Storage rack lifting mechanism and lifting control method

Abstract

The invention relates to a storage rack lifting mechanism and a lifting control method, and belongs to the field of household appliances, the storage rack lifting mechanism comprises a shell internally provided with a cavity and a storage rack located in the cavity, an installation platform is installed in the cavity through a driving connection structure, and the storage rack is installed on the installation platform in a reciprocating motion mode; the driving connecting structure comprises a first driving device, the first driving device comprises a connecting arm, the connecting arm is rotatably mounted on the shell through a mounting shaft, and the mounting platform is mounted on the connecting arm; the first driving device further comprises a first driving motor; the first driving motor is in driving connection with the mounting shaft; the first driving device further comprises an elastic compression piece, the two ends of the elastic compression piece are rotationally installed on the shell and fixed to a driving arm of the installation shaft respectively, and the elastic compression piece is in a compressed state. And two abutting parts for positioning the driving arms are arranged on the shell corresponding to the driving arms. According to the storage rack lifting mechanism, the service life of the storage rack lifting mechanism can be prolonged while the use convenience of the storage rack lifting mechanism is improved.

Description

Technical Field

[0001] The present invention relates to the field of household appliances, and particularly relates to a lifting mechanism for a storage rack and a lifting control method. Background Art

[0002] At present, for household appliances with a lower storage rack, such as dishwashers, disinfection cabinets, etc., in order to facilitate pregnant women / elderly people and other people who are inconvenient to bend down to pick up and place items, the movement of the storage rack starts to be driven by a motor. Driven by the motor, the storage rack can automatically extend and retract. For example, the patent document with the publication number CN118252449A discloses a dishwasher and a control method for the lifting of the lower basket of the dishwasher. It uses the coordinated control of a flat-push motor and a lifting motor to realize the translation and lifting functions of the basket. When users place and take out the tableware in the basket, they do not need to bend down or squat, which can effectively avoid the fatigue or injury of the waist caused by frequent picking up and placing of tableware, and effectively solve the pain point that users need to bend down frequently when picking up and placing tableware.

[0003] However, in this patent document, there is no support structure for the basket. After the basket moves into place, the structure of the translation motor or the lifting motor itself needs to be used to support the basket to fix the position of the basket. And the motor needs to bear the load for a long time in the support state, which is prone to fatigue damage. For example, continuous load causes the motor shaft to bend or the rotor to be eccentric, resulting in a shortened service life of the motor. Based on this, the present invention provides a lifting mechanism for a storage rack and a lifting control method. By setting a support structure for supporting the storage rack, the support function is replaced by the support structure, so as to achieve the effect of extending the service life of the motor. Summary of the Invention

[0004] Based on this, the present invention provides a lifting mechanism for a storage rack, which includes a housing with a cavity formed therein and a storage rack located within the cavity; the cavity extends out of the housing in the horizontal direction a, an opening is formed on the housing, an installation platform is installed in the cavity through a driving connection structure, and the initial position of the installation plane is located within the cavity; the driving connection structure includes a first driving device, the first driving device includes a connecting arm, one end of the connecting arm is fixedly provided with an installation shaft, the installation shaft is rotatably installed on the housing, the installation platform is installed at the end of the connecting arm away from the installation shaft, the first driving device further includes a first driving motor, the first driving motor is drivingly connected to the installation shaft for driving the connecting arm to swing and drive the installation platform to lift through the opening to the terminal position; the storage rack is installed on the installation platform so as to be reciprocally movable in the horizontal direction a, when the installation platform is at the initial position, the storage rack has two working stations, namely position one and position two, position one and position two are respectively located at the starting end and the terminal end of the moving path of the storage rack, wherein, the starting end of the moving path of the storage rack is located within the cavity, and the storage rack can move to the terminal end of the moving path by moving along its moving path towards outside the cavity; the first driving device further includes an elastic compression member, one end of the elastic compression member is rotatably installed on the housing, the other end thereof is rotatably connected to a driving arm, the driving arm is fixedly provided at the installation shaft away from the elastic compression member, and the elastic compression member is in a compressed state; a blocking assembly is provided on the housing corresponding to the connecting arm for blocking the swing of the connecting arm when the installation platform is at the initial position and the terminal position.

[0005] In the present invention, the lifting mechanism for the storage rack is used for household appliances with a lower-layer storage rack, such as dishwashers, disinfection cabinets, etc. Among them, the storage rack is used for placing items, and the driving connection mechanism is used for installing the storage rack to the housing and for driving the storage rack to move to realize the lifting of the storage rack.

[0006] In the present invention, the driving arm fixedly connected to the installation shaft can be an independent component or a part of the connecting arm.

[0007] In the present invention, the process of the storage rack extending out of the cavity is as follows: First, the storage rack translates towards the opening of the housing on the installation platform to position two, and then the first driving device moves the installation platform from the initial position to the terminal position. At this time, the storage rack extends in place, and the user can pick up and place items on the storage rack.

