Door opening and closing system with air curtain structure
By designing a door system with air curtain structure in the vending machine, the problems of inconvenient operation, pollution and safety hazards of the pick-up port are solved, and a more convenient, safe and clean pick-up process is achieved.
Patent Information
- Application Number
- CN202421822348.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The pick-up port design of existing vending machines has problems such as inconvenient operation, easy pollution and safety hazards, especially in outdoor environments, dust, garbage and small animals are prone to entering.
A switch door system with air curtain structure is designed, including a vending machine housing, infrared sensing device, a blower device and a video detection device. Through the coordination of the lift rack and the translation rack, the automatic switching of the pickup bin is realized, and a blowing device and a video detection device are used to prevent foreign objects from entering.
It improves the convenience and safety of pick-up operations, avoids the situation of being clipped by hands, eliminates the hidden dangers of personal injury, and effectively prevents the entry of flying insects and dust, keeps the food clean.
Smart Images
Figure CN222914249U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vending machine structures, in particular to a goods discharging and picking-up structure used in intelligent retail or vending machines; specifically, it relates to a door opening and closing system with an air curtain structure. Background Art
[0002] As a common commercial machine, vending equipment has been increasingly involved in people's daily lives. Vending machines can well save manpower during transactions and simplify the purchase process of some common food and daily necessities.
[0003] Generally, a picking-up opening for picking up goods is provided at the lower part of a vending machine. However, for vending machines installed outdoors, such as those in residential communities, it is easy for dust and garbage to be blown into the picking-up opening by the wind, resulting in pollution of the picking-up opening. In addition, small animals in the usage environment, such as flying insects, may also drill into the picking-up opening. To ensure the cleanliness of the vending machine, the picking-up opening is generally closed when not picking up goods.
[0004] Currently, common vending machines are provided with a baffle that can be turned inward or an electric rotating meal plate at the picking-up opening. When picking up goods, one hand needs to be used to push the baffle inward to take out the goods at the picking-up opening, which is inconvenient to operate. And when the baffle drops, the user must quickly withdraw the hand to dodge, which may pinch the user's hand and cause harm to the person.
[0005] In addition, there is another type of vending machine with a cabinet door opening and closing structure. The cabinet door can be opened or closed by the user. The cabinet door is hinged to the front side of the vending machine main body. When using this type of vending machine to pick up goods, due to the connection method between the vending machine main body and the cabinet door, the cabinet door needs to be opened at a large angle outward to take out the goods, resulting in very inconvenient operation. And when the cabinet door is lowered, it is also easy to pinch the user's arm, causing harm to the person and bringing potential safety hazards.
[0006] Therefore, there is an urgent need to develop and design a more efficient, convenient, clean and safe vending machine door opening and closing system to solve the above-mentioned defect problems existing in the existing vending machines. Summary of the Utility Model
[0007] In view of this, the purpose of the utility model is to design a door opening and closing system with an air curtain structure, so as to overcome the problem in the prior art that when using vending products, the baffle needs to be manually pushed inward or the cabinet door needs to be rotated outward to take out the goods, which makes the operation inconvenient and easily pinches the user's arm and causes safety hazards. When picking up the goods, it detects whether there is any foreign object entering, detects the environmental changes in the storage bin before and after the door is opened and closed, and adds an air curtain blowing function to prevent flying insects and dust from entering; the picking box moves more stably and quickly, which is convenient for users to pick up goods, and is not easy to pinch their hands, thereby improving the convenience of picking up operations, avoiding the situation where hands are pinched, eliminating the hidden danger of personal injury, and improving the safety of vending machine use.
[0008] The utility model provides a door opening and closing system with an air curtain structure, comprising: a vending machine housing, an infrared sensing device, a blowing device, and a video detection device; wherein lifting rails are installed on both sides of the interior of the vending machine housing, and a lifting frame is installed between the lifting rails on both sides, and the lifting frame can move vertically on the lifting rails, and a picking warehouse and a picking translation assembly are installed on the lifting frame, and the picking translation assembly can perform reciprocating translation movement along the delivery direction of the picking warehouse; a storage warehouse is fixedly arranged on the upper part of the interior of the vending machine housing;
[0009] The infrared sensing device is installed inside the pickup bin to prevent hands from being pinched; the blowing device is installed inside the storage bin, located on the inner wall opposite to the bin door of the storage bin, to generate a blowing airflow toward the outside of the bin door to prevent flying insects and dust from entering; the video detection device is installed on the inner top wall of the storage bin to monitor the entry of flying insects or foreign objects.
