Pivotally lifting / lowering structure having push-pull locking function, dishwasher, and household appliance

Abstract

Provided are a pivotally lifting / lowering structure having a push-pull locking function, a dishwasher, and a household appliance. When a storage portion (50) needs to be moved from an initial position to a position convenient for a user to use, the storage portion (50) is first pulled out from the initial position, that is, the storage portion (50) is located at a first position; then, the storage portion (50) continues to be pulled to drive a swing portion (120) to rotate to lift the storage portion (50) to a second position; since a guide portion (31) is now located at the inlet of a guide groove (401), the guide portion (31) will slide or roll along the guide groove (401), so that the storage portion (50) will not shake forward and backward when being pivotally lifted; finally, the storage portion (50) is pushed or pulled so that the guide portion (31) slides into a limiting groove (402), that is, the storage portion (50) is located at a locking position, so that the guide portion (31) cannot return in a direction opposite to the extension direction of the guide groove (401), thereby completing the locking of a rotating assembly (10) and a sliding assembly (20). The cooperation between the limiting groove (402) and the guide portion (31) is used to realize the locking of the storage portion (50), reducing the need for additional locking and unlocking devices while satisfying the use convenience, thereby involving low costs.

Description

Push-pull locking pivot lifting structure, dishwasher and household appliance Technical Field

[0001] The present invention relates to the technical field of household appliance structures with a movable storage structure, and in particular to a push-pull locking pivot lifting structure, a dishwasher and a household appliance. Background Art

[0002] Dishwashers, ovens, toasters, refrigerators, and other appliances with internal spaces often feature movable storage structures, such as shelves, containers, cooking material racks, and storage boxes, that extend from the interior of the appliance. Typically, these movable storage structures only have a pull-out function. However, to make the appliance more user-friendly and convenient, the bottommost movable storage structure can be raised and lowered, in addition to being able to pull out.

[0003] In the prior art, in order to ensure that the movable storage structure can be maintained at a specified height after being raised, a locking structure is usually configured. When the locking structure is locked, the movable storage structure can be maintained at a specified height. Obviously, once a locking structure is configured, an unlocking structure needs to be additionally configured to unlock the locking structure, so that the user can lower the movable storage structure and put it back into the lower layer of the internal space. At present, the unlocking structure requires additional settings, including but not limited to motor-triggered unlocking, electromagnet-triggered unlocking, extended arm unlocking (unlocking the locking structure by manually pressing an extended lever), and other solutions. Obviously, no matter which unlocking structure is used, additional costs are required, resulting in higher costs for the corresponding household appliances.

[0004] Therefore, it is necessary to develop a new movable storage structure to solve the technical problem that current household appliances have high costs while meeting the convenience requirements.

[0005] Summary of the Invention

[0006] The purpose of the present invention is to provide a push-pull locking pivot lifting structure, a dishwasher and a household appliance to solve the technical problem that current household appliances have high costs while meeting the convenience requirements.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] A push-pull locking pivot lifting structure, comprising:

[0009] A rotating assembly, the rotating assembly being configured with a reference portion and a swing portion, the swing portion being hinged to the reference portion and capable of rotating around the reference portion;

[0010] A sliding assembly, the sliding assembly comprising a slide rail portion hinged to the swing portion and a sliding portion, the sliding portion being slidably connected to the slide rail portion;

[0011] a first trigger assembly, the first trigger assembly comprising a guide portion fixedly connected to the swing portion;

[0012] a second trigger assembly, the second trigger assembly being fixedly connected to the sliding portion and having a guide groove and a limit groove corresponding to the position of the guide portion;

[0013] The sliding portion or the second trigger assembly is used to set a receiving portion; the guide groove extends along a first direction so that when the swing portion rotates, the guide portion can slide or roll along the guide groove; the extension direction of the limit groove does not coincide with the extension direction of the guide groove at the outlet;

[0014] When the sliding portion extends out to a first distance and is located at a first position, the guide portion is located at an entrance of the guide groove;

[0015] When the guide portion slides or rolls along the guide groove for a second distance and is located at a second position, the guide portion is located at the entrance of the limiting groove;

[0016] When the guide portion is located at the locking position, the guide portion is at least partially located in the limiting groove.

[0017] Optionally, the guide portion includes a first guide post and a second guide post, and the guide groove includes a first guide groove provided corresponding to the position of the first guide post and a second guide groove provided corresponding to the position of the second guide post;

[0018] When the sliding portion extends out to a first distance and is located at a first position, the first guide post is located at the entrance of the first guide groove and abuts against the groove wall of the first guide groove at the entrance, and the second guide post is not in contact with the second guide groove;

[0019] When the guide portion slides or rolls along the guide groove for a second distance and is located at a second position, the second guide post is located in the second guide groove.

[0020] Optionally, the limiting groove is formed on the groove wall of the second guide groove;

[0021] When the guide portion slides or rolls along the guide groove for a second distance and is located at a second position, the second guide post can slide into the limiting groove.

[0022] Optionally, the swing portion includes a first swing arm and a second swing arm rotatably connected to the reference portion, and an end portion of the first swing arm and an end portion of the second swing arm are respectively hinged to the slide rail portion;

[0023] Wherein, the hinge points of the first swing arm and the second swing arm on the reference portion and the hinge points of the first swing arm and the second swing arm on the slide rail portion form a parallelogram.

