Circuit board structure and weighing instrument

Abstract

This utility model discloses a circuit board structure and a weighing instrument, including a first mounting plate, a second mounting plate, a bracket, and a connector. The first and second mounting plates are arranged opposite each other, both serving to support the circuit board. The bracket and the connector are mounted on the first mounting plate, and the connector can be controllably connected to or disconnected from the second mounting plate. The second mounting plate has a connecting portion, which is pivotally connected to the bracket via a pivot shaft. The bracket has a limiting portion on its side. When the second mounting plate is disconnected from the connector and pivots to its extreme position, the side of the connecting portion away from the second mounting plate abuts against the limiting portion. This utility model, through the connection between the second mounting plate and the connector, can fix the second mounting plate or expose the first mounting plate, facilitating the expansion, replacement, or repair of the circuit board. Furthermore, the limiting portion on the side of the bracket can restrict the pivoting range of the second mounting plate.

Description

Technical Field

[0001] This utility model belongs to the field of weighing technology, specifically relating to a circuit board structure and a weighing instrument. Background Technology

[0002] With the rapid development of technology, industrial weighing instruments have increasingly higher requirements for data calculation and image processing. In order to meet these diverse needs, more circuit boards need to be installed in the limited internal space of the weighing instrument.

[0003] For existing weighing instruments, the internal circuit boards are mostly simply stacked and fixed. There are spatial constraints between the circuit boards, and disassembly and assembly need to follow a strict disassembly and assembly sequence, which increases the difficulty of disassembling and assembling the circuit boards.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a circuit board structure that solves the problem of difficult disassembly and assembly of existing circuit board structures.

[0006] To achieve the above objectives, a specific embodiment of this utility model provides a circuit board structure, including a first mounting plate, a second mounting plate, a bracket, and a connector. The first and second mounting plates are disposed opposite to each other, both serving to support the circuit board. The bracket is mounted on the first mounting plate, and the connector is also mounted on the first mounting plate. The connector can be controllably connected to or disconnected from the second mounting plate. The second mounting plate has a connecting portion, which is pivotally connected to the bracket via a pivot shaft. The bracket has a limiting portion on its side. When the second mounting plate is disconnected from the connector and pivoted to its extreme position, the side of the connecting portion away from the second mounting plate abuts against the limiting portion.

[0007] In one or more embodiments of this utility model, the limiting part is perpendicular to the bracket.

[0008] In one or more embodiments of the present invention, the connecting portion includes a first segment connected to a pivot shaft and a second segment disposed on the side of the first segment away from the second mounting plate, wherein the width of the first segment is greater than the width of the second segment.

[0009] In one or more embodiments of this utility model, the connecting portion is formed by bending from the side of the second mounting plate near the bracket and extends toward the bracket.

[0010] In one or more embodiments of this utility model, when the second mounting plate and the connector are connected to each other, the connector can restrict the second mounting plate from pivoting about the pivot axis.

[0011] In one or more embodiments of this utility model, when the second mounting plate and the connector are connected to each other, the connector abuts against the side of the second mounting plate facing the first mounting plate.

[0012] In one or more embodiments of this utility model, when the second mounting plate and the connector are connected to each other, the second mounting plate and the connector are connected by bolts.

[0013] In one or more embodiments of this utility model, when the second mounting plate is disconnected from the connector, the second mounting plate can pivot at an angle greater than or equal to 90°.

[0014] In one or more embodiments of this utility model, the first mounting plate or the second mounting plate is a heat spreader.

[0015] In another aspect, this utility model also provides a weighing instrument, which includes the aforementioned circuit board structure, a display screen, a first housing, and a second housing. The first housing is located on the backlight side of the display screen, a first mounting plate is located on the side of the first housing facing away from the display screen, and the second housing is mounted on the first housing.