[0010] Furthermore, the lifting frame includes: a translation rack, a translation motor, a translation gear, a guide rod, and two U-shaped bearings; the translation rack is fixedly connected to the lifting track, the translation gear is meshingly connected to the translation rack, the translation motor is coaxially connected to the translation gear, the two U-shaped bearings are respectively arranged at the upper and lower ends of the lifting track, the guide rod is fixedly connected to the translation rack in parallel, and the guide rod is passed through the two U-shaped bearings.
[0011] Furthermore, the cargo picking translation assembly includes: a translation door of an upper channel and a translation door of a lifting channel. The translation door of the upper channel can move in a horizontal direction, and the translation door of the lifting channel can move in a vertical direction. The horizontal movement of the translation door of the upper channel can seal the lifting opening of the translation door of the lifting channel.
[0012] During the process of opening the pickup bin to pick up goods, the blowing device blows air outwards from the inside of the pickup bin to prevent flying insects and foreign objects. When the pickup action is completed, the sliding door of the upper channel opens, and the cup holder rises to the initial position along with the sliding door of the lifting channel, closes the pickup bin, and the video detection device identifies whether there are foreign objects inside the pickup bin. If foreign objects are found, they can be cleaned in time to avoid food contamination.
[0013] Preferably, a glass plate is provided on the outer wall of the pickup bin. The glass plate is of a transparent structure, and the inside of the pickup bin can be viewed through the glass plate.
[0014] Further, the blowing device adopts an air curtain structure, and the type of fan used in the air curtain structure is a cross-flow fan.
[0015] The biggest feature of the cross-flow fan is that the fluid flows through the fan impeller twice. The fluid flows in radially and then flows out radially. The intake and exhaust directions are in the same plane, and the discharged gas is evenly distributed along the width direction of the fan. The cross-flow fan has a simple structure, a small volume, a relatively high dynamic pressure coefficient, and a relatively long blowing distance.
[0016] Further, the pickup translation assembly is detachably connected with a cup holder or a pickup box. The lifting frame moves vertically on the lifting track, so that the cup holder or the pickup box moves to the pickup bin, and then the pickup bin is opened to pick up goods.
[0017] Further, the cross-section of the lifting track is a dovetail groove structure, and the cross-section of the translation rack is a dovetail tenon structure. The dovetail tenon structure is detachably embedded in the dovetail groove structure.
[0018] The dovetail tenon structure of the translation rack matches with the dovetail groove structure of the lifting track, which is convenient for installation and assembly, and also convenient for later disassembly and maintenance.
[0019] Further, the pickup translation assembly is provided with a boss or groove limiting structure, and the outer contour of the cup holder or the pickup box has a small clearance fit with the boss or groove limiting structure.
[0020] The boss or groove limiting structure with a small clearance fit can make the positioning of the goods neither too tight nor too loose. Being too tight is inconvenient for taking, and being too loose may cause displacement during translation, which is likely to cause splashing for liquid goods. The boss or groove limiting structure with a small clearance fit can facilitate the user to take the goods.
[0021] Further, the translation motor adopts any one of a servo motor and a stepper motor.
[0022] The servo motor can accurately control the speed and position accuracy. The servo motor has characteristics such as a small electromechanical time constant and high linearity, and can convert the received electrical signal into an angular displacement or angular velocity output on the motor shaft.
[0023] The stepper motor converts electrical pulse signals into corresponding angular displacements or linear displacements. For each input pulse signal, the rotor rotates by an angle or moves forward by one step. The output angular displacement or linear displacement is proportional to the number of input pulses, and the rotational speed is proportional to the pulse frequency. The stepper motor can precisely control the position and speed of the motor by controlling the number and frequency of current pulses. After receiving the pulse signal, the stepper motor can rotate rapidly, and its response speed is very fast. The stepper motor will not have cumulative errors during operation and can meet the operating requirements of many precision machines.
[0024] Furthermore, the translation rack and the translation gear adopt helical gears.
[0025] The meshing of helical gears progresses gradually to the entire tooth surface, making the transmission more stable, with less impact and vibration, thereby reducing noise. Helical gears have engaging teeth, mating teeth, and disengaging teeth at the same time, without force transmission interruption and impact. Multiple teeth are engaged linearly simultaneously, with less stress and less wear. Therefore, they can transmit a larger torque than spur gears. Helical gears are more conducive to smooth movement. Helical gears can compensate for the errors of each thin gear, enabling the gears to achieve smooth operation with an error within 1 mm under load. At any instant, approximately half of the time, two teeth of helical gears will be engaged. Therefore, the stress is at 1.5 times the tooth width, rather than on the basis of one tooth width. Therefore, helical gears have greater strength.
