JP5333535B2 - Mounting structure of external connection terminal - Google Patents

Description

  The present invention relates to a structure for mounting an external connection terminal such as an antenna input terminal of a thin liquid crystal television receiver, in particular, an external connection terminal protruding outward from a through hole formed in a rear panel of a cabinet. The present invention relates to an external connection terminal mounting portion structure in which measures are taken to prevent a situation in which an excessive load is applied to cause damage.

  FIG. 5 is a schematic perspective view showing a thin liquid crystal television receiver having an external connection terminal 31 as viewed from the back side. FIG. 6 is an explanatory view showing an assembly process of the cabinet 10 of the thin liquid crystal television receiver. 7 is a schematic perspective view of a tuner 30 having an antenna input terminal as the external connection terminal 31.

  The thin liquid crystal television receiver illustrated in FIG. 5 is configured such that the cabinet 10 is configured by closing the frame-shaped front panel 11 and the rear panel 12, and the display of the liquid crystal module housed in the cabinet 10 is displayed. A portion (not shown) is exposed toward the front of the front panel 11. The rear panel 12 has a circular through-hole portion 20, and the external connection terminal 31 mounted on the control board 40 (see FIG. 6) of the liquid crystal module is inserted into the through-hole portion 20. And protrudes outside the rear panel 12. The external connection terminal 31 corresponds to the columnar antenna input terminal of the tuner 30 shown in FIG. 7. At the insertion position of the external connection terminal 31 with respect to the through hole 20, both are positioned concentrically, In addition, the exterior surface of the back panel 12 is formed in a flat plane around the through-hole portion 20, thereby producing a simple appearance. In FIG. 5, reference numeral 100 denotes a stand, and the thin liquid crystal television receiver to which the stand 100 is assembled is classified as a stationary thin liquid crystal television receiver.

  The cabinet 10 can be easily and accurately assembled by performing the closing process illustrated in FIG. In the assembling process of the figure, an operation of rotating the back panel 12 as indicated by an arrow R in a state where the one end edge 14 of the back panel 12 is abutted against the one end edge 13 of the front panel 11 on which the external connection terminals 31 are installed. Is done. Then, through this turning operation, the other end edge (not shown) of the back panel 12 is closed to the other end edge (not shown) of the front panel 11.

  For this reason, in order to prevent the rear panel 12 and the external connection terminal from being damaged in the above-described closing process, it is required that the hole edge of the through hole 20 does not interfere with the top of the external connection terminal. The Therefore, when the through hole 20 of the back panel 12 is formed by a circular hole as described above, the size (inner diameter diameter) of the circular through hole 20 is set to the outer periphery of the external connection terminal 31. It is longer for the diameter. This will be described next with reference to FIG.

  FIG. 8 is a front view showing a place where the external connection terminal 31 is inserted into the through hole 20 of the back panel 12. In the drawing, the inner diameter diameter dimension of the through-hole portion 20 is indicated by D, and the outer diameter diameter dimension of the external connection terminal 31 is indicated by D1. If the inner diameter D of the through hole 20 is longer than the outer diameter D1 of the external connection terminal 31 as described above and both are arranged concentrically, the hole of the through hole 20 Between the edge 21 and the external connection terminal 31, a gap 70 having a relatively long dimension C is formed around the entire periphery of the external connection terminal 31. Therefore, the inside of the cabinet 10 (see FIG. 5) can be seen through the gap 70. As a result, when the control board 40 of the liquid crystal module and the shield plate 50 covering the tuner 30 are accommodated inside the back panel 12, the control that can be seen through the gap 70 as shown in FIG. A part of the substrate 40 and the shield plate 50 becomes conspicuous and unsightly, and the appearance quality of the cabinet 10 is impaired.

  In addition, when the gap 70 is wide open, when an excessive lateral load is applied to the external connection terminal 31 protruding from the through-hole portion 20 to the outside of the back panel 12, the external connection terminal 31 is connected to the gap 70. There is a possibility that a situation may occur in which an inclination is deformed beyond an allowable range and the damage occurs. The lateral load applied to the external connection terminal 31 is applied to the external connection terminal 31 when the counterpart terminal 60 such as a plug indicated by a virtual line in FIG. 5 is fitted and removed, or the counterpart terminal 60 connected to the external connection terminal 31. This occurs when the user's foot is caught by the signal cord 61 extending from the signal cord 61 and the signal cord 61 is pulled.

