阅读说明：本技术 一种pcb板电气连接组件 (PCB board electrical connection subassembly ) 是由 范家齐 郭亚宁 张志中 武学顺 李卫可 于 2021-07-20 设计创作，主要内容包括：本发明涉及一种PCB板电气连接组件,PCB板电气连接组件包括第一PCB板和第二PCB板；第一PCB板和第二PCB板上均设有沿厚度方向贯穿的通孔,所述通孔的孔壁上设有导电层；PCB板电气连接组件还包括穿设在两块PCB板中通孔内的导体,所述导体与各通孔的导电层导电接触,以实现两块PCB板的电路导通。与现有技术中焊接的方式相比,不存在二次高温解焊风险,消除质量隐患,而且两块PCB板之间可以贴合在一起,散热效果更好,另外当产品需要返工时,拆卸也较为方便。与现有技术中压装弹片的方式相比,不需要对两块PCB板施加过大的压紧力,有利于实现自动化装配,且两块PCB板之间可以贴合在一起,散热效果更好。(The invention relates to a PCB (printed circuit board) electrical connecting assembly which comprises a first PCB and a second PCB; through holes penetrating along the thickness direction are formed in the first PCB and the second PCB, and conducting layers are arranged on the hole walls of the through holes; the PCB electrical connection assembly further comprises conductors which are arranged in the through holes in the two PCBs in a penetrating mode, and the conductors are in conductive contact with the conductive layers of the through holes so as to achieve circuit conduction of the two PCBs. Compared with the welding mode in the prior art, the secondary high-temperature desoldering risk does not exist, the quality hidden danger is eliminated, the two PCB boards can be attached together, the heat dissipation effect is better, and in addition, when a product needs to be returned, the disassembly is also more convenient. Compared with the mode of pressing the elastic sheet in the prior art, excessive pressing force does not need to be applied to the two PCBs, automatic assembly is facilitated, the two PCBs can be attached together, and the heat dissipation effect is better.)

1. A PCB board electrical connection assembly comprising:

a first PCB board (100) and a second PCB board (200); the method is characterized in that:

through holes penetrating along the thickness direction are formed in the first PCB (100) and the second PCB (200), and a conductive layer (500) is arranged on the wall of each through hole;

the PCB electrical connection assembly further comprises conductors penetrating through the through holes in the two PCBs, and the conductors are in conductive contact with the conductive layers (500) of the through holes so as to realize circuit conduction of the two PCBs.

2. The PCB board electrical connection assembly of claim 1, wherein: the conductor is a C-shaped cylinder (600) with an opening at one side, and the C-shaped cylinder (600) is tightly supported in the through holes of the two PCB boards through radial expansion and contraction.

3. The PCB board electrical connection assembly of claim 2, wherein: the inner diameters of the through holes in the first PCB (100) and the second PCB (200) are equal, and the two through holes are coaxially arranged;

the C-shaped cylinder body (600) is provided with a straight cylinder section (602) penetrating into the through holes of the two PCBs, and further comprises stop structures positioned at two ends of the straight cylinder section (602), and the two stop structures are used for being matched with the plate faces of the corresponding PCBs in a stop mode to enable the C-shaped cylinder body (600) to be assembled on the two PCBs in an anti-falling mode.

4. The PCB board electrical connection assembly of claim 3, wherein: the two stopping structures are formed by integrally bending two ends of the straight cylinder section (602) outwards in the radial direction.

5. The PCB board electrical connection assembly of claim 2, wherein: the aperture of the through hole of the first PCB (100) is smaller than that of the through hole of the second PCB (200);

the C-shaped cylinder (600) comprises a first section (606) matched with the through hole of the first PCB (100) and a second section (607) matched with the through hole of the second PCB (200);

and the second section (607) is provided with an elastic arm (608) which can elastically swing along the radial direction of the C-shaped cylinder (600), and the elastic arm (608) is used for contacting with the wall of the through hole of the second PCB (200) to realize circuit conduction.

6. The PCB board electrical connection assembly of claim 5, wherein: one end of the elastic arm (608) which elastically swings in the radial direction is pressed against the surface of the first PCB (100) facing the second PCB (200);

one end of the first section (606) which is far away from the second section (607) is provided with a stopping structure, the stopping structure is in stopping fit with the other side plate surface of the first PCB (100), and is matched with the elastic arm (608) to assemble the C-shaped cylinder (600) on the two PCBs in a falling-off prevention manner.

