An automatic opening and closing drawer

Abstract

The application discloses an automatic opening and closing drawer, which comprises a frame and a motor, wherein the motor is used for providing power and is fixed on the back of the drawer through a connecting piece; a rack is arranged on the frame and is used for providing a moving path for the drawer; one end of the motor is provided with a gear, which is used for controlling the drawer to move along the rack; an induction assembly is arranged on the connecting piece and is used for detecting the opening and closing state of the drawer; the induction assembly further comprises a transmitter, a receiver and a blocker; the receiver and the transmitter are symmetrically arranged; the transmitter is used for emitting infrared signals; the receiver is used for receiving the infrared signals; the blocker is arranged on one side of the drawer; when the infrared signals emitted by the receiver and the transmitter reach the blocker, the blocker will block the infrared signals for a short time, the receiver cannot receive the infrared signals, and the motor stops working.

Description

Technical Field

[0001] This application relates to the field of cabinet technology, and in particular to an automatic drawer opening and closing mechanism. Background Technology

[0002] As an important storage device, drawers offer significant advantages such as high flexibility in space division, convenient and efficient access, and superior dust and dirt resistance. In medical environments, drawers can be scientifically partitioned and stored according to the categories and attributes of medicines and medical devices, effectively improving the efficiency of medical staff in retrieving and using supplies.

[0003] Currently, common drawers mainly consist of a cabinet body, drawer front panel, drawer slides, and handles. Drawer slides typically use a roller or sliding rail design, providing support and guidance for pushing and pulling the drawer. Handles are installed on the drawer front panel for users to manually pull the drawer. When in use, users apply external force by gripping the handle, causing the drawer to slide back and forth along the drawer slides to access items. This manual drawer-pulling operation is difficult to operate when the operator's hands are wearing gloves or are covered in debris, thus affecting operational efficiency.

[0004] In view of this, we provide a switchable drawer to solve the above problems. Utility Model Content

[0005] The purpose of this application is to solve the problem that it is difficult to manually open the drawer when the operator's hands are wearing gloves or are contaminated with debris, thus affecting the operating efficiency. In order to solve the above technical problem, an automatic drawer is provided that does not need to be manually opened when the operator's hands are wearing gloves or are contaminated with debris, thereby improving the operating efficiency.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solution: an automatic drawer includes a frame and a motor. The motor provides power and is fixed to the back of the drawer via a connector. A rack is provided on the frame to provide a moving path for the drawer. A gear is provided at one end of the motor to control the drawer to move along the rack. A sensing component is provided on the connector to detect the open / closed state of the drawer. The sensing component also includes a transmitter, a receiver, and a blocker. The receiver and transmitter are symmetrically arranged. The transmitter emits infrared signals, and the receiver receives infrared signals. The blocker is located on one side of the drawer. When the infrared signals emitted by the receiver and transmitter reach the blocker, the blocker blocks the infrared signals, preventing the receiver from receiving them and causing the motor to stop working.

[0007] Furthermore, according to an embodiment of this application, a slide rail is provided on the frame to keep the drawer sliding.

[0008] Furthermore, according to an embodiment of this application, a mounting hole is provided on the frame for mounting a rack.

[0009] Furthermore, according to an embodiment of this application, a fixing element is provided on the mounting hole, and the fixing element is used to fix the rack.

[0010] Furthermore, according to an embodiment of this application, a caster wheel is also provided on one side of the connector, and multiple caster wheels are provided to help the gear move along the rack.

[0011] Furthermore, according to an embodiment of this application, the connector is provided with a second mounting hole for mounting a caster wheel.

[0012] Furthermore, according to an embodiment of this application, the connector is provided with a plurality of fixing holes, which are used to fix the connector to the drawer.

[0013] Furthermore, according to an embodiment of this application, the drawer is provided with mounting hole three, which is used to install a slide rail.

[0014] Furthermore, according to an embodiment of this application, a fixing member 2 is provided on the mounting hole 3, and the connecting member is used to fix the slide rail to the drawer.

