Multifunctional integrated hidden lock catch of refrigerator foaming door

Abstract

The invention relates to the technical field of lock catches, and discloses a refrigerator foaming door multifunctional integrated hidden lock catch which comprises a lock catch movable part installed on a refrigerator door body and a lock catch fixed part installed on a refrigerator main body, the lock catch movable part comprises a closed box, and the closed box is installed in the refrigerator door body; the side facing the lock catch fixing piece and the front face of the closed box are flush with the surface of the refrigerator door body, the lock catch fixing piece is installed in the refrigerator body, and a panel is arranged on the front face of the closed box. The lock catch moving part is installed in the refrigerator door body in an embedded mode, the lock catch is installed in a hidden mode, the attractiveness is improved, the lock catch locking position is designed in a closed mode through cooperation of the closed box and the panel of the lock catch moving part, the situation that a foaming material of the refrigerator door body influences the lock catch structure can be avoided, the hidden box is further arranged on the lock catch moving part, and the lock catch moving part is more attractive. Functions of the padlock and the handle are integrally arranged, functionality is enhanced, and the door body is more convenient to open while the sealing degree of the refrigerator door body is improved through the padlock.

Description

Technical Field

[0001] The present invention relates to the technical field of lock buckles, and more specifically to a multifunctional integrated concealed lock buckle for a refrigerator foam door. Background Art

[0002] A refrigerator is a household appliance whose main function is to store food and other items and keep them fresh and refrigerated through refrigeration technology. A refrigerator door usually adopts a foam door, which means that in the refrigerator door structure, the door part is made of a foaming process. The foaming layer provides good thermal insulation for the refrigerator door, helps to reduce heat exchange inside and outside the refrigerator, and improves the energy efficiency of the refrigerator. However, problems arise in the use of the refrigerator door. For example, the door is prone to rebound when closed, resulting in the door being unable to be completely closed. The traditional practice is to install a door closer to assist in closing the door to prevent the door from rebounding. However, problems are found in the use experience. Although the installation of a door closer can prevent the door from rebounding to a certain extent, it cannot ensure the tightness between the door and the refrigerator body, that is, the door and the refrigerator are not tightly enough, which affects the sealing of the door and reduces the insulation effect. In response to this, refrigerator door locks appear on the market, and the tightness between the door and the refrigerator body is strengthened by installing locks.

[0003] However, the traditional lock buckle protrudes from the surface of the door body, affecting the overall aesthetics, and the refrigerator door needs to be unlocked when it is opened, which causes inconvenience in the door opening action and affects the user experience. Summary of the invention

[0004] In order to overcome the above defects of the prior art, the present invention provides a multifunctional integrated concealed lock for a refrigerator foam door to solve the problems of lack of aesthetics and inconvenience in opening the door caused by the traditional refrigerator door with a lock in the above background technology.

[0005] The present invention provides the following technical solutions: a multifunctional integrated concealed lock for a refrigerator foam door, comprising a lock movable part installed on the refrigerator door body and a lock fixing part installed on the refrigerator main body, the lock movable part comprising a closing box, the closing box is installed inside the refrigerator door body, and one side and the front side facing the lock fixing part are flush with the surface of the refrigerator door body, the lock fixing part is installed inside the refrigerator main body, a panel is arranged on the front side of the closing box, a rotary control shaft core and a dark box extending to the inside of the closing box are arranged on the front side of the panel, a lock hook is fixedly connected to the output shaft of the rotary control shaft core, a strip groove is opened on one side of the closing box, the lock hook passes through the strip groove and cooperates with the lock fixing part, and the rotary control shaft core is used to control the flipping of the lock hook; A reversing transmission mechanism is also arranged inside the closed box, wherein the control end of the reversing transmission mechanism is arranged inside the dark box, and the moving direction of the control end is the same as the force direction of opening the refrigerator door, and the output end of the reversing transmission mechanism is connected to the lock hook, and the reversing transmission mechanism is used to control the flipping of the lock hook.

