Hinge for upright refrigerator

Abstract

The present invention relates to a hinge for an upright refrigerator, for use in solving the problems of loud impact noise and inconvenience in use when closing doors of existing upright refrigerators. The hinge for an upright refrigerator comprises a housing and a hinge shaft; the housing is rotationally connected to the hinge shaft by means of a damping mechanism; the damping mechanism comprises a guide piece, eccentric cams, and a spring assembly; a guide rail is arranged on the guide piece; the guide rail comprises an inner recessed arc surface and an outer protruding arc surface connected to the inner recessed arc surface; and a roller is arranged on the eccentric cams. During use, the housing is mounted to a refrigerator door, and the hinge shaft is mounted to a refrigerator body; when the refrigerator door rotates, the eccentric cams are driven to rotate; the roller on the eccentric cams rotate along the guide rail on the guide piece; the spring assembly pushes the roller on the eccentric cams to abut against the guide rail on the guide piece; when the roller is located on the inner recessed arc surface, the spring assembly drives the roller to roll along the inner recessed arc surface, and the refrigerator door is automatically closed, so that the refrigerator door can be automatically closed within a certain angle, the closing noise is small; and when the roller is located on the outer protruding arc surface, the refrigerator door is stopped, so that the use is convenient.

Description

Vertical refrigerator hinge TECHNICAL FIELD

[0001] The present application relates to a vertical refrigerator hinge. BACKGROUND

[0002] The current vertical refrigerator usually needs to use a certain force to close the refrigerator door tightly when the light door, causing the impact noise of closing the door is very large, if the use of smaller force, the refrigerator door is easy to close tightly, thereby affecting the preservation of food in the refrigerator. TECHNICAL PROBLEM

[0003] The purpose of the present application is to solve the problem of the existing vertical refrigerator when closing the door impact noise, inconvenient to use. TECHNICAL SOLUTION

[0004] In order to solve the technical problems proposed in the present application, the technical scheme adopted is: the vertical refrigerator hinge of the present application comprises a shell for mounting with the door and a hinge shaft for mounting with the cabinet, the shell and the hinge shaft are connected by a damping mechanism, the damping mechanism comprises a guide and an eccentric cam, the guide is fixed on the hinge shaft, the eccentric cam is rotatably arranged on the shell through an eccentric cam shaft, the guide is provided with a guide rail, the guide rail comprises an inner concave arc surface and an outer convex arc surface connected with the inner concave arc surface, the eccentric cam is provided with a roller, the damping mechanism further comprises a spring assembly for pushing the roller to abut against the guide rail during rotation, the spring assembly is arranged on the shell, when the roller is located on the inner concave arc surface, the spring assembly drives the roller to roll along the inner concave arc surface, and the door is automatically closed, when the roller is located on the outer convex arc surface, the door is suspended.

[0005] The technical scheme further limited to the present application includes:

[0006] The spring assembly comprises a spring and a telescopic guide rod, the tail end of the telescopic guide rod is rotatably connected with the shell through a guide rod first rotating shaft, the head end of the telescopic guide rod is rotatably connected with the eccentric cam through a guide rod second rotating shaft, the tail end of the spring is connected with the tail end of the telescopic guide rod, and the head end of the spring abuts against the head end of the telescopic guide rod.

[0007] The telescopic guide rod comprises a guide column and a guide sleeve, the head end of the guide sleeve is rotatably connected with the guide rod second rotating shaft, the tail end of the guide column is provided with a guide rod mounting frame, the guide rod mounting frame is rotatably connected with the guide rod first rotating shaft, the head end of the guide column is inserted into the guide sleeve, the guide column and the guide sleeve are slidably connected, the spring is sleeved on the telescopic guide rod, and the guide sleeve is provided with a stop table abutting against the spring.

[0008] The eccentric cam is a triangular structure, three angles of the triangular structure are circular arc angles, the eccentric cam rotating shaft, the roller and the guide rod rotating shaft are respectively located at the three angles of the triangular structure, and the spring is in abutment with the outer periphery of the triangular structure.

