Stackable drawer assembly

Abstract

The utility model provides a laminated drawer group relates to storage and operating platform equipment field, including composite drum wheel, composite drum wheel, including small diameter drum wheel, coaxial setting on small diameter drum wheel on medium diameter drum wheel, coaxial setting on medium diameter drum wheel on large diameter drum wheel and transmission in small diameter drum wheel, medium diameter drum wheel and large diameter drum wheel on closed loop cable, be provided with guide pulley, one -way hook and automatic tensioner on closed loop cable, the quantity of closed loop cable, guide pulley, one -way hook and automatic tensioner is three, three one -way hook's lower end is provided with vertical storage frame A, vertical storage frame B and vertical storage frame C respectively, the utility model discloses through single drive can complete the synchronous unfolding and retraction of multiple vertical storage frame, and composite drum wheel and closed loop cable simple structure, convenient maintenance, low in cost, through composite drum wheel differential transmission structure and single -wire closed loop cable sequence coupling mechanism, realize according to proportion drive multiple storage frame simultaneously unfolding or retraction.

Description

Technical Field

[0001] This utility model belongs to the field of storage and operating table equipment, specifically a stackable drawer assembly. Background Technology

[0002] In hospital pharmacy rooms, laboratories, and industrial assembly lines, it is often necessary to unfold multiple storage racks, drawers, or material crates simultaneously to facilitate batch retrieval and placement of items. Existing technologies mainly rely on individual drives, which are inefficient. Vertical storage racks are mostly driven individually or manually pulled out, requiring operation one by one during unfolding, which is inefficient and prone to errors. Synchronous unfolding mechanisms are complex, and common chain and rack linkage structures are costly, difficult to install, require frequent maintenance, and lack adequate safety protection. When existing structures encounter obstacles, the drive system is easily damaged, and risks such as pinching and collisions cannot be prevented in time. Space utilization is insufficient, and a single operable surface cannot be formed when fully unfolded vertically, affecting work efficiency.

[0003] In summary, this utility model provides a stackable drawer assembly to solve the above problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] Stackable drawer assembly, including composite drum rollers,

[0006] The composite drum includes a small-diameter drum, a medium-diameter drum coaxially mounted on the small-diameter drum, a large-diameter drum coaxially mounted on the medium-diameter drum, and a closed-loop cable driven by the small-diameter drum, the medium-diameter drum, and the large-diameter drum. The closed-loop cable is equipped with a guide wheel, a one-way hook, and an automatic tensioner. There are three of each of the closed-loop cable, guide wheel, one-way hook, and automatic tensioner. The lower ends of the three one-way hooks are respectively equipped with vertical storage racks A, B, and C.

[0007] Furthermore, in this utility model, the radial dimension formula of the composite drum wheel is D1:D2:D3=1:2:3, and the displacement ratio of the vertical storage rack A, vertical storage rack B and vertical storage rack C achieved by the closed-loop cable drive is a:2a:3a.

[0008] Furthermore, in this utility model, the one-way hook comprises a claw, a rotating shaft, and a return spring.

[0009] Furthermore, in this invention, the drive system of the composite drum is a stepper motor, and the drum rotation angle is monitored in real time by an encoder.

[0010] Furthermore, in this utility model, the closed-loop cable sequentially drives the vertical storage rack A, vertical storage rack B, and vertical storage rack C through a preset wiring and a one-way hook.

[0011] Furthermore, in this utility model, the one-way hook is a reversible one-way structure, which automatically engages during forward movement and is guided to disengage through an inclined groove during reverse movement.

[0012] Beneficial effects: This utility model has the following beneficial effects:

[0013] This invention enables the simultaneous deployment and retraction of multiple vertical storage racks with a single drive. The composite drum and closed-loop cable structure is simple, easy to maintain, and low in cost. Through the differential transmission structure of the composite drum and the sequential coupling mechanism of the single-line closed-loop cable, multiple storage racks can be driven to deploy or retract simultaneously in a ratio (a:2a:3a). It can be expanded into a synchronous deployment system with any number of layers and ratio. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the composite drum wheel in the closed state of this utility model;

[0017] Figure 4 This is a schematic diagram of the unfolded structure of the composite drum wheel of this utility model;

[0018] Figure 5 This is a schematic diagram of the closed-loop cable sequential coupling mechanism of this utility model.

