Self-lubricating door hinge of refrigerator

Abstract

The utility model discloses a self-lubricating door hinge of a refrigerator, and relates to a door hinge of the refrigerator. The door hinge comprises a first mounting plate and a second mounting plate, the first mounting plate comprises a rotating plate, an extension plate flow guide mechanism and a lubricating mechanism are arranged, the rotating plate is arranged on the first mounting plate, two first fixing bolt holes, a rotating shaft groove and an arc-shaped sliding groove are formed in the top of the rotating plate, and the rotating plate is used for fixing and connecting all parts of the door hinge. A rotating shaft and a connecting plate are arranged on the second mounting plate, one side of the connecting plate is connected with a lubricating mechanism through an extending plate, a freezer door is excessively opened backwards, a liquid flowing pipe slides into the position over a spherical protruding block through an arc-shaped sliding groove, the spherical protruding block can jack up an abutting ball, lubricating oil flows into the liquid flowing pipe 406 from a liquid storage box, and then the liquid flowing pipe 406 is lubricated. By means of the design, automatic lubrication is achieved, manual intervention is not needed, and use convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a refrigerator door hinge, concretely is a refrigerator self -lubricating door hinge. BACKGROUND

[0002] The refrigerator door hinge is a metal component specially designed for connecting the refrigerator door and the refrigerator body, which allows the refrigerator door to rotate smoothly open and close. Compared with ordinary hinges, the refrigerator door hinge has stronger bearing capacity and durability to adapt to the opening and closing requirements of the refrigerator door due to its large weight. Its main materials include zinc alloy, stainless steel, etc. These materials not only have good corrosion resistance and mechanical strength, which can adapt to the humid and low-temperature environment inside the refrigerator, but also have a surface usually treated by electroplating to enhance its rust resistance and aesthetic appearance.

[0003] However, the existing refrigerator door hinge currently in use gradually loses its lubricating oil or dries out after a long time of use, resulting in increased friction between the hinge components. At this time, the refrigerator door emits a loud noise when closing, and even may not close properly, have a large gap, or cannot be tightly closed, which seriously affects the normal use and sealing performance of the refrigerator. SUMMARY

[0004] Therefore, the utility model aims to provide a refrigerator self-lubricating door hinge to solve the technical problems of existing refrigerator door hinges, such as the loss of lubricating oil or drying out after a long time of use, resulting in increased friction between the hinge components, and further causing noise, poor closing, large gap, or inability to tightly close when closing the refrigerator door.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a refrigerator self-lubricating door hinge, comprising a first mounting plate and a second mounting plate, the first mounting plate comprising a rotating plate, the top of the rotating plate being provided with two first fixing bolt holes, a rotating shaft slot, and an arc-shaped sliding groove;

[0006] The second mounting plate comprises a rotating shaft and a connecting plate, one side of the connecting plate being provided with a lubricating mechanism through an extension plate, the lubricating mechanism comprising a liquid storage box, the inside of the liquid storage box being provided with a liquid groove, and the liquid groove storing lubricating oil, the bottom of the liquid storage box being provided with a liquid passage, and the liquid passage penetrating through the second connecting plate;

[0007] The inside of the liquid passage is provided with a spring above, and a contact ball below, the contact ball being in contact with the spring, and the contact ball being used to block the pipe opening of the liquid passage.

[0008] By adopting the above-mentioned technical scheme, the lubricating mechanism realizes the automatic control of the lubricating oil through the design of the spring and the contact ball.

[0009] Further, the top of the liquid storage box is screwed with a box cover, the top of the box cover is provided with an injection plug, and the top of the injection plug is screwed with a sealing cover.

[0010] By adopting the technical scheme, the top of the liquid storage box is screwed with a box cover, the box cover is provided with an injection plug and a sealing cover. The design facilitates the addition and replacement of lubricating oil, and ensures the sealing of the liquid storage box to prevent lubricating oil leakage.

[0011] Further, the end of the arc-shaped sliding groove is provided with a flow guide mechanism, and the flow guide mechanism comprises a spherical protrusion.

[0012] By adopting the technical scheme, the end of the arc-shaped sliding groove is provided with a flow guide mechanism comprising a spherical protrusion. The design of the flow guide mechanism can guide the lubricating oil to the parts that need to be lubricated, improving the accuracy and efficiency of lubrication.

[0013] Further, a plurality of seepage holes are formed in the top of the spherical protrusion, and a drainage groove is formed in the bottom of the plurality of seepage holes.

