CN209845435U - Card reed connection structure capable of SMT assembly - Google Patents
Card reed connection structure capable of SMT assembly Download PDFInfo
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- CN209845435U CN209845435U CN201920168932.5U CN201920168932U CN209845435U CN 209845435 U CN209845435 U CN 209845435U CN 201920168932 U CN201920168932 U CN 201920168932U CN 209845435 U CN209845435 U CN 209845435U
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- smt
- circuit board
- clamping
- structure according
- clip blade
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Abstract
The utility model discloses a card reed connecting structure capable of being assembled by SMT, which comprises a card reed arranged below a circuit board, wherein the card reed is provided with at least two inward inclined card tongues and a supporting platform, the lower part of a radiating fin is connected with a connecting pin, and the connecting pin comprises a clamping groove; the connecting pin penetrates through the circuit board and the supporting table and extrudes the clamping tongue; the clamping tongue is limited in the clamping groove and clamped in the clamping groove through elastic deformation force; one end of the support platform supports against the lower part of the circuit board, and the other end supports against the clamping tongue downwards. Through the utility model discloses an assembly is accomplished to the application through the structural characteristic of card reed self, has increased installation convenience. Not only can manual installation, can also carry out SMT laminating installation, improved the installation convenience. Meanwhile, the volume of the radiating fin is reduced, and the device layout on the PCB is facilitated; the installation is dismantled conveniently, but reuse, and the installation effectiveness is high.
Description
Technical Field
The utility model relates to a but card reed connection structure of SMT assembly.
Background
Components in existing circuits require heat dissipation. As shown in fig. 1, the conventional heat dissipation connection structure includes a heat sink 1, a circuit board 2, a component 3 to be dissipated, a heat conduction pad 4, and a threaded fastener 5.
Wherein the heat sink 1 is attached to the chip nut 21 on the circuit board 2 by means of the threaded fastener 5, thereby achieving fixation. The prior art requires the placement of the patch nut 21, thereby taking up space on the circuit board 2. Meanwhile, the heat sink 1 is designed to make room for the threaded fasteners on both sides, so that the fins 12 cannot be fully distributed on the base 11, and the heat dissipation effect is poor. And meanwhile, the assembly efficiency of fixing through the threaded fastener 5 is low, and the automatic production is not facilitated.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a but card reed connection structure of SMT assembly in order to overcome among the prior art the easy crowded space that accounts for circuit board and fin of heat dissipation connection structure, and fin assembly efficiency is low, is unfavorable for automated production's defect.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
a card spring sheet connecting structure capable of being SMT assembled comprises a radiating fin and a circuit board, and is characterized in that the card spring sheet connecting structure capable of being SMT assembled further comprises a card spring sheet arranged below the circuit board, the card spring sheet is provided with at least two inward inclined card tongues and a supporting platform, wherein,
a connecting pin is connected to the lower part of the radiating fin and comprises a clamping groove;
the connecting pins penetrate through the circuit board and the supporting table and squeeze the clamping tongues open;
the clamping tongue is limited in the clamping groove and clamped in the clamping groove through elastic deformation force;
one end of the supporting platform props against the lower part of the circuit board, and the other end of the supporting platform props against the clamping tongue downwards.
The clamping spring piece of the scheme is locked through the clamping tongue. The clamping tongue inclines inwards and has elastic deformation force resisting outwards extrusion and downward supporting force. Therefore, the connecting pin is automatically locked by the elastic deformation force of the clamping tongue after being squeezed open, and meanwhile, the connecting pin is pressed downwards by the support force, so that the assembly is completed through the structural characteristics of the clamping spring piece, and the installation convenience is improved. According to the scheme, the self-locking mechanism can be automatically locked by only squeezing the clamping tongue of the connecting pin open when being manually installed, and the installation is convenient. The locking device can also be mounted on a circuit board through SMT, and the locking connection direction of the clamping spring piece is consistent with the direction of the connecting pin penetrating through the circuit board, so that the circuit board can be ensured to be inserted and locked quickly and continuously, and the locking device is suitable for automatic assembly.
In addition, the two ends of the supporting platform respectively support against the circuit board and clamp the clamping tongues of the connecting pins, so that the connecting pins are kept not to move relative to the circuit board through the supporting platform, and the connection stability is ensured.
This scheme make full use of fin below and connect, released the top space of fin, practiced thrift the occupation space of fin. Simultaneously, the scheme only needs to open the hole on the circuit board, thereby saving the space of the circuit board.