[0016] Compared with the prior art, when the second mounting plate and the connector of this utility model are connected to each other, the position of the second mounting plate and the circuit board it carries can be fixed. When the second mounting plate is disconnected from the connector, the second mounting plate can pivot and move away from the first mounting plate, exposing the first mounting plate and the circuit board it carries, so as to facilitate its expansion, replacement or repair. Furthermore, during the pivoting process of the second mounting plate, the limiting part on the side of the bracket can limit the pivoting range of the second mounting plate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural view of the second mounting plate of the circuit board structure in the locked state according to an embodiment of the present invention;

[0019] Figure 2 This is an exploded view of the circuit board structure in one embodiment of the present invention;

[0020] Figure 3 This is a perspective view of the second mounting plate of the circuit board structure in the unlocked state in one embodiment of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the limiting structure in one embodiment of the present invention.

[0022] Explanation of main reference numerals in the attached drawings: 1. First mounting plate; 2. Second mounting plate; 21. Connecting part; 211. First segment; 212. Second segment; 22. Perforation; 3. First circuit board; 4. Second circuit board; 5. Pivot shaft; 6. Bracket; 61. Limiting part; 7. Connecting piece; 8. Bolt; 9. Display screen; 10. First housing; 11. Second housing. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "top", "bottom", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "second" and "first" 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. Therefore, features defined as "second" or "first" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In one embodiment, reference is made to Figures 1 to 3 As shown, this utility model provides a circuit board structure, which includes a first mounting plate 1, a second mounting plate 2, a plurality of circuit boards, a bracket 6, and a connector 7.

[0027] Specifically, the first mounting plate 1 and the second mounting plate 2 are arranged opposite to each other and are roughly parallel, with a certain gap between them. Both the first mounting plate 1 and the second mounting plate 2 are used to support the circuit board. The circuit board includes a first circuit board 3 and a second circuit board 4. The first circuit board 3 is disposed on the first mounting plate 1, preferably on the side of the first mounting plate 1 facing the second mounting plate 2. The second circuit board 4 is disposed on the second mounting plate 2, preferably on the side of the second mounting plate 2 facing away from the first mounting plate 1. One side of the bracket 6 is fixedly connected to the first mounting plate 1, and the other side is pivotally connected to the second mounting plate 2 via a pivot shaft 5. The connector 7 is disposed on the first mounting plate 1, and the connector 7 and the bracket 6 are arranged at intervals in a direction roughly perpendicular to the pivot shaft 5. The connector 7 can be controllably connected to or disconnected from the second mounting plate 2.

[0028] When the second mounting plate 2 is in the locked state, the connector 7 is at least partially located between the first circuit board 3 and the second circuit board 4, and is also connected to the second mounting plate 2. At this time, the connector 7 can lock the position of the second mounting plate 2 on the one hand, and provide a supporting force to the second mounting plate 2 on the other hand, restricting the second mounting plate 2 from pivoting around the pivot axis 5.

[0029] When the second mounting plate 2 is disconnected from the connector 7, the second mounting plate 2 switches from the locked state to the unlocked state. At this time, the second mounting plate 2 can pivot controllably around the pivot axis 5.

[0030] According to the above structural design, the second circuit board 4 on the second mounting plate 2 is located on the side away from the first mounting plate 1 and is not blocked by the first mounting plate 1. When it is necessary to repair or replace the second circuit board 4, it can be repaired or replaced directly.

[0031] When the first circuit board 3 needs to be repaired or replaced, the second mounting plate 2 pivots around the pivot axis 5 to move away from the first mounting plate 1, thereby disconnecting the second mounting plate 2 from the connector 7 and exposing the first circuit board 3 on the first mounting plate 1, so as to facilitate the repair or replacement of the first circuit board 3 on the first mounting plate 1.

[0032] In one embodiment, reference is made to Figure 2 and Figure 3 As shown, the connector 7 is configured as a columnar structure. The connector 7 is located on the side of the first mounting plate 1 facing the second mounting plate 2 and extends toward the direction close to the second mounting plate 2.

[0033] When the second mounting plate 2 is in the locked state, the second mounting plate 2 abuts against the side of the connector 7 facing away from the first mounting plate 1, providing support for the second mounting plate 2 and restricting the second mounting plate 2 from pivoting towards the first mounting plate 1.

[0034] In one embodiment, to ensure that the second mounting plate 2 and the connector 7 can be quickly separated, and to ensure that the second mounting plate 2 and the connector 7 have sufficient connection strength, the second mounting plate 2 and the connector 7 can be connected by bolts 8.