[0019] In the picture:

[0020] 1. Composite drum; 101. Small diameter drum; 102. Medium diameter drum; 103. Large diameter drum; 2. Closed-loop cable; 3. Guide wheel; 4. One-way hook; 5. Automatic tensioner; 6. Vertical storage rack A; 7. Vertical storage rack B; 8. Vertical storage rack C. Detailed Implementation

[0021] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0022] Example 1

[0023] like Figure 1-5 As shown, this is the first embodiment of the present invention, which provides a stackable drawer assembly, including a composite drum 1.

[0024] The composite drum 1 includes a small-diameter drum 101, a medium-diameter drum 102 coaxially mounted on the small-diameter drum 101, a large-diameter drum 103 coaxially mounted on the medium-diameter drum 102, and a closed-loop cable 2 driven by the small-diameter drum 101, the medium-diameter drum 102, and the large-diameter drum 103. The closed-loop cable 2 is equipped with a guide wheel 3, a one-way hook 4, and an automatic tensioner 5. There are three of each of the closed-loop cable 2, the guide wheel 3, the one-way hook 4, and the automatic tensioner 5. The lower ends of the three one-way hooks 4 are respectively equipped with vertical storage racks A6, B7, and C8.

[0025] like Figure 1-5 As shown,

[0026] Vertical storage racks A6, B7, and C8 are connected to the three sections of the composite drum 1—small-diameter drum 101, medium-diameter drum 102, and large-diameter drum 1—by means of closed-loop cable 2. The diameter ratio of the small-diameter drum 101, medium-diameter drum 102, and large-diameter drum 103 is set to 1:2:3. This design allows the displacement ratio of the three storage racks to reach a:2a:3a, thereby meeting the precise control requirements under different storage needs.

[0027] The closed-loop cable 2's wiring path passes through several key components, including guide wheels 3, one-way hooks 4, and automatic tensioners 5. When the vertical storage rack A6 reaches its predetermined stroke, its one-way hook 4 automatically engages with the vertical storage rack B7, causing B7 to unfold. When B7 reaches its designated position, it engages with the vertical storage rack C8, forming a complete linkage process. During retraction, the one-way hook 4 automatically disengages via a sloping groove, completing the reverse separation operation and ensuring the efficient operation of the entire system.

[0028] Furthermore, the composite drum 1 and the automatic tensioner 5 work together to ensure that the closed-loop cable 2 maintains a constant tension during operation. The closed-loop cable 2 drives the storage racks of each layer to move sequentially through the preset wiring path and the action of the one-way hook 4. It is worth noting that the one-way hook 4 adopts a reversible one-way structure design, which can automatically complete the hooking action during forward movement, and release through the guide of the inclined groove during reverse movement. This design is also equipped with a spring release mechanism, which can trigger the automatic separation function under overload, thereby effectively avoiding structural damage caused by overload and improving the reliability and safety of the entire system.

[0029] Example 2

[0030] Reference Figure 2-5 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0031] In this embodiment, the radial dimension formula of the composite drum 1 is D1:D2:D3=1:2:3, and the closed-loop cable 2 drive realizes the displacement ratio of the vertical storage rack A6, vertical storage rack B7 and vertical storage rack C8 as a:2a:3a.

[0032] The drive system of the composite drum 1 is a stepper motor, and the drum rotation angle is monitored in real time by an encoder.

[0033] The closed-loop cable 2 drives the vertical storage racks A6, B7, and C8 in sequence through the pre-set wiring and the one-way hook 4.

[0034] The one-way hook 4 is a reversible one-way structure. It automatically engages during forward movement and is guided to disengage through a slant groove during reverse movement.

