Double-layer circuit board assembly

Abstract

The utility model provides a double-layer circuit board assembly. The double-layer circuit board assembly comprises a plurality of lower fixing columns, a lower layer plate, a plurality of upper fixing columns and an upper layer plate, each lower fixing column is provided with a fixing end and a connecting end, and the section of the connecting end is smaller than that of the fixing end. The lower layer plate is provided with a plurality of long groove holes which respectively correspond to one of the lower fixing columns. And each slotted hole is used for accommodating one corresponding connecting end. The cross section of each slotted hole is larger than that of the corresponding connecting end, and the cross section of the fixing end is larger than that of the slotted hole. The thickness of the lower layer plate is smaller than the height of each connecting end protruding out of each fixing end. Each upper fixing column is provided with a top end and a bottom end; the bottom end is used for being combined with the connecting end of the upper fixing column. The upper layer plate is fixed on the top ends of the upper fixing columns.

Description

Technical Field

[0001] The utility model relates to circuit board fixing, in particular to a double-layer circuit board assembly. Background Art

[0002] In order to save space occupied by the circuit board, part of the circuit board in the housing of the electronic device will adopt a double-layer structure.

[0003] The circuit board with double-layer structure is to fix the lower layer board to the bottom plate (the bottom of the casing, the main board, etc.) by using the lower fixing column, and then set the upper fixing column on the lower fixing column, and then fix the upper layer board on the upper fixing column.

[0004] The lower plate is usually firmly fixed between the lower fixed column and the upper fixed column, and the upper plate is firmly fixed on the upper fixed column. Therefore, when the lower fixed column is fixed to the base plate, the upper plate and the lower plate are firmly fixed to the base plate and cannot move relative to the base plate.

[0005] However, this configuration often encounters tolerance problems. Due to tolerance problems, the specific structure of the lower board often cannot be properly docked with the counterpart. For example, the connector of the lower board cannot be docked with the corresponding electrical connector. Utility Model Content

[0006] Based on the above technical issues, the purpose of the utility model is to provide a double-layer circuit board assembly, which adopts a stacking design in which the lower layer board is floating and the upper layer board is fixed. The upper layer board can be absolutely fixed to the bottom plate and is not adversely affected by the vibration caused by the floating of the upper layer board.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a double-layer circuit board assembly, including a plurality of lower fixing columns, a lower layer board, a plurality of upper fixing columns and an upper layer board. Each lower fixing column has a fixed end and a connecting end, and the cross-section of the connecting end is smaller than the cross-section of the fixed end. The lower layer board has a plurality of long slot holes, each corresponding to one of the lower fixing columns. Each long slot hole is used to accommodate a corresponding connecting end. The cross-section of each long slot hole is larger than the cross-section of the corresponding connecting end, and the cross-section of the fixed end is larger than the cross-section of the long slot hole. The thickness of the lower layer board is smaller than the height of each connecting end protruding from each fixed end. Each upper fixing column has a top end and a bottom end; the bottom end is used to be combined with the connecting end of the upper fixing column. The upper layer board is fixed to the top ends of the upper fixing columns.

[0008] In at least one embodiment, when the bottom end of the fixing column is coupled to the top of the connecting end, a gap is maintained between the bottom end of the upper fixing column and an upper surface of the lower plate.

[0009] In at least one embodiment, the top of the connecting end has a first fixing hole, and a fixing portion extends from the bottom end of the upper fixing column; the fixing portion is used to pass through one of the long slot holes and be inserted and fixed in the corresponding first fixing hole, so that the bottom end of the upper fixing column is combined with the connecting end of the lower fixing column.

[0010] In at least one embodiment, each first fixing hole is a screw hole, and a surface of each fixing portion is configured with a corresponding thread.

[0011] In at least one embodiment, a second fixing hole is disposed on each top end, and the upper plate has a plurality of through holes, each corresponding to one of the second fixing holes.

[0012] In at least one embodiment, the double-layer circuit board assembly further includes a plurality of fixing members, which are used to pass through each through hole and be inserted into and fixed in the corresponding second fixing holes.

[0013] In at least one embodiment, each second fixing hole is a screw hole, and each fixing member is a screw.