[0035] Specifically, a through hole 22 that mates with a threaded hole is opened at the corresponding position of the second mounting plate 2, and a threaded hole is opened at the end of the connector 7 facing away from the first mounting plate 1. When the second mounting plate 2 abuts against the connector 7, the through hole 22 on the second mounting plate 2 is aligned with the threaded hole on the connector 7, and the bolt 8 is inserted into the through hole 22 from one side of the second mounting plate 2. Then the bolt 8 is tightened to form a threaded engagement with the threaded hole to lock the position of the second mounting plate 2.

[0036] In other embodiments, the second mounting plate 2 and the connector 7 may also be connected by a method other than bolt 8, such as snap-fit ​​connection, interference fit, pin connection or magnetic connection.

[0037] In one embodiment, reference is made to Figure 3 and Figure 4 As shown, the circuit board structure also includes a limiting mechanism, which is used to limit the pivot angle of the second mounting plate 2 in the unlocked state, and to provide a force to the second mounting plate 2 when the second mounting plate 2 pivots to the limit position, thereby limiting the second mounting plate 2 from continuing to pivot.

[0038] Specifically, the limiting mechanism includes a connecting part 21 and a limiting part 61. The connecting part 21 is located on the side of the second mounting plate 2 near the bracket 6. The connecting part 21 is formed by bending from the side of the second mounting plate 2 near the bracket 6. The limiting part 61 extends from the side of the bracket 6 in a direction parallel to the pivot axis 5. A limiting surface facing away from the connecting member 7 is formed on the limiting part 61. The limiting surface is approximately perpendicular to the first mounting plate 1 and parallel to the pivot axis 5.

[0039] When the second mounting plate 2 is in the locked state, the connecting part 21 is approximately parallel to the second mounting plate 2, and the side of the connecting part 21 away from the second mounting plate 2 is spaced from the limiting surface, so the two do not interfere with each other.

[0040] When the second mounting plate 2 is in the unlocked state and pivoted to its limit position, the side of the connecting part 21 away from the second mounting plate 2 abuts against the limiting surface of the limiting part 61, thereby interfering with the limiting part 61, limiting the pivoting angle of the second mounting plate 2, and providing a force to the second mounting plate 2 to counteract the gravity of the second mounting plate 2, so that the second mounting plate 2 is kept in its limit position.

[0041] Furthermore, when the second mounting plate 2 is in the unlocked state, the second mounting plate 2 can pivot at an angle greater than or equal to 90°.

[0042] Preferably, the second mounting plate 2 can pivot at an angle of approximately 120°.

[0043] In one embodiment, reference is made to Figure 4 As shown, the connecting portion 21 includes a first segment 211 and a second segment 212. The first segment 211 is connected to the pivot shaft, and the second segment 212 extends from the side of the first segment 211 away from the second mounting plate 2 in a direction away from the second mounting plate 2. The width of the first segment 211 is greater than the width of the second segment 212, so that the first segment 211 still has sufficient structural strength after being connected to the connecting portion 21. The width direction is perpendicular to the arrangement direction of the first segment 211 and the second segment 212.

[0044] In one embodiment, multiple brackets 6 and connectors 7 can be provided to improve the support strength of the second circuit board 4.

[0045] Preferably, there are two brackets 6 and two connectors 7. The two brackets 6 and the two connectors 7 are arranged in a roughly rectangular shape, with the two connectors 7 arranged on both sides of the second mounting plate 2 along the axial direction of the pivot shaft 5.

[0046] In one embodiment, both the bracket 6 and the connector 7 extend generally along a direction perpendicular to the first mounting plate 1 and the second mounting plate 2, and the bracket 6 and the connector 7 are configured as elongated structures.

[0047] In other embodiments, the bracket 6 and the connector 7 may also be configured with other shapes, such as trapezoids, as long as the bracket 6 and the connector 7 can support and limit the second mounting plate 2.

[0048] In one embodiment, the first mounting plate 1 or the second mounting plate 2 can be selectively configured as a heat spreader according to the amount of heat generated by the first circuit board 3 and the second circuit board 4, so as to improve the heat dissipation efficiency of the first circuit board 3 or the second circuit board 4.

