Height adjusting device and refrigerator with same

Abstract

The invention discloses a height adjusting device and a refrigerator with the height adjusting device. The height adjusting device comprises a bottom hinge and a middle hinge. A lifting mechanism is arranged in the bottom hinge, the middle hinge is rotated to enable the upper surface and the lower surface of the supporting plate of the middle hinge to be installed in a reversing mode, and the lifting distance of the supporting plate corresponds to the maximum lifting distance of the lifting mechanism of the bottom hinge. The bottom hinge is arranged in a lifting mode, meanwhile, the middle hinge is rotated to enable the upper surface and the lower surface of the supporting plate to be installed in a reversing mode, the lifting distance between the downward surface of the supporting plate and the ground is correspondingly equal to the maximum lifting distance of a lifting mechanism of the bottom hinge, and therefore the vertical height positions of a freezing door and a cold storage door of the refrigerator can be adjusted. Therefore, the refrigerator can be matched with table tops of different cupboards in height for installation, and the visual effect of space tidiness and simplicity is improved.

Description

Technical Field

[0001] The invention relates to a height adjusting device, in particular to a height adjusting device which can be used as a support and has a lifting function, and a refrigerator with the adjusting device. Background Art

[0002] With the continuous improvement of living standards, refrigerators have become household appliances owned by most families. The refrigerator industry has developed rapidly, gradually catering to the home market and small-sized houses, and the requirements for the use of refrigerators in the home decoration style are getting higher and higher. Since refrigerators are mostly placed next to the sideboards in the kitchen and living room, it is usually required that the height of the refrigerator and the cabinet be coordinated and unified, with the seams aligned and the surfaces level. For example, the waistline between the refrigerator door and the freezer door of a larger refrigerator is required to be flush with the countertop of the sideboard, so that the entire space looks neat and simple.

[0003] Please refer to Fig.12 and Fig.15 , the existing refrigerator is generally provided with a freezer and a refrigerator. The freezer door 3 is connected to the bottom of the box body 1 by the bottom hinge 5 and the middle hinge 4, and the freezer door 3 can be rotated to open and close; the refrigerator door 2 is connected to the top of the box body 1 by the middle hinge 4 and the upper hinge 6, and the refrigerator door 2 can also be rotated to open and close. The waistline is between the refrigerator door 2 and the freezer door 3 of the refrigerator. Since the upper and lower heights of the existing bottom hinge 5 and the middle hinge 4 cannot be adjusted, the refrigerator is installed, and the waistline heights of the refrigerator door 2 and the freezer door 3 and the waistline between the two are fixed. Moreover, the waistline height of the refrigerator is now fixed according to the customary standard, for example: the height of the refrigerator waistline from the ground is generally: 830mm, 835mm, 840mm, 850mm, etc. When such a waistline height is matched with a home cabinet, the waistline of the refrigerator may be too low or too high, resulting in unevenness with the countertop, affecting the visual effect of the overall space.

[0004] Therefore, how to overcome the defect that the height of the waistline of the existing box door cannot be adjusted is a problem that needs to be solved in the art. Summary of the invention

[0005] In order to solve the technical problem that the height position of the waistline of a refrigerator door cannot be adjusted, the present invention provides a height adjustment device which can be used as a support and has a lifting function, and a refrigerator having the height adjustment device.

[0006] The present invention provides a height adjustment device, which includes a bottom hinge and a middle hinge, and is characterized in that a lifting mechanism is provided in the bottom hinge, and the middle hinge is rotated so that the upper and lower surfaces of the support plate of the middle hinge are installed in reverse direction, and the lifting distance of the support plate corresponds to the maximum lifting distance of the lifting mechanism of the bottom hinge. The height adjustment device changes the height of the freezer door through the lifting mechanism in the bottom hinge, and at the same time, the middle hinge is rotated so that the upper and lower surfaces of the support plate of the middle hinge are installed in reverse direction, so that the lifting distance of the downward surface of the support plate from the ground is compatible with the lifting distance of the lifting mechanism of the bottom hinge. The upper and lower door bodies can be moved up and down synchronously to adjust the height of the waistline between the freezer door and the refrigeration door of the refrigerator to meet different needs.

[0007] Preferably, the bottom hinge comprises a connecting plate and the lifting mechanism disposed on the front support surface of the connecting plate, and the lifting mechanism is a step-retractable sleeve rod structure. The bottom hinge can adopt an existing refrigerator leveling device, but the chain shaft of the bottom hinge is changed into a step-retractable sleeve rod structure, so that lifting mechanisms of various structures can be flexibly adopted.

