JP2007227954A - Case body, and receiver equipped with it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a case body, along with a receiver equipped with it, which allows sure contact between a first terminal part of a first member and a second terminal part of a second member, regardless of sticking of flux. <P>SOLUTION: The tip of a first terminal part 310 is formed in almost semicircular plate. The tip part of a second terminal part 250 is provided with a contact part 401 that contacts the first terminal part. The contact part 401 is provided with a slot 440 that has a sharp edge on the first terminal part side, extending toward the tip of the second terminal part. The slot 440 has a specified width W which abuts with the almost semicircular plate of the first terminal part. The slot at the contact part crosses a plate surface direction of the first terminal part at right angle. So, the sharp edge of the slot of the contact part elastically pressurizes the tip of almost semicircular plate of the first terminal part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a case body for electrically connecting a first terminal portion of a first member and a second terminal portion of a second member, and a receiving device including the case body.

As an example, a receiving apparatus that receives a high-frequency input is provided in a television receiver, for example. The receiver of this television receiver receives a high frequency input signal via a receiving antenna.
FIG. 10 shows an example of a cross-sectional structure of a conventional receiving apparatus. The shield member 1000 is also called a shield case, and the shield member 1000 is covered with a shield cover 1004 and a shield cover 1001. The shield member 1000 has side portions 1020 and 1021, and a shield plate 1023 is provided between the side portions 1020 and 1021.
The shield plate 1023 has solder surface terminals 1005, and the solder surface terminals 1005 are electrically connected to claws 1007 formed inside the shield cover 1004. The solder surface terminal 1005 passes through the hole 1003H of the circuit board 1003, and the solder surface terminal 1005 is connected to the conductor pattern of the circuit board 1003 by solder 1006.

Further, the convex portion 1024 of the shield plate 1023 is electrically connected to a claw 1008 provided on the inner side of another shield cover 1001. Thus, the shield member 1000 is grounded with respect to the shield cover 1004 and the shield cover 1001.
FIG. 11 is an enlarged view of the solder surface terminal 1005 and the claw 1007 used in FIG. The tip portion 1030 of the solder surface terminal 1005 is abutted against the smooth surface 1007A of the claw 1007.
Microfilm of Japanese Utility Model No. 2-36179 (Japanese Utility Model Application No. 3-127388) JP-A-5-328573 JP-A-6-2751979

However, the surface of the solder surface terminal 1005 and the surface of the claw 1007 are necessary for good electrical contact, but the surfaces of the solder surface terminal 1005 and the claw 1007 are nevertheless Due to the reflow soldering during the assembly of the substrate 1003, the substrate 1003 is contaminated by the flux.
Therefore, in order to make electrical contact between the solder surface terminal 1005 and the claw 1007 satisfactorily, the solder surface terminal 1005 is polished by sandpaper or the like by an operator.

12 and 13 show another conventional example. In the example shown in FIGS. 12 and 13, a step 1050 is provided with respect to the surface of the claw 1007.
By providing the stepped portion 1050 on the surface of the claw 1007, the film of the flux adhering to the tip portion 1030 is broken by one edge 1051 of the stepped portion 1050 without polishing the tip portion 1030 of the solder surface terminal 1005. Thus, the solder surface terminal 1005 and the claw 1007 are brought into electrical contact.

However, when the step portion 1050 is press-molded in this manner, the press molding operation is repeated to wear the press machine mold, and it is difficult to provide the minute step portion 1050 on the claw 1007. In some cases, if the stepped portion 1050 is provided for such a small claw 1007, the maintenance frequency of the mold of the press device is very high compared to other portions. For this reason, the manufacturing cost of the shield covers 1004 and 1001 shown in FIG. 10 becomes high, and there is a problem that the mass productivity becomes low.
Therefore, the present invention aims to solve the above problems and provide a case body that can reliably contact the first member and the second member regardless of the adhesion of the flux, and a receiving device including the case body. Yes.

