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CN-224228486-U - Automatic door opening and closing mechanism and door box equipment

CN224228486UCN 224228486 UCN224228486 UCN 224228486UCN-224228486-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 and a screw rod driving system. The gravity balance assembly comprises a pull rope, a spring and a sliding connecting piece, wherein the sliding connecting piece is respectively connected with the pull rope and the spring and is used for applying a pulling force moment opposite to the gravity moment direction of the door body assembly to the door body assembly through the pull rope under the action of the spring. The screw rod driving system comprises a driving motor and a screw rod in driving connection with the driving motor, the screw rod and the spring are coaxially arranged, and the screw rod is in threaded connection with the sliding connecting piece and used for linearly moving the sliding connecting piece under the driving of the driving motor so as to increase or reduce the pulling force moment applied to the door body assembly.

Inventors

  • HE XIAOLEI
  • WANG SHIXING
  • ZHU KAIJIE

Assignees

  • 宁波方太厨具有限公司

Dates

Publication Date
20260512
Application Date
20240430

Claims (10)

  1. 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 for connecting the door assembly and the case frame to enable the door assembly to be rotated with respect to the case frame to be opened or closed; The gravity balance assembly comprises a pull rope connected with the door body assembly, a spring connected with the box body frame and a sliding connecting piece slidably arranged on the box body frame, wherein the sliding connecting piece is respectively connected with the pull rope and the spring and is used for applying a pulling force moment to the door body assembly, which is opposite to the gravity moment of the door body assembly, to the door body assembly through the pull rope under the action of the spring, and The screw rod driving system comprises a driving motor and a screw rod in driving connection with the driving motor, wherein the screw rod is coaxially arranged with the spring, and is in threaded connection with the sliding connecting piece, and the screw rod driving system is used for linearly moving the sliding connecting piece under the driving of the driving motor so as to increase or reduce the pulling force moment applied to the door body assembly.
  2. 2. The automatic door opening and closing mechanism according to claim 1, wherein the sliding connection piece comprises a nut seat sleeved on the screw rod, a screw joint extending from the nut seat towards the spring in a protruding manner, and a hook part fixedly connected with the nut seat, the screw joint is screwed into one end of the spring, and one end of the pull rope is hung into the hook part.
  3. 3. The door opening and closing mechanism as recited in claim 2, wherein the sliding connection further comprises balls rollably protruding from the nut seat for abutting the housing frame.
  4. 4. The automatic door opening and closing mechanism as claimed in claim 3, wherein the nut seat has a screw hole matched with the screw rod, a mounting cavity accommodating the ball, and a notch on a side of the nut seat facing the box frame and communicating with the mounting cavity, a width of the notch is smaller than a diameter of the ball so that the ball portion accommodated in the mounting cavity protrudes out of the notch.
  5. 5. The door opening and closing mechanism according to claim 4, wherein the screw joint is integrally connected to the nut seat, and the hooking portion is detachably fastened to the nut seat.
  6. 6. The door opening and closing mechanism as claimed in claim 5, wherein the hooking portion includes a pressing plate screwed to the nut seat and a hooking arm extending from the pressing plate to be bent toward the nut seat, and the pressing plate seals the cavity of the installation cavity when the pressing plate is fixed to the nut seat, and the nut seat seals the hooking opening of the hooking arm.
  7. 7. The door opening and closing mechanism according to any one of claims 1 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 rotating shaft rotatably connecting the hinge bracket to the hinge base, both ends of the pull rope are respectively and limitedly connected with the hinge bracket and the sliding connecting piece, the spring is a tension spring, one end of the tension spring is fixedly connected with the sliding connecting piece, and the other end of the tension spring is used for being adjustably connected with the case frame.
  8. 8. The automatic door opening and closing mechanism of claim 7, wherein the gravity balance assembly further comprises a roller assembly for being mounted to the box frame, the roller assembly comprising a guide roller disposed adjacent the drive motor and a fixed roller disposed adjacent the hinge bracket, the pull cord sequentially bypassing the guide roller and the fixed roller from the sliding connection for connection to the hinge bracket.
  9. 9. The automatic door opening and closing mechanism of any one of claims 1 to 6, further comprising a door lock system for releasably locking the door body assembly to the housing frame, the door lock system having a first state and a second state, and a door lock force when the door lock system is in the first state being greater than a door lock force when the door lock system is in the second state.
  10. 10. Door case apparatus, characterized by comprising: A box frame; Door body assembly, and The automatic door opening and closing mechanism as claimed in any one of claims 1 to 9, wherein a hinge base and a hinge bracket in the automatic door opening and closing mechanism are fixedly connected to the case frame and the door assembly, respectively.

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 for connecting the door assembly and the case frame to enable the door assembly to be rotated with respect to the case frame to be opened or closed; The gravity balance assembly comprises a pull rope connected with the door body assembly, a spring connected with the box body frame and a sliding connecting piece slidably arranged on the box body frame, wherein the sliding connecting piece is respectively connected with the pull rope and the spring and is used for applying a pulling force moment to the door body assembly, which is opposite to the gravity moment of the door body assembly, to the door body assembly through the pull rope under the action of the spring, and The screw rod driving system comprises a driving motor and a screw rod in driving connection with the driving motor, wherein the screw rod is coaxially arranged with the spring, and is in threaded connection with the sliding connecting piece, and the screw rod driving system is used for linearly moving the sliding connecting piece under the driving of the driving motor so as to increase or reduce the pulling force moment applied to the door body assembly. According to one embodiment of the application, the sliding connecting piece comprises a nut seat sleeved on the screw rod, a screw joint extending from the nut seat towards the spring in a protruding mode, and a hook part fixedly connected with the nut seat, wherein the screw joint is screwed into one end of the spring, and one end of the pull rope is hung into the hook part. According to one embodiment of the application, the sliding connection further comprises balls rollably protruding from the nut seat for abutting against the box frame. According to one embodiment of the application, the nut seat has a threaded hole matching the screw, a mounting cavity for receiving the ball, and a notch on the nut seat facing the side of the box frame and communicating with the mounting cavity, the notch having a width smaller than the diameter of the ball so that the ball portion received within the mounting cavity protrudes out of the notch. According to one embodiment of the application, the screw joint is integrally connected with the nut seat, and the hook part is detachably fixedly connected with the nut seat. According to one embodiment of the application, the hook part comprises a pressing plate in threaded connection with the nut seat and a hooking arm extending from the pressing plate to the nut seat in a bending mode, when the pressing plate is fixed on the nut seat, the pressing plate seals the cavity opening of the mounting cavity, and the nut seat seals the hooking opening of the hooking arm. According to one embodiment of the application, the hinge assembly comprises a hinge base, a hinge bracket and a rotating shaft, wherein the hinge base is fixedly connected with the box body frame, the hinge bracket is fixedly connected with the door body assembly, the rotating shaft is used for rotatably connecting the hinge bracket with the hinge base, two ends of a pull rope are respectively and limitedly