[0008] Preferably, the lifting mechanism comprises a hollow shaft connected to the connecting plate, and a supporting shaft arranged in the hollow shaft and capable of stepwise telescopic expansion along the axial direction of the hollow shaft. The coaxially arranged hollow shaft and the telescopic structure of the supporting shaft arranged in the hollow shaft are convenient for manufacturing and installation.

[0009] Preferably, at least two pairs of high and low opening grooves are axially arranged on the circumferential wall of the hollow shaft, and the axial distance between the bottoms of the opening grooves is the lifting distance; the outer circle of the support shaft is symmetrically provided with bosses, and the pair of bosses are correspondingly clamped in the opening grooves of the hollow shaft. High and low opening grooves are axially arranged on the hollow shaft, and bosses matching with the opening grooves are arranged on the outer circle of the support shaft. When the bosses of the support shaft are clamped into the opening grooves of different axial heights, the lifting distance of the support shaft relative to the hollow shaft can be conveniently adjusted.

[0010] Preferably, when the boss of the support shaft is clamped in the low-position opening groove of the hollow shaft, the end face of the support shaft is flush with the end face of the hollow shaft. When the boss of the support shaft is clamped in the lowest opening groove of the hollow shaft, the top ends of the two components are flush. In this way, the distance of the top end of the support shaft relative to the top end of the hollow shaft can be set based on the top end of the hollow shaft as the distance required to adjust the door body lifting.

[0011] Preferably, the middle hinge comprises a fixing plate, the supporting plate connected to the surface of the fixing plate in a cantilever beam manner, a hinge shaft vertically arranged on the upper and lower surfaces of the supporting plate, and at least two mounting holes horizontally arranged on the fixing plate. The supporting plate is connected to the surface of the fixing plate in a cantilever beam manner, that is, the supporting plate is in a horizontal state, so that the hinge shaft is vertically arranged up and down to support and connect the upper and lower door bodies. Providing at least two mounting holes can ensure a stable and reliable connection.

[0012] Preferably, there are two mounting holes, and the hinge axis is arranged on the fixing plate in a symmetrical manner. When there are an even number of mounting holes, it is convenient to arrange the mounting holes symmetrically relative to the hinge axis of the support plate. When the height needs to be adjusted and flipped, there is no need to move the mounting position of the hinge.

[0013] Preferably, the middle hinge is a pair of left and right installations, and the support plate is arranged on one side of the installation hole of the fixing plate; when the positions of the left and right middle hinges of the pair of middle hinges are interchanged, the middle hinges are rotated at the same time so that the upper and lower surfaces of the support plate are installed in reverse directions. By arranging the installation hole on one side of the hinge shaft, middle hinges of different structures can be manufactured to meet different installation requirements.

[0014] Preferably, when the middle hinge is in a low position, the vertical distance L1 between the downward surface of the support plate and the center line of the two mounting holes on the fixed plate is half of the sum of the maximum lifting distance Lmax of the support shaft of the bottom hinge and the thickness of the support plate, that is, L1 = (Lmax + thickness of the support plate) / 2.

[0015] When the middle hinge is in the low position, the relationship between the vertical distance L1 between the downward surface of the support plate and the center line of the two mounting holes on the fixed plate and the maximum distance Lmax of the bottom hinge support shaft lifting and lowering can ensure that when the middle hinge is flipped and installed in the high position, the height of the downward surface of the support plate from the ground can be adapted to meet the maximum height of the bottom hinge support shaft lifting and lowering. That is, it can be ensured that when the middle hinge is flipped and installed in the high position, the space ceded by its support plate can accommodate the space for the lower door body to rise. This makes it easy to manufacture a middle hinge that meets the requirements.

[0016] The present invention provides a refrigerator, characterized in that it comprises a height adjustment device provided by the present invention. The height adjustment device has a wide range of applications, that is, in addition to being applied to the height adjustment of doors of furniture, office cabinets, etc., it can also be applied to the height adjustment of doors of household appliances.