  The case body of the present invention is cut and raised inward from a first terminal portion protruding from a partition plate that divides the inside of the frame-shaped shield member into a predetermined region, and a shield cover that covers the shield member, and the first terminal portion is electrically And a second terminal portion that elastically presses the first terminal portion, the tip of the first terminal portion is formed in a substantially semicircular shape, and the first terminal portion is formed at the tip of the second terminal portion. The contact portion is provided with an elongated hole that is long in the tip direction of the second terminal portion and has a sharp edge on the first terminal portion side, and the width of the elongated hole is that of the first terminal portion. The contact hole has a predetermined width that comes into contact with the front end of the semicircular plate, the elongated hole of the contact portion is orthogonal to the plate surface direction of the first terminal portion, and the sharp edge of the elongated hole of the contact portion is the first terminal portion. The main feature is that it is configured to elastically press against a substantially semi-disc-shaped tip.

  Further, the receiving device including the case body of the present invention is cut and raised inward from the first terminal portion protruding from the partition plate that divides the inside of the frame-shaped shield member into a predetermined region, and the shield cover that covers the shield member, A receiving device including a case body having a second terminal portion that elastically presses the first terminal portion so as to be electrically conductive, wherein the tip of the first terminal portion is substantially semicircular. A contact portion that is formed in a plate shape and that contacts the first terminal portion is provided at the distal end portion of the second terminal portion, and the contact portion has a sharp edge on the first terminal portion side that is long in the distal end direction of the second terminal portion. The elongated hole has a predetermined width that abuts the substantially semi-disc-shaped tip of the first terminal portion, and the elongated hole of the contact portion is in the plate surface direction of the first terminal portion. The sharp edge of the long hole in the contact part is elastically pressed against the substantially semi-disc shaped tip of the first terminal part. It is characterized in that configured so that.

  According to the case body of the present invention, in order for the plurality of sharp edges to mechanically damage the surface of the end portion of the first terminal portion, the deposit film on the surface of the first terminal portion is reliably destroyed, The first terminal portion and the second terminal portion can be reliably brought into electrical contact.

  Further, according to the receiving device including the case body of the present invention, the plurality of sharp edges mechanically damage the surface of the end portion of the first terminal portion, so that the film of the deposit on the surface of the first terminal portion. The first terminal portion and the second terminal portion can be reliably brought into electrical contact with each other.

  The tip of the first terminal portion is formed in a substantially semi-disc shape, a contact portion that contacts the first terminal portion is provided at the tip portion of the second terminal portion, and a long hole is provided in the contact portion. Has a sharp edge on the first terminal portion side that is long in the tip direction of the second terminal portion, and the width of the elongated hole has a predetermined width that comes into contact with the substantially semi-disc shaped tip of the first terminal portion. The long hole of the contact part is orthogonal to the plate surface direction of the first terminal part, and the sharp edge of the long hole of the contact part is elastically pressed against the substantially semi-disc shaped tip of the first terminal part. Thus, a case body and a receiving device that can reliably destroy the film of deposits on the surface of the first terminal portion and reliably make electrical contact between the first terminal portion and the second terminal portion. Realized by configuration.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings.
The embodiment described below is a preferred specific example of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these forms.

FIG. 1 shows a television receiver as an example of an electronic device in which the receiving apparatus of the present invention is mounted.
The television receiver 14 includes a receiving device 10. The receiving apparatus 10 includes a substrate (also referred to as a circuit substrate) 20, and the substrate 20 includes an amplification unit 30, a filter unit 34, a direct conversion unit 36, and a digital demodulation unit 40.
The amplification unit 30, the filter unit 34, the direct conversion unit 36, and the digital demodulation unit 40 are functional blocks formed on the substrate 20. The amplifying unit 30 is connected to the receiving antenna 44 via the connector 90A, and the receiving antenna 44 receives the high-frequency input signal f. The high frequency input signal f is amplified in the amplifying unit 30. The filter unit 34 generates a tuning frequency (local frequency) f.

