JP4547593B2 - Electronic tuner device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic tuner device provided in a receiver, an audio device, or the like, and more particularly to a connector mounting structure to which an antenna line or the like is connected.
[0002]
[Prior art]
The electronic tuner device is equipped with a connector for connecting the antenna wire of the parallel feeder, but this connector is a relatively large part, and a load is applied when the antenna wire is connected. There was a problem that could not. For this purpose, the electronic tuner device is configured such that a connector housing space is formed in the shield case and the connector is assembled.
[0003]
That is, as shown in FIGS. 4 to 6, the conventional electronic tuner device 50 is a combination of a front plate 52, left and right side plates 53 and 54, a back plate and a ceiling plate and a bottom plate or a partition plate 55 not shown. A configured shield case 51 is provided. The electronic tuner device 50 stores a wiring board 56 on which electronic components, integrated circuit elements, and the like are mounted, electronic components, and the like, although details are omitted in the shield case 51.
[0004]
In the electronic tuner device 50, a coaxial connector 57 for connecting a coaxial cable is attached to the front plate 52, and a connector housing space 59 is formed between the front plate 52 and the partition plate 55 to connect parallel feeder lines. The connector 58 is assembled. The connector housing space 59 forms a pair of convex pieces 60 and 61 that are opposed to each other in the length direction by a lengthwise slit formed in a part of the front plate 52, and the convex pieces 60 and 61 are folded inward. Composed by singing.
[0005]
Each convex piece 60, 61 has a length substantially equal to the facing distance between the front plate 52 and the partition plate 55, and an engaging convex portion is formed at the tip, although not shown. In the bent state, each of the convex pieces 60, 61 is abutted against the partition plate 55, and the engagement convex portion is relatively engaged with an engagement hole (not shown) formed in the partition plate 55. Thus, the connector storage space 59 is formed. The connector housing space 59 is configured such that the rear surface portion is closed by the partition plate 55, both side surface portions are closed by the convex pieces 60 and 61, and the bottom surface portion is closed by the wiring board 56.
[0006]
A connector 58 is assembled and stored in the connector storage space 59. The connector 58 has outer dimensions, that is, a width dimension, a height dimension, and a depth dimension, which are substantially equal to the width dimension, the height dimension, and the depth dimension of the connector storage space 59, respectively, and the front portion is configured as a feeder connection portion 58a. Yes. Although details of the feeder connecting portion 58a are omitted, a pair of insertion holes 62 (62a, 62b) into which antenna terminal pieces are incorporated and antenna wires are respectively inserted are formed. Lock levers 63 (63a, 63b) are provided for locking the inserted antenna wires in a state where they are connected to the antenna terminal pieces.
[0007]
The connector 58 has a pair of wedge-shaped protrusions 64 (64a, 64b) protruding from the bottom surface in the width direction, and these protrusions 64 are engaged with the engagement holes 65 of the wiring board 56 as shown in FIG. Is mounted on the wiring board 56 by being relatively engaged with each other. In a state where the connector 58 is mounted on the wiring board 56, a terminal portion (not shown) is soldered to a connection terminal portion formed on the main surface of the connector 58 to be electrically connected. In this state, the connector 58 is in contact with the front surface of the partition plate 55 and both side surfaces are in contact with the inner surfaces of the convex pieces 60 and 61. In the connector 58, the feeder connecting portion 58a is substantially flush with the front plate 52 and faces outward.
[0008]
The electronic tuner device 50 is attached to the inner surface of the panel 66 on the device main body side such as a receiver or an audio device with the front plate 52 of the shield case 51 as an attachment surface. The panel 66 is provided with a circular opening 67 corresponding to the coaxial connector 57 and a rectangular opening 68 corresponding to the connector 58. The rectangular opening 68 allows the insertion hole 62 and the lock lever 63 of the connector 58 to face outward, but is formed to have a slightly smaller opening dimension than the outer dimension of the feeder connection part 58a.