7. The PCB board electrical connection assembly of claim 6, wherein: the stop structure is a bending stop arm (609) which is integrally and radially bent on the first section (606), the bending stop arm (609) is in stop fit with the first PCB (100), and at least two bending stop arms (609) are arranged at intervals along the circumferential direction.

8. The PCB board electrical connection assembly of claim 7, wherein: one bending stop arm (609) is provided with a bending plate (610), the bending plate (610) is provided with an adsorption plane, and the adsorption plane is used for the adsorption structure to adsorb and grab.

9. The PCB board electrical connection assembly of any of claims 3-8, wherein: the C-shaped cylinder (600) comprises a guide section (605), the guide section (605) is used for guiding the C-shaped cylinder (600) into the through hole of the PCB, and the guide section (605) at least comprises a conical guide part.

10. The PCB board electrical connection assembly of claim 2, wherein: the C-shaped cylinder body (600) is a straight cylinder with the same diameter.

Technical Field

The invention relates to an electrical connection component of a PCB.

Background

In the process of assembling the electric element, sometimes two PCB boards need to be conducted, and the current conduction mode includes two types: in a first manner, as shown in fig. 1, points to be conducted on the first PCB 100 and the second PCB 200 are soldered together to form a solder body 300, and a circuit is conducted through the solder body 300. The second method is as shown in fig. 2, the lower end of the first PCB 100 and the upper end of the second PCB 200 both have points to be conducted, the elastic sheet 400 is pressed between the two points to be conducted, and the circuit conduction of the two PCBs is ensured by the elastic deformation of the elastic sheet 400.

The first mode has the defects that the welding mode is easy to generate secondary high-temperature desoldering risks on components which are respectively welded on the two PCB boards, and hidden quality troubles exist; due to the fact that welding spots exist between the two PCBs, the two PCBs cannot be attached to each other, heat conduction performance between the two PCBs is poor, heat cannot be quickly released from one PCB, heat accumulated in air between the two PCBs cannot be released, and heat dissipation performance is poor; when the product needs to be reworked, the disassembly is difficult. The second approach has the disadvantage that the product is not amenable to automated assembly; the elastic contact between the elastic sheet and the point to be conducted can be ensured only by applying pressure vertical to the board surface between the two PCBs, and the structure is complex; and a large gap exists between the two PCB boards, and the heat dissipation is poor.

Disclosure of Invention

The invention aims to provide an electrical connection component of a PCB with good heat dissipation performance and excellent quality.

In order to achieve the purpose, the technical scheme of the PCB electric connecting component provided by the invention is as follows: a PCB board electrical connection assembly comprising:

a first PCB and a second PCB;

through holes penetrating along the thickness direction are formed in the first PCB and the second PCB, and conducting layers are arranged on the hole walls of the through holes;

the PCB electrical connection assembly further comprises conductors which are arranged in the through holes in the two PCBs in a penetrating mode, and the conductors are in conductive contact with the conductive layers of the through holes so as to achieve circuit conduction of the two PCBs.

Has the advantages that: through opening the through holes on the two PCBs and the conducting layers on the wall of the through holes, the conductors penetrate through the through holes, so that the conductors are in contact with the conducting layers to realize circuit conduction of the two PCBs. Compared with the welding mode in the prior art, the secondary high-temperature desoldering risk does not exist, the quality hidden danger is eliminated, the two PCB boards can be attached together, the heat dissipation effect is better, and in addition, when a product needs to be returned, the disassembly is also more convenient. Compared with the mode of pressing the elastic sheet in the prior art, excessive pressing force does not need to be applied to the two PCBs, automatic assembly is facilitated, the two PCBs can be attached together, and the heat dissipation effect is better.

Preferably, the conductor is a C-shaped cylinder with an opening at one side, and the C-shaped cylinder is tightly supported in the through holes of the two PCB boards through radial expansion and contraction. The C-shaped cylinder body can be tightly supported in the through holes of the two PCB boards by utilizing the radial expansion of the C-shaped cylinder body, the C-shaped cylinder body is elastically contacted with the hole walls of the through holes, the contact reliability is higher, and repeated disassembly and assembly can be realized.

Preferably, the inner diameters of the through holes in the first PCB and the second PCB are equal, and the two through holes are coaxially arranged;

the C-shaped cylinder body is provided with a straight cylinder section penetrating into the through holes of the two PCBs, and further comprises blocking structures located at two ends of the straight cylinder section, and the two blocking structures are used for being matched with the surfaces of the corresponding PCBs in a blocking mode to enable the C-shaped cylinder body to be assembled on the two PCBs in an anti-falling mode. The stop structures at the two ends can ensure that the C-shaped cylinder is reliably assembled on the two PCB boards.

