A circuit board quick mounting structure

Abstract

This utility model belongs to the field of circuit board assembly technology, and particularly relates to a quick-installation structure for circuit boards, including a mounting shell. Two positioning feet are fixedly installed on the inner bottom wall of the mounting shell, and a circuit board body is provided on the two positioning feet. In this quick-installation structure, by aligning the two diagonal positioning holes on the circuit board body with the two positioning feet and inserting it, the raised lower pressure plate is first squeezed, causing the lower pressure plate to rotate around the pivot. During the rotation of the pull block, the switching spring is stretched. As the lower pressure plate continues to move, when the rotation angle of the pull block is greater than 90 degrees, the switching spring is stretched to its maximum angle and begins to retract. At this time, the pull block continues to move. The pull block drives the lower pressure plate to continue moving through the pivot until the fixing plate is attached to the upper side of the circuit board body, thus quickly positioning and fixing the circuit board body, effectively preventing the effect of "false fixing".

Description

Technical Field

[0001] This utility model belongs to the field of circuit board assembly technology, and in particular relates to a quick-assembly structure for circuit boards. Background Technology

[0002] In the field of electronic equipment manufacturing, the assembly efficiency and installation stability of circuit boards directly affect the overall production progress and operational reliability of the equipment.

[0003] Chinese patent CN220254753U discloses a rapid assembly circuit board structure. This patent uses limiting springs in the connecting blocks on both sides of the circuit board to push the limiting blocks, which cooperate with the limiting grooves of the mounting plate to achieve rapid fixation. At the same time, the design of connecting plates and push plate structures assists in disassembly, which to some extent solves the problem of time-consuming and labor-intensive traditional circuit board assembly.

[0004] The aforementioned patent has the following problems: This patent has several drawbacks in its use: it relies solely on manual alignment of the limiting blocks on both sides of the circuit board with the limiting slots on the mounting plate, without any guiding components or alignment markers. In practice, especially in batch assembly scenarios, operators need to repeatedly adjust the circuit board position to ensure the limiting blocks are accurately embedded in the limiting slots; even slight misalignment can lead to misalignment or failure to engage. If the circuit board is small or the installation space is limited, the precision of manual operation is further restricted, easily resulting in "fake" insertion. Therefore, we propose a quick-installation structure for the circuit board. Utility Model Content

[0005] The purpose of this invention is to provide a quick-installation structure for circuit boards to solve the problems mentioned in the background art.

[0006] In view of this, the present invention provides a quick-installation structure for a circuit board, including a mounting shell, wherein two positioning feet are fixedly installed on the inner bottom wall of the mounting shell, and a circuit board body is provided on the two positioning feet; A fixing plate is provided. Multiple mounting ears are fixedly mounted on the mounting housing. A rotating shaft is rotatably mounted on each of the mounting ears. The fixing plate is fixedly mounted on the rotating shaft and fits against the upper side of the circuit board body. A pressure plate is fixedly mounted on the rotating shaft. A switching disk is fixedly mounted on one end of the rotating shaft. A pull block is fixedly mounted on one side of the switching disk. A connecting block is fixedly mounted on the upper side of the mounting housing. A switching spring is fixedly mounted between the connecting block and the pull block.

[0007] In this technical solution, the mounting shell serves as the support and mounting base for the entire structure. Two positioning feet are fixedly installed diagonally on its inner bottom wall for initial positioning and diagonal support of the circuit board. The circuit board body is mounted on the two positioning feet. Four sets of mounting ears are also installed at the middle of the four sides of the inner bottom wall. The circuit board is rotated and mounted on the mounting ears via a rotating shaft. The fixing plate is used to press on the upper side of the circuit board body. One end of the rotating shaft extends out of the mounting shell and is fixedly mounted on the switching disk. During installation, the positioning holes on the circuit board body are aligned with the two positioning feet and lowered. During the pressing down of the circuit board, it will contact and press the lower pressure plate in the tilted state, forcing the fixing plate to rotate around the rotating shaft. The rotating shaft drives the switching disk and the pull block to rotate together, thereby stretching the switching spring. When the pull block rotates past the critical point by 90°, the direction of the tension of the switching spring changes from resisting rotation to promoting rotation, producing a rapid switching effect of "passing the midpoint". This instantly drives the fixing plate to press down quickly and fit tightly against the circuit board surface, completing the rapid clamping and realizing the action of "slow pressing in - fast locking". The clamping process is fast and decisive, effectively preventing the phenomenon of "false fixing". At the same time, no additional screws or complicated operations are required, resulting in high assembly efficiency.