[0017] The present invention provides a set of height adjustment devices with lifting function, which includes a bottom hinge and a middle hinge for matching use. The height position of the upper and lower components can be conveniently adjusted by the adjustment device, for example, it is used to adjust the height position of the upper and lower cabinet doors; it can be used to adjust the upper and lower height positions of the freezer door and the refrigeration door of the refrigerator. That is, the height position of the freezer door can be changed by the lifting mechanism in the bottom hinge, and the middle hinge is flipped at the same time, so that the upper and lower surfaces of the support plate of the middle hinge are installed in reverse direction. At this time, the lifting distance of the downward surface of the support plate from the ground is adapted to the lifting distance of the lifting mechanism of the bottom hinge. In this way, the upper and lower door bodies can be moved up and down synchronously to meet different needs. For example, the height of the waistline between the freezer door and the refrigeration door of the refrigerator can be adjusted to meet the requirement that the waistline of the refrigerator is flush with the countertop of the sideboard, so that the entire space looks neat and simple. The adjustment device of the present invention can be set to lift different heights with levels according to needs, for example, it can be set to two levels of high and low, or it can be set to three levels of high, medium and low. The height of each level of lifting can also be selected according to needs, for example, it can be 5mm\10mm\15mm\20mm, etc., so as to adapt to the waistline height adjustment of refrigerators of different specifications, thereby meeting the requirements of matching installation with the height countertops of different cabinets and enhancing the user experience.

[0018] The present invention can be used for adjusting the lifting and lowering of the door body of a single-door or double-door cabinet or refrigerator. For a single-door refrigerator, for example, the two mounting holes of the fixing plate of the middle hinge are arranged transversely symmetrically with the hinge shaft on the support plate, that is, one mounting hole is arranged on each side relative to the hinge shaft. During installation and adjustment, the rear of the bottom hinge is connected to one side of the lower end surface of the refrigerator body, the front support surface of the bottom hinge extends out, the outer side of the lower end surface of the freezer door is looped on the lifting mechanism of the bottom hinge, and the upper end surface of the freezer door is looped on the downward hinge shaft of the middle hinge, so that the freezer door can rotate. At the same time, the lower end surface of the refrigeration door is looped on the upward hinge shaft of the middle hinge, and finally the downward core shaft of the front of the upper hinge is inserted into the shaft hole of the upper end surface of the refrigeration door, and the upper hinge is fixed to the top of the refrigerator, so that the refrigeration door can also rotate. When the waistline height of the refrigerator door needs to be adjusted, it is only necessary to adjust the height of the lifting structure of the bottom hinge and the corresponding position of the flip middle hinge, so that the upper and lower doors can be lifted and lowered synchronously, thereby ensuring the lifting and lowering of the waistline between the upper and lower doors of the refrigerator.

[0019] For a double-door refrigerator, a bottom hinge is provided on the outer side of the lower end surface of the left and right freezer doors to adjust the lifting synchronously, and the middle hinge used in conjunction with it has a support plate provided on one side of the mounting hole of the fixed plate, and needs to be used in pairs, that is, two middle hinges are provided on the left and right to install the left and right door bodies. The other installations are similar to the door body installation of a single-door refrigerator. However, when it is necessary to adjust the height of the waistline of the refrigerator, the positions of the left and right middle hinges must be interchanged, and the middle hinge must be flipped at the same time so that the upper and lower surfaces of the support surface of the middle hinge are installed in reverse. That is, when the bottom hinge of the refrigerator is lifted and the freezer door is raised, the middle hinges on the left and right sides will synchronously leave space for the lower door body to be lifted and lowered to ensure smooth lifting and lowering of the door body. After purchasing the refrigerator with adjustable waistline height provided by the present invention, the user can adjust the height of the waistline of the refrigerator according to the requirements of the interior decoration when installing the refrigerator at home, or can adjust the waistline height by himself. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the lifting mechanism of the bottom hinge of the present invention when it is in a low position;

[0021] Figure 2 It is a three-dimensional diagram of the lifting mechanism of the bottom hinge of the present invention when it is in a high position;

[0022] Figure 3 It is a three-dimensional diagram of the lifting mechanism of the bottom hinge of the present invention when it is exploded;

[0023] Figure 4 It is an exploded and enlarged view of the lifting mechanism of the bottom hinge of the present invention;

[0024] Figure 5 is a low-level diagram of a first embodiment of a hinge in the present invention;

[0025] Figure 6 for Figure 5 High-level view of the mid-hinged flip installation;

[0026] Figure 7 is a schematic diagram of the hinge on the refrigerator door;

[0027] Figure 8 A perspective view of a middle hinge installed on the left side of a second embodiment of the middle hinge of the present invention;

