A refrigerator door opening structure and a double-door refrigerator with left and right side doors

Abstract

The present invention provides a refrigerator door opening structure, which includes a door hinge shaft structure and a door lock structure; the door hinge shaft insertion hole is located at the front end of the door support and has a notch, and forms a door hinge shaft structure with the door hinge shaft; the door lock structure includes a door lock main shaft and a door lock mechanism; the door lock main shaft is rotatably arranged inside the side part of the door body; the door lock main shaft can drive the front end of the lock head of the door lock mechanism to insert into the lock hole through the link mechanism of the door lock mechanism to lock the door body; and can also push the lock head out of the lock hole to unlock the door body. The present invention also provides a double-door refrigerator with left and right sides, in which the door body and the box body are connected through 2 upper door hinge connection structures and 2 lower door hinge connection structures, and each hinge connection structure is provided with a door hinge shaft structure; the door lock structure includes 2 groups symmetrically arranged and correspondingly arranged between the upper door hinge connection structure and the lower door hinge connection structure. During the use process of the refrigerator of the present invention, the left and right sides can always be opened separately, which is more suitable as a vehicle-mounted refrigerator and can meet the needs of users with left- and right-handed habits.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and particularly to a refrigerator door opening structure and a left and right side double-door refrigerator. Background Art

[0002] Refrigerators belong to a kind of household appliances, which are used to store, preserve food, beverages, etc. It reduces the internal temperature through a cycle refrigeration technology to maintain the freshness and quality of the stored items. Currently, most refrigerators on the market are single-door ones. After users purchase a refrigerator, according to the usage environment, mainly the position of the opening space or the habit of using the left or right hand of the user, one side of the door is rotatably installed and the other side is openably installed to achieve a fixed door opening method of left-hand opening or right-hand opening. The deficiencies of the current fixed-direction door opening method are as follows: (1) When there are multiple users, such as multiple family members or multiple employees using it in the company office, once someone has a different habit of using the left or right hand, it is extremely easy to cause inconvenience in opening the door, which is not conducive to use. (2) As a currently popular in-vehicle refrigerator among consumers, after the door opening direction is fixed, it is not conducive to adjusting the position according to the space inside the vehicle. When the opening space is insufficient, it is extremely easy to cause the refrigerator door not to open. Therefore, the currently used single-door refrigerator with a fixed door opening direction is rather inconvenient and needs to be improved. Summary of the Invention

[0003] The purpose of the present invention is to provide a refrigerator door opening structure and a left and right side double-door refrigerator to solve the problems raised in the above background art.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A refrigerator door opening structure, the refrigerator includes a box body and a door body; a door hinge shaft is arranged near the edge of the end face of the door body, and a door support corresponding to the door hinge shaft is arranged on the box body. The door support has a door hinge shaft insertion hole, and the end of the door hinge shaft is movably inserted into the door hinge shaft insertion hole to form a hinge connection structure, so that the door body is movably hinged to the front of the box body; it includes a door hinge shaft structure and a door lock structure;

[0006] The door hinge shaft insertion hole has a notch at the front end of the door support, and the door hinge shaft can leave or return to the door hinge shaft insertion hole through the notch; the notch and the door hinge shaft form a door hinge shaft structure;

[0007] The door lock structure includes a door lock main shaft and a door lock mechanism arranged near the end of the door lock main shaft; the door lock main shaft is rotatably arranged vertically inside the side of the door body, and a handle is arranged on it that movably passes through the side of the door body; the door lock mechanism includes a lock shaft, an arc-shaped guide hole, a lock head, and a link mechanism;

[0008] The arc-shaped guide hole is provided on the end face of the door body and is coaxially arranged with the door hinge shaft. One end of the arc-shaped guide hole has a lock hole communicating with the back of the door body. The lock shaft is fixedly arranged near the hinge shaft insertion hole of the door support, and its end is movably inserted into the arc-shaped guide hole.