[0049] An embodiment of this utility model also provides a weighing instrument, which includes the circuit board structure, display screen 9, first housing 10, and second housing 11 described in the above embodiment. The first housing 10 is configured as an annular hollow structure and is installed on the backlight side of the display screen 9 (i.e., the side facing away from the light-emitting side of the display screen 9). The first mounting plate 1 of the circuit board structure is disposed on the side of the first housing 10 facing away from the display screen 9, and the second housing 11 covers the first housing 10 to enclose the circuit board structure and prevent it from being exposed to the external environment.

[0050] Furthermore, the first mounting plate 1 and the second mounting plate 2 are approximately parallel to the display screen 9. The first circuit board 3 on the first mounting plate 1 can serve as the motherboard, and the second circuit board 4 on the second mounting plate 2 can serve as an optional board to extend specific functions that the motherboard does not have.

[0051] Furthermore, the bracket 6 and connector 7 are approximately perpendicular to the plane where the display screen 9 is located. After disassembling the second housing 11, the display screen 9 is placed flat on the table, with the second mounting plate 2 approximately parallel to the horizontal plane, facilitating the operator to replace, install, or repair the second circuit board 4 on the second mounting plate 2. In addition, the flattened position of the second mounting plate 2 also facilitates the removal of the bolts 8 on the second mounting plate 2, thereby facilitating the replacement, installation, or repair of the first circuit board 3 on the first mounting plate 1.

[0052] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A circuit board structure, characterized in that, include: The first mounting plate (1) and the second mounting plate (2) are arranged opposite to each other, and both the first mounting plate (1) and the second mounting plate (2) are used to carry the circuit board; The bracket (6) is mounted on the first mounting plate (1); A connector (7) is disposed on the first mounting plate (1), and the connector (7) can be controllably connected to or disconnected from the second mounting plate (2); The second mounting plate (2) is provided with a connecting part (21), which is pivotally connected to the bracket (6) via a pivot shaft (5). The bracket (6) is provided with a limiting part (61) on its side. When the second mounting plate (2) is disconnected from the connecting piece (7) and pivoted to the limit position, the side of the connecting part (21) away from the second mounting plate (2) abuts against the limiting part (61).

2. The circuit board structure according to claim 1, characterized in that, The limiting part (61) is perpendicular to the bracket (6).

3. The circuit board structure according to claim 1, characterized in that, The connecting part (21) includes a first segment (211) connected to the pivot shaft (5) and a second segment (212) located on the side of the first segment (211) away from the second mounting plate (2), wherein the width of the first segment (211) is greater than the width of the second segment (212).

4. The circuit board structure according to claim 2, characterized in that, The connecting portion (21) is formed by bending from the side of the second mounting plate (2) near the bracket (6) and extends toward the bracket (6).

5. The circuit board structure according to claim 1, characterized in that, When the second mounting plate (2) is connected to the connector (7), the connector (7) can restrict the second mounting plate (2) from pivoting about the pivot axis (5).

6. The circuit board structure according to claim 5, characterized in that, When the second mounting plate (2) is connected to the connector (7), the connector (7) abuts against the side of the second mounting plate (2) facing the first mounting plate (1).

7. The circuit board structure according to claim 6, characterized in that, When the second mounting plate (2) is connected to the connector (7), the second mounting plate (2) and the connector (7) are connected by bolts (8).

8. The circuit board structure according to claim 1, characterized in that, When the second mounting plate (2) is disconnected from the connector (7), the second mounting plate (2) can pivot at an angle greater than or equal to 90°.

9. The circuit board structure according to claim 1, characterized in that, The first mounting plate (1) or the second mounting plate (2) is a heat spreader.

10. A weighing instrument, characterized in that, The weighing instrument includes: Display screen (9); The first housing (10) is disposed on the backlight side of the display screen (9); The circuit board structure as described in any one of claims 1 to 9, wherein the first mounting plate (1) is disposed on the side of the first housing (10) facing away from the display screen (9); The second housing (11) is placed over the first housing (10).

Images