[0008] In the above technical solution, further, a lower pressure plate is fixedly installed on the rotating shaft, a plurality of arc-shaped grooves are opened on the inner bottom wall of the mounting shell, a plurality of mounting grooves are opened on the lower side of the mounting shell, a connecting hole is opened on the inner top wall of the plurality of mounting grooves, the connecting hole is connected to the arc-shaped groove, a positioning pin is slidably installed in the connecting hole, and an insertion hole is opened on the lower side of the lower pressure plate.

[0009] In this technical solution, multiple arc-shaped grooves are formed on the inner bottom wall of the mounting housing to provide trajectory space for the movement of the lower pressure plate. When the fixing plate quickly presses the circuit board under the "midpoint" effect, its linkage component, the lower pressure plate, also moves to a specific position. At this time, the insertion hole on the lower pressure plate is aligned with the positioning pin below. Under the action of spring force, the positioning pin automatically springs up and enters the insertion hole, forming a mechanical interlock, which physically prevents the lower pressure plate and the fixing plate from rebounding, thus achieving secondary locking.

[0010] In the above technical solution, further, a pull rod is fixedly installed at the bottom end of the positioning pin, a sealing cover is fixedly installed in the mounting groove, a limit ring is fixedly installed on the surface of the pull rod, the limit ring is slidably installed in the mounting groove, a sealing cover is fixedly installed in the mounting groove, the pull rod is slidably installed on the sealing cover, and a return spring is fixedly installed between the sealing cover and the limit ring.

[0011] In this technical solution, under normal conditions, the return spring's elastic force pushes the limiting ring upwards, thereby pushing the pull rod and the positioning pin, causing them to tend to pop out upwards. When the insertion hole is aligned, the pin immediately pops in and locks. To unlock, the pull rod must be manually pulled downwards to overcome the force of the return spring and pull the positioning pin out of the insertion hole. This ensures that the pin automatically pops out after each locking, preventing forgetting to lock and improving security.

[0012] In the above technical solution, the bottom end of the lower pressure plate is arc-shaped, and the top end of the positioning pin is provided with a guide slope.

[0013] In this technical solution, the arc-shaped bottom end of the lower pressure plate and the top end of the pin with the guide bevel allow for smoother guidance and insertion during contact and movement, reducing jamming and wear, making the clamping and locking process smoother, and improving the operating feel.

[0014] In the above technical solution, a plurality of heat dissipation holes are further provided on the lower side of the mounting shell.

[0015] In this technical solution, the heat dissipation holes provide a convection channel for heat dissipation generated during the operation of the circuit board.

[0016] In the above technical solution, further, the radius of the top end of the positioning foot is greater than the radius of the bottom end.

[0017] In this technical solution, the radius of the top of the positioning foot is larger than the radius of its bottom, forming a slight taper or chamfer, which can make the circuit board body float in the air.

[0018] In the above technical solution, the positioning foot, fixing plate and pressure plate are all made of PVC material.

[0019] In this technical solution, PVC material can provide excellent insulation, preventing leakage or short circuits in the circuit board itself.

