CN-224228487-U - Automatic door opening and closing mechanism and door box equipment

CN224228487UCN 224228487 UCN224228487 UCN 224228487UCN-224228487-U

Abstract

The utility model relates to an automatic door opening and closing mechanism and door box equipment, which can realize full-angle automatic door opening and closing, improve user experience and improve safety performance. The automatic door opening and closing mechanism comprises a hinge spring system, a belt wheel driving system and a belt wheel driving system, wherein the hinge spring system comprises a hinge assembly, a pull rope and a spring, the hinge assembly is used for rotatably installing the door body assembly on the box body frame, the pull rope is used for being connected with the door body assembly, the spring is used for being connected with the box body frame, the spring is connected with the pull rope and used for applying a pulling force moment to the door body assembly through the pull rope, the pulling force moment is balanced with the gravity moment of the door body assembly, the belt wheel driving system comprises a driving motor, a driving gear, a driven gear, a driving belt and a fixedly connected piece, the driving belt and the pull rope are rotatably arranged on the box body frame, and the fixing piece is used for enabling the driving belt and the pull rope to be connected, and the pulling force moment applied to the door body assembly by the pull rope is increased or decreased, so that the moment balance state is broken.

Inventors

ZHU KAIJIE
WANG SHIXING
HE XIAOLEI
CEN QI

Assignees

宁波方太厨具有限公司

Dates

Publication Date: 20260512
Application Date: 20240430

Claims (10)

1. Automatic door opening and closing mechanism for set up between box frame and door body subassembly, its characterized in that includes: The hinge spring system comprises a hinge assembly, a pull rope and a spring, wherein the hinge assembly is used for rotatably mounting the door body assembly on the box body frame, the pull rope is used for being connected with the door body assembly, the spring is used for being connected with the box body frame, and the pull rope is used for applying a pulling force moment which is balanced with the gravity moment of the door body assembly to the door body assembly; The pulley driving system comprises a driving motor, a driving gear in driving connection with the driving motor, a driven gear rotatably arranged on the box body frame, a driving belt sleeved on the driving gear and the driven gear, and a fixedly connecting piece connecting the driving belt with the pull rope, wherein the fixedly connecting piece is used for increasing or reducing the pulling force moment applied by the pull rope to the door body assembly so as to break the moment balance state.
2. The automatic door opening and closing mechanism according to claim 1, wherein the transmission belt is a toothed belt meshed with the driving gear and the driven gear.
3. The automatic door opening and closing mechanism according to claim 1, wherein the hinge assembly comprises a hinge base fixedly connected with the box body frame, a hinge bracket fixedly connected with the door body assembly, and a rotating shaft rotatably connecting the hinge bracket with the hinge base, and two ends of the pull rope are respectively and limitedly connected with the hinge bracket and the spring.
4. The automatic door opening and closing mechanism of claim 3, wherein the hinge spring system further comprises a roller assembly for being mounted to the box frame, the roller assembly comprising an adjustment roller disposed adjacent an axis of the spring and a fixed roller disposed adjacent the hinge bracket, the pull cord sequentially bypassing the adjustment roller and the fixed roller from the spring to extend to the hinge bracket.
5. The automatic door opening and closing mechanism according to claim 4, wherein the driven gear is arranged coaxially with the fixed roller.
6. The door opening and closing mechanism as claimed in any one of claims 3 to 5, further comprising a lever assist system including a lever for mounting to the case frame, a return member connected to the lever, and a pushing block protruding from the transmission belt, the lever having a fulcrum portion for rotatably connecting to the case frame, a power portion extending from the fulcrum portion toward the pushing block, and a resistance portion extending from the fulcrum portion toward the hinge bracket, the power portion of the lever being away from the hinge bracket when the pushing block approaches the lever to lift the resistance portion under the driving of the transmission belt, the power portion of the lever being close to the hinge bracket under the return action of the return member to push the hinge bracket when the pushing block moves away from the lever to disengage from the resistance portion.
7. The automatic door opening and closing mechanism according to claim 6, wherein a power arm length of the power portion is greater than a resistance arm length of the resistance portion.
8. The automatic door opening and closing mechanism according to claim 6, wherein the pushing block and the fixing member are respectively located at upper and lower sections of the transmission belt.
9. The automatic door opening and closing mechanism according to claim 8, wherein the fixing member comprises a rope connection block fixedly connected with the pull rope, a belt connection block fixedly connected with the transmission belt and a limit bump convexly arranged on the belt connection block, the rope connection block is fixedly connected with the belt connection block, the belt wheel driving system further comprises a micro switch corresponding to the limit bump, and when door closing is completed, the limit bump triggers the micro switch under the drive of the transmission belt so as to stop the driving motor.
10. Door case apparatus, characterized by comprising: A box frame; Door body assembly, and The automatic door opening and closing mechanism according to any one of claims 1 to 9, which is provided between the cabinet frame and the door assembly.

