CN111586968A

CN111586968A - Modular PCB assembly

Info

Publication number: CN111586968A
Application number: CN202010292885.2A
Authority: CN
Inventors: 萧永慈; 吕邦红; 刘维; 张立
Original assignee: Dongguan Wanjun Electronic Technology Co ltd
Current assignee: Dongguan Wanjun Electronic Technology Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-08-25
Anticipated expiration: 2040-04-15
Also published as: CN111586968B

Abstract

The present invention relates to a modular PCB assembly comprising: the mainboard is provided with an accommodating groove at one end, a plurality of inserting holes are arranged on the inner wall of the mainboard corresponding to the accommodating groove at intervals, and the wall of each inserting hole is plated with a conductive layer; the expanding plate comprises an expanding plate body, a boss, a plurality of connecting terminals, a spring and a push block; one end of the spring abuts against the connecting terminal, the other end of the spring abuts against the inner wall of the boss, the spring is used for pushing the connecting terminal to stretch out of the boss and then to be inserted into the inserting hole, and the connecting terminal abuts against the conducting layer; the push block penetrates into the boss and then is connected with each connecting terminal. Above-mentioned modularization PCB board subassembly, simple structure, it is convenient to connect, and through the location relation of boss and holding tank, connecting terminal inserts and locates in the spliced eye, and the conducting layer butt of connecting terminal and spliced eye can realize extending the board and be connected with the electricity of mainboard, can effectively increase the joint strength between the different plates, guarantees the stability of electricity connection.

Description

Modular PCB assembly

Technical Field

The invention relates to the technical field of electronic circuit boards, in particular to a modularized PCB assembly.

Background

Along with the continuous development and progress of society, electronic products are more and more in people's daily life, and all electronic products inside all have a mainboard, and the mainboard is formed by electronic material on the installation of PCB board paster.

At present, in order to pursue the profit margin of electronic products, manufacturers of research and development designs of electronic products must reduce the research and development costs on the premise of ensuring the quality of the electronic products, and a main board structure as a large component in the electronic products must also be the objective of reducing the costs. Traditional connected mode is connected different PCB boards through connecting wire or FPCB, and it is unstable inadequately to connect between the different PCB boards, appears the acting as go-between easily and leads to contact failure.

Disclosure of Invention

Based on the structure, the modularized PCB assembly provided by the invention is simple in structure and convenient to connect, and can effectively increase the connection strength between different plates and ensure the stability of electric connection.

In order to realize the purpose of the invention, the invention adopts the following technical scheme:

a modular PCB assembly comprising:

a main board; an accommodating groove is formed in one end of the main board, a plurality of inserting holes are formed in the inner wall, corresponding to the accommodating groove, of the main board at intervals, and conducting layers are plated on the hole walls of the inserting holes; and

the extension board is used for connecting the main board; the expansion board comprises an expansion board body, a boss connected to one surface of the expansion board body, a plurality of connecting terminals installed in the boss at intervals, springs respectively sleeved at one ends of the connecting terminals, and a push block movably installed on one surface of the expansion board body, which faces away from the boss; one end of the spring abuts against the connecting terminal, the other end of the spring abuts against the inner wall of the boss, the spring is used for pushing the connecting terminal to protrude out of the boss and then to be inserted into the inserting hole, and the connecting terminal abuts against the conducting layer; the push block penetrates into the boss and then is connected with the connecting terminals.

Above-mentioned modularization PCB board subassembly, simple structure, it is convenient to connect, and through the location relation of boss and holding tank, connecting terminal inserts and locates in the spliced eye, and the conducting layer butt of connecting terminal and spliced eye can realize extending the board and be connected with the electricity of mainboard, can effectively increase the joint strength between the different plates, guarantees the stability of electricity connection.

In one embodiment, a plurality of through holes are formed in one side surface, close to the main board, of the boss at intervals, and the through holes correspond to the connecting terminals one to one; the through hole is used for accommodating the connecting terminal and the spring.

In one embodiment, the connecting terminal comprises a shaft body, a blocking part and an adapter part, wherein the blocking part extends outwards from the circumferential direction of the outer surface of the shaft body; the switching part is used for connecting the push block; the blocking portion is used for abutting against one end of the spring.

