A tension spring adjusting mechanism and a dishwasher

Abstract

The utility model relates to the technical field of home appliance parts, especially relates to a tension spring adjusting mechanism and a dish-washing machine, which comprise: elastic piece support frame, tensioned elastic piece, pull rope and slidable structure. The elastic piece support frame is installed on the rack of the dish-washing machine, the connecting end of the tensioned elastic piece is installed on the elastic piece support frame, the pre-tightening end of the pull rope is connected with the tensioned end of the tensioned elastic piece, and the other end of the pull rope is an active force-adding end, the slidable structure is connected with a driving piece, the driving piece can be locked on the rack of the dish-washing machine, the slidable structure has a winding part, the pull rope is connected to the winding part, and the active force-adding end is used for connecting the box door of the dish-washing machine. It reduces the difficulty of balancing the gravity of the box door.

Description

Technical Field

[0001] This utility model relates to the field of home appliance components technology, and in particular to a tension spring adjustment mechanism and a dishwasher. Background Technology

[0002] A tension spring adjustment mechanism is a mechanical mechanism specifically designed for adjusting the elasticity of movable structures with hinged doors or requiring elastic balance, including dishwasher doors and various mechanical equipment, to achieve balanced hovering and position control.

[0003] In existing dishwashers, the elasticity of a tension spring is usually used to balance the weight of the cabinet door, allowing the door to hover at any tilt angle without falling or bouncing back. One end of the tension spring is connected to the cabinet door, and the other end is fixed by a bolt threaded connection to the base. When the weight of the cabinet door changes or the tension spring becomes fatigued, the bolt needs to be rotated to adjust the initial elongation of the tension spring, thereby changing the elasticity to balance the cabinet door. However, since the tension spring is fixed only by the threaded structure of the bolt, it is difficult to form a stable constraint on the tension spring, which increases the difficulty of balancing the weight of the cabinet door. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a tension spring adjustment mechanism and a dishwasher, which reduces the difficulty of balancing the weight of the cabinet door.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A tension spring adjusting mechanism for a dishwasher includes:

[0007] An elastic support frame is mounted on the rack of the dishwasher;

[0008] A tension elastic element, wherein the connecting end of the tension elastic element is mounted on the elastic element support frame;

[0009] A pull rope, wherein the pre-tensioned end of the pull rope is connected to the tensioned end of the tensioned elastic element, and the other end of the pull rope is the active force-applying end;

[0010] A sliding structure is provided, wherein a drive member is connected to the sliding structure and the drive member is capable of locking to the dishwasher frame; the sliding structure has a winding part, the pull rope is wound around the winding part, and the active force-applying end is used to connect to the dishwasher door.

[0011] Furthermore, the winding portion slides and rubs against the pull rope.

[0012] Furthermore, the tension spring adjustment mechanism for a dishwasher also includes a frame, with the front end and rear end of the dishwasher located on opposite sides. The front end is used to install the dishwasher door. The elastic support frame is installed at the rear end, and the slidable structure is installed at the front end.

[0013] Furthermore, the driving element is located at the front end.

[0014] Furthermore, the tension spring adjustment mechanism for a dishwasher also includes a guide frame, the guide frame having a guide rail, the guide frame being mounted on the dishwasher frame; the slidable structure is slidably mounted on the guide rail.

[0015] Furthermore, the guide rail is a horizontal guide groove, and the slidable structure is slidably fitted into the horizontal guide groove.

[0016] Furthermore, the driving component includes a threaded rod and a movable plate; the operating end of the threaded rod abuts against the frame, the threaded rod passes through the movable plate, and is threadedly connected to the movable plate; the slidable structure has interconnected slots for insertion and linkage; the threaded rod passes through the slot for insertion; the movable plate is accommodated in the linkage slot, so as to drive the slidable structure to move relative to the threaded rod along the axial direction of the threaded rod.

[0017] Furthermore, the operating end of the threaded rod abuts against the front end and is located outside the frame.

[0018] Furthermore, the outer wall of the sliding structure is provided with an installation opening, which extends through the insertion slot and the linkage slot.

[0019] Furthermore, the mounting opening faces the guide frame and is covered by the guide frame.

[0020] Furthermore, the extension and retraction direction of the tension elastic element is the same as the sliding direction of the sliding structure.