[0014] The utility model adopts a stacking design in which the lower plate is floating and the upper plate is fixed. The floating of the lower plate can ensure the connection between the lower plate and the matching counterpart, while the upper plate does not need to float and remains fixed to reduce the adverse effects of vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an exploded perspective view of a double-layer circuit board assembly according to an embodiment of the present utility model.

[0016] Figure 2 This is another exploded perspective view of the double-layer circuit board assembly according to an embodiment of the present invention.

[0017] Figure 3 It is a three-dimensional diagram of a double-layer circuit board assembly according to an embodiment of the present utility model.

[0018] Figure 4 This is an exploded perspective view of the lower fixing column, the upper fixing column and the fixing member in the embodiment of the utility model.

[0019] Figure 5 It is a partial cross-sectional exploded view of a double-layer circuit board assembly according to an embodiment of the present utility model.

[0020] Figure 6 It is a three-dimensional diagram of the lower fixing column, the upper fixing column and the fixing member in the embodiment of the utility model.

[0021] Figure 7 It is a partial cross-sectional view of a double-layer circuit board assembly according to an embodiment of the present utility model.

[0022] Figure 8It is a partial top view of a double-layer circuit board assembly according to an embodiment of the utility model.

[0023] Fig. 9 Another partial top view of the double-layer circuit board assembly according to an embodiment of the present invention.

[0024] Explanation of the reference numerals: 100: double-layer circuit board assembly; 110: lower fixing column; 112: fixing end; 114: connecting end; 1141: first fixing hole; 120: lower board; 122: long slot hole; 130: upper fixing column; 132: top; 1322: second fixing hole; 134: bottom; 1342: fixing portion; 136: joint; 140: upper board; 150: fixing piece; G: gap; Z: vertical direction; X: horizontal direction; Y: horizontal direction. DETAILED DESCRIPTION

[0025] See also Figure 1 , Figure 2 as well as Figure 3 As shown, a double-layer circuit board assembly 100 provided by an embodiment of the present invention includes a plurality of lower fixing posts 110 , a lower layer board 120 , a plurality of upper fixing posts 130 , an upper layer board 140 and a plurality of fixing members 150 .

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, each lower fixing column 110 has a fixing end 112 and a connecting end 114. The fixing end 112 is used to be fixed to a setting plane, such as the bottom surface inside a housing. The cross section of the connecting end 114 is smaller than the cross section of the fixing end 112. In addition, the top of the connecting end 114 has a first fixing hole 1141.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, the lower plate 120 has a plurality of slotted holes 122, each corresponding to a lower fixing column 110. Each slotted hole 122 is used to accommodate a corresponding connecting end 114, and the cross section of the slotted hole 122 is larger than the cross section of the connecting end 114, and the cross section of the fixing end 112 is larger than the cross section of the slotted hole 122. In addition, a thickness of the lower plate 120 is less than the height of the connecting end 114 protruding from the fixing end 112.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5As shown, the upper fixing column 130 has a top end 132 and a bottom end 134. A second fixing hole 1322 is provided on the top end 132, and a fixing portion 1342 extends from the bottom end 134. The fixing portion 1342 is used to pass through a long slot hole 122 of the lower plate 120, and is inserted into and fixed to the corresponding first fixing hole 1141, so that the bottom end 134 of the upper fixing column 130 is combined with the connecting end 114 of the lower fixing column 110. Specifically, the first fixing hole 1141 is a screw hole, and the surface of the fixing portion 1342 is configured with a corresponding thread.

[0029] like Figure 6 and Figure 7 As shown, the thickness of the lower plate 120 is less than the height of the connecting end 114 protruding from the fixing end 112. Therefore, when the fixing portion 1342 of the upper fixing column 130 passes through the long slot hole 122 of the lower plate 120 and is inserted and fixed in the corresponding first fixing hole 1141, the bottom end 134 of the upper fixing column 130 is combined with the top of the connecting end 114, so that a gap G is maintained between the bottom end 134 of the upper fixing column 130 and the upper surface of the lower plate 120. Therefore, as shown in FIG. Figure 7 As shown, the lower plate 120 is in a floating configuration in the vertical direction Z and can move slightly in the vertical direction Z.

