Door balancing assembly and dishwasher using the door balancing assembly

Abstract

The present invention relates to the technical field of dishwashers, and provides a door balancing assembly and a dishwasher using the door balancing assembly, comprising a rotating shaft, a pull rope, a friction sleeve, a door hinge connected to the dishwasher door, and a hinge connecting plate and a tension spring respectively fixed to the dishwasher base, wherein the rotating shaft is respectively connected to the door hinge and the hinge connecting plate, and the pull rope is respectively connected to the door hinge and the tension spring; the door hinge is provided with a hook connected to the pull rope, and the end of the door hinge is provided with a supporting portion for friction with the pull rope; the friction sleeve is sleeved on the hook and the supporting portion of the door hinge, and generates a damping force by friction with the pull rope as the door hinge rotates to limit the movement of the door body. The present invention improves the door balancing assembly, effectively improves the friction resistance of the door assembly, keeps the hovering control of the door body stable, eliminates installation hazards, and improves the quality of the whole machine.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashers, and in particular to a door balancing component and a dishwasher using the door balancing component. Background Art

[0002] In order to make the opening and closing movement of the door body controllable, dishwashers currently on the market generally use a balance control structure for the door hinge, thereby saving design space. When the dishwasher door is opened, the balance control structure allows the door body to achieve a hovering effect at any angle after opening a certain angle. In order to achieve the hovering effect of the door body, a hovering control structure is usually provided on the left and right sides of the door hinge assembly hinged to the dishwasher, so as to control the hovering of the dishwasher door body during the opening process.

[0003] The hovering control structure of the prior art is realized by increasing the resistance through friction and cooperating with the tension spring. On the one hand, door hinges and hinge connecting plates are respectively arranged on both sides of the door body to realize the connection of the rotating shaft, and the hinge connecting plates are fixed on the base of the dishwasher, so that the door hinge is arranged on the door assembly and can rotate 0-90 degrees with the rotating shaft as the axis; on the other hand, a metal friction strip, such as a metal pull rope, is arranged, so that one end of the pull rope is hung on the hook of the door hinge, and the other end is connected to the tension spring fixed on the base, and one or two friction guide plates fixed on the base are arranged in the middle of the pull rope to increase the friction force. The above two aspects cooperate to form a hovering control structure, so that when the door body is opened and closed, the tension of the tension spring, the friction resistance between the parts, the arm length of the door hinge, etc. cooperate with each other, and the friction resistance is used to overcome the disadvantage that the arm length of the door hinge cannot be dynamically balanced, thereby realizing the hovering control of the door body at various angles when opening and closing the door.

[0004] However, in the above structure, the tension of the tension spring and the lever arm length of the door hinge are constants, while the friction resistance between the door hinge and the metal pull rope is uncertain. The friction resistance between the door hinge and the pull rope is mainly generated by the end of the door hinge or a supporting portion is provided on the end, which is in frictional contact with the pull rope. After long-term use, the friction resistance at this location will gradually weaken, resulting in a reduction in the hovering effect of the door body or even failure, which poses a safety hazard and affects the quality of the entire machine. Summary of the invention

[0005] The purpose of the present invention is to provide a door balancing assembly and a dishwasher using the door balancing assembly. In view of the problem that the resistance is easily weakened due to the defects of the door balancing assembly in the prior art, the door balancing assembly is improved to effectively increase the friction resistance of the door assembly, so that the hovering control of the door body remains stable, eliminate installation hazards, and improve the quality of the entire machine.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A door balancing assembly includes a rotating shaft, a pull rope, a friction sleeve, a door hinge connected to the dishwasher door, and a hinge connecting plate and a tension spring respectively fixed to the dishwasher base, wherein the rotating shaft is respectively connected to the door hinge and the hinge connecting plate, and the pull rope is respectively connected to the door hinge and the tension spring; a hook connected to the pull rope is provided on the door hinge, and a supporting portion rubbed against the pull rope is provided at the end of the door hinge; the friction sleeve is sleeved on the hook and the supporting portion of the door hinge, and generates a damping force by rubbing against the pull rope as the door hinge rotates to limit the movement of the door.