[0026] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0027] The switch door system with an air curtain structure provided by the present utility model has a simple and reasonable structure and strong integrity. It can detect whether foreign objects enter during goods picking. If foreign objects are found, they can be cleaned in time to avoid food contamination. It detects the environmental changes in the storage bin before and after the door is opened and closed, adds an air curtain blowing structure, and effectively prevents flying insects and dust from entering. The picking box moves more stably and quickly, improving the convenience of the picking operation. At the same time, it avoids the situation of being pinched by the hand, eliminates potential personal injury hazards, and effectively improves the use convenience and safety of the vending machine. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model.
[0029] In the drawings:
[0030] Figure 1 is the overall structural schematic diagram of the switch door system with an air curtain structure according to the embodiment of the present utility model.
[0031] The reference signs in the drawings are as follows:
[0032] 1. Vending machine housing; 2. Cup holder; 3. Glass plate; 4. Blowing device; 6. Lifting frame; 10. Translation rack; 11. Translation motor; 12. Translation gear. Detailed implementation manners
[0033] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.
[0034] The terms used in the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms "a", "the", and "said" used in the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0035] It should be understood that although the terms first, second, and third may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".
[0036] An embodiment of the present utility model provides a switch door system with an air curtain structure. Refer to Figure 1 As shown in the figure, it includes: a vending machine housing 1, an infrared sensing device, a blowing device 4, and a video detection device; wherein, lifting rails are installed on both sides inside the vending machine housing 1, a lifting frame 6 is installed between the lifting rails on both sides, and the lifting frame 6 can move vertically on the lifting rails. A picking bin and a picking translation assembly are installed on the lifting frame 6, and the picking translation assembly can make a reciprocating translation movement along the shipping direction of the picking bin; a storage bin is fixedly arranged above the inside of the vending machine housing 1.
[0037] The infrared sensing device is installed inside the pickup bin to prevent hands from being pinched; the blowing device is installed inside the storage bin, located on the inner wall opposite to the bin door of the storage bin, to generate a blowing airflow toward the outside of the bin door to prevent flying insects and dust from entering; the video detection device is installed on the inner top wall of the storage bin to monitor the entry of flying insects or foreign objects.
[0038] The lifting frame 6 includes: a translation rack 10, a translation motor 11, a translation gear 12, a guide rod, and two U-shaped bearings; the translation rack 10 is fixedly connected to the lifting track, the translation gear 12 is meshingly connected to the translation rack 10, the translation motor 11 is coaxially connected to the translation gear 12, the two U-shaped bearings are respectively arranged at the upper and lower ends of the lifting track, the guide rod is fixedly connected to the translation rack 10 in parallel, and the guide rod is passed through the two U-shaped bearings.
[0039] In this embodiment, the translation motor 11 adopts a servo motor. The servo motor can accurately control the speed and position accuracy. The servo motor has the characteristics of small electromechanical time constant and high linearity, and can convert the received electrical signal into angular displacement or angular velocity output on the motor shaft.
[0040] The cargo picking translation assembly includes: a translation door of an upper channel and a translation door of a lifting channel. The translation door of the upper channel can move in the horizontal direction, and the translation door of the lifting channel can move in the vertical direction. The horizontal movement of the translation door of the upper channel can seal the lifting opening of the translation door of the lifting channel.
[0041] When the pickup bin is opened for picking up goods, the blowing device blows air from inside the pickup bin to the outside to prevent flying insects and foreign objects. When the picking up action is completed, the sliding door of the upper channel is opened, and the cup holder 2 rises to the initial position along with the sliding door of the lifting channel, and the pickup bin is closed. The video detection device identifies whether there are foreign objects inside the pickup bin. If foreign objects are found, they can be cleaned up in time to avoid contamination of food. The outer wall of the pickup bin is provided with a transparent glass plate 3, through which the internal situation of the pickup bin can be viewed.
[0042] The pickup translation assembly is detachably connected to the cup holder 2 or the pickup box, and the lifting frame 6 moves vertically on the lifting track, so that the cup holder 2 or the pickup box moves to the pickup bin, and then the pickup bin is opened to pick up the goods.