Preferably, the two stopping structures are formed by integrally bending two ends of the straight cylinder section outwards in the radial direction. The stop structures are integrally formed at the two ends of the straight cylinder section, so that the processing is convenient.

Preferably, the aperture of the through hole of the first PCB is smaller than the aperture of the through hole of the second PCB;

the C-shaped cylinder comprises a first section matched with the through hole of the first PCB and a second section matched with the through hole of the second PCB;

and the second section is provided with an elastic arm which can elastically swing along the radial direction of the C-shaped cylinder, and the elastic arm is used for contacting with the wall of the through hole of the second PCB to realize circuit conduction. Corresponding to the inconsistent condition in two PCB board through-hole apertures, through the elastic deformation of playing the arm on the second section, can realize switching on with the contact of second PCB board, can contract and install in the through-hole of two PCB boards through the elastic deformation who plays the arm.

Preferably, one end of the elastic arm which elastically swings in the radial direction is pressed against the surface of the first PCB, which faces the second PCB;

and one end of the first section, which is far away from the second section, is provided with a blocking structure, and the blocking structure is in blocking fit with the other side plate surface of the first PCB and is matched with the elastic arm to assemble the C-shaped cylinder body on the two PCBs in an anti-dropping way. The reliable assembly of the C-shaped cylinder and the two PCB boards is ensured through the matching of the elastic arm and the stop structure.

Preferably, the stop structure is a bending stop arm integrally bent in the radial direction on the first section, the bending stop arm is in stop fit with the first PCB, and at least two bending stop arms are arranged at intervals along the circumferential direction.

Preferably, one of the bending stop arms is provided with a bending plate, the bending plate is provided with an adsorption plane, and the adsorption plane is used for the adsorption structure to adsorb and grab. Through setting up the board of bending, make things convenient for adsorption structure to adsorb and snatch, be convenient for carry out automatic assembly.

Preferably, the C-shaped cylinder comprises a guide section for guiding the C-shaped cylinder into the through hole of the PCB board, the guide section comprising at least a tapered guide portion. The C-shaped cylinder body can penetrate into the through hole of the PCB conveniently through the conical guide section.

Preferably, the C-shaped cylinder body is a straight cylinder with the same diameter.

Drawings

FIG. 1 is a schematic diagram of a first prior art electrical connection;

FIG. 2 is a schematic diagram of a second prior art electrical connection;

fig. 3 is a schematic structural view of an electrical connection component of a PCB board of the present invention in embodiment 1;

FIG. 4 is a schematic structural view of the C-shaped cylinder in FIG. 3;

fig. 5 is a schematic structural view of an electrical connection component of a PCB board in accordance with embodiment 2 of the present invention (the conductive layer is not shown);

FIG. 6 is a schematic view of a disassembled C-shaped cylinder in embodiment 2 of the electrical connection assembly for PCB board of the present invention;

fig. 7 is a schematic structural view of an electrical connection component embodiment 3 of a PCB board according to the present invention;

fig. 8 is a schematic structural view of an electrical connection component of a PCB board according to embodiment 4 of the present invention;

FIG. 9 is a schematic view of the C-shaped barrel of FIG. 8 from a first perspective;

FIG. 10 is a second perspective structural view of the C-shaped cylinder of FIG. 8;

description of reference numerals:

100. a first PCB board; 200. a second PCB board; 300. welding a body; 400. a spring plate; 500. a conductive layer; 600. a C-shaped cylinder; 601. an opening; 602. a straight cylinder section; 603. a first bending section; 604. a second bending section; 605. a guide section; 606. a first stage; 607. a second stage; 608. a spring arm; 609. bending the stop arm; 610. bending the plate; 700. disassembling the sleeve; 800. and a push rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrase "comprising an … …" do not exclude the inclusion of such elements in processes or methods.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.

The present invention will be described in further detail with reference to examples.

The specific embodiment 1 of the electrical connection component of the PCB provided by the present invention:

as shown in fig. 3 and 4, the PCB electrical connection assembly includes a first PCB 100 and a second PCB 200, and in order to conduct the circuit between the two PCBs, through holes are formed in the first PCB 100 and the second PCB 200, and the through holes penetrate through the first PCB 100 and the second PCB 200 along the thickness direction of the PCBs. There are conductive layers 500 in the through holes of the first PCB 100 and the second PCB 200, where the conductive layers 500 are formed by brushing conductive coatings.

