Refrigerator door hinge

Abstract

The utility model belongs to the technical field of door hinges, and particularly relates to a refrigerator door hinge which comprises a shell, an inner groove with two open ends is formed in the shell, a gear clamping piece and a ratchet gear are arranged in the inner groove in a sliding mode, the ratchet gear is meshed with the gear clamping piece, and a first sealing plug and a second sealing plug which are inserted into the openings are arranged at the two ends of the shell respectively. A spring is arranged between the gear clamping piece and the first sealing plug; a shell through hole is formed in the shell, a gear through hole is formed in the ratchet gear, a center shaft is detachably inserted in the gear through hole, a screw hole is formed in the inner end of the center shaft, and a screw cap in threaded connection with the screw hole is arranged in the gear through hole. Compared with the prior art, the door hinge can be universally used left and right by adjusting the insertion surfaces of the central shaft on the ratchet wheel and the shell, so that the manufacturing and using cost is reduced; the central shaft and the ratchet gear are firmly connected and are not easy to fall off, and a lifting gap for angle adjustment does not need to be reserved, so that the stability is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of door hinges, and particularly relates to a refrigerator door hinge. Background Art

[0002] Fresh-keeping cabinets can be divided into air-cooled open fresh-keeping cabinets and glass-door fresh-keeping cabinets. Their function is to slow down the activity of bacteria inside the food by lowering the temperature, thereby extending the shelf life. Glass-door fresh-keeping cabinets are increasingly being used due to their energy-saving and hygienic advantages. The glass door is connected to the cabinet body through a hinge. The glass door is generally equipped with a torsion spring to achieve automatic door closing. One end of the torsion spring is fixed in the glass door frame, and the other end is fixed on the hinge center axis. Before using the glass door, it is necessary to apply pre-tightening force to the torsion spring by rotating and locking the center axis. The designs of torsion springs fixing door shafts and hinges of different manufacturers are different. Some are troublesome to adjust, while others are easy to adjust but have other problems. For example, the adjustable lower hinge structure for the refrigerator glass door with publication number CN205243248U is easy to adjust but has the following defects: one is that the center shaft will raise the glass door when rotating to adjust the angle, and a gap needs to be reserved; the second is that the connection method of the center shaft is not reliable and is prone to falling off; the third is that the center shafts and hinges of the left and right doors are different. When the supermarket needs to reverse the left and right directions of the glass door, the center shaft and hinges must be replaced. Summary of the invention

[0003] In view of the above-mentioned defects, the purpose of the present invention is to provide a new refrigerator door hinge with a simple structure, compact components, good fixation, and universal for left and right cabinet doors. The present invention provides a refrigerator door hinge, including a shell, an inner groove with openings at both ends is provided inside the shell, a gear clamp and a ratchet gear are slidably arranged in the inner groove, the ratchet gear is meshed with the gear clamp, a first plug and a second plug are respectively provided at both ends of the shell for insertion into the opening, and a spring is provided between the gear clamp and the first plug; a shell through hole is provided on the shell, a gear through hole is provided on the ratchet gear, a central shaft is detachably inserted in the gear through hole, a screw hole is provided at the inner end of the central shaft, and a screw cover screwed with the screw hole is provided in the gear through hole.

[0004] Furthermore, two spring grooves are symmetrically arranged on the gear clamp, a spring is arranged in each of the spring grooves, and the outer ends of the two springs abut against the first sealing plug.

[0005] Furthermore, the gear through hole is a regular polygonal anti-rotation through hole, and the inner end of the central shaft is provided with a regular polygonal plug adapted to the anti-rotation through hole.

[0006] Furthermore, a step matched with the through hole of the shell is arranged on the central axis, and a sliding gap is formed between the step and the through hole of the shell.

[0007] Furthermore, the insertion ends of the first seal and the second seal are both provided with arc chamfers.

[0008] Furthermore, both ends of the shell are provided with fixing grooves, and the first sealing plug and the second sealing plug are both provided with avoidance grooves corresponding to the fixing grooves.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The door hinge can be used for both left and right purposes by adjusting the insertion surface of the center axis on the ratchet gear and the housing, thereby reducing the manufacturing and use costs.

[0011] 2. The connection between the center shaft and the ratchet gear is secure, and the ratchet gear is arranged inside the housing so that the connection of the center shaft will not fall off.

[0012] 3. Different from the existing end face ratchet connection method, the central axis of the door hinge can be directly plugged into the ratchet gear, without the need to reserve a lifting gap for angle adjustment, and has greater stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a top view cross-sectional view of the utility model after the central axis is disassembled;

[0015] Figure 3 The schematic diagram of the structure is the central axis;

[0016] Figure 4 It is a partial cross-sectional view of the front view of the utility model;

[0017] Figure 5 It is a top view of the utility model.

[0018] In the figure: 1. outer shell; 2. inner groove; 3. gear clamp; 4. ratchet gear; 5. first seal; 6. second seal; 7. spring; 8. outer shell through hole; 9. gear through hole; 10. center axis; 11. screw hole; 12. screw cover; 13. spring groove; 14. plug; 15. step; 16. fixing groove; 17. avoidance groove. DETAILED DESCRIPTION

[0019] In order to better understand the present invention, Figures 1 to 5 The implementation modes of the present utility model will be explained in detail.