[0008] The process of the storage rack retracting into the cavity is as follows: The first driving device moves the installation platform from the terminal position to the initial position, and then the storage rack translates towards the cavity on the installation platform to position one. At this time, the storage rack moves back in place and enters the cavity to complete the retraction of the storage rack.

[0009] Among them, the specific driving process of the first driving device for the installation platform is as follows: The first driving motor drives the connecting arm to rotate through the installation shaft, driving the installation platform to move between the initial position and the terminal position. During this process, the driving arm will rotate along with the installation shaft. Since an elastic compression member is connected between the driving arm and the housing, and the elastic compression member is always in a compressed state, therefore, after the installation platform moves to the initial position or the terminal position, the elastic force of the elastic compression member acting on the driving arm will press and fix the driving arm against the corresponding blocking component. At this time, the position of the installation platform is fixed by the driving arm and the elastic compression member. Since the storage rack is installed on the installation platform, the position of the storage rack will also be fixed. It can be seen that the present invention can realize the automatic lifting of the storage rack through the first driving device, thus facilitating pregnant women / elderly people and other people who are inconvenient to bend down to perform picking and placing operations on the storage rack. At the same time, the present invention does not need to use a motor to support the storage rack, which can effectively avoid the situation of fatigue damage of the motor, thereby achieving the effect of extending the service life of the motor.

[0010] In addition, in the present invention, preferably, during the process of the installation platform moving from the initial position to the terminal position and from the terminal position to the initial position, the compression amount of the elastic compression member first increases and then decreases. Therefore, during the process of the first driving device driving the installation platform to move from the initial position to the terminal position and from the terminal position to the initial position, since the elastic compression member is always in a compressed state and the compression amount of the elastic compression member first increases and then decreases, preferably, during this process, after the first driving motor drives the connecting arm to cross the position of the maximum compression amount of the elastic compression member, the operation of the first driving motor can be stopped. At this time, the elastic force of the elastic compression member can continue to push the connecting arm to rotate through the driving arm, and still can make the installation platform move in place. In this way, by stopping the first driving motor in advance before the installation platform moves in place, the situation that the motor rotation is blocked after the installation platform moves in place can be avoided, thereby avoiding the situation of sudden increase in coil current, which has a protective effect on the motor and can further extend the service life of the motor.

[0011] In the present invention, the elastic compression member is preferably a gas spring. By hinging the two ends of the gas spring to the housing and the driving arm respectively, the gas spring can be installed between the housing and the driving arm, so as to realize the pushing of the gas spring on the driving arm, thereby pressing the driving arm against the corresponding blocking component and realizing the fixing of the positions of the driving arm and the installation platform.

[0012] In the present invention, the storage rack can be movably mounted on the installation platform through a guide rail. Here, the starting point of the guide rail stroke is the starting end of the moving path of the storage rack, and the ending point of the guide rail stroke is the terminal end of the moving path of the storage rack. Additionally, the starting end and the terminal end of the moving path of the storage rack can also be determined by a limiting structure provided on the installation platform for the storage rack. The limiting structure can be a baffle, a stop block, a stop rod, etc., to improve the controllability of the positions of the starting end and the terminal end of the storage rack.

[0013] Further, the blocking assembly includes two abutting portions provided on the housing. Both of the two abutting portions are located on the swinging path of the driving arm and are respectively used for abutting against the driving arm when the installation platform is in the initial position and the terminal position.

[0014] In the present invention, the abutting portion blocks the swinging of the connecting arm by blocking the swinging of the driving arm, thereby realizing the blocking and positioning of the connecting arm, so that the installation platform mounted on the connecting arm can be fixed at the initial position or the terminal position by the elastic compression member.

[0015] Further, a detection device is provided on the housing corresponding to the position two. The detection device is used to detect the in-place state of the storage rack at the position two in real time.

[0016] In the present invention, the detection device can be a sensor structure such as a photoelectric sensor, an ultrasonic sensor, etc., or a switch structure such as a limit switch, a mechanical switch, a proximity switch, etc., which is used to detect the position of the storage rack in real time to detect whether it reaches the position two, so as to achieve the purpose of monitoring the in-place state of the storage rack at the position two in real time.

[0017] In the present invention, the detection device and the first driving device can be linked, so that after the detection device detects that the storage rack reaches the position two, the first driving device is triggered to lift the installation platform. In this way, the automation degree of the lifting mechanism of the storage rack can be further improved.

[0018] Further, the driving connection mechanism further includes a second driving device. The second driving device includes a push block that is reciprocally movable along the horizontal direction a and is provided on the housing. The push block is located below the storage rack. An insertion plate is provided at the upper end of the push block, and the storage rack is provided with an insertion hole corresponding to the insertion plate and the insertion plate is inserted into the insertion hole.

