Oil supply device, footing system and household appliance

Abstract

The invention provides an oil supply device, a footing system and a household appliance. The oil supply device comprises an oil bag, a fixing mechanism and an adjusting mechanism. The fixing mechanism comprises a first fixing plate, a second fixing plate, a first barrel located between the first fixing plate and the second fixing plate and a plurality of fixing pieces fixedly connected with the first fixing plate and the second fixing plate, and the first fixing plate, the second fixing plate and the first barrel define a containing cavity used for containing the oil bag. The first fixing plate is provided with a through hole for communicating the inside and the outside of the accommodating cavity; the adjusting mechanism is movably connected with the second fixing plate, and part of the adjusting mechanism protrudes into the containing cavity to abut against the oil bag. The oil bag is arranged in the fixing mechanism, in the process that the adjusting mechanism abuts against the oil bag, the oil supply device is effectively prevented from generating shearing force in the axial direction, the operation stability is improved, and the overall structural strength of the oil supply device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to an oil supply device, a foot system and a household appliance. Background Art

[0002] Since the use of household appliances has certain requirements on the flatness of the ground, generally, leveling bolts are set at the bottom of the household appliances. However, due to the limitation of the installation site, the leveling bolts are inconvenient to adjust. There is a method of hydraulic adjustment to achieve on-demand adjustment of the height of the household appliances. On the one hand, the oil supply device is installed at the bottom of the household appliance, which is inconvenient to operate due to the limitation of the installation site. On the other hand, adjusting the volume of the liquid storage container by external force increases the difficulty of adjustment, affecting the user experience.

[0003] In view of this, it is necessary to design an oil supply device, a foot system and a household appliance to solve one of the above problems. Summary of the Invention

[0004] The present invention provides an oil supply device, a foot system and a household appliance to solve one of the above problems.

[0005] In order to achieve the above object, the technical solution provided by the present invention is as follows:

[0006] The present invention provides an oil supply device, comprising:

[0007] Oil sac;

[0008] a fixing mechanism comprising a first fixing plate, a second fixing plate, a first cylinder located between the first fixing plate and the second fixing plate, and a plurality of fixing members fixedly connecting the first fixing plate and the second fixing plate, wherein the first fixing plate, the second fixing plate, and the first cylinder form a receiving cavity for receiving the oil bag, and the first fixing plate is provided with a through hole communicating with the inside and outside of the receiving cavity;

[0009] The adjusting mechanism is movably connected to the second fixing plate, and a portion of the adjusting mechanism protrudes into the receiving cavity to press the oil bag.

[0010] Furthermore, the fixing member is located outside the first cylinder.

[0011] Furthermore, the fixing member includes a bolt for connecting the first fixing plate and the second fixing plate, and a limiting sleeve sleeve mounted on the outside of the bolt and located between the first fixing plate and the second fixing plate, and the outer surface of the limiting sleeve is in contact with the outer surface of the first cylinder.

[0012] Furthermore, the fixing mechanism also includes a plug-in portion fixed to the first fixing plate, the oil bag includes a docking portion cooperating with the plug-in portion, and a sealing portion extending outward from the end of the docking portion, the through hole is provided on the plug-in portion, and the fixing mechanism also includes a pressure ring for crimping the sealing portion onto the first fixing plate.

[0013] Furthermore, the pressure ring has a limiting portion and a mounting portion extending outward from the outer wall surface, the limiting portion abuts against the inner wall of the first cylinder, and a sliding space is formed between the first cylinder and the outer wall surface of the pressure ring; the radial dimension of the mounting portion along the first cylinder is larger than the dimension of the limiting portion, and the mounting portion is clamped between the first cylinder and the second fixed plate.

[0014] Furthermore, it also includes a mounting frame, which includes a pair of mounting plates and a connecting plate connecting the pair of mounting plates, and the pair of mounting plates are respectively installed on the outside of the first fixing plate and the second fixing plate along the axial direction of the first cylinder.