[0028] Fig. 9 A perspective view of a middle hinge installed on the right side of a second embodiment of the middle hinge of the present invention;

[0029] Fig.10 A schematic diagram of the left and right installation positions of the hinge of the second embodiment of the present invention and the interchange of the left and right installation positions after flipping;

[0030] Fig.11 This is a front view of the double-door refrigerator of the present invention when the waistline of the door is at a low position;

[0031] Fig.12 This is a front view of the double-door refrigerator of the present invention when the waistline of the door body is at a high position;

[0032] Fig.13 It is a front comparison schematic diagram of a double-door refrigerator door body with the waistline at a high and low position of the present invention;

[0033] Fig.14 for Fig.11 A cross-sectional view of

[0034] Fig.15 for Fig.12 A cross-sectional view of

[0035] Fig.16 It is a cross-sectional comparison schematic diagram of the waistline of the door body of the double-door refrigerator of the present invention being at a high and low position;

[0036] Fig.17 for Fig.15 A magnified view of part A;

[0037] Fig.18 for Fig.15 Enlarged view of part B.

[0038] In the figure:

[0039] 1-Box;

[0040] 2-Refrigerator door;

[0041] 3- Freezer door;

[0042] 4-Middle hinge;

[0043] 41-fixed plate; 42-support plate; 43-hinge axis;

[0044] 5 bottom hinge;

[0045] 51-connecting plate; 52-refrigerator leveling knob; 53-lifting mechanism; 531-support shaft; 532-boss;

[0046] 533-hollow shaft; 534-opening slot;

[0047] 6. Upper hinge. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the present invention and do not constitute a limitation to the present invention.

[0049] Since the height of the waistline of the existing refrigerator door cannot be adjusted, when the refrigerator cabinets are placed together, the waistline of the refrigerator door is not flush with the cabinet countertop, which affects the visual effect.

[0050] To solve these problems, the present invention provides an embodiment of an adjusting device with a lifting function, such as Figure 1 , 2 As shown in FIGS. 5 and 7, the adjustment device comprises a bottom hinge 5, a middle hinge 4 and an upper hinge 6. The bottom hinge 5 comprises a long strip-shaped connecting plate 51, a lifting mechanism 53 provided on the upper surface of the front part of the connecting plate, and a refrigerator leveling knob 52 provided on the lower surface of the front part of the connecting plate. Usually, the rear part of the connecting plate 51 is used to connect the lower end surface of the box body, and the lifting mechanism 53 extending from the front part cooperates with the lower end surface of the lower door and serves as a hinge axis for the rotation of the lower door. By adjusting the height of the lifting mechanism 53, the height of the lower door can also be adjusted.

[0051] like Figure 3 , Figure 4 As shown, the lifting mechanism 53 on the bottom hinge 5 is a sleeve rod structure that can be telescopic one by one, that is, a stepped telescopic sleeve rod structure. The lifting mechanism 53 in this embodiment includes a hollow shaft 533 fixedly connected to the connecting plate 51, and a support shaft 531 disposed in the hollow shaft 533 and capable of sliding up and down along the axial direction of the hollow shaft. Two pairs of high and low opening grooves 534 are axially arranged on the circumferential wall of the hollow shaft 533, and each pair of opening grooves is radially symmetrically arranged. The distance L between the axial bottoms of the two pairs of high and low opening grooves 534 is the lifting height of the lifting mechanism. The outer circle of the support shaft 531 is radially symmetrically provided with bosses 532, and the symmetrically arranged pair of bosses can be correspondingly engaged in the pair of opening grooves 534 of the hollow shaft 533, that is, the support shaft 531 is axially pulled out and rotated along its own axis so that the bosses 532 thereon are aligned with the notches of the other pair of opening grooves 534 of the hollow shaft 533, and then inserted downwardly, so that the support shaft 531 can be lifted and lowered relative to the hollow shaft 533. Since only two pairs of high and low opening grooves 534 are provided on the circumferential wall of the hollow shaft 533 of this embodiment, the lifting mechanism of this embodiment can only achieve changes in the two positions of high and low.

[0052] The lifting structure 53 can also be set to change the height of multiple levels according to the needs, as long as multiple pairs of opening grooves 534 with different heights are set on the circumferential wall of the hollow shaft 533. For example, by setting three pairs of opening grooves with different heights, the support shaft 531 can be placed in three positions of high, medium and low, and the distances between the three positions of high, medium and low can be selected, and the axial distance between the low opening groove and the high opening groove is the maximum distance Lmax, so as to meet the needs of lifting different heights.

