A damping mechanism applied to printed board installation

Abstract

The utility model discloses a kind of damping mechanisms applied to printed board installation, it is related to printed board installation damping technical field, including shell, the inside of the shell is respectively placed with upper printed board, lower printed board from top to bottom in parallel, one end of the shell is set to open, the end of the shell away from the opening is fixedly connected with closure plate, the side of the upper printed board close to the opening of the shell is connected with first damping member, the side of the lower printed board close to the opening of the shell is connected with second damping member, the first damping member and the second damping member are set apart, the upper printed board and the lower printed board are respectively connected with third damping member and are set in the both ends close to the closure plate, one end of the third damping member is connected with the upper printed board by thread fastening, the other end of the third damping member is connected with the lower printed board by thread fastening, and the device effectively reduces the vibration transmission between sensor shell and printed board.

Description

Technical Field

[0001] This utility model relates to the field of vibration reduction technology for printed circuit board mounting, specifically a vibration reduction mechanism applied to printed circuit board mounting. Background Technology

[0002] Printed circuit boards (PCBs) are crucial components in the electronics industry, widely used across various sectors. Electronic components on PCBs are often subject to mechanical vibration, leading to friction and impacts that can damage electrical connectors, cause unstable electrical transmission, breakage of pins, and reduced lifespan. Furthermore, with the rapid development of modern industry, vibration and noise pollution have become increasingly severe, not only deteriorating the surrounding environment and harming health, but also affecting the quality, accuracy, and lifespan of various instruments, meters, and mechanical equipment. Currently, vibration and noise are considered key indicators of product quality. Therefore, reducing vibration between the PCB and its housing has become a pressing issue for researchers in this field. Utility Model Content

[0003] The purpose of this invention is to provide a vibration damping mechanism for printed circuit board mounting, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a vibration damping mechanism for printed circuit board mounting, comprising a housing, wherein an upper printed circuit board and a lower printed circuit board are placed parallel to each other from top to bottom inside the housing, one end of the housing is open, and a closing plate is fixedly connected to the end of the housing away from the opening, a first vibration damping member is connected to the side of the upper printed circuit board near the opening of the housing, and a second vibration damping member is connected to the side of the lower printed circuit board near the opening of the housing, the first vibration damping member and the second vibration damping member are separately provided, and a third vibration damping member is connected to each end of the upper printed circuit board and the lower printed circuit board near the closing plate, one end of the third vibration damping member is fastened to the upper printed circuit board by a thread, and the other end of the third vibration damping member is fastened to the lower printed circuit board by a thread.

[0005] The present invention further describes that four first lifting lugs are provided around the inner wall of the shell near the opening. The four first lifting lugs are divided into two upper ones and two lower ones. The four first lifting lugs are evenly and fixedly distributed on the inner wall of the shell near the opening with the central axis of the shell as the center. The first damping member is connected to the two upper first lifting lugs respectively.

[0006] The present invention further explains that the first damping member includes a first longitudinal part, a first curved part and a first transverse part integrally connected together. The surface of the first longitudinal part near the adjacent first lifting lug is provided with a first longitudinal connecting hole, and the first longitudinal connecting hole is fastened to the adjacent first lifting lug by bolts. The surface of the first transverse part near the adjacent first lifting lug is provided with a first transverse connecting hole, and the first transverse connecting hole is fixedly connected to the lower surface of the adjacent upper printed circuit board by bolts.

[0007] The present invention further explains that the second damping member includes a second longitudinal part, a second curved part and a second transverse part integrally connected. The second longitudinal part has a second longitudinal connecting hole on the surface of the first lifting lug near its neighbor, and the second longitudinal connecting hole is fastened to the first lifting lug near its neighbor by bolts. The second transverse part has a second transverse connecting hole on the surface of the first lifting lug facing its neighbor, and the second transverse connecting hole is fixedly connected to the upper surface of the lower printed circuit board near its neighbor by bolts.

[0008] The present invention further describes that two second lifting lugs are provided on the inner wall of the housing near the sealing plate. The two second lifting lugs are arranged opposite each other and located at the height of the central axis of the housing. The third vibration damping member is threadedly connected to its adjacent second lifting lug.

[0009] The present invention further describes that the third damping member includes a third transverse portion, a third longitudinal portion, a fourth longitudinal portion, and a fourth transverse portion integrally connected. The third transverse portion and the fourth transverse portion are arranged parallel to each other and are fixedly connected on the same side by the third longitudinal portion. The surface of the third transverse portion is provided with at least one third transverse connecting hole, wherein the third transverse connecting hole located away from the sealing plate is fixedly connected to the upper printed circuit board by bolts. The fourth longitudinal portion is arranged perpendicular to the third longitudinal portion. The surface of the fourth longitudinal portion near the adjacent second lifting lug is provided with a fourth longitudinal connecting hole, and the fourth longitudinal connecting hole is threadedly connected to the adjacent second lifting lug. The surface of the fourth transverse portion is provided with a fourth transverse connecting hole, and the fourth transverse connecting hole is fixedly connected to the lower printed circuit board by bolts.