[0009] The lock head is movably arranged near the lock hole in the door body. The link mechanism is connected between the end of the door lock main shaft and the lock head. The door lock main shaft can pull the front end of the lock head into the lock hole through the link mechanism to block the lock hole, so that the lock hole is not communicated with the arc-shaped guide hole. Furthermore, the lock shaft is limited in the arc-shaped guide hole by the lock head to lock the door body. The door lock main shaft can push the lock head out of the lock hole through the link mechanism to communicate the lock hole with the arc-shaped guide hole. Furthermore, the door body can leave the lock shaft from the lock hole to unlock the door body.

[0010] Preferably, the link mechanism includes a first link and a second link. The middle of the first link has a first rotating shaft. The first link is rotatably arranged in the door body through the first rotating shaft. One end of the first link is movably connected to the lock head, and the other end has a long strip-shaped guide hole. One end of the second link is fixedly connected to the end of the door lock main shaft, and the other end has a plug and is movably inserted into the long strip-shaped guide hole. When the door lock main shaft rotates, the second link can rotate, and then drive the first link to push the lock head away from the lock hole.

[0011] Preferably, the lock head has a lock head card slot, and the end of the first link is movably inserted into the lock head card slot.

[0012] Preferably, the door lock structure further includes a lock head return spring. The lock head return spring is arranged at the rear end of the lock head. When the door body is in the unlocked state, the lock head exits the lock hole and presses against the lock head return spring to make the lock head return spring contract and store energy. When the door body is in the locked state, the lock head return spring releases force and presses against the rear end of the lock head to make the lock head insert into the lock hole to block the lock hole. Further, the rear end of the lock head has a spring guide post, and the lock head return spring is sleeved on the spring guide post.

[0013] Preferably, a main shaft return torsion spring is sleeved on the door lock main shaft corresponding to the position of the handle. One end of the main shaft return torsion spring abuts against the inside of the door body, and the other end abuts against the handle. Rotating the door lock main shaft by the handle can make the main shaft return torsion spring compressed and store energy. After the main shaft return torsion spring releases force, it can push the handle to make the door lock main shaft rotate and reset.

[0014] Preferably, the door body has a guide groove corresponding to the lock head, and the lock head can move along the guide groove.

[0015] A double-door refrigerator with left and right sides, where there are two symmetrically arranged hinge connection structures at both sides of the top end surfaces of the door body and the box body, serving as the upper hinge connection structures for the two doors. There are also two symmetrically arranged hinge connection structures at both sides of the bottom end surfaces of the door body and the box body, serving as the lower hinge connection structures for the two doors. And each hinge connection structure is correspondingly provided with a door hinge shaft structure;

[0016] The door lock structure includes two symmetrically arranged groups, which are correspondingly arranged between the upper hinge connection structure and the lower hinge connection structure of the door. At the top end of the door lock main shaft in each group of door lock structures, there is a set of door lock mechanisms to lock or unlock the upper hinge connection structure of the door.

[0017] Preferably, at the bottom end of the door lock main shaft in each group of door lock structures, there is another set of door lock mechanisms to lock or unlock the lower hinge connection structure of the door.

[0018] Preferably, the door support in the upper hinge connection structure is a rectangular plate-like structure fixedly connected to the top end of the box body, and the box body is equipped with a box cover that covers the door support.

[0019] The present invention has the following prominent substantial features and remarkable progress:

[0020] 1. In the present invention, refrigerator door opening structures are provided on both sides of the door body. By pressing the handle on the side of the user's dominant hand, the handle can unlock and then open the corresponding side of the door body through the door lock main shaft and the door lock mechanism, so as to adapt to the habits of the user's left and right hands. In addition, during the use of the refrigerator of the present invention, it can always be opened from the left and right sides respectively, which is more suitable as a vehicle-mounted refrigerator to avoid the inability to open the refrigerator door after the interior space of the vehicle changes.

[0021] 2. The present invention is reasonably designed, the connections of all components are firm, and it is easy to assemble. It also has the characteristics of convenient door opening and beneficial to use. Brief Description of the Drawings

[0022] Figure 1 It is a three-dimensional state diagram of the refrigerator of the present invention.

