JP2014057030A - Shield and thin display device - Google Patents

Abstract

The present invention provides a technique for appropriately ensuring contact of a shield with a terminal connector when a substrate is provided with a connector terminal and a shield is attached.
In a shield, a connector fixing portion is formed with a connector fixing portion that is bent inward at an outer edge portion of a connector opening. The connector fixing portion 40 includes a tongue-like base portion 42 and a tip convex portion 44 formed at the tip portion thereof. Here, the tip end portion of the base portion 42 is processed into a convex shape by drawing in the downward direction, that is, in the direction of the HDMI connector 60, and the tip convex portion 44 is formed.
[Selection] Figure 4

Description

  The present invention relates to a shield to which a terminal connector is fixed and a thin display device having such a shield and terminal connector.

  Generally, in the shield of the main board of the liquid crystal television, the top surface portions 121 and 221 of the shields 120 and 220 or the end portions of the top surface portions 121 and 221 are bent as in the shield substrate structure shown in FIGS. The connector fixing portions 140 and 240 formed by drawing) are joined so as to be pressed relatively near the top end of the top surface portion 162 of the HDMI connector 160, thereby achieving grounding.

  Various techniques have been proposed for such a grounding mode. For example, there is a technique in which a printed circuit board of an electronic device is screwed to a shield case without using a washer, and the printed circuit board is grounded and fixed (see, for example, Patent Document 1). Specifically, solder bumps are formed on the ground pattern on the periphery of the mounting hole on the back side of the printed circuit board, protrusions are formed on the peripheral edges of the screw holes in the shield case, and the protrusions are bitten into the solder bumps. A structure has been proposed in which the mounting screw is screwed into the screw hole.

  In addition, the base of the tongue formed on the side of the shield case is bent outwardly from the shield case, and conversely, the tip of the tongue holding the circuit board is bent inward. There is a technique for realizing fixing by pushing a piece into a circuit board after the circuit board is assembled (for example, see Patent Document 2). With this technique, the circuit board and the shield case are fixed without applying a load to the circuit board.

Japanese Patent Laid-Open No. Hei 6-238771 JP-A-6-188586

  By the way, the general shield shape has a structure in which the tip portion of the HDMI connector exists at a position where the shield member can be brought into contact with the shield top surface or the top surface end portion by bending (drawing). However, a so-called zero-fitting structure is adopted for the bending shield and the HDMI connector. However, there are problems such as variations in processing, contact area is small, impact or damage to the TV body during transportation, deformation of the contact part and displacement, and grounding may not be reliably taken, Improvement was desired.

  In the case where the RCA terminal units are arranged in the same row as the HDMI connector, the height of the shield is raised to the height of the RCA terminal unit. As a result, there has been a problem that the conventional structure for bending from the top surface of the shield or from the end of the top surface cannot be adopted for the joining structure with the HDMI connector.

  Further, for example, as shown in FIG. 10B, in the connector top surface portion 162 of the HDMI connector 160, a front side portion (right side portion in the drawing) from the front end of the connector fixing portion 140 is exposed to the outside. There is a possibility that the phenomenon of “electrostatic flying directly to the terminal portion” occurs, and improvement in electrostatic resistance has been demanded.

  In addition, the techniques disclosed in Patent Literature 1 and Patent Literature 2 cannot sufficiently cope with the above-described problems. In other words, the technique disclosed in Patent Document 1 is a structure intended to ensure the grounding of the screw fixing portion, and cannot be applied as it is to the above problem, and another technique has been demanded. Moreover, in the technique disclosed in Patent Document 2, it is necessary to bend the tongue piece in order to bring the shield and the terminal connector into contact with each other. It was sought after. In addition, depending on conditions, repeated bending work may occur during repair and the part may become fragile, and another technique is required.

  This invention is made | formed in view of the above situations, Comprising: It aims at providing the technique which solves the said subject.

An aspect of the present invention is a shield formed by a metal plate, an opening in which a terminal connector is disposed, and a tongue-like terminal fixing portion that is bent inside the opening and extends from the metal plate And a processed portion formed in the vicinity of the tip of the terminal fixing portion, and the processed portion is processed toward the side where the terminal connector is disposed.
Another aspect of the present invention is a thin display device having the shield and the terminal connector.

  ADVANTAGE OF THE INVENTION According to this invention, the technique of ensuring appropriately contact | abutting of the shield to a terminal connector can be provided in the case of the attachment operation | work of the board | substrate with which the connector terminal was provided, and a shield.

