Push-pull type circuit board placing rack

Abstract

The utility model discloses a push-pull type circuit board placing rack. The push-pull type circuit board placing rack comprises a frame structure, a push-pull bearing structure and a connecting rod structure, the frame structure is composed of a base, supporting columns and a containing frame top cover, each column body is provided with a push-pull rod moving hole and a pulley, supporting beams and auxiliary beams are arranged between the columns, and idler wheels are installed at the tail ends of the auxiliary beams. The push-pull bearing structure is composed of a push-pull rod and a bearing box, and the push-pull rod drives the connecting rod structure to drive the bearing box to stretch out and draw back. The connecting rod structure is composed of a push-pull rod connecting part, a bearing box connecting part and a connecting rod, and the connecting rod is provided with a ball. Clamping plate grooves are formed in the front wall and the rear wall of the bearing box and matched with the clamping plates to adjust the bearing specification of the device. Through the push-and-pull linkage mechanism and the modular design, the problems that a traditional containing frame is poor in compatibility and lacks protection are solved, and wide market prospects are achieved.

Description

Technical Field

[0001] This utility model relates to a circuit board placement rack, and more particularly to a push-pull circuit board placement rack. Background Technology

[0002] In modern electronics manufacturing, circuit boards (PCBs) have become an indispensable and crucial component. As core components of electronic devices, they need to be repeatedly stored and retrieved during production, testing, and transportation. However, traditional PCB racks typically employ a fixed structural design, which limits their load-bearing capacity and leads to poor compatibility between PCBs of different sizes.

[0003] Meanwhile, traditional circuit board racks have a significant problem: their exposed structure fails to provide effective protection for the circuit boards they support. The electronic components on circuit boards are relatively fragile. During operator access or the movement of unauthorized personnel, circuit boards on traditional racks are exposed to the environment and are at risk of accidental damage. Furthermore, prolonged exposure to the environment without shielding makes circuit boards susceptible to contamination from dust and impurities, which can affect their sensitivity or even cause short circuits. Utility Model Content

[0004] To address the shortcomings of the aforementioned technologies, this utility model provides a push-pull type circuit board placement rack.

[0005] To solve the above technical problems, the technical solution adopted by this utility model is: a push-pull circuit board placement rack, which includes:

[0006] The frame structure includes a base, on which four support columns are set perpendicular to the upper end face. The upper end of the support columns is connected to the top cover of the placement rack. The four support columns are arranged in a rectangular pattern. Several support beams parallel to the long side of the base are set between two support columns. Auxiliary beams are set on the support beams and are arranged in an array along the support column body.

[0007] The push-pull load-bearing structure includes a push-pull rod that runs through two support columns, with handles at both ends of the push-pull rod, and a load-bearing box connected to the push-pull rod via a linkage structure.

[0008] The linkage structure includes a push-pull rod connecting part on the side of the push-pull rod, a carrier box connecting part on the bottom of the carrier box, and a connecting rod. The connecting rod is hinged to the push-pull rod connecting part and the carrier box connecting part through a first axle pin and a second axle pin, respectively.

[0009] Furthermore, the support column has an array of push-pull rod movable holes along the column body, and an array of pulleys are installed inside the column body by fixing pins. One push-pull rod movable hole matches one pulley, and all pulleys are located below the push-pull rod movable hole.

[0010] Furthermore, the support beam extends outward from its side to form an auxiliary beam, the end of which is connected to a roller via a fixing pin.

[0011] Furthermore, one end of the connecting rod is provided with a spherical groove, and a ball bearing is installed in the groove.

[0012] Furthermore, the carrier box connecting parts are arrayed at the bottom of the carrier box, and the carrier box connecting parts and the side wall of the carrier box are inclined.

[0013] Furthermore, the front and rear walls of the carrier box are provided with arrayed card plate grooves, and the middle part of the card plate grooves is provided with arc-shaped protrusions.

[0014] Furthermore, a card plate is installed in the card plate groove, and card posts that match the card plate groove extend from the center of both sides of the card plate.