  In view of this, the structure for attaching the external connection terminal shown in FIG. 9 has been proposed. In the mounting portion structure shown in FIG. 1, the reinforcing ribs 65 and 65 are protruded integrally at the outer surface side of the back panel 12 at symmetrical positions sandwiching the through-hole portion 20. According to this mounting portion structure, when the mating terminal 60 is fitted to and detached from the external connection terminal 31, the mating terminal 60 abuts on any one of the reinforcing ribs 65, and the displacement width of the mating terminal 60 is suppressed within a small range. . Therefore, it is difficult for the external connection terminal 31 to be inclined and deformed beyond the allowable range in the gap 70 (see FIG. 8), and the external connection terminal 31 is not easily damaged by the inclination deformation.

  In the mounting portion structure described with reference to FIG. 9, it can be said that the external connection terminal 31 is not easily damaged due to the inclination deformation. However, when the counterpart terminal 60 is not connected to the external connection terminal 31, FIG. In the same manner as described with reference to FIG. 5, the situation that the control board and the shield plate are visible through the gap 70 described above and they are conspicuous and the appearance quality of the cabinet 10 is impaired is not improved. In terms of appearance, the protrusion of the reinforcing rib 65 from the back panel 12 may hinder the appearance of the cabinet from being hindered by the simplicity of the appearance.

  On the other hand, an external connection terminal mounting portion structure shown in FIG. 10 has also been proposed. In this mounting portion structure, the inner peripheral diameter D of the circular through-hole portion 20 of the back panel 12 is shortened so as to be close to the outer peripheral diameter D1 of the external connection terminal 31, so that the gap 70 around the entire outer connection terminal 31 is obtained. Is narrowed. The width (dimension C) of the gap 70 allows the hole edge 21 of the through-hole portion 20 to receive the external connection terminal 31 that is tilted and prevents damage due to tilt deformation exceeding the allowable range of the external connection terminal 31. It is the size to get.

  10, the reinforcing rib 65 shown in FIG. 9 does not exist on the outer surface side of the back panel 12, so that the appearance of the back panel 12 is simplified and the gap 70 is narrow. A part of the control board 40 and the shield plate 50 inside the cabinet (see FIG. 8) is not visible, and the appearance quality of the cabinet 10 is not deteriorated due to the conspicuousness.

  However, in the mounting portion structure of FIG. 10, the inner periphery diameter D of the circular through-hole portion 20 of the back panel 12 is shortened so as to be close to the outer periphery diameter dimension D1 of the external connection terminal 31. Since the gap 70 is narrowed, there is a problem that the assembly process described with reference to FIG. 6 cannot be employed. That is, if the gap 70 is narrow as shown in FIG. 10, the hole edge 21 of the through hole 20 interferes with the top of the external connection terminal 31 as illustrated in FIG. 11 in the closing process at the time of assembling the cabinet. Things are likely to happen. When such interference occurs, in some cases, the rear panel 12, the external connection terminal 31, and eventually the tuner 30 are damaged.

  On the other hand, in the field of television receivers, an attachment structure similar to that described with reference to FIGS. 9 and 10 is known or known (for example, see Patent Document 1).

  In addition, in order to prevent the antenna input terminal of the tuner from protruding from the flat-screen television receiver and to prevent the antenna input terminal from becoming high temperature, the antenna input terminal is provided by a plurality of protrusions provided on the flat part of the shield part. Supporting a pedestal portion provided in the case has also been proposed (see, for example, Patent Document 2).

JP 2011-29825 A JP 2011-18820 A

  The present invention has been made in view of the above problems and situations. That is, the present invention avoids a situation in which the hole edge of the through hole formed in the back panel interferes with the top of the external connection terminal in the closing process when assembling the cabinet, while the other party connected to the external connection terminal Even when the user's foot is caught by the signal cord extending from the terminal, it is possible to suppress the situation that the external connection terminal is damaged by a lateral load applied to the external connection terminal. Even when the counterpart terminal is not connected to the external connection terminal, the inside of the cabinet can be seen from the gap between the hole edge of the through hole and the external connection terminal, improving the appearance quality of the cabinet An object of the present invention is to provide an external connection terminal mounting portion structure that can be easily performed and that can easily produce a simple appearance of the rear panel.