[0019] In the present invention, the second driving device is used to drive the storage rack on the installation platform to reciprocate along the horizontal direction a when the installation platform is in the initial position, so as to realize the automatic movement of the storage rack on the installation platform. Among them, the push block is drivingly connected to the storage rack by inserting the plug plate on it into the jack. Therefore, after the storage rack moves to position two, when the connecting arm lifts the storage rack upward, the jack can be smoothly separated from the plug plate, that is, the driving connection structure between the storage rack and the push block can be smoothly released. Correspondingly, when the connecting arm drives the installation platform to move to the initial position, the storage rack on it will move to position two. At this time, the jack on the storage rack will be sleeved on the plug plate, so as to smoothly realize the driving connection between the storage rack and the push block.

[0020] Further, the push block is slidably arranged on the housing through a sliding guiding mechanism. The second driving device further includes a threaded rod rotatably arranged on the housing by a second driving motor. A threaded mounting hole corresponding to the threaded rod is formed on the push block, and the push block is mounted on the threaded rod through the threaded mounting hole.

[0021] In the present invention, the threaded rod can be rotatably mounted on the housing through a bearing structure. The second driving motor can be drivingly connected to the threaded rod through a driving connection structure such as a belt drive structure or a chain drive structure. By driving the threaded rod to rotate by the second driving motor, the push block can be pushed to realize the reciprocating movement of the push block on the sliding guiding mechanism, so that the push block drives the storage rack to reciprocate horizontally.

[0022] In the present invention, the sliding guiding mechanism plays a guiding role for the push block and can prevent the push block from rotating along with the threaded rod. Among them, the sliding guiding mechanism can be a mechanical contact type sliding guiding structure, such as a slide rail-slider structure, a guide rod-guide sleeve structure, a planar sliding pair, etc. The sliding guiding mechanism can also be a fixed type sliding guiding structure, such as a ball guide rail, a ball guide rail, a crossed roller guide rail, etc. The sliding guiding mechanism can also be a fluid or magnetic levitation non-contact guiding, such as an air floating guide rail, a hydraulic guide rail, a magnetic levitation guide rail, etc.

[0023] Further, one end of the connecting arm away from the mounting shaft is hinged with a mounting arm, and the installation platform is mounted on the mounting arm; a limiting component is further arranged on the connecting arm. The limiting component includes a first limiting piece and a second limiting piece hinged to each other. The first limiting piece and the second limiting piece are respectively hinged to the mounting shaft and the mounting arm. The hinge points between the connecting arm, the mounting arm, the first limiting piece and the second limiting piece form a parallelogram, and the first limiting piece is fixedly arranged on the housing.

[0024] In the present invention, the installation platform is mounted on the connecting arm through the mounting arm. The connecting arm drives the installation platform to move by driving the mounting arm to move, so as to drive the storage rack on the installation platform to move.

[0025] In the present invention, the hinge points between the connecting arm, the mounting arm, the first limiting member and the second limiting member form a parallelogram (since the mounting shaft is fixedly connected to the connecting arm, the hinge point between the first limiting member and the mounting shaft is the hinge point between the first limiting member and the connecting arm). Moreover, the first limiting member is fixedly arranged on the housing. Therefore, when the first driving motor drives the connecting arm to rotate and thus drives the mounting arm to move, the mounting arm will not deflect, that is, the mounting platform mounted on the mounting arm will not deflect, and thus the storage rack thereon will not deflect either, and always remains in a horizontal state. Among them, the first limiting member can be an independent component or a part of the housing.

[0026] In the present invention, preferably, the number of connecting arms is two and they are arranged oppositely. Correspondingly, the number of mounting arms and limiting components connected to the connecting arms is two, and the mounting platform is fixedly mounted on both mounting arms at the same time. Among them, the number of the first driving devices can be one, which is only drivingly connected to one of the two connecting arms, or the number of the first driving devices can be two, which are respectively drivingly connected to the two connecting arms.

[0027] In addition, the present invention also provides a lifting control method for the above-mentioned storage rack lifting mechanism, including the following steps: Lifting the storage rack: Obtain the in-place state of the storage rack at position two in real time. If the storage rack reaches position two, the first driving motor drives the connecting arm to rotate, and lifts the mounting platform from the initial position to the terminal position.

[0028] In the present invention, the storage rack can be manually pulled by the user or driven by a driving structure arranged on the housing. After the user pulls the storage rack to position two, the first driving motor will lift the mounting platform, thus realizing the automatic lifting of the storage rack.

[0029] Furthermore, the lifting control method of the storage rack lifting mechanism includes the following steps: Lowering the storage rack: After obtaining the instruction to lower the storage rack, the first driving motor drives the connecting arm to rotate, and moves the mounting platform from the terminal position to the initial position.

[0030] In the present invention, during the process of executing the step of lowering the storage rack, the step of lifting the storage rack is not executed, so as to avoid the situation that after the first driving motor drives the mounting platform to move to the initial position, the mounting platform is lifted because the storage rack is at position two at this time. The step of lifting the storage rack needs to be executed after the storage rack reaches position two again.