[0015] Furthermore, according to an embodiment of this application, the blocker is also provided with a stop block, which is used to prevent the drawer from being pulled out excessively.

[0016] Compared with existing technologies, this application uses a motor to start the drawer and transmits power to a gear at one end via a connecting component. The gear meshes with a rack on the frame, thereby driving the drawer to move along a preset path of the rack. During the drawer's movement, the sensing components on the fixing component continuously operate, with the transmitter emitting an infrared signal and receivers symmetrically positioned to receive the signal. When the drawer moves to the fully open / closed position, a stopper located on one side of the drawer moves between the transmitter and receiver, blocking the infrared signal. The receiver cannot receive the signal, and the motor receives a stop command and stops operating. The drawer then accurately stops at the fully open / closed position, completing one automatic opening and closing operation. This solves the problem of difficulty in manually opening the drawer when the operator's hands are wearing gloves or contaminated with debris, thus affecting operational efficiency. It achieves the better effect of improving operational efficiency by eliminating the need for manual opening when the operator's hands are wearing gloves or contaminated with debris. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the sensing component structure according to an embodiment of this application.

[0020] Figure 3 This is a three-dimensional structural diagram of the back side of an embodiment of this application.

[0021] In the attached diagram: 1. Frame, 2. Motor, 3. Connector, 4. Rack, 41. Gear, 5. Sensing component, 51. Transmitter, 52. Receiver, 53. Blocker, 6. Slide rail, 42. Mounting hole one, 43. Fixing component one, 7. Caster wheel, 31. Mounting hole two, 32. Fixing hole, 11. Mounting hole three, 12. Fixing component two, 531. Stop, 8. Electric lock, 81. Locking latch. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0026] Example 1:

[0027] like Figures 1 to 3 As shown, this embodiment provides an automatic drawer, including a frame 1 and a motor 2. The motor 2 provides power and is fixed to the back of the drawer via a connector 3. A rack 4 is provided on the frame 1 to provide a moving path for the drawer. A gear 41 is provided at one end of the motor 2 to control the drawer to move along the rack 4. A sensing component 5 is provided on the connector 3 to detect the open / closed state of the drawer. The sensing component 5 also includes a transmitter 51, a receiver 52, and an interruptor 53. The receiver 52 and the transmitter 51 are symmetrically arranged. The transmitter 51 emits infrared signals, and the receiver 52 receives infrared signals. The interruptor 53 is located on one side of the drawer. When the infrared signals emitted by the receiver 52 and the transmitter 51 reach the interruptor 53, the interruptor will briefly block the infrared signals, and the receiver 52 will not be able to receive the infrared signals, causing the motor 2 to stop working.

[0028] A slide rail 6 is installed on frame 1 to keep the drawer sliding. If the drawer shifts during movement due to the lack of guidance from the slide rail 6, the blocker 53 may not accurately block the infrared signal, causing the motor 2 to fail to stop in time, such as stopping before the drawer is fully open or closed. In scenarios requiring high operational precision, such as medical settings, this misjudgment could lead to the drawer not opening or closing properly, requiring manual adjustment by the operator, which contradicts the design principle of "no manual opening required." The slide rail 6, by constraining the movement trajectory, ensures that the sensing component 5 can reliably detect the positioning signal, avoiding efficiency losses caused by mechanical misalignment.

[0029] The frame 1 has a mounting hole 42 for mounting the rack 4. If the rack 4 is misaligned, it may cause lateral force to be generated during the operation of the gear 41, resulting in drawer shaking or jamming. When the operator is wearing gloves and cannot make fine adjustments, this deviation will directly cause the automatic switch to fail. The mounting hole 42 ensures the stability of the gear 41 transmission path by fixing the rack 4 in a precise position, thus guaranteeing the accuracy of automatic opening and closing even without manual calibration.

