JP5838404B2 - Surface mount clip and assembly structure - Google Patents

Description

  The present invention relates to a surface mount clip that is surface-mounted on a printed circuit board and used for assembling a mounting target component onto the printed circuit board.

  Conventionally, a surface mount clip that is soldered to a printed circuit board and used for assembling a mounting target component such as a shield case to the printed circuit board has been proposed. Use of such a surface mount clip eliminates the need for fixing by soldering or the like when attaching a component to be attached to a printed circuit board, and thus has advantages such as easy attachment and detachment and excellent maintainability.

JP 2005-332953 A

  The surface mounting clip of Patent Document 1 described above is attached to the printed circuit board by sandwiching the mounting target component between the pair of holding spring portions. When fixing the mounting target component using such a surface mount clip, the visual check that the mounting target component is properly sandwiched between the holding springs, the mounting target component itself blocks the view, It has become very difficult because parts are small and densely arranged.

  Moreover, even if one clamping spring part seems to be properly sandwiched, the other clamping spring part may not be properly sandwiched because it is crushed by the parts to be attached at the time of installation. In order to check reliably, it was necessary to see from both sides of the pair of holding springs. However, especially when the part to be attached is a shield case, the inside is completely shielded by the part to be attached and cannot be seen, and the shield case is inserted all the way into the holding spring or the inner holding spring It was very difficult to confirm whether the part was broken.

  An object of the present invention is to propose a surface mount clip that can easily check the assembled state, and an assembly structure using the surface mount clip.

The invention according to claim 1, which has been made in order to solve the above-described problem, is fixed to the back surface of the printed circuit board in which a through-hole into which the columnar insertion portion of the attachment target part can be inserted is formed. A surface mounting clip for fixing the insertion portion inserted from the front surface, the base having a contact surface fixed by soldering to the back surface of the printed circuit board, and the back surface of the printed circuit board through the through hole. presses the protruded insertion portion possess a pressing portion, a for fixing the insertion portion to the printed circuit board, the surface mount clip is in a state where the surface mount clip is fixed to the rear surface of the printed circuit board, wherein It has the part inserted in a through hole, It is characterized by the above-mentioned.

  In the surface mount clip configured as described above, the attachment target component is fixed to the printed circuit board by pressing the insertion portion of the attachment target component with the pressing portion of the surface mount clip. And since the pressing part is arranged on the back surface of the printed circuit board, checking whether the insertion part is inserted to an appropriate position or whether the pressing part is pressing the insertion part properly is a printed circuit board. This can be realized by visually recognizing the back side of the. Moreover, since the main body of the attachment target component is on the surface side of the printed circuit board, it is possible to suppress the view from being blocked by the attachment target component.

  Therefore, in the surface mount clip of the present invention, the visibility of the assembled state of the part to be attached is improved, so that it is possible to easily confirm that it is properly assembled and to find an assembly error. Become.

  In addition, since the insertion part passes through the through hole of the printed circuit board before the insertion part comes into contact with the pressing part, the insertion position is guided by the through hole, so the insertion part is inserted into an incorrect position. Therefore, it is possible to prevent the pressing portion and the like from being deformed. In addition, after assembly, even if an excessive load is applied to the insertion portion, the displacement of the insertion portion is suppressed by the through hole, so that an excessive load is applied to the pressing portion or the like to cause deformation. Can be suppressed.

  In the description of the present invention, the surface of the printed circuit board is the side on which the component to be attached is assembled, that is, the surface on the side where the insertion part is inserted into the through hole, and the back surface of the printed circuit board is the side on which the insertion part protrudes. This is the aspect.

  Surface mount clips can take a variety of shapes. For example, the base portion may be a plate-like member, and the pressing portion may be an arm-like member extending from the end portion of the base portion. Since the surface mount clip configured as described above is prevented from being blocked by the surface mount clip itself, visibility of assembly can be further improved.

  The pressing portion presses the insertion portion to fix the insertion portion to the printed board, but the specific mechanism for the fixing is not particularly limited. When one pressing part is arranged with respect to one insertion part, the insertion part can be pressed against the edge of the through hole by the pressing part, and can be sandwiched and fixed between the edge of the through hole and the pressing part.

