KR200316828Y1 - Socket assembly with elastic contact structure - Google Patents

Abstract

The present invention provides an insulating plate housing having a plurality of connection passages, a contact portion provided with a base and a contact protrusion and provided at both inlets in the connection passage of the insulation plate housing so that the contact protrusion is electrically connected to the external connection member, and between the contactor. And an installed conductive elastic means, wherein the inlet of the connection passage is smaller than the width of the inside of the passage and is formed to a width such that the contact protrusion of the contact can be smoothly inserted.

Description

Socket assembly with elastic contact structure {SOCKET ASSEMBLY WITH ELASTIC CONTACT STRUCTURE}

The present invention relates to a socket assembly, and more particularly to a socket assembly of an elastic contact structure that is excellent in contact stability and can prevent contamination of the contact.

The socket assembly for stable electrical connection typically provides a pin-type contactor in the insulating housing to make electrical connection with the connecting object through contact with the contactor during electrical connection of the socket assembly. At this time, the structure of the contactor and the arrangement of the contactor greatly affect the stability of the electrical connection and the contamination of the contactor by the foreign matter.

EP 1 111 977 A1 discloses such a socket assembly, the specific configuration of which is shown in FIG. 1.

The illustrated socket assembly comprises an insulating plate 1 having a connection passage 2 with a coupling protrusion 1a formed therein and a “C” type contactor 3 engaged in a coupling protrusion in the connection passage, the contactor ( 3) is provided with the nose 3a of the free end side which contact | connects the conductive parts 4a and 5a of the external connection members 4 and 5, and the leaf | plate spring part 3b intermediate.

According to this configuration, when the nose 3a of the contactor 3 protruding out of the connection passage is pressed against the conducting portions 4a, 5a of the external connection member in close contact with the external connection members 4, 5, The elasticity of the intermediate leaf spring portion 3b achieves electrical connection with the conductive portion.

However, such a socket assembly is difficult to assemble a "C" type terminal, which is a contactor, into an insulating plate, and foreign matter is likely to penetrate through the connecting passage, and when connected with an external connection member, the spring spring portion has a strong elasticity. This may damage both the conductive portion and the nose of the external connection member. At this time, the "C" type terminal coupled to the projection in the connection passage is likely to be misaligned or detached, which may cause a poor electrical connection. There are several disadvantages.

An object of the present invention is to provide a socket assembly of an elastic contact structure that is easy to install and install, to prevent contamination by foreign matters, and to achieve a stable electrical connection to solve the problems of the prior art.

1 is a cross-sectional view of a socket assembly of the prior art.

2 is a plan view of the socket assembly of the present invention.

3 is a cross-sectional view taken along the line X-X of FIG.

FIG. 4 is an enlarged view of a portion "A" of FIG. 3.

5A and 5B are sectional views showing the top view of the contactor and the state where the contactor is disposed in the connection passage, respectively.

6A and 6B are a plan view and a cross-sectional view of the contactor and the connection passage of another embodiment of the contactor and the connection passage shown in FIGS. 5A and 5B, respectively.

7A and 7B are respectively a plan view and a sectional view when the contactor of FIG. 6A is disposed in the connection passage of FIG. 6B, and a plan view showing a state in which the contactor is flow suppressed in this state.

8A is a view showing a state in which the external connection member is not completely mounted to the socket assembly in the configuration of the embodiment of Figs.

FIG. 8B is a view showing a state in which the external connection member is completely mounted in the configuration of the embodiment of FIGS. 6 and 7.

<Explanation of symbols for the main parts of the drawings>

10: upper insulation plate housing

15: connection passage

15a: Flow preventing projection of the connecting passage

20: lower insulation plate housing

30: coil spring

40: contactor

41: base of contact

41a: groove in base

43: contact projection of contact

50,60: external connection member

55,65: conductive portion of the external connection member

In order to achieve the above object, the present invention provides an insulated plate housing having a plurality of connection passages, a base and a contact protrusion, and both ends of the inlet in the connection passage of the insulating plate housing such that the contact protrusion is electrically connected to the external connection member. And a contact elastic member provided between the contactor and the conductive elastic means provided between the contactors, wherein the inlet of the connection passage is smaller than the width of the inside of the passage and is formed to a width such that the contact protrusion of the contact can be inserted smoothly. To provide.

According to one embodiment of the present invention, the base of the contact is made of a cylindrical, characterized in that the contact protrusion protrudes in the center of the base.

According to an embodiment of the present invention, one or more flow preventing protrusions for preventing flow of the contactor and the conductive elastic means are formed around the inner wall of the connection passage, and the base of the contact corresponds to the shape of the flow preventing protrusion. It characterized by having a.

According to one embodiment of the present invention, the insulating plate housing is characterized in that consisting of the upper and lower housings corresponding to each other.

According to an embodiment of the present invention, the external connection member is characterized in that it comprises a DMD chip and a PCB substrate.

According to one embodiment of the present invention, the conductive elastic means is characterized in that the gold-plated coil spring.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 2 to 7.

FIG. 2 is a plan view of the socket assembly of the present invention, FIG. 3 is a cross-sectional view taken along the line X-X of FIG. 2, and FIG. 4 is an enlarged view of a circle ("A") portion of FIG.