[0006] Furthermore, the reversing transmission mechanism includes a rotating shaft and a support rod, and end blocks are rotatably sleeved at the upper and lower ends of the rotating shaft, and the two end blocks are fixedly connected at the back of the dark box, and the side wall of the rotating shaft is fixedly connected with a lever and an arm plate, and the inner wall of the dark box is provided with a transverse through groove that penetrates to the back, and the lever enters the interior of the dark box through the transverse through groove and is connected to a pressure plate, and a slide rail is provided on the arm plate, and a sliding block is slidably sleeved in the slide rail, and connecting seats are rotatably sleeved at both ends of the support rod, one connecting seat is fixedly connected to the bottom of the lock hook, and the other connecting seat is rotatably sleeved on the top of the sliding block through a knob, and the support rod is in an inclined state when the lock hook is in a docking state with the lock fastener.

[0007] Furthermore, the panel includes a main body plate, and the main body plate is fixedly connected to an insertion frame on one side facing the closed box. The insertion frame is inserted into the closed box, and positioning slides are provided on the top and bottom of the insertion frame. Inner blocks are provided on the top and bottom of the inner walls of the closed box, and positioning grooves are provided on the inner walls of the two inner blocks. The two positioning slides are slidably sleeved in the positioning grooves on the two inner blocks.

[0008] Furthermore, an embedding block is arranged on one side of the main body plate facing the closing box, and an embedding groove which fits with the embedding block is arranged on the closing box.

[0009] Furthermore, the rotary control shaft core includes a cylinder shell, which is fixedly connected to the panel, and a main shaft core is rotatably sleeved in the inner cavity of the cylinder shell. One end of the main shaft core extends to the front of the panel for controlling rotation, and the other end extends to the inside of the closed box for connecting a lock hook. A cylindrical block is fixedly connected to the side wall of the main shaft core, and a positioning slider is fixedly connected to the side wall of the cylindrical block. An annular groove is opened on the inner wall of the cylinder shell, and the positioning slider is movably sleeved in the annular groove. One end of the cylindrical block is transmission-connected to the inner wall of the cylinder shell through a torsion spring.

[0010] Furthermore, the support rod is composed of an outer tube and an inner column, and the outer tube is slidably sleeved inside the inner column.

[0011] Furthermore, the side wall of the outer tube is provided with an air hole penetrating to the inner cavity of the outer tube, and the air hole is arranged at the bottom of the inner column.

[0012] Furthermore, the lock fixing component includes a U-shaped plate, a flip plate is arranged inside the U-shaped plate, the flip plate is rotatably sleeved on the inner wall of the U-shaped plate through a swivel column, one end of the swivel column is transmission connected to the inner wall of the U-shaped plate through a torsion spring, the inner wall of the U-shaped plate is fixedly connected to a limit plate, the limit plate is abutted against one side of the flip plate, the limit plate is used to limit the counterclockwise flipping of the flip plate, and the lock hook is set to a slope facing the flip plate.

[0013] Furthermore, the reversing transmission mechanism is connected to an oil filling mechanism, which is composed of an oil tank and an oil pumping and draining mechanism. The oil tank is used to store liquid lubricating oil and has a recovery space inside. The oil pumping and draining mechanism is installed on the top of the oil tank and is linked with the arm plate. The oil inlet of the oil pumping and draining mechanism is connected to the inside of the oil tank through an oil pipe a, and the oil discharge port of the oil pumping and draining mechanism is connected to the inside of the rotary control shaft core through an oil pipe b. The arm plate angle flipping is used to control the operation of the oil pumping and draining mechanism, and the inside of the rotary control shaft core is connected to the recovery space inside the oil tank through an oil pipe c.

[0014] Furthermore, the oil extraction and discharge mechanism includes a sealing barrel, a core rod is slidably sleeved inside the sealing barrel, the top of the core rod extends to the outside of the sealing barrel, the bottom end of the sealing barrel and the top of the core rod are movably sleeved with a connecting head through a spherical joint, the two connecting heads are respectively fixedly connected to the top of the oil tank at the bottom of the arm plate, and the side wall of the sealing barrel is provided with a one-way oil inlet pipe port and a one-way oil discharge pipe port, the one-way oil inlet pipe port is connected to the oil pipe a, and the one-way oil discharge pipe port is connected to the oil pipe b.