[0009]
The electronic tuner device 50 is attached to the panel 66 such that the tip end portion of the coaxial connector 57 protrudes outward from the circular opening 67 and the feeder connection portion 58a of the connector 58 faces outward from the rectangular opening 68. In this state, the electronic tuner device 50 has the connector 58 held by the partition plate 55 and the panel 66 in the front-rear direction, held by the convex pieces 60 and 61 in the left-right direction, and the wiring board 56 in the vertical direction. Held with a ceiling board.
[0010]
[Problems to be solved by the invention]
In the conventional electronic tuner device 50, as described above, the connector 58 is assembled in the connector housing space 59 constituted by the front plate 52 and the partition plate 55. In the electronic tuner device 50, the connector 58 is prevented from tilting inward by abutting the back surface portion against the partition plate 55, and also, when the antenna wire is connected, the connector 58 is prevented from being scattered.
[0011]
In the electronic tuner device 50, the partition plate 55 is in contact with the entire rear surface of the connector 58, so that surface accuracy and position accuracy of the partition plate 55 are required. The connector 58 is sandwiched between the partition plate 55 and the panel 66, so that a compression force is applied from the partition plate 55 and the panel 66.
[0012]
In the electronic tuner device 50, since the shield case 51 is configured by combining each plate made of a thin metal plate, it is difficult to position the partition plate 55 with high accuracy. In the electronic tuner device 50, a greater stress is applied to the connector 58 when the position of the partition plate 55 and the partition plate 55 and the panel 66 are not held with high surface accuracy. In the electronic tuner device 50, this stress is applied to the wiring board 56 via the connector 58, and the wedge-shaped convex portion 64 and the engagement hole 65 may be damaged or the pattern may be peeled off.
[0013]
In the electronic tuner device 50, the lengths of the projecting pieces 60 and 61 and the assembly position of the partition plate 55 are determined according to the external specification of the connector 58. For this reason, the electronic tuner device 50 has a problem in that the shield case 51 is not compatible with the connector 58 having different external specifications and must be newly manufactured together with the wiring board 56.
[0014]
Therefore, the present invention eliminates the need for high-precision production and assembly of the shield case, suppresses the action of a large stress on the connector, and reliably holds the connector case, thereby achieving compatibility with connectors having different external specifications. An object of the present invention is to provide an electronic tuner device.
[0015]
[Means for Solving the Problems]
An electronic tuner device according to the present invention that achieves this object includes a connector that is mounted on a wiring board and has a front surface portion, a back surface portion, and both side surface portions, and a shield case. The shield case includes a front plate, both side plates, a partition plate that is supported to face the front plate, and a ceiling plate and a bottom plate that close the upper and lower open parts, each formed of a thin metal plate. Electronic tuner device, between the front plate and the partition plate of the shield case, with the connector receiving recess for accommodating the connector by holding a rear portion and both side surface portions are configured, the connector receiving recessed on the front of the partition plate The receiving convex part which protrudes in a part is formed.
[0016]
In the electronic tuner device, the receiving convex portion is integrally formed in a bridge shape on the front surface of the partition plate, and the protruding amount into the connector housing space portion is adjusted in accordance with the depth dimension of the connector.
[0017]
According to the electronic tuner device according to the present invention configured as described above, the connector is assembled in the connector housing space of the shield case, and the receiving convex portion is in contact with and held on a part of the back surface of the connector. According to the electronic tuner device, the degree of freedom of the connector in the connector storage space is increased with respect to the positional accuracy of the partition plate and variations in the surface accuracy of the partition plate and the panel of the device main body, and an excessive stress load is reduced. In addition, the occurrence of damage to each part and pattern peeling of the wiring board is reduced.
In addition, according to the electronic tuner device, by adjusting the protruding amount of the receiving convex portion into the connector housing space portion, compatibility with connectors having different external specifications can be achieved without newly manufacturing a shield case. .
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The electronic tuner device 1 shown as an embodiment has substantially the same basic configuration as the above-described conventional electronic tuner device 50. As shown in FIGS. 1 to 3, the front plate 3 and both ends of the front plate 3 are provided. A frame is constituted by left and right side plates 4 and 5 that support the rear plate and a back plate (not shown), and a ceiling case 6 and a bottom plate 7 are combined with the frame to form a shield case 2 that is electromagnetically shielded from the outside. Consists of. The shield case 2 is not only formed by the above-described constituent members as independent members, but also, for example, a substantially U-shaped member in which the left and right side plates 12 and the bottom plate 15 are integrally formed, or these and the back plate. Of course, it is also possible to use a member integrally formed.
