CN-224228488-U - Automatic door opening and closing mechanism and door box equipment

CN224228488UCN 224228488 UCN224228488 UCN 224228488UCN-224228488-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 assembly, a gravity balance assembly, a bypass driving system and a bypass driving system, wherein the gravity balance assembly comprises a pull rope connected with the hinge assembly or used for being connected with the door body assembly and an elastic piece connected with the box body frame, the elastic piece is connected with the pull rope and used for applying a pulling force moment opposite to the gravity moment direction of the door body assembly to the door body assembly, the bypass driving system comprises a driving motor and a force transmission assembly in driving connection with the driving motor, the force transmission assembly is located at the side of the gravity balance assembly and connected with a connecting point on the gravity balance assembly, and the force transmission assembly is driven by the driving motor to drive the connecting point to move and used for increasing or reducing the pulling force moment applied by the gravity balance assembly to the door body assembly so that the motion state of the door body assembly is changed.

Inventors

HE XIAOLEI
WANG SHIXING
ZHU KAIJIE
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: a hinge assembly connected between the door assembly and the case frame to enable the door assembly to rotate around the case frame to be opened or closed; The gravity balance assembly comprises a pull rope connected with the hinge assembly or used for being connected with the door body assembly and an elastic piece used for being connected with the box body frame, wherein the elastic piece is connected with the pull rope and used for applying a pulling force moment to the door body assembly, and the pulling force moment is opposite to the gravity moment direction of the door body assembly The bypass driving system comprises a driving motor and a force transmission assembly in driving connection with the driving motor, wherein the force transmission assembly is positioned at the side of the gravity balance assembly and connected with a connecting point on the gravity balance assembly, so that the connecting point is driven by the driving motor to move, and the force transmission assembly is used for increasing or reducing the tension moment applied to the door body assembly by the gravity balance assembly, so that the motion state of the door body assembly is changed.
2. The automatic door opening and closing mechanism according to claim 1, wherein the force transmission assembly is a linear transmission mechanism, the linear transmission mechanism comprises a screw rod connected with the driving motor and a nut sleeved on the screw rod, and the nut is limited and connected with the connecting point on the gravity balance assembly.
3. The door opening and closing mechanism as claimed in claim 2, wherein the coupling point is located at a connection portion between the elastic member and the pulling string, or the coupling point is located at a middle portion of the pulling string.
4. The automatic door opening and closing mechanism according to claim 2, wherein the elastic member is a tension spring, a fixed end of the tension spring is fixedly connected to the box frame, and a free end of the tension spring is connected to the pull rope and the nut.
5. The automatic door opening and closing mechanism as claimed in claim 4, wherein the screw is arranged in parallel with the tension spring.
6. The automatic door opening and closing mechanism as recited in claim 4, wherein said nut is rotatably connected to said free end of said tension spring.
7. The door opening and closing mechanism according to any one of claims 4 to 6, wherein the hinge assembly comprises a hinge base fixedly connected with the case frame, a hinge bracket fixedly connected with the door assembly, and a rotation shaft rotatably connecting the hinge bracket to the hinge base, and both ends of the pull rope are respectively and limitedly connected to the hinge bracket and the free ends of the tension spring.
8. The automatic door opening and closing mechanism as recited in claim 7, wherein the gravity balancing assembly further comprises a pulley assembly for being mounted to the case frame, the pulley assembly being disposed between the free end of the tension spring and the hinge bracket, the pull cord bypassing the pulley assembly such that a pulling force applied to the tension spring by the pull cord always coincides with an axial direction of the tension spring.
9. The automatic door opening and closing mechanism according to any one of claims 1 to 6, further comprising a door lock seal system including a door lock assembly for releasably locking the door body assembly to the box frame and a door seal assembly for closing a gap between the box frame and the door body assembly, the door lock assembly having a first state and a second state, and a door lock force when the door lock assembly is in the first state being greater than a door lock force when the door lock assembly is in the second state.
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: a hinge assembly connected between the door assembly and the case frame to enable the door assembly to rotate around the case frame to be opened or closed; The gravity balance assembly comprises a pull rope used for being connected with the door body assembly or the hinge assembly and an elastic piece used for being connected with the box body frame, wherein the elastic piece is connected with the pull rope and used for applying a pulling force moment to the door body assembly, and the pulling force moment is opposite to the gravity moment direction of the door body assembly The bypass driving system comprises a driving motor and a force transmission assembly in driving connection with the driving motor, wherein the force transmission assembly is positioned at the side of the gravity balance assembly and connected with a connecting point on the gravity balance assembly, so that the connecting point is driven by the driving motor to move, and the force transmission assembly is used for increasing or reducing the tension moment applied to the door body assembly by the gravity balance assembly, so that the motion state of the door body assembly is changed. According to one embodiment of the application, the force transmission assembly is a linear transmission mechanism, and the linear transmission mechanism comprises a screw rod connected with the driving motor and a nut sleeved on the screw rod, and the nut is limited and connected with the connecting point on the gravity balance assembly. According to one embodiment of the application, the attachment point is located at the connection between the elastic element and the pull cord, or at the middle of the pull cord. According to one embodiment of the application, the elastic member is a tension spring, a fixed end of the tension spring is fixedly connected to the box frame, and a free end of the tension spring is connected to the pull rope and the nut. According to one embodiment of the application, the screw is arranged parallel to the tension spring. According to one embodiment of the application, said nut is rotatably connected to said free end of said tension spring. 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 free ends of the tension springs. According to one embodiment of the application, the gravity balance assembly further comprises a pulley assembly for being mounted to the box frame, the pulley assembly being arranged between the free end of the tension spring and the hinge bracket, the pull rope bypassing the pulley assembly such that a pulling force applied by the pull rope to the tension spring always coincides with an axial direction of the tension spring. According to one embodiment of the application, the pulley assembly comprises an adj