[0021] Furthermore, the tension elastic element is a tension spring.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] The elastic support frame is installed on the dishwasher frame, thus providing a mounting base for the tension elastic component to connect with the frame, preventing it from shaking or shifting due to the lack of a fixed support point. It provides a stable force-bearing frame for the tension elastic component from the installation source, laying a structural foundation for balancing the weight of the cabinet door in the future.

[0024] Meanwhile, existing dishwashers mostly rely on screws to adjust and fix the tension elastic components. This method is easily affected by factors such as screw mounting hole deviation, thread fit clearance, and uneven manual tightening force, resulting in inconsistent fixing benchmarks for the tension elastic components in different units. During assembly, the initial position and pre-tightening state of each tension elastic component must be individually calibrated, which is not only time-consuming and labor-intensive, but also prone to inconsistent elastic force caused by benchmark deviation. However, by using an elastic component support frame to provide a stable and uniform pulling benchmark for the tension elastic components, and using the preset mounting surface of the elastic component support frame as a uniform reference for the connection end of all tension elastic components, there is no need to repeatedly adjust the benchmark position during assembly. The connection end fixing and initial elastic force adjustment can be completed directly according to the standardized process. This can significantly shorten the unit assembly time in mass production, and ensure that the initial stress state of the tension elastic components of the same batch of dishwashers is highly consistent. It can effectively reduce performance fluctuations such as unstable door suspension and excessively tight door opening and closing caused by benchmark differences in some units, significantly reduce the difficulty of balancing the weight of the door, and thus improve the consistency and reliability of mass production.

[0025] Since the connecting end of the tension elastic element is installed on the elastic element support frame, the connecting end of the tension elastic element is firmly fixed on the elastic element support frame. This clarifies the fixed starting point of the elastic force output of the tension elastic element, prevents the connecting end of the tension elastic element from becoming loose or displaced during the stretching or rebounding process, and ensures that the elastic force of the tension elastic element is always transmitted along the preset direction, avoiding the difficulty of controlling the weight of the balance box door due to the deviation of the elastic force direction.

[0026] Based on the connection between the pre-tensioned end of the pull rope and the tension end of the tension elastic element, and the other end of the pull rope being the active force-applying end, a flexible and stable force transmission bridge is established between the tension elastic element and the box door. This allows the elastic force generated by the tension elastic element to be transmitted completely and without loss to the active force-applying end through the pull rope, avoiding the failure of the elastic force due to connection breaks during transmission. This allows the elastic force of the tension elastic element to act directly on the box door, providing a continuous and stable force source to counteract the weight of the box door.

[0027] The sliding structure is connected to a driving component, which can lock onto the dishwasher frame. The sliding structure has a winding section, around which the pull rope is wound. The active force-applying end is used to connect to the dishwasher door. Thus, the driving component can precisely control and lock the position of the sliding structure on the frame, achieving precise adjustment of its relative position to the connection end of the tension elastic element. At the same time, the constraint effect of the winding section on the pull rope can prevent the pull rope from shifting or falling off when adjusting the relative position, ensuring that the tension of the spring always matches the relative position adjustment range, avoiding deviation in elastic force adjustment due to pull rope misalignment, further stabilizing the elastic force output of the spring, and reducing the difficulty of balancing the weight of the dishwasher door. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural schematic diagram of a tension spring adjustment mechanism for a dishwasher according to the present invention.

[0029] Figure 2 for Figure 1 Side view;

[0030] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0031] Figure 4 for Figure 2 A magnified view of a portion of point B in the middle;

[0032] Figure 5 for Figure 1 A disassembled schematic diagram of the sliding structure, drive components, and guide frame.

[0033] In the diagram: 1. Elastic support frame; 2. Tension elastic element; 21. Connecting end; 22. Tension end; 23. Tension spring; 3. Pull rope; 31. Pre-tightening end; 32. Active force application end; 4. Sliding structure; 41. Winding part; 42. Insertion slot; 43. Linkage slot; 44. Mounting opening; 5. Driving element; 51. Threaded rod; 511. Operating end; 52. Moving plate; 6. Frame; 61. Front end; 62. Rear end; 7. Guide frame; 71. Guide rail; 711. Horizontal guide slot; 8. Steering wheel. Detailed Implementation

[0034] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0035] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] See Figures 1-2 The specific implementation of a preferred embodiment of this utility model is as follows: A tension spring adjustment mechanism for a dishwasher includes: an elastic support frame 1, a tension elastic element 2, a pull rope 3, and a sliding structure 4.