[0024] Optionally, a buffer groove is correspondingly provided on the second swing arm, the second swing arm is further rotatably connected to a third swing arm, the first guide post is mounted on the third swing arm, and the first guide post is slidably connected to the buffer groove; the second guide post is mounted on the second swing arm;

[0025] A reset unit is connected between the second swing arm and the third swing arm, and the reset unit is used to pull the third swing arm in a direction close to the second swing arm so that the first guide post is located in the first notch of the buffer groove;

[0026] When the sliding portion extends out to a first distance and is located at a first position, the first guide post is pushed by the groove wall of the first guide groove, so that the first guide post is located at the second notch of the buffer groove.

[0027] Optionally, a telescopic unit is rotatably connected to the reference portion, and a telescopic end of the telescopic unit is rotatably connected to the first swing arm; wherein, before the sliding portion rotates by a first angle in the first direction, the rotation direction of the telescopic unit acting on the first swing arm is opposite to the outward swing direction of the first swing arm;

[0028] When the sliding portion rotates by a first angle along the first direction, the rotation direction of the telescopic unit acting on the first swing arm is the same as the outward swing direction of the first swing arm.

[0029] Optionally, a limiting portion for limiting the rotation of the swing portion is provided on the reference portion;

[0030] Before the sliding portion moves to the first position, the first swing arm and the second swing arm at least partially abut against each other, so as to limit the swing portion from rotating in the opposite direction to the first direction.

[0031] Optionally, an extending direction of the limiting groove is opposite to a taking-out direction of the receiving portion.

[0032] A dishwasher comprises a storage portion and the push-pull type locking pivot lifting structure described above, wherein the storage portion is a dishwasher rack.

[0033] A household appliance comprises a storage portion and the push-pull locking pivot lifting structure described above, wherein the storage portion is a shelf or a baking tray.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The push-pull locking pivot lifting structure, dishwasher, and household appliance provided by the present invention are such that when the storage portion needs to be moved from an initial position to a position convenient for user use, the storage portion is first pulled out from the initial position, that is, the storage portion is located in the first position; then, the storage portion is continued to be pulled, driving the swinging portion to rotate, so as to raise the position of the storage portion to the second position. Since the guide portion is now located at the entrance of the guide groove, the guide portion will slide or roll along the guide groove, so that the front and rear positions of the storage portion will not shake when the storage portion pivots and rises; finally, the storage portion is pushed or pulled, so that the guide portion slides into the limiting groove, that is, the storage portion is located in the locked position, so that the guide portion cannot return to its original position in the opposite direction of the extension direction of the guide groove, and the locking of the rotating assembly and the sliding assembly is completed. For the above scheme, the guide groove and the guide portion are first used to cooperate with the swinging portion to achieve the guided lifting of the storage portion, and then the limiting groove and the guide portion are used to cooperate to achieve the locking of the storage portion. Under the premise of meeting the convenience of use, the additional locking and unlocking devices can be reduced, so that the cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0037] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not intended to limit the conditions under which the present invention can be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and objectives that can be achieved by the present invention.

[0038] FIG1 is a schematic diagram of the overall structure of a push-pull locking pivot lifting structure provided by the present invention;

[0039] FIG2 is a schematic diagram of a partially exploded structure of a push-pull type locking pivot lifting structure provided by the present invention;

[0040] FIG3 is a schematic diagram of a partially enlarged structure at point A in FIG2 ;

[0041] FIG4 is a schematic structural diagram of the push-pull locking pivot lifting structure provided by the present invention in an initial state;

[0042] FIG5 is a schematic structural diagram of the push-pull locking pivot lifting structure provided by the present invention in the first state;

[0043] FIG6 is a cross-sectional view of the push-pull locking pivot lifting structure provided by the present invention in a first state;

[0044] FIG7 is a schematic structural diagram of the push-pull locking pivot lifting structure provided by the present invention in a transition state;

[0045] FIG8 is a cross-sectional view of the push-pull locking pivot lifting structure provided by the present invention in a transition state;

[0046] FIG9 is a schematic structural diagram of the push-pull locking pivot lifting structure provided by the present invention in the second state;

[0047] FIG10 is a cross-sectional view of the push-pull locking pivot lifting structure provided by the present invention in the second state;

[0048] FIG11 is a schematic structural diagram of the push-pull locking pivot lifting structure provided by the present invention in a third state;

[0049] FIG12 is a cross-sectional view of the push-pull locking pivot lifting structure provided by the present invention in a third state;

[0050] FIG13 is a schematic structural diagram of the push-pull locking pivot lifting structure provided by the present invention in a fourth state;

[0051] FIG14 is a cross-sectional schematic diagram of the push-pull locking pivot lifting structure provided by the present invention in the fourth state.

