Positioning tool for assembling board cards

Abstract

The utility model provides a positioning tool for assembling board cards, which comprises a first tool, a second tool and balls installed in the first tool and the second tool, the first tool and the board cards are sleeved in the second tool, the balls are used for roughly limiting the first tool and the board cards, the first tool is provided with a positioning structure, and the first tool is provided with a positioning structure. The first tool is of a rectangular frame structure, and positioning pins are installed at the four corners of the first tool and used for being connected to through holes of a board card and precisely limiting the board card. The positioning structure is used for precisely limiting the connector, and the connector is fixedly connected to the PCB. According to the positioning tool for assembling the board cards, coarse positioning can be achieved through the second tool, the assembling efficiency is improved, fine positioning can be achieved through the first tool, the positioning precision is guaranteed, connectors are limited through the tool, it is guaranteed that the board cards can be assembled perfectly, rework is reduced, and meanwhile cost is saved.

Description

Technical Field

[0001] This utility model belongs to the field of error-proof tooling, and in particular relates to a positioning tooling for assembly between circuit boards. Background Technology

[0002] Satellite products often employ a layered, stacked assembly of electronic devices. Multiple layers of circuit boards are assembled together to form a complete single device, which is then mounted on the satellite. When satellite manufacturers procure this single device, each layer of circuit boards is supplied by different manufacturers due to varying functionalities. The circuit boards within multi-layered electronic devices typically achieve inter-layer mating connections by soldering connectors onto the boards. If the PCB boards within an electronic device are misaligned, it can lead to inaccurate connector mating, affecting electrical performance and mechanical stability. In some cases, connectors between the PCB boards of two electronic devices may even fail to mate. Therefore, the assembly of each layer of circuit boards must ensure both proper structural fit and reliable inter-board connector mating. Utility Model Content

[0003] In view of this, the present invention aims to provide a positioning fixture for assembly between circuit boards, so as to solve the problem that the connectors between the PCB boards of two electronic devices cannot be interlocked.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A positioning fixture for assembling circuit boards includes a first fixture, a second fixture, and ball bearings installed inside them. The second fixture is used to fit the first fixture and the circuit board. The ball bearings are used to coarsely limit the positioning of the first fixture and the circuit board. The first fixture has a positioning structure. The first fixture has a rectangular frame structure and positioning pins are installed at its four corners. The positioning pins are used to connect to the through holes of the circuit board and precisely limit the positioning of the circuit board. The positioning structure is used to precisely limit the positioning of the connector, which is fixedly connected to the PCB circuit board.

[0006] Furthermore, one side of the connector is a hole, and the other side is a pin.

[0007] Furthermore, the positioning structure is a hole corresponding to a pin on the connector, or a pin corresponding to a hole on the connector.

[0008] Furthermore, the first tooling has a rectangular frame structure, and the outer frame size is the same as the size of the circuit board. The inner frame size of the second tooling is the same as the size of the circuit board.

[0009] Furthermore, the first fixture is an integral structure with flat surfaces on both sides. Symmetrical positioning structures are provided on the flat surfaces, and a groove is provided on the side of the first fixture away from the PCB circuit board.

[0010] Furthermore, the second tooling has a rectangular frame structure, and both the top and bottom ends of the second tooling are chamfered.

[0011] Furthermore, the second tooling has several mounting holes inside, which are used to install ball bearings, and the ball bearings form a ball bearing track.

[0012] Furthermore, connectors are soldered onto the PCB circuit board, with adjacent connectors interlocking for signal transmission.

[0013] Furthermore, the board is rectangular, and through holes for mounting bolts are provided at its four corners.

[0014] Compared with the prior art, the positioning fixture for inter-board assembly described in this utility model has the following advantages:

[0015] (1) The positioning fixture for assembling between boards described in this utility model can achieve coarse positioning by the second fixture, which improves assembly efficiency, and can achieve fine positioning by the first fixture, which ensures positioning accuracy. By limiting the connector through the fixture, it can ensure that the boards can be perfectly assembled, reducing rework and saving costs.