  Further, the pressing portion may be composed of a plurality of arm-shaped members, and may be configured to press the insertion portion with the plurality of arm-shaped members. Since the surface mount clip configured in this way can be fixed in position by the pressing portion without using another member (for example, the edge of the through hole), it is affected by the shape of the other member. The insertion portion can be held at an appropriate position.

  In addition, at least a part of the surface mount clip may be inserted into a through hole of the printed circuit board, and a guide portion that guides the moving direction of the insertion portion may be provided. Since the surface mounting clip configured in this way is guided in the moving direction by the guide portion when the insertion portion is inserted into the through hole, the surface mounting clip can be inserted into an appropriate position, and an assembly error can be suppressed. . Further, it can be used for positioning when the surface mount clip is attached to the printed circuit board, and the position accuracy of soldering of the surface mount clip can be improved.

  The guide portion only needs to be at least partially inserted into the through hole, and does not need to be formed so as to pass through the through hole and protrude to the surface of the printed circuit board. However, the guide portion protrudes to the surface of the printed circuit board. By forming the insertion portion, the insertion position can be guided from the beginning of inserting the insertion portion into the through hole.

  The shape of the guide portion is not particularly limited, but for example, it may be a cylindrical shape or a plate shape. When the guide portion is cylindrical, the insertion portion can be guided inside the tube, and the insertion position of the insertion portion can be guided with higher accuracy. When the guide portion is plate-shaped, the guide portion can be bent to press the insertion portion, and the auxiliary function of the pressing portion can be provided.

Further, the invention described in claim 4 made to solve the above-mentioned problem is a printed circuit board provided with a through hole, a mounting target part having an insertion part that can be inserted into the through hole, and An assembly structure comprising the surface mount clip according to any one of claims 1 to 3 .

The constructed assembled structure as in order to use the surface mounting clip according to any one of claims 1 to 3, it is possible to obtain the same advantages as the preceding claims.
Further, in the above assembly structure, the contact surface of the surface mounting clip is fixed to the printed circuit board so as to be electrically connected to the printed wiring provided on the printed circuit board, and the insertion portion is at least a portion in contact with the surface mounting clip. The printed wiring and the plug-in portion may be electrically connected via the surface mounting clip.

  In the assembly structure configured as described above, the printed circuit board and the mounting target component by the surface mounting clip can be electrically connected.

Front view (a), left side view (b), right side view (c), bottom view (d), top view (e), bottom perspective view (f) (g), bottom view of assembly structure of Example 1 AA sectional view of the figure (h) Front view (a), right side view (b), top view (c), bottom view (d), top perspective view (e), bottom perspective view (f), right side view of surface mount clip of Example 1 BB sectional view of (g) Exploded perspective view of assembly structure of embodiment 1 (a) (b) Front view (a), left side view (b), right side view (c), bottom view (d), top view (e), bottom perspective view (f) (g), bottom view of assembly structure of Example 2 CC sectional view (h) of the figure, DD sectional view of the bottom view (i) Front view (a), left side view (b), right side view (c), bottom view (d), top view (e), top perspective view (e), top perspective view of a surface mount clip of Example 2 (F) (h), bottom perspective view (g) (i) Exploded perspective view of the assembly structure of Example 2 (a) (b)

Embodiments of the present invention will be described below with reference to the drawings.
[Example 1]
As shown in FIGS. 1A to 1H, the assembly structure of this embodiment includes a conductive surface mount clip 1, a printed circuit board 3 having a printed wiring (not shown), and a shield case 5 as a mounting target component. And consist of The surface mount clip 1 electrically connects the printed circuit board 3 and the shield case 5 and fixes the printed circuit board 3 and the shield case 5.

  The surface mount clip 1 is shown in FIGS. The surface mount clip 1 is formed by pressing a conductive sheet metal member, and includes flat contact portions 11a to 11c, a flat support portion 17, and a pressing portion 19. .

