Combined circuit board structure

Abstract

A combined circuit board structure comprises a main board and at least one auxiliary board. Anti-rollover electrical connection through grooves are formed in the edge of the front face of the main board in a one-to-one correspondence mode according to the number of the auxiliary boards, the side ends of the auxiliary boards are inserted into the anti-rollover electrical connection through grooves, the front faces or the back faces of the auxiliary boards abut against discrete components of the main board, and the anti-rollover electrical connection through grooves clamp and fix the side ends of the auxiliary boards; the problems that the welding quality is poor and the welding efficiency is low due to the fact that the auxiliary plate is laterally turned during insertion are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board structures, in particular to a combined circuit board structure. Background Art

[0002] A combined circuit board, also known as a combined wiring board or an assembled circuit board, is a special type of circuit board design. It allows engineers or designers to create a complete circuit system by combining different circuit board modules or components. For example, a circuit board with a larger circuit system serves as the main board, and a circuit board with a smaller circuit system serves as the sub-board. Electrically connecting through slots are opened on the main board, and the sub-board is plugged into the electrically connecting through slots and fixed by soldering to achieve electrical connection between the main board and the sub-board, thereby forming a combined circuit board. The design of this circuit board has a high degree of flexibility and customizability, enabling it to be customized according to specific application requirements.

[0003] However, since the sub-board of the combined circuit board needs to be plugged into the main board for soldering, and the plug-in pins of the sub-board should not be set too long to occupy too much space, this results in insufficient support force of the plug-in pins of the sub-board before soldering fixation. The sub-board may tip over due to uneven distribution of its own gravity (such as components protruding from the circuit board), making it impossible to pass through the machine for automated soldering smoothly, or manual straightening is required during manual soldering to solder smoothly, which is not convenient for soldering; especially when there are no main board components against the sub-board after it is plugged in, the tipping will be more serious, resulting in poor soldering quality and low soldering efficiency. Summary of the Utility Model

[0004] Aiming at the above defects, the purpose of the utility model is to provide a combined circuit board structure, which solves the problems of poor soldering quality and low soldering efficiency caused by the tipping of the sub-board during plugging.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A combined circuit board structure includes a main board and at least one sub-board; on the front edge of the main board, anti-tipping electrically connecting through slots are provided in one-to-one correspondence with the number of sub-boards. The side end of the sub-board is plugged into the anti-tipping electrically connecting through slots, the front or back of the sub-board abuts against discrete components of the main board, and the anti-tipping electrically connecting through slots clamp and fix the side end of the sub-board.

[0007] Furthermore, the anti-tipping electrically connecting through slots are special-shaped slots with one or more special-shaped parts, and the special-shaped parts are misaligned or bent.

[0008] Further, the anti-overturning electrical connection through groove includes at least one anti-overturning through groove and at least one electrical connection through groove; the electrical connection through grooves are arranged in parallel, and the anti-overturning through groove is offset toward the edge of the main board with respect to the electrical connection through groove;

[0009] Anti-overturning ends and electrical connection ends are respectively arranged at the side ends of the sub-board corresponding to the anti-overturning through groove and the electrical connection through groove. The anti-overturning ends and the electrical connection ends are arranged in parallel. The anti-overturning ends are inserted into the anti-overturning through grooves, and the electrical connection ends are inserted into the electrical connection through grooves.

[0010] Further, one adjacent anti-overturning through groove and one electrical connection through groove communicate with each other.

[0011] Further, the communicating groove walls of the anti-overturning through groove and the electrical connection through groove facing the discrete component side are arc-shaped.

[0012] Further, the contact surface of the anti-overturning end and the communicating groove wall is an inclined surface or an arc-shaped surface.

[0013] Further, at least one electrical connection position is provided at the side end of the sub-board; a solder-attaching structure is provided at the bottom end of the electrical connection position, and the solder-attaching structure is used for accumulating solder.

[0014] Further, the solder-attaching structure is a notch.

[0015] Further, the solder-attaching structure is a through hole.