Referring to the drawings, the socket assembly 100 includes an insulating plate housing having a plurality of connection passages 15 and a contact embedded within the connection passages.

The contactor of the socket assembly is an element that mediates electrical connection with the chip and the substrate when the DMD (Digital Micromirror Device) chip and the PCB substrate are applied to the socket assembly.

The insulating plate housing may consist of upper and lower plate housings 10 and 20 having correspondingly arranged connection passages, and contactors 40 are disposed at both ends of entrances of the connection passage 15 in the housing.

The contactor 40 is composed of the base 41 and the contact protrusion 43, and when the external connection member such as the DMD chip and the PCB substrate is applied, electrical contact with the external connection member is made through the contact protrusion portion.

The inlet of both ends of the connection passage 5 is smaller in width than the inside of the connection passage, and the size thereof is formed to such an extent that the contact projection of the contactor can be easily entered.

A conductive coil spring 30, which is an elastic means, is disposed between the contacts, and pushes the contacts disposed at both ends of the inside of the connection passage of the insulating plate housing in opposite directions so that the contact protrusions of the contacts protrude out through the connection passage inlet. do. Coil springs are preferably plated with gold to reduce contact resistance.

5A and 5B show an embodiment of the configuration of the contactor and the configuration of the connection passage in which the contactor is installed.

As shown in FIG. 5A, the contactor has a cylindrical base 41 and a contact protrusion 43 protruding upward in the center thereof, and as shown in FIG. 5B, the contact protrusion 43 is disposed in the hollow connection passage. It is arranged to protrude.

When the coil spring and the contactor supported by the coil spring are connected to the external connection member, contact flow may occur in the case of the contactor because there is no fixed support point, and in the case of the coil spring, flow may occur, and thus, the inner wall of the connection passage. A frictional resistance against is generated, which can lead to a decrease in the connection efficiency.

According to one embodiment of the present invention, to prevent this, as shown in Figures 6a and 6b, the inner wall of the connection passage is provided with a flow preventing projection (15a) in the circumferential direction, the base 41 of the contactor 40 ) May be formed to have a groove 41a of a shape corresponding to the flow preventing projection, and the contactor is disposed in the connection passage in accordance with the shape of the flow preventing projection.

The flow preventing protrusion is preferably provided in four directions perpendicular to each other.

As shown in FIGS. 7A and 7B, the contactor 40 installed in the connecting passage of the insulating plate housing is installed corresponding to the shape of the protrusion with the base 41 slightly spaced from the flow preventing protrusion 15a. Therefore, the contact is fixed even in the flow of connection with the external connection member in the direction of the arrow, and the coil spring is not in full contact with the inner wall of the connection passage, but only in the protruding portion, so that the contact resistance can be largely reduced, resulting in stable And ensure high efficiency electrical contact.

Such an electrical connection process with the external connection member is shown in Figs. 8A and 8B. FIG. 8A illustrates a state in which the external connection member is not completely attached to the socket assembly, and FIG. 8B illustrates a state in which the external connection member is fully mounted.

An external connection member 60 having a conductive layer 65, for example, a DMD chip, is mounted on the socket assembly, and an external connection member 50 having a conductive layer 55, for example, a PCB substrate is mounted on the bottom of the socket assembly. do.

In the state in which the external connection member is not attached to the socket assembly, the contactor 40 installed at both ends of the connection passage of the plate housing is protruded out of the plate housing by the elastic force of the coil spring 30. do. In this case, since the connection passage maintains the closed state rather than the open state with respect to the outside, foreign matters can be prevented from flowing through the connection passage.

In this state, when the external connecting members 60 and 50 are mounted from above and below the insulating plate housing, the contact protrusions 43 of the protruding contacts are pushed into the connecting passages, but the coil springs between the contacts 40 Due to the force protruding to the outside, stable and high efficiency electrical connection with the external connection member is ensured.

Due to the connection stability by such a coil spring, stable connection can be performed even if vibration or an impact is applied to the socket assembly.

According to the above-described configuration, the present invention provides a socket assembly of an elastic contact structure that is easy to install and install, can prevent contamination by foreign matters, and can achieve stable electrical connection.

Claims (6)

An insulating plate housing having a plurality of connection passages, a contact provided with a base and a contact protrusion provided at both ends of the inlet of the connection passage of the insulating plate housing so that the contact protrusion is electrically connected to the external connection member, and a conductive elastic provided between the contacts. And a means, wherein the inlet of the connecting passage is smaller than the width of the inside of the passage and is formed to a width such that the contact protrusion of the contact can be inserted smoothly. The socket assembly of claim 1, wherein the base of the contact has a cylindrical shape and a contact protrusion protrudes from the center of the base. According to claim 1, wherein the inner wall of the connection passage is formed with one or more flow preventing projections for preventing the flow of the contact and the conductive elastic means, the base of the contact having a groove corresponding to the shape of the flow preventing projections Socket assembly, characterized in that. The socket assembly of claim 1, wherein the insulating plate housing is formed of upper and lower housings corresponding to each other. The socket assembly of claim 1, wherein the external connection member comprises a DMD chip and a PCB substrate. 2. The socket assembly of claim 1 wherein the conductive resilient means is a gold plated coil spring.