[0008] Compared with the prior art, the door balancing assembly of the present invention, firstly, by arranging a friction sleeve at the end of the door hinge, the friction sleeve and the pull rope rub to generate damping force, thereby effectively controlling the movement of the door body. Secondly, the friction sleeve is sleeved on the abutting part of the door hinge, so that the thickness of the friction sleeve is greater than the abutting part of the door hinge. The thickness setting of the friction sleeve can better contact with the pull rope, thereby increasing the friction contact area, effectively improving the friction force and the stability of mutual contact, and improving the damping effect. Thirdly, the friction sleeve also provides sleeve protection for the hook, which can effectively improve the fixing effect of the hanging pull rope, thereby improving the stability of the entire door balancing assembly, effectively improving the friction resistance, so that the hovering control of the door body remains stable, eliminating installation hazards, and improving the quality of the whole machine.

[0009] The structure of the friction sleeve is further improved. The friction sleeve is provided with an installation groove, a sleeve portion and a top contact portion. The friction sleeve is fixedly engaged with the abutment portion of the door hinge through the installation groove. The sleeve portion is sleeved on the buckle hook and buckled with the pull rope. The top contact portion is used to frictionally contact with the pull rope to generate a damping force. On the one hand, the friction sleeve is sleeved on the abutment portion and the buckle hook of the door hinge so that the friction sleeve can be firmly installed on the door hinge; on the other hand, the damping force is generated by the frictional contact between the top contact portion of the friction sleeve and the pull rope, thereby effectively controlling the movement of the door body so that the door body can achieve a hovering effect.

[0010] Furthermore, the door body balancing assembly also includes a movable hook connected to the buckle hook, one end of the movable hook is connected to the pull rope, the other end of the movable hook is provided with a buckle ring, the sleeve portion of the friction sleeve is provided with a buckle groove, the buckle ring is embedded in the buckle groove and is fixed to the buckle hook; the movable hook is in friction contact with the top contact portion of the friction sleeve to generate a damping force as the door hinge moves. Due to the limited thickness of the pull rope itself, it is easy to wear and break due to long-term friction, resulting in failure of friction resistance and safety problems. In order to solve the technical problem that the pull rope is easy to break, the door body balancing assembly is further improved, and a movable hook is added between the buckle hook of the door hinge and the pull rope for connection. The movable hook replaces the pull rope in friction contact with the friction sleeve, which effectively prevents the pull rope from breaking and being damaged due to long-term friction. In addition, since one end of the movable hook is connected to the hook through a buckle and the other end is connected to the pull rope, the movable hook can swing around the connection point with the hook as the axis, and adjust the connection state with the pull rope during the rotation of the door hinge to achieve a flexible connection, effectively protecting the pull rope and preventing the pull rope from bending and causing damage, thereby improving the stability of the entire door body balance assembly.

[0011] Furthermore, a limiting groove is provided on the top contact portion of the friction sleeve, and the movable hook is embedded in the limiting groove, so that the movable hook and the top contact portion of the friction sleeve are automatically aligned to avoid the movable hook from shifting during the activity and failing to contact the top contact portion, thereby effectively ensuring the stability of the friction contact between the two.

[0012] The connection structure between the door hinge and the hinge connecting plate is further improved. The door hinge is provided with an axis hole, the hinge connecting plate is provided with a through hole matching the axis hole, a rotating shaft is provided between the door hinge and the hinge connecting plate, and the rotating shaft is connected to the axis hole and the through hole; a friction ring is sleeved on the rotating shaft, the friction ring is clamped between the door hinge and the hinge connecting plate, and a receiving groove for storing lubricating oil is provided on the friction ring. A friction ring is provided between the door hinge and the hinge connecting plate, and a proper amount of lubricating oil is added to the receiving groove on the friction ring, so as to protect the door hinge and the hinge connecting plate, avoid friction damage or jamming of the two during the rotation of the rotating shaft, and effectively improve the smoothness of the opening and closing movement of the door body.

[0013] Furthermore, the rotating shaft is provided with a first step, a second step and a third step whose shaft diameters decrease successively from the outside to the inside. The first step is used to limit and prevent the door hinge from falling out, the second step is used to connect with the shaft hole of the door hinge and the friction ring; the third step is used to connect with the through hole of the hinge connecting plate, so that the door hinge, the hinge connecting plate and the friction ring are tightly arranged on the rotating shaft, which effectively prevents them from falling out and improves the stability of the connection structure of each component.

[0014] The present invention also provides a dishwasher, comprising a door body and a base, and also comprising the above-mentioned door body balancing assembly, wherein a pull rope wheel, a fixing seat for fixing the hinge connecting plate, and an adjusting seat for adjusting the tension of the tension spring are provided on both sides of the base, and the pull rope wheel is arranged between the tension spring and the fixing seat and is connected to the pull rope, thereby adding multiple friction nodes on the pull rope, effectively enhancing the friction resistance and improving the hovering control effect of the door body.