[0019]
In the shield case 2, each of the above-described plates is formed of a thin metal plate. The front plate 3, the side plates 4, 5 and the back plate are not described in detail, but engaging protrusions and engaging holes are appropriately formed at the respective ends that face the counterpart, and these opposing engagements By combining the convex portion and the engagement hole, they are combined into an overall frame shape. The side plates 4 and 5 are shown only on the side plate 4 side in FIG. 1, but the upper engagement ribs 4a and the lower side parallel to each other in the length direction from the upper and lower edges to the predetermined height position on the outer surface. The engagement rib 4b is formed. The side surface plates 4 and 5 constitute a joint portion between the ceiling plate 6 and the bottom plate 7 while the upper engagement rib 4a and the lower engagement rib 4b improve the mechanical strength in the thickness direction.
[0020]
The ceiling plate 6 has an overall plate shape having an outer shape sufficient to close the ceiling portion of the frame body described above, and side portions 6a and 6b are bent at both side edges. In the ceiling plate 6, a large number of strip-like engagement pieces 6c are formed on the side surface portions 6a and 6b by a large number of slits formed from the lower ends. Each engagement piece 6c is curved in an arc shape so as to be convex inward. The ceiling plate 6 is combined with the ceiling portion of the frame body described above by the engagement pieces 6 c engaging with the upper engagement ribs 4 a of the side plates 4 and 5.
[0021]
The bottom plate 7 also has an overall plate shape having an outer shape sufficient to close the bottom portion of the frame body described above, and side portions 7a and 7b are bent at both side edges. The bottom plate 7 has a plurality of strip-like engagement pieces 7c formed on the side surface portions 7a and 7b by a large number of slits formed from the lower ends. Each engagement piece 7c is also curved in an arc shape so as to be convex inward. The bottom plate 7 is combined with the bottom surface portion of the frame body described above by the engagement pieces 7c engaging the lower engagement ribs 4b of the side surface plates 4 and 5.
[0022]
The shield case 2 has a predetermined space between the front plate 3 and a partition plate 8 that is supported by both side plates 4 and 5 at both ends, thereby partitioning the internal space. The partition plate 8 keeps the facing distance between the side plates 4 and 5 and provides a shielding action for the internal space, and also holds the connector 11 as will be described later.
[0023]
Although not described in detail in the internal space, the shield case 2 incorporates a wiring board 9 on which electronic components, integrated circuit elements, and the like are mounted, various electronic components, and the like. Although details are omitted, the wiring board 9 has engagement protrusions and engagement holes appropriately formed on the outer peripheral portion, and engagement holes formed in the front plate 3, the side plates 4, 5 or the back plate or the partition plate 8. And is incorporated into the shield case 2 by being relatively engaged with the engaging projections. As will be described later, a part of the front end portion of the wiring board 9 constitutes a bottom surface portion of the connector housing space portion 12, and a pair of engagement holes 19 are formed.
[0024]
A coaxial connector 10 for connecting a coaxial cable to the front plate 3 is attached to the shield case 2 so as to protrude forward. A connector housing space 12 is formed between the front plate 3 and the partition plate 8 and the connector 11 for connecting the parallel feeder wires is assembled to the shield case 2. The front plate 3 is formed with a pair of convex pieces 13 and 14 that are opposed in the length direction by a slit in the length direction and a slit that reaches the upper edge from the center position of the slit. Each convex piece 13, 14 has a length substantially equal to the facing distance between the front plate 3 and the partition plate 8. Each convex piece 13, 14 has a height substantially equal to the height of the connector 11. Although not shown, each convex piece 13, 14 has an engaging convex portion at the tip.
[0025]
The shield case 2 bends the projecting pieces 13 and 14 inward and abuts the front end portion against the partition plate 8 and is opposed to an engagement groove (not shown) formed with the engagement projecting portion on the partition plate 8 side. By engaging, a connector housing space 12 that opens to the front plate 3 is formed. The connector housing space portion 12 is configured such that the rear surface portion is blocked by the partition plate 8, both side surface portions are closed by the convex pieces 13 and 14, the ceiling portion is closed by the ceiling plate 6, and the bottom surface portion is closed by the wiring board 9.