[0020] It should be noted that the directions "front, back, left, right, up, down" mentioned in the text are all based on Figure 1 The directions of “front, back, left, right, up, and down” are used as the basis.

[0021] See also Figures 1 to 5 The utility model is a refrigerator door hinge, comprising a shell 1, an inner groove 2 with openings at both ends is provided inside the shell 1, a gear clamp 3 and a ratchet gear 4 are slidably provided in the inner groove 2, and the ratchet gear 4 is meshed with the gear clamp 3; a first sealing plug 5 and a second sealing plug 6 inserted into the opening are respectively provided at both ends of the shell 1, and a spring 7 is provided between the gear clamp 3 and the first sealing plug 5; a shell through hole 8 is provided on the shell 1, a gear through hole 9 is provided on the ratchet gear 4, a central shaft 10 is detachably inserted in the gear through hole 9, a screw hole 11 with an internal thread is provided at the inner end of the central shaft 10, and a screw cover 12 screwed to the screw hole 11 is provided in the gear through hole 9, such as Figure 4 As shown in the figure, the threaded end of the screw cover 12 is screwed to the central shaft 10, and the insertion end of the central shaft 10 is locked with the ratchet gear 4, so that the central shaft 10 is fixedly connected to the ratchet gear 4 and is rotatably arranged in the through hole 8 of the housing.

[0022] The preferred technical solution in this embodiment is as follows Figure 2 As shown in the figure, the gear clamp 3 is symmetrically provided with two spring grooves 13, each of which is provided with a spring 7, and the outer ends of the two springs 7 abut against the first sealing plug 5. Through the elastic force of the two symmetrical springs 7, each time the ratchet gear 4 rotates clockwise, the gear clamp 3 can be reset after the compression spring 7 slides outward, and the rotation direction of the ratchet gear 4 is continued to be restricted.

[0023] The preferred technical solution in this embodiment is as follows Figure 2 and Figure 3 As shown in , the gear through hole 9 is a regular polygonal anti-rotation through hole, and the inner end of the central shaft 10 is provided with a regular polygonal plug 14 adapted to the anti-rotation through hole.

[0024] The preferred technical solution in this embodiment is as follows Figure 1 and Figure 4 As shown in , the central shaft 10 is provided with a step 15 adapted to the shell through hole 8, and a sliding gap is provided between the step 15 and the shell through hole 8, so that the step 15 part of the central shaft 10 can smoothly rotate in the shell through hole 8.

[0025] The preferred technical solution in this embodiment is as follows Figure 2 As shown in FIG, the inner ends of the insertion ends of the first seal 5 and the second seal 6 are gradually narrowed and are both provided with arc chamfers to facilitate plug-in assembly.

[0026] The preferred technical solution in this embodiment is as follows Figure 1 and Figure 2As shown in FIG, both ends of the housing 1 are provided with fixing grooves 16 for mounting bolts to pass through and lock, and the first sealing plug 5 and the second sealing plug 6 are both provided with avoidance grooves 17 corresponding to the fixing grooves 16, and as shown in FIG. Figure 2 As shown in FIG. 1 , the first sealing plug 5 and the second sealing plug 6 support the fixing grooves 16 at both ends of the housing 1 .

[0027] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A refrigerator door hinge, characterized in that: The invention comprises a shell (1), wherein an inner groove (2) with openings at both ends is provided inside the shell (1), a gear clamp (3) and a ratchet gear (4) are slidably arranged in the inner groove (2), the ratchet gear (4) and the gear clamp (3) are meshed with each other, a first sealing plug (5) and a second sealing plug (6) inserted into the opening are respectively provided at both ends of the shell (1), and a spring (7) is provided between the gear clamp (3) and the first sealing plug (5); a shell through hole (8) is provided on the shell (1), and a gear through hole (9) is provided on the ratchet gear (4), a central shaft (10) is detachably inserted in the gear through hole (9), a screw hole (11) is provided at the inner end of the central shaft (10), and a screw cover (12) screwed to the screw hole (11) is provided in the gear through hole (9).

2. A refrigerator door hinge as claimed in claim 1, characterized in that: Two spring grooves (13) are symmetrically arranged on the gear clamp (3), a spring (7) is arranged in each of the spring grooves (13), and the outer ends of the two springs (7) abut against the first sealing plug (5).

3. A refrigerator door hinge as claimed in claim 1, characterized in that: The gear through hole (9) is a regular polygonal anti-rotation through hole, and the inner end of the central shaft (10) is provided with a regular polygonal plug (14) adapted to the anti-rotation through hole.

4. A refrigerator door hinge as claimed in claim 1, characterized in that: The central axis (10) is provided with a step (15) which matches the shell through hole (8).

5. A refrigerator door hinge as claimed in claim 1, characterized in that: The insertion ends of the first sealing plug (5) and the second sealing plug (6) are both provided with arc chamfers.

6. A refrigerator door hinge as claimed in claim 1, characterized in that: Both ends of the housing (1) are provided with fixing grooves (16), and both the first sealing plug (5) and the second sealing plug (6) are provided with avoidance grooves (17) corresponding to the fixing grooves (16).

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