In one embodiment, the length of the shaft body is less than the length of the through hole.

In one embodiment, a recess is formed in one surface of the expansion plate body, which faces away from the boss, the recess is arranged opposite to the boss, and a plurality of sliding grooves are formed in the expansion plate at intervals on one side corresponding to the recess; the sliding groove is communicated with the through holes, and the sliding groove corresponds to the through holes one to one.

In one embodiment, the push block comprises a push part and a plurality of push rods which are connected to one surface of the push part at intervals; the pushing portion is correspondingly accommodated in the recess, and the push rod penetrates through the sliding groove and then is connected with the switching portion.

In one embodiment, a latch is convexly arranged on one side of the expansion plate body corresponding to the recess; one side of the pushing part is provided with a notch, and the notch is buckled with the clamping teeth.

In one embodiment, a plurality of fastening holes are formed on the main board at intervals corresponding to the periphery of the accommodating groove; the expansion plate further comprises a plurality of buckling feet which are connected to the periphery of the boss at intervals, and the buckling feet are used for being buckled with the buckling holes.

In one embodiment, the number of the fastening holes is four, and the number of the fastening feet is four.

In one embodiment, the insertion holes are circular holes.

Drawings

FIG. 1 is a schematic perspective view of a modular PCB assembly in accordance with one embodiment of the present invention;

FIG. 2 is a perspective view of the modular PCB board assembly shown in FIG. 1 from another perspective;

FIG. 3 is an exploded schematic view of the modular PCB assembly shown in FIG. 1;

FIG. 4 is an enlarged schematic view taken at circle A of FIG. 3;

FIG. 5 is a perspective view of another perspective of the motherboard of the modular PCB assembly shown in FIG. 3;

FIG. 6 is an exploded view of another application of a spreader plate in the modular PCB plate assembly shown in FIG. 3;

FIG. 7 is a schematic view of the assembly of the connection terminals and springs in the modular PCB assembly shown in FIG. 1;

fig. 8 is a partial cross-sectional view of the modular PCB assembly shown in fig. 1.

Reference is made to the accompanying drawings in which:

10-main board, 11-main board body, 12-main control chip, 13-accommodating groove, 14-plug hole and 15-buckle hole;

20-expansion board, 21-expansion board body, 22-boss, 220-perforation, 23-connecting terminal, 231-body, 232-blocking part, 233-switching part, 24-spring, 25-pushing block, 251-pushing part, 252-pushing rod, 253-notch, 26-recess, 27-sliding groove, 28-latch and 29-fastening pin.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 8, a modular PCB assembly according to an embodiment of the present invention includes a main board 10 and an expansion board 20 for connecting the main board 10.

The main board 10 includes a main board body 11, a main control chip 12 mounted on one side of the main board body 11, and a plurality of electronic components (not shown) mounted on the main board body 11. Holding tank 13 has been seted up to mainboard body 11's one end, and spaced apart on mainboard body 11 corresponds holding tank 13's the inner wall and is equipped with a plurality of spliced eyes 14. In this embodiment, the inserting hole 14 is located on an inner wall of the accommodating groove 13 on a side close to the main control chip 12, a conductive layer (not shown) is plated on a hole wall of the inserting hole 14, and the conductive layer is electrically connected to an internal circuit of the main board 10, so that the inserting hole 14 can be electrically connected to the main control chip 12.

The main board body 11 is provided with a plurality of fastening holes 15 at intervals corresponding to the periphery of the receiving groove 13, and the fastening holes 15 are used for fastening the expansion board 20. In this embodiment, the number of the fastening holes 15 is four, two fastening holes 15 are located on one side of the receiving groove 13, and the other two fastening holes 15 are located on the other side of the receiving groove 13.

Further, in the present embodiment, the insertion hole 14 is a circular hole; in other embodiments, the plug hole 14 may be a rectangular hole, a triangular hole, or another shape of hole.

In this embodiment, the insertion holes 14 are uniformly spaced, and the number of the insertion holes 14 is nine. It is understood that, in other embodiments, the insertion holes 14 may also be disposed at non-uniform intervals, so that the insertion holes 14 have a fool-proof effect, and only the expansion board 20 matched with the insertion holes 14 can be connected, thereby improving the safety of connection.