In the external connection terminal mounting portion structure according to the present invention, the gap in the first direction between the external connection terminal and the through-hole portion when the external connection terminal is inserted through the through-hole portion is the external connection terminal. The opening width in the second direction of the through-hole portion is inclined and displaced in the second direction. The terminal is received by the hole edge of the through-hole portion, and has a size that can prevent damage due to tilt deformation exceeding the allowable range of the external connection terminal.

The opening width in the second direction of the through-hole portion is that the external connection terminal inclined and displaced in the second direction is received by the hole edge of the through-hole portion, and the damage is caused by the inclination deformation exceeding the allowable range of the external connection terminal. It has a size that can prevent

When the mounting structure of the external connection terminal is configured as described above, even if the external connection terminal inserted through the through hole of the rear panel is inclined and deformed in the second direction, the allowable range of the external connection terminal is maintained. The external connection terminal is received by the hole edge of the through hole portion before the damage due to the excessive tilt deformation occurs, and the damage is prevented in advance.

In addition, since the width of the gap in the second direction between the external connection terminal and the edge of the through hole is narrower than the width of the gap in the first direction, the edge of the through hole and the external connection The situation where the inside of the cabinet can be seen from the gap between the terminals and the appearance quality of the cabinet is impaired is improved.

  In this invention, the basic shape of the said through-hole part is circular, By integrally forming the plate-shaped shielding piece which opposes in the said 2nd direction in the inner surface side of the said back panel, these shielding pieces of A space between parallel tip edges is provided as a part of the space of the through-hole portion, and the tip edge of the shielding piece is included in a part of the hole edge of the through-hole portion. The distance between the leading edges of the shielding pieces in the second direction is due to the inclination deformation exceeding the allowable range of the external connecting terminals when the leading edges of the shielding pieces receive the external connecting terminals inclined and displaced in the second direction. It is desirable to adopt a configuration in which the size is determined so as to prevent breakage.

  With this configuration, since the shielding piece that restricts the inclination deformation of the external connection terminal within a range that does not cause damage is formed on the inner surface side of the rear panel, the shielding piece is formed from the outside of the rear panel. It becomes difficult to see. Therefore, the through-hole portion formed in the back panel is apparently circular, which helps to produce the simplicity of the appearance of the back panel. In other words, it is possible to avoid a situation in which the shape of the through-hole portion that is visible from the outside of the back panel is non-circular and the appearance is uncomfortable.

  In the present invention, it is possible to adopt a configuration in which the cabinet is a cabinet of a stationary thin-type liquid crystal television receiver, and the external connection terminal is an antenna input terminal. In this configuration, under the circumstances that the signal cord is routed on the floor surface by connecting the other terminal to the antenna input terminal protruding from the through hole portion of the rear panel, the user's foot is caught on the signal cord. In such a case, the external connection terminal tends to be inclined and deformed in the second direction by a load applied to the external connection terminal. However, the inclination deformation of the external connection terminal in the second direction is restricted to an allowable range in which the external connection terminal is not damaged by the hole edge of the through hole receiving the external connection terminal. Therefore, it is possible to prevent the external connection terminal from being damaged due to the inclination deformation.

As described above, according to the external connection terminal mounting portion structure according to the present invention, the opening width of the through-hole portion in the second direction is changed to the edge of the through-hole portion. Since it is defined as a size that can prevent damage due to inclination deformation exceeding the allowable range of the external connection terminal, the situation that the external connection terminal is damaged by a lateral load applied to the external connection terminal is suppressed, In addition, the situation in which the inside of the cabinet can be seen from the gap between the hole edge of the through-hole portion and the external connection terminal, and the appearance quality of the cabinet is impaired is improved. Furthermore, it becomes easy to produce the simplicity of the appearance of the back panel.