Preferably, the latch comprises a slant extension and an adapting portion, wherein,
the inclined part inclines inwards, and the inclined part is abutted against the support platform;
the adapting part is formed at the bottom end of the inclined extending part, and the inner surface of the adapting part is attached to and clamped on the outer surface of the clamping groove.
The oblique extension portion ensures that the clamping tongue has elastic deformation force resisting outward extrusion and downward supporting force. The adaptation portion has increased the area of contact with the block recess through the mode of laminating to can guarantee better tight spacing ability of clamp and decurrent holding power.
Preferably, the clamping groove comprises a circumferential groove surface which is arranged in a surrounding manner, the adapting portion comprises a circumferential adapting end, and the circumferential adapting end is attached to and clamped on the circumferential groove surface.
The contact area perpendicular to the clamping force direction can be increased by the peripheral adaptation end, thereby bringing more clamping force.
Preferably, the clamping groove comprises a downward convex end surface extending outwards, the downward convex end surface is positioned below the peripheral groove surface, the adapting part comprises a downward convex adapting end, and the downward convex adapting end is attached to and abutted against the downward convex end surface.
The support force applied to the lower convex end surface can be increased through the lower convex adapting end, so that the connection pins and the circuit board are relatively fixed more stably.
Preferably, the spring clip further comprises an extension portion, wherein one end of the extension portion extends to the support platform, and the other end of the extension portion extends in a direction away from the connecting pin.
Through will stretch out the portion towards keeping away from the direction of connecting the stitch is torn, can drive brace table and block tongue to keeping away from the direction of connecting the stitch removes to make the block tongue break away from the block recess, make things convenient for the dismantlement of connecting the stitch.
Preferably, the bottom end of the overhang portion is formed with an operating end face. The automatic equipment such as a clamping tool and the like can be conveniently clamped by operating the end face, for example, the sucking disc is used for grabbing, pasting and the like.
Preferably, the extension part is provided with an operation hole. The operation hole can be convenient for calliper to stretch into, through calliper outwards expand the overhang.
Preferably, the supporting platform comprises a supporting portion and a slanted receiving portion, wherein,
the supporting part is propped against the lower part of the circuit board;
one end of the inclined collecting part extends to the supporting part, and the other end of the inclined collecting part extends downwards and towards the direction close to the connecting pins.
The supporting part provides stable supporting capability, and can be attached to the lower side of the circuit board as an attaching surface when SMT is performed.
The oblique tapered portion further provides the latch with an elastic deformation force against the outward pressing and a downward supporting force, further increasing the locking capability.
Preferably, the supporting portion is provided with a through hole, and the connecting pin passes through the through hole.
Preferably, the connecting pins are riveted below the heat sink.
Preferably, the head of the connecting pin is provided with a knurl, and the head of the connecting pin is riveted with the heat sink. The knurling can enhance the tensile strength after being pressed and riveted with the radiating fin
Preferably, the heat sink includes a base and fins located above the base, and the fins are distributed over the base. Therefore, the volume of the radiating fin can be reduced under the condition of ensuring the same radiating capacity.
Preferably, the clamping spring plate is formed by integral punch forming. The design of this scheme through the card reed structure can realize integrative stamping forming, does benefit to card reed's large-scale production and application from this.
Preferably, the clip spring plate is attached to the lower side of the circuit board by SMT. SMT laminating can be fixed the fin with automizing, has greatly improved efficiency. If the clip is SMT-bonded to other components on the circuit board, the number of mounting steps can be further reduced.
An assembly method is characterized in that the assembly method is realized by using the SMT-assembled clamping spring piece connecting structure, and comprises the following steps:
step S1, the clamping spring plate is attached and connected to the lower part of the circuit board through SMT;
step S2, the connecting pin penetrates through the circuit board;
step S3, threading the connecting pin into the supporting table and squeezing the clamping tongue out by the connecting pin;
step S4, continuing to extend into the connecting pins until the clamping tongues clamp the clamping grooves through elastic deformation force;
and step S5, finishing assembly.
In step S1, the mounting process can be further reduced by SMT bonding the clip piece to another component on the circuit board.
The utility model discloses an actively advance the effect and lie in: through the utility model discloses an assembly is accomplished to the application through the structural characteristic of card reed self, has increased installation convenience. Not only can manual installation, can also carry out SMT laminating installation, improved the installation convenience. Meanwhile, the volume of the radiating fin is reduced, and the device layout on the PCB is facilitated; the installation is dismantled conveniently, but reuse, and the installation effectiveness is high.