The direct conversion unit 36 generates a baseband (f−f) by subtracting the local frequency f generated by the filter unit 34 from the high-frequency input signal f. That is, the direct conversion unit 36 has a function of selecting and directly converting the amplified high-frequency input signal f using the local frequency f generated by the filter unit 34 and detecting it.
The digital demodulator 40 has a variable demodulation function that varies the obtained baseband in a range from DC (direct current) to several tens of MHz. The digitally demodulated input signal is subjected to Y / C separation (separation of luminance signal and color signal) through detection, and then the color difference signal is amplified to separate the synchronization signal from the luminance signal. For example, an image is displayed on a cathode ray tube. The voice input signal is output through a speaker after voice detection.

FIG. 2 shows the substrate 20 shown in FIG. 1, the shield member 60 and the shield cover 61 attached to the substrate 20.
3 is an example of a cross-sectional structure of the shield member 60, the substrate 20, the shield cover 61, and the shield cover 63 of FIG. The upper shield cover 63 shown in FIG. 3 is not shown in FIG.
The shield member 60, the shield cover 61, and the shield cover 63 are made by pressing a metal, and are any metal material suitable for shielding high frequency, such as aluminum, zinc, tin, nickel, etc. Made of material or its alloy.
The shield member 60 is also called a shield case, and the substrate 20 is also called a high-frequency circuit board.

  As shown in FIG. 2, the substrate 20 is slightly larger than the size of the shield member 60, but the shield member 60 is fixed to the substrate 20 by, for example, fitting the convex portion of the shield member and the hole of the substrate. . A portion surrounded by the shield member 60 of the substrate 20 is shown in FIG. 3, and the substrate 20 has a plurality of holes 20H.

  In FIG. 2, the shield member 60 has, for example, four side portions 80, 81, 82, 83. These four side portions 80, 81, 82, 83 constitute a frame portion 90. The four side portions 80 to 83 are disposed at the four corners so as to surround a part of the substrate. The side portions 80 and 83 are short side portions, and the side portions 81 and 82 are long side portions. The side parts 80 and 83 are parallel and face each other, and the side parts 81 and 82 are also parallel and face each other. The longitudinal direction of the frame portion 90 is X, and the short direction of the frame portion 90 is Y. The X direction and the Y direction are orthogonal. The direction orthogonal to the X direction and the Y direction is indicated by Z. The Z direction is the width or thickness direction of the side surface portions 80 to 83.

  A plurality of separation surface portions 100, 101, 102, and 103 are arranged in parallel between the side surface portions 80 and 83 of the shield member 60 of FIG. The partition surface portions 100 to 103 are also called shield plates and are parallel to the Y direction. The side surface portion 80 and the partition surface portion 100 partition the amplification unit 30 in FIG. 1, and the partition surface portions 100, 101, and 102 partition the filter unit 34. The delimiter surfaces 102 and 103 delimit the direct conversion unit 36 in FIG. The partition surface portion 103 and the side surface portion 83 partition the digital demodulator 40. The amplifying unit 30, the filter unit 34, the direct conversion unit 36, and the digital demodulating unit 40 shield the high-frequency radiant energy by the separation surface units 100 to 103.

  4 is a perspective view of the shield cover 61 shown in FIG. The shield cover 61 shown in FIG. 4 is formed by punching a plurality of claws 250. These claws 250 are formed by being bent toward the inside of the shield cover 61, and the claws 250 are formed by being punched from the punching hole 253. These claws 250 are formed at positions corresponding to the positions of the protruding portion 300 and the solder surface terminal 200 shown in FIG.

FIG. 5 shows, as an example, an enlarged shape of the electrical connection terminal device 400 which is the case body according to the present invention of FIG.
5 and 3, the electrical connection terminal device 400 includes the terminal portion 310 and the claw 250 described above.
The electrical connection terminal device 400 is for electrically connecting the partition surface portion 100 and the shield cover 61 by contact. The partition surface portion 100 corresponds to the first member, and the shield cover 61 corresponds to the second member.
The terminal portion 310 of the separation surface portion 100 of the shield member 60 is a first terminal portion, and the claw 250 of the shield cover 61 is a second terminal portion.
The first terminal portion 310 has an end portion 311. The end 311 has, for example, a semicircular shape or a semielliptical shape as shown in FIG. On the other hand, the claw 250 has a contact portion 401 and a base portion 410, and the base portion 410 is formed by being bent inward from the shield cover 61. For this purpose, a hole 430 is formed in the shield cover 61.
The contact portion 401 is a free end with respect to the base portion 410, and the contact portion 401 has a function of elastically pressing the end portion 311 of the terminal portion 310 in the P direction.