[0015] The tension spring adjustment structure is further improved, the base is provided with a limit frame for accommodating the tension spring, the adjustment seat of the tension spring is arranged in the limit frame; the adjustment seat is provided with a plurality of orderly arranged fixing columns, the end of the tension spring is provided with a fixing hook, the tension spring is selectively buckled with the fixing column at the corresponding position through the fixing hook to adjust the tension of the tension spring; a fixing groove for engaging the fixing hook is provided between adjacent fixing columns; a connecting bone is provided between the fixing column and the limit frame, and a positioning groove for engaging the fixing hook is provided on the connecting bone. The tension spring adjustment seat of the prior art is fixed by the combination of a fastener and an anti-slip sheet, so that the fixing hook of the tension spring is hooked with the fastener, and then installed on the fixing column at the corresponding position, so as to adjust the tension of the tension spring, but after long-term use, the fastener is easy to loosen, causing the entire tension spring to fall out, and the door body automatically opens and falls, causing safety problems. In order to solve the adjustment and fixing effect of the tension spring, the tension spring adjustment seat of the present invention, on the one hand, contains the tension spring and the adjustment seat by setting a limit frame, and allows the limit frame to support the adjustment seat and the tension spring, thereby improving the fixing effect of the entire adjustment structure. On the other hand, the fixing hook is hung on the fixing column to transfer the force of the tension spring from the original fastener to the fixing column; and in combination with the fixing grooves set between adjacent fixing columns and the positioning grooves set on the connecting bones between the fixing column and the limit frame, the fixing hook of the tension spring is embedded in the fixing groove and the positioning groove for fixing, thereby improving the fixing effect of the fixing hook. In practical applications, it is also preferred to set a baffle and a fastener to fix the fixing hook of the tension spring, thereby improving the fixing effect of the entire tension spring adjustment structure, effectively preventing the tension spring from loosening, and eliminating safety hazards.

[0016] The fixing structure of the hinge connecting plate is further improved. The hinge connecting plate is provided with a plurality of screw holes and positioning holes connected and fixed to the fixing seat. The fixing seat is provided with a peripheral edge matched with the outer edge contour of the hinge connecting plate, and the peripheral edge abuts against the outer edge of the hinge connecting plate. The hinge connecting plate is also provided with a limit baffle, and the end of the door hinge is provided with a limit protrusion matched with and abutted against the position of the limit baffle. On the one hand, with respect to the fixing structure between the hinge connecting plate and the fixing seat, the hinge connecting plate is provided with a plurality of fixing screw holes and positioning holes connected to the fixing seat, thereby increasing the connection area between the two and effectively improving the fixing effect. In addition, the fixing seat is provided with a peripheral edge abutting against the outer edge of the hinge connecting plate, thereby strengthening the force resistance to the hinge connecting plate, effectively preventing the hinge connecting plate from being easily loosened under the active force of the door hinge, and improving the fixing effect. On the other hand, in order to control the opening angle of the door body, a limit baffle is set on the hinge connecting plate to cooperate with the limit protrusion on the door hinge to effectively control the opening angle of the door body.

[0017] The structure of the rope-pulling wheel is further improved. The base is provided with a positioning shaft that is sleeved with the rope-pulling wheel, and the positioning shaft is provided with a positioning protrusion and a fixing hole; the rope-pulling wheel includes a roller and an anti-slipping baffle, the roller is provided with a groove for installing the rope, and the roller is provided with a center hole that is sleeved with the positioning shaft; the anti-slipping baffle covers the center hole and limits the roller from slipping out; the anti-slipping baffle is provided with a positioning notch and a perforation, the perforation is arranged in alignment with the fixing hole of the positioning shaft, and the positioning notch is matched with the positioning protrusion of the positioning shaft and interlocked with each other. On the one hand, the groove is arranged on the outer periphery of the roller of the rope-pulling wheel, which can effectively limit the rope to the rope-pulling wheel, allow the rope to be accurately aligned with the rope-pulling wheel, and make effective friction contact to increase the friction resistance. On the other hand, an anti-slip baffle is provided to limit the roller from the outside, thereby effectively preventing the roller from slipping out; the positioning notch on the anti-slip baffle is engaged with the positioning protrusion on the positioning shaft, which can effectively prevent the anti-slip baffle from rotating with the rolling of the roller, thereby improving the fixing effect of the anti-slip baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A three-dimensional diagram of a dishwasher provided by an embodiment of the present invention;

[0020] Figure 2An exploded diagram of a dishwasher provided by an embodiment of the present invention;