[0015] Furthermore, the adjustment mechanism includes a pressure plate located in the accommodating cavity and pressed against the oil bag, and an adjustment rod in contact with the side of the pressure plate facing away from the oil bag. The adjustment rod extends along the arrangement direction of the pressure plate and the oil bag and is threadedly connected to the second fixed plate.

[0016] Furthermore, the adjustment mechanism also includes a second cylinder extending vertically from the pressure plate toward the oil bag, the second cylinder is in contact with the inner wall of the receiving cavity, and in the arrangement direction of the pressure plate and the oil bag, the length of the second cylinder is smaller than the length of the receiving cavity.

[0017] The present invention also provides a footing system, which includes the above-mentioned oil supply device.

[0018] The present invention further provides a household appliance, comprising the above-mentioned oil supply device.

[0019] Compared with the prior art, the oil supply device of the present invention has the following beneficial effects: the oil supply device of the present invention, by arranging the oil bag in the fixing mechanism, effectively prevents the oil supply device from generating axial shear force during the process of the adjusting mechanism pressing the oil bag, thereby improving the operational stability and the overall structural strength of the oil supply device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the oil supply device of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of another embodiment of the oil supply device of the present invention.

[0022] Figure 3 yes Figure 1Exploded view of the components of the oil supply device.

[0023] Figure 4 yes Figure 1 A cross-sectional view taken from another angle along the AA direction.

[0024] Figure 5 yes Figure 4 Enlarged view of the local structure at point B in the middle.

[0025] Figure 6 yes Figure 4 Cross-sectional view of another state.

[0026] Among them, 10-fixing mechanism, 11-first fixing plate, 111-through hole, 112-plug-in part, 113-limiting ring, 114-sealing groove, 115-card slot, 12-second fixing plate, 121-allowance hole, 13-first cylinder, 14-fixing part, 141-bolt, 142-limiting sleeve, 15-pressure ring, 151-pressing surface, 152-limiting part, 153-mounting part, 154-limiting surface, 20-oil bag, 21-docking part, 22-sealing part, 30-adjustment structure, 31-adjusting rod, 32-pressure plate, 33-second cylinder, 40-mounting frame, 41-mounting plate, 42-connecting plate, 43-mounting groove. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "upper" and "lower" and the like indicate directions or positional relationships based on those shown in the auxiliary figures, and are intended only to simplify the description of the present invention, rather than to indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the scope of protection of the present invention. Specifically, in the present invention, the user's operating surface is referred to as the front, the direction toward the ground is referred to as the bottom, and conversely, the direction away from the ground is referred to as the top. Other descriptions indicating directions are defined based on "upper" and "lower".

[0029] In various drawings of the present invention, for the sake of convenience, some sizes of structures or parts are exaggerated relative to other structural parts. Therefore, they are only used to illustrate the basic structure of the subject matter of the present invention.

[0030] The present invention provides an oil supply device, a foot system and a household appliance, wherein the foot system is located at the bottom of the household appliance to adjust the height and level of the household appliance, and the oil supply device supplies oil to the foot system or stores oil according to demand.

[0031] like Figures 1 to 6 As shown, the oil supply device includes a fixing mechanism 10, an oil sac 20 in the fixing mechanism 10, and an adjusting mechanism 30. The oil sac 20 is located in the fixing mechanism 10. During the process of the adjusting mechanism 30 crimping the oil sac 20, the fixing mechanism 10 effectively prevents the oil supply device from generating a shear force perpendicular to the crimping direction, thereby improving the operational stability and the overall structural strength of the oil supply device.

[0032] For ease of explanation, the arrangement direction of the adjusting mechanism 30 and the oil bag 20 is defined as the axial direction of the liquid oil supply device in the present invention, that is, the pressing direction of the adjusting mechanism 30 and the oil bag 20 is the axial direction, and the arrangement direction perpendicular to the adjusting mechanism 30 and the oil bag 20 is defined as the radial direction.