  The contact portions 11a to 11c and the support portion 17 are on the same plane, and the contact portion 11a, the support portion 17, the contact portion 11b, the support portion 17, and the contact portion 11c are arranged in this order via a narrow connecting portion. Are formed in a row. This arrangement direction is referred to as a longitudinal direction in the description of this embodiment. In addition, the contact parts 11a-11c and the support part 17 respond | correspond to the base in this invention.

  The pressing portion 19 is composed of a pair of arm-shaped members extending from both ends of the support portion 17 in the direction intersecting the longitudinal direction. The pressing portion 19 extends from the both ends of the support portion 17 in the normal direction of the support portion 17, and then bends and approaches the arm-shaped member side that forms a pair with the pressing portion 19. The pressing portion 19 has elasticity, and can be held by sandwiching a later-described insertion portion 25 of the shield case 5 by the pressing portion 19.

  A circular through hole 15 is formed in the support portion 17 described above. The edge of the through-hole 15 is subjected to burring, and a cylindrical tube that rises toward the printed circuit board 3 in the state opposite to the side from which the pressing part 19 extends, that is, when the surface mounting clip 1 is attached to the printed circuit board 3. A portion 13 (corresponding to the guide portion of the present invention) is formed.

  FIGS. 3A and 3B are exploded perspective views of the assembly structure of this embodiment. The printed circuit board 3 is provided with two circular through holes 21. A printed wiring (not shown) is provided around the through hole 21. The through hole 21 is formed so that a later-described insertion portion 25 can be inserted.

  The shield case 5 is a conductive member formed of sheet metal, and is a box shape with the lower side open as shown in FIG. 3 (a), (b), FIG. 1 (h) or the like. In addition, two columnar insertion portions 25 protruding downward from a part of the side wall are provided. Similarly to the shield case 5, the insertion portion 25 has conductivity.

  The through hole 15, the through hole 21, and the insertion portion 25 are provided at corresponding positions. That is, when the surface mounting clip 1 is fixed to the printed circuit board 3, the through hole 15 and the through hole 21 overlap each other. Further, by inserting the insertion portion 25 in this state, the insertion portion 25 is connected to the through hole 21 and the through hole 21. It passes through the through hole 15. When the surface mount clip 1 is fixed to the printed board 3, the cylindrical portion 13 is inserted into the through hole 21.

  The insertion part 25 that has passed through the through hole 21 and the through hole 15 (cylinder part 13) and protruded from the back surface of the printed circuit board 3 is sandwiched between the pair of pressing parts 19 and fixed to the printed circuit board 3. Thereby, the shield case 5 is fixed to the printed circuit board 3.

  The surface mount clip 1 is fixed to the printed circuit board 3 by soldering. When soldering, the back surfaces of the contact portions 11a to 11c (the surface opposite to the side from which the pressing portion 19 extends) are used as soldering surfaces (contact surfaces in the present invention), and the printed wiring of the printed circuit board 3 is used. And make an electrical connection. Therefore, the printed circuit board 3 and the shield case 5 are electrically connected via the surface mount clip 1.

The assembly structure of the present embodiment described above has the following effects.
When the insertion part 25 of the shield case 5 is inserted into the through hole 21 of the printed circuit board 3, the pressing part 19 of the surface mount clip 1 presses the insertion part 25, whereby the shield case 5 is attached to the printed circuit board 3. Fixed.

  At that time, whether the insertion part 25 is inserted to an appropriate position or whether the pressing part 19 is appropriately pressing the insertion part 25 can be visually recognized on the back surface of the printed circuit board 3. Is suppressed, the visibility of the assembled state of the shield case 5 is improved, and it is possible to easily confirm that the shield case 5 is assembled properly and to find an assembly error.

  Further, since the insertion portion 25 passes through the through hole 21 of the printed circuit board 3 before the insertion portion 25 contacts the pressing portion 19, the insertion position is guided by the through hole 21. 25 can be prevented from being inserted into an incorrect position and deforming the pressing portion 19 and the like. In addition, even after an assembly, even if an excessive load is applied to the insertion portion 25, the displacement of the insertion portion 25 is suppressed by the through hole 21, so an excessive load is applied to the pressing portion 19 and the like. Can be prevented from being deformed.