[0020] The beneficial effects of this utility model are: 1. This quick-installation structure for the circuit board involves aligning the two diagonal positioning holes on the circuit board body with the two positioning feet and inserting the board downwards. This first squeezes the raised lower pressure plate, causing it to rotate around a pivot. Simultaneously, the pivot rotates the switching disc, which in turn rotates the pull block. As the pull block rotates, it stretches the switching spring. With the continuous movement of the lower pressure plate, when the pull block rotates to an angle greater than 90 degrees, the switching spring stretches to its maximum angle and begins to retract. This causes the pull block to continue moving. The pull block, through the pivot, drives the lower pressure plate to continue moving until the fixing plate is in contact with the upper side of the circuit board body, thus quickly positioning and fixing the circuit board body and effectively preventing "false fixing".

[0021] 2. In this quick-installation structure for the circuit board, when the fixing piece is attached to the upper side of the circuit board body, the insertion hole of the lower pressure piece aligns with the positioning pin. The spring force of the return spring drives the limit ring to move upward, and the limit ring drives the positioning pin to insert into the insertion hole, thus fixing the lower pressure piece and completing the fixing of the fixing piece, increasing the stability of the fixing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the fixing plate and its related structures in this utility model; Figure 3 In this utility model Figure 2 Enlarged structural diagram of region A in the middle; Figure 4 This is a cross-sectional view of the mounting shell in this utility model.

[0023] The markings in the diagram are as follows: 1. Mounting housing; 2. Positioning feet; 3. Circuit board body; 4. Fixing plate; 5. Heat dissipation hole; 6. Lower pressure plate; 7. Rotating shaft; 8. Switching disc; 9. Pull block; 10. Connecting block; 11. Switching spring; 12. Arc groove; 13. Pull rod; 14. Limit ring; 15. Return spring; 16. Sealing cover; 17. Positioning pin. Detailed Implementation

[0024] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0025] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Example 1: This example provides a quick-installation structure for a circuit board, including a mounting shell 1. Two positioning feet 2 are fixedly installed on the inner bottom wall of the mounting shell 1, and a circuit board body 3 is provided on the two positioning feet 2. The mounting housing 1 has multiple mounting ears fixedly mounted on the mounting plate 4. Each mounting ear has a rotating shaft 7 rotatably mounted on it. The mounting plate 4 is fixedly mounted on the rotating shaft 7 and fits against the upper side of the circuit board body 3. The rotating shaft 7 has a lower pressure plate 6 fixedly mounted on it. One end of the rotating shaft 7 has a switching disk 8 fixedly mounted on it. One side of the switching disk 8 has a pull block 9 fixedly mounted on it. The upper side of the mounting housing 1 has a connecting block 10 fixedly mounted on it. The same switching spring 11 is fixedly mounted between the connecting block 10 and the pull block 9.

[0027] The mounting shell 1 serves as the support and mounting base for the entire structure. Two positioning feet 2 are fixedly installed at diagonal positions on its inner bottom wall for initial positioning and diagonal support of the circuit board. The circuit board body 3 is mounted on the two positioning feet 2. Four sets of mounting ears are also installed at the middle of the four sides of its inner bottom wall. The mounting ears are rotated and mounted on the mounting ears via the rotating shaft 7. The fixing plate 4 is used to press on the upper side of the circuit board body 3. One end of the rotating shaft 7 extends out of the mounting shell 1 and is fixedly mounted on the switching disk 8. During installation, the positioning holes on the circuit board body 3 are aligned with the two positioning feet 2 and the circuit board is lowered. During the pressing process, the circuit board will contact and press the lower pressure plate 6, which is in a raised state, forcing the fixing plate 4 to rotate around the rotating shaft 7. The rotating shaft 7 drives the switching disk 8 and the pull block 9 to rotate together, thereby stretching the switching spring 11. When the pull block 9 rotates past the critical point of 90°, the direction of the pulling force of the switching spring 11 changes from resisting rotation to promoting rotation, producing a rapid switching effect of "passing the midpoint". This instantly drives the fixing plate 4 to press down quickly and fit tightly against the circuit board surface, completing the rapid clamping and realizing the action of "slow pressing in - fast locking". The clamping process is fast and decisive, effectively preventing the phenomenon of "false fixing". At the same time, no additional screws or complicated operations are required, resulting in high assembly efficiency.