It is a figure which shows the shield based on embodiment. It is a figure which shows the opening for connectors and the connector fixing | fixed part of a shield based on embodiment. It is a perspective view which shows the shield of the state by which the HDMI connector based on embodiment is arrange | positioned. It is a back perspective view showing a shield in a state where an HDMI connector is arranged according to an embodiment. It is sectional drawing of the side surface which shows the shield of the state by which the HDMI connector based on embodiment is arrange | positioned. It is a figure which shows the connection procedure of the board | substrate which has an HDMI connector, and a shield based on embodiment. It is a figure which shows the connection procedure of the board | substrate which has an HDMI connector, and a shield based on embodiment. It is a figure which shows the connection procedure of the board | substrate which has an HDMI connector, and a shield based on embodiment. It is a figure which shows the connector fixing | fixed part of the shield based on the modification of embodiment. It is a figure which shows the shield based on background art. It is a figure which shows the shield based on background art.

  Next, modes for carrying out the present invention (hereinafter, simply referred to as “embodiments”) will be specifically described with reference to the drawings.

  1A and 1B are diagrams showing a shield 20 according to the present embodiment, in which FIG. 1A is a perspective view and FIG. 1B is a side sectional view. FIG. 2 is a view focusing on the connector opening 30 and the connector fixing portion 40 of the shield 20, and FIG. 2A is from the outside direction (the direction of arrow A <b> 1 in FIG. 1A). FIG. 2 (b) is a view seen from the inside direction (the direction of arrow A2 in FIG. 1 (a)), and FIG. 2 (c) shows the state before the connector fixing portion 40 is processed. FIG. Further, FIG. 3 is a diagram showing a state in which the HDMI connector 60 and the like are arranged in FIG. FIG. 4 is a perspective view showing a state in which the HDMI connector 60 is arranged from the back side (inside: direction of arrow A2 in FIG. 3). FIG. 5 is a cross-sectional view showing a state in which the HDMI connector 60 is disposed.

  The shield 20 is used for a thin display device such as a liquid crystal television, and is attached to a substrate 95 having terminals such as an HDMI connector 60 and a USB terminal connector 80. The shield 20 is formed by subjecting a steel plate or an aluminum plate to a predetermined bending process or the like, and thereby a top surface portion 21, a front surface portion 22 bent vertically from the top surface portion 21, and a flat surface portion 23 bent vertically forward from the front surface portion 22. Etc.

  The front surface portion 22 of the shield 20 is provided with connector openings 30 and 90 for HDMI connectors 60 and USB terminals. In this embodiment, since the structure of the connector opening 30 of the HDMI connector 60 is characterized, the connector opening 30 and the connector fixing portion 40 of the HDMI connector 60 will be mainly described, and other structures and the like will be described. Description is omitted as appropriate.

  The connector fixing portion 40 is formed with a connector fixing portion 40 bent inward at the outer edge portion of the connector opening 30 provided in the front surface portion 22 of the shield 20. The connector fixing portion 40 includes a tongue-like base portion 42 and a tip convex portion 44 formed at the tip portion thereof. Here, the tip end portion of the base portion 42 is processed into a convex shape by drawing in the downward direction, that is, in the direction of the HDMI connector 60, and the tip convex portion 44 is formed. In addition, since the front-end | tip convex part 44 can ensure a contact part as a surface in the case of a drawing process, it is easy to ensure sufficient grounding. The tip convex portion 44 may be a simple bending process or a hemispherical convex shape as long as sufficient grounding performance can be ensured in design. Further, it may be formed so that the part to be bent before processing is clearly understood.

  More specifically, as shown in FIG. 2 (c), the shape of the connector opening 30 of the HDMI connector 60 is processed so as to leave only the three left and right sides of the region that is conventionally removed and discarded. The Further, the tip convex portion 44 is drawn in a predetermined region of the tip portion of the base portion 42. Subsequently, the base portion 42, which is a tongue-shaped portion, is pushed and bent inward (in the HDMI terminal port) about the remaining one side (here, the upper side) as an axis. At this time, the lowest position on the lower surface side of the tip convex portion 44 is a position slightly lower than the height of the HDMI connector 60 (for example, a position lower by about 0.2 mm to 0.3 mm).

  Next, a procedure for attaching the shield 20 to the substrate 95 will be briefly described with reference to FIGS.