[0016] (2) The positioning fixture for assembling between boards described in this utility model can realize the positioning of PCB circuit boards and boards, and ensure the installation accuracy of PCB circuit boards, so that the two boards can be smoothly inserted when assembled.

[0017] (3) The positioning fixture for assembling between boards described in this utility model is designed with fixture No. 1 and fixture No. 2 separately, which is not only easy to disassemble and assemble, but also fixture No. 2 can be matched with fixture No. 1 which has different internal structure and the same outer frame size, thus having good versatility. Attached Figure Description

[0018] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0019] Figure 1 This is an exploded view of the positioning fixture for inter-board assembly described in an embodiment of the present invention;

[0020] Figure 2 This is a breakdown diagram of the positioning tooling used in the embodiments of this utility model.

[0021] Figure 3 This is a diagram showing the board card before it is installed onto the positioning fixture, as described in this embodiment of the utility model.

[0022] Figure 4This is a diagram showing the board card installed in the positioning fixture according to an embodiment of the present invention;

[0023] Figure 5 This is a cross-sectional view of the board card after it has been installed into the positioning fixture according to an embodiment of this utility model;

[0024] Figure 6 This is a schematic diagram of the stacked assembly of the board device according to an embodiment of the present utility model;

[0025] Figure 7 This is a cross-sectional view of the stacked assembly of the board device according to an embodiment of the present utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1- Tooling No. 1; 11- Positioning structure; 2- Tooling No. 2; 3- PCB circuit board; 4- Board; 5- Connector; 6- Ball bearing; 7- Positioning pin. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] A positioning fixture for assembling circuit boards, such as Figures 1 to 7 As shown, the fixture includes a first fixture 1, a second fixture 2, and ball bearings 6 installed inside them. The second fixture 2 is used to fit the first fixture 1 and the circuit board 4. The ball bearings 6 are used for coarse positioning of the first fixture 1 and the circuit board 4. The first fixture 1 is provided with a positioning structure 11. The first fixture 1 is a rectangular frame structure with positioning pins 7 installed at its four corners. The positioning pins 7 are used to connect to the through holes of the circuit board 4 and to precisely position the circuit board 4. The positioning structure 11 is used to precisely position the connector 5. The connector 5 is fixedly connected to the PCB circuit board 3. The positioning fixtures for assembling circuit boards described in this utility model, the second fixture can achieve coarse positioning and improve assembly efficiency, while the first fixture can achieve fine positioning and ensure positioning accuracy. By limiting the connector through the fixtures, it is ensured that the circuit boards can be perfectly assembled, reducing rework and saving costs.

[0033] One side of connector 5 has a hole, and the other side has a pin, which facilitates the limiting insertion of two adjacent connectors 5 and also facilitates the limiting connection between the connector and the positioning structure. The positioning structure 11 can have holes corresponding to the pins on connector 5, or it can have pins corresponding to the holes on connector 5, so as to achieve the positioning of PCB circuit board 3.

[0034] To improve work efficiency and achieve precise positioning, fixture 1 has a rectangular frame structure with the same outer frame size as board 4. Fixture 2 has the same inner frame size as board 4. Fixture 1 is a one-piece structure with flat surfaces on both sides. Symmetrical positioning structures 11 are located on these flat surfaces. A groove is located on the side of fixture 1 away from the PCB board 3. When connector 5 is inserted into the positioning structure, it enters the groove, effectively protecting connector 5 and preventing damage.

[0035] Fixture 2 is a rectangular frame structure with chamfered edges at both ends to guide fixture 1 and board 4, facilitating assembly. The interior of fixture 2 has several mounting holes for installing ball bearings 6, forming a ball bearing track. This track provides coarse positioning for fixture 1 and board 4, reducing assembly resistance and improving efficiency while protecting the structural appearance. Connectors 5 are soldered onto the PCB circuit board 3, with adjacent connectors 5 interlocking for signal transmission. Board 4 is rectangular, with through holes at its four corners for mounting bolts, facilitating the stacking of multiple boards.