[0009] The eccentric cam is made of metal material.

[0010] The shell is a U-shaped structure, both sides of the U-shaped structure are provided with hinge shaft holes matched with hinge shafts, two eccentric cams are arranged, the roller is located between the two eccentric cams, the eccentric cam rotating shaft penetrates through the two eccentric cams, and both ends of the eccentric cam rotating shaft are fixedly connected with both sides of the U-shaped structure.

[0011] A wear-resistant damping bushing is arranged on each hinge shaft hole, the hinge shaft is rotationally connected with the shell through the wear-resistant damping bushing arranged on the hinge shaft hole, the guide piece is located between the two wear-resistant damping bushings, a first wear-resistant damping pad is arranged on the eccentric cam rotating shaft between the eccentric cam and the shell, and a second wear-resistant damping pad is arranged on the guide rod second rotating shaft between the guide rod and the shell.

[0012] A half-moon-shaped positioning table is arranged on the hinge shaft, and the guide piece is provided with a positioning hole matched with the half-moon-shaped positioning table. Beneficial effects

[0013] Through the above technical scheme, the beneficial effects of the vertical refrigerator hinge are as follows: when the vertical refrigerator hinge is used, the shell and the door are installed, the hinge shaft and the cabinet are installed, the door is rotated to drive the eccentric cam to rotate, the roller on the eccentric cam is rotated along the guide rail of the guide piece, the spring assembly drives the roller on the eccentric cam to abut against the guide rail on the guide piece, when the roller is located on the inner concave arc surface, the spring assembly drives the roller to roll along the inner concave arc surface, and the door is automatically closed, so that the door can be automatically closed within a certain angle, the closing noise is small, and when the roller is located on the outer convex arc surface, the door is suspended, so that the use is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a schematic diagram of the three-dimensional structure of the vertical refrigerator hinge.

[0015] Fig. 2 is a schematic diagram of the structure of the door of the vertical refrigerator hinge in a closed state.

[0016] Fig. 3 is an exploded schematic diagram of the vertical refrigerator hinge.

[0017] Fig. 4 is a schematic diagram of the structure of the roller of the vertical refrigerator hinge located at the junction of the inner concave arc surface and the outer convex arc surface.

[0018] Fig. 5 is a structural schematic diagram of the door of the vertical refrigerator hinge of the present application when opened to the maximum angle. Best mode of the present application

[0019] The structure of the present application is further explained below in conjunction with the drawings.

[0020] Referring to Figs. 1 to 5, a vertical refrigerator hinge comprises a housing 1 for mounting with a door, a hinge shaft 2 for mounting with a cabinet, the housing and the hinge shaft being rotationally connected through a damping mechanism 3, the damping mechanism 3 comprising a guide 31 fixedly provided on the hinge shaft and an eccentric cam 32 rotationally provided on the housing through an eccentric cam rotation shaft 34, the guide 31 being provided with a guide track 311 comprising an inner concave arc surface 3111 and an outer convex arc surface 3112 connected with the inner concave arc surface, the eccentric cam being provided with a roller 321, the damping mechanism further comprising a spring assembly 33 for pushing the roller to abut against the guide track during rotation, the spring assembly being provided on the housing, when the roller is located on the inner concave arc surface, the spring assembly drives the roller to roll along the inner concave arc surface, the door being automatically closed, when the roller is located on the outer convex arc surface, the door is in a hovering state. In use, the housing is mounted with the door, the hinge shaft is mounted with the cabinet, when the door is rotated, the eccentric cam is rotated, the roller on the eccentric cam is rotated along the guide track of the guide, the spring assembly pushes the roller on the eccentric cam to abut against the guide track of the guide, when the roller is located on the inner concave arc surface, the spring assembly drives the roller to roll along the inner concave arc surface, the door is automatically closed, so that the door can be automatically closed within a certain angle, the closing noise is small, when the roller is located on the outer convex arc surface, the door is in a hovering state, so that the use is convenient. In the present embodiment, the hinge shaft 2 is provided with a half-moon shaped positioning table 21, the guide 31 is provided with a positioning hole matched with the half-moon shaped positioning table, so that the guide is fixedly connected with the hinge shaft. In the present embodiment, when the angle between the door and the cabinet is 45 degrees, the roller is located at the junction of the inner concave arc surface and the outer convex arc surface, i.e. when the angle between the door and the cabinet is less than 45 degrees, the door is automatically closed. When the opening angle of the door is greater than 45 degrees, the roller is located on the outer convex arc surface, at this time, the door is in a hovering state, in actual use, the maximum opening angle of the door can be limited according to the need. In the present embodiment, the maximum angle is limited to 140 degrees.