[0014] By adopting the technical scheme, a plurality of seepage holes are formed in the top of the spherical protrusion, and a drainage groove is formed in the bottom of the plurality of seepage holes. This design increases the flow path of the lubricating oil, so that the lubricating oil can be more evenly distributed on the parts that need to be lubricated.

[0015] Further, the bottom end of the drainage groove penetrates into the spring seat, and the spherical protrusion abuts against the abutting ball.

[0016] By adopting the technical scheme, the bottom end of the drainage groove penetrates into the spring seat, and the spherical protrusion abuts against the abutting ball. This design realizes automatic release and stop of the lubricating oil without manual intervention, improving the convenience of use.

[0017] Further, the bottom of the rotating plate is provided with a spring seat, and the top of the spring seat is in communication with the rotating shaft groove.

[0018] By adopting the technical scheme, the bottom of the rotating plate is provided with a spring seat, and the top of the spring seat is in communication with the rotating shaft groove. This design provides a channel for the lubricating oil to flow to the rotating shaft, and also serves to support and fix the rotating shaft.

[0019] Further, the rotating shaft groove is provided with a rotating shaft, and the top of the rotating shaft is fixedly connected with the connecting plate.

[0020] By adopting the technical scheme, the rotating shaft groove is provided with a rotating shaft, and the top of the rotating shaft is fixedly connected with the connecting plate. This design realizes the rotating function of the door hinge, ensuring the normal use and durability of the door hinge.

[0021] Further, the back of the connecting plate is provided with a top plate, and three second fixing bolt holes are formed in the top plate.

[0022] By adopting the technical scheme, the door hinge is fixed and installed conveniently, and the stability and safety of the door hinge are improved.

[0023] To sum up, the utility model mainly has the following beneficial effects:

[0024] The utility model discloses a door hinge, which comprises a first mounting plate, a second mounting plate, a hinge part, a lubricating mechanism and an extension plate flow guide mechanism, wherein the first mounting plate is provided with a rotating plate, the top of the rotating plate is equipped with two first fixed bolt holes, a rotating shaft groove and an arc-shaped sliding groove, the hinge part is fixed and connected to the first mounting plate, the second mounting plate is provided with a rotating shaft and a connecting plate, the connecting plate is connected to the lubricating mechanism through the extension plate, a liquid tank is arranged in the second mounting plate, and a liquid channel is arranged in the liquid tank. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0026] Figure 2 It is a side view sectional three-dimensional structure schematic diagram of the utility model;

[0027] Figure 3 It is a lubricating mechanism local section structure schematic diagram of the utility model;

[0028] Figure 4 It is the structure schematic diagram of the utility model Figure 3 in A place amplification.

[0029] In the diagram: 1. First mounting plate; 101. Rotating plate; 102. First fixing bolt hole; 103. Spring seat; 104. Rotating shaft groove; 105. Arc-shaped sliding groove; 2. Second mounting plate; 201. Rotating shaft; 202. Connecting plate; 203. Top plate; 204. Second fixing bolt hole; 205. Extension plate; 3. Flow guiding mechanism; 301. Spherical protrusion; 302. Seepage hole; 303. Drainage groove; 4. Lubrication mechanism; 401. Liquid storage box; 402. Liquid tank; 403. Box cover; 404. Injection plug; 405. Sealing cover; 406. Liquid flow pipe; 407. Spring; 408. Abutment ball. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] A type of self-lubricating door hinge for freezers, such as Figures 1-4 As shown, it includes a first mounting plate 1 and a second mounting plate 2. The first mounting plate 1 includes a rotating plate 101. The top of the rotating plate 101 is provided with two first fixing bolt holes 102, a rotating shaft groove 104 and an arc-shaped sliding groove 105. The second mounting plate 2 includes a rotating shaft 201 and a connecting plate 202. A lubrication mechanism 4 is provided on one side of the connecting plate 202 through an extension plate 205. The lubrication mechanism 4 includes a liquid storage box 401. The liquid storage box 401 has a liquid tank 402 inside, and the liquid tank 402 stores lubricating oil. A liquid pipe 406 is provided at the bottom of the liquid storage box 401, and the liquid pipe 406 passes through the second connecting plate 202.

[0032] A spring 407 is installed above the interior of the liquid delivery pipe 406, and an abutment ball 408 is installed below the interior of the liquid delivery pipe 406. The abutment ball 408 abuts against the spring 407 and is used to block the opening of the liquid delivery pipe 406. The self-lubricating door hinge of this refrigerator achieves its basic structure through the ingenious design of the first mounting plate 1 and the second mounting plate 2. The top of the rotating plate 101 on the first mounting plate 1 has two first fixing bolt holes 102, which facilitates the stable installation of the door hinge. The design of the rotating shaft groove 104 and the arc-shaped sliding groove 105 provides space for the rotation of the rotating shaft and the flow of lubricating oil. The rotating shaft 201 on the second mounting plate 2 is fixedly connected to the connecting plate 202, realizing the rotation function of the door hinge. The setting of the lubrication mechanism 4, especially the cooperation of the liquid storage box 401, the liquid delivery pipe 406, the spring 407 and the abutment ball 408, realizes the automatic control and precise lubrication of the lubricating oil, improving the service life and reliability of the door hinge.

