KR101622314B1 - Spacer for PCB assembling and PCB assembly having this - Google Patents

Abstract

The present invention relates to a spacer (300) for assembling a PCB and a PCB assembly having the same. The present invention includes: a spacer body (310) which is located between two PCBs (100,200) and forms a predetermined gap between the PCBs (100,200); insertion posts (340,350) which protrude from at least one of both ends of the spacer body (310), are inserted into an assembling hole (150) of the PCBs (100,200) and have a fastening slot (348) into which a fastening fixture is inserted to be depressed inside; and an assembling key (345) which protrudes from the outer surface of the insertion posts (340,350) and penetrates a key slot (155) formed in the assembling hole (150) of the PCBs (100,200). The present invention improves assembling efficiency of the PCB (100,200) assembly, because the spacer (300) is installed between the PCBs (100,200) to separate the PCBs (100,200) and to provisionally fix the PCBs (100,200) at the same time. Especially, the present invention has an advantage of easily working without pressing or a separate fixture because the spacer (300) rotates to provisionally fix the PCBs (100,200) when the spacer (300) is inserted between the PCBs (100,200).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a spacer for a substrate assembly,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substrate assembly spacer and a substrate assembly, and more particularly, to a substrate assembly in which spacers are provided between circuit boards on both sides and a plurality of substrates are disposed in layers with predetermined spacing.

A circuit board is a thin plate on which electronic components such as integrated circuits, resistors or switches are mounted. The electrical components provided on the circuit board each perform a specific function to perform the driving of the electronic apparatus in which the circuit board is employed. Such a circuit board is often used by stacking a plurality of circuit boards while diversifying the functions of electronic apparatuses.

In general, the substrate assembly has a center board made of a synthetic resin material in the middle, as well as disclosed in the following prior art documents, and a plurality of circuit boards are stacked on both sides of the center board And circuit boards are respectively mounted and configured.

However, since the center board has a size as large as that of the circuit board, the manufacturing cost is high and it takes a lot of space. A plurality of spacers spaced apart from each other are arranged between the circuit boards so that the circuit boards are spaced apart from each other.

However, although these spacers separate the circuit boards from each other, they do not serve to fix the circuit boards. Of course, the spacers may be sandwiched between the two circuit boards by a method such as indentation, but this method has a problem of poor assemblability and difficult maintenance.

Accordingly, there is a need for a spacer in which each component to be mounted on a circuit board is soldered and temporarily fixed between the circuit boards before the two circuit boards are completely fixed, and the temporary fixation and tilting-off operation is facilitated.

Korean Patent No. 10-955056 Korean Patent No. 10-0965508

It is an object of the present invention to provide a spacer between two circuit boards to fix the two circuit boards.

It is another object of the present invention to allow the spacers to be assembled or disassembled between two circuit boards in a rotational manner.

According to an aspect of the present invention, there is provided a semiconductor device comprising: a spacer body positioned between two circuit boards to form a predetermined gap between the two circuit boards; and at least one of both ends of the spacer body An insertion post protruded from one end of the circuit board and inserted into an assembly hole of the circuit board and having a fastening groove into which the fastening hole is inserted; And an assembly key.

The insertion posts and the assembly keys provided on the insertion posts are respectively provided at both ends of the spacer body.

The outer surface of the spacer body, which is not provided with the insertion post, is configured to be engageable with the insertion post so that a plurality of spacers can be stacked.

A locking protrusion is provided on the outer surface of the spacer body or the key groove so that the spacer is fixed to the circuit board.

A grip bar is provided on a side surface of the spacer body, and the grip bar extends in the longitudinal direction of the insertion post, and the upper and lower portions are respectively in contact with the outer surfaces of the two circuit boards.

According to another embodiment of the present invention, there is provided a circuit board comprising: a circuit board on which a mounting hole for mounting a component is formed and an assembly hole is formed in an edge portion; and a circuit board disposed between the circuit board and the circuit board, And a spacer for separating the circuit boards from each other, wherein the spacer includes an insertion post inserted into the assembly hole, and the assembly hole of the circuit board and the insertion post are provided with a key groove and an assembly key corresponding to each other, Can be inserted into the assembly hole only in a certain direction.

In addition, a grip bar is provided on a side surface of the spacer body, and a stopper portion for holding the grip bar is provided on a side surface of the circuit board.

The grip bar extends in the lengthwise direction of the insertion post, and the upper and lower portions are respectively in close contact with the stopper portions of the two circuit boards.