[0033] Specifically, if Figure 3 、 Figure 4 and Figure 6 As shown, the fixing mechanism 10 includes a first fixing plate 11, a second fixing plate 12, a first cylinder 13 located between the first fixing plate 11 and the second fixing plate 12, and a plurality of fixing members 14 fixedly connecting the first fixing plate 11 and the second fixing plate 12. The first fixing plate 11, the second fixing plate 12 and the first cylinder 13 enclose a receiving cavity for accommodating the oil sac 20, which limits the oil sac 20 in the fixing mechanism 10. On the one hand, the fixing mechanism 10 can protect the oil sac 20. On the other hand, when the oil sac 20 is squeezed and deformed, the oil sac 10 is limited, so that the oil medium can be squeezed out smoothly.

[0034] The first fixing plate 11 and the second fixing plate 12 are arranged axially. A through hole 111 is defined on the first fixing plate 11, connecting the interior and exterior of the receiving chamber. Specifically, the through hole 111 is located axially along the oil supply device. The oil sac 20 is positioned adjacent to the first fixing plate 11, connecting the interior of the oil sac 20 with the exterior of the receiving chamber via the through hole 111. A clearing hole 121 is defined on the second fixing plate 12, through which the adjustment mechanism 30 passes. The clearing hole 121 axially extends through the second fixing plate 12.

[0035] The first fixing plate 11 and the second fixing plate 12 are correspondingly provided with a clamping groove 115 for clamping the first cylinder 13. The setting of the clamping groove 115 can not only fix the first cylinder 13 in combination with the fixing member 14, but also limit the first cylinder 13 in the radial direction.

[0036] The first cylinder 13 is preferably cylindrical, which matches the shape of the oil bag 20 to facilitate positioning of the oil bag 20 and maintain the structural stability of the fixing mechanism 10 .

[0037] Furthermore, the fixing members 14 are located outside the first cylinder 13 to radially limit the first cylinder 13 between the fixing members 14, thereby preventing the oil supply device from generating radial shear forces when the oil bladder 20 is subjected to force. Preferably, the fixing members 14 are attached to the outside of the first cylinder 13 to limit the first cylinder 13.

[0038] Of course, the fixing member 14 can also be arranged inside the first cylinder 13 and hidden inside the first cylinder 13, so that the oil supply device as a whole is relatively simple, and the bonding strength of the fixing member 14 to the first fixing plate 11 and the second fixing plate 12 is not affected.

[0039] The plurality of fixing members 14 are evenly spaced and arranged along the axial direction of the first cylinder 13. Figure 3 As shown, the fixing member 14 includes a bolt 141 for connecting the first fixing plate 11 and the second fixing plate 12, and a limiting sleeve 142 that is sleeved on the outside of the bolt 141 and located between the first fixing plate 11 and the second fixing plate 12. The outer surface of the limiting sleeve 142 is in contact with the outer surface of the first cylinder 13. The limiting sleeve 142 is designed to limit the oil supply device along the axial direction.

[0040] In this embodiment, there are four fixing parts 14, and the fixing parts 14 are evenly arranged along the circumference of the first cylinder 13. The limiting sleeves 142 are arranged corresponding to the fixing parts 14. The overall force of the first cylinder 13 is balanced, further improving the structural strength of the fixing mechanism 10.

[0041] The oil sac 20 is located in the receiving cavity for storing oil medium. It can be understood that the oil sac 20 can be sealed or open. When the oil sac 20 is sealed, the oil supply device uses a pipeline to pass through the through hole 111 to connect to the oil sac; when the oil sac is open, the oil sac 20 is sealed and connected to the first fixed plate 11, and the through hole 111 is located at a position corresponding to the opening of the oil sac 20.

[0042] Preferably, if Figures 4 to 6As shown, the oil bag 20 is open in design and is plugged into and matched with the first fixing plate 11. Specifically, the fixing mechanism 10 also includes a plug-in portion 112 provided on the first fixing plate 11, and the plug-in portion 112 extends axially. The through hole 111 is provided on the plug-in portion 112. The oil bag 20 includes a docking portion 21 that cooperates with the plug-in portion 112. The through hole 111 directly connects the oil bag 20 with the outside of the accommodating cavity, thereby reducing the path for the liquid oil to flow and improving the efficiency of the liquid oil circulation.