The extending plate 20 includes an extending plate body 21, a boss 22 connected to one side of the extending plate body 21, a plurality of connecting terminals 23 installed at intervals in the boss 22, springs 24 respectively sleeved at one ends of the connecting terminals 23, and a push block 25 movably installed on one side of the extending plate body 21 opposite to the boss 22. As shown in fig. 7 and 8, one end of the spring 24 abuts on the connection terminal 23, the other end of the spring 24 abuts on the inner wall of the boss 22, and the spring 24 is used for pushing the connection terminal 23 to protrude outside the boss 22. The push block 25 is inserted into the boss 22 and connected to the connection terminals 23.

A plurality of through holes 220 are spaced apart from one side of the boss 22 close to the motherboard 10, the through holes 220 extend from one side of the boss 22 to the inside of the boss 22, the through holes 220 correspond to the connection terminals 23 one to one, and the through holes 220 are used for accommodating the connection terminals 23 and the springs 24.

Specifically, in the present embodiment, the connection terminal 23 includes a shaft body 231, a blocking portion 232 extending from an outer surface of the shaft body 231 in a circumferential direction, and an adapter portion 233 connected to one side of the shaft body 231; the adapter 233 is used to connect the push block 25. As shown in fig. 6 and 7, the spring 24 is sleeved on one end of the shaft body 231, one end of the spring 24 abuts against the stopping portion 232, and the other end of the spring 24 abuts against the inner wall of the boss 22, so that the shaft body 231 can be pushed by the spring 24 to protrude outside the boss 22. Here, the length of the shaft body 231 is smaller than that of the through hole 220.

Referring to fig. 4 again, a recess 26 is formed on a surface of the extending plate body 21 facing away from the boss 22, and the recess 26 is disposed opposite to the boss 22. A plurality of sliding grooves 27 are formed on the expansion board body 21 at intervals corresponding to one side of the recess 26, and a latch 28 is convexly formed on the expansion board body 21 corresponding to the other side of the recess 26. The sliding grooves 27 are communicated with the through holes 220 downwards, and the sliding grooves 27 correspond to the through holes 220 one by one; the sliding groove 27 is used for accommodating the adapter 233 to penetrate. The latch 28 is used for latching the limit push block 25.

Specifically, in the present embodiment, the pushing block 25 includes a pushing portion 251 and a plurality of pushing rods 252 connected to one surface of the pushing portion 251 at intervals. The pushing portion 251 is correspondingly accommodated in the recess 26, and the push rod 252 is connected with the adapting portion 233 after penetrating through the sliding groove 27, so as to realize the fixed connection between the push block 25 and the connection terminal 23. Further, a notch 253 is formed at one side of the pushing portion 251, and the notch 253 is used for corresponding to the latch 28. When the expansion board 20 and the main board 10 are not assembled, the notch 253 is kept buckled with the latch 28, and the spring 24 is in a compressed state.

When assembling, the boss 22 is correspondingly accommodated in the accommodating groove 13, the buckling relationship between the pushing portion 251 and the latch 28 is released, the connecting terminal 23 is protruded outside the boss 22 and then inserted into the inserting hole 14 under the action of the spring 24, and the shaft body 231 abuts against the conductive layer of the inserting hole 14. Because the shaft body 231 is electrically connected with the internal circuit of the expansion board 20, after the shaft body 231 is abutted with the conductive layer of the plug-in hole 14, the electric communication between the expansion board 20 and the main board 10 can be realized, a connecting wire is omitted, the problem of identifying a socket is also omitted, and the method is simple and rapid. The pushing portion 251 is located on the side of the recess 26 close to the main board 10. In this connection relationship, even if the main board 10 and the expansion board 20 are relatively inclined, as long as one end of the connection terminal 23 is inserted into the insertion hole 14, the shaft body 231 is ensured to abut against the conductive layer of the insertion hole 14, and the connection stability is ensured.