At this time, the side surface of the corner of the circuit board is formed to be curved and has a diameter varying along the movement path of the grip bar of the spacer, so that when the spacer is rotated along the edge of the circuit board, May be in close contact with the outer surface of the corner of the circuit board.

The outer surface of the spacer body, which is not provided with the insertion post, is configured to be engageable with the insertion post so that a plurality of spacers can be stacked.

The outer surface of the circuit board and the outer surface of the spacer body or the key groove are provided with engagement grooves and engagement protrusions corresponding to each other, and the spacer is fixed by inserting the engagement protrusion into the engagement groove in the process of rotating the spacer.

The following effects can be expected in the substrate assembly spacer according to the present invention as described above and the substrate assembly having the same.

In the present invention, spacers are provided between the two circuit boards to separate the circuit boards from each other, and the two circuit boards can be temporarily fixed, thereby improving assembling workability of the circuit board assembly.

In the present invention, since the spacers are sandwiched between the two circuit boards, the two circuit boards are temporarily fixed between the two circuit boards through rotation, or the temporary fixation is released, so that it is possible to easily work without press fitting or separate fasteners.

Further, the present invention can also be applied to a case where a plurality of spacers are continuously laminated to form a laminate of three or more circuit boards, thereby improving the utilization of the spacers.

In the present invention, since the radius of curvature of the edge of the circuit board formed by the curved surface is varied along the rotation path of the spacer, and is fixed firmly to the edge of the circuit board naturally during the rotation of the spacer, There is an effect to be improved.

1 is a perspective view showing a configuration of a preferred embodiment of a substrate assembly having a spacer according to the present invention.
FIG. 2 is a perspective view showing a configuration of a main portion of a first substrate and a second substrate which constitute an embodiment of the present invention. FIG.
3 is a perspective view showing a configuration of a preferred embodiment of the spacer according to the present invention.
4 is a perspective view showing a structure of another embodiment of the spacer according to the present invention.
5 is a perspective view showing a structure of still another embodiment of the spacer according to the present invention.
6 is an exploded perspective view showing another spacer stacked on a spacer according to an embodiment of the present invention;
FIGS. 7 to 9 are assembly flowcharts sequentially showing how the spacer according to the present invention is assembled to a circuit board. FIG.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the understanding why the present invention is not intended to be interpreted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

FIG. 1 is a perspective view of a preferred embodiment of a substrate assembly having spacers according to the present invention.

According to this, the circuit boards 100 and 200 are provided with circuit patterns on their surfaces to electrically connect the electrical components. In this embodiment, the circuit boards 100 and 200 are printed circuit boards (PCBs) PCB). A plurality of the circuit boards 100 and 200 are stacked to form a single circuit board 100 and 200. In this embodiment, two circuit boards 100 and 200 are stacked and used. The two circuit boards 100 and 200 have the same structure. For convenience of explanation, the upper circuit board 100 is given a reference numeral 100 and the lower circuit board 200 is provided with a reference numeral 200 Respectively. Hereinafter, the upper circuit board 100 will be referred to as a first substrate 100, and the lower circuit board 200 will be referred to as a second substrate 200, and the first substrate 100 will be described below.

The skeleton of the first substrate 100 is formed of a body portion 110 made of an insulating material and a circuit pattern is formed on the inside or the surface of the body portion 110. At this time, the body portion 110 may be formed of a plurality of layers, and the circuit pattern may be formed between body portions of several layers. The circuit pattern functions to electrically connect the electrical components mounted on the first substrate 100, and may be formed variously according to the function and design purpose of the first substrate 100. Reference numeral 120 denotes a mounting hole through which a portion for soldering an electrical component is passed.

As shown in FIG. 2, an assembly hole 150 is formed through the corner of the first substrate 100. The assembly hole 150 penetrates the edge of the first substrate 100 and passes through the first post 340 of the insertion posts 340 and 350 of the spacer 300, which will be described below. In this embodiment, the assembly hole 150 is formed in a substantially circular shape, but it is not necessarily limited thereto, and may have various shapes corresponding to the shapes of the insertion posts 340 and 350.

A keyway 155 is formed in the assembly hole 150. The keyway 155 is formed by recessing the inner surface of the assembly hole 150 in the direction of widening the size of the insertion hole. In this embodiment, And are formed as a pair. The keyway 155 corresponds to the assembling key 345 of the spacer 300, which will be described below, and has a shape into which the assembling key 345 can be inserted.

A stopper 160 is provided on one side of the corner of the first substrate 100. The stopper part 160 is formed by protruding a part of a side surface of the first substrate 100. When the spacer 300 is rotated, the grip bar 325 of the spacer 300 is hooked to the spacer 300).