FIG. 6A shows the cross-sectional shape of the contact portion 401 of the claw 250. The contact portion 401 has a long hole 440. Two sharp edges 450 are formed along the longitudinal direction of the long hole 440 on the upper surface side of the long hole 440. The scratch imparting part 490 has the long hole 440 and two sharp edges 450. As shown in FIG. 6B, when the end portion 311 of the terminal portion 310 is pressed and mechanically contacted with the contact portion 401, the sharp edge 450 of FIG. 6A is attached to the end portion 311. For example, the flux film can be reliably destroyed.
Since there are two sharp edges 450, the two sharp edges 450, 450 abut against the end 311 of the terminal portion 310, so that the flux film at the end 311 can be reliably broken. The width W of the long hole (also referred to as a slit) 440 in FIG. 6B may be approximately equal to the plate thickness t of the contact portion 401, for example, but is not limited thereto.

7 to 9 show an example of a manufacturing process of the contact portion 401 of the claw 250 shown in FIG.
In step ST1 shown in FIG. 7, first, an elongated hole 440A is formed in the contact portion 401 of the outer shape portion of the claw 250 indicated by the two-dot chain line of the plate-like member. The width W1 of the long hole 440A is, for example, 1 mm, and the length F is, for example, 4 mm.

  Next, in step ST2 shown in FIG. 8, the outer shape of the claw 250, which is also called a tab, is cut out from the plate-like member and bent. As a result, the claw 250 is bent from the shield cover 61. In the shield cover 61, a hole 430 is formed. At this time, the width W2 of the contact portion 401 is, for example, 3 mm.

Next, when moving to step ST3 in FIG. 9, the width of the contact portion 401 of the claw 250 is reduced by the force G from the left-right direction. The width W3 of the contact portion 401 formed in this way is, for example, 2.2 mm to 2.4 mm. Further, along with this, the width W4 of the long hole 440 becomes very small, 0.2 mm to 0.3 mm.
Then, as shown in FIGS. 9D and 9C, the tip end portion 441 of the contact portion 401 is bent in the K direction. At this time, as shown in FIG. 9D, the upper end portion 440D of the long hole 440 may hit, and the lower portion 440E of the long hole 440 has a width W4 such as 0.2 mm to 0.3 mm. It only has to be.
Note that the long hole 440A of the contact portion 401 shown in FIG. 8 can be formed using, for example, laser light.

  Thus, for example, as shown in FIG. 5, even if a deposit such as a flux is formed on the end portion 311 of the terminal portion 310 that is the first terminal portion, the scratch imparting portion 490 shown in FIG. Since the adhered film is broken by the plurality of sharp edges 450 of the elongated hole 440, the end portion 311 of the terminal portion 310 and the contact portion 401 of the claw 250 as the second terminal portion are electrically and A mechanically reliable connection is possible. At this time, since the plurality of sharp edges 450 of the contact portion 401 are elastically pressed against the end portion 311 with the force P, this contact state can be made more reliable.

By the way, the present invention is not limited to the above embodiment.
In the embodiment described above, one elongated slot 440 is formed as shown in FIGS. 5 and 9, and the burr-like sharp edges 450 and 450 as shown in FIG. The film of the deposit on the end portion 311 of the terminal portion 310 is formed to be broken.
However, the present invention is not limited to this, and it is of course possible to provide a plurality of grooves on the claw 250 as the second terminal portion to form two or more sharp edges, for example, three, four or more. .
By abutting a plurality of sharp edges against the end of the terminal portion in this way, the film of the deposit can be reliably broken, and the electrical and mechanical connection between the first terminal portion and the second terminal portion is ensured. Can be done.