[0043] The blowing device 4 adopts an air curtain structure, and the type of fan used in the air curtain structure is a cross-flow fan. The cross-flow fan has a simple structure, a small volume, a relatively high dynamic pressure coefficient, and a relatively long blowing distance. The fluid of the cross-flow fan flows through the fan impeller twice. The fluid flows in radially and then flows out radially. The intake and exhaust directions are in the same plane, and the discharged gas is evenly distributed in the width direction of the fan.
[0044] The cross-section of the lifting track is a dovetail groove structure, and the cross-section of the translation rack 10 is a dovetail tenon structure. The dovetail tenon structure is detachably embedded in the dovetail groove structure. The dovetail tenon structure of the translation rack 10 is matched with the dovetail groove structure of the lifting track, which is convenient for installation and assembly and also convenient for later disassembly and maintenance.
[0045] The pick-up translation assembly is provided with a boss or groove limiting structure, and the outer contour of the cup holder 2 or the pick-up box has a small clearance fit with the boss or groove limiting structure. The boss or groove limiting structure with a small clearance fit can make the positioning of the goods neither too tight nor too loose. If it is too tight, it is not convenient to pick up; if it is too loose, the goods may shift during translation, which is likely to cause spillage of liquid goods. The boss or groove limiting structure with a small clearance fit can facilitate the user to pick up the goods.
[0046] The switch door system with an air curtain structure provided by the embodiment of the present invention has a simple and reasonable structure, strong integrity, can detect whether there are foreign objects entering during pick-up, and can clean them in time if foreign objects are found, avoiding food contamination; it detects the environmental changes in the storage bin before and after the switch door, adds an air curtain blowing structure, and effectively prevents flying insects and dust from entering; the pick-up box moves more stably and quickly, improving the convenience of pick-up operation; at the same time, it avoids the situation of being pinched by the hand, eliminates the hidden danger of personal injury, and effectively improves the use convenience and safety of the vending machine.
[0047] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
[0048] The above are only the preferred embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent substitution, and improvement made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A door opening and closing system with an air curtain structure, characterized in that: include: Vending machine housing, infrared sensing device, blowing device, video detection device; wherein, lifting rails are installed on both sides of the interior of the vending machine housing, and a lifting frame is installed between the lifting rails on both sides, and the lifting frame can move vertically on the lifting rails, and a picking warehouse and a picking translation component are installed on the lifting frame, and the picking translation component can perform reciprocating translation movement along the delivery direction of the picking warehouse; a storage warehouse is fixedly arranged on the upper part of the interior of the vending machine housing; The infrared sensing device is installed inside the pickup bin; the blowing device is installed inside the storage bin, located on the inner wall opposite to the bin door of the storage bin; the video detection device is installed on the inner top wall of the storage bin.
2. The door opening and closing system with air curtain structure according to claim 1, characterized in that: The lifting frame includes: a translation rack, a translation motor, a translation gear, a guide rod, and two U-shaped bearings; the translation rack is fixedly connected to the lifting track, the translation gear is meshingly connected to the translation rack, the translation motor is coaxially connected to the translation gear, the two U-shaped bearings are respectively arranged at the upper and lower ends of the lifting track, the guide rod is fixedly connected to the translation rack in parallel, and the guide rod is passed through the two U-shaped bearings.
3. The door opening and closing system with air curtain structure according to claim 1, characterized in that: The cargo picking translation assembly includes: a translation door of an upper channel and a translation door of a lifting channel. The translation door of the upper channel can move in the horizontal direction, and the translation door of the lifting channel can move in the vertical direction. The horizontal movement of the translation door of the upper channel can seal the lifting opening of the translation door of the lifting channel.
4. The door opening and closing system with air curtain structure according to claim 1, characterized in that: The blowing device adopts an air curtain structure, and the fan type used in the air curtain structure is a cross-flow fan.
5. The door opening and closing system with air curtain structure according to claim 1, characterized in that: The pickup translation assembly can be detachably connected to a cup holder or a pickup box.
6. The door opening and closing system with air curtain structure according to claim 2, characterized in that: The cross section of the lifting track is a dovetail groove structure, the cross section of the translation rack is a dovetail tenon structure, and the dovetail tenon structure is detachably embedded in the dovetail groove structure.
7. The door opening and closing system with air curtain structure according to claim 5, characterized in that: The pickup translation assembly is provided with a boss or groove limiting structure, and the outer contour of the cup holder or the pickup box is matched with the boss or groove limiting structure with a small gap.
8. The door opening and closing system with air curtain structure according to claim 2, characterized in that: The translation motor is any one of a servo motor and a stepping motor.
9. The door opening and closing system with air curtain structure according to claim 2, characterized in that: The translation rack and the translation gear are helical gears.