[0021] Figure 3 A three-dimensional diagram of a door hinge provided by an embodiment of the present invention;

[0022] Figure 4 A three-dimensional diagram of a door hinge provided with a friction sleeve according to an embodiment of the present invention;

[0023] Figure 5 The friction sleeve provided by the embodiment of the present invention is a three-dimensional Figure 1 ;

[0024] Figure 6 The friction sleeve provided by the embodiment of the present invention is a three-dimensional Figure 2 ;

[0025] Figure 7 A three-dimensional diagram of a movable hook provided in an embodiment of the present invention;

[0026] Figure 8 A three-dimensional diagram of a friction ring provided by an embodiment of the present invention;

[0027] Fig. 9 A three-dimensional diagram of a rotating shaft provided by an embodiment of the present invention;

[0028] Fig.10 A side view of a dishwasher provided by an embodiment of the present invention;

[0029] Fig.11 for Fig.10 DD cross-sectional view;

[0030] Fig.12 for Fig.11 Magnified view of part F;

[0031] Fig.13 for Figure 2 A magnified view of part A;

[0032] Fig.14 A three-dimensional diagram of a hinge connecting plate provided in an embodiment of the present invention;

[0033] Fig.15 for Figure 2 A magnified view of part B;

[0034] Fig.16 for Figure 2 Enlarged view of part C;

[0035] Fig.17 for Fig.10 EE cross-sectional view;

[0036] Fig.18 for Fig.17 Enlarged view of the G section;

[0037] Fig.19 A view showing a closed state of a dishwasher door provided by an embodiment of the present invention;

[0038] Fig. 20 A state view of a dishwasher door opened to 15 degrees provided by an embodiment of the present invention;

[0039] Fig.21 A state view of a dishwasher door opened to 45 degrees provided by an embodiment of the present invention;

[0040] Fig. 22 This is a state view of a dishwasher door opened to 90 degrees according to an embodiment of the present invention.

[0041] Reference numerals: 100, door body; 101, first mounting hole; 200, base;

[0042] 1. Door hinge; 11. Hook; 12. Abutment portion; 13. Axis hole; 14. Position limiting protrusion; 15. Connecting plate; 16. Second mounting hole;

[0043] 2. hinge connecting plate; 21. through hole; 22. screw hole; 23. positioning hole; 24. stop baffle;

[0044] 3. tension spring; 30. fixing hook; 31. adjusting seat; 32. limiting frame; 321. connecting bone; 322. positioning groove; 33. fixing column; 331. fixing groove;

[0045] 4. Pull rope;

[0046] 5. Friction sleeve; 51. Mounting groove; 52. Sleeve connection portion; 521. Buckle groove; 53. Top contact portion;

[0047] 6. Movable hook; 61. Buckle;

[0048] 7, rotating shaft; 70, friction ring; 701, receiving groove; 71, first step; 72, second step; 73, third step;

[0049] 8. fixing seat; 81. surrounding edge; 82. positioning shaft; 821. positioning protrusion; 822. fixing hole;

[0050] 9. Rope pulling wheel; 91. Roller; 911. Center hole; 912. Groove; 92. Anti-slip baffle; 921. Positioning notch; 922. Perforation. DETAILED DESCRIPTION

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0052] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] Please refer to Figures 1 to 4 As shown, a dishwasher provided by an embodiment of the present invention includes a door body 100 and a base 200, wherein a door body balancing assembly of the present invention is arranged between the door body 100 and the base 200, and the door body balancing assembly includes door hinges 1 arranged on both sides of the door body 100, hinge connecting plates 2 and tension springs 3 which match the position of the door hinges 1 are arranged on both sides of the base 200, the door hinge 1 is connected to the hinge connecting plate 2 through a rotating shaft 7, and a pull rope 4 is connected between the door hinge 1 and the tension spring 3.

[0056] The door hinge 1 is provided with a hook 11 connected to the pull rope 4, and the end of the door hinge 1 is provided with a supporting portion 12 that rubs against the pull rope 4; the door hinge 1 is also provided with a friction sleeve 5 for frictionally contacting the pull rope 4, and the friction sleeve 5 is sleeved on the hook 11 and the supporting portion 12 of the door hinge 1, and generates a damping force by friction with the pull rope 4 as the door hinge 1 rotates to limit the movement of the door body 100.