[0021] In the embodiment, the spring assembly 33 comprises a spring 331 and a telescopic guide rod 332. The tail end of the telescopic guide rod is rotatably connected to the shell through a guide rod first rotating shaft 333. The head end of the telescopic guide rod 332 is rotatably connected to the eccentric cam through a guide rod second rotating shaft 334. The tail end of the spring 331 is connected to the tail end of the telescopic guide rod, and the head end of the spring is abutted to the head end of the telescopic guide rod. In the embodiment, the telescopic guide rod 332 comprises a guide column 3321 and a guide sleeve 3322. The head end of the guide sleeve is rotatably connected to the guide rod second rotating shaft. The tail end of the guide column 3321 is provided with a guide rod mounting bracket 33211, which is rotatably connected to the guide rod first rotating shaft. The head end of the guide column is inserted into the guide sleeve, and the guide column is slidably connected to the guide sleeve. The spring is sleeved on the telescopic guide rod. The guide sleeve 3322 is provided with a stop table 33221 abutted to the spring. When the box door is rotated to drive the eccentric cam to rotate, the eccentric cam drives the roller and the telescopic guide rod to rotate, and the spring drives the roller to abut to the guide rail. The telescopic guide rod is telescoped under the action of the spring, and the spring is telescoped stably under the guidance of the telescopic guide rod, and will not be twisted and deformed.

[0022] In the embodiment, the eccentric cam 32 is a triangular structure, and the three angles of the triangular structure are all circular arc angles. The eccentric cam rotating shaft, the roller and the guide rod rotating shaft are respectively located at the three angles of the triangular structure, and the spring is abutted to the outer periphery of the triangular structure. Thus, in the rotating process, the spring is abutted to the outer periphery of the eccentric cam, and the eccentric cam can share part of the pressure of the spring. The spring can prevent the telescopic guide rod from being damaged. In the embodiment, the telescopic guide rod is made of plastic material, and the eccentric cam is made of metal material. Thus, the collision noise in the rotating overshoot can be reduced.

[0023] In the embodiment, the shell 1 is a U-shaped structure, and both sides of the U-shaped structure are provided with a hinge shaft hole 11 matched with a hinge shaft. Two eccentric cams are arranged, and the roller is located between the two eccentric cams. The eccentric cam rotating shaft penetrates through the two eccentric cams, and the two ends of the eccentric cam rotating shaft are fixedly connected to the two sides of the U-shaped structure. The two ends of the guide rod first rotating shaft and the guide rod second rotating shaft are respectively fixedly connected to the two sides of the U-shaped structure. Thus, the overall structure is firm.

[0024] In the embodiment, a wear-resistant damping bushing 12 is arranged on each hinge shaft hole 11. The hinge shaft is rotatably connected to the shell through the wear-resistant damping bushing arranged on the hinge shaft hole. The guide member is located between the two wear-resistant damping bushings. The first wear-resistant damping pad 13 is arranged on the eccentric cam rotating shaft between the eccentric cam and the shell. Thus, the vibration noise of the eccentric cam and the shell during rotation is reduced. The second wear-resistant damping pad 14 is arranged on the guide rod second rotating shaft between the guide rod and the shell. Thus, the vibration noise of the guide rod and the shell during rotation is reduced.