[0030] A fastener 43 is provided on the mounting hole to secure the rack 4. If the rack 4 is simply fixed through the mounting hole without additional fasteners, it may gradually loosen during high-frequency starting / stopping of the motor 2, leading to abnormal meshing between the gear 41 and the rack 4. When the operator is wearing gloves and cannot apply precise force to tighten the rack 4, the loose rack 4 will directly cause the automatic switch function to fail, and may even require removing the gloves for manual adjustment. The fasteners enhance the mechanical connection strength, ensuring that the rack 4 maintains reliable transmission even without human intervention.

[0031] One side of the connector 3 is also equipped with casters 7, multiple of which assist the gear 41 in moving along the rack 4. When the motor 2 drives the gear 41 to move along the rack 4, the rolling characteristics of the casters 7 reduce power loss, allowing the drawer to maintain smooth operation even under low load. For example, if an operator wearing thick gloves needs to manually assist in pushing the drawer, the low resistance of the casters 7 reduces the pushing and pulling force. However, if the automatic system is working normally, the casters 7 reduce the load on the motor 2, ensuring that power is prioritized for driving the drawer rather than overcoming friction, thereby improving the response speed and reliability of the automatic opening and closing mechanism.

[0032] The connector 3 has a second mounting hole 31 for mounting the caster wheel 7. If the caster wheel 7 is misaligned, it may cause uneven force distribution and misalignment during drawer movement, or even exacerbate abnormal wear on the gear 41 and rack 4. When operators are wearing gloves, manually adjusting the position of the caster wheel 7 has low precision. The standardized design of the second mounting hole 31 allows for direct positioning using molds or tooling, ensuring that the caster wheel 7 automatically aligns with the transmission path after installation, eliminating the need for manual recalibration. For example, in a medical emergency scenario, if the drawer jams due to misalignment of the caster wheel 7, gloved medical personnel may find it difficult to quickly correct the situation. The precise positioning of the second mounting hole 31 avoids this problem, ensuring that the emergency equipment drawer opens automatically and quickly.

[0033] The connector 3 has multiple fixing holes for securing the fastener to the drawer. If the fastener is connected via only a single fixing hole, long-term vibration may cause the fastener to loosen, leading to abnormal meshing of gear 41 and rack 4. When the operator is wearing gloves, the torque required to tighten the screws by hand is insufficient for effective fixing. Multiple fixing holes increase the number of connection points, distribute the force, and improve the overall tensile strength. Even without regular maintenance, the fastener and drawer can maintain a reliable connection, preventing the automatic opening and closing function from failing due to fastener displacement.

[0034] The drawer is equipped with mounting holes 3 and 11 for mounting the slide rail 6. Mounting holes 3 and 11 also have fasteners 2 and 3 for securing the slide rail 6 to the drawer. If the slide rail 6 is misaligned, the drawer may tilt during movement, causing abnormal meshing of the gear 41 and rack 4 or misalignment of the sensing component 5. Operators wearing gloves may find it difficult to precisely adjust the slide rail 6 position by hand. However, the standardized design of mounting holes 3 and 11 allows for direct positioning using tooling, ensuring that the slide rail 6 automatically aligns with the slide rail 6 groove in the frame 1 after installation, eliminating the need for manual recalibration. For example, in medical drug storage scenarios, if a drawer cannot close automatically due to slide rail 6 misalignment, a pharmacist wearing gloves must repeatedly push and pull to adjust it. The precise positioning of mounting holes 3 and 11 avoids this problem, ensuring an efficient and smooth drug storage and retrieval process.

[0035] The stopper 53 is also equipped with a stop 531, which is used to prevent the drawer from being pulled out excessively. As a physical barrier, the stop 531 directly contacts the frame 1 or cabinet when the drawer moves to the preset limit position, preventing the drawer from being pulled out further. This design, together with the "soft limit" of the sensing component 5, forms a double insurance, preventing the drawer from being pulled out excessively or even falling off due to the motor 2 not stopping in time because of a malfunction of the sensing component 5.