[0057] The door body balancing assembly of the present invention, by arranging a friction sleeve 5 at the end of the door hinge 1, allows the friction sleeve 5 to generate damping force by friction with the pull rope 4, thereby effectively controlling the movement of the door body 100. In addition, the friction sleeve 5 is sleeved on the abutting portion 12 of the door hinge 1, so that the thickness of the friction sleeve 5 is greater than the abutting portion of the door hinge 1. The thickness setting of the friction sleeve 5 can better contact with the pull rope 4, thereby increasing the friction contact area, effectively improving the friction force and the stability of mutual contact, and improving the damping effect. The friction sleeve 5 also sleeves the hook 11 for protection, which can effectively improve the fixing effect of the hanging pull rope 4, thereby improving the stability of the entire door body 100 balancing assembly, effectively improving the friction resistance, allowing the hovering control of the door body 100 to remain stable, eliminating installation hazards, and improving the quality of the whole machine.

[0058] The structure of the friction sleeve 5 is optimized, such as Figures 5 to 6 As shown, the friction sleeve 5 is provided with a mounting groove 51, a sleeve portion 52 and a top contact portion 53. The friction sleeve 5 is fixedly engaged with the abutting portion 12 of the door hinge 1 through the mounting groove 51. The sleeve portion 52 is sleeved on the buckle 11 and buckled with the pull rope 4. The top contact portion 53 is used to frictionally contact with the pull rope 4 to generate a damping force. On the one hand, the friction sleeve 5 is sleeved on the abutting portion 12 and the buckle 11 of the door hinge 1, so that the friction sleeve 5 can be firmly installed on the door hinge 1; on the other hand, the top contact portion 53 of the friction sleeve 5 is in frictional contact with the pull rope 4 to generate a damping force, thereby effectively controlling the movement of the door body 100, so that the door body 100 can achieve a hovering effect.

[0059] Since the thickness of the pull cord 4 is limited, it is easy to wear and break after long-term friction, resulting in failure of friction resistance and safety problems. In order to solve the technical problem that the pull cord 4 is easy to break, the door body 100 balance component is optimized, such as Figures 6 to 7As shown, it also includes a movable hook 6 connected to the buckle hook 11, and the movable hook 6 replaces the pull rope 4 to make friction contact with the friction sleeve 5, effectively preventing the pull rope 4 from breaking and being damaged due to long-term friction. One end of the movable hook 6 is connected to the pull rope 4, and the other end of the movable hook 6 is provided with a buckle ring 61. The sleeve connection part 52 of the friction sleeve 5 is provided with a buckle groove 521, and the buckle ring 61 is embedded in the buckle groove 521 and is hung and fixed with the buckle hook 11; the movable hook 6 rubs against the top contact part 53 of the friction sleeve 5 with the movement of the door hinge 1 to generate a damping force. The movable hook 6 can swing with the connection part with the buckle hook 11 as the axis, and adjust the connection state with the pull rope 4 during the rotation of the door hinge 1, so as to achieve a flexible connection, effectively protect the pull rope 4, and prevent the pull rope 4 from being easily bent and cut off and damaged, thereby improving the stability of the balancing assembly of the entire door body 100.

[0060] On the basis of the above, a limiting groove (not shown) is provided on the top contact portion 53 of the friction sleeve 5, and the movable hook 6 is embedded in the limiting groove. The movable hook 6 is automatically aligned with the top contact portion 53 of the friction sleeve 5 to prevent the movable hook 6 from shifting during the activity and failing to contact the top contact portion 53, thereby effectively ensuring the stability of the friction contact between the two.

[0061] The connection structure between the door hinge 1 and the hinge connecting plate 2 is optimized, such as Figures 3 to 4 As shown in , 8 to 9, the door hinge 1 is provided with an axis hole 13, the hinge connecting plate 2 is provided with a through hole 21 that matches the axis hole 13, a rotating shaft 7 is provided between the door hinge 1 and the hinge connecting plate 2, and the rotating shaft 7 is connected to the axis hole 13 and the through hole 21; a friction ring 70 is sleeved on the rotating shaft 7, and the friction ring 70 is clamped between the door hinge 1 and the hinge connecting plate 2, and a receiving groove 701 for storing lubricating oil is provided on the friction ring 70. In practical applications, a proper amount of lubricating oil can be added to the receiving groove of the friction ring, so as to protect the door hinge 1 and the hinge connecting plate 2, avoid friction damage or jamming of the two during the rotation of the rotating shaft 7, and effectively improve the smoothness of the opening and closing movement of the door body 100.