[0031] Furthermore, the lowering instruction is triggered by a button switch, a control panel or a touch screen structure arranged on the housing.

[0032] Furthermore, a handle is provided on the outer side of the storage rack, and the downward movement instruction is triggered by a wireless trigger structure provided on the handle.

[0033] In the present invention, the wireless trigger structure can be a self-powered wireless switch module, which is used to trigger the downward movement instruction. Specifically, the transmitting module of the self-powered wireless switch module is installed on the handle, and the self-powered device is triggered to generate a wireless signal through mechanical action (such as pressing / pulling). Its receiving module needs to be connected to the control module of the storage rack lifting mechanism, such as a control circuit board.

[0034] Furthermore, in the process of the mounting platform moving from the position one to the position two, and from the position two to the position one, the compression amount of the elastic compression member first increases and then decreases. When the compression amount of the elastic compression member is the largest, the mounting platform is located at a transition position, and the transition position is located between the initial position and the terminal position; when the first driving device drives the mounting platform to move from the initial position to the terminal position, the first driving motor drives the connecting arm to rotate until the mounting platform passes the transition position and stops working; when the first driving device drives the mounting platform to move from the terminal position to the initial position, the first driving motor drives the connecting arm to rotate until the storage rack passes the transition position and stops working.

[0035] In the present invention, when the first drive motor drives the connecting arm to rotate, it is only necessary to make the storage rack pass the transition position, and the connecting arm can continue to rotate under the elastic force of the elastic compression member, thereby driving the installation platform to continue to move to the terminal position or the initial position. In this way, by stopping the first drive motor in advance before the installation platform moves into place, it is possible to avoid the situation where the motor rotation is obstructed after the installation platform moves into place, thereby avoiding the situation where the coil current surges, which has a protective effect on the motor and can further increase the service life of the motor.

[0036] The principle and effect of the present invention are further described below in combination with the above technical solutions and the accompanying drawings: In the present invention, the automatic lifting and lowering of the storage rack can be realized by the setting of the first driving device, so that it can be convenient for pregnant women / elderly people who are not convenient to bend over to perform taking and placing operations on the storage rack. At the same time, the present invention can achieve the supporting effect for the storage rack through the setting of the elastic compression member and the driving arm, so that there is no need to use a motor to support the storage rack, which can effectively avoid fatigue damage of the motor, thereby achieving the effect of prolonging the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a structural schematic diagram of the storage rack lifting mechanism according to an embodiment of the present invention when the mounting platform is in an initial position and the storage rack is in position one; Figure 2 A structural schematic diagram when the installation platform of the storage rack lifting mechanism in the embodiment of the present invention is in the initial position and the storage rack is in position two; Figure 3 is Figure 2 a partial enlarged view of part A in Figure 4 A structural schematic diagram when the installation platform of the storage rack lifting mechanism in the embodiment of the present invention is in the terminal position Figure 1 ; Figure 5 A structural schematic diagram when the installation platform of the storage rack lifting mechanism in the embodiment of the present invention is in the terminal position Figure 2 。 Reference numerals

[0038] 1 - housing, 11 - cavity, 12 - abutting portion, 2 - storage rack, 21 - jack, 22 - handle, 311 - threaded rod, 312 - push block, 3121 - insertion plate, 313 - second driving motor, 321 - driving arm, 322 - mounting shaft, 323 - elastic compression member, 324 - guide rail, 325 - installation platform, 326 - first driving motor. Detailed implementation manners

[0039] For the convenience of those skilled in the art to understand, the present invention will be further described in detail below in conjunction with the drawings and embodiments: Such as Figures 1-5, A lifting mechanism for a storage rack, comprising a housing 1 with a cavity 11 formed therein and a storage rack 2 located within the cavity 11; the cavity 11 extends out of the housing 1 in the horizontal direction a, an opening is formed on the housing 1, and an installation platform 325 is installed in the cavity 11 through a driving connection structure, and the initial position of the installation plane is located within the cavity 11; the driving connection structure includes a first driving device, the first driving device includes a connecting arm, one end of the connecting arm is fixedly provided with a mounting shaft 322, the mounting shaft 322 is rotatably installed on the housing 1, the installation platform 325 is installed at the end of the connecting arm away from the mounting shaft 322, the first driving device further includes a first driving motor 326, and the first driving motor 326 is drivingly connected to the mounting shaft 322 for driving the connecting arm to swing and drive the installation platform 325 to lift through the opening to the terminal position; the storage rack 2 is installed on the installation platform 325 so as to be reciprocally movable in the horizontal direction a, when the installation platform 325 is in the initial position, the storage rack 2 has two working stations, namely position one and position two, and position one and position two are respectively located at the starting end and the terminal end of the moving path of the storage rack 2, wherein, the starting end of the moving path of the storage rack 2 is located within the cavity 11, and the storage rack 2 can move to the terminal end of the moving path by moving along its moving path towards the outside of the cavity 11; the first driving device further includes an elastic compression member 323, one end of the elastic compression member 323 is rotatably installed on the housing 1, the other end thereof is rotatably connected to a driving arm 321, and the end of the driving arm 321 away from the elastic compression member 323 is fixedly provided on the mounting shaft 322, and the elastic compression member 323 is in a compressed state; a blocking assembly is provided on the housing 1 corresponding to the connecting arm for blocking the swing of the connecting arm when the installation platform is in the initial position and the terminal position.