[0033] See Figure 1 , Figure 4The top of the liquid storage box 401 is screwed with a box cover 403, the top of the box cover 403 is provided with an injection plug 404, the top of the injection plug 404 is screwed with a sealing cover 405, and the sealing cover 405 on the box cover 403 and the injection plug 404 on the top of the liquid storage box 401 makes the addition and replacement of lubricating oil extremely convenient. This design not only improves the convenience of maintenance, but also ensures the sealing of the liquid storage box, effectively preventing the leakage of lubricating oil, thereby maintaining the cleanliness and lubrication effect of the door hinge.

[0034] Referring to Figure 3 , Figure 4 , the end of the arc-shaped sliding groove 105 is provided with a flow guide mechanism 3, which includes a spherical protrusion 301. The design of the flow guide mechanism 3, especially the spherical protrusion 301, effectively guides the flow of lubricating oil to the parts that need to be lubricated. This design not only improves the accuracy and efficiency of lubrication, but also reduces the waste of lubricating oil, making the operation of the door hinge smoother.

[0035] Referring to Figure 1 , Figure 2 , the top of the spherical protrusion 301 is provided with a plurality of seepage holes 302, and the bottom of the plurality of seepage holes 302 is provided with a drainage groove 303. The plurality of seepage holes 302 on the top of the spherical protrusion 301 and the drainage groove 303 on the bottom further optimize the flow path of the lubricating oil. This design allows the lubricating oil to be more evenly distributed on the parts that need to be lubricated, improving the uniformity and effectiveness of lubrication, thereby prolonging the service life of the door hinge.

[0036] Referring to Figure 3 , Figure 4 , the bottom end of the drainage groove 303 penetrates into the spring seat 103, and the spherical protrusion 301 abuts against the abutting ball 408. The design of the bottom end of the drainage groove 303 penetrating into the spring seat 103 and abutting against the abutting ball 408 realizes the automatic release and stop of the lubricating oil. When the door hinge rotates, the spherical protrusion 301 will push the abutting ball 408, causing the lubricating oil to flow out of the liquid outlet pipe 406 and lubricate the rotating shaft and other components. When the door hinge stops rotating, the spring 407 will push the abutting ball 408 back to its original position, blocking the pipe opening of the liquid outlet pipe 406 to prevent the leakage of lubricating oil. This design not only improves the convenience of use, but also ensures the cleanliness and lubrication effect of the door hinge.

[0037] Referring to Figure 1 , Figure 4A spring seat 103 is provided at the bottom of the rotating plate 101, and the top of the spring seat 103 is connected to the shaft groove 104. This design, where the spring seat 103 at the bottom of the rotating plate 101 is connected to the shaft groove 104, provides a channel for lubricating oil to flow to the shaft. At the same time, the spring seat 103 also supports and fixes the shaft, improving the stability and reliability of the door hinge. This design makes the door hinge rotate more smoothly, reducing noise and wear.

[0038] See Figure 3 , Figure 4 A pivot 201 is provided within the pivot groove 104, and the top of the pivot 201 is fixedly connected to the connecting plate 202. This design, where the pivot 201 within the pivot groove 104 is fixedly connected to the connecting plate 202, enables the hinge to rotate. This design makes the hinge open and close more smoothly, improving ease of use. Simultaneously, the fixed connection between the pivot 201 and the connecting plate 202 also ensures the hinge's durability and stability.

[0039] See Figure 1 , Figure 2 The connecting plate 202 has a top plate 203 on its back, and the top plate 203 has three second fixing bolt holes 204. The top plate 203 on the back of the connecting plate 202 and the three second fixing bolt holes 204 on the top plate 203 provide a stable mounting point for the door hinge. This design allows the door hinge to be firmly installed on the freezer, improving the stability and safety of the door hinge. At the same time, the design of the three second fixing bolt holes 204 also increases the flexibility and adaptability of installation, making the door hinge suitable for freezers of different models and specifications.

