Refrigerator door closer and refrigerator

Abstract

A refrigerator door closer and a refrigerator, wherein the door closer comprises a hinge device and a worm locking device, wherein the hinge device comprises a hinge seat, a first bevel gear, a shaft sleeve and a telescopic block device, wherein the shaft sleeve and the telescopic block device are mounted on the hinge seat, wherein the first bevel gear is connected to the hinge seat, wherein the worm locking device comprises a second bevel gear, a worm, a gear and a guide device, wherein the worm locking device is connected to the hinge device, and wherein the second bevel gear is meshedly connected to the first bevel gear. By fixing the first bevel gear on the hinge shaft, the first bevel gear is kept from rotating, and after being subjected to external force applied by the human body, the second bevel gear rotates, and the gear on the shaft drives the worm to move up and down, thereby realizing the locking and opening of the door body. The use of the novel door closer can solve the problem that the traditional plastic door closer cannot be closed after being used for a long time, and effectively prolongs the service life of the refrigerator.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerator manufacturing, in particular to a refrigerator door closer and a refrigerator. Background Art

[0002] In 1910, the world's first household refrigerator with compression refrigeration was launched in the United States. In 1925, Sweden's Lido Company developed a household absorption refrigerator. In 1927, General Electric Company of the United States developed a fully enclosed refrigerator. In 1930, the air-cooled continuous diffusion absorption refrigerator with different heating methods was put on the market. In the second half of the 1950s, household thermoelectric refrigerators began to be produced, and China began to produce electric refrigerators in the 1950s. After continuous development and evolution, refrigerators have become more convenient and practical. A refrigerator is a refrigeration device that maintains a constant low temperature, and it is also a civilian product that keeps food or other items at a constant low temperature. There are compressors, ice makers, cabinets or boxes for ice making, and storage boxes with refrigeration devices in the box. Now refrigerators are indispensable for every family.

[0003] With the progress in the field of science and technology and the rapid development of the refrigerator industry, people have put forward many requirements for refrigerators, from practicality to aesthetics and functionality. In addition to the compressor, the cabinet or box for ice making by the ice maker and the storage box with a refrigeration device, the refrigerator also has an indispensable component - the refrigerator door closer. The refrigerator door closer is one of the standard configurations of refrigerators. Most of the existing refrigerator door closers have a J-shaped end and a mountain-shaped tail wing of the hinge to achieve the closure of the freezing door body through interference fit. The material is generally metal or plastic to ensure that the box door will not be bounced open during the closing process. However, the problem with the existing refrigerator door closer is that the plastic and metal tail wings are easy to wear during the frequent opening and closing of the refrigerator. For a long time, the refrigerator door closer is easy to lose its function, and the door body will not be closed. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is a refrigerator door closer and a refrigerator to solve the problems raised by the above-mentioned background technology.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a refrigerator door closer, including a hinge device and a worm locking device, the hinge device includes a hinge seat, a first bevel gear, a shaft sleeve and a telescopic block device, the shaft sleeve and the telescopic block device are installed on the hinge seat, the first bevel gear is connected to the hinge seat, the worm locking device includes a second bevel gear, a worm, a gear and a guide device, the worm locking device is connected to the hinge device, and the second bevel gear is meshingly connected with the first bevel gear.

[0006] As a further improvement of the present invention: the hinge seat is provided with a hinge shaft, the hinge shaft is provided with a limit block, and the shaft sleeve is sleeved on the hinge shaft.

[0007] As a further improvement of the present invention: a nut is provided on the top of the hinge shaft, and the nut is used to fix the first bevel gear and the shaft sleeve on the hinge shaft.

[0008] As a further improvement of the present invention: an end cover is also provided on the hinge shaft, and the end cover is provided with two circular holes, one of the circular holes passes through the shaft sleeve, and the other circular hole passes through the worm.

[0009] As a further improvement of the present invention: the first bevel gear is fixedly mounted on the hinge shaft, a hollow structure matching with a limit block is provided at the bottom of the first bevel gear, and gear teeth are provided at the top of the first bevel gear.

[0010] As a further improvement of the present invention: the shaft sleeve is made of plastic material, the shaft sleeve is a cylindrical structure, and the shaft sleeve is used to fix and support the first bevel gear.

[0011] As a further improvement of the present invention: the second bevel gear is connected to the gear rod, the gear rod is coupled to the gear, one side of the second bevel gear is provided with gear teeth, and the gear teeth of the second bevel gear are meshed with the gear teeth of the first bevel gear.

[0012] As a further improvement of the present invention: the rod body of the worm is a structure that is thick in the middle and thin at both ends, a thread is provided in the middle of the rod body of the worm, the thread of the worm is meshed with the gear, and a guide thread is provided on the top of the worm.