[0062] Among them, Figures 9 to 12 As shown, the rotating shaft 7 is provided with a first step 71, a second step 72 and a third step 73, the diameter of which is successively reduced from the outside to the inside. The first step 71 is used to limit and prevent the door hinge 1 from coming out, the second step 72 is used to connect with the shaft hole 13 of the door hinge 1 and the friction ring 70; the third step 73 is used to connect with the through hole 21 of the hinge connecting plate 2, so that the door hinge 1, the hinge connecting plate 2 and the friction ring 70 are tightly arranged on the rotating shaft 7, effectively preventing them from coming out, and improving the stability of the connection structure of each component. Fig.12 As shown, the third step 73 can preferably be fixed to the through hole 21 of the hinge connecting plate 2 by riveting or other methods.

[0063] The entire door body 100 balance assembly is further optimized, such as Figures 1 to 2 As shown, a fixing seat 8 for fixing the hinge connecting plate 2, a pull rope wheel 9 and an adjusting seat 31 for adjusting the tension of the tension spring 3 are also provided on both sides of the base 200. The pull rope wheel 9 is arranged between the tension spring 3 and the fixing seat 8 and is connected to the pull rope 4, thereby adding multiple friction nodes to the pull rope 4, effectively enhancing the friction resistance and improving the hovering control effect of the door body 100.

[0064] The tension spring 3 adjustment seat 31 of the prior art is fixed by a fastener and an anti-drop sheet, so that the fixing hook 30 of the tension spring 3 is hooked with the fastener, and then installed on the fixing column 33 at the corresponding position, so as to adjust the tension of the tension spring 3. However, after long-term use, the fastener is easy to loosen, causing the entire tension spring 3 to fall out, and the door body 100 automatically opens and falls, causing safety problems. In order to solve the adjustment and fixing effect of the tension spring 3, the adjustment structure of the tension spring 3 is optimized, such as Fig.13 As shown, the base 200 is provided with a limit frame 32 for accommodating the tension spring 3, and the adjustment seat 31 of the tension spring 3 is arranged in the limit frame 32; the adjustment seat 31 is provided with a plurality of orderly arranged fixing posts 33, and the end of the tension spring 3 is provided with a fixing hook 30, and the tension spring 3 is selectively buckled with the fixing post 33 at the corresponding position through the fixing hook 30 to adjust the tension of the tension spring 3; a fixing groove 331 is provided between adjacent fixing posts 33 to engage the fixing hook 30; a connecting bone 321 is provided between the fixing post 33 and the limit frame 32, and a positioning groove 322 is provided on the connecting bone 321 to engage the fixing hook 30. On the one hand, by providing the limit frame 32 to accommodate the tension spring 3 and the adjustment seat 31, the limit frame 32 supports the adjustment seat 31 and the tension spring 3, thereby improving the fixing effect of the entire adjustment structure. On the other hand, the fixing hook 30 is hooked on the fixing column 33 to transfer the force of the tension spring 3 from the original fastener to the fixing column 33; and in combination with the fixing groove 331 set between adjacent fixing columns 33 and the positioning groove 322 set on the connecting bone 321 between the fixing column 33 and the limiting frame 32, the fixing hook 30 of the tension spring 3 is embedded in the fixing groove 331 and the positioning groove 322 for fixing, thereby improving the fixing effect of the fixing hook 30. In practical applications, it is also preferred to set an anti-slip sheet and a fastener to fix the fixing hook 30 of the tension spring 3, thereby improving the fixing effect of the entire tension spring 3 adjustment structure, effectively preventing the tension spring 3 from loosening, and eliminating safety hazards.

[0065] Regarding the fixing structure between the hinge connecting plate 2 and the fixing seat 8, as shown in FIG. Figures 14 to 15As shown, the hinge connecting plate 2 is provided with a plurality of screw holes 22 and positioning holes 23 connected and fixed with the fixing seat 8, so as to increase the connection area between the two and effectively improve the fixing effect. The fixing seat 8 is provided with a surrounding edge 81 matching the outer edge contour of the hinge connecting plate 2, and the surrounding edge 81 abuts against the outer edge of the hinge connecting plate 2, thereby strengthening the resistance to the force of the hinge connecting plate 2, effectively preventing the hinge connecting plate 2 from being easily loosened under the active force of the door hinge 1, and improving the fixing effect.

[0066] For the control of the opening angle of the door body 100, such as Figures 3 to 4 As shown in FIG. 14 , a limit baffle 24 is also provided on the hinge connecting plate 2, and a limit protrusion 14 which cooperates with and abuts against the limit baffle 24 is provided at the end of the door hinge 1, thereby effectively controlling the opening angle of the door body 100.

