Plug grounding washer and connection structure

Abstract

To provide a plug grounding washer capable of reducing a risk of occurrence of a malfunction of a communication device due to a connection failure at a connection point, and a connection structure using the plug grounding washer.SOLUTION: According to another aspect of the present invention, there is provided a plug grounding washer for grounding an outer conductor of a plug and a ground of a member other than the plug, including: a locking portion locked to an outer periphery of the outer conductor; and a ground connection portion erected from the locking portion toward a distal end direction of the outer conductor and connected to the ground. The locking portion includes a contact portion that contacts the outer periphery of the outer conductor when the locking portion is locked to the outer conductor. A connection structure of the present invention is a connection structure of a contact plug and a member other than the contact plug using the contact plug earth washer of the present invention, in which the locking portion of the contact plug earth washer is locked to an outer conductor of the contact plug, the contact portion of the contact plug earth washer contacts an outer circumference of the outer conductor, and a ground connection portion of the contact plug earth washer is electrically connected to a ground of the member other than the contact plug.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a connector earth washer for connecting a connector of an electronic device to the ground of a component other than the connector for earthing, and to a connection structure using the connector earth washer. [Background technology]

[0002] The housings of various communication devices that handle high-frequency signals are provided with connectors. When a connector is provided on a housing, the connector is usually connected to the ground of a component other than the connector (for example, a circuit board mounted inside the housing) to provide an earth, in order to reduce electromagnetic interference and ensure safety.

[0003] BACKGROUND ART Conventionally, as a means for connecting a connector of an electronic device to the ground of a component other than the connector for earthing, a connection spring that is pressed against a conductor chassis for contact to establish earthing is known (Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-37010 Summary of the Invention [Problem to be solved by the invention]

[0005] The invention described in Patent Document 1 fixes the dielectric substrate and the conductor chassis with the connection spring pressed against the conductor chassis. If the connection spring is not pressed against the conductor chassis sufficiently, or if the dielectric substrate and the conductor chassis are not fixed sufficiently, there is a risk of poor contact between the connection spring and the conductor chassis.

[0006] The present invention has been made in consideration of these circumstances, and the problem to be solved is to provide a plug earth washer that is less likely to cause poor contact and can reduce the risk of malfunctions caused by poor contact, and a connection structure using said plug earth washer. [Means for solving the problem]

[0007] [Connector earth washer] The connector earth washer of the present application is a washer for connecting the external conductor of a connector to the ground of a component other than the connector to establish earth, and is provided with a locking portion that locks onto the outer periphery of the outer conductor, and a ground connection portion that stands from the locking portion toward the tip of the outer conductor and is connected to the ground, and is provided with a contact piece that comes into contact with the outer periphery of the outer conductor when the locking portion locks onto the outer conductor.

[0008] The contact portion may have a spring property so as to be deformable by contact with the outer conductor, and the locking portion may have an inner hole having an inner diameter large enough to insert the outer conductor therethrough.

[0009] The contact portion may be provided so as to protrude inward beyond the periphery of the inner hole of the locking portion.

[0010] [Connection structure] The connection structure of the present application is a connection structure between a connector and a member other than a connector using the connector earth washer of the present application, in which the locking portion of the connector earth washer is locked to the external conductor of the connector, the contact portion of the locking portion contacts the outer periphery of the external conductor, and the ground connection portion of the connector earth washer is electrically connected to the ground of the member other than the connector. [Effects of the Invention]

[0011] The plug earth washer of the present invention is provided with a locking portion that locks onto the outer conductor of the plug, making it easier to ensure connection with the outer conductor and reducing the risk of malfunctions due to poor connection. [Brief explanation of the drawings]

[0012] [Figure 1] (a) is an explanatory diagram of the state in which the connector earth washer is attached to the outer conductor of the connector, and (b) is an enlarged view of (a). [Figure 2] FIG. 10 is a perspective view showing an example of a connector earth washer. [Figure 3] (a) is a front view of the connector with the earth washer attached to the outer conductor of the connector, (b) is a plan view of (a), and (c) is a right side view of (a). [Figure 4] 10(a) to 10(f) are explanatory diagrams showing an example of a procedure for connecting a connector earth washer to a board. DETAILED DESCRIPTION OF THE INVENTION

[0013] (Embodiment) An example of a connector grounding washer 10 of the present invention will be described with reference to the drawings. As shown in Figures 1(a) and 1(b), the connector grounding washer 10 of this embodiment is used to connect the outer conductor C1 of a connector C provided in a housing B of a communication device A to a board D mounted within the housing B for grounding.