[0038] The elastic support frame 1 is installed on the dishwasher frame 6;

[0039] The connecting end 21 of the tension elastic element 2 is installed on the elastic element support frame 1;

[0040] The pre-tightening end 31 of the pull rope 3 is connected to the tension end 22 of the tension elastic member 2, and the other end of the pull rope 3 is the active force application end 32;

[0041] The slidable structure 4 is connected to a drive member 5, which can be locked to the dishwasher frame 6; the slidable structure 4 has a winding part 41, the pull rope 3 is wound around the winding part 41, and the active force-applying end 32 is used to connect to the dishwasher door.

[0042] During installation, first, align the elastic support frame 1 with the pre-set mounting surface of the dishwasher frame 6 and fix the elastic support frame 1 to the frame 6. Then, insert the connecting end 21 of the tension elastic element 2 into the slot of the elastic support frame 1. Next, connect the pre-tension end 31 of the pull rope 3 to the pull ring or hook of the tension end 22 of the tension elastic element 2, and at the same time, connect the active force-applying end 32 of the pull rope 3 to the pre-set pull ring or hook on the side of the dishwasher door. Finally, wrap the pull rope 3 around the winding part 41 of the sliding structure 4, and adjust the position of the sliding structure 4 on the frame 6 and lock it by using the drive component 5. At this time, the sliding structure 4 will adjust the elastic force of the tension elastic element 2 through the pull rope 3, so that the elastic force of the tension elastic element 2 is balanced with the weight of the door, ensuring that the door can remain stable at any opening angle without sagging or rebounding too quickly.

[0043] Obviously, the elastic support frame 1, installed on the dishwasher frame 6, provides a mounting base for the tension elastic component 2 to connect with the frame 6, preventing it from shaking or shifting due to the lack of a fixed support point. This provides a stable force-bearing frame for the tension elastic component 2 from the installation source, laying a structural foundation for balancing the weight of the cabinet door later. Meanwhile, existing dishwashers often rely directly on screws to adjust and fix the elastic components. This method is easily affected by factors such as screw mounting hole deviations, thread fit clearances, and uneven manual tightening force, resulting in inconsistent fixing benchmarks for the elastic components in different units. During assembly, the initial position and pre-tightening state of each elastic component need to be individually calibrated, which is not only time-consuming and labor-intensive but also prone to elastic force caused by benchmark deviations. Inconsistency issues; however, by using the elastic support frame 1 to provide a stable and uniform pulling reference for the tension elastic element 2, all the connection ends 21 of the tension elastic element 2 use the preset mounting surface of the elastic support frame 1 as a uniform reference; during assembly, there is no need to repeatedly adjust the reference position, and the connection end 21 can be fixed and the initial elastic force adjusted directly according to the standardized process. This can significantly shorten the assembly time of the unit in mass production, and ensure that the initial stress state of the tension elastic element 2 of the same batch of dishwashers is highly consistent. This effectively reduces performance fluctuations such as unstable door suspension and excessively tight door opening and closing caused by reference differences, significantly reduces the difficulty of balancing the weight of the door, and thus improves the consistency and reliability of mass production of the product; based on the The connecting end 21 of the tension elastic element 2 is installed on the elastic element support frame 1, thereby firmly fixing the connecting end 21 of the tension elastic element 2 to the elastic element support frame 1. This clarifies the fixed starting point for the elastic force output of the tension elastic element 2, preventing the connecting end 21 from loosening or shifting during the stretching or rebounding process of the tension elastic element 2. This ensures that the elastic force of the tension elastic element 2 is always transmitted along the preset direction, avoiding the increased difficulty in controlling the weight of the door due to deviation in the elastic force direction. Based on the connection between the pre-tightening end 31 of the pull rope 3 and the tension end 22 of the tension elastic element 2, and the other end of the pull rope 3 being the active force application end 32, a flexible and stable force transmission bridge is established between the tension elastic element 2 and the door, enabling the tension elastic element 2 to achieve the desired tension. The elastic force generated by component 2 can be completely and without loss transmitted to the active force application end 32 through the pull rope 3, avoiding the failure of the elastic force due to connection breakage during transmission, so that the elastic force of the tensioned elastic component 2 can directly act on the cabinet door, providing a continuous and stable force source to counteract the weight of the cabinet door; based on the sliding structure 4 connected to the driving component 5, the driving component 5 can be locked to the rack 6 of the dishwasher; the sliding structure 4 has a winding part 41, the pull rope 3 is wound around the winding part 41, and the active force application end 32 is used to connect to the cabinet door of the dishwasher, so that the position of the sliding structure 4 on the rack 6 can be precisely controlled and locked through the driving component 5, realizing the precise adjustment of its relative position with the connection end 21 of the tensioned elastic component 2;Meanwhile, the constraint effect of the winding part 41 on the pull rope 3 prevents the pull rope 3 from shifting or falling off when adjusting the relative position, ensuring that the tension of the tension spring 23 always matches the adjustment range of the relative position, avoiding deviation in elastic force adjustment due to misalignment of the pull rope 3, further stabilizing the elastic force output of the tension spring 23, and reducing the difficulty of balancing the weight of the box door.