[0016] The technical solution provided by the present utility model may include the following beneficial effects: The front edge of the main board is provided with anti-overturning electrical connection through grooves one by one according to the number of sub-boards. After the side ends of the sub-boards are inserted into the anti-overturning electrical connection through grooves, the main board and the sub-board are perpendicular to each other. The front or back of the sub-board abuts against the discrete components of the main board. One side of the sub-board is supported by the discrete components, and the other side of the sub-board is fixed by clamping the side end of the sub-board (i.e., the bottom end of the sub-board after insertion) through the anti-overturning electrical connection through groove, so that the sub-board will not turn outwards towards the edge of the main board. Thus, the insertion position of the sub-board is relatively fixed, and machine automatic welding or manual welding can be carried out without calibrating the position of the sub-board, greatly improving the welding quality and welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a combined circuit board structure according to an embodiment of the present utility model.

[0018] Figure 2 is as Figure 1 shown in the structural diagram of the main board.

[0019] Figure 3 is asFigure 1 Schematic diagram of the structure of the auxiliary board shown

[0020] Figure 4 is as Figure 1 Schematic diagram of the insertion principle of the main board and the auxiliary board shown Figure 1 .

[0021] Figure 5 is as Figure 1 Schematic diagram of the insertion principle of the main board and the auxiliary board shown Figure 2 .

[0022] Wherein: main board 1, auxiliary board 2, anti-rollover electrical connection through slot 3, discrete component 4, anti-rollover through slot 31, electrical connection through slot 32, anti-rollover end 21, electrical connection end 22, electrical connection position 23, tin-attached structure 231, solder 232. Specific implementation manner

[0023] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features, used to distinguish and describe features, without order or importance.

[0025] In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0026] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection, or an indirect connection through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0027] The following combines with Figures 1 to 5 to describe a combined circuit board structure according to an embodiment of the present utility model.

[0028] A combined circuit board structure includes a main board 1 and at least one sub-board 2; on the front edge of the main board 1, anti-tipping electrical connection through slots 3 are provided in one-to-one correspondence with the number of sub-boards 2. The side end of the sub-board 2 is inserted into the anti-tipping electrical connection through slot 3. The front or back of the sub-board 2 abuts against the discrete components 4 of the main board 1, and the anti-tipping electrical connection through slot 3 clamps and fixes the side end of the sub-board 2.

[0029] In a preferred embodiment of a combined circuit board structure proposed by the present utility model, as Figure 1 shown, on the front edge of the main board 1, anti-tipping electrical connection through slots 3 are provided in one-to-one correspondence with the number of sub-boards 2. After the side end of the sub-board 2 is inserted into the anti-tipping electrical connection through slot 3, the main board 1 and the sub-board 2 are perpendicular to each other. The front or back of the sub-board 2 abuts against the discrete components 4 of the main board 1. One side of the sub-board 2 is supported by the discrete components 4, and the other side of the sub-board 2 is fixed by clamping and fixing the side end of the sub-board 2 (i.e., the bottom end of the sub-board 2 after insertion) through the anti-tipping electrical connection through slot 3, so that the sub-board 2 will not turn outwards towards the edge of the main board 1. Thus, the insertion position of the sub-board 2 is relatively fixed, and machine automation welding or manual welding can be carried out without calibrating the position of the sub-board 2, greatly improving the welding quality and welding efficiency.

[0030] Furthermore, the anti-tipping electrical connection through slot 3 is a special-shaped slot with one or more special-shaped parts, and the special-shaped parts are offset or bent.

[0031] In this embodiment, in order to realize the clamping and fixing effect on the side end of the sub-board 2, the anti-tipping electrical connection through slot 3 is preferably set as a special-shaped slot with one or more special-shaped parts, and the special-shaped parts are offset or bent. After the side end of the sub-board 2 is inserted into the special-shaped slot, since the side end of the sub-board 2 is on the same straight line, the offset point or bending point and the other parts of the anti-tipping electrical connection through slot 3 respectively provide supporting forces in opposite directions for the side end of the sub-board 2, thereby forming a clamping effect on the side end of the sub-board 2, and the force direction is similar to that as Figure 4 shown.