  Further, since the surface mount clip 1 is composed of a plate-like base (contact portions 11a to 11c and a support portion 17) and the pressing portion 19 is arm-shaped, the surface mount clip 1 itself can block the view. Since it is suppressed, the visibility of assembly can be further improved.

Further, since the shield case 5 is fixed by sandwiching the insertion portion 25 by the pressing portion 19 made of a pair of arm-shaped members, the insertion portion 25 can be held at the center of the pressing portion 19.
Moreover, the moving direction of the insertion part 25 can be guided by the cylinder part 13, and the insertion part 25 can be inserted in a suitable position. The cylindrical portion 13 can also be used for positioning when the surface mount clip 1 is attached to the printed circuit board 3, and can improve the positional accuracy when the surface mount clip 1 is soldered to the printed circuit board 3.

[Example 2]
As shown in FIGS. 4 (a) to 4 (i), the assembly structure of this embodiment includes a conductive surface mount clip 31, a printed circuit board 3, and a shield case 5. The printed board 3 has the same configuration except that the shape of the through hole 21 is different from that of the printed board 3 of the first embodiment. The shield case 5 is the same as the shield case 5 of the first embodiment.

  The surface mount clip 31 is shown in FIGS. The surface mount clip 31 is formed by pressing a conductive sheet metal member, is a rectangular flat plate, and has contact portions 33a to 33c arranged so that their longitudinal directions are the same. It has two plate-like connection parts 35 that connect the contact parts 33 a to 33 c, and a pressing part 37 and a guide piece 39 that extend from the connection part 35.

  As shown in FIG. 5 (d), the connecting part 35 connects the vicinity of one end side (left side in the figure) of the contact part 33a and the contact part 33b, and between the contact part 33b and the contact part 33c. The vicinity of the other end side (the right side in the figure) opposite to the one end is connected, and they are formed so as to be aligned on the same plane as a whole. A notch-shaped gap 41 is formed between the contact portions. In addition, the contact parts 33a-33c and the connection part 35 respond | correspond to the base in this invention.

  The pressing portion 37 is an arm-shaped member that extends in the normal direction of the connecting portion 35 from an end portion of the connecting portion 35 opposite to the gap 41 and then bends toward the gap 41 side. As shown in FIG. 5E, the pressing portion 37 reaches above the gap 41 when the connecting portion 35 is viewed from the normal direction.

  The guide piece 39 has a plate shape, and extends from the end of the connecting portion 35 on the side of the gap 41 in the direction opposite to the pressing portion 37 with respect to the plane of the base portion. As can be seen from FIG. 5A and the like, the pressing portion 37 and the guide piece 39 are formed in a cross-sectional shape so that the bent vertex faces the center side of the gap 41.

  The pressing portion 37 and the guide piece 39 have elasticity, and when the printed circuit board 3 and the shield case 5 are fixed by the surface mounting clip 31, the pressing portion 37 and the guide piece 39 connect the insertion portion 25 from the connecting portion 35. Press away. The guide piece 39 corresponds to the guide portion of the present invention.

  FIGS. 6A and 6B are exploded perspective views of the assembly structure of this embodiment. The printed circuit board 3 is provided with two rectangular through holes 21, and the shield case 5 is provided with two columnar insertion parts 25 protruding downward from a part of the side wall.

  The through hole 21, the insertion portion 25, the guide piece 39, and the gap 41 are provided at corresponding positions. That is, when the surface mounting clip 31 is fixed to the printed circuit board 3, the through hole 21 and the gap 41 overlap each other, and the guide piece 39 is inserted into the through hole 21 as shown in FIGS. Then, a part passes and protrudes to the surface of the printed circuit board 3. Furthermore, the insertion part 25 passes the through-hole 21 and the space | gap 41 by inserting the insertion part 25 in the through-hole 21 in the state.

  The insertion part 25 that has passed through the through hole 21 and the gap 41 and protruded from the back surface of the printed circuit board is pressed by the pressing part 37 and pressed against the edge of the through hole 21. In this state, the insertion part 25 is fixed to the printed circuit board 3 by being sandwiched between the pressing part 37 and the edge of the through hole 21. Thereby, the shield case 5 is fixed to the printed circuit board 3.