[0023] Figure 2 It is a partial disassembled state diagram of the refrigerator of the present invention.

[0024] Figure 3 It is an overall state schematic diagram of the door lock structure of the present invention.

[0025] Figure 4 It is an installation state schematic diagram of the door lock structure of the present invention.

[0026] Figure 5 It is a partial schematic diagram of the installation state of the door lock structure of the present invention.

[0027] Figure 6Schematic diagram of the refrigerator of the present invention in the left - hand door - opening state.

[0028] Figure 7 Schematic diagram of the unlocking state of the refrigerator door - opening structure on the left side of the refrigerator of the present invention.

[0029] Figure 8 Schematic diagram of the unlocking state of the door - lock mechanism of the present invention (corresponding to the upper and lower two door - lock mechanisms located on the left side of the door body respectively).

[0030] Figure 9 Schematic diagram of the locked state of the door - lock mechanism of the present invention (corresponding to the upper and lower two door - lock mechanisms located on the right side of the door body respectively).

[0031] Figure 10 Schematic diagram of the door support structure of the door hinge connection structure of the present invention. Detailed implementation manners

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] Embodiment

[0034] Please refer to Figures 1-10 , the present invention provides a technical solution:

[0035] A refrigerator door - opening structure, the refrigerator includes a box body 1 and a door body 2. A door hinge shaft 21 is arranged near the edge of the end face of the door body 2. A door support 11 corresponding to the door hinge shaft 21 is arranged on the box body 1. The door support 11 has a door hinge shaft insertion hole 10. The end of the door hinge shaft 21 is movably inserted into the door hinge shaft insertion hole 10 to form a hinge connection structure, so that the door body 2 is movably hinge - connected to the front of the box body 1.

[0036] The refrigerator door - opening structure includes a door hinge shaft structure and a door - lock structure. Among them, the door hinge shaft insertion hole 10 has a notch 101 at the front end of the door support 11. The door hinge shaft 21 can leave the door hinge shaft insertion hole 10 or return to the door hinge shaft insertion hole 10 from the notch 101. At the same time, the notch 101 and the door hinge shaft 21 form the door hinge shaft structure. The door support 11 is used to stably connect and support the door body 2 without affecting the normal opening and closing rotation.

[0037] Specifically refer to Figure 3 , the door - lock structure includes a door - lock main shaft 3 and a door - lock mechanism arranged near the end of the door - lock main shaft 3.

[0038] The door lock main shaft 3 is rotatably arranged vertically inside the side part of the door body 2, and a handle 30 that passes through the side surface of the door body 2 is provided thereon. The door lock mechanism includes a lock shaft 4, an arc-shaped guide hole 40, a lock head 5 and a connecting rod mechanism. At the same time, the arc-shaped guide hole 40 is arranged on the end surface of the door body 2 and is coaxially arranged with the door hinge shaft 21. One end of the arc-shaped guide hole 40 has a lock hole 41 that communicates with the back surface of the door body 2. The lock shaft 4 is fixedly arranged near the door hinge shaft insertion hole 10 on the door support 11, and its end is movably inserted into the arc-shaped guide hole 40. At the same time, a main shaft return torsion spring 31 is sleeved on the door lock main shaft 3 corresponding to the position of the handle 30. One end of the main shaft return torsion spring 31 abuts against the inside of the door body 2, and the other end abuts against the handle 30. Rotating the door lock main shaft 3 by the handle 30 can compress and store energy in the main shaft return torsion spring 31. After the main shaft return torsion spring 31 releases force, it can push the handle 30 to rotate the door lock main shaft 3 back to its original position, which is convenient for the handle 30 to drive the connecting rod mechanism to rotate and be used.