[0036] The working principle of a positioning fixture used for assembling circuit boards is as follows:

[0037] Internal assembly:

[0038] First, solder connector 5 onto PCB circuit board 3 and then place it inside board 4. Next, install positioning pins 7 on the four corners of fixture 1. Finally, fit board 4 and fixture 1 into fixture 2. The ball bearings 6 inside fixture 2 provide coarse positioning for fixture 1 and board 4. The through hole of board 4 is connected to fixture 1 via positioning pins 7. Connector 5 is connected to the positioning structure. At this time, positioning pins 7 provide precise positioning for fixture 1 and board 4, and the positioning structure provides precise positioning for connector 5. The positions of PCB circuit board 3 and board 4 are accurately installed. Remove fixture 2 and remove board 4 with PCB circuit board 3. At this time, this layer of boards is assembled into a board device layer. This positioning fixture ensures both processing accuracy and accurate connector positioning, while also ensuring that each board device layer can be accurately assembled with each other.

[0039] Board / device stack-up assembly: For ease of understanding, we will use a 3-board / device layer as an example:

[0040] Place the first board device layer A horizontally, and then place the second board device layer B horizontally on top of the first board device layer A. During placement, ensure that the connectors of the first board device layer A and the second board device layer B are plugged in. Similarly, place the third board device layer C. After placement, use bolts to secure the boards to each other through the through holes on the first board device layer A, the second board device layer B, and the three boards device layers C. The positioning fixture for assembling boards described in this invention features a separate design for fixtures one and two, which facilitates assembly and disassembly. Furthermore, fixture two can be matched with fixture one, which has a different internal structure but the same outer frame size, offering good versatility.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning fixture for assembling circuit boards, characterized in that: It includes fixture No. 1, fixture No. 2, and the ball bearings installed inside them. Fixture No. 2 is used to fit fixture No. 1 and the circuit board. The ball bearings are used for coarse positioning of fixture No. 1 and the circuit board. Fixture No. 1 is equipped with a positioning structure. Fixture No. 1 has a rectangular frame structure and positioning pins are installed at the four corners. The positioning pins are used to connect to the through holes of the circuit board and to precisely position the circuit board. The positioning structure is used to precisely position the connector, which is fixedly connected to the PCB circuit board.

2. The positioning fixture for inter-board assembly according to claim 1, characterized in that: One side of the connector has a hole, and the other side has a pin.

3. A positioning fixture for assembling circuit boards according to claim 2, characterized in that: The positioning structure is a hole corresponding to a pin on the connector, or a pin corresponding to a hole on the connector.

4. A positioning fixture for assembling circuit boards according to claim 1, characterized in that: The first fixture has a rectangular frame structure, and the outer frame size is the same as the size of the circuit board. The inner frame size of the second fixture is the same as the size of the circuit board.

5. A positioning fixture for assembling circuit boards according to claim 1, characterized in that: The No. 1 fixture is an integral structure with flat surfaces on both sides. The flat surfaces have symmetrical positioning structures. The side of the No. 1 fixture away from the PCB circuit board has a groove.

6. A positioning fixture for assembling circuit boards according to claim 1, characterized in that: Fixture No. 2 has a rectangular frame structure, and both the top and bottom ends of fixture No. 2 are chamfered.

7. A positioning fixture for assembling circuit boards according to claim 1, characterized in that: The interior of tooling number two has several mounting holes for installing ball bearings, and the ball bearings form a ball bearing track.

8. A positioning fixture for assembling circuit boards according to claim 1, characterized in that: Connectors are soldered onto the PCB circuit board, and adjacent connectors are plugged into each other to transmit signals.

9. A positioning fixture for assembling circuit boards according to claim 1, characterized in that: The board is rectangular, and there are through holes at the four corners for mounting bolts.

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