[0044] See Figures 3-5 In this embodiment, to more effectively reduce the difficulty of balancing the weight of the box door, preferably, the winding part 41 and the pull rope 3 slide frictionally. By having the winding part 41 cooperate with the pull rope 3 with an integrated smooth contact surface, the winding structure is simplified; traditional rollers need to be equipped with precision components such as bearings, bushings, and rotating shafts, which can easily cause the pull rope 3 to deviate from the preset trajectory due to loose parts, resulting in a deviation in the direction of elastic force transmission and failure of box door balance; while the winding part 41 with sliding friction is a fixed contact surface, and the pull rope 3 always slides along the arc surface, without displacement due to component shaking, ensuring accurate and continuous elastic force transmission, so that the box door can maintain stable force when suspended at any angle, improving the stability of the overall structure.

[0045] More importantly, during the balancing process of the box door, sliding friction provides effective assistance to the drive component 5: when the sliding structure 4 is moved by the drive component 5, the moderate and stable sliding friction between the winding part 41 and the pull rope 3 effectively prevents the pull rope 3 from slipping and spinning on the surface of the winding part 41, ensuring that the adjusting force output by the drive component 5 is effectively transmitted to the pull rope 3, so that the pull rope 3 can continuously and evenly pull the tension elastic element 2, allowing the tension elastic element 2 to stretch or contract and deform according to the expected range; if a traditional roller structure is used, When the sliding structure 4 moves, the pull rope 3 is prone to relative slippage, causing the tension elastic element 2 to fail to extend and retract synchronously with the movement of the sliding structure 4. This not only significantly reduces the elasticity adjustment efficiency but may also cause adjustment deviations due to the lag in deformation of the tension elastic element 2, thereby disrupting the force balance of the door. In contrast, the sliding friction between the winding part 41 and the pull rope 3 does not require additional rotating parts. It only requires a fixed contact surface to form a reliable fit with the pull rope 3, allowing the deformation of the tension elastic element 2 to precisely match the adjustment range of the drive part 5, thus ensuring the reliability of the elasticity adjustment.

[0046] Furthermore, the tension spring adjustment mechanism for a dishwasher also includes a frame 6, with the front end 61 and rear end 62 of the dishwasher located on opposite sides. The front end 61 is used to install the dishwasher door. The elastic support frame 1 is installed at the rear end 62, and the sliding structure 4 is installed at the front end 61. By arranging the core components according to the dishwasher's functional zones: on the one hand, the rear end 62 serves as a non-operational area for the integrated motor, water system, and other components of the dishwasher. Placing the elastic support frame 1 here avoids spatial interference with the installation structure and opening / closing stroke of the front end 61 door, ensuring smooth opening and closing of the door. On the other hand, the pull rope 3 extends from the elastic support frame 1 at the rear end 62 to the sliding structure 4 at the front end 61, significantly shortening the force transmission path and reducing elasticity loss caused by long-distance transmission of the pull rope 3. Simultaneously, the separate layout of the front end 61 and the rear end 62 makes subsequent maintenance more convenient. Maintenance personnel can inspect the tension elastic element 2 at the rear end 62 and the sliding structure 4 at the front end 61 separately without disassembling the entire frame 6, saving maintenance time.