[0028] Example 2: This example provides a quick-installation structure for a circuit board. In addition to the technical solutions of the above examples, it also has the following technical features: the inner bottom wall of the mounting shell 1 is provided with multiple arc-shaped grooves 12, the lower side of the mounting shell 1 is provided with multiple mounting grooves, the inner top wall of each of the multiple mounting grooves is provided with a connecting hole, the connecting hole is connected to the arc-shaped groove 12, a positioning pin 17 is slidably installed in the connecting hole, and an insertion hole is provided on the lower side of the lower pressure plate 6.

[0029] Multiple arc-shaped grooves 12 are formed on the inner bottom wall of the mounting housing 1 to provide trajectory space for the movement of the lower pressure plate 6. When the fixing plate 4 quickly presses the circuit board under the "midpoint" effect, its linkage component, the lower pressure plate 6, also moves to a specific position. At this time, the insertion hole on the lower pressure plate 6 is aligned with the positioning pin 17 below. Under the action of spring force, the positioning pin 17 automatically springs up and enters the insertion hole, forming a mechanical interlock, which physically prevents the lower pressure plate 6 and the fixing plate 4 from springing back, thus achieving secondary locking.

[0030] Example 3: This example provides a quick-installation structure for a circuit board. In addition to the technical solutions of the above examples, it also has the following technical features: a pull rod 13 is fixedly installed at the bottom of the positioning pin 17; a sealing cover 16 is fixedly installed in the mounting groove; a limiting ring 14 is fixedly installed on the surface of the pull rod 13; the limiting ring 14 is slidably installed in the mounting groove; a sealing cover 16 is fixedly installed in the mounting groove; the pull rod 13 is slidably installed on the sealing cover 16; and a return spring 15 is fixedly installed between the sealing cover 16 and the limiting ring 14.

[0031] In its natural state, the return spring 15 pushes the limiting ring 14 upwards, thereby pushing the pull rod 13 and the positioning pin 17, causing them to spring upwards. When the insertion hole is aligned, the pin immediately springs in and locks. To unlock, the pull rod 13 must be manually pulled downwards to overcome the force of the return spring 15, pulling the positioning pin 17 out of the insertion hole. This ensures that the pin automatically pops out after each locking, preventing forgetting to lock and improving security.

[0032] Example 4: This example provides a quick-connect structure for a circuit board. In addition to the technical solutions of the above examples, it also has the following technical features: the bottom end of the lower pressure plate 6 is arc-shaped, and the top end of the positioning pin 17 is provided with a guide slope.

[0033] The curved bottom end of the lower pressure plate 6 and the top of the pin with a guide bevel allow for smoother guidance and insertion during contact and movement, reducing jamming and wear, making the clamping and locking process smoother, and improving the operating feel.

[0034] Example 5: This example provides a quick-installation structure for a circuit board. In addition to the technical solutions of the above examples, it also has the following technical features: multiple heat dissipation holes 5 are provided on the lower side of the mounting shell 1.

[0035] Among them, heat dissipation hole 5 provides a convection heat dissipation channel for the heat generated when the circuit board is working.

[0036] Example 6: This example provides a quick-connect structure for a circuit board. In addition to the technical solutions of the above examples, it also has the following technical features: the radius of the top end of the positioning foot 2 is greater than the radius of the bottom end.

[0037] The radius of the top of the positioning foot 2 is greater than the radius of its bottom, forming a slight taper or chamfer, which can make the circuit board body 3 float in the air.

[0038] Example 7: This example provides a quick-installation structure for a circuit board. In addition to the technical solutions of the above examples, it also has the following technical features: the positioning foot 2, the fixing piece 4, and the lower pressure piece 6 are all made of PVC.

[0039] Among them, PVC material can provide good insulation to prevent leakage or short circuit in the circuit board body 3.