[0014] As an example, the connector earth washer 10 shown in Fig. 2 has a locking portion 11 that locks onto the outer periphery of the outer conductor C1 of the connector C, a contact portion 12 that contacts the outer periphery of the outer conductor C1, and a ground connection portion 13 that is connected to the board D. The locking portion 11, contact piece 12a, and ground connection portion 13 are made of a single thin plate material. The connector earth washer 10 can also be made up of two or more parts.

[0015] The locking portion 11 in this embodiment is an annular member (ring-shaped member) having an inner hole 14 (i.e., a hole with a diameter larger than the outer diameter of the outer conductor C1) with an inner diameter that allows the outer conductor C1 of the connector C to be inserted through, and a contact portion 12 that contacts the outer periphery of the outer conductor C1 is provided inside the periphery 14a of the inner hole 14 (hereinafter referred to as the "inner hole periphery").

[0016] The contact portion 12 in this embodiment is composed of a plurality of rectangular contact pieces 12a in front view. The contact pieces 12a are provided at multiple locations with intervals between them on the circumferentially inner side of the inner hole periphery 14a of the locking portion 11. The contact pieces 12a are made of a thin plate material that is flexible and elastic (springy).

[0017] In this embodiment, ten contact pieces 12a are used as an example, but the number of contact pieces 12a may be more or less than this. Also, the shape of the contact pieces 12a is not limited to rectangular, but may be trapezoidal, triangular, rounded at the tip, or the like.

[0018] In this embodiment, the diameter of the imaginary circle VC formed when the tip ends of each contact piece 12a shown by dotted lines in Figure 2 are connected is made smaller than the outer diameter of the outer conductor C1, so that when the locking portion 11 is locked to the outer periphery of the outer conductor C1, the contact piece 12a is deformed toward the tip end of the outer conductor C1.

[0019] When a male thread is formed on the outer periphery of the outer conductor C1, each contact piece 12a deforms toward the tip of the outer conductor C1 while contacting the male thread, and contacts the outer periphery of the outer conductor C1 at a position where it fits into the valley of the male thread, a position beyond the valley, a position just before the valley, etc.

[0020] In this way, in the plug earth washer 10 of this embodiment, by attaching the locking portion 11 to the external conductor C1, the multiple contact pieces 12a come into contact with (are electrically connected to) the outer periphery of the external conductor C1, so there is no need to solder to connect the external conductor C1 and the locking portion 11.

[0021] Therefore, the connector earth washer 10 of this embodiment not only improves workability, but also reduces the risk of connector malfunctions due to variations in quality caused by the level of soldering proficiency and thermal deformation that can occur during soldering, for example, due to the effects of heat generated during soldering.

[0022] The ground connection part 13 is a part that is connected to the ground of a member other than the outer conductor C1. In this embodiment, the ground connection part 13 is elongated and protrudes perpendicularly or approximately perpendicularly toward the outer surface of the locking part 11 (the surface that faces outward when attached to the outer conductor C1).

[0023] In this embodiment, two ground connection portions 13 are provided at the center or approximately the center in the height direction of the locking portion 11. The two ground connection portions 13 are provided parallel or approximately parallel to each other. The ground connection portions 13 may be provided at other locations.

[0024] In this embodiment, an example is shown in which there are two ground connection portions 13, but there may be more or fewer ground connection portions 13. Furthermore, the ground connection portion 13 is not limited to having an elongated tip, and the tip may be trapezoidal, triangular, or the like.

[0025] The ground connection part 13 is electrically connected and earthed by being soldered to the substrate D. Note that the ground connection part 13 and the substrate D can also be connected by a method other than soldering, such as by screw fastening or spring contact.

[0026] 3(a) to 3(c) show the state in which the connector earth washer 10 is engaged with the outer conductor C1 of the connector C. In this state, the contact piece 12a deforms toward the tip of the outer conductor C1 due to contact with the male thread of the outer conductor C1, and comes into contact with the outer periphery of the outer conductor C1 at positions where it fits into the root of the male thread, at positions beyond the root, and at positions just before the root, thereby achieving multi-point contact.

[0027] Next, the procedure for connecting the connector ground washer 10 of this embodiment to the substrate D will be described with reference to Figures 4(a) to 4(f). When the connector ground washer 10 of this embodiment is used, grounding can be achieved through (1) attaching the connector ground washer 10 to the connector C and (2) attaching the ground connection part 13 to the substrate D.