[0013] As a further improvement of the present invention: the guide device is arranged in the refrigerator box body, one end of the guide device is connected to the refrigerator box body, the other end of the guide device is connected to the worm, and the guide device is provided with an internal thread structure.

[0014] As a further improvement of the present invention: a support and guide device is provided at the bottom of the refrigerator box body, one end of the support and guide device is connected to the refrigerator box body, and the other end of the support and guide device is connected to the worm locking device, and the support and guide device is used to support the worm.

[0015] As a further improvement of the present invention: a spring is installed at the bottom of the rod body of the worm, and the spring is used to fix the guide device.

[0016] As a further improvement of the present invention: the worm locking device is placed in the refrigerator box to prevent it from being affected by the foaming process of the refrigerator door.

[0017] As a further improvement of the present invention: the working method of the refrigerator door closer comprises the following specific steps: S1. when the refrigerator door is closed, an external force for opening the door is applied to the door, so that the hinge device moves, the hinge seat of the hinge device is fixedly connected to the first bevel gear, the first bevel gear itself is fixed and does not rotate, the hinge seat and the first bevel gear move with the hinge device, and drive the second bevel gear meshing with the first bevel gear to rotate itself;

[0018] S2. The second bevel gear is fixedly connected to the gear rod. The second bevel gear rotates itself and drives the gear rod to rotate. The thread of the worm body meshing with the gear follows the movement, and the worm moves vertically upward.

[0019] S3. When the worm moves upward and the bottom of the worm locking device separates from the telescopic block device, the refrigerator door opens;

[0020] S4. When the refrigerator door is opened, an external force is applied to the door to close the door, so that the hinge device moves, the hinge seat of the hinge device is fixedly connected to the first bevel gear, the first bevel gear itself is fixed and does not rotate, the hinge seat and the first bevel gear move with the hinge device, and the second bevel gear meshing with the first bevel gear rotates itself;

[0021] S5. The second bevel gear is fixedly connected to the gear rod, the second bevel gear rotates itself together with the gear rod to drive the gear to rotate, the worm rod body thread engaged with the gear follows the movement, and the worm moves vertically downward;

[0022] S6. The worm moves downward, and when the bottom of the worm locking device contacts the telescopic block device, the refrigerator door is closed and locked.

[0023] A refrigerator comprises the refrigerator door closer mentioned above, wherein the refrigerator door closer is connected to the refrigerator door body and is used for locking and opening the refrigerator door body.

[0024] Compared with the prior art, the invention has the following beneficial effects: the invention adopts a worm as a locking device to achieve cooperation with a hinge device to achieve the purpose of locking the door body. By fixing the first bevel gear on the hinge shaft, the first bevel gear is kept from rotating. After being subjected to external force applied by the human body, the second bevel gear rotates, and the second bevel gear together with the gear shaft drives the gear to rotate, and the gear drives the worm to move vertically through the thread closely combined with the worm rod body. When the worm moves upward, the support guide device passes over the critical point of the telescopic block device, and the refrigerator door body opens; when the worm moves downward, the support guide device moves downward to contact the telescopic block device, and the locking device squeezes the telescopic block and enters the designated area, and the refrigerator door body is locked, thereby achieving the locking and opening of the door body. However, in the process of frequent opening and closing of the traditional plastic door closer structure, the plastic and metal tail wings are easy to fail. After long-term use, the door closer will lose its function and the door body cannot be closed. The use of the new door closer can solve the problem that the traditional plastic door closer cannot be closed after a long time of use, and effectively extend the service life of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 An exploded view of the hinge device of the present invention;

[0027] Figure 3 An exploded view of the worm locking device of the present invention;

[0028] Figure 4 It is a schematic diagram of the hinge seat structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the first bevel gear of the present invention;

[0030] Figure 6 It is a schematic diagram of the shaft sleeve structure of the present invention;

[0031] Figure 7 It is a schematic diagram of the end cover structure of the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of the support and guide device of the present invention. DETAILED DESCRIPTION

[0033] The present invention is further described with reference to the accompanying drawings and embodiments: Figures 1 to 8As shown: a refrigerator door closer, including a hinge device 1 and a worm locking device 2, the hinge device 1 includes a hinge seat 11, a first bevel gear 12, a shaft sleeve 13 and a telescopic block device 18, the shaft sleeve 13 and the telescopic block device 18 are mounted on the hinge seat 11, the first bevel gear 12 is connected to the hinge seat 11, the worm locking device 2 includes a second bevel gear 21, a worm 22, a gear 23 and a guide device 24, the worm locking device 2 is connected to the hinge device 1, and the second bevel gear 21 is meshed with the first bevel gear 12.