[0015] Technical effects and advantages of the present invention: The present invention embeds and installs the lock buckle movable part in the refrigerator door body, so that the lock buckle is concealedly installed to improve the aesthetics, and the locking position of the lock buckle adopts a closed design through the cooperation of the closing box and the panel of the lock buckle movable part, which can avoid the influence of the foam material of the refrigerator door body on the lock buckle structure, and a dark box is arranged on the lock buckle movable part, so that the lock buckle and the handle function are integrated to enhance the functionality, and the sealing degree of the refrigerator door body is improved by the lock buckle, and the door body is opened more conveniently; The lock catch realizes the locking effect by hooking and hanging with the lock hook and the lock catch fixing piece, and realizes the unlocking operation by controlling the rotation of the lock hook through the rotary control shaft core. On this basis, a reversing transmission mechanism is provided to be linked with the lock hook, and the reversing transmission mechanism structure is associated with the dark box, so that the reversing transmission mechanism can be triggered when the dark box is pulled to open the door, thereby achieving the unlocking effect, eliminating the step of controlling the unlocking by the rotary control shaft core, optimizing the unlocking steps of the traditional lock catch, and making the door opening action simpler and faster; On the basis of the above, an oil tank and an oil pumping and draining mechanism are also provided. When unlocking is performed through the reversing transmission mechanism, a linkage relationship can be generated with the oil pumping and draining mechanism. By extracting the lubricating oil inside the oil tank and lubricating the inside of the rotary control shaft core, the friction resistance of the rotary control shaft core during operation is effectively reduced, making the unlocking action smoother. In addition, through the structural setting of the lock movable part, the lock hook can not only cooperate with the lock fixing part to achieve the locking effect, but also have a fixing effect on the closed box and the panel connection. On the one hand, it reduces the use of spare parts (screws and bolts) during installation, and on the other hand, it makes the panel disassembly more convenient and quick, and facilitates the maintenance and replacement of the internal mechanism of the lock movable part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the overall structure of the present invention; Figure 2 This is a schematic diagram of the installation position of the present invention on a refrigerator; Figure 3 It is an exploded schematic diagram of the overall structure of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the reversing transmission mechanism structure; Figure 5 For the present invention Figure 3 Schematic diagram of the closed box and panel cross-section structure; Figure 6 For the present invention Figure 3 Schematic diagram of the rotary control shaft core structure; Figure 7 For the present invention Figure 4 Schematic diagram of the support rod structure; Figure 8 For the present invention Figure 1 A schematic diagram of a cross-sectional structure of a locking fastener in FIG. Fig. 9 For the present invention Figure 3 Schematic diagram of the internal parts structure of the closed box; Fig.10 For the present invention Fig. 9 Schematic diagram of the oil pumping and discharge mechanism structure.

[0017] The accompanying drawings are marked as follows: 1, locking movable part; 2, locking fixed part; 11, closing box; 12, panel; 13, rotary control shaft core; 14, dark box; 15, lock hook; 16, strip groove; 17, reversing transmission mechanism; 171, rotating shaft; 172, end block; 173, lever; 174, pressing plate; 175, arm plate; 176, sliding block; 177, knob; 178, connecting seat; 179, supporting rod; 111, inner block; 121, main body plate; 122, insert frame; 123, embedded block; 124, fixed Positioning slide bar; 131, cylinder shell; 132, main shaft core; 133, cylindrical block; 134, torsion spring one; 135, positioning slide block; 1791, outer cylinder; 1792, inner column; 1793, air hole; 21, U-shaped plate; 22, flip plate; 23, rotary column; 24, torsion spring two; 25, limit plate; 18, oil tank; 19, oil extraction and discharge mechanism; 191, sealing barrel; 192, core rod; 193, ball joint; 194, connector; 195, one-way oil inlet pipe port; 196, one-way oil discharge pipe port. DETAILED DESCRIPTION