[0053] like Figure 1 As shown, when the boss 532 of the support shaft 531 is stuck in the low-position opening groove 534 of the hollow shaft 533, the end surface of the support shaft 531 is flush with the end surface of the hollow shaft 533. Figure 2As shown, when the boss 532 of the support shaft 531 is stuck in the high-position open groove 534 of the hollow shaft 533, the end face of the support shaft 531 is raised by a distance L. The axial distance between the bottoms of the two pairs of open grooves 534 of the hollow shaft 533 is the distance L that the end face of the support shaft 531 can be raised, and the range of the raised distance L can be selected from 5mm to 20mm. The specific value of the lifting distance L can be selected as needed, such as 5mm, 10mm, 15mm or 20mm, etc. When the shaft hole of the lower end face of the lower box door is sleeved on the hollow shaft 533 of the lifting mechanism, the lower box door can not only rotate around the hollow shaft 533, but also be raised in height as the support shaft 531 rises.

[0054] like Figure 5 , Figure 6 As shown, the middle hinge 4 used in conjunction with the bottom hinge 5 of the present invention comprises: a fixing plate 41, a support plate 42 connected to the fixing plate in a cantilever beam, that is, the support plate is connected to the surface of the fixing plate 41 vertically. There is also a hinge shaft 43 vertically arranged on the upper and lower surfaces of the support plate 42, the hinge shaft passes through the support plate 42 upward and downward, and at least two mounting holes are horizontally arranged on the plate surface of the fixing plate 41. The fixing plate 41 is connected to the box body screw through the mounting holes. During installation, the downward hinge shaft 43 of the middle hinge 4 is inserted into the shaft hole on the upper end face of the lower box door, and the downward hinge shaft 43 of the middle hinge 4 and the hollow shaft 533 of the bottom hinge constitute the shaft core for the rotation of the lower box door. The upward hinge shaft 43 is inserted into the shaft hole on the lower end face of the upper box door, and then the downward mandrel of the front part of the upper hinge 6 is inserted into the shaft hole on the upper end face of the upper box door, and then the upper hinge 6 is fixed to the top of the upper box body. The upward hinge shaft 43 of the middle hinge 4 and the core shaft of the upper hinge 6 constitute the axis core for the rotation of the upper door.

[0055] When the height of the door needs to be adjusted, first adjust the support shaft 53 of the bottom hinge 5 to a height L relative to the hollow shaft 533; at the same time, adjust the middle hinge 4 from Figure 5 Remove the lower position shown and flip it over to Figure 6 As shown in the figure, fix it with screws. Figure 5 As shown, when the middle hinge 4 is in the low position, the vertical distance between the downward surface of its support plate 42 and the ground is H. Figure 6In the high position shown, the surface of the support plate 42 of the middle hinge that originally faced upward is turned downward. At this moment, the vertical distance between the downward surface of the support plate 42 and the ground is greater than or equal to H+Lmax, and Lmax is the maximum distance that the support shaft 531 can be raised. If the support shaft 531 has only two positions, high and low, Lmax is L at this moment. Similarly, the upward surface of the support plate 42 is also raised by L+the thickness of the support plate 42. It can be seen from this that when the middle hinge 4 is rotated so that the upper and lower surfaces of the support plate 42 of the middle hinge are installed in reverse, the lifting distance of the support plate 42 from the ground corresponds to the lifting distance of the lifting mechanism of the bottom hinge 5.

[0056] In fact, in order to coordinate the lifting and lowering of the bottom hinge 5, the height of the support plate 42 of the middle hinge 4 relative to the fixing plate 41 can be reasonably set during manufacturing. Figure 5 , Figure 6 , when the middle hinge 4 is in the low position and the high position respectively, because the position of the screw hole does not change, the distance from the center line of the two mounting holes on the fixing plate 41 to the ground is unchanged, but the height position of the support plate 42 changes. Then, as long as it is ensured that when the middle hinge 4 is in the low position and the high position respectively, the lifting distance of the downward surface of the support plate 42 is not less than the maximum lifting distance Lmax of the support shaft 531 of the bottom hinge 5. Then, when the lower door body and the upper door body are installed, the lower door body and the upper door body will rise and fall synchronously with the lifting and falling of the bottom hinge 5 and the corresponding flipping installation of the middle hinge 4.