[0032] Furthermore, the anti-tipping electrical connection through slot 3 includes at least one anti-tipping through slot 31 and at least one electrical connection through slot 32; the electrical connection through slots 32 are arranged in parallel, and the anti-tipping through slot 31 is offset towards the edge of the main board 1 from the electrical connection through slots 32;

[0033] On the side ends of the auxiliary board 2, an anti-rollover end 21 and an electrical connection end 22 are respectively arranged corresponding to the anti-rollover through groove 31 and the electrical connection through groove 32. The anti-rollover end 21 and the electrical connection end 22 are arranged side by side. The anti-rollover end 21 is inserted into the anti-rollover through groove 31, and the electrical connection end 22 is inserted into the electrical connection through groove 32.

[0034] In this embodiment, the anti-rollover electrical connection through groove 3 is made into a long through groove, which reduces the supporting force of the main board 1 on the auxiliary board 2 and may cause the fixing effect of the auxiliary board 2 to be not so good. Therefore, the anti-rollover electrical connection through groove 3 is preferably composed of at least one anti-rollover through groove 31 and at least one electrical connection through groove 32, as Figures 2 to 5 shown; based on this, to achieve the clamping effect on the side end of the auxiliary board 2, the electrical connection through grooves 32 need to be arranged side by side, and the anti-rollover through grooves 31 are offset towards the edge of the main board 1 relative to the electrical connection through grooves 32. After the anti-rollover ends 21 and the electrical connection ends 22 arranged side by side are respectively inserted into the anti-rollover through grooves 31 and the electrical connection through grooves 32, the supporting force of the anti-rollover through grooves 31 on the anti-rollover ends 21 and the supporting force of the electrical connection through grooves 32 on the electrical connection ends 22 are in opposite directions, forming a clamping effect. At the same time, since the anti-rollover ends 21 and the electrical connection ends 22 are arranged side by side (i.e., on the same horizontal plane as the auxiliary board 2), after the anti-rollover through grooves 31 provide a force towards the edge of the main board 1 to the anti-rollover ends 21, the entire auxiliary board 2 will be more inclined to abut against the discrete component 4, so that the perpendicular relationship between the main board 1 and the auxiliary board 2 is more stable.

[0035] Furthermore, an adjacent anti-rollover through groove 31 and an electrical connection through groove 32 are interconnected.

[0036] In this embodiment, because the anti-rollover through grooves 31 and the electrical connection through grooves 32 are offset, it is not easy for the anti-rollover ends 21 and the electrical connection ends 22 to be inserted into the grooves. Therefore, an adjacent anti-rollover through groove 31 and an electrical connection through groove 32 are interconnected to expand the groove, facilitating the insertion of the anti-rollover ends 21 and the electrical connection ends 22 into the grooves.

[0037] Furthermore, the connecting groove walls of the anti-rollover through grooves 31 and the electrical connection through grooves 32 facing the discrete component 4 side are arc-shaped.

[0038] In this embodiment, because the anti-rollover through grooves 31 and the electrical connection through grooves 32 are offset, after the anti-rollover through grooves 31 and the electrical connection through grooves 32 are interconnected to expand the grooves, usually the electrical connection ends 22 with a larger number are inserted first, and then the anti-rollover ends 21 slide along the connecting groove walls towards the electrical connection through grooves 32; therefore, in order to prevent the anti-rollover ends 21 from getting stuck, the connecting groove walls facing the discrete component 4 side that are in contact with the anti-rollover ends 21 and receive the supporting force are set to be arc-shaped to facilitate the sliding of the anti-rollover ends 21.

[0039] Furthermore, the contact surface of the anti-rollover end 21 with the connecting groove wall is an inclined surface or an arc-shaped surface.

[0040] In this embodiment, in order to facilitate the smooth relative sliding between the anti-rollover end 21 and the communicating groove wall during the process of inserting the anti-rollover end 21 downward into the anti-rollover through groove 31, it is preferable to set the contact surface between the anti-rollover end 21 and the communicating groove wall as an inclined surface or an arc surface.

[0041] Furthermore, at least one electrical connection position 23 is provided at the side end of the auxiliary board 2; a solder accumulating structure 231 is provided at the bottom end of the electrical connection position 23, and the solder accumulating structure 231 is used for accumulating solder 232.