[0030] like Figure 8 and Fig. 9 As shown in FIG. 1 , since the cross section of the long slot hole 122 is larger than the cross section of the connecting end 114, the connecting end 114 can move horizontally in the long slot hole 122 relative to the long slot hole 122. That is, the lower plate 120 can be displaced relative to the lower fixing column 110 in the horizontal direction X / Y. Figure 8 and Fig. 9 As shown, the lower plate 120 is also floatingly arranged in the horizontal direction X / Y, and can move slightly in the horizontal direction X / Y.

[0031] That is, when the lower plate 120 is fixed on the setting plane through the combination of the upper fixing column 130 and the lower fixing column 110, the lower plate 120 is a floating setting, and can be moved in three axes within a small range, and can be matched with the configuration of the counterpart. For example, the position of the lower plate 120 can be slightly adjusted so that its joint 136 can be connected to the joint of the counterpart; or, the position of the lower plate 120 can be slightly adjusted so that its joint 136 can be aligned with the corresponding opening on the casing.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5As shown, the upper plate 140 is fixed to the top ends of the upper fixing columns. Specifically, the upper plate 140 has a plurality of through holes, each corresponding to a second fixing hole 1322 of the upper fixing column 130. The fixing member 150 is used to pass through the through hole and be inserted and fixed to the second fixing hole 1322. Specifically, the second fixing hole 1322 is a screw hole, and the fixing member 150 is a screw.

[0033] like Figure 6 and Figure 7 As shown, the fixing member 150 is configured to firmly fix the upper plate 140 on the upper fixing column 130, so that the upper plate 140 is fixedly configured without floating. Therefore, the upper plate 140 is suitable for being configured as a circuit board that does not need to be directly aligned or docked with the counterpart. For example, when the upper plate 140 and the lower plate 120 are connected through a flexible flat cable, the upper plate 140 does not need to be floated; on the contrary, the lower plate 120 is configured with a connector 136, which must be aligned with the opening of the housing or directly docked with the connector of the counterpart, so the lower plate 120 needs to be floated to facilitate the alignment or docking requirements.

[0034] The utility model adopts a stacking design in which the lower plate 120 floats and the upper plate 140 is fixed. The floating of the lower plate 120 can ensure the connection between the lower plate 120 and the matching counterpart, while the upper plate 140 does not need to float and remains fixed to reduce the adverse effects of vibration.

Claims

1. A double-layer circuit board assembly, characterized in that: Include: A plurality of lower fixing columns; each of the lower fixing columns has a fixing end and a connecting end, and a cross section of the connecting end is smaller than a cross section of the fixing end; A lower plate has a plurality of long slots, each corresponding to one of the lower fixing columns; wherein each of the long slots is used to accommodate a corresponding connecting end, and the cross section of each of the long slots is larger than the cross section of the corresponding connecting end, and the cross section of the fixing end is larger than the cross section of the long slots; a thickness of the lower plate is smaller than the height of each of the connecting ends protruding from each of the fixing ends; A plurality of upper fixing posts; each of the upper fixing posts having a top end and a bottom end; the bottom end being used to be coupled to the connecting end of the upper fixing post; and An upper plate is fixed on the top ends of the upper fixing columns.

2. The double-layer circuit board assembly according to claim 1, characterized in that: When the bottom end of the fixing column is combined with the top of the connecting end, a gap is maintained between the bottom end of the upper fixing column and an upper surface of the lower plate.

3. The double-layer circuit board assembly according to claim 1, characterized in that: The top of the connecting end has a first fixing hole, and a fixing portion extends from the bottom end of the upper fixing column; the fixing portion is used to pass through one of the long slot holes and be inserted and fixed in the corresponding first fixing hole, so that the bottom end of the upper fixing column is combined with the connecting end of the lower fixing column.

4. The double-layer circuit board assembly as claimed in claim 3, characterized in that: Each of the first fixing holes is a screw hole, and a surface of each fixing portion is configured with a corresponding thread.

5. The double-layer circuit board assembly according to claim 1, characterized in that: A second fixing hole is arranged on each of the top ends, and the upper plate has a plurality of through holes respectively corresponding to one of the second fixing holes.

6. The double-layer circuit board assembly according to claim 5, characterized in that: It also includes a plurality of fixing members, which are used to pass through each of the through holes and be inserted into and fixed in the corresponding second fixing holes.

7. The double-layer circuit board assembly according to claim 6, characterized in that: Each of the second fixing holes is a screw hole, and each of the fixing members is a screw.

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