[0052] Illustrations: 10, rotating assembly; 110, reference portion; 111, first rotating shaft portion; 112, second rotating shaft portion; 113, limiting portion; 120, swing portion; 130, first swing arm; 140, second swing arm; 141, buffer groove; 141a, first notch; 141b, second notch; 150, third swing arm; 160, reset unit; 170, telescopic unit;

[0053] 20. Sliding assembly; 210. Slide rail; 220. Sliding portion; 230. Third rotating shaft; 240. Fourth rotating shaft; 250. Fifth rotating shaft; 260. Sixth rotating shaft;

[0054] 30. First trigger assembly; 31. Guide portion; 311. First guide post; 312. Second guide post;

[0055] 40. Second trigger assembly; 401. Guide groove; 4011. First guide groove; 4012. Second guide groove; 402. Limiting groove; 403. Initial trigger block; 50. Storage portion; 60. Housing. DETAILED DESCRIPTION

[0056] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0057] In the description of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally located component.

[0058] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0059] As shown in Figures 1 to 14, Figure 1 is a schematic diagram of the overall structure of the push-pull locking pivot lifting structure provided by the present invention, Figure 2 is a schematic diagram of the partial explosion structure of the push-pull locking pivot lifting structure provided by the present invention, Figure 3 is a schematic diagram of the partial enlarged structure at A in Figure 2, Figure 4 is a schematic diagram of the structure of the push-pull locking pivot lifting structure provided by the present invention in the initial state, Figure 5 is a schematic diagram of the structure of the push-pull locking pivot lifting structure provided by the present invention in the first state, Figure 6 is a schematic diagram of the cross-section of the push-pull locking pivot lifting structure provided by the present invention in the first state, Figure 7 is a schematic diagram of the structure of the push-pull locking pivot lifting structure provided by the present invention in the transition state, and Figure 8 is a schematic diagram of the structure of the push-pull locking pivot lifting structure provided by the present invention. Figure 12 is a cross-sectional schematic diagram of the push-pull locking pivot lifting structure provided by the present invention in the third state, Figure 13 is a structural schematic diagram of the push-pull locking pivot lifting structure provided by the present invention in the fourth state, and Figure 14 is a cross-sectional schematic diagram of the push-pull locking pivot lifting structure provided by the present invention in the fourth state.

[0060] Example 1

[0061] The push-pull locking pivot lifting structure provided in this embodiment is used in household appliances with internal space, such as dishwashers, ovens, toasters, refrigerators, etc., and can realize the sliding and lifting of movable storage structures such as shelves, containers, cooking material racks, and storage boxes. In this embodiment, the cost is reduced by optimizing the push-pull locking pivot lifting structure.

[0062] As shown in Figures 1 to 4, the push-pull locking pivot lifting structure in this embodiment includes a rotating assembly 10, a sliding assembly 20, a first trigger assembly 30, and a second trigger assembly 40. The rotating assembly 10 is configured with a reference portion 110 and a swing portion 120, wherein the reference portion 110 can be fixedly connected to the housing 60 as an independent sheet metal component, or the reference portion 110 can also be a part of the housing 60 (for example, a plate integrally welded to the housing 60), and the swing portion 120 is hinged to the reference portion 110 and rotates around the reference portion 110; the sliding assembly 20 includes a slide rail portion 210 hinged to the swing portion 120 and a sliding portion 220, and the sliding portion 220 is slidably connected to the slide rail portion 210. Among them, as shown in Figures 4 to 6, the sliding portion 220 can slide along the slide rail portion 210 in the second direction, which is equivalent to the storage portion 50 being pulled out from the shell 60; as shown in Figures 6 to 10, the swing portion 120 can swing from the position of the first state to the position of the second state. At this time, the swing portion 120 swings obliquely upward relative to the shell 60, which is equivalent to raising the overall height of the slide rail portion 210, that is, raising the height of the storage portion 50.

[0063] The first trigger assembly 30 includes a guide portion 31 fixedly connected to the swing portion 120; the second trigger assembly 40 is fixedly connected to the sliding portion 220, and a guide groove 401 and a limit groove 402 are provided at the position corresponding to the guide portion 31; that is, the second trigger assembly 40 can slide simultaneously with the sliding portion 220.

[0064] Among them, the sliding portion 220 or the second trigger assembly 40 is used to set the storage portion 50, and the setting method includes but is not limited to snap-on connection, integrated connection, etc.; the guide groove 401 extends along the first direction, so that when the swing portion 120 rotates, the guide portion 31 can slide or roll along the guide groove 401; the first direction is the swing direction of the swing portion 120. When the swing portion 120 swings obliquely upward along the first direction, it slides or rolls in the guide groove 401 through the connected guide portion 31, which can limit the position of the second trigger assembly 40, that is, prevent the storage portion 50 and the second trigger assembly 40 from shaking back and forth in the second direction during the process of moving to the second position (that is, during the rising process), that is, through the setting of the guide portion 31 and the guide groove 401, the stability of the swing portion 120 is improved. At the same time, the extension direction of the limiting groove 402 does not coincide with the extension direction of the guide groove 401 at the exit, which means that if the guide portion 31 enters the limiting groove 402, it is difficult to directly reset in the opposite direction along the guide groove 401. For example, after the user pulls the storage portion 50 so that the storage portion 50 is located in the second position (the position of Figures 9 and 10), the swing portion 120 rotates a certain angle along the first direction so that the guide portion 31 is located at the exit of the guide groove 401, that is, at the junction of the guide groove 401 and the limiting groove 402; at this time, the user can push / pull the storage portion 50 to move the guide portion 31 to the exit of the guide groove 401. Correspondingly, it slides into the limit groove 402; since the extension direction of the limit groove 402 does not coincide with the extension direction of the guide groove 401 at the exit, the lock can only be released if the user applies external force to the storage portion 50, pulls / pushes the storage portion 50, and makes the guide portion 31 return to the guide groove 401; that is, after the user releases the lock by pulling / pushing the storage portion 50, the storage portion 50 and its load can be used to make the guide portion 31 return to the entrance of the guide groove 401, or the user can press the storage portion 50 additionally to make the guide portion 31 return to the entrance of the guide groove 401 to lower the height of the storage portion 50.