[0043] In order to further improve the sealing between the oil sac 20 and the first fixed plate 11, the oil sac 20 also includes a sealing portion 22 extending outward from the end of the docking portion 21, and the sealing portion 22 is attached to the first fixed plate 11. The first fixed plate 11 is also provided with a limiting ring 113, and the limiting ring 113 is located on the outside of the plug-in portion 112 and is spaced apart from the plug-in portion 112. A sealing groove 114 that cooperates with the sealing portion 22 is formed between the plug-in portion 112 and the limiting ring 113, and the sealing portion 22 is interference fit with the sealing groove 114. The arrangement of the sealing portion 22 and the limiting ring 113 not only increases the path connecting the inside and outside of the oil sac 20, improves the sealing performance between the oil sac 20 and the first fixed plate 11, but also improves the bonding strength between the oil sac 20 and the first fixed plate 11.

[0044] As a preferred embodiment of the present invention, Figures 3 to 6 As shown, the fixing mechanism 10 also includes a pressure ring 15 for pressing the sealing portion 22 onto the first fixing plate 11. The pressure ring 15 has a docking surface 151 that docks with the first fixing plate 11. In this embodiment, since the limiting ring 113 protrudes from the first fixing plate 11, the docking surface 151 correspondingly has a crimping surface 1511 that cooperates with the limiting ring 113 and the sealing portion 22. The crimping surface 1511 is formed by a partial inward depression of the docking surface 151, which can increase the path connecting the inside and outside of the oil bag 20, improve the sealing between the oil bag 20 and the first fixing plate 11, and also improve the bonding strength between the oil bag 20 and the first fixing plate 11.

[0045] The pressure ring 15 has a limiting surface 154 away from the first fixed plate 11, and the limiting surface 154 is inclined from the outside to the inside. When the oil sac 20 is squeezed, the oil sac 20 has the tendency to move toward the first fixed plate 11 or has the tendency to move. The limiting surface 154 prevents the movement of the oil sac 20, which can effectively improve the efficiency of oil output from the oil sac 20.

[0046] Furthermore, the pressure ring 15 has a limiting portion 152 and a mounting portion 153 extending radially outward from the outer wall surface, wherein the limiting portion 152 abuts against the inner wall of the first cylinder 13, and the first cylinder 13 and the outer wall surface of the pressure ring 15 are spaced apart to form a sliding space 16; the radial dimension of the mounting portion 153 along the first cylinder 13 is larger than the dimension of the limiting portion 152, and the mounting portion 153 is clamped between the first cylinder 13 and the second fixed plate 12, that is, the pressure ring 15 is clamped between the first cylinder 13 and the second fixed plate 12 through the mounting portion 153, and is then fixed between the first fixed plate 11 and the second fixed plate 12.

[0047] Furthermore, the adjustment mechanism 30 is movably connected to the second fixing plate 12 , part of the adjustment mechanism 30 protrudes into the receiving cavity to press the oil bag 20 , and part of the adjustment mechanism 30 is located outside the receiving cavity to facilitate user operation.

[0048] As another preferred embodiment of the present invention, Figure 4 and Figure 6 As shown, the adjustment mechanism 30 is axially pressed against the oil bag 20. Specifically, the adjustment mechanism 30 includes a pressure plate 32 located in the receiving cavity and pressed against the oil bag 20, and an adjustment rod 31 in contact with a side of the pressure plate 32 facing away from the oil bag 20.

[0049] The adjusting rod 31 extends along the arrangement direction of the pressure plate 32 and the oil bag 20 , that is, the adjusting rod 31 extends along the axial direction, so that the adjusting rod 31 can apply an external force along the axial direction to the oil bag 20 .

[0050] In this embodiment, the adjusting rod 31 is threadedly connected to the second fixed plate 12, which facilitates the control of the amplitude of the adjusting rod 31 squeezing the oil bag 20 through the pressure plate 32. The rate of oil entering and exiting the oil bag 20 is close to a uniform speed, and the process of adjusting the height of the household appliance is controllable, thereby improving the efficiency of adjusting the household appliance. When the adjusting rod 31 is not rotated, the threaded connection between the adjusting rod 31 and the second fixed plate 12 can also limit the position of the adjusting rod 31 to maintain the height state of the household appliance at that time.