[0067] The structure of the rope pulley 9 is optimized, such as Figures 16 to 18 As shown, the base 200 is provided with a positioning shaft 82 which is sleeved with the rope-pulling wheel 9, and the positioning shaft 82 is provided with a positioning protrusion 821 and a fixing hole 822; the rope-pulling wheel 9 includes a roller 91 and an anti-slip baffle 92, and the roller 91 is provided with a center hole 911 which is sleeved with the positioning shaft 82, and the roller 91 is provided with a groove 912 for installing the pull rope 4, which can effectively limit the pull rope 4 on the rope-pulling wheel 9, allow the pull rope 4 to be accurately aligned with the rope-pulling wheel 9, and make effective friction contact to increase the friction resistance.

[0068] Among them, the anti-slip baffle 92 covers the center hole 911 of the roller 91 and limits the roller 91 from slipping out; the anti-slip baffle 92 is provided with a positioning notch 921 and a through hole 922, and the through hole 922 is arranged in alignment with the fixing hole 822 of the positioning shaft 82, so that fasteners such as screws can be installed to connect and fix the through hole 922 with the fixing hole 822; the positioning notch 921 and the positioning protrusion 821 of the positioning shaft 82 are matched and interlocked with each other. The anti-slip baffle 92 limits the roller 91 from the outside and effectively prevents the roller 91 from slipping out. The positioning notch 921 on the anti-slip baffle 92 is interlocked with the positioning protrusion 821 on the positioning shaft 82, which can effectively prevent the anti-slip baffle 92 from rotating with the rolling of the roller 91, thereby improving the fixing effect of the anti-slip baffle 92.

[0069] Regarding the connection structure between the door body 100 and the door hinge 1, as shown in FIG. Figures 2 to 4As shown, a first mounting hole 101 with a recessed setting is provided on the outer side wall of the door body 100, a connecting plate 15 is provided on the door hinge 1, and a second mounting hole 16 is provided on the connecting plate 15 to match the position of the first mounting hole 101, and the second mounting hole 16 is a convex setting, which matches and is sleeved with the recessed setting of the first mounting hole 101. Preferably, fasteners such as fixing screws can be added to fix it, thereby effectively improving the fixing effect. It should be noted that the concave-convex matching setting of the first mounting hole 101 and the second mounting hole 16 can be replaced according to the actual application situation, so as to achieve the same fixing effect.

[0070] like Figures 19 to 22 As shown, the working principle of the dishwasher door 100 of the present invention is:

[0071] like Fig.19 As shown, when the door body 100 is in a closed state, the door hinge 1 is in a vertical state, the friction sleeve 5 sleeved on the door hinge 1 is not in contact with the movable hook 6, the movable hook 6 is hung on the buckle hook 11 of the door hinge 1, and is vertically connected to the pull rope 4.

[0072] like Fig. 20 As shown, when the door body 100 is opened to the range of 0-40 degrees, the door hinge 1 rotates to a certain angle, the friction sleeve 5 on the door hinge 1 does not contact the movable hook 6, the movable hook 6 is hung on the buckle hook 11, and the angle of the pull rope 4 is flexibly adjusted. By relying on the tension of the tension spring 3 itself, the door body 100 can move in a balanced manner within this door opening angle range.

[0073] like Fig.21 As shown, when the door body 100 is opened to about 45 degrees, the friction sleeve 5 on the door hinge 1 and the movable hook 6 are in friction contact to generate a damping force to effectively control the hovering of the door body 100, thereby playing a role in dynamic adjustment.

[0074] like Fig. 22 As shown, when the door body 100 is opened to 90 degrees, that is, when the door body 100 is opened to the maximum angle, the limit protrusion 14 of the door hinge 1 and the limit baffle 24 on the hinge connecting plate 2 abut against each other; the movable hook 6 is hung on the buckle hook 11, and the angle of the pull rope 4 is flexibly adjusted to effectively protect the pull rope 4 and prevent the pull rope 4 from being easily cut off and worn.