[0018] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0019] Reference Figure 1-Figure 3The present invention provides a multifunctional integrated concealed lock for a refrigerator foam door, comprising a lock movable part 1 installed on the refrigerator door body and a lock fixing part 2 installed on the refrigerator body, characterized in that: the lock movable part 1 comprises a closing box 11, the closing box 11 is installed inside the refrigerator door body, and the side facing the lock fixing part 2 and the front side are flush with the surface of the refrigerator door body, the lock fixing part 2 is installed inside the refrigerator body, a panel 12 is arranged on the front side of the closing box 11, and a rotary control shaft core 1 extending to the inside of the closing box 11 is arranged on the front side of the panel 12 3. A dark box 14, a lock hook 15 is fixedly connected to the output shaft of the rotary control shaft core 13, a groove 16 is opened on one side of the closed box 11, the lock hook 15 passes through the groove 16 and cooperates with the lock fixing member 2, and the rotary control shaft core 13 is used to control the flipping of the lock hook 15; a reversing transmission mechanism 17 is also arranged inside the closed box 11, and the control end of the reversing transmission mechanism 17 is arranged inside the dark box 14, and the moving direction of the control end is the same as the force direction of opening the refrigerator door, the output end of the reversing transmission mechanism 17 is connected to the lock hook 15, and the reversing transmission mechanism 17 is used to control the flipping of the lock hook 15.

[0020] The sealing box 11 has an isolating effect on the parts that need to be moved, such as the rotary control shaft core 13, the lock hook 15, and the reversing transmission mechanism 17, so as to prevent the heat preservation foam material in the refrigerator door body from affecting the movement of the parts. The installation position setting of the lock movable part 1 and the lock fixing part 2 can prevent the structure from protruding in the refrigerator and improve the aesthetics. When in use, the lock hook 15 can be hooked on the lock fixing part 2 to achieve the locking effect. The unlocking operation can be controlled by the rotary control shaft core 13 to flip the lock hook 15 so that the lock hook 15 is separated from the lock fixing part 2 to unlock. Another way is to insert a finger into the dark box 14 and pull it to apply a force to open the door of the refrigerator. The reversing transmission mechanism 17 is triggered by this force. The reversing transmission mechanism 17 can also drive the lock hook 15 to flip and unlock. That is, the lock can synchronize the door opening action with the unlocking action, optimize the unlocking action, and make the lock more convenient to use. The dark box 14 can achieve the handle effect, so that the refrigerator door can be opened better, and the lock and handle functions are integrated.

[0021] Reference Figure 4The reversing transmission mechanism 17 includes a rotating shaft 171 and a support rod 179. The upper and lower ends of the rotating shaft 171 are rotatably sleeved with end blocks 172. The two end blocks 172 are fixedly connected to the back of the dark box 14. The side wall of the rotating shaft 171 is fixedly connected with a lever 173 and an arm plate 175. The inner wall of the dark box 14 is provided with a horizontal through groove that runs through the back. The lever 173 enters the interior of the dark box 14 through the horizontal through groove and is connected with a pressing plate 174. A slide rail is provided on the arm plate 175, and a sliding block 176 is slidably sleeved in the slide rail. Both ends of the support rod 179 are rotatably sleeved with connecting seats 178. One connecting seat 178 is fixedly connected to the bottom of the lock hook 15, and the other connecting seat 178 is rotatably sleeved on the top of the sliding block 176 through a knob 177. When the lock hook 15 is docked with the lock fixing member 2, the support rod 179 is in an inclined state.

[0022] When in use, insert a finger into the dark box 14 and contact the pressure plate 174. Since the movement direction of the control end of the reversing transmission mechanism 17 is the same as the opening direction of the refrigerator door, the pressure plate 174 is forced to move when the door is opened, and the rotating shaft 171 is rotated under the connection of the lever 173. At this time, the rotating shaft 171 drives the arm plate 175 to change its angle, thereby achieving the flipping of the support rod 179, so that it approaches the vertical state from the inclined state. Since the horizontal height of the bottom end of the support rod 179 is limited by the arm plate 175, the top end of the support rod 179 is gradually raised, driving the lock hook 15 to flip and disconnect from the lock fixing member 2, thereby achieving the synchronization effect of the door opening action and the unlocking action.

[0023] Reference Figure 5 The panel 12 includes a main body plate 121, and an insertion frame 122 is fixedly connected to the main body plate 121 on one side facing the closed box 11. The insertion frame 122 is inserted into the closed box 11, and positioning slides 124 are provided at the top and bottom of the insertion frame 122. The top and bottom of the inner wall of the closed box 11 are both provided with inner blocks 111, and the inner walls of the two inner blocks 111 are both provided with positioning grooves, and the two positioning slides 124 are slidably sleeved in the positioning grooves on the two inner blocks 111.