[0057] like Figure 5 As shown, when the middle hinge 4 is in the low position, that is, the vertical distance H between the downward surface of the support plate 42 and the ground is the smallest. The vertical distance between the downward surface of the support plate 42 of the middle hinge 4 and the center line of the two mounting holes on the fixing plate 41 is set to L1; Figure 6As shown, when the middle hinge 4 is flipped and installed in the high position, the vertical distance between the upward surface of its support plate 42 and the center line of the two mounting holes on the fixed plate 41 is also L1 and does not change. Then as long as L1+L1 minus the thickness of the support plate 42 is at least equal to the maximum distance Lmax that the support shaft 531 of the bottom hinge 5 can rise and fall, that is, 2L1-the thickness of the support plate 42 = Lmax, or L1 = (Lmax+the thickness of the support plate 42) / 2, it can be ensured that the distance Lmax of the downward surface of the support plate 42 can be raised and lowered. For example, the maximum lifting distance Lmax of the support shaft 531 of the bottom hinge 5 is 10mm, and the thickness of the support plate 42 is 2mm, then L1 is calculated to be 6mm. That is, during manufacturing, the middle hinge 4 is in the defined low-position structural state, so that the vertical distance L1 between the downward surface of the support plate 42 and the center line of the two mounting holes on the fixed plate 41 is 6mm, and then fixedly connected, the maximum lifting distance of the lower door can be 10mm without interference. There may also be other calculation methods, as long as the lifting distance of the rear support plate 42 can meet the lifting and lowering of the lower door.

[0058] The present invention also provides a refrigerator using the regulating device with lifting function. For the embodiment of the single-door refrigerator, the regulating device with lifting function includes a bottom hinge 5, such as Figures 1 to 4 A middle hinge 4, such as Figure 5 , Figure 6 An upper hinge 6, such as Figure 7 As shown. In this embodiment, the two mounting holes of the fixing plate 41 of the middle hinge 4 are arranged transversely symmetrically with the hinge shaft 43 on the support plate, that is, one mounting hole is arranged on each side relative to the hinge shaft 43. During installation and adjustment, the rear part of the connecting plate 51 of the bottom hinge 5 is connected to one side of the lower end surface of the refrigerator body, the front support surface of the bottom hinge is extended, the shaft hole on one side of the lower end surface of the freezing door is looped on the hollow shaft 533 of the lifting mechanism 53 of the bottom hinge, the downward hinge shaft 43 of the middle hinge 4 is inserted into the shaft hole of the upper end surface of the freezing door, and the middle hinge 4 is screwed to the refrigerator body at the same time, so that the freezing door can rotate. Then, the shaft hole of the lower end surface of the refrigeration door is looped on the upward hinge shaft 43 of the middle hinge, and finally, the downward core shaft of the front part of the upper hinge 6 is inserted into the shaft hole of the upper end surface of the refrigeration door, and the rear part of the upper hinge 6 is fixed to the top of the refrigerator, so that the refrigeration door can also rotate. When it is necessary to adjust the waistline height between the upper and lower doors of the refrigerator, just adjust the height of the lifting mechanism of the bottom hinge 5 and the corresponding flip adjustment position of the middle hinge 4, so that the upper and lower doors can be lifted and lowered synchronously, thereby ensuring the lifting and lowering of the waistline between the upper and lower doors of the refrigerator.

[0059] For the double door refrigerator embodiment, Fig.11 , Fig.14As shown, the double-door refrigerator includes a box body 1, a refrigerator door 2 opened left and right, and a freezer door 3 opened left and right. The lower freezer door 3 is installed on the box body 1 through a middle hinge 4 and a bottom hinge 5, and the upper refrigerator door 2 is installed on the box body 1 through a middle hinge 4 and an upper hinge 6. The bottom hinge 5 is a pair of left and right hinges arranged on the lower end surface of the refrigerator, and is used to connect the lower end surfaces of the left and right freezer doors 3. Fig.17 As shown, during installation and adjustment, the rear part of the connecting plate 51 of the bottom hinge 5 is connected to the lower end surface of one side of the refrigerator body, the front support surface of the bottom hinge extends out of the box body 1, and the shaft hole outside the lower end surface of the freezing door 3 is loosely sleeved on the hollow shaft 533 of the lifting mechanism of the bottom hinge 5. Fig.11 , Fig.17 and Figure 8 , Fig. 9 As shown, the middle hinge 4 also needs to be set at a left and right position, respectively installed on the left and right door bodies. Insert the downward hinge shaft 43 of the middle hinge 4 into the shaft hole on the upper end surface of the freezer door 3, and screw the middle hinge 4 to the box body 1 so that the freezer door 3 can rotate. The support plate 42 of this middle hinge 4 is set on the lateral side of the installation hole of the fixing plate 41, as shown in FIG. Figure 8 As shown, the middle hinge 4 installed on the left side of the box body 1 has a support plate 42 disposed on the left side of the mounting hole of the fixing plate 41. Fig. 9 As shown, the middle hinge 4 is installed on the right side of the box body 1, and its support plate 42 is arranged on the right side of the installation hole of the fixing plate 41. Then the shaft hole of the lower end surface of the refrigeration door 2 is loosely sleeved on the upward hinge shaft 43 of the middle hinge, and finally the downward core shaft of the front part of the upper hinge 6 is inserted into the shaft hole of the upper end surface of the refrigeration door 2, and the rear part of the upper hinge 6 is fixed to the top of the refrigerator, so that the refrigeration door can also rotate.