[0039] The lock head 5 is movably arranged near the lock hole 41 inside the door body 2. The connecting rod mechanism is connected between the end of the door lock main shaft 3 and the lock head 5. The door lock main shaft 3 can pull the front end of the lock head 5 into the lock hole 41 through the connecting rod mechanism to block the lock hole 41 and make the lock hole 41 not communicate with the arc-shaped guide hole 40. Furthermore, the lock shaft 4 is limited in the arc-shaped guide hole 40 by the lock head 5 to lock the door body 2. The connecting rod mechanism is arranged between the end of the door lock main shaft 3 and the lock head 5. The door lock main shaft 3 can push the lock head 5 out of the lock hole 41 through the connecting rod mechanism to make the lock hole 41 communicate with the arc-shaped guide hole 40. Furthermore, the door body 2 can leave the lock shaft 4 from the lock hole 41 to unlock the door body 2.

[0040] At the same time, the door body 2 has a guide groove 51 corresponding to the lock head 5. The lock head 5 can move along the guide groove 51, and the rear end of the lock head 5 has a spring guide post 71. The lock head return spring 7 is sleeved on the spring guide post 71, which is convenient for the lock head 5 to move in a fixed direction along the guide groove 51 and quickly reset. When the door body 2 is in the unlocked state, the lock head 5 exits the lock hole 41 and presses against the lock head return spring 7 to make the lock head return spring 7 contract and store energy. When the door body 2 is in the locked state, the lock head return spring 7 releases force and presses against the rear end of the lock head 5 to make the lock head 5 insert into the lock hole 41 to block the lock hole 41. The lock head 5 is reset from its rear end by the lock head return spring 7 to play a role in quickly locking and resetting the door lock mechanism.

[0041] In this embodiment, the specific structure of the link mechanism is as follows: The link mechanism includes a first link 61 and a second link 62. The middle of the first link 61 has a first rotating shaft 60. The first link 61 is rotatably arranged in the door body 2 through the first rotating shaft 60. In this embodiment, the first link 60 is of an L-shaped structure or can also be an arc-shaped structure (not shown in the figure). One end of the first link 61 is movably connected to the lock head 5, and the other end has a long strip-shaped guide hole 610. One end of the second link 62 is fixedly connected to the end of the door lock main shaft 3, and the other end has a plug 620 and is movably inserted into the long strip-shaped guide hole 610. When the door lock main shaft 3 rotates, the second link 62 can be rotated, and then the first link 61 is driven to push the lock head 5 away from the lock hole 41.

[0042] Furthermore, the lock head 5 has a lock head slot 50, and the end of the first link 61 is movably inserted into the lock head slot 50. In the above structure, the lock head slot 50 is used to cooperate with the first link 61 to movably connect with the lock head 5, and at the same time, it is convenient for the first link 61 to push and pull the lock head 5.

[0043] A left-right double-door refrigerator adopts the above-mentioned refrigerator door opening structure. There are 2 hinge connection structures symmetrically arranged on both sides of the top end faces of the door body 2 and the box body 1 as the upper hinge connection structures of the two doors. There are also 2 hinge connection structures symmetrically arranged on both sides of the bottom end faces of the door body 2 and the box body 1 as the lower hinge connection structures of the two doors, and each hinge connection structure is correspondingly provided with a door hinge shaft structure.

[0044] The door lock structure includes 2 groups symmetrically arranged, which are correspondingly arranged between the upper hinge connection structure and the lower hinge connection structure. In each group of door lock structures, there is a set of door lock mechanisms provided at the top end of the door lock main shaft 3 to lock or unlock the upper hinge connection structure. At the same time, in each group of door lock structures, there is another set of door lock mechanisms provided at the bottom end of the door lock main shaft 3 to lock or unlock the lower hinge connection structure.

[0045] Specific reference Figure 2 and Figure 10 , in the upper hinge connection structure, the door support 11 is a rectangular plate-like structure fixedly connected to the top end of the box body 1. The box body 1 is provided with a box cover 12 that shields the door support 11, so that the door support 11 can be protected and used, and the aesthetics of the device is further improved. In the lower hinge connection structure, the door support 11 is a long strip-shaped plate-like structure horizontally arranged on the front surface of the box body 1, and it is correspondingly provided with a door hinge shaft insertion hole 10 and a notch 101.