[0047] Furthermore, the drive component 5 is located at the front end 61. By arranging the drive component 5 near the front end 61 of the cabinet door, when the tension spring 23 fatigues due to long-term use, causing the cabinet door to drop due to decreased elasticity, or when the cabinet door changes gravity due to replacement of parts, the user does not need to move the dishwasher or disassemble the complex water and electrical components at the rear end 62. The user can simply operate the drive component 5 at the front end 61 to adjust the elasticity. At the same time, the user can observe the suspension status of the cabinet door in real time, realizing visual adjustment, reducing the operating threshold for home users, reducing the need for professional on-site repairs, and improving the convenience of product use.

[0048] Furthermore, the tension spring adjustment mechanism for a dishwasher also includes a guide frame 7, which has a guide rail 71 and is mounted on the dishwasher frame 6; the slidable structure 4 is slidably mounted on the guide rail 71. By setting the guide rail 71, the sliding trajectory of the slidable structure 4 can be precisely limited, effectively preventing the slidable structure 4 from shifting left or right or moving up or down during adjustment; at the same time, the displacement of the slidable structure 4 can form a linear correspondence with the extension and contraction of the tension elastic element 2, greatly improving the accuracy of the elastic force adjustment, thereby reducing the difficulty of balancing the door weight; in addition, the guide rail 71 can also share the force of the slidable structure 4, preventing the slidable structure 4 from deforming after long-term stress, and extending the overall service life of the mechanism.

[0049] Furthermore, the guide rail 71 is a horizontal guide groove 711, and the slidable structure 4 is slidably fitted into the horizontal guide groove 711. This fitted structure design further enhances the connection stability between the slidable structure 4 and the horizontal guide groove 711. The groove structure of the horizontal guide groove 711 can constrain the slidable structure 4 from four directions (up, down, left, and right). Even if the dishwasher vibrates during operation, the slidable structure 4 will not displace due to vibration, causing changes in the expansion and contraction of the tension elastic element 2, thereby disrupting the force balance of the cabinet door. In addition, the fitted installation simplifies the assembly process; workers do not need to perform complex positioning and calibration of the slidable structure 4, but only need to embed it into the horizontal guide groove 711 to complete the installation.

[0050] Furthermore, the driving component 5 includes a threaded rod 51 and a movable piece 52; the operating end 511 of the threaded rod 51 abuts against the frame 6, the threaded rod 51 passes through the movable piece 52, and is threadedly connected to the movable piece 52; the slidable structure 4 has an interconnected insertion slot 42 and a linkage slot 43; the threaded rod 51 passes through the insertion slot 42; the movable piece 52 is housed in the linkage slot 43, so as to drive the slidable structure 4 to move relative to the threaded rod 51 along the axial direction of the threaded rod 51. Through the cooperation of the threaded transmission and the linkage slot 43, the elasticity adjustment is made precise and self-locking: on the one hand, the threaded connection has fine-tuning characteristics, and one rotation can drive the slidable structure 4 to move a corresponding distance through the movable piece 52, which can accurately compensate for the small elasticity loss of the tensioned elastic element 2; on the other hand, the self-locking property of the threaded structure can ensure that after adjustment, the threaded rod 51 and the movable piece 52 will not automatically loosen due to vibration or tension, and the slidable structure 4 can be kept in the set position for a long time without frequent readjustment.

[0051] Furthermore, by designing the threaded mating structure independently on the movable piece 52, instead of directly opening a threaded hole on the sliding structure 4, the convenience and cost control of component replacement are greatly improved. If the sliding structure 4 is designed to directly open a hole, when the threaded hole becomes stripped or worn due to long-term use, the entire sliding structure 4, which is larger and more expensive to manufacture, needs to be replaced. Moreover, the sliding structure 4 needs to be machined with high precision during the hole-opening process, which is difficult to process and has a high scrap rate. On the other hand, the movable piece 52, as an independent small component, is small in size, easy to fix, and the thread accuracy is easier to ensure. When the thread of the movable piece 52 is damaged, it is not necessary to disassemble the entire sliding structure 4. The old movable piece 52 can be taken out through the installation opening 44 of the sliding structure 4 and the new movable piece 52 can be replaced. This significantly reduces the cost and difficulty of later maintenance, and also improves the fault tolerance rate during production.