[0010] This utility model further explains that the upper printed circuit board is shorter than the lower printed circuit board in length and both have the same width, and the upper printed circuit board is located above the lower printed circuit board and is centrally positioned.

[0011] This utility model further illustrates that the first transverse connecting hole and the second transverse connecting hole are staggered.

[0012] This utility model further illustrates that the third lateral connecting hole, which is located away from the sealing plate, is staggered from the fourth lateral connecting hole.

[0013] This utility model further illustrates that the first damping component, the second damping component, and the third damping component are all made of DMnCuNiFe vibration damping alloy.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model adopts a split design for the first vibration damping component, the second vibration damping component, and an integrated design for the third vibration damping component. This not only has a simple structure, is easy to process in batches and effectively reduces space occupancy, but also achieves longitudinal and lateral limited vibration damping, avoiding interference problems between components on the printed circuit board, thereby improving the service life of the printed circuit board. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a utility model Figure 1 A schematic diagram of the left-side view structure; Figure 3 This is a half-sectional structural diagram of the shell of this utility model; Figure 4 This is a schematic diagram of the internal structure of this utility model after the shell has been removed; Figure 5 This is a schematic diagram of the structural connection between the upper and lower printed circuit boards of this utility model; Figure 6 This is a schematic diagram of the structure of the first and second vibration damping components of this utility model; Figure 7 This is a structural schematic diagram of the third vibration damping component of this utility model; Figure 8 This is a utility model Figure 1 A schematic diagram of the overall cross-sectional structure; In the diagram: 1. Housing; 2. Upper printed circuit board; 3. Lower printed circuit board; 4. First lifting lug; 5. First damping component; 51. First longitudinal section; 52. First curved section; 53. First transverse section; 54. First longitudinal connecting hole; 55. First transverse connecting hole; 6. Second lifting lug; 7. Second damping component; 71. Second longitudinal section; 72. Second curved section; 73. Second transverse section; 74. Second longitudinal connecting hole; 75. Second transverse connecting hole; 8. Third damping component; 81. Third transverse section; 82. Third transverse connecting hole; 83. Third longitudinal section; 84. Fourth longitudinal section; 85. Fourth longitudinal connecting hole; 86. Fourth transverse connecting hole; 87. Fourth transverse section; 9. Sealing plate. Detailed Implementation

[0016] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] Please see Figures 1-8 The present invention provides a technical solution: a vibration damping mechanism for printing board installation, comprising a housing 1, the interior of which is hollow for supporting and placing the printing board; an upper printing board 2 and a lower printing board 3 are placed parallel to each other from top to bottom inside the housing 1 for realizing the printing board installation process. See Figures 1-3 One end of the housing 1 is open, and a closed plate 9 is fixedly connected to the end of the housing 1 away from the opening. A through hole is opened in the middle of the closed plate 9. Four first lifting lugs 4 are provided around the inner wall of the housing 1 near the opening. The four first lifting lugs 4 are divided into two upper and two lower ones. The four first lifting lugs 4 are evenly and fixedly distributed on the inner wall of the housing 1 near the opening with the central axis of the housing 1 as the center. Two second lifting lugs 6 are provided on the inner wall of the housing 1 near the closed plate 9. The two second lifting lugs 6 are arranged opposite each other and located at the height of the central axis of the housing 1. The first lifting lugs 4 and the second lifting lugs 6 are used to support and connect the upper printed circuit board 2 and the lower printed circuit board 3.

[0018] See Figure 4 On the side of the upper printed circuit board 2 near the opening of the housing 1, corresponding to the positions of the two upper first lifting lugs 4, a first vibration damping member 5 is threadedly connected. The other end of the first vibration damping member 5 is threadedly connected to its adjacent first lifting lug 4. On the side of the lower printed circuit board 3 near the opening of the housing 1, corresponding to the positions of the lower first lifting lug 4, a second vibration damping member 7 is threadedly connected. The other end of the second vibration damping member 7 is threadedly connected to its adjacent first lifting lug 4. The first vibration damping member 5 and the second vibration damping member 7 are separately configured to reduce the vibration transmission between the housing 1 and the printed circuit board.

