Alternating door openers and door handles

Abstract

The present invention discloses an alternating cabinet door opening device, wherein a Z-axis motion mechanism drives a vertical column to produce a lifting action, a pin shaft and a roller shaft parallel to and spaced from the tail end of the vertical column extend, the pin shaft and the roller shaft successively open and close the cabinet door, since the pin shaft and the roller shaft are provided and there is a space between them, in the initial stage, the thin pin shaft first contacts the tongue piece, so as to achieve the purpose of slowly opening the cabinet door with a larger lever force, and as the opening angle of the cabinet door changes, when it is in the middle to the completion state, the required opening amplitude of the cabinet door increases accordingly, the required lever force becomes smaller but the required range of motion becomes larger, and the thick roller shaft far away from the pin shaft position replaces the pin shaft to open the cabinet door, so as to achieve the purpose of quickly opening the cabinet door with a smaller lever force, and this mechanical cabinet door opening method is cleverly suitable for the door opening principle based on "first gentle and large torque, then fast and small torque", and the door opening and closing process is very smooth, which is convenient for shortening the research and development cycle and saving electrical costs.

Description

Technical Field

[0001] The invention belongs to the field of vending equipment, and in particular relates to a transmission mechanism for opening and closing a cabinet door of a vending machine, and also relates to a handle structure for facilitating opening the cabinet door. Background Art

[0002] Self-service vending machines are mainly used in office buildings, stations, commercial centers and other places with large traffic flow to provide and sell goods by themselves. It not only provides a more convenient service for people to buy goods, but also replaces traditional manual sales, reduces the labor intensity of personnel, saves sales costs, and brings more profits to merchants.

[0003] At present, there are many automatic door opening devices for commodity vending equipment (freezers) used in the market, such as the use of a lock with a spring linkage structure. As long as the lock is released, the cabinet door will pop open under the action of the spring. There is a risk of accidental "pop-ups" when the door is opened with instant acceleration, and it needs to be reset manually or by another set of travel mechanisms when closing the door. It is impossible to achieve full automation. When the spring loses its elasticity, there are not only stability problems, but also high replacement and maintenance costs, and the debugging process is quite complicated and difficult. The technical problem of opening the cabinet door is mainly solved through the automatic opening mechanism. However, the structure of the door, especially the handle that can cooperate with the opening mechanism, also needs to be paid attention to. Otherwise, no matter how advanced the opening mechanism is, it cannot play its due performance. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an alternating cabinet door opening device and a cabinet door handle which can open and close cabinet doors smoothly, have appropriate torque and are conducive to simplifying circuit control procedures.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a cabinet door opening device, including a Z-axis motion mechanism, which drives the vertical column to produce a lifting action, and a pin shaft and a roller shaft parallel to and spaced from the tail end of the vertical column extend, and the pin shaft and the roller shaft successively open and close the cabinet door.

[0006] Furthermore, when the door is opened, the pin shaft contacts the refrigerator handle earlier than the roller shaft when the door opening mechanism moves upward from the bottom. When the door is opened upward to a certain position, the roller shaft contacts the handle and the pin shaft is separated from the refrigerator handle. Then the roller shaft drives the refrigerator handle to continue opening the door until it is fully opened.

[0007] Furthermore, when the cabinet door is opened, the pin shaft is close to the center of the Z-axis screw, which reduces the force arm of the door opening mechanism, and the roller shaft is far away from the center of the screw, which increases the moving space of the door opening handle.

[0008] Furthermore, the Z-axis motion mechanism is connected to the vertical column through a crossbeam, and a pin is installed on the vertical column; the vertical column is connected to the roller shaft through a longitudinal beam, and the relative position of the roller shaft and the pin shaft remains unchanged, and is used in combination with the refrigerator handle mechanism.

[0009] The present invention adopts another technical solution: a cabinet door handle, including a handle body, characterized in that a tongue piece for contacting a pin shaft extends from the side of the handle body.

[0010] Furthermore, the handle body is elliptical in shape.

[0011] Furthermore, when the cabinet door is closed, the roller moves into the elliptical cabinet door handle to drive the cabinet door to close, and the pin shaft does not need to participate in the door closing process.

[0012] In implementing the above technical scheme, since the pin shaft and the roller shaft are provided with a gap between them, in the initial stage, the small pin shaft contacts the tongue piece first, so as to achieve the purpose of slowly opening the cabinet door with a large lever force, and as the opening angle of the cabinet door changes, when it is in the middle to the completed state, the required opening amplitude of the cabinet door increases accordingly, and the required lever force becomes smaller but the required range of motion becomes larger. The thick roller shaft far away from the pin shaft position takes over the pin shaft to open the cabinet door, so as to achieve the purpose of quickly opening the cabinet door with a small lever force. This mechanical way of opening the cabinet door is cleverly suitable for the door opening principle based on "first light and large torque, then fast and small torque". The door opening and closing process is very smooth, and the spatial layout of the opening device and the cabinet door is compressed to make the internal structure of the vending machine more compact. There is no need to design complex circuit control programs, which is convenient for shortening the research and development cycle and saving electrical costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the alternating cabinet door opening device and the cabinet door handle.