It is a schematic perspective view of the attachment part structure of the external connection terminal according to the embodiment of the present invention. It is a front view of the attachment part structure. It is sectional drawing which follows the III-III line of FIG. It is a schematic perspective view of the attachment part structure of the external connection terminal by a modification. It is the schematic perspective view which looked at and showed the thin-type liquid crystal television receiver which has an external connection terminal from the back side. It is explanatory drawing which showed the assembly process of the cabinet of a thin liquid crystal television receiver. It is a schematic perspective view of a tuner having an antenna input terminal as an external connection terminal. It is the front view which showed the insertion location of the external connection terminal with respect to the through-hole part of the back panel by a prior art example. It is a schematic perspective view of the attachment part structure of the external connection terminal by another prior art example. It is a front view of the attachment part structure of the external connection terminal by another prior art example. It is explanatory drawing of the closing process at the time of a cabinet assembly.

  The mounting structure of the external connection terminal according to this embodiment is applied to the thin liquid crystal television receiver described with reference to FIG. That is, the display unit (not shown) of the liquid crystal module housed in the cabinet 10 configured by closing the frame-shaped front panel 11 and the back panel 12 is exposed toward the front of the front panel 11, An external connection terminal 31 is inserted through the through hole 20 formed in the back panel 12 and protrudes to the outside of the back panel 12. The external connection terminal 31 corresponds to the cylindrical antenna input terminal of the tuner 30 shown in FIG.

  Moreover, the cabinet 10 is assembled by performing the closing process illustrated in FIG. This closing process is performed in a state where one end edge (upper end edge) 14 of the rear panel 12 is abutted against one end edge (upper end edge) 13 of the front panel 11 on which the external connection terminal 31 is installed together with the liquid crystal module described above. This is a step of rotating the panel 12 as indicated by an arrow R. Through this turning operation, the other end edge (lower end edge) of the back panel 12 is closed to the other end edge (lower end edge) of the front panel 11.

  In the following description, the perspective direction with respect to the abutting portion A (see FIG. 6) between the one end edge 13 of the front panel 11 and the one end edge 14 of the rear panel 12 that is the pivot point of the rear panel 12 in the closing step is first. A direction is defined, and a direction orthogonal to the first direction is defined as a second direction. The first direction is indicated by a symbol T, and the second direction is indicated by a symbol W. As shown in FIG. 5, the first direction T corresponds to the height direction of the stationary thin-type liquid crystal television receiver, and the second direction W corresponds to the width direction of the stationary thin-type liquid crystal television receiver. ing.

  1 is a schematic perspective view of a mounting portion structure for external connection terminals according to this embodiment, FIG. 2 is a front view of the mounting portion structure, and FIG. 3 is a cross-sectional view taken along line III-III in FIG.

  As shown in FIGS. 1 to 3, the through-hole portion 20 formed in the back panel 12 forms a circle on the outer surface 22 and the inner surface 23 of the back panel 20, and the hole wall surface 24 forms a cylindrical surface. Yes. And the through-hole part 20 which has such a circular basic shape, and the column-shaped external connection terminal 31 which has penetrated the through-hole part 20 and protruded the outer side of the back panel 12 are located concentrically. ing. The configuration described above is the same as the configuration of the mounting portion structure described with reference to FIG. Therefore, the counterpart terminal 60 is connected to the protruding portion of the external connection terminal 31 from the back panel 12 as shown by the phantom line in FIG.

  In this embodiment, as shown in FIG. 2 or FIG. 3, a pair of plate-like shielding pieces 25, 25 facing each other in the second direction W are provided on the inner surface 23 side of the rear panel 12. It is integrally formed of synthetic resin. These shielding pieces 25, 25 have straight edges 26, 26 extending straight in the first direction T. The tip edges 26 of the pair of shielding pieces 25 are parallel to each other, and the through hole portion 20 is more than the circular hole edge 21 of the through hole portion 20 whose basic shape is circular. It protrudes toward the center side. The space between the leading edges 26 and 26 of the shielding pieces 25 and 25 is provided as a part of the space of the through-hole portion 20.

