A buffer hinge for a downward-flipping door

Abstract

The present invention relates to a downward flip door buffer hinge, which solves the problem that the existing door panel suspension mechanism has low working efficiency and is inconvenient to use. It includes a hinge body fixing plate and a door panel mounting plate installed vertically. The buffer hinge also includes a buffer device arranged between the door panel mounting plate and the hinge body fixing plate. The buffer device includes a hinge linkage connecting member connecting the door panel mounting plate and the hinge body fixing plate, and a damping mechanism for pulling the hinge linkage connecting member to make the door panel open and close and suspend. The chain body fixing plate is provided with a guide slideway for controlling the door panel to open and close and suspend. The hinge linkage connecting member of the downward flip door buffer hinge of the present invention drives the door panel to automatically close in the closing slideway of the guide slideway, and can suspend in the suspending slideway. The automatic closing angle and the door panel suspending opening angle can be set as needed. In the opening slideway, the door panel automatically opens to the maximum under the action of its own gravity, so that it is convenient to use and has high working efficiency.

Description

Technical Field

[0001] The invention relates to a buffer hinge for a downward-flipping door. Background Art

[0002] The door panels of current household appliances are opened and closed by manual suspension or damping shaft suspension. The manual suspension method requires the user to open the door cover manually, and to keep the door cover open, the user needs to hold the door cover with his hand all the time. Closing the door cover also requires the user to close it manually, while the damping shaft suspension method also requires manual closing when closing, which is inefficient and the user experience is not good. Summary of the invention

[0003] The purpose of the invention is to solve the problem that the existing door panel suspension mechanism has low working efficiency and is inconvenient to use.

[0004] The technical solution adopted to solve the technical problem proposed by the present invention is as follows: the down-flip door buffer hinge of the present invention includes a hinge main body fixing plate installed vertically, and a door panel mounting plate hinged to the hinge main body fixing plate for flipping up and down. The buffer hinge also includes a buffer device arranged between the door panel mounting plate and the hinge main body fixing plate. The buffer device includes a hinge linkage connecting piece connecting the door panel mounting plate and the hinge main body fixing plate, and a damping mechanism for pulling the hinge linkage connecting piece to slide on the hinge main body fixing plate to make the door panel open and close and suspend. The bottom end of the hinge linkage connecting piece is hinged to the door panel mounting plate, and the top end is connected to the damping mechanism. The hinge main body fixing plate is provided with a guide slide for controlling the opening and closing and suspension of the door panel. The middle part of the hinge linkage connecting piece is connected to the hinge main body fixing plate. The hinge linkage connecting piece is connected with the guide slide in a rolling manner through the first roller, the hinge linkage connecting piece is fixedly connected with the first roller shaft, the first roller is arranged in a rolling manner in the guide slide, and the two sides of the hinge linkage connecting piece are connected with the hinge body fixing plate in a rolling manner through two second rollers respectively, a damping slope obliquely downward is convexly provided on the hinge body fixing plate corresponding to the upper part of the guide slide, the hinge linkage connecting piece is connected with the damping slope through a damping piece, the guide slide includes an arc-shaped hovering slide for causing the door panel to suspend, a closing slide connected with the upper part of the arc-shaped hovering slide for automatically closing the door panel, and an opening slide connected with the lower part of the arc-shaped hovering slide downward for automatically falling and opening the door panel, the closing slide is bent in the closing direction of the door panel, and the closing slide and the opening slide are narrower than the hovering slide.

[0005] The technical solutions for further limiting the present invention include:

[0006] The damping mechanism is a tension spring, one end of which is fixedly connected to the hinge body fixing plate, and the other end of which is connected to the top end of the hinge linkage connecting piece.

[0007] The hinge linkage connecting piece is provided with a limiting groove for opening the door panel to a maximum angle, and the hinge main body fixing plate is provided with a limiting column matched with the limiting groove.