Drawings
Fig. 1 is an exploded view of a heat dissipation connection structure in the prior art.
Fig. 2 is an exploded view of the SMT-mountable clip spring sheet connection structure according to the preferred embodiment of the present invention.
Fig. 3 is a schematic side view of a SMT-mountable clip spring sheet connection structure according to a preferred embodiment of the present invention.
Fig. 4 is a schematic view of a connection pin structure according to a preferred embodiment of the present invention.
Fig. 5 is a schematic view of the bottom structure of the clip spring according to the preferred embodiment of the present invention.
Fig. 6 is a schematic side view of a clip spring according to a preferred embodiment of the present invention.
Fig. 7 is a schematic view of a three-dimensional structure of a clip spring according to a preferred embodiment of the present invention.
Fig. 8 is a schematic view of a connection structure of the clip spring and the connecting pin according to a preferred embodiment of the present invention.
Fig. 9 is a flow chart of an assembly method according to a preferred embodiment of the present invention.
Detailed Description
The present invention is further illustrated by way of the following examples, which are not intended to limit the scope of the invention.
As shown in fig. 2-8, the present invention discloses an SMT-mountable clip spring sheet connecting structure, which comprises a heat sink 1 and a circuit board 2, and the SMT-mountable clip spring sheet connecting structure of the present embodiment further comprises a clip spring sheet 6 disposed below the circuit board 2, the clip spring sheet 6 having at least two inwardly inclined clip tongues 62 and a supporting platform 61, wherein,
as shown in fig. 2, the heat sink 1 is pressed against the heat-dissipating component 3 on the circuit board 2 via the thermal pad 4 for heat conduction.
Wherein, the lower part of the heat sink 1 is connected with a connecting pin 5, and the connecting pin 5 comprises a clamping groove 52; the connecting pins 5 penetrate through the circuit board 2 and the support table 61 and squeeze open the clamping tongues 62;
as shown in fig. 3 and 8, the latch 62 is limited in the engaging groove 52, and the latch 62 is clamped in the engaging groove 52 by an elastic deformation force; one end of the support base 61 is pressed against the lower side of the circuit board 2, and the other end is pressed downward against the latch 62.
The clip spring 6 of the embodiment is locked by the clip tongue 62. The latch 62 is inclined inward and has an elastic deformation force against outward pressing and a downward supporting force. Therefore, the connecting pin 5 is automatically locked by the elastic deformation force of the latch 62 after being squeezed open, and meanwhile, the connecting pin 5 is pressed downwards by the support force, so that the assembly is completed through the structural characteristics of the latch piece 6, and the installation convenience is improved.
In the embodiment, the self-locking can be realized only by squeezing the connecting pins 5 to open the clamping tongues 62 during manual installation, and the installation is convenient. Can also be mounted on the circuit board 2 by SMT, and the locking connection direction of the clamping spring pieces 6 is consistent with the direction of the connecting pins 5 penetrating through the circuit board 2, so that the circuit board 2 can be inserted and locked in a quick and continuous manner, and the automatic assembly machine is suitable for automatic assembly.
In addition, the two ends of the support platform 61 respectively support against the circuit board 2 and the latch tongue 62 clamping the connection pins 5, so that the support platform 61 keeps the connection pins 5 from moving relative to the circuit board 2, and the connection stability is ensured.
This embodiment make full use of fin 1 below to connect, released the headspace of fin 1, practiced thrift the occupation space of fin 1. Meanwhile, the scheme only needs to open the hole on the circuit board 2, so that the space of the circuit board 2 is saved.
Specifically, as shown in fig. 5, 6 and 7, the latch 62 includes a slanted portion 621 and an adapting portion, wherein,
the inclined part 621 inclines inwards, and the inclined part 621 abuts against the support platform 61; the fitting portion is formed at the bottom end of the inclined portion 621, and the inner surface of the fitting portion is fitted and clamped to the outer surface of the engaging recess 52.
The inclined portion 621 ensures that the latch 62 has an elastic deformation force against the outward pressing and a downward supporting force. The contact area between the adaptive part and the clamping groove 52 is increased in a fitting mode, so that better clamping and limiting capacity and downward supporting force can be guaranteed.