[0065] Specifically, as shown in Figures 4 to 6, when the sliding portion 220 extends a first distance and is located in the first position, the push-pull locking pivot lifting structure is in the first state, and the guide portion 31 is located at the entrance of the guide groove 401. At this time, the guide portion 31 abuts against the groove wall of the guide groove 401 at the entrance. The groove wall of the guide groove 401 at the entrance is the initial trigger block 403 in Figure 6. The initial trigger block 403 is equivalent to a part of the entrance of the guide groove 401. Therefore, when the initial trigger block 403 contacts the guide portion 31, it means that the storage portion 50 extends from the housing 60 by the first distance, and the storage portion 50 is removed. As shown in Figures 5 to 10, when the guide portion 31 slides along the guide groove 401 to the second distance and is located in the second position, the guide portion 31 is located at the entrance of the limiting groove 402 and can slide into the limiting groove 402. At this time, the guide portion 31 rotates in the first direction, which also means that the swing portion 120 rotates in the first direction, that is, swings outward, thereby increasing the height of the storage portion 50. Then, as shown in Figures 9 to 14, when the guide portion 31 is in the locking position (i.e., the third position or the fourth position), the guide portion 31 is at least partially located in the limiting groove 402, that is, the storage portion 50 can be pushed / pulled to make the guide portion 31 slide into the limiting groove 402, thereby achieving the locking of the storage portion 50.

[0066] Therefore, in the push-pull locking pivot lifting structure of this embodiment, when the storage portion 50 needs to be moved from the initial position (the position of Figure 4) to a position convenient for user use (the position of Figures 11 to 14), the sliding portion 220 is first pulled out to extend the first spacing, that is, the storage portion 50 is located in the first position and pulled out from the initial position; then, the guide portion 31 is now located at the entrance of the guide groove 401, and the storage portion 50 is continued to be pulled, driving the swing portion 120 to rotate, so as to lift the position of the storage portion 50 to the second position, so that the guide portion 31 slides or rolls along the guide groove 401, so that the front and rear positions of the storage portion 50 will not shake when it pivots and rises; finally, the storage portion 50 is pushed or pulled so that the guide portion 31 slides into the limiting groove 402, that is, the storage portion 50 is located in the locked position, so that the guide portion 31 cannot return to its original position in the opposite direction of the extension direction of the guide groove 401, that is, the locking of the rotating assembly 10 and the sliding assembly 20 is completed. For the above solution, the guide groove 401 is first used in conjunction with the guide part 31 and the swing part 120 to realize the guided lifting of the storage part 50, and then the limiting groove 402 is used in conjunction with the guide part 31 to realize the locking of the storage part 50. Under the premise of meeting the convenience of use, the additional locking and unlocking devices can be reduced, so that the cost is reduced.

[0067] Furthermore, as shown in Figures 1 to 3, the guide portion 31 includes a first guide post 311 and a second guide post 312, and the guide groove 401 includes a first guide groove 4011 provided at a position corresponding to the first guide post 311 and a second guide groove 4012 provided at a position corresponding to the second guide post 312. As shown in Figures 4 to 6, when the sliding portion 220 extends a first distance and is located in the first position, the first guide post 311 abuts against the groove wall of the first guide groove 4011 at the entrance, that is, the first guide post 311 abuts against the initial trigger block 403, and the second guide post 312 does not contact the second guide groove 4012. As shown in Figures 7 and 8, when the guide portion 31 slides along the guide groove 401 to a second distance and is located in the second position, the second guide post 312 is located in the second guide groove 4012.

[0068] It can be understood that during the lifting process of the storage portion 50, the front half of the guide pin (the first guide column 311) first slides into the first guide groove 4011. After the storage portion 50 rises to a certain position, the second guide column 312 slides into the second guide groove 4012. The first guide column 311 and the second guide column 312 relay each other, so that the storage portion 50 will not easily shake back and forth (i.e., shake along the second direction) during the lifting process.

[0069] Based on the above embodiment, the limiting groove 402 is opened on the groove wall of the second guide groove 4012; as shown in Figures 9 and 10, when the guide part 31 slides the second distance along the guide groove 401 and is located at the second position, the second guide column 312 can slide into the limiting groove 402.