[0036] Example 2:

[0037] like Figures 1 to 3 As shown, this embodiment also includes an electronic lock 8 installed on the drawer. The electronic lock 8 is located inside the drawer and is used to receive and send switch commands. The electronic lock 8 installed on the drawer is located inside the drawer and is used to receive and send switch commands. Its function is directly related to the automatic opening and closing of the drawer: when the operator sends a switch command through an external device, the electronic lock 8 receives the command and synchronizes it to the motor 2 control module, triggering the motor 2 to drive the gear 41 rack 4 mechanism to realize the automatic opening and closing of the drawer; after the drawer is fully opened or closed, the electronic lock 8 can control the motor 2 to stop working and perform a corresponding locking action based on the signal fed back by the sensing component 5, ensuring the drawer is stably fixed, changing the drawer opening and closing from manual operation to signal-driven operation, and improving the convenience of operation.

[0038] A latch 81, an electromagnetic lock design, is installed on frame 1 to open or lock the drawer. The electromagnetic latch 81 on frame 1 achieves a dual function through linkage with the automatic opening and closing system: When automatically opening, the control system first sends a signal to unlock the electromagnetic latch 81, releasing the drawer from its locked state. Subsequently, the motor 2 drives the gear 41 and rack 4 mechanism to move the drawer. When the sensing component 5 detects that the drawer is fully open or closed and the motor 2 stops working, the electromagnetic latch 81 can automatically relock or remain unlocked as needed, ensuring stable position. Simultaneously, the electromagnetic latch 81, sensing component 5, and stop block 531 form a safety redundancy, preventing drawer malfunction due to sensing failure. It can also be integrated into the control system to achieve non-contact triggering, working in conjunction with the motor 2 to complete the automatic "unlock-open-lock" process, avoiding cumbersome manual operation and improving the safety, reliability, and operational efficiency of the automatic drawer opening and closing.

[0039] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. An automatically opening and closing drawer, comprising a frame and a motor, the motor being used to provide power, and the motor being fixed to the back of the drawer via a connector; Its features are, A rack is provided on the frame to provide a moving path for the drawer, and a gear is provided at one end of the motor to control the drawer to move along the rack. The connector is equipped with a sensing component for detecting the opening and closing state of the drawer. The sensing component also includes a transmitter, a receiver, and a blocker. The receiver and the transmitter are symmetrically arranged. The transmitter is used to emit infrared signals, and the receiver is used to receive the infrared signals. The blocker is located on one side of the drawer. When the infrared signals emitted by the receiver and the transmitter reach the blocker, the blocker will block the infrared signals. The receiver will not be able to receive the infrared signals, and the motor will stop working.

2. The automatic opening and closing drawer according to claim 1, characterized in that, The frame is equipped with slide rails, which are used to keep the drawer sliding.

3. An automatic drawer according to claim 1, characterized in that, The frame is provided with a mounting hole 1, which is used to install the rack.

4. An automatic drawer according to claim 3, characterized in that, A fixing component is provided on the mounting hole, and the fixing component is used to fix the rack.

5. An automatic drawer according to claim 1, characterized in that, One side of the connector is also provided with casters, and multiple casters are provided. The casters are used to help the gear move along the rack.

6. An automatically opening and closing drawer according to claim 5, characterized in that, The connector is provided with a second mounting hole, which is used to install the caster wheel.

7. An automatic drawer according to claim 4, characterized in that, The connector is provided with a plurality of fixing holes, which are used to fix the connector to the drawer.

8. An automatic drawer according to claim 2, characterized in that, The drawer is provided with mounting hole three, which is used to install the slide rail.

9. An automatically opening and closing drawer according to claim 8, characterized in that, The mounting hole three is provided with a fixing member two, and the connecting member is used to fix the slide rail to the drawer.

10. An automatically opening and closing drawer according to claim 1, characterized in that, The stopper is also equipped with a stop block, which is used to prevent the drawer from being pulled out excessively.

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