The corner side surface of the first substrate 100 is formed as a curved surface. Since the side surface of the corner is formed as a curved surface, the grip bar 325 of the spacer 300 can be rotated in close contact with the curved surface. In this embodiment, since the assembly holes 150 are formed at four corners of the first substrate 100, the four corners of the first substrate 100 are all curved.

At this time, the side of the edge of the first substrate 100 is formed as a curved surface and has a diameter varying along the movement path of the grip bar 325 of the spacer 300. More precisely, the corner side of the first substrate 100 is formed so that the radius of curvature gradually increases from one side corresponding to the key groove 155 to the stopper 160.

The grasping bar 325 of the spacer 300 is more tightly adhered to the outer surface of the edge of the first substrate 100 while the spacer 300 is rotated along the edge of the first substrate 100, After the spacer 300 has been completely rotated, it can be tightly adhered to the outer surface of the edge to prevent rotation in the opposite direction.

The spacers 300 are disposed between the first substrate 100 and the second substrate 200 and between the first substrate 100 and the second substrate 200, It is preferable that they are made of an insulating material so as to keep them separated from each other.

3, the spacer 300 includes a spacer body 310 forming a skeleton of the spacer 300 and insertion posts 340 and 350 extending to both ends of the spacer body 310. As shown in FIG. do.

The spacer body 310 is formed in a substantially cylindrical shape and is substantially located between the first substrate 100 and the second substrate 200. The distance H1 between the first substrate 100 and the second substrate 200 is determined by the height H2 of the spacer body 310. [

A grip bar 325 is provided on one side of the spacer body 310. The grip bar 325 protrudes from the side surface of the spacer body 310 so that an operator can easily rotate the entire spacer 300 using the grip bar 325. That is, when the spacer 300 is positioned between the first substrate 100 and the second substrate 200, the grasping bar 325 is positioned on the outer side of the first substrate 100 and the second substrate 200 So that the operator can grasp it.

The grip bars 325 extend in the vertical direction, and the upper and lower portions thereof are in close contact with the outer surfaces of the two circuit boards 100 and 200, respectively. 3, the grip bar 325 is provided with a pair of projections (not shown) extending in the up-direction, more precisely the height direction of the spacer body 310, and the projections And is rotated in contact with the outer surfaces of the first substrate 100 and the second substrate 200. As described above, since the curved surface is formed on the corner of the first substrate 100, the projection is rotated in contact with the curved surface of the first substrate 100. Reference numeral 320 denotes a connection portion for connecting the grip bar 325 to the spacer body 310.

Insertion posts 340 and 350 protrude from both ends of the spacer body 310, respectively. The insertion posts 340 and 350 are formed in a cylindrical shape similar to the spacer body 310 and are inserted through the assembly holes 150 and 250 of the first substrate 100 and the second substrate 200 and protrude to the outside. Hereinafter, the upper part of the insertion posts 340 and 350 is referred to as a first post 340 and the lower part of the insertion posts 340 and 350 is referred to as a second post 350.

The first post 340 is inserted into the assembly hole 150 of the first substrate 100 and the second post 350 is inserted into the assembly hole 250 of the second substrate 200. When the spacer 300 is turned upside down, the first post 340 is inserted into the assembly hole 250 of the second substrate 200 and the second post 340 is inserted into the second hole 250 of the second substrate 200. Therefore, The posts 350 may be inserted into the assembly holes 150 of the first substrate 100, respectively. Hereinafter, the first post 340 will be described.

A fastening hole (not shown) may be inserted into the center of the first post 340 so that a fastening hole (not shown) may be inserted. The fastener may be for fixing the circuit board 100, 200 assembly to the inside of a vehicle block or the like.

An assembly key 345 is provided on the outer surface of the first post 340. The assembly key 345 protrudes from the outer surface of the first post 340 and passes through a key groove 155 formed in the assembly hole 150 of the circuit boards 100 and 200. That is, the assembly key 345 is inserted into the assembly hole 150 only in the direction in which the first post 340 is able to pass through the keyway 155 in a specific direction, more precisely the assembly key 345 To be inserted.

Of course, when the spacer 300 is rotated after the first post 340 passes through the assembly hole 150, the assembly key 345 and the key groove 155 are displaced from each other, 340 are prevented from being separated from the assembly hole 150 again. Accordingly, it can be said that the first substrate 100 is precisely inserted into the space between the assembly key 345 and the spacer body 310. This state can be referred to as a state of assembling of the circuit board 100, 200 assembly.