[0019] Specifically, see Figures 5-6 The first damping component 5 includes a first longitudinal portion 51, a first curved portion 52 and a first transverse portion 53 integrally connected together; the first longitudinal portion 51 has a first longitudinal connecting hole 54 on its surface near the adjacent first lifting lug 4, and the first longitudinal connecting hole 54 is fastened to the adjacent first lifting lug 4 by bolts; the first transverse portion 53 has a first transverse connecting hole 55 on its surface near the adjacent first lifting lug 4, and the first transverse connecting hole 55 is fixedly connected to the adjacent lower surface of the upper printed circuit board 2 by bolts. Similarly, the second damping member 7 includes a second longitudinal portion 71, a second curved portion 72 and a second transverse portion 73 integrally connected. The second longitudinal portion 71 has a second longitudinal connecting hole 74 on its surface near the adjacent first lifting lug 4. The second longitudinal connecting hole 74 is fastened to the adjacent first lifting lug 4 by bolts. The second transverse portion 73 has a second transverse connecting hole 75 on its surface facing the adjacent first lifting lug 4. The second transverse connecting hole 75 is fixedly connected to the adjacent upper surface of the lower printed circuit board 3 by bolts. The first longitudinal portion 51 and the second longitudinal portion 71 have the same shape and size, and the first curved portion 52 and the second curved portion 72 have the same shape and size. When the length of the upper printed circuit board 2 is shorter than the length of the lower printed circuit board 3 and the width of the two are the same, the upper printed circuit board 2 is located above the lower printed circuit board 3 and is centrally positioned. The length of the first transverse portion 53 is longer than the length of the second transverse portion 73, and the first transverse connecting hole 55 and the second transverse connecting hole 75 are staggered. When the housing 1 and the printed circuit board vibrate, the separately configured first damping member 5 and the second damping member 7 not only have a damping effect, but also save material and are easy to assemble and disassemble.

[0020] See Figure 5 as well as Figure 7 A third vibration damping component 8 is connected to the upper printed circuit board 2 and the lower printed circuit board 3 at the position corresponding to the second lifting lug 6 on the side near the closing plate 9. One end of the third vibration damping component 8 is fastened to the upper printed circuit board 2 by a thread, and the other end of the third vibration damping component 8 is fastened to the lower printed circuit board 3 by a thread. Specifically, the third damping member 8 includes a third transverse portion 81, a third longitudinal portion 83, a fourth longitudinal portion 84, and a fourth transverse portion 87 integrally connected. The third transverse portion 81 and the fourth transverse portion 87 are parallel and fixedly connected on the same side by the third longitudinal portion 83. The surface of the third transverse portion 81 has at least one third transverse connecting hole 82, wherein the third transverse connecting hole 82 located away from the sealing plate 9 is fixedly connected to the upper printed plate 2 by bolts. The fourth longitudinal portion 84 is perpendicular to the third longitudinal portion 83. The surface of the fourth longitudinal portion 84 near its adjacent second lifting lug 6 has a fourth longitudinal connecting hole 85, and the fourth longitudinal connecting hole 85 is connected to the adjacent second lifting lug 6. The components are connected by threads. The surface of the fourth transverse part 87 is provided with a fourth transverse connection hole 86, which is fixedly connected to the lower printed circuit board 3 by bolts. The connection points of the third transverse part 81 and the fourth transverse part 87 with the fourth longitudinal part 84 are designed with rounded corners. When the entire bracket is subjected to external excitation, the first bending part 52, the second bending part 72 and the above-mentioned rounded corner design will generate hysteretic deformation to dissipate energy, thereby absorbing vibration stress, offsetting and reducing the vibration through the transmission path, and realizing the vibration reduction function. Through the vibration isolation principle, the excitation transmitted by the sensor through the lifting lug is consumed, thereby greatly reducing the vibration transmitted to the printed circuit board.

[0021] In the case where the length of the upper printed circuit board 2 is shorter than the length of the lower printed circuit board 3 and the width of both is the same, the upper printed circuit board 2 is positioned above the lower printed circuit board 3 in a central location. The third transverse connecting hole 82 and the fourth transverse connecting hole 86, which are located away from the sealing plate 9, are staggered to prevent unnecessary collisions during the vibration damping process.

[0022] The first damping component 5, the second damping component 7, and the third damping component 8 are made of DMnCu20Ni5Fe2 vibration damping alloy, which has the damping characteristics of rubber and the strength of structural steel. The principle is to consume the energy generated by vibration through the generation and movement of internal twins, thereby achieving the purpose of vibration reduction. In addition, the first damping component 5 and the corresponding second damping component 7 below it adopt a split design, which can be processed into the shape of the vibration reduction structure by only using a bending process. This makes it easy to mass-produce in the later stage, lighter and reduces the space occupation rate. It will not interfere with the components on the printed circuit board, thus achieving longitudinal vibration reduction. The third damping component 8, through its own structural design and connection with the second lifting lug 6, performs longitudinal and lateral vibration reduction, improving the connection stability and vibration reduction effect.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model, 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 this utility model.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A vibration damping mechanism for mounting printed circuit boards, comprising a housing (1), wherein an upper printed circuit board (2) and a lower printed circuit board (3) are respectively placed parallel to each other from top to bottom inside the housing (1), one end of the housing (1) is open, and a closing plate (9) is fixedly connected to the end of the housing (1) away from the opening, characterized in that: The upper printed circuit board (2) is connected to a first damping member (5) on the side near the opening of the housing (1), and the lower printed circuit board (3) is connected to a second damping member (7) on the side near the opening of the housing (1). The first damping member (5) and the second damping member (7) are separately configured. The upper printed circuit board (2) and the lower printed circuit board (3) are each connected to a third damping member (8) at both ends near the closing plate (9). One end of the third damping member (8) is fastened to the upper printed circuit board (2) by a thread, and the other end of the third damping member (8) is fastened to the lower printed circuit board (3) by a thread.