[0052] As an alternative, multiple linkage grooves 43 of the same specification can be set at intervals along the axial direction of the threaded rod 51. In actual adjustment, by taking the moving piece 52 out of the currently adapted linkage groove 43 and re-embedding it into the linkage groove 43 at different axial positions to form a stable fit, the sliding structure 4 can be driven to achieve stepped displacement adjustment along the axial direction of the threaded rod 51.

[0053] Furthermore, the operating end 511 of the threaded rod 51 abuts against the front end 61 and is located outside the frame 6. By exposing the operating end 511 outside the frame 6, users or maintenance personnel can directly access the operating end 511 of the threaded rod 51 without needing to disassemble the front end 61 panel of the dishwasher with professional tools. Adjustment can be completed with just an ordinary screwdriver, reducing the difficulty of balancing the weight of the cabinet door. For example, if a household user finds that the cabinet door is unstable, they can adjust it themselves at any time without waiting for a maintenance personnel to come. In addition, the location of the operating end 511 outside the frame 6 also facilitates daily inspection: users can regularly check whether the operating end 511 is loose, rusted, etc., and perform timely maintenance to prevent the drive component 5 from failing due to corrosion.

[0054] Furthermore, the outer side wall of the sliding structure 4 is provided with an installation opening 44, which extends through the insertion slot 42 and the linkage slot 43. By providing an installation opening 44 on the outer side wall of the sliding structure 4, the threaded rod 51 can be inserted into the insertion slot 42 from the side, and the moving piece 52 can be placed into the linkage slot 43 without disassembling other components, thus avoiding damage to other structures due to disassembly and improving installation efficiency.

[0055] Furthermore, the mounting opening 44 faces the guide frame 7 and is covered by the guide frame 7. By utilizing the existing structure of the guide frame 7 to cover the mounting opening 44, the mechanism design is simplified and the protective effect is enhanced: on the one hand, there is no need to design an additional special cover component; the mounting opening 44 is closed directly by the fit between the guide frame 7 and the sliding structure 4, reducing the number of parts and production costs, while also avoiding the loosening or falling off problems that may occur with an additional cover; on the other hand, the cover of the mounting opening 44 by the guide frame 7 can effectively prevent impurities such as oil stains, food residue, and water vapor inside the dishwasher from entering the feed slot 42 and the linkage slot 43, avoiding jamming of the threaded connection between the threaded rod 51 and the moving piece 52, ensuring that the inside of the drive component 5 remains clean for a long time, extending the service life of the drive component 5, while maintaining smoothness during adjustment and avoiding adjustment jamming.

[0056] Furthermore, the extension and retraction direction of the tension elastic element 2 is the same as the sliding direction of the slidable structure 4. By synchronizing the extension and retraction direction of the tension elastic element 2 with the sliding direction of the slidable structure 4, the utilization rate of the elastic force is maximized. When the slidable structure 4 slides in the horizontal direction, the tension spring 23 also stretches or contracts in the horizontal direction. At this time, the tension spring 23 only bears axial tension and does not generate lateral force, thus avoiding additional damage to the tension elastic element 2 caused by lateral force, thereby extending the service life of the tension elastic element 2, and avoiding elastic force loss caused by lateral force.

[0057] Furthermore, since the movement trajectories of the tension elastic element 2 and the sliding structure 4 are consistent, the length of the pull rope 3 can be designed directly according to the shortest straight distance between the two, which reduces the material cost of the pull rope 3 and reduces local wear caused by multiple bends during long-term use. At the same time, the straight arrangement of the pull rope 3 can avoid the problem of rope entanglement caused by directional deviation, ensuring that the force transmission path is always clear and uninterrupted, further improving the stability of the gravity balance of the cabinet door, and also making the pull rope 3 easier to position during installation, simplifying the assembly process.