[0035] like Figure 2-5 As shown, the small-diameter drum 101, medium-diameter drum 102, and large-diameter drum 103 are coaxially arranged to achieve graded control of different transmission ratios. The drum diameter ratio is 1:2:3D1:D2:D3. Combined with the closed-loop cable 2 transmission, the displacement ratio of the vertical storage racks A, B, and C is precisely controlled as a:2a:3a, ensuring the synchronicity and differentiated motion of the stacked drawer group. The coaxial design reduces space occupation and improves the integration of the overall structure.

[0036] The closed-loop cable 2 changes its path through the guide wheel 3, so that the closed-loop cable 2 maintains a constant tension between the composite drum 1 and the storage rack, and the elongation of the closed-loop cable 2 is compensated by the automatic tensioner 5. The system drive end can also be a servo motor, and the drum rotation angle is monitored in real time by an encoder. The stepper motor or servo motor provides high-resolution position control to ensure the rotation accuracy of the composite drum 1. The encoder feeds back the drum rotation angle data to realize closed-loop control and correct motion deviation.

[0037] In use, vertical storage racks A6, B7, and C8 are connected to the three sections of the composite drum 1—the small-diameter drum 101, the medium-diameter drum 102, and the large-diameter drum 1—each via a closed-loop cable 2. The cable 2's routing path passes through guide wheels 3, one-way hooks 4, and an automatic tensioner 5. After vertical storage rack A6 reaches its predetermined travel distance, the one-way hook 4 on A6 automatically engages with vertical storage rack B7, causing B7 to unfold. Once B7 is in position, it hooks onto vertical storage rack C8. When retracted... The one-way hook 4 is automatically disengaged by the inclined groove, achieving reverse separation. The composite drum 1 and the automatic tensioner 5 work together to ensure the closed-loop cable 2 operates under constant tension. The closed-loop cable 2 drives each layer of storage racks in sequence through the preset wiring and the one-way hook 4. The one-way hook 4 is a reversible one-way structure. It automatically engages when moving in the forward direction and is disengaged by the inclined groove when moving in the reverse direction. Its spring release mechanism ensures automatic separation under overload conditions to avoid structural damage. It can drive multiple storage racks to unfold or retract simultaneously in proportion and can be expanded into a synchronous unfolding system with any number of layers and proportion.

[0038] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0039] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A stackable drawer assembly, characterized in that: Including composite drum (1), The composite drum (1) includes a small-diameter drum (101), a medium-diameter drum (102) coaxially mounted on the small-diameter drum (101), a large-diameter drum (103) coaxially mounted on the medium-diameter drum (102), and a closed-loop cable (2) driven by the small-diameter drum (101), the medium-diameter drum (102), and the large-diameter drum (103). The closed-loop cable (2) is provided with a guide wheel (3), a one-way hook (4), and an automatic tensioner (5). The number of the closed-loop cable (2), the guide wheel (3), the one-way hook (4), and the automatic tensioner (5) are all three. The lower ends of the three one-way hooks (4) are respectively provided with a vertical storage rack A (6), a vertical storage rack B (7), and a vertical storage rack C (8).

2. The stackable drawer assembly as described in claim 1, characterized in that: The radial dimension formula of the composite drum (1) is D1:D2:D3=1:2:3, and the displacement ratio of the vertical storage rack A (6), vertical storage rack B (7) and vertical storage rack C (8) is a:2a:3a through the closed-loop cable (2) transmission.

3. The stackable drawer assembly as described in claim 1, characterized in that: The one-way hook (4) consists of a claw, a pivot and a return spring.

4. The stackable drawer assembly as described in claim 1, characterized in that: The drive system of the composite drum (1) is a stepper motor, and the drum rotation angle is monitored in real time by an encoder.

5. The stackable drawer assembly as described in claim 1, characterized in that: The closed-loop cable (2) drives the vertical storage rack A (6), vertical storage rack B (7) and vertical storage rack C (8) in sequence through the preset wiring and one-way hook (4).

6. The stackable drawer assembly as described in claim 1, characterized in that: The one-way hook (4) is a reversible one-way structure. It automatically engages when moving in the forward direction and is guided to disengage through a slant groove when moving in the reverse direction.

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