[0075] The door body 100 balancing component of the present invention adds a friction sleeve 5 to the door hinge 1 to cooperate with the movable hook 6, so that when the door body 100 is preferably opened at 37-90 degrees, the force arm length of the door hinge 1 is dynamically adjusted, so that the tension spring 3 is lengthened to increase the tension of the pull rope 4, thereby overcoming the reverse offset of the center of gravity of the door assembly when the door is opened, and realizing that after the door body 100 is opened to 15 degrees, it can be hovered at any angle between 15 and 90 degrees, thereby effectively enhancing the performance of the dishwasher and improving the user's operating experience.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A door balancing assembly, It is characterized in that The invention comprises a rotating shaft, a pull rope, a friction sleeve, a door hinge connected to the dishwasher door body, and a hinge connecting plate and a tension spring respectively fixed to the dishwasher base, wherein the rotating shaft is respectively connected to the door hinge and the hinge connecting plate, and the pull rope is respectively connected to the door hinge and the tension spring; a hook connected to the pull rope is provided on the door hinge, and an abutting portion rubbed with the pull rope is provided at the end of the door hinge; the friction sleeve is sleeved on the hook and the abutting portion of the door hinge, and generates a damping force by friction with the pull rope as the door hinge rotates to limit the movement of the door body; The friction sleeve is provided with a mounting groove, a sleeve connection portion and a top contact portion, the friction sleeve is embedded and fixed with the abutment portion of the door hinge through the mounting groove, the sleeve connection portion is sleeved on the buckle hook and buckled with the pull rope, and the top contact portion is used for frictionally contacting with the pull rope to generate a damping force; The door body balancing assembly also includes a movable hook connected to the buckle, one end of the movable hook is connected to the pull rope, the other end of the movable hook is provided with a buckle ring, the sleeve portion of the friction sleeve is provided with a buckle groove, the buckle ring is embedded in the buckle groove and fixed to the buckle hook; the movable hook frictionally contacts the top contact portion of the friction sleeve to generate a damping force as the door hinge moves.

2. The door balancing assembly according to claim 1, It is characterized in that A limiting groove is provided on the top contact portion of the friction sleeve, and the movable hook is embedded in the limiting groove.

3. The door balancing assembly according to claim 1, It is characterized in that The door hinge is provided with an axial hole, the hinge connecting plate is provided with a through hole that matches the position of the axial hole, a rotating shaft is provided between the door hinge and the hinge connecting plate, and the rotating shaft is connected to the axial hole and the through hole; a friction ring is sleeved on the rotating shaft, and the friction ring is clamped between the door hinge and the hinge connecting plate, and the friction ring is provided with a receiving groove for storing lubricating oil.

4. The door balancing assembly according to claim 3, It is characterized in that The rotating shaft is provided with a first step, a second step and a third step whose shaft diameters decrease successively from the outside to the inside. The first step is used to limit and prevent the door hinge from falling out, the second step is used to connect with the shaft hole of the door hinge and the friction ring; the third step is used to connect with the through hole of the hinge connecting plate.

5. A dishwasher comprising a door and a base, It is characterized in that It also includes a door balancing assembly as described in any one of claims 1 to 4, wherein a pull rope wheel, a fixing seat for fixing the hinge connecting plate, and an adjusting seat for adjusting the tension of the tension spring are provided on both sides of the base, and the pull rope wheel is arranged between the tension spring and the fixing seat and is connected to the pull rope.

6. The dishwasher according to claim 5, It is characterized in that The base is provided with a limit frame for accommodating the tension spring, and the adjustment seat of the tension spring is arranged in the limit frame; the adjustment seat is provided with a plurality of orderly arranged fixing columns, and the end of the tension spring is provided with a fixing hook, and the tension spring is selectively buckled with the fixing column at the corresponding position through the fixing hook to adjust the tension of the tension spring; fixing grooves for embedding the fixing hooks are provided between adjacent fixing columns; a connecting bone is provided between the fixing column and the limit frame, and a positioning groove for embedding the fixing hook is provided on the connecting bone.

7. The dishwasher according to claim 5, It is characterized in that The hinge connecting plate is provided with a plurality of screw holes and positioning holes connected and fixed to the fixing seat; the fixing seat is provided with a surrounding edge matching the outer edge contour of the hinge connecting plate, and the surrounding edge abuts against the outer edge of the hinge connecting plate; the fixing seat is also provided with a limit baffle, and the end of the door hinge is provided with a limit protrusion matching and abutting against the position of the limit baffle.

8. The dishwasher according to claim 5, It is characterized in that The base is provided with a positioning shaft which is sleeved with the rope-pulling wheel, and the positioning shaft is provided with a positioning protrusion and a fixing hole; the rope-pulling wheel includes a roller and an anti-slip baffle, the roller is provided with a groove for installing the pull rope, and the roller is provided with a center hole which is sleeved with the positioning shaft; the anti-slip baffle covers the center hole and limits the roller from slipping out; the anti-slip baffle is provided with a positioning notch and a through hole, the through hole is arranged in alignment with the fixing hole of the positioning shaft, and the positioning notch cooperates with the positioning protrusion position of the positioning shaft and is interlocked with each other.

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