As shown in fig. 4, 7 and 8, the engaging groove 52 includes a circumferential groove surface 521, and the fitting portion includes a circumferential fitting end 622, and the circumferential fitting end 622 is attached to and clamped to the circumferential groove surface 521.
Thereby the contact area perpendicular to the clamping force direction can be increased by the peripheral adaptation end 622, resulting in more clamping force.
As shown in fig. 4, 7 and 8, the engaging groove 52 includes a lower convex end surface 522 extending outward, the lower convex end surface 522 is located below the outer peripheral groove surface 521, the fitting portion includes a lower convex fitting end 623, and the lower convex fitting end 623 is fitted and abutted against the lower convex end surface 522.
The support force exerted on the lower convex end surface 522 can be increased by the lower convex fitting ends 623, thereby resulting in a more stable relative fixation of the connection pins 5 to the circuit board 2.
As shown in fig. 7 and 8, the spring clip 6 further comprises an extension 63, wherein one end of the extension 63 extends to the support base 61 and the other end extends in a direction away from the connecting pin 5.
The overhanging part 63 is pulled towards the direction far away from the connecting pin 5, so that the support table 61 and the latch 62 can be driven to move towards the direction far away from the connecting pin 5, the latch 62 is separated from the clamping groove 52, and the connecting pin 5 is convenient to detach.
As shown in fig. 7 and 8, the bottom end of the overhang 63 is formed with an operation end surface 631. The operation end face 631 can facilitate automatic equipment such as a clamping tool and the like, for example, a sucker for grabbing, pasting and the like. Particularly, the operation end face 631 can be provided with a sucker sticker, so that the sucker sticker can be conveniently grabbed by a washed tray during SMT mounting. The operation end face 631 is a non-sealing face, air leaks when the suction cup sucks air, and the suction cup cannot suck the air, and a sticker similar to a transparent adhesive tape is attached to the face and can be grabbed by the suction cup.
Wherein, the protruding portion 63 is provided with an operation hole 632. The operation hole 632 can facilitate the extension of the caliper, and the extension portion 63 is expanded outwards by the caliper.
The supporting platform 61 of the present embodiment includes a supporting portion 611 and an inclined portion 612, wherein the supporting portion 611 abuts against the lower side of the circuit board 2; the tapered portion 612 extends from one end of the supporting portion 611 and extends from the other end of the supporting portion downward and toward the connecting pin 5.
The support portion 611 provides a stable supporting capability, and can be attached as an attachment surface under the circuit board 2 when SMT attachment is performed.
The tapered portions 612 further provide the latch 62 with a resilient deforming force against the outward pressing and a downward supporting force, further increasing the locking capability.
As shown in fig. 8, in the present embodiment, the supporting portion 611 is formed with a through hole 64, and the connecting pin 5 passes through the through hole 64.
In this embodiment, the connecting pins 5 may be riveted below the heat sink 1. Of course, other connection configurations may be used in other embodiments.
As shown in fig. 4, in the present embodiment, the heads of the connecting pins 5 are provided with knurls 51, and the heads of the connecting pins 5 are riveted with the heat sink 1. The knurls 51 can enhance the drawing resistance strength after being pressed and riveted with the radiating fin 1
As shown in fig. 2 and 3, the heat sink 1 includes a base 11 and fins 12 located above the base 11, and the fins 12 of the present embodiment are distributed over the base 11. This can reduce the volume of the heat sink 1 while ensuring the same heat dissipation capability.
The clip spring 6 of the present embodiment is integrally formed by press molding. In the embodiment, through the design of the structure of the clamping spring piece 6, the integrated punch forming can be realized, so that the large-scale production and application of the clamping spring piece 6 are facilitated.
In this embodiment, the clip sheet 6 may be connected to the lower side of the circuit board 2 by SMT attachment. SMT laminating can be fixed fin 1 with automizing, has greatly improved efficiency. When the clip 6 is SMT-bonded to other components on the circuit board 2, the number of mounting steps can be further reduced.
As shown in fig. 9, the present embodiment further discloses an assembling method, which is implemented by using the SMT-mountable clip spring connecting structure, and includes the following steps:
step S1, the clamping spring plate is attached and connected to the lower part of the circuit board through SMT;
step S2, the connecting pin penetrates through the circuit board;
step S3, threading the connecting pin into the supporting table and squeezing the clamping tongue out by the connecting pin;
step S4, continuing to extend into the connecting pins until the clamping tongues clamp the clamping grooves through elastic deformation force;
and step S5, finishing assembly.