  First, the shield 20 is disposed with respect to the substrate 95 with the right side in the drawing slightly facing downward. This is because the tip convex portion 44 of the connector fixing portion 40 bent inward is set to be positioned below the HDMI connector 60 when fixed.

  Subsequently, as shown in FIG. 7, the RCA connector 85 arranged in parallel with the HDMI connector 60 is inserted into the connector opening 92 while maintaining the state where the shield 20 is slightly inclined.

  When the front end portion of the substrate 95 comes into contact with the inner surface of the front surface portion 22 of the shield 20, the inclination of the shield 20 is restored. Then, the tip convex portion 44 of the connector fixing portion 40 comes into contact with the connector top surface portion 62 of the HDMI connector 60. Since the screw holes provided in the board fixing portion 25 and the like match the predetermined screw holes of the board, when the screws are fixed, the tip convex portion 44 contacts the connector top surface portion 62 of the HDMI connector 60 with a predetermined pressure. Touch. As a result, predetermined grounding is realized.

  By adopting such a configuration for the connector fixing portion 40, when the shield 20 is attached to the board 95, the tip convex portion 44 of the connector fixing portion 40 is surely applied to the middle of the connector top surface portion 62 of the HDMI connector 60. Touch.

  In general, since the connector opening 30 is designed to be larger than the HDMI connector 60, in the conventional configuration, there is a possibility that a clip or the like is mixed when the user uses it unexpectedly. However, in the present embodiment, the front side (outside direction side) of the HDMI connector 60 is not exposed because it is covered with the base portion 42 of the connector fixing portion 40, and there is a tip convex portion 44, which is not zero-fitting. Can be effectively prevented.

  In addition, since the contact is made at the center portion of the HDMI connector 60, it is possible to ensure the contact of the shield 20 accurately during the mounting operation. In addition, since the connector fixing portion 40 extends from the connector opening 30 formed in the front surface portion 22 and bends, not the top surface portion 21 portion of the shield 20, the component is taller than the HDMI connector 60 (for example, the RCA connector). 85) can be appropriately joined to the shield 20 and the HDMI connector 60. That is, the bonding between the HDMI connector 60 and the shield 20 can be secured at the side surface position that does not depend on the height of the shield 20. As a result, the degree of design freedom is improved. Further, since the punched portion as the connector opening 30 of the HDMI connector 60 is used, the bent portion can be secured larger than the conventional one, so that the displacement and deformation hardly occur at the time of impact, processing or transportation. Further, unlike the conventional case, the HDMI connector 60 is not exposed from the shield 20, and static electricity can be prevented from directly flying to the HDMI connector 60.

  The present invention has been described based on the embodiments. This embodiment is an exemplification, and it is understood by those skilled in the art that various modifications can be made to combinations of the respective components and the like, and such modifications are within the scope of the present invention.

  For example, as shown in FIG. 9A, the connector fixing portion 40a extending from the connector opening 30a is divided into left and right, and either the left or right of the connector fixing portion 40a (here, the right side in the figure) is the connector. The opening 30a may be bent at the lower side. That is, when the shield 20 is fixed to the board 95, the connector fixing portion 40a (base portion 42a, tip convex portion 44a) presses the HDMI connector 60 from above and below. Further, as shown in FIG. 9B, the connector fixing portion 40b extending from the connector opening 30b may be divided into upper and lower parts. Similarly, when the shield 20 is fixed to the board 95, the connector fixing portion 40b (base portion 42b, tip convex portion 44b) presses the HDMI connector 60 from above and below. However, since the lower surface of the HDMI connector 60 is a portion fixed to the substrate 95, an interference prevention structure needs to be applied to a connection portion between the substrate 95 and the HDMI connector 60, and the like.

20 Shield 21 Top surface portion 22 Front surface portion 30, 30 a, 30 b Connector openings 40, 40 a, 40 b Connector fixing portions 42, 42 a, 42 b Base portions 44, 44 a, 44 b Tip convex portion (processing portion)
60 HDMI connector 62 Connector top surface 95 Board

Claims (2)

A shield formed by a metal plate,
An opening in which the terminal connector is disposed;
A tongue-like terminal fixing portion that is bent inside the opening and extends from the metal plate;
A processed portion formed near the tip of the terminal fixing portion;
Have
The shield is characterized in that the processed portion is processed toward a side where the terminal connector is disposed.   A thin display device comprising the shield according to claim 1 and a terminal connector.

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