Description

Automatic door opening and closing mechanism and door box equipment Technical Field The utility model relates to the technical field of household appliances, in particular to an automatic door opening and closing mechanism and door box equipment. Background Door box apparatuses such as built-in dishwashers are relatively commonly used household appliances, and automatic opening and closing of the door box apparatuses is generally achieved by sliding a door body through a push rod mechanism at the top of the loading apparatus. However, on one hand, the existing push rod mechanism has longer push rod extension after the push rod ejects out of the door body, which affects the appearance, and on the other hand, the existing push rod mechanism is limited by the push rod form, and can only realize automatic door opening and closing in a small angle range, the rest angle still needs to be manually completed by a user, and when the door is manually opened and closed, the user experience is poor because larger door locking force is often needed to be overcome. In addition, in the automatic door closing process, a push rod in the existing push rod mechanism is usually hard-connected with a door lock so as to pull a door body to close the door, and if the hand of a user is just located between the door body and the box body at the moment, the hand of the user is easy to be clamped, so that a great potential safety hazard exists. Disclosure of utility model Based on the above, it is necessary to solve the problems that the existing push rod mechanism can only realize automatic door opening and closing in a small angle range, the user experience is poor and potential safety hazards exist. In one embodiment of the present utility model, the present utility model provides an automatic door opening and closing mechanism for being disposed between a cabinet frame and a door assembly, comprising: The hinge spring system comprises a hinge assembly, a pull rope and a spring, wherein the hinge assembly is used for rotatably mounting the door body assembly on the box body frame, the pull rope is used for being connected with the door body assembly, the spring is used for being connected with the box body frame, and the pull rope is used for applying a pulling force moment which is balanced with the gravity moment of the door body assembly to the door body assembly; The pulley driving system comprises a driving motor, a driving gear in driving connection with the driving motor, a driven gear rotatably arranged on the box body frame, a driving belt sleeved on the driving gear and the driven gear, and a fixedly connecting piece connecting the driving belt with the pull rope, wherein the fixedly connecting piece is used for increasing or reducing the pulling force moment applied by the pull rope to the door body assembly so as to break the moment balance state. According to one embodiment of the application, the drive belt is a toothed belt that meshes with the driving gear and the driven gear. According to one embodiment of the application, the hinge assembly comprises a hinge base fixedly connected with the box body frame, a hinge bracket fixedly connected with the door body assembly and a rotating shaft rotatably connecting the hinge bracket with the hinge base, wherein two ends of the pull rope are respectively and limitedly connected with the hinge bracket and the spring. According to one embodiment of the application, the hinge spring system further comprises a roller assembly for being mounted to the box frame, the roller assembly comprising an adjustment roller disposed adjacent to the axis of the spring and a fixed roller disposed adjacent to the hinge bracket, the pull cord bypassing the adjustment roller and the fixed roller one after the other from the spring to extend to the hinge bracket. According to one embodiment of the application, the driven gear is arranged coaxially with the fixed roller. According to one embodiment of the application, the automatic door opening and closing mechanism further comprises a lever auxiliary system, wherein the lever auxiliary system comprises a lever, a reset piece and a pushing block, the lever is used for being mounted on the box body frame, the reset piece is connected with the lever, the pushing block is arranged on the transmission belt in a protruding mode, the lever is provided with a supporting point portion, a power portion and a resistance portion, the supporting point portion is used for being rotatably connected with the box body frame, the power portion extends from the supporting point portion towards the pushing block, the resistance portion extends from the supporting point portion towards the hinge support, when the pushing block is driven by the transmission belt to approach the lever to lift the resistance portion, the power portion of the lever is far away from the hinge support, and when the pushing block is driven by the transmission belt to be far away from the