[0008] The hinge linkage connecting piece is provided with a positioning bending convex surface for closing the door panel, and the hinge main body fixing plate is provided with a positioning groove matched with the positioning bending convex surface.

[0009] One end of the positioning bent convex surface of the hinge linkage connecting piece is hinged to the door panel mounting plate through the hinge linkage connecting piece hinge shaft, the hinge linkage connecting piece hinge shaft is located in the positioning groove, the door panel mounting plate is provided with a bent U-shaped groove, and the hinge linkage connecting piece and the hinge body fixing plate are both located in the U-shaped groove.

[0010] Bending side baffles are provided on both sides of the hinge main body fixing plate, the two second rollers are respectively connected to a side baffle roller, and the two second rollers are respectively installed on both sides of the hinge linkage connecting member.

[0011] The damping member is a damping rubber block, which is convexly arranged on the hinge linkage connecting member.

[0012] When the door panel is opened to the maximum angle, the angle between the door panel and the vertical direction is between 80 and 90 degrees.

[0013] When the door panel is closed, the angle between the door panel and the vertical direction is between -2 degrees and 0 degrees.

[0014] Through the above technical scheme, the beneficial effects of the present invention are as follows: the hinge linkage connecting part of the down-flip door buffer hinge of the present invention drives the door panel to automatically close in the closing slide, and can hover in the hovering slide. The automatic closing angle and the door panel hovering opening angle can be set as needed. In the opening slide, the door panel automatically opens to the maximum under the action of its own gravity, so it is easy to use and has high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic structural diagram of a downward flip door buffer hinge in a closed state.

[0016] Figure 2 The figure is a schematic diagram of the exploded structure of a buffer hinge for a downward-flipping door according to the present invention.

[0017] Figure 3 The present invention is a schematic structural diagram of a downward flip door buffer hinge in a suspended state.

[0018] Figure 4 The present invention is a schematic structural diagram of a downward-flipping door buffer hinge in a fully-opened state.

[0019] Figure 5It is a schematic diagram of the three-dimensional structure of a hinge body fixing plate of a downward flip door buffer hinge according to the present invention. DETAILED DESCRIPTION

[0020] The structure of the present invention is further described below in conjunction with the accompanying drawings.

[0021] Reference Figures 1 to 5A down-flip door buffer hinge includes a hinge body fixing plate 1 installed vertically, a door panel mounting plate 2 which is hinged to the hinge body fixing plate in an up-and-down manner, the buffer hinge also includes a buffer device arranged between the door panel mounting plate and the hinge body fixing plate, the buffer device includes a hinge linkage connecting member 3 connecting the door panel mounting plate and the hinge body fixing plate, and a damping mechanism 4 for pulling the hinge linkage connecting member to slide on the hinge body fixing plate to make the door panel open and close and suspend. The bottom end of the hinge linkage connecting member is hinged to the door panel mounting plate, and the top end is connected to the damping mechanism. A guide slide 5 for controlling the opening and closing and suspension of the door panel is provided on the hinge body fixing plate. The middle part of the hinge linkage connecting member is rollingly connected to the guide slide through a first roller 6. The hinge linkage connecting member The member is fixedly connected to the first roller shaft, the first roller is rotatably arranged in the guide slide, the two sides of the hinge linkage connecting member are respectively connected to the hinge body fixing plate by two second rollers 7 for rolling, the hinge body fixing plate 1 is provided with a downwardly inclined damping slope 11 above the corresponding guide slide, the hinge linkage connecting member is connected to the damping slope through the damping member 8, the guide slide 5 includes an arc-shaped hovering slide 51 for suspending the door panel, a closing slide 52 connected to the upper side of the arc-shaped hovering slide and bent in the door closing direction for automatically closing the door panel, and an opening slide 53 connected to the lower side of the arc-shaped hovering slide and downward for automatically falling and opening the door panel, the closing slide is bent in the door panel closing direction, and the closing slide and the opening slide are narrower than the hovering slide. The starting end of the automatic closing slide is the door panel locking position, the connection between the hovering slide and the automatic closing slide is the first hovering position, the end of the hovering slide is the starting position of the door panel automatically opening, and the door panel automatically opens to the maximum position in the opening slide. In the closing slide, the combined force of the spring pulling force on the hinge linkage connection member, the friction force of the damping member on the hinge linkage connection member, and the friction force of the closing slide on the first roller is greater than the pulling force of the door panel on the hinge linkage connection member, so that the door panel automatically closes in the closing slide; the closing slide bends in the closing direction of the door panel, so that the door panel can be closed tightly when closed. In the hovering slide, because the closing slide is narrower than the hovering slide, the friction force of the hovering slide on the first roller is reduced, and the damping slope is inclined downward, so in the hovering slide, the friction force of the damping member on the hinge linkage connection member is reduced, so that the combined force of the spring pulling the hinge linkage connection member in the hovering slide, the friction force of the damping member on the hinge linkage connection member, and the friction force of the closing slide on the first roller is equal to the pulling force of the door panel on the hinge linkage connection member, so that the door panel remains suspended in the hovering slide. In the opening slide, the opening slide is downward, and the combined force of the spring pulling the hinge linkage connection member, the friction force of the damping member on the hinge linkage connection member, and the friction force of the closing slide on the first roller is less than the pulling force of the door panel on the hinge linkage connection member, and the opening slide is narrower than the hovering slide downward, so that the friction force of the opening slide on the first roller is increased, so that the door panel can fall slowly.