[0058] Preferably, the tension spring adjustment mechanism for a dishwasher further includes a steering wheel 8, which is installed between the active force-applying end 32 of the pull rope 3 and the winding part 41. The steering wheel 8 guides the active force-applying end 32 of the pull rope 3, ensuring precise connection with the door. By adding the steering wheel 8, the smoothness of force transmission is improved, better adapting to the arc-shaped movement trajectory when the door opens and closes. Simultaneously, by limiting the transmission path of the pull rope 3 through the steering wheel 8, the problems of pull rope 3 offset and tangling caused by dishwasher vibration are effectively avoided, better adapting to the complex internal layout of the dishwasher and further improving the overall stability of the mechanism.

[0059] Furthermore, the tension elastic element 2 is a tension spring 23. By selecting the tension spring 23 as the tension elastic element, the tension spring 23 has mature and stable elastic characteristics. During the design process, the corresponding parameters of the door weight and the extension and contraction of the tension spring 23 can be accurately calculated to ensure that the mechanism can achieve perfect balance when it leaves the factory. Secondly, the tension spring 23 has a simple structure and can be quickly connected to the slot of the elastic element support frame 1 and the pre-tension end 31 of the pull rope 3 without the need for complex connecting parts, simplifying the assembly process. Finally, the tension spring 23 has low procurement cost and a mature supply chain, making it suitable for mass production and effectively controlling the overall manufacturing cost of the dishwasher.

[0060] The specific usage method is as follows:

[0061] Component Installation: First, distinguish between the front end 61 and rear end 62 of the dishwasher frame 6. Secure the elastic support frame 1 to the pre-set mounting surface of the rear end 62 of the frame 6 using bolts, ensuring no shaking after installation. Next, install the guide frame 7 with the horizontal guide groove 711 onto the front end 61 of the frame 6 using bolts, ensuring the axis of the guide groove is completely aligned with the extension / retraction direction of the tension spring 23. Then, insert the connecting end 21 of the tension spring 23 into the pre-set slot of the elastic support frame 1. Alternatively, the connecting end 21 can be fixed to the elastic support frame 1 using bolts. The tension spring 23 is kept secure and does not twist in its natural state. Then, the sliding structure 4 and drive component 5 are installed. The movable piece 52 is placed into the linkage groove 43, and the sliding structure 4 is then fitted into the horizontal guide groove 711 of the guide frame 7. The threaded rod 51 is inserted into the slot 42 of the sliding structure 4 and threadedly connected to the movable piece 52. The threaded rod 51 is adjusted so that the operating end 511 abuts against the front end 61 of the frame 6 and protrudes outside the frame 6, ensuring that the installation opening 44 of the sliding structure 4 faces the guide frame 7 and is covered by it. Finally, the pre-tensioned end 31 of the pull rope 3 and the tensioned end 22 of the tension spring 23 are connected by a hook or knot and fixed. Then, the active force-applying end 32 of the pull rope 3 is connected to the preset pull ring or hook on the side of the door.

[0062] Spring tension adjustment: First, open the door to three angles: 30°, 45°, and 60°. Release the door and observe the state. If the door drops, it indicates insufficient spring tension; if it automatically springs back, it indicates excessive spring tension. Prepare appropriate tools, such as a flathead screwdriver. If the spring tension is insufficient, rotate the threaded rod 51 counterclockwise to move the sliding structure 4 along the horizontal guide groove 711 towards the front end 61 of the frame 6, increasing the elongation and spring tension of the tension spring 23. If the spring tension is excessive, rotate the threaded rod 51 clockwise to move the sliding structure 4 towards the rear end 62 of the frame 6, decreasing the elongation and spring tension of the tension spring 23. During adjustment, stop the operation after every 1 / 4 turn to test the door's suspension state and avoid errors caused by large adjustments. If fatigue of the tension spring 23 is found during daily use, such as the door slowly dropping from a stable angle, simply fine-tune the threaded rod 51 counterclockwise. If jamming occurs during adjustment, wipe off any oil stains on the surface of the parts or apply silicone-based grease.