[0024] The traditional way of installing the panel 12 on the closed box 11 is to connect it through spare parts such as screws or bolts. However, this method will cause inconvenience in disassembly and maintenance. Therefore, the structure is improved, and the panel 12 is inserted into the closed box 11 by inserting the frame 122 into the closed box 11 to limit the movement direction of the panel 12. At this time, the panel 12 can only move forward and backward. Since the locking hook 15 passes through the groove 16, the forward and backward movement direction of the panel 12 is restricted, thereby achieving the effect of connecting the panel 12 to the closed box 11. During disassembly, the locking hook 15 is controlled by the rotary control shaft core 13 to flip the locking hook 15 at a large angle so that the locking hook 15 is flipped into the closed box 11. At this time, the forward and backward movement direction of the panel 12 is contact-restricted to achieve a quick disassembly effect. The positioning slide bar 124 cooperates with the positioning slide groove on the inner block 111 to improve the stability of the panel 12 inside the closed box 11 and avoid shaking.

[0025] Reference Figure 5 A block 123 is disposed on the side of the main body plate 121 facing the closing box 11 , and a groove that fits with the block 123 is disposed on the closing box 11 .

[0026] When the panel 12 is fixed to the closing box 11 by the locking hook 15, the locking hook 15 and the force of the panel 12 to separate outward (the force of the panel 12 separating from the closing box 11 to the outside) counteract each other, which may easily cause a turning resistance to the locking hook 15. To avoid this situation, an embedding block 123 is provided to cooperate with the embedding groove. Under normal use, the friction resistance of the embedding block 123 in the embedding groove counteracts the force of the panel 12 to separate outward. At this time, the locking hook 15 is not subjected to force, which prevents the turning of the locking hook 15 from being affected. When the force of the panel 12 to separate outward is too large under the influence of external force, the locking hook 15 counteracts and prevents the panel 12 from falling off.

[0027] Reference Figure 6 The rotary control shaft core 13 includes a cylinder shell 131, which is fixedly connected to the panel 12. A main shaft core 132 is rotatably sleeved in the inner cavity of the cylinder shell 131. One end of the main shaft core 132 extends to the front of the panel 12 for controlling the rotation, and the other end extends to the inside of the closed box 11 for connecting the lock hook 15. A cylindrical block 133 is fixedly connected to the side wall of the main shaft core 132. A positioning slider 135 is fixedly connected to the side wall of the cylindrical block 133. An annular groove is opened on the inner wall of the cylinder shell 131. The positioning slider 135 is movably sleeved in the annular groove. One end of the cylindrical block 133 is transmission-connected to the inner wall of the cylinder shell 131 through a torsion spring 134.

[0028] Since the lock hook 15 has a connecting function for the closure box 11 and the panel 12, the rotary control shaft core 13 will be subjected to a pulling force, causing the main shaft core 132 to easily slide inside the cylinder shell 131. By setting a positioning slider 135 in cooperation with the annular slide groove, the axial positioning effect of the main shaft core 132 is achieved, and the tensile strength of the rotary control shaft core 13 is improved. In addition, after controlling the lock hook 15 to flip and unlock, it is necessary to manually control the lock hook 15 to flip and reset for locking, which makes the operation steps complicated and inconvenient. By setting a torsion spring 134, the main shaft core 132 can be automatically driven to rotate and reset, thereby controlling the lock hook 15 to automatically flip and lock, thereby further improving convenience.

[0029] Reference Figure 7 The support rod 179 is composed of an outer tube 1791 and an inner column 1792, and the outer tube 1791 is slidably sleeved inside the inner column 1792.

[0030] When the flipping angle of the lock hook 15 controlled by the rotary control shaft core 13 is too large, the reversing transmission mechanism 17 may restrict the flipping of the lock hook 15. To avoid this situation, the support rod 179 is set to be telescopic. When the flipping angle of the lock hook 15 is too large, the length of the support rod 179 is extended, thereby avoiding the reversing transmission mechanism 17 from restricting the lock hook 15, so that the device can operate normally.