[0022] In this embodiment, the damping mechanism is a tension spring, one end of which is fixedly connected to the hinge body fixing plate, and the other end of which is connected to the top end of the hinge linkage connector.

[0023] In this embodiment, the hinge linkage connector 3 is provided with a limit groove 31 for the door panel to be opened to the maximum angle, and the hinge body fixing plate 1 is provided with a limit column 12 that cooperates with the limit groove. When the door panel is fully opened, the limit column enters the limit groove to position the door panel. When the door panel is opened to the maximum angle, the angle between the door panel and the vertical direction can be set to be between 80 and 90 degrees.

[0024] In this embodiment, the hinge linkage connector 3 is provided with a positioning bent convex surface 32 for closing the door panel, and the hinge body fixing plate 1 is provided with a positioning groove 13 that cooperates with the positioning bent convex surface. When the door panel is closed, the positioning bent convex surface on the hinge linkage connector enters the positioning groove to position the door panel, and the closing slide is bent in the closing direction of the door panel, so that the door panel can be closed tightly when closed. When the door panel is closed, the angle between the door panel and the vertical direction can be set to between -2 degrees and 0 degrees. In this embodiment, one end of the positioning bent convex surface of the hinge linkage connector is hinged to the door panel mounting plate through the hinge linkage connector hinge shaft 9, and the hinge linkage connector hinge shaft is located in the positioning groove. The door panel mounting plate 2 is provided with a bent U-shaped groove 21, and the hinge linkage connector and the hinge body fixing plate are both located in the U-shaped groove. Thus, the structure is compact, the connection is stable, and space is saved.

[0025] In this embodiment, bent side baffles 14 are provided on both sides of the hinge body fixing plate 1, and two second rollers are respectively connected to a side baffle roller, and the two second rollers are respectively installed on both sides of the hinge linkage connecting member. Therefore, the hinge linkage connecting member can slide stably and smoothly during the sliding process. At the same time, the hinge linkage connecting member can be better positioned so that the damping member and the damping inclined surface on the hinge body fixing plate are positioned and rubbed. In this embodiment, the damping member is a damping rubber block, and the damping rubber block is convexly arranged on the hinge linkage connecting member. In specific implementation, it can also be a damping member made of other materials such as soft plastic.