[0051] Preferably, the radial dimension of the pressure plate 32 is not less than the radial dimension of the oil bladder 20 to increase the contact area between the pressure plate 32 and the oil bladder 20. Of course, if the radial dimension of the pressure plate 32 is comparable to the radial dimension of the adjustment rod 31, the pressure plate 32 can be omitted, that is, the adjustment rod 31 directly contacts the oil bladder 20, which is also within the scope of protection of this application.

[0052] Furthermore, the adjustment mechanism 30 also includes a second cylinder 33 extending vertically from the pressure plate 32 toward the oil bag 20. The second cylinder 33 is in contact with the inner wall of the accommodating cavity. When the adjustment rod 31 presses the oil bag, the second cylinder 33 slides in the sliding space 16.

[0053] In the embodiment where the fixing mechanism 10 includes a pressure ring 15 , the axial end of the second cylinder 33 is in contact with the outer wall of the pressure ring 15 to limit the pressure ring 15 away from the end of the first fixing plate 11 .

[0054] In the arrangement direction of the pressure plate 32 and the oil bag 20 , the length of the second cylinder 33 is smaller than the length of the receiving cavity, so that the receiving cavity has enough space in the axial direction for the second cylinder 33 to slide.

[0055] In this embodiment, the second cylinder 33 is preferably arranged cocentrically with the first cylinder 13 , and the oil supply device has a symmetrical structure. When the adjusting rod 31 squeezes the oil bag 20 , the fixing mechanism 10 is subjected to balanced force.

[0056] Of course, the adjustment mechanism 30 can also squeeze the oil bag 20 in the radial direction. The adjustment mechanism 20 includes a pair of adjustment rods (not shown) pivotally connected to each other, one end of the pair of adjustment rods is located on both sides of the oil bag 20 in the radial direction, and the other end is located on the outside of the fixing mechanism 10 for easy adjustment.

[0057] As a preferred embodiment of the present invention, Figure 2 As shown, the oil supply device also includes a mounting frame 40, which is U-shaped. The mounting frame 40 includes a pair of mounting plates 41 and a connecting plate 42 connecting the pair of mounting plates 41. The pair of mounting plates 41 are respectively installed on the outside of the first fixing plate 11 and the second fixing plate 12, that is, the pair of mounting plates 41 are axially fixed to the outside of the fixing mechanism 10 through the fixing members 14, and the mounting plates 41 are axially fixed together by the connecting plate 42, thereby further improving the overall structural strength of the oil supply device. In the process of squeezing the oil bag 20 by the adjusting mechanism 30, the mounting frame 40 further prevents the generation of radial shear force.

[0058] In this embodiment, a through hole (not shown) for the adjusting rod 41 to pass through is provided on the mounting plate 41 adjacent to the second fixing plate 12 , and a mounting groove 43 for fixing the entire oil supply device is provided on the connecting plate 42 .

[0059] like Figure 4 and Figure 6As shown, the working process of supplying oil of the oil supply device is: rotating the adjusting rod 41 drives the pressure plate 42 to press the oil bag 20, the volume of the oil bag 20 is reduced due to the squeezing, and the oil flows out from the oil bag 20 through the through hole 111. In the working process of storing the oil, the adjusting rod 41 is rotated in the opposite direction to drive the pressure plate 42 away from the oil bag 20, thereby releasing the squeezing of the oil bag 20, the volume of the oil bag 20 becomes larger, and the external oil enters the oil bag 20.

[0060] The present invention also provides a footing system, which includes a hydraulic footing, the above-mentioned oil supply device, and a connecting pipe connecting the hydraulic footing and the oil supply device. The oil supply device is used to transport liquid oil to the hydraulic footing to increase the height of the household appliance. The oil supply device is used to store the oil in the hydraulic footing in an oil bag to lower the height of the household appliance. When the oil supply device is not operated, the oil circulates in several hydraulic footings to achieve adaptive balance of the hydraulic footing, so that the footing system has a wider range of applications. In addition, the oil supply device of the present invention can avoid shear force during the adjustment process and improve the stability of the footing system.

