prevent the leakage of electromagnetic waves.

In order to solve the above-mentioned situation, the second connection mechanism uses conductive foam that can shield electromagnetic waves to increase the prevention of electromagnetic wave leakage. Please refer to the second connection mechanism shown in FIG. 1B , as shown in the figure, the connection mechanism 20 utilizes the ring-shaped conductive foam 24 disposed on the side of the ring-shaped limiting piece 22 and the connection interface to fill the above-mentioned tolerance gap.

Please refer to the assembly schematic diagram shown in FIG. 1C again. When the connecting mechanism 20 will be pressed against the connecting interface 30 of the electronic device (not shown in the figure) during assembly, the annular conductive foam 24 will be connected by the connecting interface 30 and The deformation of the ring-shaped limiting piece 22 due to the abutment causes the connection mechanism 20 and the connection interface 30 to form a close contact state, so as to make up the tolerance gap between the two, thereby achieving the effect of shielding electromagnetic waves.

However, using this method of preventing electromagnetic waves, the size of the connection mechanism 20 with the annular conductive foam 24 attached needs to be slightly larger than the size of the connection interface 30 so that the annular conductive foam 24 can be pushed against by both to achieve the compensation effect. Therefore, when the connection mechanism 20 is close to the connection interface 30 (during assembly), the four sides of the annular conductive foam 24 protrude from the connection interface 30, so it is not easy to penetrate into the connection interface 30 at the same time and be pushed against, thus causing assembly The situation that the interference affects the assembly efficiency often occurs.

In addition, adding the ring-shaped limiting piece and the ring-shaped conductive foam to the connecting mechanism will increase the cost of the connecting mechanism and is very wasteful. Therefore, how to reduce the assembly interference caused by the conductive foam and reduce the cost of the connection mechanism is the focus of designers when designing.

Utility model content

In view of the above problems, the utility model provides a connection mechanism applied on a plug-in mainboard that can reduce interference during assembly and prevent electromagnetic waves from leaking out.

The connection mechanism provided by the utility model, which can prevent electromagnetic waves from leaking out, mainly includes a connecting piece and two abutting pieces. The connecting part has a connecting part and two positioning ends, and a groove is respectively opened on the upper side and the lower side of the connecting part; and the two positioning ends stand parallel to the two sides of the connecting part to hold the plug-in motherboard It is fixed in the connection mechanism and can prevent electromagnetic waves from leaking from both sides of the connection part; the two abutting pieces are respectively arranged in the upper and lower grooves.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

Figure 1A is a perspective view of the first connection mechanism;

Fig. 1B is a three-dimensional exploded view of the second connection mechanism;

Figure 1C is a schematic diagram of the assembly of the second connection mechanism;

Fig. 2 is the combination schematic diagram of the present utility model;

Fig. 3 is a three-dimensional exploded view of a preferred embodiment of the present invention;

Figure 4A is a diagram of the implementation of the abutting portion; and

Fig. 4B is a diagram of the implementation of perforation.

Among them, reference signs:

Connection mechanism 10

Ring limiter 12

Connection mechanism 20

Ring limiter 22

Conductive foam 24

Connection interface 30

Connection mechanism 100

Connector 110

Connecting part 112

Positioning end 114, 114’

Groove 116, 116’

Contact part 120

Limiting part 122

Dimples 124

Perforation 130

Card firmware 132

Fitting part 140

Two tops 150, 150’

Plug-in motherboard 200

Positioning hole 202

Connection interface 300

Detailed ways

Please refer to the assembly diagram of the present invention shown in FIG. 2 , which shows the situation of using the connection mechanism 100 to fix the plug-in motherboard 200 to the connection interface 300 of the electronic device (not shown in the figure).

Generally, the plug-in motherboard 200 has at least one positioning hole 202 , and the plug-in motherboard 200 can be firmly fixed on the connection mechanism 100 through the positioning hole 202 and the fixing member on the connection mechanism 100 .

In addition, the connection interface 300 can be arranged on the host body structure of the electronic device, so when the connection mechanism 100 is stuck in the connection interface 300, it can be held on the host body structure of the electronic device.

In general applications, the plug-in motherboard 200 can be a blade motherboard of a blade server, a display card, a sound card, and the like. The size of the connection interface 300 is slightly larger than the connection mechanism 100 so that the connection mechanism 100 can be stuck therein.

Please refer to the three-dimensional exploded view of the preferred embodiment of the utility model shown in FIG. 3 to illustrate the components of the connecting mechanism 100, which are mainly composed of a connecting piece 110 and two abutting pieces 150, 150'. The detailed descriptions are as follows :

The connector 110 includes a connecting part 112 and positioning ends 114, 114', wherein the upper side and the lower side of the connecting part 112 are respectively provided with grooves 116, 116'; and the positioning ends 114, 114' stand parallel to the connecting part 112 The two sides are used to hold the plug-in motherboard 200 (not shown in the figure) to be fixed in the connection mechanism 100 and prevent electromagnetic waves from leaking from the two sides of the connection part 112 .