[0015] This invention provides a push-pull circuit board placement rack. Through the cooperation of the mounting plate groove and modular mounting plate, the carrying capacity of the mounting box can be adjusted, thus accommodating several different circuit board sizes. Furthermore, the invention utilizes a linkage mechanism, allowing the mounting box to extend and retract to both sides of the device. In the retracted state, the mounting box is sheltered by the upper structure, effectively preventing accidental damage to the circuit boards inside. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the frame structure.

[0018] Figure 3 This is a partial view of the roller section of the frame structure.

[0019] Figure 4 This is a partial view of the pulley section of the frame structure.

[0020] Figure 5 This is a schematic diagram of a push-pull load-bearing structure.

[0021] Figure 6 This is a schematic diagram of the carrier box.

[0022] Figure 7 This is a partial view of the carrier box.

[0023] Figure 8 This is the bottom view of the carrier box.

[0024] Figure 9 This is a schematic diagram of the card plate structure.

[0025] Figure 10 This is a schematic diagram of the connecting rod.

[0026] Figure 11 This is a diagram showing the shrinkage effect of the single-layer push-pull load-bearing structure of this utility model.

[0027] Figure 12 This is a diagram illustrating the stretching effect of the single-layer push-pull load-bearing structure of this utility model.

[0028] In the diagram: 1. Frame structure; 2. Push-pull load-bearing structure; 11. Support column; 12. Support beam; 13. Protrusion; 14. Push-pull rod movable hole; 15. Pulley; 16. Roller; 17. Fixing pin; 21. Push-pull rod; 22. Push-pull rod connecting part; 23. Load-bearing box; 24. Load-bearing box connecting part; 25. Connecting rod; 26. No. 1 shaft pin; 27. No. 2 shaft pin; 28. Groove; 29. ​​Ball bearing; 30. Clamping plate. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] This utility model provides a push-pull circuit board placement rack, the overall structure of which is as follows: Figure 1 As shown, it mainly consists of a frame structure 1, a push-pull load-bearing structure 2, and a connecting rod structure that connects the two.

[0031] like Figure 2 As shown, frame structure 1 is the main load-bearing structure of the device. The base of frame structure 1 is rectangular, and four support columns 11 perpendicular to its upper surface are set on the base. The upper end of the support columns 11 is connected to the top cover of the placement frame, thus forming the load-bearing frame of the entire device. Figure 4 As shown, the four support columns 11 are hollow tubular structures, rectangularly distributed on the base. Each support column 11 has several arrayed push-pull rod movable holes 14 along its body. Inside the column, several arrayed pulleys 15 are arranged along its body, with the spacing between the pulleys 15 and the push-pull rod movable holes 14 being consistent. The pulleys 15 are positioned below the push-pull rod movable holes 14 and are installed inside the support column 11 by fixing pins 17. The diameter of the push-pull rod movable holes 14 is slightly larger than the outer diameter of the push-pull rod 21, allowing the push-pull rod 21 to pass through the support column 11 and move back and forth along the opening direction. The surfaces of the pulleys 15 inside the support column 11 contact the push-pull rod 21, effectively reducing the frictional resistance experienced by the push-pull rod 21 during movement, facilitating the subsequent extension and retraction of the carrier box 23 by the push-pull rod 21.

[0032] Several support beams 12, parallel to the long side of the base, are arranged between the two support columns 11. These support beams 12 are arranged in an array along the column bodies of the support columns 11, and the spacing between the support beams 12 is consistent with the spacing between the pulleys 15 and the sliding holes 14 of the push-pull rod. Figure 3 As shown, the side of the support beam 12 bends outward and extends to form an auxiliary beam 13 parallel to the short side of the base. The end of the auxiliary beam 13 has a slot for mounting a roller 16, which is then mounted in the slot via a fixing pin 17. When the support box 23 is retracted, the auxiliary beam 13 is located between the push-pull rod connection 22 and the support box connection 24. The arrangement of the auxiliary beam 13 and the roller 16 provides guidance for the movement of the push-pull support structure 2, thereby limiting the displacement direction of the support box 23.