[0042] In this embodiment, after the relative positions of the main board 1 and the auxiliary board 2 are fixed, the auxiliary board 2 is welded to the main board 1 through the electrical connection position 23, and solder is applied from the junction of the front of the electrical connection position 23 and the main board 1 to the junction of the back of the electrical connection position 23 and the main board 1. The solder 232 needs to pass through the bottom end of the electrical connection position 23; however, the bottom end of the electrical connection position 23 is usually a flat surface, and it is relatively difficult to attach solder, which is likely to cause false soldering and affect the welding quality. Therefore, a solder accumulating structure 231 is provided at the bottom end of the electrical connection position 23 for accumulating solder 232, thickening the solder 232 attached to the bottom end of the electrical connection position 23, and improving the welding quality.

[0043] Furthermore, the solder accumulating structure 231 is a notch.

[0044] In this embodiment, in order to enable the solder accumulating structure 231 to accumulate solder 232, the solder accumulating structure 231 can be a notch (such as a semi-circular notch, a special-shaped notch, etc.). When the solder 232 passes through the notch, a tension is formed on the surface of the solder 232, so that more solder 232 stays at the notch, thickening the solder 232 attached to the bottom end of the electrical connection position 23.

[0045] Furthermore, the solder accumulating structure 231 is a through hole.

[0046] In this embodiment, in order to enable the solder accumulating structure 231 to accumulate solder 232, the solder accumulating structure 231 can also be a through hole (such as a round hole, a square hole, a special-shaped hole, etc.). When the solder 232 passes through the through hole, the tension formed on the surface of the solder 232 is stronger, so that more solder 232 stays at the through hole. Even the solder 232 can fill the through hole and pass through, greatly thickening the solder 232 attached to the bottom end of the electrical connection position 23, and the welding effect is better.

[0047] Other components and operations of a combined circuit board structure according to an embodiment of the present invention are known to those of ordinary skill in the art, and will not be described in detail here.

[0048] In the description of this specification, the descriptions referring to terms such as "embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0049] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A modular circuit board structure, characterized in that: It includes a main board and at least one sub-board; the front edge of the main board is provided with anti-rollover electrical connection grooves in a one-to-one correspondence according to the number of the sub-boards, the side ends of the sub-boards are inserted into the anti-rollover electrical connection grooves, the front or back side of the sub-boards are against the discrete components of the main board, and the anti-rollover electrical connection grooves clamp and fix the side ends of the sub-boards.

2. A modular circuit board structure according to claim 1, characterized in that: The anti-rollover electrical connection through groove is a special-shaped groove with one or more special-shaped parts, and the special-shaped part is misaligned or bent.

3. The combined circuit board structure according to claim 1, characterized in that: The anti-rollover electrical connection slot includes at least one anti-rollover slot and at least one electrical connection slot; the electrical connection slots are arranged in parallel, and the anti-rollover slot is offset from the electrical connection slot toward the edge of the mainboard; The side ends of the sub-plate are respectively provided with an anti-rollover end and an electrical connection end corresponding to the anti-rollover through groove and the electrical connection through groove, the anti-rollover end and the electrical connection end are arranged in parallel, the anti-rollover end is inserted into the anti-rollover through groove, and the electrical connection end is inserted into the electrical connection through groove.

4. A modular circuit board structure according to claim 3, characterized in that: An adjacent anti-rollover through groove and an adjacent electrical connection through groove are communicated with each other.

5. A modular circuit board structure according to claim 4, characterized in that: The connecting groove walls of the anti-rollover through groove and the electrical connection through groove facing the discrete component side are arc-shaped.

6. A modular circuit board structure according to claim 5, characterized in that: The contact surface between the anti-rollover end and the connecting groove wall is an inclined surface or an arc-shaped surface.

7. The modular circuit board structure according to claim 1, characterized in that: At least one electrical connection position is arranged at the side end of the sub-plate; a tin-attaching structure is arranged at the bottom end of the electrical connection position, and the tin-attaching structure is used for accumulating solder.

8. The combined circuit board structure according to claim 7, characterized in that: The tin-attaching structure is a notch.

9. The combined circuit board structure according to claim 7, characterized in that: The tin-attaching structure is a through hole.

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