In actual use, the positioning ends 114, 114' are L-shaped, which can be formed on both sides of the connecting member 110 by means of integral forming, stamping, welding, riveting, and the like.

In addition, the plug-in motherboard 200 can be fixed on the connection mechanism 100 by providing an abutting portion or a through hole on the positioning end 114 or 114'. The method for fixing the plug-in motherboard 200 in the connection mechanism 100 will be described below through the implementation diagram of the abutting portion shown in FIG. 4A and the implementation diagram of the through hole shown in FIG. 4B .

Please refer to FIG. 4B first. The abutting portion 120 has a limiting portion 122 and a recess 124. When the plug-in motherboard 200 (not shown in the figure) is stressed, the positioning hole 202 slides through the limiting portion 122. When moving to the recess 124 , the limiting portion 122 will provide a limiting force to the positioning hole 202 of the plug-in motherboard 200 to prevent it from coming out upwards, so that the plug-in motherboard 200 is fixed in the connecting mechanism.

Please refer to the perforation 130 shown in FIG. 4A again. When the positioning end 114 or 114' utilizes the perforation 130 to fix the plug-in motherboard 200 in the connection mechanism 100, the through-hole 130 and the plug-in motherboard will pass through a The positioning holes 202 of the 200 are fastened with the fastening members 132 to fix the plug-in motherboard 200 in the connection mechanism.

In actual application, the fastening member 132 is a screw or a tenon. When the fastening member 132 is a screw, the through hole 130 and the positioning hole 202 of the plug-in mainboard 200 can be provided with internal threads for engaging with the external threads of the screws to increase the fixing effect.

In addition, when the connection mechanism 100 and the connection interface 300 of the electronic device are abutted against each other until the connection interface 300 abuts to the bottom of the abutment portion 140 of the positioning end 114 or 114', the connection mechanism 100 can be kept in an appropriate abutment position , the abutment position refers to a position where the plug-in motherboard 200 can maintain electrical connection with the electronic device.

The two abutting pieces 150, 150' are disposed in the grooves 116, 116' of the connector 110 respectively. Wherein the abutment sheet 150, 150' is arranged in the groove 116, 116' by an adhesive, and the adhesive can be double-sided tape or any other material that can keep the abutment sheet 150, 150' in the groove 116, 116 ' in the medium.

In actual use, the abutting sheets 150, 150' are conductive foams that can prevent electromagnetic waves from penetrating, or anything that is a little deformed by the abutment of the connecting piece 110 and the connecting interface 300 and shrinks between the two. The gap between the two is filled, and a medium that prevents electromagnetic waves from penetrating is required.

The number of the abutting portion 120, the through hole 130 and the fixing member 132 in the preferred embodiment of the present utility model is not limited, at least one of them needs to be kept so that the plug-in motherboard 200 is fixed on the connection mechanism 100. .

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (13)

1. A connection mechanism capable of preventing electromagnetic waves from leaking out, installed between a plug-in main board and a connection interface of an electronic device, characterized in that it includes: A connecting piece has a connecting part and two positioning ends, the upper side and the lower side of the connecting part are respectively provided with a groove; the positioning ends stand parallel to the two sides of the connecting part and hold the plug-in host board, the plug-in main board is fixed on the connection interface; and Two abutting pieces are separately arranged in each of the grooves; Wherein, the connecting piece is forced to maintain an abutment position with the connection interface. In the abutment position, the connection piece and the connection interface abut against the abutment piece, and the deformed abutment piece shrinks to the connection. A gap between the component and the connection interface. 2. The connecting mechanism according to claim 1, wherein the positioning end is formed on both sides of the connecting member by integral forming, stamping, welding or riveting. 3. The connecting mechanism according to claim 1, wherein the positioning end is a metal positioning end that can prevent electromagnetic waves. 4. The connection mechanism according to claim 1, wherein the abutment position refers to a position where the plug-in motherboard and the electronic device can be electrically connected. 5. The connecting mechanism according to claim 1, wherein the positioning end has an abutting portion for keeping the connecting member at the abutting position. 6. The connecting mechanism according to claim 1, wherein one of the positioning ends has an abutting portion, which engages with a positioning hole of the plug-in main board, and the plug-in main board It is fixed in the connecting mechanism through the abutting portion. 7. The connecting mechanism according to claim 1, wherein one of the positioning ends has a through hole, and the plug-in motherboard is fixed in the connecting mechanism through the through hole. 8. The connecting mechanism according to claim 7, wherein the through hole is fixed to the positioning hole of the plug-in main board through a fastener, and the plug-in main board is fixed to the in the connection mechanism. 9. The connection mechanism according to claim 8, wherein the fastening member is a screw. 10. The connection mechanism according to claim 8, characterized in that the fastening member is a tenon. 11. The connecting mechanism according to claim 1, characterized in that, the resisting piece is conductive foam that can prevent electromagnetic waves from penetrating. 12. The connection mechanism according to claim 1, wherein the abutting piece is disposed in the groove by an adhesive. 13. The connecting mechanism according to claim 12, wherein the sticky object is a double-sided adhesive tape.

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