[0026]
In the shield case 2, a receiving convex portion 15 is formed on the partition plate 8 corresponding to the connector housing space portion 12. The partition plate 8 is formed with a slit 8a in a length direction shorter than the width of the connector housing space 12 at a predetermined height position from the upper end, and a bridge-shaped portion constituted by the slit 8a projects forward. Thus, the receiving convex part 15 is formed by extruding in a convex shape.
[0027]
The connector 11 is assembled and stored in the connector storage space 12. The connector 11 is molded so that the width dimension and the height dimension are approximately equal to the width dimension and the height dimension of the connector housing space portion 12, respectively. The connector 11 is formed so that the depth dimension is slightly smaller than the depth dimension of the connector housing space portion 12. The front surface of the connector 11 is configured as a feeder connection portion 11a.
Although details are omitted in the connector 11, a pair of insertion holes 16 (16a, 16b) into which antenna terminal pieces are respectively built and antenna wires are inserted are formed in the feeder connecting portion 11a. . The connector 11 is provided with a lock lever 17 (17a, 17b) that locks the antenna wire inserted into each insertion hole 16 in a state of being connected to the antenna terminal piece. The connector 11 has a pair of wedge-shaped projections 18 (18a, 18b) protruding from the bottom surface in the width direction.
[0028]
The connector 11 configured as described above is housed in the connector housing space 12, and the wedge-shaped projection 18 is relatively engaged with the engagement hole 19 formed in the wiring board 9 as shown in FIG. And mounted on the wiring board 9. When the connector 11 is mounted on the wiring board 9, a terminal portion (not shown) is soldered to a connection terminal portion formed on the main surface of the connector 11 for electrical connection.
[0029]
In the state where the connector 11 is housed in the connector housing space portion 12, the back surface portion 11 b abuts against the receiving convex portion 15 of the partition plate 8, and both side surface portions 11 c and 11 d abut against the inner surfaces of the convex pieces 13 and 14. Touch. In the connector 11, the feeder connecting portion 11a constitutes substantially the same surface as the front surface 3a of the front plate 3, and faces the outside. By forming the receiving projection 15 as described above, the connector 11 abuts on a part of the back surface 11b without abutting on the entire surface.
[0030]
The electronic tuner device 1 is attached to the inner surface of the panel 20 on the device main body side such as a receiver or an audio device with an attachment screw or the like, with the front surface 3a of the front plate 3 of the shield case 2 as an attachment surface. The panel 20 is provided with a circular opening 21 corresponding to the coaxial connector 10, and a horizontally long rectangular opening 22 corresponding to the connector 11. The rectangular opening 22 allows the insertion hole 16 and the lock lever 17 of the connector 11 to face outward, but is formed to have a slightly smaller opening dimension than the outer dimensions of the feeder connection part 11a.
[0031]
The electronic tuner device 1 causes the tip end portion of the coaxial connector 10 to protrude outward from the panel 20 through the circular opening portion 21 and the feeder connection portion 11a of the connector 11 to face outward from the rectangular opening portion 22. It is attached to the panel 20. In the electronic tuner device 1, a coaxial cable for high frequency input is connected to the coaxial connector 10, and input / output parallel feeder wires are respectively inserted into the connector 11.
[0032]
In the electronic tuner device 1, the feeder connecting portion 11 a is brought into contact with the front plate 3 of the shield case 2 and the back surface portion 11 b is received by the partition plate 8 in a state where the connector 11 is housed in the connector housing space portion 12. It is held in contact with the convex portion 15. In the electronic tuner device 1, the connector 11 is configured to hold the back surface portion 11 b by the receiving convex portion 15 having a small contact area without the entire surface being held by the partition plate 8.
[0033]
In the electronic tuner device 1, the connector 11 may be strongly sandwiched between the partition plate 8 and the panel 20 due to the surface accuracy of the partition plate 8, the front plate 20 and the panel 20 and the mutual positional accuracy. Since the electronic tuner device 1 has a structure in which the receiving projection 15 having a small contact area is in contact with the back surface portion 11b of the connector 11, the connector 11 is compared with the case where the partition plate 8 is in contact with the entire surface. The degree of freedom that can be tilted or moved in the front-rear direction is given.