[0061] The present invention also includes a household appliance, which includes the above-mentioned oil supply device. Through the oil supply device, liquid oil can be transported to the hydraulic base through the oil supply device to increase the height of the household appliance. The oil supply device can store the oil in the hydraulic base in an oil bag to lower the height of the household appliance. When the oil supply device is not operated, the oil circulates in several hydraulic bases to achieve adaptive balance of the hydraulic bases, thereby improving the user experience.

[0062] The oil supply device is fixed to the household appliance via the mounting bracket 40 , and the structural strength and stability of the oil supply device are improved during the process of the adjustment mechanism 30 adjusting the oil bag 20 .

[0063] In summary, the oil supply device of the present invention, by arranging the oil bag 20 in the fixing mechanism 10, effectively prevents the oil supply device from generating axial shear force during the process of the adjustment mechanism 30 pressing the oil bag 20, thereby improving the operational stability and the overall structural strength of the oil supply device.

[0064] It should be understood that although this specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0065] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. An oil supply device, characterized in that: include: Oil sac; a fixing mechanism comprising a first fixing plate, a second fixing plate, a first cylinder located between the first fixing plate and the second fixing plate, and a plurality of fixing members fixedly connecting the first fixing plate and the second fixing plate, wherein the first fixing plate, the second fixing plate, and the first cylinder form a receiving cavity for receiving the oil bag, and the first fixing plate is provided with a through hole communicating with the inside and outside of the receiving cavity; The adjusting mechanism is movably connected to the second fixing plate, and a portion of the adjusting mechanism protrudes into the receiving cavity to press the oil bag.

2. The oil supply device according to claim 1, wherein: The fixing member is located outside the first cylinder.

3. The oil supply device according to claim 2, wherein: The fixing member includes a bolt for connecting the first fixing plate and the second fixing plate, and a limiting sleeve sleeved outside the bolt and located between the first fixing plate and the second fixing plate, and the outer surface of the limiting sleeve is in contact with the outer surface of the first cylinder.

4. The oil supply device according to claim 1, wherein: The fixing mechanism also includes a plug-in portion fixed to the first fixing plate, the oil bag includes a docking portion cooperating with the plug-in portion, and a sealing portion extending outward from the end of the docking portion, the through hole is provided on the plug-in portion, and the fixing mechanism also includes a pressure ring for crimping the sealing portion onto the first fixing plate.

5. The oil supply device according to claim 4, characterized in that: The pressure ring has a limiting portion and a mounting portion extending outward from the outer wall surface. The limiting portion abuts against the inner wall of the first cylinder, and a sliding space is formed between the first cylinder and the outer wall surface of the pressure ring; the radial dimension of the mounting portion along the first cylinder is larger than the dimension of the limiting portion, and the mounting portion is clamped between the first cylinder and the second fixing plate.

6. The oil supply device according to any one of claims 1 to 5, characterized in that: It also includes a mounting frame, which includes a pair of mounting plates and a connecting plate connecting the pair of mounting plates. The pair of mounting plates are respectively installed on the outside of the first fixing plate and the second fixing plate along the axial direction of the first cylinder.

7. The oil supply device according to any one of claims 1 to 5, characterized in that: The adjustment mechanism includes a pressure plate located in the receiving cavity and pressed against the oil bag, and an adjustment rod in contact with a side of the pressure plate facing away from the oil bag. The adjustment rod extends along the arrangement direction of the pressure plate and the oil bag and is threadedly connected to the second fixed plate.

8. The oil supply device according to claim 7, wherein: The adjustment mechanism also includes a second cylinder extending vertically from the pressure plate toward the oil bag, the second cylinder is in contact with the inner wall of the receiving cavity, and in the arrangement direction of the pressure plate and the oil bag, the length of the second cylinder is smaller than the length of the receiving cavity.

9. A footing system, characterized in that: The invention comprises the oil supply device according to any one of claims 1 to 8.

10. A household appliance, characterized in that: The invention comprises the oil supply device according to any one of claims 1 to 8.

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