  When the through hole 20 is configured as described above, as shown in FIG. 2, the maximum opening width in the first direction T of the through hole 20, that is, in the first direction T passing through the center of the through hole 20. The diameter dimension D is longer than the maximum opening width in the second direction W, that is, the distance dimension L between the tip edges 26, 26 of the pair of shielding pieces 25, 25. In addition, the opening width in the first direction T of the through-hole portion 20, in other words, the opening width in the first direction T at an arbitrary position in the second direction W of the through-hole portion 20 is determined by the above-described closing process. The 20 hole edges 21 have a size (dimension) that does not interfere with the top of the external connection terminal 31 installed on the front panel 12 side. That is, in the above-described closing process, the external connection terminal 21 is inserted between the pair of shielding pieces 20 and 25 without interfering with the hole edge 21 of the through-hole portion 20. On the other hand, the opening width in the second direction W, in other words, the opening width in the second direction W at an arbitrary position in the first direction T of the through-hole portion 20 is externally inclined and displaced in the second direction W. The connection terminal 31 is received by the edge of the through-hole portion 20, specifically, the tip edge 26, 26 of one of the pair of shielding pieces 25, 25 facing each other in the second direction W. It has a size (dimension) that can prevent breakage due to tilt deformation exceeding the allowable range.

  As can be seen from FIG. 2, a gap having a relatively wide dimension C in the first direction T is formed between the through-hole portion 20 and the external connection terminal 31 that is inserted through the through-hole portion 20 and is concentrically located. Whereas 70 is formed, the gap 71 formed in the second direction W is narrower than the gap 70 in the first direction T. 2 and 3, the dimension of the narrowest portion of the gap 71 is indicated by a symbol S.

  According to the mounting structure of the external connection terminal according to this embodiment, even if the external connection terminal 31 inserted through the through hole 20 of the back panel 12 is inclined and deformed in the second direction W, the allowable range of the external connection terminal 31 The external connection terminal 31 is received by the tip edge 26 of one of the pair of shielding pieces 25, 25 before the breakage due to the tilt deformation exceeding. For this reason, it is possible to prevent the external connection terminal 31 from being damaged due to the tilt deformation exceeding the allowable range. In this embodiment, the space between the tip edges 26, 26 of the shielding pieces 25, 25 is provided as a part of the space of the through-hole portion 20, so that the tip edges 26, 26 of the shielding pieces 25, 25 are provided. 26 forms a part of the hole edge 21 of the through-hole portion 20.

  In addition, the maximum opening width in the first direction T of the through-hole portion 20 (the inner peripheral diameter dimension D of the through-hole portion 20) is the maximum opening width in the second direction W of the through-hole portion 20 (the pair of shielding pieces 25). 25, and the opening width in the first direction T is equal to the hole edge of the through-hole portion 20 in the closing step included in the cabinet assembling step. 21 has a size that does not interfere with the top of the external connection terminal 31, so that the top of the external connection terminal 31 and the hole edge 21 of the through-hole 20 interfere with each other in the closing step, resulting in damage. Can't happen.

  Furthermore, since the reinforcing rib 65 protruding from the back panel 12 as shown in FIG. 9 is not provided, it is easy to produce the simplicity of the appearance of the back panel 12.

  In addition, the width of the gap 71 in the second direction W between the external connection terminal 31 and the hole edge 21 of the through-hole portion 20 is narrower than the width of the gap 70 in the first direction T. Therefore, since part of the control board 40 and the shield plate 50 inside the cabinet is difficult to see from the gap between the hole edge 21 of the through-hole portion 20 and the external connection terminal 31, the conspicuousness of the cabinet 10 The situation that appearance quality is impaired does not occur.

  In particular, in this embodiment, the shielding pieces 25 and 25 that restrict the inclination deformation of the external connection terminal 31 within a range that does not cause damage are formed in a plate shape on the inner surface side of the back panel 12. These shielding pieces 25 are located at the positions where they penetrate into the deep part of the through-hole part 20. Therefore, the shielding pieces 25, 25 are difficult to see from the outside of the back panel 12, and the through-hole portion 20 is apparently circular. Therefore, the simplicity of the appearance is easily given to the back panel 20.

  FIG. 4 is a schematic perspective view of an external connection terminal mounting structure according to a modification. In this modification, the maximum opening width in the first direction T is longer than the maximum opening width in the second direction W by forming the through-hole portion 20 in an oval shape. In addition, the opening width in the first direction T has such a size that the hole edge 21 of the through hole 20 does not interfere with the top of the external connection terminal 31 installed on the front panel side in the above-described closing process. In contrast, the opening width in the second direction W is such that the external connection terminal 31 tilted and displaced in the second direction W is received by the hole edge 21 of the through-hole portion 20 and the tilt deformation exceeds the allowable range of the external connection terminal. It has a size that can prevent breakage due to. The configuration of this modification corresponds to a configuration in which the opening width of the circular through-hole portion is shortened in the second direction W.