[0034] The hinge seat 11 is provided with a hinge shaft 14 , the hinge shaft 14 is provided with a limit block 15 , and the shaft sleeve 13 is sleeved on the hinge shaft 14 .

[0035] A nut 16 is disposed on the top of the hinge shaft 14 , and the nut 16 is used to fix the first bevel gear 12 and the shaft sleeve 13 on the hinge shaft 14 .

[0036] The hinge shaft 14 is also provided with an end cover 17 , and the end cover 17 is provided with two circular holes, one of which passes through the shaft sleeve 13 , and the other one passes through the worm 22 .

[0037] The first bevel gear 12 is fixedly mounted on the hinge shaft 14 . A hollow structure matching with the limit block 15 is provided at the bottom of the first bevel gear 12 . Gear teeth are provided at the top of the first bevel gear 12 .

[0038] The shaft sleeve 13 is made of plastic and has a cylindrical structure. The shaft sleeve 13 is used to fix and support the first bevel gear 12 .

[0039] The first bevel gear 12 has a certain diameter, and one of the circular holes of the end cover 17 passes through the first bevel gear 12 and the shaft sleeve 13. The shaft sleeve 13 is provided with a limiting ring, and the limiting ring is used to position the end cover 17. The shaft sleeve 13 is tightly connected to the end cover 17, and the shaft sleeve 13 fixes and supports the first bevel gear 12 so that the hinge seat cooperates with the door body.

[0040] The second bevel gear 21 is connected to the gear rod 25 , and the gear rod 25 is coupled to the gear 23 . One side of the second bevel gear 21 is provided with gear teeth, and the gear teeth of the second bevel gear 21 mesh with the gear teeth of the first bevel gear 12 .

[0041] The rod body of the worm 22 is a structure that is thick in the middle and thin at both ends. A thread is provided in the middle of the rod body of the worm 22 . The thread of the worm 22 is meshed with the gear 23 . A guide thread 26 is provided on the top of the worm 22 .

[0042] The guide device 24 is arranged in the refrigerator body, one end of the guide device 24 is connected to the refrigerator body, and the other end of the guide device 24 is connected to the worm 22. The guide device 24 is provided with an internal thread structure.

[0043] A support guide device 27 is provided at the bottom of the refrigerator body. One end of the support guide device 27 is connected to the refrigerator body, and the other end of the support guide device 27 is connected to the worm locking device 2. The support guide device 27 is used to support the worm 22.

[0044] A spring 28 is installed at the bottom of the rod body of the worm 22 , and the spring 28 is used to fix the guide device 24 .

[0045] The worm locking device 2 is placed in the refrigerator box to prevent it from being affected by the foaming process of the refrigerator door.

[0046] The limiting block 15 is used to fix the installation height of the first bevel gear, so as to cooperate with the nut to fix the installation position of the first bevel gear.

[0047] The surfaces of the first bevel gear 12 , the second bevel gear 21 and the gear 23 need to be oiled, and the oiling treatment is performed by applying lubricating oil.

[0048] A refrigerator comprises the refrigerator door closer mentioned above, wherein the refrigerator door closer is connected to the refrigerator door body and is used for locking and opening the refrigerator door body.

[0049] The working method of the refrigerator door closer comprises the following specific steps:

[0050] S1. When the refrigerator door is closed, an external force is applied to the door to open the door, so that the hinge device 1 moves, the hinge seat 14 of the hinge device 1 is fixedly connected to the first bevel gear 12, the first bevel gear 12 itself is fixed and does not rotate, the hinge seat 14 and the first bevel gear 12 move with the hinge device 1, and drive the second bevel gear 21 meshing with the first bevel gear 12 to rotate itself;

[0051] S2. The second bevel gear 21 is fixedly connected to the gear rod 25. The second bevel gear 21 rotates together with the gear rod 25 to drive the gear 23 to rotate. The worm 22 meshing with the gear 23 follows the movement of the rod body thread, and the worm 22 moves vertically upward;

[0052] S3. The worm 22 moves upward, and when the bottom of the worm locking device 2 is separated from the telescopic block device 18, the refrigerator door is opened;

[0053] S4. When the refrigerator door is opened, an external force is applied to close the door, so that the hinge device 1 moves, the hinge seat 14 of the hinge device 1 is fixedly connected to the first bevel gear 12, the first bevel gear 12 itself is fixed and does not rotate, the hinge seat 14 and the first bevel gear 12 move with the hinge device 1, and drive the second bevel gear 21 meshing with the first bevel gear 12 to rotate itself;

[0054] S5. The second bevel gear 21 is fixedly connected to the gear rod 25. The second bevel gear 21 rotates together with the gear rod 25 to drive the gear 23 to rotate. The worm 22 meshing with the gear 23 follows the movement of the rod body thread, and the worm 22 moves vertically downward;

[0055] S6. The worm 22 moves downward, and when the bottom of the worm locking device 2 contacts the telescopic block device 18, the refrigerator door is closed and locked.