[0026] Although the specific embodiments of the present invention are described in detail in conjunction with the accompanying drawings, it should not be understood as limiting the scope of protection of the present invention. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still belong to the scope of protection of the present invention.

Claims

1. A downward-flipping door buffer hinge, comprising a hinge body fixing plate installed vertically, and a door panel mounting plate hinged to the hinge body fixing plate in an upward and downward manner, characterized in that: The buffer hinge also includes a buffer device arranged between the door panel mounting plate and the hinge body fixing plate, the buffer device includes a hinge linkage connecting piece connecting the door panel mounting plate and the hinge body fixing plate, and a damping mechanism for pulling the hinge linkage connecting piece to slide on the hinge body fixing plate to make the door panel open and close and suspend. The bottom end of the hinge linkage connecting piece is hinged to the door panel mounting plate, and the top end is connected to the damping mechanism. The hinge body fixing plate is provided with a guide slide for controlling the opening and closing of the door panel. The middle part of the hinge linkage connecting piece is rollingly connected to the guide slide through a first roller. The hinge linkage connecting piece is fixedly connected to the first roller shaft. The first roller The rolling part is arranged in the guide slide, and the two sides of the hinge linkage connecting member are rollingly connected to the hinge body fixing plate through two second rollers respectively; a damping slope obliquely downward is convexly provided on the hinge body fixing plate corresponding to the upper side of the guide slide, and the hinge linkage connecting member is connected to the damping slope through a damping member; the guide slide includes an arc-shaped hovering slide for suspending the door panel, a closing slide connected to the upper side of the arc-shaped hovering slide for automatically closing the door panel, and an opening slide connected to the lower side of the arc-shaped hovering slide for automatically falling and opening the door panel; the closing slide is bent in the closing direction of the door panel, and the closing slide and the opening slide are narrower than the hovering slide.

2. A buffer hinge for a downward-flipping door as claimed in claim 1, characterized in that: The damping mechanism is a tension spring, one end of which is fixedly connected to the hinge body fixing plate, and the other end of which is connected to the top end of the hinge linkage connecting piece.

3. The buffer hinge for a downward-flipping door according to claim 1, characterized in that: The hinge linkage connecting piece is provided with a limiting groove for opening the door panel to a maximum angle, and the hinge main body fixing plate is provided with a limiting column matched with the limiting groove.

4. The buffer hinge for a downward-flipping door according to claim 1, characterized in that: The hinge linkage connecting piece is provided with a positioning bending convex surface for closing the door panel, and the hinge main body fixing plate is provided with a positioning groove matched with the positioning bending convex surface.

5. A buffer hinge for a downward-flipping door as claimed in claim 4, characterized in that: One end of the positioning bent convex surface of the hinge linkage connecting piece is hinged to the door panel mounting plate through the hinge linkage connecting piece hinge shaft, the hinge linkage connecting piece hinge shaft is located in the positioning groove, the door panel mounting plate is provided with a bent U-shaped groove, and the hinge linkage connecting piece and the hinge body fixing plate are both located in the U-shaped groove.

6. The buffer hinge for a downward-flipping door according to claim 1, characterized in that: Bending side baffles are provided on both sides of the hinge main body fixing plate, the two second rollers are respectively connected to a side baffle roller, and the two second rollers are respectively installed on both sides of the hinge linkage connecting member.

7. The buffer hinge for a downward-flipping door according to claim 1, characterized in that: The damping member is a damping rubber block, which is convexly arranged on the hinge linkage connecting member.

8. The buffer hinge for a downward-flipping door according to claim 1, characterized in that: When the door panel is opened to the maximum angle, the angle between the door panel and the vertical direction is between 80 and 90 degrees.

9. The buffer hinge for a downward-flipping door according to claim 1, characterized in that: When the door panel is closed, the angle between the door panel and the vertical direction is between -2 degrees and 0 degrees.

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