[0033] The overall structure of push-pull load-bearing structure 2 is as follows: Figure 5 As shown, it includes a push-pull rod 21 that passes through two support columns 11. Handles are installed at both ends of the push-pull rod 21, which is connected to the carrier box 23 via a linkage mechanism. Specifically, the sides of the push-pull rod 21 are provided with arrayed push-pull rod connecting parts 22, which are hinged to the connecting rod 25 via a first pivot pin 26. The bottom of the carrier box 23 is provided with arrayed carrier box connecting parts 24, which are hinged to the connecting rod 25 via a second pivot pin 27, thus forming the linkage structure of the entire device.

[0034] It should be noted that, as Figure 10 The connecting rod 25 shown has a spherical groove, in which a ball bearing 29 is installed. One end of the connecting rod 25 with the spherical groove is connected to the connecting part 24 of the carrier box. The ball bearing 29 contacts the lower end face of the carrier box 23, reducing the frictional resistance experienced by the carrier box 23 during its movement. Figure 8 The carrier box connecting part 24 shown is located at the bottom of the carrier box 23. The carrier box connecting part 24 and the side wall of the carrier box 23 have a certain slope. When the connecting rod 25 is pushed by force, the slope of the carrier box connecting part 24 causes it to move outward against the roller 16, preventing it from getting stuck due to the rigidity of the linkage structure. This design of the carrier box connecting part 24 allows the linkage structure to drive the carrier box 23 to extend and retract more smoothly when the push-pull rod 21 moves. In addition, the interval distance between the push-pull rod connecting parts 22 and the carrier box connecting part 24 is the same, and the interval distance can be adjusted to increase or decrease the linkage structure to adjust the load-bearing capacity of the carrier box 23.

[0035] like Figure 6 and Figure 7 As shown, the front and rear walls of the carrier box 23 are provided with arrayed card slots 28, and the middle part of the card slots 28 is provided with an arc-shaped protrusion. Figure 9The card plate 30 shown has cylindrical retaining posts at the center of both sides. The outer diameter of the retaining posts is slightly larger than the gap of the arc-shaped protrusion in the middle of the card plate groove 28. Therefore, when the card plate 30 is installed in the carrier box 23, the card plate groove 28 will restrict the retaining posts on both sides of the card plate 30, preventing the card plate 30 from accidentally detaching from the carrier box 23. The card plate 30 is a detachable partition plate. By adjusting the number and position of the card plates 30, the carrying capacity of the carrier box 23 can be adjusted to accommodate circuit boards of various sizes.

[0036] The specific operation process of this utility model is as follows: Figure 11 and Figure 12 :

[0037] When the device is in the retracted state, the operator holds the handle at the more protruding end and pushes it inward. At this time, the push-pull rod 21 slides to the other end along the opening direction of the push-pull rod movable hole 14, and the connecting rod structure connected to the push-pull rod 21 moves in the same direction. As the carrier box connecting part 24 abuts against the auxiliary beam 13 and its end roller 16, the carrier box 23 and the carrier box connecting part 24 change from moving in the direction of movement of the push-pull rod 21 to moving away from the push-pull rod 21. The connecting rod 25, under the action of the push-pull force, changes from translating in the direction of movement of the push-pull rod 21 to rotating until it is close to the auxiliary beam 13 and its end roller 16, that is, pushing the push-pull rod 21 and driving the carrier box 23, so that the push-pull bearing structure 2 changes from the retracted state to the extended state. Under the action of the push-pull rod 21 and the push-pull structure, the carrier box 23 is exposed from the cover of the upper carrier box 23, and the operator can take out the circuit board or store the circuit board in the carrier box.

[0038] When the device is in the extended state, the operator holds the handle close to the support 11 and pulls it outward. The push-pull rod 21 slides towards the operator along the opening direction of the push-pull rod movable hole 14 until the push-pull rod connecting part 22 of the push-pull rod 21 abuts against the auxiliary beam 13. At this time, the push-pull rod 21 drives the connecting rod 25 and the carrier box 23 connected to the connecting rod 25 to move along the moving direction of the push-pull rod 21. Then, the operator pushes the carrier boxes 23 on both sides to retract inward until the carrier box connecting part 24 contacts the auxiliary beam 13 and its end roller 16. That is, pulling the push-pull rod 21 and pushing the carrier box 23 causes the push-pull bearing structure 2 to change from the extended state to the retracted state. During this process, the carrier box 23 retracts from being exposed to the outside to being sheltered by its upper carrier box 23, providing effective protection for the circuit board in the carrier box.