[0031] Reference Figure 7 The side wall of the outer tube 1791 is provided with an air hole 1793 penetrating into the inner cavity of the outer tube 1791 , and the air hole 1793 is arranged at the bottom of the inner column 1792 .

[0032] By providing the air hole 1793, the pressure inside the outer tube 1791 can be released, so that the air pressure resistance when the support rod 179 is extended and retracted can be reduced.

[0033] Reference Figure 8 The lock fixing member 2 includes a U-shaped plate 21, and a flip plate 22 is arranged inside the U-shaped plate 21. The flip plate 22 is rotatably sleeved on the inner wall of the U-shaped plate 21 through a rotating column 23. One end of the rotating column 23 is transmission-connected to the inner wall of the U-shaped plate 21 through a torsion spring 24. A limiting plate 25 is fixedly connected to the inner wall of the U-shaped plate 21. The limiting plate 25 is in contact with one side of the flip plate 22. The limiting plate 25 is used to limit the flip plate 22 from flipping counterclockwise. The lock hook 15 is set to a slope facing the flip plate 22.

[0034] When the lock buckle is in use, it is necessary to control the lock hook 15 to flip and lift up through the rotary control shaft core 13 or the reversing transmission mechanism 17 during the locking process, and then it can form a hooking effect with the lock buckle fixing piece 2, which is inconvenient. By setting one side of the lock hook 15 as a slope, when the slope of the lock hook 15 contacts the flip plate 22, the lock hook 15 can form an upward flipping force under the influence of the slope, thereby achieving an automatic fastening effect between the lock hook 15 and the lock buckle fixing piece 2, making the lock buckle more convenient to use. In addition, since the lock buckle is used on a refrigerator, it may not be unlocked. When the lock is operated and the door is opened, the lock fixing member 2 and the lock hook 15 will be directly subjected to a large pulling force, which may easily cause damage to the parts. To avoid this situation, the flip plate 22 is set to be flip-type and cooperate with the lock hook 15. When the lock fixing member 2 and the lock hook 15 are subjected to a large pulling force, the flip plate 22 flips clockwise and disengages from the lock hook 15 to achieve a forced unlocking effect. By setting a torsion spring 24, the flip plate 22 is flipped and disengaged when subjected to a large force, thereby preventing the connection between the lock hook 15 and the lock fixing member 2 from being too loose.

[0035] Reference Fig. 9The reversing transmission mechanism 17 is connected to an oil filling mechanism, which is composed of an oil tank 18 and an oil pumping and draining mechanism 19. The oil tank 18 is used to store liquid lubricating oil, and a recovery space is set inside. The oil pumping and draining mechanism 19 is installed on the top of the oil tank 18 and linked with the arm plate 175. The oil inlet of the oil pumping and draining mechanism 19 is connected to the inside of the oil tank 18 through the oil pipe a, and the oil outlet of the oil pumping and draining mechanism 19 is connected to the inside of the rotary control shaft core 13 through the oil pipe b. The angle of the arm plate 175 is flipped to control the operation of the oil pumping and draining mechanism 19, and the inside of the rotary control shaft core 13 is connected to the recovery space inside the oil tank 18 through the oil pipe c.

[0036] When the buckle lock is unlocked or locked, the rotary control shaft core 13 needs to rotate. When the friction inside the rotary control shaft core 13 is too large, it is easy to affect the smoothness of the buckle lock. By setting an oil extraction mechanism 19 and an arm plate 175 to work in conjunction, when the unlocking operation is performed through the reversing transmission mechanism 17, the arm plate 175 is flipped at an angle to drive the oil extraction mechanism 19 to operate, and the lubricating oil inside the oil tank 18 is extracted through the oil pipe a, and then injected into the rotary control shaft core 13 through the oil pipe b, which can have a real-time lubrication effect on the rotary control shaft core 13. When the oil inside the rotary control shaft core 13 is full, it is discharged and collected into the recovery space inside the oil tank 18 through the oil pipe c.