[0060] When the waistline between the upper and lower doors of the refrigerator needs to be raised, the refrigerator door 2 and the freezer door 3 must be removed first, and then the support shaft 53 of the bottom hinge 5 is adjusted to rise by a height L relative to the hollow shaft 533; Figure 8 , Fig. 9 The lower positions of the left and right middle hinges 4 shown in the figure are interchanged. Fig.10 As shown, the middle hinge 4 on the left is flipped to the high position shown in the lower right and then fixed with screws; the middle hinge 4 on the right is flipped to the high position shown in the lower left and then fixed with screws. The positions of the left and right middle hinges 4 are interchanged, and the middle hinge is flipped at the same time, so that the upper and lower surfaces of the support plate 42 of the middle hinge are installed in reverse direction. The distance that the support plate 42 of the middle hinge after flipping and installation rises is equal to the maximum distance Lmax that the support shaft 53 can rise relative to the hollow shaft 533. That is, when the bottom hinge 5 of the refrigerator is lifted and the freezer door 3 is lifted accordingly, the support plates 42 of the middle hinges on the left and right sides will synchronously make way for the freezer door 3 to rise, so as to ensure the smooth lifting and lowering of the door body. Then, the shaft hole on the lower end face of the refrigerated door 2 is slipped onto the upward hinge shaft 43 of the middle hinge 4, as shown in FIG. Fig.18As shown, the mandrel with the front of the upper hinge 6 facing downward is inserted into the shaft hole on the upper end surface of the refrigeration door 2, and finally the upper hinge 6 is fixed to the top of the refrigerator, so that the refrigeration door 2 can also rotate. Fig.13 and Fig.16 As shown, by comparing the refrigerator door in high and low positions, Fig.12 and Fig.15 The height ratio of the freezing door 3 and the refrigerating door 2 is shown. Fig.11 and Fig.14 The position in the middle should be high. Fig.12 and Fig.15 The waistline position between the freezer door 3 and the refrigerated door 2 is shown to be raised. After purchasing the refrigerator with an adjustable waistline provided by the present invention, the user can adjust the height of the waistline of the refrigerator according to the requirements of the interior decoration when installing the refrigerator in the house. The waistline height can also be adjusted by oneself to meet the visual effect of the interior decoration. Similarly, the reverse operation is to remove the refrigerated door 2 and the freezer door 3, and then the support shaft 531 of the bottom hinge 5 is lowered by a height L relative to the hollow shaft 533, so that the support shaft 531 is completely hidden in the hollow shaft 533, and the pair of middle hinges 4 arranged on the left and right are synchronously flipped and transposed, so that the upper and lower surfaces of the support plate 42 thereon are installed in the reverse direction. Generally, the core shaft of the upper hinge 6 is longer, and the shaft hole on the upper end face of the refrigerated door 2 is also deeper, with just enough space to allow the refrigerated door 2 to move up and down.