[0028] (1) Attaching the earth washer to the connector When attaching the connector earth washer 10 to the connector C, as shown in Figures 4(a) to (d), the connector C is placed on the outside of the metal plate E of the housing B (Figures 1(a) and (b)) and the connector earth washer 10 is placed on the inside, and the outer conductor C1 of the connector C is inserted into the inner hole E1 of the metal plate E, and the connector earth washer 10 is engaged with the outer conductor C1 protruding from the opposite side of the metal plate E.

[0029] (2) Mounting the ground connection part to the board After completing the above step (1) and attaching the connector earth washer 10 to the connector C, check the position of the ground connection part 13 and then connect the ground connection part 13 to the connection point of the board D by soldering, as shown in Figures 4(e) and 4(f).

[0030] When the connector earth washer 10 of this embodiment is used, the connection structure between the connector C and the substrate D is such that a locking portion 11 is attached to the outer periphery of the outer conductor C1 of the connector C, one or more contact pieces 12a of the locking portion 11 contact the outer conductor C1, and the ground connection portion 13 of the locking portion 11 is connected to the substrate D by soldering.

[0031] The configuration of the connector ground washer 10 described in this embodiment is an example, and the configuration of the connector ground washer 10 of the present invention is not limited to the configuration of this embodiment. The connector ground washer 10 of the present invention can be modified in various ways, such as omission, replacement, or addition of components, as long as the intended purpose can be achieved. As an example, the following modified examples are possible.

[0032] -Variation 1- In the above embodiment, the locking portion 11 is shaped like a circular ring, but the locking portion 11 does not have to be shaped like a ring as long as it can be locked onto the outer conductor C1 of the connector C.

[0033] -Variation 2- In the above embodiment, the connector earth washer 10 is made of a thin plate material, but the connector earth washer 10 can also be made of a material other than a thin plate material.

[0034] -Variation 3- In the above embodiment, both the inner and outer peripheries of the locking portion 11 are circular, but the inner periphery may be a shape other than circular as long as it does not accidentally come off the outer conductor C1. There are fewer restrictions on the shape of the outer periphery than on the inner periphery, and any shape can be used as long as it does not interfere with other components.

[0035] -Variation 4- In the above embodiment, the contact pieces 12a have the same length (protrusion length), but the contact pieces 12a may have different lengths. In this case, all of the contact pieces 12a may have different lengths, or some of the contact pieces 12a may have different lengths.

[0036] -Variation 5- In the above embodiment, the case where the plurality of contact pieces 12a are provided at equal intervals is taken as an example, but the contact pieces 12a do not have to be provided at equal intervals. [Industrial Applicability]

[0037] The present invention is particularly suitable for use as a component for connecting connector C of various communication devices that handle high-frequency signals (for example, CATV devices equipped with an F-type connector) to the ground of a component other than connector C for earthing. [Explanation of symbols]

[0038] 10 Connector earth washer 11 Locking part 12 Contact part 12a Contact piece 13 Ground connection 14 Inner hole 14a periphery (inner hole periphery) A Communication equipment B chassis C Plug C1 outer conductor D board E Sheet metal E1 inner hole VC Virtual Circle

Claims

1. A washer for connecting the outer conductor of a connector to the ground of a component other than the connector to obtain earthing. a locking portion that is locked to an outer periphery of the outer conductor; a ground connection portion extending from the locking portion toward a tip end of the outer conductor and connected to the ground; the locking portion includes a contact portion that comes into contact with an outer periphery of the outer conductor when the locking portion is locked to the outer conductor, A plug earth washer characterized by:

2. The plug earth washer according to claim 1, the contact portion has a spring property that allows it to be deformed by contact with the outer conductor; A plug earth washer characterized by:

3. The plug earth washer according to claim 1, the locking portion has an inner hole having an inner diameter large enough to insert the outer conductor therethrough; A plug earth washer characterized by:

4. The plug earth washer according to claim 3, The contact portion is provided so as to protrude inward beyond the periphery of the inner hole of the locking portion. A plug earth washer characterized by:

5. A connection structure for connecting a connector and a member other than the connector using the connector earth washer according to any one of claims 1 to 4, The locking portion of the earthing washer is locked to the outer conductor of the connector, The contact portion of the plug earth washer contacts the outer periphery of the outer conductor, The ground connection portion of the plug earth washer is electrically connected to the ground of a member other than the plug. A connection structure characterized by:

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