[0063] Component Replacement: When replacing the pull rope 3, first disconnect the pull rope 3 from the door, the winding part 41, and the tension spring 23. Remove the old rope, and then wind the new rope around the winding part 41 of the sliding structure 4 along the original path. Connect the pre-tension end 31 of the pull rope 3 to the tension spring 23 and the active force application end 32 to the door in sequence. Ensure that the new rope is not twisted before readjusting the door spring force. When replacing the movable piece 52, move the sliding structure 4 until the old movable piece 52 is exposed from the installation opening 44. Remove the old movable piece 52 from the linkage groove 43 of the sliding structure 4. 2. Insert the new moving piece 52 and ensure it is fully adapted to the thread of the threaded rod 51. Then reset the sliding structure 4, test the smoothness of transmission, and then fine-tune the door spring force. When replacing the tension spring 23, disconnect the connection between the pre-tightening end 31 of the pull rope 3 and the old tension spring 23. Loosen the bolts or clips that fix the old tension spring 23 on the elastic element support frame 1, take out the old tension spring 23, fix the connecting end 21 of the new tension spring 23 on the elastic element support frame 1, connect the tension end 22 to the pre-tightening end 31 of the pull rope 3, and readjust the spring force to ensure that the door can be stably suspended.

[0064] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0066] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A tension spring adjustment mechanism for a dishwasher, characterized in that, include: Elastic support frame (1), said elastic support frame (1) is mounted on the rack (6) of the dishwasher; A tension elastic element (2), the connecting end (21) of which is installed on the elastic element support frame (1); Pull rope (3), the pre-tightening end (31) of the pull rope (3) is connected to the tension end (22) of the tension elastic member (2), and the other end of the pull rope (3) is the active force application end (32). A sliding structure (4) is connected to a drive member (5), which can be locked to the rack (6) of the dishwasher; the sliding structure (4) has a winding part (41), the pull rope (3) is wound around the winding part (41), and the active force-applying end (32) is used to connect to the door of the dishwasher.

2. The tension spring adjustment mechanism for a dishwasher according to claim 1, characterized in that, The winding part (41) slides and rubs against the pull rope (3).

3. A tension spring adjusting mechanism for a dishwasher according to claim 2, characterized in that, The tension spring adjustment mechanism for a dishwasher also includes a frame (6), with the front end (61) and the rear end (62) of the dishwasher on opposite sides. The front end (61) is used to install the dishwasher door; the elastic support frame (1) is installed on the rear end (62), and the sliding structure (4) is installed on the front end (61).

4. A tension spring adjustment mechanism for a dishwasher according to claim 3, characterized in that, The driving component (5) is located at the front end (61).

5. A tension spring adjusting mechanism for a dishwasher according to claim 3, characterized in that, The tension spring adjustment mechanism for a dishwasher further includes a guide frame (7) having a guide rail (71) and the guide frame (7) being mounted on the dishwasher frame (6); the slidable structure (4) is slidably mounted on the guide rail (71).

6. A tension spring adjusting mechanism for a dishwasher according to claim 5, characterized in that, The guide rail (71) is a horizontal guide groove (711), and the slidable structure (4) is slidably fitted into the horizontal guide groove (711).

7. A tension spring adjusting mechanism for a dishwasher according to claim 5, characterized in that, The driving component (5) includes a threaded rod (51) and a movable piece (52); the operating end (511) of the threaded rod (51) abuts against the frame (6), the threaded rod (51) passes through the movable piece (52) and is threadedly connected to the movable piece (52); the slidable structure (4) has a through-hole (42) and a linkage (43) that are interconnected; the threaded rod (51) passes through the through-hole (42); the movable piece (52) is accommodated in the linkage (43) so that it can drive the slidable structure (4) to move relative to the threaded rod (51) along the axial direction of the threaded rod (51).

8. A tension spring adjusting mechanism for a dishwasher according to claim 7, characterized in that, The operating end (511) of the threaded rod (51) abuts against the front end (61) and is located outside the frame (6).

9. A tension spring adjusting mechanism for a dishwasher according to claim 7, characterized in that, The outer side wall of the sliding structure (4) is provided with an installation opening (44), which extends through the through slot (42) and the linkage slot (43).

10. A tension spring adjusting mechanism for a dishwasher according to claim 9, characterized in that, The mounting opening (44) faces the guide frame (7) and is covered by the guide frame (7).

11. A tension spring adjusting mechanism for a dishwasher according to claim 1, characterized in that, The extension and retraction direction of the tension elastic element (2) is the same as the sliding direction of the sliding structure (4).

12. A tension spring adjusting mechanism for a dishwasher according to claim 11, characterized in that, The tension elastic element (2) is a tension spring (23).

13. A dishwasher, characterized in that, Includes the tension spring adjustment mechanism as described in any one of claims 1-12.

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