[0046] Specific reference Figures 7 to 9 The working principle of the present invention is as follows:

[0047] When it is necessary to open the refrigerator door, the door lock main shaft 3 is rotated by pressing the handle 30 on one side of the door body 2. In this embodiment, specifically, the left handle 30 is pressed. Second connecting rods 62 are fixedly installed at both ends of the door lock main shaft 3. The other end of the second connecting rod 62 is movably connected to the long strip-shaped guide hole 610 through a plug 620. The long strip-shaped guide hole 610 is provided on the first connecting rod 61, and a first rotating shaft 60 is fixedly installed at one end of the first connecting rod 61, facilitating the rotation of the first connecting rod 61 driven by the door lock main shaft 3, thereby pushing the lock head 5 out of the lock hole 41 and making the left-side door opening structure of the door body 2 in an unlocked state. In this unlocked state, the door body 2 leaves the lock shaft 4 from the lock hole 41, unlocking the left-side door opening structure of the door body 2. The left door hinge shaft 21 cooperates to leave the door hinge shaft socket 10 from the notch 101. The user can continue to press the left handle 30 to open the door body 2 from the left side. At the same time, the right door hinge shaft 21 rotates self-driven so that the door body 2 can be opened at a certain angle, and the right lock shaft 4 rotates along the arc-shaped guide hole 4 to cooperate with the self-rotation of the door hinge shaft 21.

[0048] After the door body 2 is opened from the left side, the user releases the left handle 30, and the left-side door opening structure quickly automatically resets under the action of the main shaft return torsion spring 31 and the lock head return spring 7.

[0049] When it is necessary to close the door body 2, the left side of the door body 2 can be directly pushed gently until the left lock shaft 4 hits the front end of the lock head 5, and the lock head 5 is automatically pushed out of the lock hole 41 due to the impact. At the same time, the arc-shaped guide hole 40 resets from the opened lock hole 41. Or, the user can also press the left handle 30 again to open the lock hole 41. After the door body 2 is closed, the lock shaft 4 resets to the locked state limited in the arc-shaped guide hole 40, and the left door hinge shaft 21 returns from the notch 101 to the door hinge shaft socket 10.

Claims

1. A refrigerator door opening structure, the refrigerator comprising a cabinet (1) and a door body (2); a door hinge shaft (21) is arranged near the edge of the end face of the door body (2), and a door support (11) corresponding to the door hinge shaft (21) is arranged on the cabinet (1). The door support (11) has a door hinge shaft insertion hole (10), and the end of the door hinge shaft (21) is movably inserted into the door hinge shaft insertion hole (10) to form a hinge connection structure, so that the door body (2) is movably hinged to the front of the cabinet (1). It is characterized in that: It includes a door hinge shaft structure and a door lock structure; The door hinge shaft insertion hole (10) has a notch (101) at the front end of the door support (11), and the door hinge shaft (21) can leave or return to the door hinge shaft insertion hole (10) through the notch (101); the notch (101) and the door hinge shaft (21) form a door hinge shaft structure; The door lock structure includes a door lock main shaft (3) and a door lock mechanism arranged near the end of the door lock main shaft (3); the door lock main shaft (3) is rotatably arranged vertically inside the side of the door body (2), and a handle (30) that passes through the side of the door body (2) is arranged thereon; the door lock mechanism includes a lock shaft (4), an arc-shaped guide hole (40), a lock head (5) and a linkage mechanism; The arc-shaped guide hole (40) is arranged on the end face of the door body (2) and is coaxially arranged with the door hinge shaft (21). One end of the arc-shaped guide hole (40) has a lock hole (41) communicating with the back of the door body (2), and the lock shaft (4) is fixedly arranged on the door support (11) near the door hinge shaft insertion hole (10), and its end is movably inserted into the arc-shaped guide hole (40); The lock head (5) is movably arranged inside the door body (2) near the lock hole (41), and the linkage mechanism is connected between the end of the door lock main shaft (3) and the lock head (5). The door lock main shaft (3) can pull the front end of the lock head (5) into the lock hole (41) through the linkage mechanism to block the lock hole (41), so that the lock hole (41) is not communicated with the arc-shaped guide hole (40), and further limit the lock shaft (4) in the arc-shaped guide hole (40) through the lock head (5) to lock the door body (2); the door lock main shaft (3) can push the lock head (5) out of the lock hole (41) through the linkage mechanism to make the lock hole (41) communicate with the arc-shaped guide hole (40), and further realize that the door body (2) can leave the lock shaft (4) through the lock hole (41) to unlock the door body (2); The link mechanism includes a first link (61) and a second link (62). The middle of the first link (61) has a first rotating shaft (60). The first link (61) is rotatably arranged in the door body (2) through the first rotating shaft (60). One end of the first link (61) is movably connected to the lock head (5), and the other end has a long strip-shaped guide hole (610). One end of the second link (62) is fixedly connected to the end of the door lock main shaft (3), and the other end has a plug (620) which is movably inserted into the long strip-shaped guide hole (610). When the door lock main shaft (3) rotates, the second link (62) can be rotated, and then the first link (61) is driven to push the lock head (5) away from the lock hole (41). The lock head (5) has a lock head slot (50), and the end of the first link (61) is movably inserted into the lock head slot (50). The door lock structure further includes a lock head return spring (7). The lock head return spring (7) is arranged at the rear end of the lock head (5). When the door body (2) is in the unlocked state, the lock head (5) withdraws from the lock hole (41) and presses against the lock head return spring (7) to make the lock head return spring (7) contract and store energy. When the door body (2) is in the locked state, the lock head return spring (7) releases force and presses against the rear end of the lock head (5) to make the lock head (5) insert into the lock hole (41) to block the lock hole (41).