The electrical connection terminal device 400, which is a case body according to an embodiment of the present invention, has a structure in which the partition surface portion 100 of the shield member 60, which is the first member, and the shield cover 61, which is the second member, are electrically connected reliably. Show.
The present invention is not limited to this, and the electrical connection terminal device of the present invention can be applied as long as the first member and the second member are electrically connected.

  7 to 9 may be sequentially performed in the order of steps ST1, ST2, and ST3, and of course, the steps ST1 to ST3 may be performed at a time.

  As described above, according to the present invention, the first terminal portion of the first member and the second terminal portion of the second member can be reliably contacted regardless of the adhesion of the flux.

1 is a diagram showing a television receiver including a receiving device of the present invention. The perspective view which shows the shield member as a 1st member, the shield cover as a 2nd member, etc. of the receiver of FIG. Sectional drawing in AA of FIG. The perspective view which looked at the shield cover of FIG. 2 from the E direction. The perspective view which shows preferable embodiment of the electrical-connection terminal device which is a case body of this invention. The figure which shows the electrical connection state of the terminal part and claw member of FIG. The figure which shows process ST1 which forms the long hole of the contact part of the nail | claw which is a 2nd terminal part. The figure which shows process ST2 cut and nipped the nail | claw. The figure which shows the state which further narrowed the long hole and bent the nail | claw further. The figure which shows the cross-sectional structural example of the conventional receiver. The figure which shows the example of a connection of the solder surface terminal and nail | claw of the conventional receiver. The figure which shows the example of a connection of another conventional solder surface terminal and a nail | claw. Sectional drawing which shows the connection of the solder surface terminal and nail | claw of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Receiver, 60 ... Shield member (first member), 61 ... Shield cover (second member), 250 ... Claw (second terminal portion), 310 ... Terminal portion ( First terminal portion), 400 ... Case body (electrical connection terminal device), 401 ... Contact portion, 440 ... Elongated hole, 450 ... Sharp edge, 490 ... Scratch imparting portion

Claims (5)

A first terminal portion protruding from a partition plate that divides the inside of the frame-shaped shield member into predetermined regions;
In a case body having a second terminal portion that is cut and raised inward from a shield cover that covers the shield member, and elastically presses the first terminal portion so as to be electrically connected,
The tip of the first terminal portion is formed in a substantially semicircular shape,
A contact portion that contacts the first terminal portion is provided at a tip portion of the second terminal portion,
The contact portion is provided with an elongated hole that is long in the distal direction of the second terminal portion and has a sharp edge on the first terminal portion side, and the width of the elongated hole is substantially semicircular in the shape of the first terminal portion. Has a predetermined width to contact the tip of the
The long hole of the contact portion is orthogonal to the plate surface direction of the first terminal portion, and the sharp edge of the long hole of the contact portion is elastically pressed against the substantially semi-disc-shaped tip of the first terminal portion. A case body configured as described above. The case body according to claim 1, wherein the elongated hole is formed by press working. The case body according to claim 1, wherein the elongated hole is formed by laser processing. The case body according to claim 1, wherein the contact portion is bent toward a side opposite to the first terminal portion. A first terminal portion protruding from a partition plate that divides the inside of the frame-shaped shield member into predetermined regions, and an elastic member that is cut and raised inward from a shield cover that covers the shield member to electrically connect the first terminal portion. A receiving device including a case body having a second terminal portion to be spontaneously pressed;
The case body is
The tip of the first terminal portion is formed in a substantially semicircular shape,
A contact portion that contacts the first terminal portion is provided at a tip portion of the second terminal portion,
The contact portion is provided with an elongated hole that is long in the distal direction of the second terminal portion and has a sharp edge on the first terminal portion side, and the width of the elongated hole is substantially semicircular in the shape of the first terminal portion. Has a predetermined width to contact the tip of the
The long hole of the contact portion is orthogonal to the plate surface direction of the first terminal portion, and the sharp edge of the long hole of the contact portion is elastically pressed against the substantially semi-disc-shaped tip of the first terminal portion. A receiving device including a case body configured as described above.

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