[0056] The working principle of the present invention is as follows: by fixing the first bevel gear 12 and the end of the hinge shaft 14 together, and the first bevel gear 12 is in a vertical state, the purpose is to ensure that there is interaction between the first bevel gear 12 and the second bevel gear 21, and the first bevel gear 12 is fixed and does not rotate, and relatively drives the second bevel gear 21 to rotate. At the same time, before assembling the two bevel gears, a sleeve 13 needs to be assembled on the hinge shaft 14 to ensure that the end cover 17 of the door body is in a stable state during the assembly process. The second bevel gear 21 is connected to a gear 23 on the gear rod 25, and the gear 23 cooperates with the worm 22 to drive the worm 22 to move up and down in the vertical direction. The hinge seat 11 has a telescopic block device 18 that cooperates with the worm locking device 2, and the opening and locking of the door body are realized by the up and down movement of the worm 22 and the rotation of the hinge shaft 14.

[0057] The main function of the present invention is as follows: the present invention adopts a worm as a locking device to achieve the purpose of locking the door body by cooperating with the hinge. By fixing the first bevel gear on the hinge shaft, the first bevel gear is kept from rotating. After the external force applied by the human body, the hinge shaft and the first bevel gear are displaced to drive the second bevel gear to rotate. The second bevel gear and the gear shaft drive the gear to rotate, and the gear drives the worm to move vertically through the thread closely combined with the worm rod body. When the worm moves upward, the support guide device passes the critical point of the telescopic block device, and the refrigerator door body opens; when the worm moves downward, the support guide device moves downward to contact the telescopic block device, and the locking device squeezes the telescopic block and enters the designated area, and the refrigerator door body is locked, thereby realizing the locking and opening of the door body. However, in the process of frequent opening and closing, the plastic and metal tail wings of the traditional plastic door closer structure are easy to fail. After long-term use, the door closer will lose its function and the door body cannot be closed. The use of this new door closer can solve the problem that the traditional plastic door closer cannot be closed after a long time of use, and effectively extend the service life of the refrigerator.

[0058] In summary, after reading the present invention document, ordinary technicians in this field can make various other corresponding transformation schemes based on the technical scheme and technical concept of the present invention without creative mental work, which all fall within the scope of protection of the present invention.

Claims

1. A refrigerator door closer, characterized in that: It includes a hinge device and a worm locking device, the hinge device includes a hinge seat, a first bevel gear, a shaft sleeve and a telescopic block device, the shaft sleeve and the telescopic block device are installed on the hinge seat, the first bevel gear is connected to the hinge seat, the worm locking device includes a second bevel gear, a worm, a gear and a guide device, the worm locking device is connected to the hinge device, the second bevel gear is meshed with the first bevel gear, a thread is provided in the middle of the rod body of the worm, the thread of the worm is meshed with the gear, a guide thread is provided on the top of the worm, the guide device is provided in the refrigerator box body, one end of the guide device is connected to the refrigerator box body, the other end of the guide device is connected to the worm, the guide device is provided with an internal thread structure, the hinge seat is provided with a hinge shaft, a limit block is provided on the hinge shaft, and the shaft sleeve is sleeved on the hinge shaft.

2. A refrigerator door closer according to claim 1, characterized in that: An end cover is also provided on the hinge shaft, and the end cover is provided with two circular holes.

3. A refrigerator door closer according to claim 2, characterized in that: The first bevel gear is fixedly mounted on the hinge shaft, a hollow structure matching with the limit block is provided at the bottom of the first bevel gear, and gear teeth are provided at the top of the first bevel gear.

4. A refrigerator door closer according to claim 3, characterized in that: The worm locking device also includes a gear rod, the second bevel gear is connected to the gear rod, the gear rod is coupled to the gear, one side of the second bevel gear is provided with gear teeth, and the gear teeth of the second bevel gear are meshed with the gear teeth of the first bevel gear.

5. The refrigerator door closer according to claim 1, characterized in that: A spring is arranged at the bottom of the rod body of the worm, and the spring is used for fixing the guide device.

6. A refrigerator, characterized in that: It comprises the refrigerator door closer as described in any one of claims 1 to 5, and the refrigerator door closer is used for locking and opening the refrigerator door.

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