The PCB electrical connection assembly further includes a conductor for realizing circuit conduction between the first PCB 100 and the second PCB 200, wherein the conductor is a C-shaped cylinder 600, and an opening 601 is formed in one side of the C-shaped cylinder 600, so that the C-shaped cylinder 600 can be tensioned and contracted along the radial direction of the C-shaped cylinder 600.

In this embodiment, the apertures of the through holes in the first PCB 100 and the second PCB 200 are equal, and the C-shaped cylinder 600 is an equal-diameter cylinder. During the use, penetrate C shape barrel 600 in the through-hole of first PCB board 100, second PCB board 200, rely on the deformation of C shape barrel 600 to fix in the through-hole, realize the electrically conductive contact with conducting layer 500, realize electrical connection. Compared with the welding mode in the prior art, the method has no potential quality hazard, and the two PCB boards can be attached together, thereby being beneficial to heat dissipation. Compared with the mode of adopting the elastic sheet in the prior art, the heat dissipation device does not need to continuously apply pressure by external force and is favorable for heat dissipation.

Embodiment 2 of the electrical connection component for a PCB of the present invention:

as shown in fig. 5 and 6, the present embodiment is different from embodiment 1 in that in embodiment 1, the C-shaped cylindrical body 600 is a straight cylinder having an equal diameter. In this embodiment, the C-shaped cylinder 600 includes a straight cylinder section 602, the outer diameters of the straight cylinder sections 602 are equal, and the straight cylinder section 602 is inserted into the through holes of the first PCB 100 and the second PCB 200, tensioned and fixed, and electrically contacted with the hole walls of the through holes. In order to prevent the C-shaped cylinder 600 from coming out of the through hole, the C-shaped cylinder 600 further includes a first bending section 603 and a second bending section 604 at two axial ends of the straight cylinder 602, wherein the first bending section 603 and the second bending section 604 are bent outward in a radial direction. After bending, the first bending section 603 and the second bending section 604 are both located outside the first PCB 100 and the second PCB 200, the first bending section 603 is in stop fit with the first PCB 100, the second bending section 604 is in stop fit with the second PCB 200, and the C-shaped cylinder 600 can be assembled on the first PCB 100 and the second PCB 200 in a slip-proof manner through the fit of the first bending section 603 and the second bending section 604. Wherein the first bending section 603 is located at the end of the C-shaped cylinder 600.

The C-shaped cylinder 600 is convenient to insert into the through hole and convenient to take off. The C-shaped cylinder 600 further comprises a guiding section 605, the guiding section 605 and the straight cylinder section 602 are respectively disposed at two sides of the second bending section 604, and the overall outer diameter of the guiding section 605 is smaller than the aperture of the through hole in the PCB. The end of the guiding section 605 is an equal-diameter cylinder, a conical guiding part is arranged between the equal-diameter cylinder and the second bending section 604, the outer diameter of the equal-diameter cylinder is equal to the small diameter end of the conical guiding part, when the guiding device is used, the equal-diameter cylinder conveniently penetrates into the through hole, and the conical guiding part guides the second bending section 604 and the straight cylinder section 602 to enter the through hole.

It should be noted that the C-shaped cylinder 600 is a structure that is integrally bent, and is divided only according to the function and the outer shape of each segment.

As shown in fig. 6, the disassembly of the C-shaped cylinder 600 requires a special disassembly tool, which mainly comprises a disassembly sleeve 700 and a ram 800. When the PCB is disassembled, the disassembling sleeve 700 is inserted into the outside of the C-shaped cylinder 600 through the guide section 605, and after the C-shaped cylinder 600 is tightened, the C-shaped cylinder 600 is pushed out of the first PCB 100 and the second PCB 200 by the push rod 800.

In this embodiment, the first bending section 603 and the second bending section 604 are stop structures at two ends of the straight section 602.

Embodiment 3 of the electrical connection component for a PCB of the present invention:

as shown in fig. 7, the difference from embodiment 2 is that in embodiment 2, the part of the C-shaped cylinder 600 located outside the PCB board is long, occupying a large off-board axial space, and in this embodiment, the insertion end of the C-shaped cylinder 600 is recessed into the board. The aperture of the through holes in the first PCB 100 is smaller than the aperture of the through holes in the second PCB 200, and the through holes in the two PCBs are coaxially arranged. The C-shaped cylinder 600 is still an integrally bent structure, the C-shaped cylinder 600 includes a first section 606 and a second section 607, the outer diameters of the first section 606 and the second section 607 are equal, the first section 606 is tensioned in the through hole of the first PCB 100, and is in contact with the hole wall of the through hole of the first PCB 100 to realize conductive communication. A plurality of elastic arms 608 are arranged on the second segment 607, wherein the elastic arms 608 are formed by punching on the side wall of the second segment 607, one end of each elastic arm 608 can elastically swing along the radial direction of the second segment 607, and the elastic arms 608 can swing outwards so as to press against the hole wall of the through hole in the second PCB 200, thereby realizing circuit conduction with the second PCB 200.