[0061] For a double-door refrigerator, the bottom hinge 5 and the upper hinge 6 used remain unchanged, and the middle hinge 4 used in a single-door refrigerator may also be used. Figure 5 and Figure 6 As shown, the fixing plate 41 of the middle hinge 4 is provided with an even number of mounting holes, for example, two mounting holes. The two mounting holes of the fixing plate 41 are arranged transversely symmetrically with respect to the hinge shaft 43 on the support plate, that is, one mounting hole is arranged on each side relative to the hinge shaft 43. When the height of the door body is raised or lowered, it is only necessary to flip the middle hinge 4 in situ so that the upper and lower surfaces of the support plate 42 of the middle hinge are installed in reverse direction, without the need to interchange the left and right positions of the two middle hinges 4, so that the upper and lower door bodies can be synchronously raised or lowered in coordination with the bottom hinge, that is, the raising or lowering of the waistline between the upper and lower door bodies of the refrigerator can be ensured. Because, after the middle hinge 4 is flipped in situ, the position of the axis of the hinge shaft 43 on the support plate 42 does not change, and there is no need to change the structure when installing the freezer door 3 and the refrigeration door.

[0062] It should be noted that the terms used in this specification are only for describing specific embodiments and are not intended to limit the present invention. Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the technical features and steps described in these embodiments do not limit the scope of protection of the present invention. For the technology, methods and equipment known to ordinary technicians in the relevant field, this specification is not discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of this specification. Any specific value in this specification should be interpreted as being merely exemplary and not constituting a limitation of the present invention.

[0063] For the convenience of description, the terms describing the position used in the specification, such as "above...", "to the left of...", "in front of...", etc., are only used to describe the spatial position relationship between a certain component and other components of the embodiment shown in the figure. When the position of the component is different, the relative position will change. Therefore, the position relationship of the embodiment of the drawing should not constitute a limitation to the present invention.

[0064] In addition, it should be noted that the words "first", "second" and the like used in the specification are only used to distinguish similar components, and there is no order of precedence, so they cannot be understood as limiting the scope of protection of the present invention. The above description is only a specific implementation of the present invention. It should be pointed out that any modification, equivalent substitution and change made within the spirit and framework of the present invention should be included in the scope of protection of the present invention.

Claims

1. A height adjustment device, comprising a bottom hinge and a middle hinge, characterized in that: The bottom hinge is provided with a lifting mechanism, and the middle hinge is flipped so that the upper and lower surfaces of the support plate of the middle hinge are installed in reverse directions, and the lifting distance of the support plate corresponds to the maximum lifting distance of the lifting mechanism of the bottom hinge.

2. The height adjustment device according to claim 1, characterized in that: The bottom hinge comprises a connecting plate and the lifting mechanism arranged on the front supporting surface of the connecting plate, and the lifting mechanism is a stepped telescopic sleeve rod structure.

3. The height adjustment device according to claim 2, characterized in that: The step-by-step telescopic sleeve rod structure comprises a hollow shaft connected to the connecting plate, and a support shaft arranged in the hollow shaft and performing step-by-step telescopic operation along the axial direction of the hollow shaft.

4. The height adjustment device according to claim 3, characterized in that: At least two pairs of high and low opening grooves are axially arranged on the circumferential wall of the hollow shaft, and the axial distance between the bottoms of the opening grooves is the lifting distance; the outer circle of the support shaft is symmetrically provided with bosses, and the pair of bosses are correspondingly clamped in the opening grooves of the hollow shaft.

5. The height adjustment device according to claim 4, characterized in that: When the boss of the support shaft is clamped in the low-position opening groove of the hollow shaft, the end surface of the support shaft is flush with the end surface of the hollow shaft.

6. The height adjustment device according to claim 1, characterized in that: The middle hinge comprises a fixing plate, the supporting plate connected to the surface of the fixing plate in a cantilever beam manner, a hinge shaft vertically arranged on the upper and lower surfaces of the supporting plate, and at least two mounting holes are arranged on the fixing plate.

7. The height adjustment device according to claim 6, characterized in that: There are two mounting holes, and the hinge axes of the support plates are laterally symmetrical and arranged on the fixing plate.

8. The height adjustment device according to claim 6, characterized in that: The middle hinge is a pair installed on the left and right, and the support plate is arranged on one side of the installation hole of the fixed plate; when the left and right positions of the two middle hinges are installed interchangeably, the middle hinge is flipped over and the upper and lower surfaces of the support plate are installed in reverse.

9. The height adjustment device according to claim 1, characterized in that: When the middle hinge is in a low position, the vertical distance L1 between the downward surface of the support plate and the center line of the two mounting holes on the fixed plate is half of the sum of the maximum lifting distance Lmax of the support shaft of the bottom hinge and the thickness of the support plate, that is, L1 = (Lmax + thickness of the support plate) / 2.

10. A refrigerator, characterized in that: Comprising a height adjustment device as described in any one of claims 1-9.

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