Figs. 4 and 5 show different embodiments of the spacer 300 according to the present invention, respectively. As described above, the spacers 300 may be provided with locking protrusions 315 and 358. The locking protrusions 315 and 358 may be fixed at specific positions in the course of the rotation of the spacer 300.

That is, the latching protrusions 315 and 358 are inserted into the latching grooves (not shown) formed in the first substrate 100 or the second substrate 200 to prevent the spacer 300 from being rotated arbitrarily. 4, the locking protrusion 315 is provided on the spacer body 310, and FIG. 5 shows a state in which the locking protrusion 358 is provided on the assembly key 345. FIG. Of course, the locking protrusions 315 and 358 may be formed on both the spacer body 310 and the assembly key 345.

Fig. 6 shows another embodiment of the spacer according to the present invention. As shown in the figure, the insertion posts 340 and 350 of the spacer 300 may be provided at only one of both ends of the spacer body 310 (the spacer 300 located at the upper portion with reference to FIG. 6, 300 '). The bottom surface of the assembly spacer 300 'on which the insertion post 370 is not provided may be combined with the insertion post 340 of the spacer 300 located at the lower side to stack the plurality of spacers 300 and 300' .

In this case, the assembled spacer 300 is further provided with the third post 370 as well as the first post 340 and the second post 350, and the spacer body 310 is also attached to the first body 310A, And a second body 310B so that the spacers 300 can be used to separate a total of three stacked circuit boards.

More precisely, the second post 350 of the spacer 300 is fitted in the assembly hole 250 of the second substrate 200, and the first post 340 is inserted into the assembly hole 150 of the first substrate 100 The third post 370 of the assembly spacer 300 'is assembled to the third substrate (not shown) after the assembly spacer 300' is assembled to the upper portion of the first post 340, So that a total of three circuit boards can be assembled in a state in which they are spaced apart from each other.

6, an assembly spacer 300 'having an insertion post 370 on only one side of the spacer body 310B is inserted into the spacer 300 of the embodiment shown in FIG. 3 , And a plurality of assembly spacers 300 'provided with the insertion posts 370 on only one side of the spacer body 310B may be connected to each other.

Hereinafter, a process of assembling the spacer and the circuit board according to the present invention will be described in detail with reference to the drawings.

First, the operator mounts the electrical components on the first substrate 100 and the second substrate 200, respectively. Here, electrical components can be various components such as semiconductors and resistors. Also, the first substrate 100 may be a control board for controlling a circuit, and the second substrate 200 may be a power board for supplying power.

When all the components are mounted on the first substrate 100 and the second substrate 200, the operator inserts the second posts 350 of the spacers 300 into the assembly holes 250 of the second substrate 200 . At this time, the assembly key 345 provided on the second post 350 is oriented in the same direction as the key groove 255 formed in the assembly hole 250 of the second substrate 200, Should be inserted. For reference, in this embodiment, a total of four spacers 300 are provided in the circuit board 100 and 200 assemblies, so that all of the spacers 300 must be assembled to the second substrate 200.

Then, the upper part of the first post 340 of the spacer 300 is inserted into the assembly hole 150 of the first substrate 100. The assembly key 345 provided in the first post 340 is aligned with the key groove 155 formed in the assembly hole 150 of the first substrate 100 so that the first post 340).

When the first posts 340 of the four spacers 300 are respectively fitted into the assembly holes 150 of the first substrate 100, the operator rotates the four spacers 300 respectively. More precisely, when the operator rotates the spacer 300 using the grip bar 325 of the spacer 300, the spacer 300 is positioned between the first substrate 100 and the second substrate 200 The first post 340 and the second post 350 are rotated about the rotation axis.

In this case, since the assembly keys 345 and 355 of the spacer 300 are not aligned with the keyways 155 and 255, the spacers 300 are not separated from the first substrate 100 and the second substrate 200, The circuit board 100, 200 assembly is assembled.

At this time, in the process of rotating the spacer 300, the grip bar 325 of the spacer 300 is hooked on the stopper portions 160 and 260 provided on the first substrate 100 and the second substrate 200 It can not be rotated over a certain angle and is fixed.

As described above, if the radius of curvature of the curved surface of the corner of the first substrate 100 is variable, the grasping bar 325 is positioned between the first substrate 100 and the second substrate 100 as the spacer 300 rotates, The first substrate 100 and the second substrate 200 can be firmly fixed to the outer surface (curved surface) of the first substrate 100 and the second substrate 200 because the first substrate 100 and the second substrate 200 are in close contact with the edge of the substrate 200.