As shown in fig. 7, a guiding segment 605 is provided at one end of the second segment 607, and the guiding segment 605 is the same as that in embodiment 2, and will not be described herein. The C-shaped cylinder 600 penetrates through the through hole of the first PCB 100, and in the process of penetrating, when the second segment 607 penetrates through the first PCB 100, the elastic arm 608 contracts, and when penetrating to the second PCB 200, the elastic arm 608 elastically swings outwards. And after the elastic arm 608 swings outwards elastically, one end of the elastic arm 608 is pressed against the plate surface of the first PCB 100, so that the C-shaped cylinder 600 can be prevented from being separated from the first PCB 100 when in use. Meanwhile, in order to prevent the C-shaped cylinder 600 from being separated from the second PCB 200 during use, a bending stop arm (not shown) is further disposed at one end of the first segment 606, and the bending stop arm is in stop fit with the board surface of the first PCB 100 and is in engagement with the elastic arm 608 to mount the C-shaped cylinder 600 on the two PCBs in a separation-proof manner.

In this embodiment, as shown in fig. 7, in order to improve the connection reliability between the C-shaped cylinder 600 and the first PCB 100, the conductive layer 500 is also disposed on the board surface of the first PCB 100, the conductive layer 500 is located at the position of the opening of the through hole in the first PCB 100, and the conductive layer 500 and the bending stop arm 609 on the C-shaped cylinder 600 cooperate to achieve circuit conduction.

In this embodiment, the bent stop arm 609 forms a stop structure on the first segment 606 that cooperates with the spring arm 608 to reliably mount the C-shaped barrel 600 to two PCB boards.

Compared to the approach of example 2, only one end of the C-shaped cylinder 600 is located outside the two PCB boards, and the axial length is smaller.

Embodiment 4 of the electrical connection component for a PCB of the present invention:

as shown in fig. 8 to 10, the difference from embodiment 3 is that in this embodiment, a bending plate 610 is integrally bent on one bending stop arm 609, and the bending plate 610 has a suction plane, so that suction structures such as suction nozzles can be conveniently sucked and mounted during automated production and assembly. The rest of the structure in this embodiment is the same as that in embodiment 3, and is not described herein again.

Embodiment 5 of the electrical connection component for a PCB board of the present invention:

in embodiments 2 to 4, the C-shaped cylinders each have a guide section including a constant diameter cylinder and further including a tapered guide portion. In this embodiment, the guide section comprises only a tapered guide portion. In other embodiments, the guide section is eliminated, and the straight section of the C-shaped cylinder directly penetrates into the through hole.

Embodiment 6 of the electrical connection component for a PCB of the present invention:

in embodiments 2 to 4, the stop structures on the C-shaped cylinder are all integrally and radially bent structures. In this embodiment, the protrusion is punched on the wall of the C-shaped cylinder, and the protrusion is engaged with the stop of the PCB to achieve reliable assembly.

Embodiment 7 of the electrical connection component for a PCB board of the present invention:

in the embodiments 3 and 4, the stopping structure is arranged on the first section of the C-shaped cylinder body. In this embodiment, the stopping structure on the first section is eliminated, and the C-shaped cylinder is tightened and supported in the through hole by elastic deformation of the elastic arm.

Embodiment 8 of the electrical connection component for a PCB board of the present invention:

in embodiment 2, the two ends of the straight cylinder section of the C-shaped cylinder are provided with the blocking structures. In this embodiment, at least one of the stop structures is eliminated.

Embodiment 9 of the electrical connection component for a PCB board of the present invention:

in each of the above embodiments, the conductors penetrating into the two PCB boards are all C-shaped cylinders. In this embodiment, the conductor is the confined barrel, and will be confined barrel and adorn to the through-hole of PCB board in by force, realize the fixed assembly between barrel and the through-hole pore wall.

Embodiment 10 of the electrical connection component for a PCB board of the present invention:

in example 1, the conductive layer in the through hole was formed by brushing a conductive coating. In this embodiment, the conductive layer in the via is formed by electrochemically depositing a metal.

Finally, although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments without departing from the inventive concept, or some of the technical features may be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.