  The surface mount clip 31 is fixed to the printed circuit board 3 by soldering. When performing soldering, the surface of the contact portions 33a to 33c on the side where the guide piece 39 extends is used as a soldering surface (contact surface in the present invention) and connected to the printed wiring of the printed circuit board 3. Therefore, the printed circuit board 3 and the shield case 5 are electrically connected via the surface mount clip 31.

  In the assembly structure of the present embodiment described above, as in the assembly structure of the first embodiment, is the insertion portion 25 inserted to an appropriate position, or is the pressing portion 37 appropriately pressing the insertion portion 25? , Etc. can be visually recognized on the back surface of the printed circuit board 3, so that the shielding of the visual field by the shield case 5 can be suppressed, and the visibility of the assembled state of the shield case 5 is improved.

Further, similarly to the assembly structure of the first embodiment, the deformation of the surface mount clip 31 can be suppressed.
Further, since the guide piece 39 presses the insertion portion 25, the insertion portion 25 can be fixed to the printed circuit board 3 in cooperation with the pressing portion 37. Further, the printed circuit board 3 and the shield case 5 can be electrically connected by the guide piece 39, and the reliability of the contact can be improved. Since this guide piece 39 protrudes to the surface of the printed circuit board 3, the insertion position can be guided from the beginning when the insertion portion 25 is inserted.

[Modification]
As mentioned above, although the Example of this invention was described, it cannot be overemphasized that this invention can take a various form, as long as it belongs to the technical scope of this invention, without being limited to the said Example at all.

  For example, in the first and second embodiments, the surface mounting clips 1 and 31 that can fix the two insertion portions 25 are illustrated, but one or three or more insertion portions 25 are configured to be fixable. May be.

  Moreover, in the said Example 1, 2, although the structure which fixes the shield case 5 which has the two insertion parts 25 to the printed circuit board 3 was illustrated, the structure of a shield case is not limited to what was described in the Example, but a difference. It can be made into various shapes provided with a recess. Moreover, the structure which attaches attachment object components other than a shield case to a printed circuit board may be sufficient. For example, it is conceivable that an electronic part is a part to be attached and its terminal is an insertion part. In that case, it is good to comprise so that the conductor part of a terminal may contact a surface mount clip.

  Moreover, in Example 1, although the structure pinched | interposed with the press part 19 which consists of two arm-shaped members with respect to the one insertion part 25 was illustrated, even if it is the structure pinched with three or more arm-shaped members, Alternatively, it may be configured to press with a pressing portion made of one arm-like member as in the second embodiment.

DESCRIPTION OF SYMBOLS 1 ... Surface mount clip, 3 ... Printed circuit board, 5 ... Shield case, 11a-11c ... Contact part, 13 ... Tube part, 15 ... Through-hole, 17 ... Support part, 19 ... Press part, 21 ... Through-hole, 25 ... Inserting part, 31 ... Surface mount clip, 33a to 33c ... Abutting part, 35 ... Connecting part, 37 ... Pressing part, 39 ... Guide piece, 41 ... Gap

Claims (4)

A surface-mounting clip that is fixed to the back surface of a printed board on which a through-hole into which a columnar insertion portion of an attachment target component can be inserted is formed and that is inserted from the surface of the printed board. ,
A base portion having a contact surface fixed to the back surface of the printed circuit board by soldering;
Have a, a pressing portion for fixing the insertion portion to the printed circuit board by pressing the insertion portion passes through the through hole to protrude to the rear surface of the printed circuit board,
The surface mount clip has a portion to be inserted into the through hole in a state where the surface mount clip is fixed to the back surface of the printed board . The surface mount clip according to claim 1, wherein the base is a plate-shaped member, and the pressing portion is an arm-shaped member extending from an end of the base. The surface mount clip according to claim 1 or 2 , wherein at least a part of the surface mount clip is inserted into the through hole, and a guide portion for guiding a moving direction of the insertion portion is provided. A printed circuit board provided with a through hole;
A mounting target part having an insertion part that can be inserted into the through hole;
An assembly structure comprising the surface mount clip according to any one of claims 1 to 3 .

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