In this state, the operator connects jump terminals between the first substrate 100 and the second substrate 200 and solder both ends of the jump terminals to the first substrate 100 and the second substrate 200, 100 and the second substrate 200 are completely assembled and fixed.

In this embodiment, since the first substrate 100 and the second substrate 200 are temporarily fixed by the spacers 300, the assembling process after the assembling of the jump terminals can be facilitated. Particularly, in this embodiment, since the spacers 300 are fixed between the first circuit board 100 and the second circuit board 200 by rotation between the first circuit board 100 and the second circuit board 200, .

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Although the insertion posts 340 and 350 are protruded from both ends of the spacer body 310 in the present embodiment, the insertion posts 340 and 350 may be provided at only one of both ends of the spacer body 310.

100: first substrate 110: first substrate body
120, 220: mounting holes 150, 250:
155, 255: keyway 160, 260:
200: second substrate 210: second substrate body
300: Spacer 300 ': Assembly spacer
310: spacer body 320: grip bar
340: first post 350: second post
345,355: Assembly key

Claims (12)

A spacer body positioned between the two circuit boards to form a predetermined gap between the two circuit boards;
A pair of insertion posts protruding from both ends of the spacer body, respectively inserted into the assembly holes of the two circuit boards, and having a fastening groove into which fastening holes are inserted,
A pair of insertion posts protruding from the pair of insertion posts in a direction orthogonal to a direction in which the insertion posts protrude from the pair of insertion posts, respectively, passing through key grooves formed in the assembly holes of the two circuit boards, And an assembling key of the spacer.
2. The spacer according to claim 1, wherein the insertion posts and the assembly keys provided on the insertion posts are provided at both ends of the spacer body, respectively.
2. The spacer of claim 1, wherein an outer surface of the spacer body on which the insertion post is not provided is engageable with the insertion post, so that a plurality of spacers can be continuously stacked.
The spacer for assembling a substrate according to claim 1, wherein a locking protrusion is protruded from the outer surface of the spacer body or the key groove.
[5] The apparatus as claimed in claim 1, wherein the spacer body is provided with a grip bar on the side of the spacer body, and the grip bar extends in the longitudinal direction of the insert post, Wherein the spacer is removable from the substrate.
A circuit board in which a mounting hole for mounting the component is formed and an assembly hole is formed in the corner portion,
And a spacer positioned between the circuit board and the circuit board stacked thereon to separate the two circuit boards from each other,
A pair of insertion posts inserted into the assembly holes are provided at both ends of the spacer,
Wherein the assembly holes of the two circuit boards and the pair of insertion posts are provided with key grooves and a pair of assembly keys respectively corresponding to each other so that the insertion posts can be inserted into the assembly holes only in a certain direction,
Wherein the pair of assembly keys comprises spacers that are seated on an outer surface of the two circuit boards when the spacers are rotated after passing through the keyways of the two circuit boards.

7. The apparatus of claim 6, wherein the spacer
A spacer body positioned between the two circuit boards and forming a predetermined gap between the two circuit boards;
A pair of insertion posts protruding from both ends of the spacer body, respectively inserted into the assembly holes of the two circuit boards, and having a fastening groove into which fastening holes are inserted,
A pair of assemblies protruding from the pair of insertion posts in a direction orthogonal to a direction in which the insertion posts are protruded and being respectively mounted on the outer surfaces of the two circuit boards after passing key grooves formed in the assembly holes of the two circuit boards, And a spacer comprising a key.
8. The substrate assembly of claim 7, wherein a spacer bar is provided on a side surface of the spacer body, and a stopper portion to which the grip bar is attached is provided on a side surface of the circuit board.
9. The substrate assembly of claim 8, wherein the grip bar extends in the longitudinal direction of the insert post such that the upper and lower portions are respectively in close contact with the stopper portions of the two circuit boards.
10. The circuit board according to claim 8 or 9, wherein the corner side surface of the circuit board is formed as a curved surface having a diameter varying along the movement path of the grip bar of the spacer, and the spacer is rotated along an edge portion of the circuit board Wherein the grip bar is tightly and intimately attached to an outer surface of the edge of the circuit board.
[8] The substrate assembly of claim 7, wherein an outer surface of the spacer body, which is not provided with the insertion post, is engageable with the insertion post so that a plurality of spacers can be stacked.
[8] The apparatus of claim 7, wherein the circuit board and the outer surface of the spacer body or the keyway are provided with engagement grooves and engagement protrusions corresponding to each other so that the spacer is fixed by inserting the engagement protrusion into the engagement groove in the process of rotating the spacer Wherein the spacers are spaced apart from each other.

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