[0070] It should be added that, along the second direction, the first guide groove 4011 is located outside the second guide groove 4012, and the first guide groove 4011 is first used to cooperate with the first guide column 311; this means that, in the first state, the first guide column 311 first contacts the groove wall of the first guide groove 4011. Since the contact position is equivalent to being located in the front and lower part of the second trigger assembly 40, when the user pulls the storage portion 50, the force point acting on the swing portion 120 is farther than the reference portion 110, that is, the force arm is longer, which can save the user's effort. The locking force of the telescopic unit 170 described later allows the user to more easily pull the storage portion 50 upward. After the storage portion 50 is pulled up a certain distance, as shown in Figures 7 and 8, the second guide post 312 is about to enter the second guide groove 4012, which can further reduce the overall back-and-forth shaking along the second direction, thereby further improving the stability of the lifting of the storage portion 50. And then, as shown in Figures 9 and 10, the second guide post 312 can enter the limiting groove 402 to lock the position of the storage portion 50. It should be noted that in this embodiment, the arrangement of the first guide post 311 and the first guide groove 4011, and the arrangement of the second guide post 312 and the second guide groove 4012, the combination of the guide posts and the guide grooves, can effectively reduce the overall back-and-forth shaking along the second direction, prevent the storage portion 50 from getting stuck during movement, and thus optimize the user experience when lifting and locking the height of the storage portion 50.

[0071] As another optional embodiment, the limiting groove 402 can be opened on the groove wall of the first guide groove 4011; for example, when the user pulls the storage portion 50 from the first position to the second position, the first guide column 311 slides along the first guide groove 4011 along the first direction; when the storage portion 50 moves from the second position to the locked position, the storage portion 50 can be pushed and pulled along the extension direction of the limiting groove 402, so that the first guide column 311 enters the limiting groove 402, and the position locking of the storage portion 50 can also be achieved.

[0072] Furthermore, the swing portion 120 includes a first swing arm 130 and a second swing arm 140 rotatably connected to the reference portion 110, and the end of the first swing arm 130 and the end of the second swing arm 140 are respectively hinged to the slide rail portion 210; wherein, the hinge points of the first swing arm 130 and the second swing arm 140 on the reference portion 110 and the hinge points of the first swing arm 130 and the second swing arm 140 on the slide rail portion 210 form a parallelogram. Specifically, the first swing arm 130 is hinged to the reference portion 110 through the first rotating shaft portion 111, the first swing arm 130 is hinged to the slide rail portion 210 through the third rotating shaft portion 230, the second swing arm 140 is hinged to the reference portion 110 through the second rotating shaft portion 112, and the second swing arm 140 is hinged to the slide rail portion 210 through the fourth rotating shaft portion 240; wherein the above four rotating shaft portions are arranged in a parallelogram, which means that the line between the first rotating shaft portion 111 and the second rotating shaft portion 112 and the line between the third rotating shaft portion 230 and the fourth rotating shaft portion 240 are parallel to each other. The connecting line between them always remains parallel, which means that the angle of the connecting line between the third rotating shaft portion 230 and the fourth rotating shaft portion 240 relative to the second direction remains unchanged, and the sliding rail portion 210 is rotatably connected to the third rotating shaft portion 230 and the fourth rotating shaft portion 240 respectively, which means that the angle of the sliding rail portion 210 relative to the second direction also remains unchanged; on this basis, the sliding rail portion 210 can be always made parallel to the second direction to ensure that when the user changes the position of the storage portion 50, the storage portion 50 always remains horizontal, thereby reducing the tipping phenomenon of items in the storage portion 50.

[0073] As an optional embodiment, as shown in Figures 2 to 14, the second swing arm 140 is correspondingly provided with a buffer groove 141, the buffer groove 141 includes a first slot 141a and a second slot 142b, the second swing arm 140 is also rotatably connected to the third swing arm 150, the first guide column 311 is installed on the third swing arm 150, and the first guide column 311 is slidingly connected to the buffer groove 141; the second guide column 312 is installed on the second swing arm 140. A reset unit 160 is connected between the second swing arm 140 and the third swing arm 150. The reset unit 160 is used to pull the third swing arm 150 in a direction close to the second swing arm 140, so that the first guide column 311 is located at one end of the buffer groove 141, that is, the first guide column 311 is located at the first notch 141a; one end of the buffer groove 141 and the other end of the buffer groove 141 are arranged in sequence along the second direction, that is, the first notch 141a and the second notch 142b are arranged in sequence along the second direction; in this embodiment, the reset unit 160 uses a torsion spring unit, which can provide a constant reset torque. As other optional embodiments, the reset unit 160 can use other elastic structures such as tension springs. The reset unit 160 can apply force to the third swing arm 150 so that the first guide column 311 tends to move toward the first notch 141a of the buffer groove 141.

[0074] Specifically, as shown in Figures 2 to 4 , before the sliding portion 220 extends to the first spacing, the first guide post 311 is located at one end of the buffer groove 141, i.e., at the first notch 141a. As shown in Figures 5 to 6 , when the sliding portion 220 extends to the first spacing and is located in the first position, the first guide post 311 is pushed by the groove wall of the first guide groove 4011, i.e., the first guide post 311 is pushed by the initial trigger block 403, causing the first guide post 311 to be located at the other end of the buffer groove 141, i.e., causing the first guide post 311 to be located at the second notch 141b. When the user pulls the storage portion 50 to the first position, the presence of the reset unit 60 can prevent a harsh collision between the trigger block 403 and the first guide post 311, providing the customer with a cushioned feel and preventing items within the storage portion 50 from colliding with each other.