[0034]
Therefore, in the electronic tuner device 1, it is not necessary to form each member of the shield case 2 and the panel 20 with high accuracy and to assemble with high accuracy, and a relatively large pressure contact force from the partition plate 8 and the front plate 20. Even when acted on, the stress on the connector 11 is reduced. In the electronic tuner device 1, due to such a configuration, the stress of the connector 11 is applied to each part, causing problems such as damage to the wedge-shaped convex part 18 and the engagement hole 19 and peeling of the pattern formed on the wiring board 9. Reduced.
[0035]
In the electronic tuner device 1, a load is applied to the connector 11 when the parallel feeder wire is connected to the feeder connection portion 11 a, and this load is connected to the wiring board 9 through the connector 11 and the entire shield case 2. It is suppressed that it acts on. That is, in the electronic tuner device 1, the load applied to the connector 11 is absorbed by the receiving convex portion 15.
[0036]
On the other hand, in the electronic tuner device 1, various connectors 11 may be used depending on the specifications of the main device. In the electronic tuner device 1, it is possible to cope with this without changing the overall configuration of the shield case 2 by adjusting the protrusion amount h (see FIG. 2) of the receiving projection 15 formed on the partition plate 8.
[0037]
In addition, about the receiving convex part 15 formed in the partition plate 8, it is not limited to the shape of the convex part of the length direction mentioned above, For example, you may comprise by the convex part of a height direction. Further, the receiving protrusion 15 may be formed with a plurality of protrusions on the receiving surface to hold the back surface portion 11 b of the connector 11.
[0038]
【The invention's effect】
As described above in detail, according to the electronic tuner device of the present invention, a bridge-shaped receiving convex portion is integrally formed on the receiving surface of the partition plate constituting the connector housing portion, and the back surface portion of the connector is brought into contact. By configuring so as to keep the area small, stress on the connector is reduced. Therefore, according to the electronic tuner device, the component accuracy and assembly accuracy of the constituent members of the shield case and the panel of the device main body can be moderated to reduce the cost, and the occurrence of breakage of each part can be prevented.
Further, according to the electronic tuner device, even when the external specification of the connector is different, it is possible to cope with it by adjusting the protruding amount of the receiving convex portion with respect to the connector housing portion.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a main part of an electronic tuner device shown as an embodiment of the present invention.
FIG. 2 is a plan view of a main part of the electronic tuner device.
FIG. 3 is a longitudinal sectional view of a main part of the electronic tuner device.
FIG. 4 is an exploded perspective view of a main part of a conventional electronic tuner device.
FIG. 5 is a plan view of a main part of the electronic tuner device.
FIG. 6 is a longitudinal sectional view of a main part of the electronic tuner device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electronic tuner apparatus 2 Shield case 3 Front board 4 Side board 5 Side board 6 Ceiling board 7 Bottom board 8 Partition board 9 Coaxial connector 11 Connector 11a Feeder connection part 12 Connector accommodation recessed part 13 Convex piece 14 Convex piece 15 Receiving convex part 20 panels

Claims (2)

A connector mounted on a wiring board, having a front surface portion, a back surface portion, and both side surface portions , each formed of a thin metal plate, a front plate, both side surface plates, a partition plate supported to face the front plate, and upper and lower A shield case composed of a ceiling plate and a bottom plate that closes the open part;
Between the front plate and the partition plates of the shield case, wherein together with the connector housing recess for accommodating the connector holding the both side portions and the back portion is constituted of the connector,
It forms a receiving projection projecting to the connector housing concave portion on the front surface of the partition plate,
The electronic tuner device according to claim 1, wherein the back portion of the connector is abutted against the receiving convex portion and is held between the partition plate and the panel of the device main body.   The receiving convex portion is integrally formed in a bridge shape on the front surface of the partition plate, and a protruding amount into the connector housing space portion is adjusted according to a depth dimension of the connector. Item 4. The electronic tuner device according to Item 1.

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