[0014] Figure 2 Schematic diagram of the position relationship between the pin and the roller.

[0015] Figure 3 This is a schematic diagram of the cabinet door in its initial open state.

[0016] Figure 4 This is a schematic diagram of the cabinet door opening completion state. DETAILED DESCRIPTION

[0017] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] like Figure 1 As shown, the cabinet door opening device is mainly composed of a motor 3, a screw rod 2, a crossbeam 5, a vertical column 6, a pin shaft 7 and a roller shaft 9.

[0019] The shaft seat 1 is provided with a screw rod 2 and a motor 3, the motor 3 is drivingly connected to the screw rod 2, the screw rod 2 is threadedly connected to a nut block 4, and the nut block 4 moves along the shaft seat 1. The shaft seat 1, the screw rod 2, the nut block 4 and the motor 3 constitute a Z-axis (lifting) motion mechanism.

[0020] The nut block 4 is connected to the cross beam 5, and the cross beam 5 is hoisted with the vertical column 6. The tail end of the vertical column 6 extends the pin 7 and the longitudinal beam 8. The longitudinal beam 8 is installed with the roller 9, and the diameter of the roller 9 is three times that of the pin 7. The pin 7 and the longitudinal beam 8 form a 90-degree angle on the horizontal plane (XY direction), and the roller 9 and the pin 7 are parallel to each other. Relative to the handle, the pin 7 is located at the front corner and the roller 9 is located at the rear corner.

[0021] The handle body 10 is shaped like an ellipse, a long waist or a rectangle, and a tongue piece 11 is extended from the side of the handle body 10. The handle body 10 is installed at the right angle edge of the cabinet door surface, and when the nut block generates a lifting movement, the function of opening or closing the cabinet door is realized.

[0022] The pin diameter is 5mm, while the handle is 10cm long and 5cm wide. Since the cross-sectional area of ​​the pin is much smaller than that of the handle, it can ensure that the pin has a large adjustment margin when moving toward the inside of the handle, which brings great convenience to the later door opening and debugging operations, increases the fault tolerance range, and improves the stability of the equipment.

[0023] like Figure 2 As shown, the pin shaft 7 on the vertical plane is 1-3 cm higher than the roller shaft 9.

[0024] Combination Figure 3 and Figure 4 As shown, the working process of the cabinet door opening device is: when the door is in the initial stage, the pin shaft 7 is inserted into the tongue piece 11 to open the cabinet door 12; as the cabinet door opening angle gradually increases, when the door is in the middle to the completion state, the pin shaft 7 is replaced by the roller shaft 9, and the roller shaft 9 is inserted into the handle body 10 to open the cabinet door.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A cabinet door opening device, comprising a Z-axis motion mechanism, characterized in that: The Z-axis motion mechanism drives the vertical column to produce a lifting action, the nut block connects the crossbeam, the crossbeam hoists the vertical column, the tail end of the vertical column extends with a pin and a longitudinal beam, the longitudinal beam is installed with a roller, the diameter of the roller is three times that of the pin; the pin and the longitudinal beam form a 90-degree angle on the horizontal plane (XY direction), the roller and the pin are parallel to each other, the pin is located at the front corner relative to the handle and the roller is located at the rear corner, the pin and roller successively open and close the cabinet door.

2. The cabinet door opening device according to claim 1, characterized in that: When the door is opened, the door opening mechanism moves upward from the bottom and the pin shaft contacts the refrigerator handle earlier than the roller shaft. When the door is opened upward to a certain position, the roller shaft contacts the handle and the pin shaft is separated from the refrigerator handle. Then the roller shaft drives the refrigerator handle to continue opening the door until it is fully opened.

3. The cabinet door opening device according to claim 1, characterized in that: When the cabinet door is opened, the pin shaft is close to the center of the Z-axis screw, which reduces the force arm of the door opening mechanism, and the roller shaft is far away from the center of the screw, which increases the moving space of the door opening handle.

4. The cabinet door opening device according to claim 1, characterized in that: The Z-axis motion mechanism is connected to the vertical column through a crossbeam, and a pin is installed on the vertical column; the vertical column is connected to the roller shaft through a longitudinal beam, and the relative positions of the roller shaft and the pin shaft remain unchanged, and are used in conjunction with the refrigerator handle mechanism.

5. A cabinet door handle, comprising a handle body, characterized in that: Used in the cabinet door opening device according to any one of claims 1 to 4, the side of the handle body extends out to form a tongue piece for contacting the pin shaft.

6. The cabinet door handle according to claim 5, characterized in that: The handle body is in an elliptical shape.

7. The cabinet door handle according to claim 5, characterized in that: When the cabinet door is closed, the roller moves into the oval-shaped cabinet door handle to drive the cabinet door to close, and the pin shaft does not need to participate in the door closing process.

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