[0075] The reference portion 110 is also rotatably connected to a telescopic unit 170, the telescopic end of which is rotatably connected to the first swing arm 130. The telescopic unit 170 can be configured using a gas spring, a cylinder unit, an oil cylinder unit, a compression spring, or other structures, with a gas spring being preferred in this embodiment. As shown in Figures 4 to 6 , before the sliding portion 220 rotates in the first direction by a first angle, the rotational direction of the telescopic unit 170 acting on the first swing arm 130 is opposite to the outward swing direction of the first swing arm 130. After the sliding portion 220 rotates in the first direction by a first angle, the rotational direction of the telescopic unit 170 acting on the first swing arm 130 is the same as the outward swing direction of the first swing arm 130. The first direction is the extension direction of the first guide groove 4011. When the first guide post 311 rolls or slides in the first guide groove 4011 along the first direction, a first angle exists, causing the first guide post 311 to rotate correspondingly by the first angle, thereby causing the first swing arm 130 and the second swing arm 140 to rotate by the first angle, thereby driving the slide rail portion 210 and the sliding portion 220 to rotate by the first angle. When the first swing arm 130 rotates, it also drives the hinge point (the sixth rotation axis portion 260) between the first swing arm 130 and the telescopic end of the telescopic unit 170 to rotate. At this angle, the extension direction of the telescopic unit 170 coincides with the first rotation axis portion 111; that is, when the sliding portion 220 rotates by the first angle along the first direction, the extension direction of the telescopic unit 170 coincides with the first rotation axis portion 111, which means that the rotation direction of the telescopic unit 170 acting on the first swing arm 130 at this time will change from being opposite to the outward swing direction of the first swing arm 130 to being the same as the outward swing direction of the first swing arm 130.

[0076] Specifically, as shown in Figures 4 to 6, the fixed end of the telescopic unit 170 is rotatably connected to the reference portion 110 via the fifth rotation axis portion 250, and the telescopic end of the telescopic unit 170 is rotatably connected to the first swing arm 130 via the sixth rotation axis portion 260; wherein, as shown in Figures 4 to 6, before the guide portion 31 slides along the guide groove 401, the sixth rotation axis portion 260 is located above the line connecting the fifth rotation axis portion 250 and the first rotation axis portion 111, so that the rotation direction of the telescopic unit 170 acting on the first swing arm 130 is opposite to the outward swing rotation direction (i.e., the first direction) of the first swing arm 130, that is, the rotation direction of the telescopic unit 170 acting on the first swing arm 130 is opposite to the first direction. On the contrary, at this time, the telescopic unit 170 plays the role of locking the first swing arm 130 and the second swing arm 140, so that the user can lift the storage portion 50 only when the locking force of the telescopic unit 170 is overcome, thereby preventing the swing portion 120 from easily pivoting in the first direction when the storage portion 50 is stretched along the second direction. That is to say, in the process of the storage portion 50 moving from the initial position to the first position, the telescopic unit 170 can apply a torque opposite to the first direction to the first swing arm 130, thereby preventing the first swing arm 130 from being lifted prematurely and avoiding mutual interference of parts (for example, physical collision between the lower storage portion 50 and the upper storage portion 50), thereby improving the overall 14 , when the guide portion 31 slides along the guide groove 401, the sixth rotating shaft portion 260 is located below the line connecting the fifth rotating shaft portion 250 and the first rotating shaft portion 111, so that the rotation direction of the telescopic unit 170 acting on the first swing arm 130 is opposite to the outward swing direction of the first swing arm 130 and is changed to the same as the outward swing direction of the first swing arm 130. The outward swing direction (i.e., the first direction) is the same, that is, the rotation direction of the telescopic unit 170 on the first swing arm 130 is the same as the first direction. At this time, the telescopic unit 170 plays a role in assisting the first swing arm 130 to rotate along the first direction, so as to save the user's force required in the main lifting stage; for example, under light load conditions, the torque provided by the telescopic unit 170 can enable the storage portion 50 to be rotated directly from the first position to the second position without the user having to exert additional force; under heavy load conditions, the torque provided by the telescopic unit 170 can assist the user in rotating the storage portion 50 from the first position to the second position, reducing the force required by the user, thereby optimizing the user's usage experience.

[0077] It should be added that, as shown in Figures 4 to 6, before the storage portion 50 moves to the first position, the swing portion 20 does not rotate in the first direction, and the first swing arm 130 is in contact with the second swing arm 140, that is, the connecting rod structure formed by the first swing arm 130 and the second swing arm 140 is in a dead point state at this time, that is, it is in an extreme position. At this time, the swing portion 20 can only rotate in the first direction and cannot rotate in the opposite direction of the first direction; that is, the above-mentioned arrangement allows the user to avoid the swing portion 20 from rotating in the opposite direction of the first direction when pulling the storage portion 50, thereby preventing the slide rail portion 210 from rotating in the opposite direction of the first direction and preventing internal parts from interfering with each other.