[0040] In the present invention, the lifting mechanism of the storage rack is used for household appliances with a lower storage rack 2, such as dishwashers, disinfection cabinets, etc. Among them, the storage rack 2 is used to place items, and the driving connection mechanism is used to install the storage rack 2 on the housing 1 and to drive the storage rack 2 to move to realize the lifting of the storage rack 2.

[0041] In the present invention, the driving arm 321 fixedly connected to the mounting shaft 322 can be an independent component or a part of the connecting arm.

[0042] In the present invention, the process of the storage rack 2 extending out of the cavity 11 is as follows: First, the storage rack 2 translates on the installation platform 325 towards the opening of the housing 1 to position two, and then the first driving device moves the installation platform 325 from the initial position to the terminal position. At this time, the storage rack 2 extends in place, and the user can pick up and place items on the storage rack 2.

[0043] The process of the storage rack 2 retracting into the cavity 11 is as follows: The first driving device moves the mounting platform 325 from the terminal position to the initial position, and then the storage rack 2 translates towards the cavity 11 on the mounting platform 325 to position one. At this time, the storage rack 2 has been retracted in place and enters the cavity 11, completing the retraction of the storage rack 2.

[0044] Among them, the specific driving process of the first driving device for the mounting platform 325 is: The first driving motor 326 drives the connecting arm to rotate through the mounting shaft 322, driving the mounting platform 325 to move between the initial position and the terminal position. During this process, the driving arm 321 will rotate with the mounting shaft 322. Since an elastic compression member 323 is connected between the driving arm 321 and the housing 1, and the elastic compression member 323 is in a compressed state, therefore, after the mounting platform 325 moves to the initial position or the terminal position, the elastic force of the elastic compression member 323 acting on the driving arm 321 will press and fix the driving arm 321 against the corresponding blocking component. At this time, the position of the mounting platform 325 is fixed by the driving arm 321 and the elastic compression member 323. And since the storage rack 2 is mounted on the mounting platform 325, the position of the storage rack 2 will also be fixed. It can be seen that the present invention can realize the automatic lifting of the storage rack 2 through the first driving device, thus facilitating pregnant women / elderly people and other people who are inconvenient to bend down to perform picking and placing operations on the storage rack 2. At the same time, the present invention does not need to use a motor to support the storage rack 2, which can effectively avoid the situation of fatigue damage of the motor, thereby achieving the effect of prolonging the service life of the motor.

[0045] In addition, in the present invention, preferably, during the process of the mounting platform 325 moving from the initial position to the terminal position and from the terminal position to the initial position, the compression amount of the elastic compression member 323 first increases and then decreases. Therefore, during the process of the first driving device driving the mounting platform 325 to move from the initial position to the terminal position and from the terminal position to the initial position, since the elastic compression member 323 is always in a compressed state and the compression amount of the elastic compression member 323 first increases and then decreases, preferably, during this process, after the first driving motor 326 drives the connecting arm to cross the position of the maximum compression amount of the elastic compression member 323, the operation of the first driving motor 326 can be stopped. At this time, the elastic force of the elastic compression member 323 can continue to push the connecting arm to rotate through the driving arm 321, and still can make the mounting platform 325 move in place. In this way, by stopping the first driving motor 326 in advance before the mounting platform 325 moves in place, the situation that the motor rotation is blocked after the mounting platform 325 moves in place can be avoided, thereby avoiding the situation of sudden increase in coil current, which has a protective effect on the motor and can further prolong the service life of the motor.

[0046] In the present invention, the elastic compression member 323 is preferably a gas spring. By hinging the two ends of the gas spring to the housing 1 and the driving arm 321 respectively, the gas spring is installed between the housing 1 and the driving arm 321, so that the gas spring can push the driving arm 321, thereby pressing the driving arm 321 against the corresponding blocking component, and fixing the positions of the driving arm 321 and the mounting platform 325.

[0047] In the present invention, the storage rack 2 can be movably installed on the mounting platform 325 through the guide rail 324. The starting point of the stroke of the guide rail 324 is the starting end of the moving path of the storage rack 2, and the end point of the stroke of the guide rail 324 is the terminal end of the moving path of the storage rack 2. In addition, the starting end and the terminal end of the moving path of the storage rack 2 can also be determined by the limiting structure provided on the mounting platform 325 for the storage rack. The limiting structure can be a baffle, a stop block, a stop rod, etc., to improve the controllability of the positions of the starting end and the terminal end of the storage rack 2.