[0040] The implementation principle of this embodiment is as follows: First, the first mounting plate 1 is fixed to the corresponding position of the freezer door through the two first fixing bolt holes 102 on it. Then, the second mounting plate 2 is fixed to the freezer body through the three second fixing bolt holes 204 on the top plate 203 on its back, ensuring that the rotating shaft 201 can be smoothly inserted into the rotating shaft groove 104 on the first mounting plate 1, and that the relative position of the connecting plate 202 and the rotating plate 101 is correct.

[0041] In daily use, when the refrigerator door is opened and closed, the rotating shaft 201 rotates in the rotating shaft groove 104, and the abutting ball 408 blocks the pipe opening of the lubricating oil pipe 406 under the action of the spring 407 to prevent the lubricating oil from leaking. When it is necessary to add lubricating oil to the door hinge, the refrigerator door can be opened backward to change the relative position between the first mounting plate 1 and the second mounting plate 2. In this process, the lubricating oil pipe 406 will slide along the arc-shaped sliding groove 105 with the movement of the connecting plate 202, and finally slide into the position right above the spherical protrusion 301 of the flow guide mechanism 3. The spherical protrusion 301 will lift the abutting ball 408 to overcome the elastic force of the spring 407, so that the pipe opening of the lubricating oil pipe 406 is opened. The lubricating oil flows out of the liquid tank 402 in the lubricating oil storage box 401, flows into the seepage hole 302 at the top of the spherical protrusion 301 through the lubricating oil pipe 406, and then flows into the spring seat 103 through the drainage groove 303 to lubricate the rotating shaft 201.

[0042] When the addition of lubricating oil is completed, the refrigerator door is closed, and the lubricating oil pipe 406 moves away from the spherical protrusion 301 with the movement of the connecting plate 202. The abutting ball 408 blocks the pipe opening of the lubricating oil pipe 406 again under the action of the spring 407 to prevent the lubricating oil from continuing to leak.

[0043] Although the embodiments of the present application have been shown and described, the specific embodiments are only an explanation of the present application, and are not a limitation of the present application. The specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the present specification without departing from the principles and purposes of the present application. However, as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A self-lubricating door hinge for a freezer, characterized in that: It includes a first mounting plate (1) and a second mounting plate (2). The first mounting plate (1) includes a rotating plate (101). The top of the rotating plate (101) is provided with two first fixing bolt holes (102), a rotating shaft groove (104) and an arc-shaped sliding groove (105). The second mounting plate (2) includes a rotating shaft (201) and a connecting plate (202). A lubrication mechanism (4) is provided on one side of the connecting plate (202) through an extension plate (205). The lubrication mechanism (4) includes a liquid storage box (401). A liquid groove (402) is opened inside the liquid storage box (401), and the liquid groove (402) stores lubricating oil. A liquid flow pipe (406) is provided at the bottom of the liquid storage box (401), and the liquid flow pipe (406) passes through the second connecting plate (202). A spring (407) is provided at the upper part of the inside of the liquid flow pipe (406), and an abutting ball (408) is provided at the lower part of the inside of the liquid flow pipe (406). The abutting ball (408) abuts against the spring (407), and the abutting ball (408) is used to block the opening of the liquid flow pipe (406).

2. The self-lubricating door hinge for a freezer according to claim 1, characterized in that: The top of the liquid storage box (401) is screwed with a box cover (403), the top of the box cover (403) is provided with an injection plug (404), and the top of the injection plug (404) is screwed with a sealing cap (405).

3. The self-lubricating door hinge for a freezer according to claim 1, characterized in that: The end of the arc-shaped chute (105) is provided with a flow guiding mechanism (3), which includes a spherical protrusion (301).

4. The self-lubricating door hinge for a freezer according to claim 3, characterized in that: The top of the spherical protrusion (301) is provided with a plurality of seepage holes (302), and the bottom of the plurality of seepage holes (302) is provided with a drainage groove (303).

5. The self-lubricating door hinge for a freezer according to claim 4, characterized in that: The bottom end of the drainage groove (303) extends into the spring seat (103), and the spherical protrusion (301) abuts against the abutting ball (408).

6. The self-lubricating door hinge for a freezer according to claim 1, characterized in that: The bottom of the rotating plate (101) is provided with a spring seat (103), and the top of the spring seat (103) is connected to the rotating shaft groove (104).

7. The self-lubricating door hinge for a freezer according to claim 1, characterized in that: A rotating shaft (201) is provided in the rotating shaft groove (104), and the top of the rotating shaft (201) is fixedly connected to the connecting plate (202).

8. The self-lubricating door hinge for a freezer according to claim 1, characterized in that: The back of the connecting plate (202) is provided with a top plate (203), and the top plate (203) is provided with three second fixing bolt holes (204).

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