[0078] Based on the above embodiment, preferably, the extending direction of the limiting groove 402 is opposite to the removal direction of the storage portion 50, that is, the extending direction of the limiting groove 402 is the same as the second direction, as shown in Figures 9 to 14. In this case, the user needs to push the storage portion 50 inward to move the limiting groove 402 in the opposite direction of the second direction to above the second guide post 312 to achieve locking of the storage portion 50 in the height direction; in this case, when unlocking is required, it is necessary to correspondingly pull the storage portion 50 to move the limiting groove 402 in the second direction to the outside of the second guide post 312, which can avoid accidental touch during actual use, resulting in mislocking of the storage portion 50. As another optional embodiment, the extending direction of the limiting groove 402 is opposite to the second direction.

[0079] To facilitate understanding by those skilled in the art, the overall working process of the push-pull locking pivot lifting structure is explained below:

[0080] In the initial state, as shown in FIG1 to FIG4 , the receiving portion 50 is received in the housing 60 , and the rotating assembly 10 , the sliding assembly 20 , the first trigger assembly 30 , and the second trigger assembly 40 are all in their respective initial states;

[0081] In the first state, as shown in Figures 5 and 6, when the storage portion 50 extends outward by the first spacing and is located in the first position, the push-pull locking pivot lifting structure is in the first state. At this time, the second trigger assembly 40 and the storage portion 50 move by the first spacing, the first guide post 311 is located at the entrance of the first guide groove 4011, and the first guide post 311 is located at the second notch 141b of the buffer groove 141, and the third swing arm 150 swings outward relative to the second swing arm 140 along the first direction;

[0082] Next, the storage portion 50 is continuously pulled, driving the swing portion 120 to rotate, thereby raising the storage portion 50 to the second position, causing the guide portion 31 to slide or roll along the guide groove 401, thereby preventing the storage portion 50 from shaking when pivoting upward.

[0083] In the transition state, as shown in FIG7 and FIG8 , the receiving portion 50 is pulled, and the sliding portion 220 rotates outward along with the first swing arm 130 and the second swing arm 140 to the transition position. At this time, the first guide post 311 always slides or rolls in the first guide groove 4011, and the second guide post 312 enters the entrance of the second guide groove 4012.

[0084] In the second state, as shown in Figures 9 and 10, the receiving portion 50 is pulled, and the sliding portion 220 rotates outward along with the first swing arm 130 and the second swing arm 140 to the second position (the highest position of the receiving portion 50). At this time, the first guide post 311 still slides or rolls in the first guide groove 4011, but the second guide post 312 is located at the intersection of the second guide groove 4012 and the limiting groove 402, that is, at the entrance of the limiting groove 402, and the swinging portion 120 is restricted by the limiting portion 113.

[0085] In the third state (i.e., the lightly loaded locked position), as shown in Figures 11 and 12, the storage portion 50 is pushed inward, causing the limiting groove 402 to move in the opposite direction of the second direction to above the second guide post 312, thereby locking the storage portion 50 in the height direction. At this time, the storage portion 50 and the items therein are relatively light in weight, and the storage portion 50 can be locked only by the elastic force provided by the telescopic unit 170. Therefore, the second guide post 312 does not contact the groove wall of the limiting groove 402, thereby preventing the storage portion 50 from accidentally falling under the force.

[0086] In the fourth state (i.e., the overloaded locking position), as shown in Figures 13 and 14, the storage portion 50 is pushed inward, so that the limiting groove 402 moves in the opposite direction of the second direction to above the second guide column 312, so as to achieve locking of the storage portion 50 in the height direction. At this time, the storage portion 50 and the items inside it are heavier, so the second guide column 312 contacts the groove wall of the limiting groove 402, and the auxiliary telescopic unit 170 completes the locking of the position of the storage portion 50.

[0087] In summary, the push-pull locking pivot lifting structure in this embodiment has the advantages of low cost, high stability, high precision, and good user experience.

[0088] Example 2

[0089] This embodiment provides a dishwasher, specifically comprising a housing 60, a storage portion 50, and the push-pull, locking, pivoting, and lifting structure of the first embodiment installed in the housing 60. The storage portion 50 is a shelf. The specific structure and technical effects of the push-pull, locking, and pivoting lifting structure are described in the first embodiment. The dishwasher of this embodiment also incorporates this structure and achieves the same technical effects.

[0090] In summary, the dishwasher in this embodiment has the advantages of low cost, high stability, high precision, and good user experience.

[0091] Example 3

[0092] This embodiment provides a household appliance, which can be a dishwasher, oven, toaster, cabinet, refrigerator, etc., and specifically includes a housing 6, a storage portion 50, and the push-pull locking pivoting lifting structure of the first embodiment installed in the housing 60. The storage portion 50 is a container structure such as a shelf or baking tray. The specific structure and technical effects of the push-pull locking pivoting lifting structure are described in the first embodiment. The household appliance of this embodiment adopts this structure and also has its technical effects.

[0093] In summary, the household appliance in this embodiment has the advantages of low cost, high stability, high precision, and good user experience.