  Also by adopting the configuration according to this modified example, the external connection terminal 31 tilted and displaced in the second direction W is received by the hole edge 21 of the through-hole portion 20, and the external connection terminal 31 is damaged due to the tilt deformation exceeding the allowable range. Can be prevented. Moreover, the maximum opening width in the first direction T of the through-hole portion 20 is longer than the maximum opening width in the second direction W of the through-hole portion 20, and the opening width in the first direction T is the cabinet. Since the hole edge 21 of the through-hole portion 20 has a size that does not interfere with the top portion of the external connection terminal 31 in the closing step included in the assembly step, the top portion and the through-hole portion of the external connection terminal 31 in the closing step. There is no possibility that the 20 hole edges 21 interfere with each other and break them. Since the reinforcing rib 65 protruding from the back panel 12 as shown in FIG. 9 is not provided, it is easy to produce the simplicity of the appearance of the back panel 12. Since the inside of the cabinet becomes difficult to see from the gap between the hole edge 21 of the through-hole portion 20 and the external connection terminal 31, the situation where the inside of the cabinet is seen and the appearance quality of the cabinet is impaired is improved.

  The embodiment and the modification described above are applied to a stationary thin liquid crystal television receiver. For this reason, in the situation where the signal cord is routed on the floor surface by connecting the counterpart terminal to the antenna input terminal as the external connection terminal 31 protruding from the through hole portion 20 of the back panel 12, the signal cord Even if the user's foot is caught on the antenna input terminal and the antenna input terminal is inclined and deformed in the second direction W, the hole edge 21 of the through hole portion 20 (including the tip edge 26 of the shielding piece 25) becomes the antenna input terminal. By receiving, the inclination deformation width of the antenna input terminal is restricted to an allowable range in which the antenna input terminal 31 is not damaged. Accordingly, it is possible to prevent the antenna input terminal from being damaged due to the tilt deformation.

  The mounting structure of the external connection terminal according to the present invention is not limited to the mounting structure of the antenna input terminal of the tuner. For example, the present invention can be similarly applied to a mounting structure of a cylindrical jack that is inserted into the through hole portion of the back panel and protrudes to the outside.

DESCRIPTION OF SYMBOLS 10 Cabinet 12 Rear panel 13 One end edge of front panel 14 One end edge of rear panel 20 Through-hole part 21 Hole edge of through-hole part 25 Shielding piece 26 Front edge of shielding piece (hole edge of through-hole part)
31 External connection terminal (antenna input terminal)
60 Mating terminal A Abutting point between one edge of the front panel and one edge of the back panel T First direction W Second direction

Claims (3)

In the external connection terminal mounting portion structure configured such that the external connection terminal accommodated in the cabinet is inserted into a through-hole portion formed in the back panel of the cabinet and protrudes to the outside of the back panel.
A gap in the first direction between the external connection terminal and the through-hole portion in a state where the external connection terminal is inserted through the through-hole portion is between the external connection terminal and the through-hole portion. Is formed larger than the gap in the second direction orthogonal to the first direction,
Opening width in the second direction of the upper SL through hole portion, an external connection terminal that is displaced tilt in the second direction receiving the hole edge of the through hole, by slope variations exceeding the allowable range of the external connection terminals An external connection terminal mounting portion structure having a size capable of preventing breakage. The basic shape of the through hole is circular,
By integrally forming a plate-shaped shielding piece facing in the second direction on the inner surface side of the back panel, the space between the parallel leading edges of the shielding pieces can be reduced to the space of the through-hole portion. The tip edges of the shielding pieces are included in a part of the hole edges of the through-hole portion, and the mutual distance in the second direction between the tip edges of the shielding pieces is provided. The external connection terminal tilted in the second direction is set to a size that allows the tip edge of the shielding piece to receive and prevent damage due to tilt deformation exceeding the allowable range of the external connection terminal. Mounting structure for external connection terminals. The cabinet is a cabinet of stationary thin liquid crystal television receiver, the external connecting terminals, Ri Oh at antenna input terminal, such that the second direction is the longitudinal direction of the cabinet, the through holes attaching part structure of the external connection terminal according to claim 1 or claim 2 but that are formed.

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