When the assembly is released, the driving portion 251 moves away from the main board 10 until the notch 253 is engaged with the latch 28, so as to drive the connection terminal 23 to be completely retracted into the boss 22, the shaft 231 is not in contact with the conductive layer of the insertion hole 14, i.e., the electrical path between the expansion board 20 and the main board 10 is broken, and at this time, the spring 23 is in a compressed state.

In this embodiment, the pushing portion 251 is made of a plastic material and has a certain ductility.

In this embodiment, the expansion board 20 further includes a plurality of fastening legs 29 connected to the periphery of the boss 22 at intervals, and the fastening legs 29 are configured to be fastened with the fastening holes 15, so as to connect the expansion board 20 and the main board 10, improve the integration degree of the expansion board 20 and the main board 10, and enhance the connection strength between the expansion board 20 and the main board 10. In the present embodiment, the number of the fastening legs 29 is four, wherein two fastening legs 29 are located on one side of the boss 22, and the other two fastening legs 29 are located on the other side of the boss 22.

Above-mentioned modularization PCB board subassembly, simple structure, it is convenient to connect, and through boss 22 and holding tank 13's location relation, connecting terminal 23 inserts and locates in spliced eye 14, and connecting terminal 23 can realize extending board 20 and mainboard 10's electricity with the conducting layer butt of spliced eye 14 and be connected, can effectively increase the joint strength between the different plates, guarantees the stability of electricity connection.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A modular PCB assembly, comprising:

a main board; an accommodating groove is formed in one end of the main board, a plurality of inserting holes are formed in the inner wall, corresponding to the accommodating groove, of the main board at intervals, a conductive layer is plated on the hole wall of each inserting hole, and the conductive layer is electrically connected with an internal circuit of the main board; and

the extension board is used for connecting the main board; the expansion board comprises an expansion board body, a boss connected to one surface of the expansion board body, a plurality of connecting terminals installed in the boss at intervals, springs respectively sleeved at one ends of the connecting terminals, and a push block movably installed on one surface of the expansion board body, which faces away from the boss; the connecting terminal is electrically connected with an internal circuit of the expansion board; one end of the spring abuts against the connecting terminal, the other end of the spring abuts against the inner wall of the boss, the spring is used for pushing the connecting terminal to protrude out of the boss and then to be inserted into the inserting hole, and the connecting terminal abuts against the conducting layer; the push block penetrates into the boss and then is connected with the connecting terminals.

2. The modular PCB assembly of claim 1, wherein a plurality of through holes are formed at intervals on one side surface of the boss close to the main board, and the through holes correspond to the connecting terminals one by one; the through hole is used for accommodating the connecting terminal and the spring.

3. The modular PCB assembly of claim 2, wherein the connection terminal comprises a shaft body, a blocking portion extending from an outer surface of the shaft body in a circumferential direction, and an adaptor portion connected to one side of the shaft body; the switching part is used for connecting the push block; the blocking portion is used for abutting against one end of the spring.

4. The modular PCB board assembly of claim 3, wherein the shaft has a length less than a length of the through hole.

5. The modular PCB assembly of claim 3, wherein a recess is formed in a surface of the extending plate body facing away from the boss, the recess is opposite to the boss, and a plurality of sliding grooves are formed in the extending plate at intervals on a side corresponding to the recess; the sliding groove is communicated with the through holes, and the sliding groove corresponds to the through holes one to one.

6. The modular PCB board assembly of claim 5, wherein the push block comprises a push portion and a plurality of push rods connected to one surface of the push portion at intervals; the pushing portion is correspondingly accommodated in the recess, and the push rod penetrates through the sliding groove and then is connected with the switching portion.

7. The modular PCB assembly of claim 5, wherein a latch is convexly disposed on a side of the extended plate body corresponding to the recess; one side of the pushing part is provided with a notch, and the notch is buckled with the clamping teeth.

8. The modular PCB assembly of claim 1, wherein the main board has a plurality of fastening holes spaced apart from each other corresponding to the circumference of the receiving groove; the expansion plate further comprises a plurality of buckling feet which are connected to the periphery of the boss at intervals, and the buckling feet are used for being buckled with the buckling holes.

9. The modular PCB assembly of claim 8, wherein the number of the fastening holes is four and the number of the fastening feet is four.

10. The modular PCB assembly of claim 1, wherein the mating holes are circular holes.