[0037] Reference Fig.10 The oil pumping and discharging mechanism 19 includes a sealing barrel 191, a core rod 192 is slidably sleeved inside the sealing barrel 191, the top of the core rod 192 penetrates to the outside of the sealing barrel 191, the bottom of the sealing barrel 191 and the top of the core rod 192 are movably sleeved with a connector 194 through a spherical joint 193, and the two connectors 194 are respectively fixedly connected to the top of the oil tank 18 at the bottom of the arm plate 175, and a one-way oil inlet pipe port 195 and a one-way oil discharge pipe port 196 are provided on the side wall of the sealing barrel 191. The one-way oil inlet pipe port 195 is connected to the oil pipe a, and the one-way oil discharge pipe port 196 is connected to the oil pipe b.

[0038] When the arm plate 175 is flipped at an angle, a connecting head 194 is displaced, thereby driving the sealing barrel 191 and the core rod 192 to change from an inclined state to a vertical state. At this time, the distance between the two connecting heads 194 is relatively reduced, achieving the effect of controlling the sliding of the core rod 192. When the arm plate 175 returns to its position, the core rod 192 returns to its position, thereby causing the core rod 192 to form a piston motion inside the sealing barrel 191, achieving the effect of pumping out oil.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. The present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multifunctional integrated concealed lock for a refrigerator foam door, comprising a lock movable part (1) installed on the refrigerator door body and a lock fixing part (2) installed on the refrigerator body, characterized in that: The lock movable part (1) comprises a closing box (11), the closing box (11) is installed inside the refrigerator door, and the side facing the lock fixing part (2) and the front side are flush with the surface of the refrigerator door, the lock fixing part (2) is installed inside the refrigerator body, the closing box (11) is provided with a panel (12) on the front side, the panel (12) is provided with a rotary control shaft core (13) and a hidden box (14) extending into the closing box (11) on the front side, the rotary control shaft core (13) is fixedly connected to the output shaft of the rotary control shaft core (13), a groove (16) is provided on one side of the closing box (11), the lock hook (15) passes through the groove (16) and cooperates with the lock fixing part (2), and the rotary control shaft core (13) is used to control the flipping of the lock hook (15); A reversing transmission mechanism (17) is also arranged inside the closed box (11); a control end of the reversing transmission mechanism (17) is arranged inside the dark box (14); and the moving direction of the control end is the same as the force direction of opening the refrigerator door; an output end of the reversing transmission mechanism (17) is connected to the lock hook (15); and the reversing transmission mechanism (17) is used to control the flipping of the lock hook (15).

2. The multifunctional integrated concealed lock for a refrigerator foam door according to claim 1, characterized in that: The reversing transmission mechanism (17) comprises a rotating shaft (171) and a supporting rod (179); the rotating shaft (171) is rotatably sleeved with end blocks (172) at the upper and lower ends; the two end blocks (172) are fixedly connected at the back of the dark box (14); the side wall of the rotating shaft (171) is fixedly connected with a lever (173) and an arm plate (175); the inner wall of the dark box (14) is provided with a transverse through-groove extending through the back; the lever (173) enters the interior of the dark box (14) through the transverse through-groove and is connected to the arm plate (175). A pressure plate (174) is provided on the arm plate (175), a slide rail is slidably sleeved in the slide rail, a slide block (176) is slidably sleeved in the slide rail, and connecting seats (178) are rotatably sleeved at both ends of the support rod (179), one connecting seat (178) is fixedly connected to the bottom of the lock hook (15), and the other connecting seat (178) is rotatably sleeved on the top of the slide block (176) through a knob (177), and the support rod (179) is in an inclined state when the lock hook (15) is in a docking state with the lock fixing member (2).

3. The multifunctional integrated concealed lock for a refrigerator foam door according to claim 1, characterized in that: The panel (12) comprises a main body plate (121), and an insert frame (122) is fixedly connected to the main body plate (121) on one side facing the closed box (11); the insert frame (122) is inserted into the closed box (11); positioning slide bars (124) are arranged at the top and bottom of the insert frame (122); inner blocks (111) are arranged at the top and bottom of the inner wall of the closed box (11); positioning slide grooves are arranged on the inner walls of the two inner blocks (111); and the two positioning slide bars (124) are slidably sleeved in the positioning slide grooves on the two inner blocks (111).