In step S1, the mounting process can be further reduced by SMT bonding the clip piece to another component on the circuit board.
The utility model discloses an actively advance the effect and lie in: through the utility model discloses an assembly is accomplished to the application through the structural characteristic of card reed self, has increased installation convenience. Not only can manual installation, can also carry out SMT laminating installation, improved the installation convenience. Meanwhile, the volume of the radiating fin is reduced, and the device layout on the PCB is facilitated; the installation is dismantled conveniently, but reuse, and the installation effectiveness is high.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. A card reed connecting structure capable of SMT assembly comprises a heat sink and a circuit board, and is characterized in that the card reed connecting structure capable of SMT assembly further comprises a card reed arranged below the circuit board, the card reed is provided with at least two inward inclined card tongues and a supporting platform, wherein,
a connecting pin is connected to the lower part of the radiating fin and comprises a clamping groove;
the connecting pins penetrate through the circuit board and the supporting table and squeeze the clamping tongues open;
the clamping tongue is limited in the clamping groove and clamped in the clamping groove through elastic deformation force;
one end of the supporting platform props against the lower part of the circuit board, and the other end of the supporting platform props against the clamping tongue downwards.
2. An SMT-mountable clip blade connection structure according to claim 1, wherein the clip tongue includes a slanted extension and an adapter portion, wherein,
the inclined part inclines inwards, and the inclined part is abutted against the support platform;
the adapting part is formed at the bottom end of the inclined extending part, and the inner surface of the adapting part is attached to and clamped on the outer surface of the clamping groove.
3. An SMT-mountable clip blade attachment structure according to claim 2, wherein the snap groove includes a circumferentially disposed peripheral groove surface, and the mating portion includes a peripheral mating end that engages and clamps against the peripheral groove surface.
4. An SMT-mountable clip blade connection structure according to claim 3, wherein the snap recesses include outwardly extending convex lower surfaces that underlie the peripheral groove surface, and the adapters include convex lower adapter ends that engage and abut the convex lower surfaces.
5. An SMT-mountable clip blade connection structure according to claim 1, wherein the clip blade further includes an overhang portion, wherein the overhang portion extends at one end to the support ledge and at another end extends away from the connection pins.
6. An SMT-assemblable clip blade attachment structure according to claim 5, wherein a bottom end of the overhang portion is formed with an operative end surface.
7. An SMT-assemblable clip blade attachment structure according to claim 5, wherein the overhang portion has an operation hole formed therein.
8. An SMT-mountable clip blade attachment structure according to claim 1, wherein the support base includes a support portion and a beveled portion, wherein,
the supporting part is propped against the lower part of the circuit board;
one end of the inclined collecting part extends to the supporting part, and the other end of the inclined collecting part extends downwards and towards the direction close to the connecting pins.
9. An SMT-mountable clip blade attachment structure according to any one of claims 1-8, wherein the clip blade is integrally stamped and formed.
10. An SMT-mountable clip blade attachment structure according to any one of claims 1-8, wherein the clip blade is attached to an underside of the circuit board by an SMT fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920168932.5U CN209845435U (en) | 2019-01-30 | 2019-01-30 | Card reed connection structure capable of SMT assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920168932.5U CN209845435U (en) | 2019-01-30 | 2019-01-30 | Card reed connection structure capable of SMT assembly |
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| Publication Number | Publication Date |
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| CN209845435U true CN209845435U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920168932.5U Active CN209845435U (en) | 2019-01-30 | 2019-01-30 | Card reed connection structure capable of SMT assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600915A (en) * | 2019-01-30 | 2019-04-09 | 上海剑桥科技股份有限公司 | Can SMT assembly Clip Reed connection structure and its assembly method |
-
2019
- 2019-01-30 CN CN201920168932.5U patent/CN209845435U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600915A (en) * | 2019-01-30 | 2019-04-09 | 上海剑桥科技股份有限公司 | Can SMT assembly Clip Reed connection structure and its assembly method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210928 Address after: Room 501, building 8, 2388 Chenhang Road, Minhang District, Shanghai 201100 Patentee after: CIG SHANGHAI Co.,Ltd. Address before: 201114 Room 501, building 8, 2388 Chenhang Road, Minhang District, Shanghai Patentee before: CIG SHANGHAI Co.,Ltd. Patentee before: CIG ZHEJIANG Co.,Ltd. |
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| TR01 | Transfer of patent right |