2. A refrigerator door opening structure according to claim 1, characterized in that: The rear end of the lock head (5) has a spring guide post (71), and the lock head return spring (7) is sleeved on the spring guide post (71).

3. A refrigerator door opening structure according to claim 1 or 2, characterized in that: A main shaft return torsion spring (31) is sleeved on the door lock main shaft (3) corresponding to the position of the handle (30). One end of the main shaft return torsion spring (31) abuts against the inside of the door body (2), and the other end abuts against the handle (30). When the handle (30) rotates the door lock main shaft (3), the main shaft return torsion spring (31) can be compressed and store energy. After the main shaft return torsion spring (31) releases force, it can push the handle (30) to make the door lock main shaft (3) rotate and reset.

4. A refrigerator door opening structure according to claim 1 or 2, characterized in that: The door body (2) has a guide groove (51) corresponding to the lock head (5), and the lock head (5) can move along the guide groove.

5. A left-right side double-door refrigerator, characterized in that: It adopts the refrigerator door opening structure described in claim 1 or 2. There are 2 hinge connection structures symmetrically arranged on both sides of the top end surface of the door body (2) and the box body (1) as the upper hinge connection structures of the two doors. There are also 2 hinge connection structures symmetrically arranged on both sides of the bottom end surface of the door body (2) and the box body (1) as the lower hinge connection structures of the two doors, and each hinge connection structure is correspondingly provided with a door hinge shaft structure; the door lock structure includes 2 groups symmetrically arranged, which are correspondingly arranged between the upper hinge connection structure and the lower hinge connection structure of the door. In each group of door lock structures, 1 set of door lock mechanisms is provided at the top end of the door lock main shaft (3) to lock or unlock the upper hinge connection structure of the door.

6. A left and right side double - door refrigerator according to claim 5, characterized in that: at the bottom end of the door lock main shaft (3) in each set of door lock structures, there is another set of door lock mechanisms to lock or unlock the lower hinge connection structure of the door.

7. A left and right side double - door refrigerator according to claim 5, characterized in that: the door support (11) in the upper hinge connection structure of the door is a rectangular plate - like structure fixedly connected to the top end of the box body (1), and the box body (1) is provided with a box cover (12) that shields the door support (11).

Images