[0039] The motion mechanism of this device relies on the linkage of the push-pull rod 21, the connecting rod 25, and the carrier box 23. The linear motion of the push-pull rod is converted into the translation of the carrier box 23 through the connecting rod 25. The kinematic relationship is precisely designed so that the carrier box 23 can completely escape the frame's shielding range when it extends and accurately return to the top cover or the area below the upper carrier box when it retracts. The pulley 15 inside the push-pull rod's movable hole 14 and the support column 11, together with the auxiliary beam 13 and its end roller 16, form a dual guiding system. This system not only constrains the movement direction of the push-pull rod 21 and the carrier box 23 but also counteracts the lateral force caused by uneven load on the carrier box 23, ensuring the reliability of the overall structure under heavy load conditions. The modular design of the clamping plate 30 gives the device flexibility in load-bearing specifications, allowing operators to adjust the load-bearing specifications of the carrier box 23 according to the actual specifications of the circuit board.

[0040] This invention integrates circuit board protection and convenient storage / retrieval functions through the synergistic effect of a frame structure, a push-pull load-bearing structure, and a linkage structure. The modular design of the card significantly improves its adaptability to circuit boards of various sizes. The movement trajectories of each component during the push-pull process have been rigorously calculated and experimentally verified, demonstrating good structural reliability and meeting the needs of the electronics manufacturing industry for circuit board storage devices. This device overcomes the shortcomings of traditional placement racks, such as poor compatibility and lack of protection, and has broad application prospects.

[0041] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. A push-pull circuit board rack, characterized in that, It includes: The frame structure (1) includes a base, on which four support columns (11) perpendicular to its upper end are provided. The upper end of the support columns (11) is connected to the top cover of the placement rack. The four support columns (11) are arranged in a rectangular pattern. Several support beams (12) parallel to the long side of the base are provided between two support columns (11). Auxiliary beams (13) are provided on the support beams (12), and the auxiliary beams (13) are arranged in an array along the column body of the support columns (11). The push-pull load-bearing structure (2) includes a push-pull rod (21) that passes through two support columns (11). The push-pull rod (21) has handles at both ends and is connected to a load-bearing box (23) via a linkage structure. The linkage structure includes a push-pull rod connecting part (22) provided on the side of the push-pull rod (21), a carrier box connecting part (24) provided at the bottom of the carrier box (23), and a connecting rod (25); the connecting rod (25) is hinged to the push-pull rod connecting part (22) and the carrier box connecting part (24) respectively through a first axle pin (26) and a second axle pin (27).

2. The push-pull circuit board placement rack according to claim 1, characterized in that: The support column (11) has an array of push-pull rod movable holes (14) along the column body. Inside the column body, there are an array of pulleys (15) installed by fixing pins (17). One push-pull rod movable hole (14) is matched with one pulley (15), and the pulleys (15) are all located below the push-pull rod movable hole (14).

3. The push-pull circuit board placement rack according to claim 1, characterized in that: The support beam (12) extends outward from the side to form an auxiliary beam (13), and the end of the auxiliary beam (13) is connected to a roller (16) by a fixing pin (17).

4. A push-pull circuit board rack according to claim 1, characterized in that: One end of the connecting rod (25) is provided with a spherical groove, and a ball bearing (29) is installed in the groove.

5. A push-pull circuit board placement rack according to claim 1, characterized in that: The carrier box connecting parts (24) are arranged in an array at the bottom of the carrier box (23), and the carrier box connecting parts (24) and the side wall of the carrier box (23) are inclined.

6. A push-pull circuit board rack according to claim 1, characterized in that: The front and rear walls of the carrier box (23) are provided with arrayed card plate grooves (28), and the middle part of the card plate grooves (28) is provided with an arc-shaped protrusion.

7. A push-pull circuit board placement rack according to claim 6, characterized in that: The card plate groove (28) is fitted with a card plate (30), and card posts that match the card plate groove (28) extend from the center of both sides of the card plate (30).

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