[0040] Working principle: When installing the circuit board body 3, first align the two diagonal positioning holes on the circuit board body 3 with the two positioning feet 2 and insert them, and continuously press the circuit board body 3 to make it move downward. During the pressing process, the circuit board body 3 moves downward, first squeezing the raised lower pressure plate 6, causing the lower pressure plate 6 to rotate around the rotating shaft 7. At the same time, the rotating shaft 7 drives the switching disk 8 to rotate, which in turn drives the pull block 9 to rotate. During the rotation of the pull block 9, the switching spring 11 is stretched. As the lower pressure plate 6 continues to move, when the rotation angle of the pull block 9 is greater than 90 degrees, the switching spring 11 is stretched to its maximum angle and begins to retract. At this time, the pull block 9 continues to move. The pull block 9 drives the lower pressure plate 6 to continue to move through the rotating shaft 7 until the fixing plate 4 is in contact with the upper side of the circuit board body 3. When the fixing piece 4 is attached to the upper side of the circuit board body 3, the insertion hole of the lower pressure piece 6 is aligned with the positioning pin 17. The spring force of the return spring 15 drives the limiting ring 14 to move upward. The limiting ring 14 drives the positioning pin 17 to insert into the insertion hole, thereby fixing the lower pressure piece 6, thus completing the fixing of the fixing piece 4, and then completing the installation of the circuit board body 3.

[0041] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A quick-installation structure for a circuit board, characterized in that, include: Mounting housing (1), the inner bottom wall of which is fixedly mounted with two positioning feet (2), and the two positioning feet (2) are provided with circuit board bodies (3). The mounting shell (1) is fixedly mounted with a plurality of mounting ears, and a rotating shaft (7) is rotatably mounted on each of the mounting ears. The mounting shell (4) is fixedly mounted on the rotating shaft (7) and the mounting shell (4) is attached to the upper side of the circuit board body (3). A pressure plate (6) is fixedly mounted on the rotating shaft (7). A switching disk (8) is fixedly mounted on one end of the rotating shaft (7). A pull block (9) is fixedly mounted on one side of the switching disk (8). A connecting block (10) is fixedly mounted on the upper side of the mounting shell (1). The same switching spring (11) is fixedly mounted between the connecting block (10) and the pull block (9).

2. The circuit board quick-connect structure according to claim 1, characterized in that, The inner bottom wall of the mounting shell (1) is provided with multiple arc-shaped grooves (12), the lower side of the mounting shell (1) is provided with multiple mounting grooves, the inner top wall of each of the multiple mounting grooves is provided with a connecting hole, the connecting hole is connected to the arc-shaped groove (12), a positioning pin (17) is slidably installed in the connecting hole, and the lower pressure plate (6) is provided with an insertion hole on its lower side.

3. The quick mounting structure of a circuit board according to claim 2, wherein A pull rod (13) is fixedly installed at the bottom end of the positioning pin (17). A sealing cover (16) is fixedly installed in the mounting groove. A limit ring (14) is fixedly installed on the surface of the pull rod (13). The limit ring (14) is slidably installed in the mounting groove. A sealing cover (16) is fixedly installed in the mounting groove. The pull rod (13) is slidably installed on the sealing cover (16). A return spring (15) is fixedly installed between the sealing cover (16) and the limit ring (14).

4. The circuit board quick-connect structure according to claim 3, characterized in that, The bottom end of the lower pressure plate (6) is arc-shaped, and the top end of the positioning pin (17) is provided with a guide slope.

5. The quick mounting structure of a circuit board according to claim 1, wherein The mounting shell (1) has multiple heat dissipation holes (5) on its lower side.

6. The circuit board quick-connect structure according to claim 1, characterized in that, The radius of the top end of the positioning foot (2) is greater than the radius of the bottom end.

7. The circuit board quick-connect structure according to claim 1, characterized in that, The positioning foot (2), fixing plate (4) and pressure plate (6) are all made of PVC.

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