[0048] In one embodiment, the blocking component includes two abutting portions 12 provided on the housing 1. The two abutting portions 12 are both located on the swinging path of the driving arm 321 and are respectively used to abut against the driving arm 321 when the mounting platform 325 is in the initial position and the terminal position.

[0049] In this embodiment, the abutting portion 12 blocks the swinging of the connecting arm by blocking the swinging of the driving arm 321, thereby realizing the blocking and positioning of the connecting arm, so that the mounting platform 325 mounted on the connecting arm can be fixed in the initial position or the terminal position by the elastic compression member 323.

[0050] In one embodiment, a detection device is provided on the housing 1 corresponding to the position two. The detection device is used to detect the in-place state of the storage rack 2 at the position two in real time.

[0051] In this embodiment, the detection device can be a sensor structure such as a photoelectric sensor or an ultrasonic sensor, or a switch structure such as a limit switch, a mechanical switch, or a proximity switch, which is used to detect the position of the storage rack 2 in real time to detect whether it reaches the position two, so as to achieve the purpose of monitoring the in-place state of the storage rack 2 at the position two in real time.

[0052] In this embodiment, the detection device and the first driving device can be linked, so that after the detection device detects that the storage rack 2 reaches the position two, the first driving device is triggered to lift the mounting platform 325. In this way, the automation degree of the lifting mechanism of the storage rack can be further improved.

[0053] In one embodiment, the driving connection mechanism further includes a second driving device. The second driving device includes a pushing block 312 disposed on the housing 1 so as to be reciprocally movable along the horizontal direction a. The pushing block 312 is located below the storage rack 2. An insertion plate 3121 is provided at the upper end of the pushing block 312. The storage rack 2 is provided with an insertion hole 21 corresponding to the insertion plate 3121, and the insertion plate 3121 is inserted into the insertion hole 21.

[0054] In this embodiment, the second driving device is configured to drive the storage rack 2 on the mounting platform 325 to reciprocally move along the horizontal direction a when the mounting platform 325 is in the initial position, so as to realize the automatic movement of the storage rack 2 on the mounting platform 325. Among them, the pushing block 312 is drivingly connected to the storage rack 2 by inserting the insertion plate 3121 thereon into the insertion hole 21. Therefore, when the connecting arm lifts the storage rack 2 upward after the storage rack 2 moves to position two, the insertion hole 21 can be smoothly separated from the insertion plate 3121, that is, the driving connection structure between the storage rack 2 and the pushing block 312 can be smoothly released. Correspondingly, when the connecting arm drives the mounting platform 325 to move to the initial position, the storage rack 2 thereon will move to position two. At this time, the insertion hole 21 on the storage rack 2 will be sleeved onto the insertion plate 3121, so as to smoothly realize the driving connection between the storage rack 2 and the pushing block 312.

[0055] In one embodiment, the pushing block 312 is slidably disposed on the housing 1 through a sliding guiding mechanism (not shown in the figure). The second driving device further includes a threaded rod 311 rotatably disposed on the housing 1 by a second driving motor 313. A threaded mounting hole corresponding to the threaded rod 311 is provided on the pushing block 312, and the pushing block 312 is mounted on the threaded rod 311 through the threaded mounting hole. Among them, the second driving motor is mounted on the housing 1.

[0056] In this embodiment, the threaded rod 311 can be rotatably mounted on the housing 1 through a bearing structure. The second driving motor 313 can be drivingly connected to the threaded rod 311 through a driving connection structure such as a belt transmission structure or a chain transmission structure. By driving the threaded rod 311 to rotate through the second driving motor 313, the pushing block 312 can be pushed to realize the reciprocating movement of the pushing block 312 on the sliding guiding mechanism, so that the pushing block 312 drives the storage rack 2 to reciprocally translate on the mounting platform 325, that is, realizes the reciprocating movement of the storage rack 2 between position one and position two.

[0057] In this embodiment, the sliding guiding mechanism plays a guiding role for the pushing block 312, preventing the pushing block 312 from rotating along with the threaded rod 311. The sliding guiding mechanism can be a mechanical contact type sliding guiding structure, such as a slide rail-slider structure, a guide rod-guide sleeve structure, a planar sliding pair, etc. The sliding guiding mechanism can also be a fixed type sliding guiding structure, such as a ball guide rail, a ball guide rail, a crossed roller guide rail, etc. The sliding guiding mechanism can also be a fluid or magnetic levitation non-contact guiding, such as an air-floating guide rail, a hydraulic guide rail, a magnetic levitation guide rail, etc.

