CN-224228485-U - Automatic door opening and closing mechanism and door box equipment

CN224228485UCN 224228485 UCN224228485 UCN 224228485UCN-224228485-U

Abstract

The present utility model relates to an automatic door opening and closing mechanism and door box apparatus. The automatic door opening and closing mechanism comprises a hinge spring system, a tensioning driving system and a tensioning driving system, wherein the hinge spring system comprises a hinge assembly, a linkage piece connected with the hinge assembly and a spring connected with the linkage piece, the tensioning driving system comprises a driving mechanism, a transmission arm connected with the driving mechanism in a driving mode and a tensioning wheel arranged on the transmission arm and used for tensioning the linkage piece, the transmission arm drives the tensioning wheel to move among a first position, a second position and a third position under the driving of the driving mechanism, when the tensioning wheel is in the second position, the linkage piece applies a pulling force moment balanced with the gravity moment to the door body assembly under the action of the spring, when the tensioning wheel is in the first position, the linkage piece applies a pulling force moment smaller than the gravity moment to the door body assembly to break the moment balance, and when the tensioning wheel is in the third position, the linkage piece applies a pulling force moment larger than the gravity moment to the door body assembly to break the moment balance.

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 (11)

1. Automatic door opening and closing mechanism for set up between box frame and door body subassembly, its characterized in that includes: A hinge spring system includes a hinge assembly for rotatably mounting the door assembly to the housing frame, a link member coupled to the hinge assembly, and a spring coupled to the link member for coupling to the housing frame, and The tensioning driving system comprises a driving mechanism, a transmission arm and a tensioning wheel, wherein the transmission arm is in driving connection with the driving mechanism, the tensioning wheel is arranged on the transmission arm and is used for tensioning the linkage piece, the transmission arm is driven by the driving mechanism to drive the tensioning wheel to move among a first position, a second position and a third position, and the tensioning driving system is used for adjusting the magnitude of a pulling force moment applied to the door body assembly by the linkage piece under the action of the spring; when the tensioning wheel is in the second position, the linkage piece applies a pulling force moment which is balanced with the gravity moment of the door body assembly to the door body assembly under the action of the spring, when the tensioning wheel is in the first position, the linkage piece applies a pulling force moment which is smaller than the gravity moment to the door body assembly under the action of the spring so as to break moment balance, and when the tensioning wheel is in the third position, the linkage piece applies a pulling force moment which is larger than the gravity moment to the door body assembly under the action of the spring so as to break moment balance.
2. 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 the linkage member is a pull rope with two ends respectively and limitedly connected with the hinge bracket and the spring.
3. The automatic door opening and closing mechanism according to claim 2, wherein the tension pulley further has a fourth position, and when the tension pulley moves from the third position to the fourth position, a pulling force moment applied to the door body assembly by the link member under the action of the spring further increases, and the first position, the second position, the third position, and the fourth position are sequentially arranged along a rotation direction of the transmission arm.
4. The automatic door opening and closing mechanism as claimed in claim 3, wherein the tension driving system further includes a plurality of position detecting switches provided in the first position, the second position, the third position, and the fourth position, respectively, and a fitting for triggering the position detecting switches, the fitting being provided on the transmission arm at a position corresponding to the tension pulley.
5. The automatic door opening and closing mechanism of claim 2, wherein the hinge spring system further comprises a guide roller for being mounted to the box frame, the guide roller being disposed adjacent to an axis of the spring, the pull cord bypassing the guide roller and the tension wheel one after the other from the spring to extend to the hinge bracket.
6. The automatic door opening and closing mechanism of claim 5, wherein the hinge spring system further comprises a fixed roller for being mounted to the box frame, the fixed roller being disposed adjacent the tension drive system, the pull cord bypassing the guide roller, the fixed roller, and the tension roller from the spring one after the other to extend to the hinge bracket.
7. The door opening and closing mechanism according to any one of claims 1 to 6, wherein the driving mechanism comprises a driving motor, a driving gear fixedly connected with an output shaft of the driving motor, and a driven gear meshed with the driving gear, one end of the transmission arm is fixedly connected with the driven gear, and the tensioning wheel is mounted at the other end of the transmission arm.
8. The automatic door opening and closing mechanism as claimed in claim 7, wherein the tension wheel is one wheel body disposed at an end of the driving arm far from the driven gear for single-side contact with the driving piece, or two wheel bodies disposed at an end of the driving arm far from the driven gear at intervals for double-side contact with the driving piece.
9. The door opening and closing mechanism according to any one of claims 1 to 5, wherein the driving mechanism is a driving motor, an output shaft of the driving motor is fixedly connected to one end of the driving arm, and the tensioning wheel is two wheels which are arranged at opposite ends of the driving arm and are used for contacting the driving piece on one side.
10. The automatic door opening and closing mechanism according to claim 6, wherein the driving mechanism is a driving motor, an output shaft of the driving motor is fixedly connected to a middle portion of the driving arm, and the tensioning wheel comprises two wheel bodies which are arranged at opposite ends of the driving arm and are used for contacting the driving piece bilaterally.
11. Door case apparatus, characterized by comprising: A box frame; Door body assembly, and An automatic door opening and closing mechanism as claimed in any one of claims 1 to 10, 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 problem that the existing push rod mechanism can only realize automatic door opening and closing in a small angle range and has poor user experience. 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 spring system includes a hinge assembly for rotatably mounting the door assembly to the housing frame, a link member coupled to the hinge assembly, and a spring coupled to the link member for coupling to the housing frame, and The tensioning driving system comprises a driving mechanism, a transmission arm and a tensioning wheel, wherein the transmission arm is in driving connection with the driving mechanism, the tensioning wheel is arranged on the transmission arm and is used for tensioning the linkage piece, the transmission arm is driven by the driving mechanism to drive the tensioning wheel to move among a first position, a second position and a third position, and the tensioning driving system is used for adjusting the magnitude of a pulling force moment applied to the door body assembly by the linkage piece under the action of the spring; when the tensioning wheel is in the second position, the linkage piece applies a pulling force moment which is balanced with the gravity moment of the door body assembly to the door body assembly under the action of the spring, when the tensioning wheel is in the first position, the linkage piece applies a pulling force moment which is smaller than the gravity moment to the door body assembly under the action of the spring so as to break moment balance, and when the tensioning wheel is in the third position, the linkage piece applies a pulling force moment which is larger than the gravity moment to the door body assembly under the action of the spring so as to break moment balance. 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, and the linkage piece is a pull rope with two ends respectively and limitedly connected with the hinge bracket and the spring. According to one embodiment of the application, the tensioning wheel further comprises a fourth position, when the tensioning wheel moves from the third position to the fourth position, the pulling force moment exerted on the door body assembly by the linkage piece under the action of the spring is further increased, and the first position, the second position, the third position and the fourth position are sequentially arranged along the rotation direction of the transmission arm. According to an embodiment of the present application, the tension driving system further includes a plurality of position detecting switches provided in the first position, the second position, the third position, and the fourth position, respectively, and a fitting for triggering the position detecting switches, the fitting being provided on the transmission arm at a portion corresponding to the tension pulley. According to one embodiment of the application, the hinge spring system further comprises a guide roller for being mounted to the box frame, the guide roller being arranged adjacent to the axis of the spring, the pull cord bypassing the guide roller and the ten