4. The multifunctional integrated concealed lock for a refrigerator foam door according to claim 3, characterized in that: An embedding block (123) is provided on one side of the main body plate (121) facing the closing box (11), and an embedding groove that fits with the embedding block (123) is provided on the closing box (11).

5. The multifunctional integrated concealed lock for a refrigerator foam door according to claim 1, characterized in that: The rotary control shaft core (13) comprises a cylinder shell (131), the cylinder shell (131) is fixedly connected to the panel (12), a main shaft core (132) is rotatably sleeved in the inner cavity of the cylinder shell (131), one end of the main shaft core (132) extends to the front face of the panel (12) for controlling rotation, and the other end extends to the inside of the closed box (11) for connecting with a lock hook (15), a cylindrical block (133) is fixedly connected to the side wall of the main shaft core (132), a positioning slide block (135) is fixedly connected to the side wall of the cylindrical block (133), an annular groove is formed on the inner wall of the cylinder shell (131), the positioning slide block (135) is movably sleeved in the annular groove, and one end of the cylindrical block (133) is transmission-connected to the inner wall of the cylinder shell (131) via a torsion spring (134).

6. The multifunctional integrated concealed lock for a refrigerator foam door according to claim 2, characterized in that: The support rod (179) is composed of an outer cylinder (1791) and an inner column (1792), and the outer cylinder (1791) is slidably sleeved inside the inner column (1792).

7. The multifunctional integrated concealed lock for a refrigerator foam door according to claim 6, characterized in that: The side wall of the outer cylinder (1791) is provided with an air hole (1793) penetrating into the inner cavity of the outer cylinder (1791), and the air hole (1793) is arranged at the bottom of the inner column (1792).

8. The multifunctional integrated concealed lock for a refrigerator foam door according to claim 1, characterized in that: The lock fixing member (2) comprises a U-shaped plate (21), a flip plate (22) is arranged inside the U-shaped plate (21), the flip plate (22) is rotatably sleeved on the inner wall of the U-shaped plate (21) through a rotating column (23), one end of the rotating column (23) is transmission-connected to the inner wall of the U-shaped plate (21) through a second torsion spring (24), a limiting plate (25) is fixedly connected to the inner wall of the U-shaped plate (21), the limiting plate (25) is in contact with one side of the flip plate (22), the limiting plate (25) is used to limit the flip plate (22) from flipping counterclockwise, and the side of the lock hook (15) facing the flip plate (22) is arranged as a slope.

9. The multifunctional integrated concealed lock for a refrigerator foam door according to claim 2, characterized in that: The reversing transmission mechanism (17) is connected to an oil injection mechanism, which is composed of an oil tank (18) and an oil pumping and draining mechanism (19). The oil tank (18) is used to store liquid lubricating oil and has a recovery space arranged therein. The oil pumping and draining mechanism (19) is mounted on the top of the oil tank (18) and is linked to the arm plate (175). The oil inlet of the oil pumping and draining mechanism (19) is connected to the inside of the oil tank (18) through an oil pipe a, and the oil outlet of the oil pumping and draining mechanism (19) is connected to the inside of the rotary control shaft core (13) through an oil pipe b. The arm plate (175) is tilted at an angle to control the operation of the oil pumping and draining mechanism (19), and the inside of the rotary control shaft core (13) is connected to the recovery space inside the oil tank (18) through an oil pipe c.

10. The multifunctional integrated concealed lock for a refrigerator foam door according to claim 9, characterized in that: The oil pumping and draining mechanism (19) comprises a sealing barrel (191), a core rod (192) is slidably sleeved inside the sealing barrel (191), the top end of the core rod (192) extends to the outside of the sealing barrel (191), the bottom end of the sealing barrel (191) and the top end of the core rod (192) are movably sleeved with a connecting head (194) via a spherical joint (193), the two connecting heads (194) are respectively fixedly connected to the top of the oil tank (18) at the bottom of the arm plate (175), and a one-way oil inlet pipe opening (195) and a one-way oil discharge pipe opening (196) are provided on the side wall of the sealing barrel (191), the one-way oil inlet pipe opening (195) is connected to the oil pipe a, and the one-way oil discharge pipe opening (196) is connected to the oil pipe b.

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