[0058] In one embodiment, an installation arm is hinged to one end of the connecting arm away from the installation shaft 322, and the installation platform 325 is installed on the installation arm; a limiting component is further arranged on the connecting arm. The limiting component includes a first limiting member and a second limiting member which are hinged to each other. The first limiting member and the second limiting member are respectively hinged to the installation shaft 322 and the installation arm. The hinge points among the connecting arm, the installation arm, the first limiting member and the second limiting member form a parallelogram, and the first limiting member is fixedly arranged on the housing 1.

[0059] In this embodiment, the installation platform 325 is installed on the connecting arm through the installation arm. The connecting arm drives the installation platform 325 to move by driving the installation arm to move, thereby driving the storage rack 2 on the installation platform 325 to move.

[0060] In this embodiment, the hinge points among the connecting arm, the installation arm, the first limiting member and the second limiting member form a parallelogram (since the installation shaft 322 is fixedly connected to the connecting arm, the hinge point between the first limiting member and the installation shaft 322 is the hinge point between the first limiting member and the connecting arm), and the first limiting member is fixedly arranged on the housing 1. Therefore, when the first driving motor 326 drives the connecting arm to rotate and drive the installation arm to move, the installation arm will not deflect, that is, the installation platform 325 installed on the installation arm will not deflect, and thus the storage rack 2 thereon will not deflect and always remains in a horizontal state. Among them, the first limiting member can be an independent component or a part of the housing 1.

[0061] In this embodiment, preferably, the number of connecting arms is two and they are arranged oppositely. Correspondingly, the number of installation arms and limiting components connected to the connecting arms is two, and the installation platform 325 is fixedly installed on both installation arms at the same time. Among them, the number of the first driving devices can be one, which is only drivingly connected to one of the two connecting arms, or the number of the first driving devices can be two, which are respectively drivingly connected to the two connecting arms.

[0062] In addition, the present invention also provides a lifting control method for the above-mentioned storage rack lifting mechanism, including the following steps: Lifting storage rack: Obtain the in-place state of the storage rack 2 at position two in real time. If the storage rack 2 reaches position two, the first driving motor 326 drives the connecting arm to rotate, and lifts the mounting platform 325 from the initial position to the terminal position.

[0063] In the present invention, the storage rack 2 can be manually pulled by the user or driven by a driving structure provided on the housing 1. After the user pulls the storage rack 2 to position two, the first driving motor 326 will lift the mounting platform 325, thereby realizing the automatic lifting of the storage rack 2.

[0064] In one embodiment, the lifting control method of the storage rack lifting mechanism includes the following steps: Lower the storage rack: After obtaining the instruction to lower the storage rack 2, the first driving motor 326 drives the connecting arm to rotate, and moves the mounting platform 325 from the terminal position to the initial position.

[0065] In this embodiment, during the process of executing the step of lowering the storage rack, the step of lifting the storage rack is not executed, so as to avoid the situation that after the first driving motor 326 drives the mounting platform 325 to move to the initial position, the mounting platform 325 is lifted because the storage rack 2 is at position two at this time. The step of lifting the storage rack 2 needs to be executed after the storage rack 2 reaches position two again.

[0066] In one embodiment, the lowering instruction is triggered by a button switch, a control panel or a touch screen structure provided on the housing 1.

[0067] In one embodiment, a handle 22 is provided on the outer side of the storage rack 2, and the lowering instruction is triggered by a wireless trigger structure provided on the handle 22.

[0068] In this embodiment, the wireless trigger structure can be a self-powered wireless switch module for triggering the lowering instruction. Specifically, the transmitting module of the self-powered wireless switch module is installed on the handle 22, and a wireless signal is generated by triggering the self-powered device through a mechanical action (such as pressing / pulling). Its receiving module needs to be connected to the control module of the storage rack lifting mechanism, such as a control circuit board.

[0069] In one embodiment, during the process of the mounting platform moving from the first position to the second position and from the second position to the first position, the compression amount of the elastic compression member first increases and then decreases. When the compression amount of the elastic compression member 323 is the largest, the mounting platform 325 is located at the transition position, and the transition position is located between the initial position and the terminal position. When the first driving device drives the mounting platform 325 to move from the initial position to the terminal position, the first driving motor 326 drives the connecting arm to rotate until the mounting platform 325 passes the transition position and then stops working. When the first driving device drives the mounting platform 325 to move from the terminal position to the initial position, the first driving motor 326 drives the connecting arm to rotate until the storage rack 2 passes the transition position and then stops working.

[0070] In this embodiment, when the first driving motor 326 drives the connecting arm to rotate, only by making the storage rack 2 pass the transition position, the connecting arm can continue to rotate under the elastic force of the elastic compression member 323, so as to drive the mounting platform 325 to continue to move to the terminal position or the initial position. In this way, by stopping the first driving motor 326 in advance before the mounting platform 325 moves in place, the situation that the motor rotation is blocked after the mounting platform 325 moves in place can be avoided, and thus the situation of a sharp increase in the coil current can be avoided, which has a protective effect on the motor and can further improve the service life of the motor.