2. The vibration damping mechanism for printed circuit board mounting according to claim 1, characterized in that: The housing (1) is provided with four first lifting lugs (4) around the inner wall near the opening. The four first lifting lugs (4) are divided into two upper ones and two lower ones. The four first lifting lugs (4) are evenly and fixedly distributed on the inner wall of the housing (1) near the opening with the central axis of the housing (1) as the center. The first damping member (5) is connected to the two upper first lifting lugs (4) respectively.

3. The vibration damping mechanism for printed circuit board mounting according to claim 2, characterized in that: The first damping member (5) includes a first longitudinal part (51), a first curved part (52) and a first transverse part (53) integrally connected. The first longitudinal part (51) has a first longitudinal connecting hole (54) on its surface near the first lug (4). The first longitudinal connecting hole (54) is fastened to the first lug (4) near its surface by bolts. The first transverse part (53) has a first transverse connecting hole (55) on its surface near the first lug (4). The first transverse connecting hole (55) is fixedly connected to the lower surface of the upper printed circuit board (2) near its surface by bolts.

4. The vibration damping mechanism for printed circuit board mounting according to claim 3, characterized in that: The second damping member (7) includes a second longitudinal part (71), a second curved part (72), and a second transverse part (73) integrally connected. The second longitudinal part (71) has a second longitudinal connecting hole (74) on its surface near the first lifting lug (4). The second longitudinal connecting hole (74) is fastened to the first lifting lug (4) near it by bolts. The second transverse part (73) has a second transverse connecting hole (75) on its surface facing the first lifting lug (4). The second transverse connecting hole (75) is fixedly connected to the upper surface of the lower printed circuit board (3) near it by bolts.

5. A vibration damping mechanism for printed circuit board mounting according to claim 4, characterized in that: Two second lifting lugs (6) are provided on the inner wall of the housing (1) near the closed plate (9). The two second lifting lugs (6) are arranged opposite each other and located at the height of the central axis of the housing (1). The third damping member (8) is threadedly connected to its adjacent second lifting lug (6).

6. The vibration damping mechanism for printed circuit board mounting according to claim 5, characterized in that: The third damping component (8) includes a third transverse portion (81), a third longitudinal portion (83), a fourth longitudinal portion (84), and a fourth transverse portion (87) integrally connected. The third transverse portion (81) and the fourth transverse portion (87) are arranged parallel to each other and are fixedly connected on the same side by the third longitudinal portion (83). The surface of the third transverse portion (81) is provided with at least one third transverse connecting hole (82), wherein the third transverse connecting hole (82) located away from the sealing plate (9) is connected to the upper printed... The plate (2) is fixedly connected, and the fourth longitudinal part (84) is perpendicular to the third longitudinal part (83); the fourth longitudinal part (84) has a fourth longitudinal connecting hole (85) on its surface near the adjacent second lifting lug (6), and the fourth longitudinal connecting hole (85) is threadedly connected to the adjacent second lifting lug (6); the surface of the fourth transverse part (87) has a fourth transverse connecting hole (86), and the fourth transverse connecting hole (86) is fixedly connected to the lower printed plate (3) by bolts.

7. A vibration damping mechanism for printed circuit board mounting according to claim 6, characterized in that: The upper printed circuit board (2) is shorter than the lower printed circuit board (3) and the two have the same width. The upper printed circuit board (2) is located above the lower printed circuit board (3) and is centrally positioned.

8. A vibration damping mechanism for printed circuit board mounting according to claim 7, characterized in that: The first transverse connecting hole (55) and the second transverse connecting hole (75) are staggered.

9. A vibration damping mechanism for printed circuit board mounting according to claim 8, characterized in that: The third transverse connecting hole (82) located away from the closed plate (9) is offset from the fourth transverse connecting hole (86).

10. A vibration damping mechanism for printed circuit board mounting according to claim 9, characterized in that: The first damping component (5), the second damping component (7) and the third damping component (8) are all made of DMnCu20Ni5Fe2 vibration damping alloy.

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