[0025] Although the specific embodiments of the present application are described in detail with reference to the accompanying drawings, it should be understood that the detailed description is not intended to limit the scope of the present application. Various modifications and variations of the present application, which would be apparent to those skilled in the art, are still within the scope of the present application as described in the claims.

Claims

1. A hinge for an upright refrigerator, comprising a housing for mounting on a refrigerator door and a hinge shaft mounted on a refrigerator body, wherein the housing and the hinge shaft are rotationally connected via a damping mechanism, characterized in that: The damping mechanism includes a guide member and an eccentric cam, the guide member is fixed on the hinge shaft, the eccentric cam is rotatably arranged on the outer shell through the eccentric cam shaft, the guide member is provided with a guide track, the guide track includes an inner concave arc surface and an outer convex arc surface connected to the inner concave arc surface, the eccentric cam is provided with a roller, and the damping mechanism also includes a spring assembly that pushes the roller to abut against the guide track when rotating, and the spring assembly is arranged on the outer shell. When the roller is located on the inner concave arc surface, the spring assembly drives the roller to roll along the inner concave arc surface, and the box door is automatically closed. When the roller is located on the outer convex arc surface, the box door hovers.

2. The hinge for an upright refrigerator according to claim 1, wherein: The spring assembly includes a spring and a telescopic guide rod. The tail end of the telescopic guide rod is rotatably connected to the housing through a first guide rod rotating shaft, and the head end of the telescopic guide rod is rotatably connected to the eccentric cam through a second guide rod rotating shaft. The tail end of the spring is connected to the tail end of the telescopic guide rod, and the head end of the spring abuts against the head end of the telescopic guide rod.

3. The hinge for an upright refrigerator according to claim 2, wherein: The telescopic guide rod includes a guide column and a guide sleeve. The head end of the guide sleeve is rotatably connected to the second rotating shaft of the guide rod. The tail end of the guide column is provided with a guide rod mounting bracket. The guide rod mounting bracket is rotatably connected to the first rotating shaft of the guide rod. The head end of the guide column is inserted into the guide sleeve. The guide column and the guide sleeve are slidably connected. The spring is sleeved on the telescopic guide rod, and the guide sleeve is provided with a stop that abuts the spring.

4. The hinge for an upright refrigerator according to claim 2, wherein: The eccentric cam is a triangular structure, and the three corners of the triangular structure are all arc angles. The eccentric cam shaft, roller and guide rod shaft are respectively located on the three corners of the triangular structure, and the spring abuts against the outer periphery of the triangular structure.

5. The hinge for an upright refrigerator according to claim 4, wherein: The telescopic guide rod is made of plastic material, and the eccentric cam is made of metal material.

6. The hinge for an upright refrigerator according to claim 2, wherein: The shell is a U-shaped structure, and both sides of the U-shaped structure are provided with hinge holes that cooperate with the hinge shaft. There are two eccentric cams, and the roller is located between the two eccentric cams. The eccentric cam rotating shaft passes through the two eccentric cams, and the two ends of the eccentric cam rotating shaft are respectively fixedly connected to the two sides of the U-shaped structure, and the two ends of the guide rod first rotating shaft and the guide rod second rotating shaft are respectively fixedly connected to the two sides of the U-shaped structure.

7. The hinge for an upright refrigerator according to claim 6, wherein: A wear-resistant and shock-absorbing sleeve is provided on each hinge shaft hole, and the hinge shaft is rotatably connected to the outer shell through the wear-resistant and shock-absorbing sleeve provided on the hinge shaft hole. The guide member is located between the two wear-resistant and shock-absorbing sleeves. A first wear-resistant and shock-absorbing pad is provided on the eccentric cam rotating shaft between the eccentric cam and the outer shell, and a second wear-resistant and shock-absorbing pad is provided on the guide rod second rotating shaft between the guide rod and the outer shell.

8. The hinge for an upright refrigerator according to claim 1, wherein: The hinge shaft is provided with a semi-moon shaped positioning platform, and the guide piece is provided with a positioning hole matched with the semi-moon shaped positioning platform.

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