[0071] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent shall be subject to the appended claims.

Claims

1. A lifting mechanism for a storage rack, characterized in that, It includes a housing with a cavity formed inside and a storage rack located within the cavity; the cavity extends out of the housing in the horizontal direction a, an opening is formed on the housing, an installation platform is installed in the cavity through a drive connection structure, and the initial position of the installation plane is within the cavity; the drive connection structure includes a first drive device, the first drive device includes a connecting arm, one end of the connecting arm is fixedly provided with a mounting shaft, the mounting shaft is rotatably installed on the housing, the installation platform is installed at the end of the connecting arm away from the mounting shaft, the first drive device further includes a first drive motor, the first drive motor is drivingly connected to the mounting shaft to drive the connecting arm to swing and drive the installation platform to pass through the opening and lift to the terminal position; the storage rack is installed on the installation platform so as to be reciprocally movable in the horizontal direction a, when the installation platform is in the initial position, the storage rack has two working stations, namely position one and position two, and position one and position two are respectively located at the starting end and the terminal end of the moving path of the storage rack; the first drive device further includes an elastic compression member, one end of the elastic compression member is rotatably installed on the housing, the other end thereof is rotatably connected to a drive arm, the end of the drive arm away from the elastic compression member is fixedly provided on the mounting shaft, and the elastic compression member is in a compressed state; a blocking assembly is provided on the housing corresponding to the connecting arm for blocking the swing of the connecting arm when the installation platform is in the initial position and the terminal position.

2. The lifting mechanism of the storage rack according to claim 1, wherein The blocking assembly includes two abutting parts provided on the housing, both of the two abutting parts are located on the swinging path of the drive arm and are respectively used for abutting against the drive arm when the installation platform is in the initial position and the terminal position.

3. The lifting mechanism of the storage rack according to claim 1, characterized in that, A detection device is provided on the housing corresponding to position two, and the detection device is used for detecting the in-place state of the storage rack at position two in real time.

4. The lifting mechanism of the storage rack according to claim 3, characterized in that, The drive connection mechanism further includes a second drive device, the second drive device includes a push block reciprocally movable along the horizontal direction a on the housing, the push block is located below the storage rack, an insertion plate is provided at the upper end of the push block, and the storage rack is provided with an insertion hole corresponding to the insertion plate and the insertion plate is inserted into the insertion hole.

5. The lifting mechanism of the storage rack according to claim 4, characterized in that, The push block is slidably provided on the housing through a sliding guiding mechanism, the second drive device further includes a threaded rod rotatably provided on the housing by a second drive motor, the push block is provided with a threaded mounting hole corresponding to the threaded rod and is installed on the threaded rod through the threaded mounting hole.

6. The lifting mechanism of the storage rack according to any one of claims 1-5, characterized in that, An installation arm is hinged to the end of the connecting arm away from the mounting shaft, and the installation platform is installed on the installation arm; a limiting assembly is further provided on the connecting arm, the limiting assembly includes a first limiting member and a second limiting member hinged to each other, the first limiting member and the second limiting member are respectively hinged to the mounting shaft and the installation arm, the hinge points between the connecting arm, the installation arm, the first limiting member and the second limiting member form a parallelogram, and the first limiting member is fixedly provided on the housing.

7. A lifting control method for a lifting mechanism of a storage rack according to any one of claims 1-6, characterized in that, It includes the following steps: Lifting storage rack: Obtain the in-place status of the storage rack at position two in real time. If the storage rack reaches position two, the first driving motor drives the connecting arm to rotate, and lifts the installation platform from the initial position to the terminal position.

8. The lifting control method according to claim 7, wherein It includes the following steps: Lower the storage rack: After receiving the instruction to lower the storage rack, the first driving motor drives the connecting arm to rotate, and moves the installation platform from the terminal position to the initial position.

9. The lifting control method according to claim 8, wherein, The lowering instruction is triggered by a push-button switch, a control panel or a touch screen structure provided on the housing.

10. The lifting control method according to claim 8, characterized in that, A handle is provided on the outer side of the storage rack, and the lowering instruction is triggered by a wireless trigger structure provided on the handle.

11. The lifting control method according to claim 8, characterized in that, During the process of the installation platform moving from the initial position to the terminal position and from the terminal position to the initial position, the compression amount of the elastic compression member first increases and then decreases. When the compression amount of the elastic compression member is the largest, the installation platform is located at the transition position, and the transition position is located between the initial position and the terminal position; when the first driving device drives the installation platform to move from the initial position to the terminal position, the first driving motor drives the connecting arm to rotate until the installation platform crosses the transition position and then stops working; when the first driving device drives the installation platform to move from the terminal position to the initial position, the first driving motor drives the connecting arm to rotate until the storage rack crosses the transition position and then stops working.

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