[0094] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A push-pull locking pivot lifting structure, characterized in that: include: A rotating assembly (10), the rotating assembly (10) being provided with a reference portion (110) and a swing portion (120), the swing portion (120) being hinged to the reference portion (110) and capable of rotating around the reference portion (110); A sliding assembly (20), the sliding assembly (20) comprising a slide rail portion (210) hinged to the swing portion (120) and a sliding portion (220), the sliding portion (220) being slidably connected to the slide rail portion (210); A first trigger assembly (30), the first trigger assembly (30) comprising a guide portion (31) fixedly connected to the swing portion (120); A second trigger assembly (40), the second trigger assembly (40) is fixedly connected to the sliding portion (220), and is provided with a guide groove (401) and a limit groove (402) at a position corresponding to the guide portion (31); The sliding portion (220) or the second trigger assembly (40) is used to set the receiving portion (50); the guide groove (401) extends along a first direction so that when the swing portion (120) rotates, the guide portion (31) can slide or roll along the guide groove (401); the extension direction of the limiting groove (402) does not coincide with the extension direction of the guide groove (401) at the outlet; When the sliding portion (220) extends to a first distance and is located at a first position, the guide portion (31) is located at the entrance of the guide groove (401); When the guide portion (31) slides or rolls along the guide groove (401) to a second distance and is located at a second position, the guide portion (31) is located at the entrance of the limiting groove (402); When the guide portion (31) is located at the locking position, the guide portion (31) is at least partially located in the limiting groove (402).

2. A push-pull locking pivot lifting structure according to claim 1, characterized in that: The guide portion (31) includes a first guide post (311) and a second guide post (312); the guide groove (401) includes a first guide groove (4011) provided at a position corresponding to the first guide post (311) and a second guide groove (4012) provided at a position corresponding to the second guide post (312); When the sliding portion (220) extends to a first distance and is located at a first position, the first guide post (311) is located at the entrance of the first guide groove (4011) and abuts against the groove wall of the first guide groove (4011) at the entrance, and the second guide post (312) does not contact the second guide groove (4012); When the guide portion (31) slides or rolls along the guide groove (401) at a second distance and is located at a second position, the second guide column (312) is located in the second guide groove (4012).

3. A push-pull locking pivot lifting structure according to claim 2, characterized in that: The limiting groove (402) is formed on the groove wall of the second guide groove (4012); When the guide portion (31) slides or rolls along the guide groove (401) to a second distance and is located at a second position, the second guide column (312) can slide into the limiting groove (402).

4. The push-pull locking pivot lifting structure according to claim 2, characterized in that: The swing portion (120) includes a first swing arm (130) and a second swing arm (140) rotatably connected to the reference portion (110), and an end portion of the first swing arm (130) and an end portion of the second swing arm (140) are respectively hinged to the slide rail portion (210); The hinge points of the first swing arm (130) and the second swing arm (140) on the reference portion (110) and the hinge points of the first swing arm (130) and the second swing arm (140) on the slide rail portion (210) form a parallelogram.

5. The push-pull locking pivot lifting structure according to claim 4, characterized in that: The second swing arm (140) is correspondingly provided with a buffer groove (141), and the second swing arm (140) is also rotatably connected to the third swing arm (150), the first guide column (311) is installed on the third swing arm (150), and the first guide column (311) is slidably connected to the buffer groove (141); the second guide column (312) is installed on the second swing arm (140); A reset unit (160) is connected between the second swing arm (140) and the third swing arm (150), and the reset unit (160) is used to pull the third swing arm (150) in a direction close to the second swing arm (140), so that the first guide column (311) is located in the first notch (141a) of the buffer groove (141); When the sliding portion (220) extends out to a first distance and is located at a first position, the first guide post (311) is pushed by the groove wall of the first guide groove (4011), so that the first guide post (311) is located at the second groove opening (141b) of the buffer groove (141).

6. The push-pull locking pivot lifting structure according to claim 4, characterized in that: The reference portion (110) is further rotatably connected to a telescopic unit (170), and a telescopic end of the telescopic unit (170) is rotatably connected to the first swing arm (130); wherein, before the sliding portion (220) rotates by a first angle along the first direction, the rotation direction of the telescopic unit (170) acting on the first swing arm (130) is opposite to the outward swing direction of the first swing arm (130); When the sliding portion (220) rotates along the first direction by a first angle, the rotation direction of the telescopic unit (170) acting on the first swing arm (130) is the same as the outward swing direction of the first swing arm (130).

7. The push-pull locking pivot lifting structure according to claim 4, characterized in that: The reference portion (110) is provided with a limiting portion (113) for limiting the rotation of the swing portion (120); Before the sliding portion (220) moves to the first position, the first swing arm (130) and the second swing arm (140) at least partially abut against each other, so as to limit the swing portion (120) from rotating in the opposite direction to the first direction.

8. A push-pull locking pivot lifting structure according to any one of claims 1 to 7, characterized in that: The extending direction of the limiting groove (402) is opposite to the taking-out direction of the receiving portion (50).

9. A dishwasher, characterized in that: The invention comprises a storage portion (50) and a push-pull locking pivot lifting structure according to any one of claims 1 to 8, wherein the storage portion (50) is a dishwasher rack.

10. A household appliance, characterized in that: It comprises a storage portion (50) and a push-pull locking pivot lifting structure according to any one of claims 1 to 8, wherein the storage portion (50) is a shelf or a baking tray.

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