Electric suspended ceiling storage rack

Abstract

The utility model discloses an electric suspended ceiling storage rack which comprises a support assembly, a storage platform, a rotating shaft and a driving motor, a winding part is arranged on the rotating shaft, and a cable connected with the storage platform is wound on the winding part; the electric suspended ceiling storage rack further comprises a lower limiting switch, and the lower limiting switch comprises a switch body electrically connected with a control circuit of the driving motor and a triggering part which is connected to the switch body and can move relative to the switch body so as to be in a compressed state or a released state. The triggering part is arranged on the storage platform and abuts against the cable wound on the winding part so that the triggering part can be in a compressed state, when the storage platform descends to the lower limit height or the cable wound on the winding part is completely released, the cable is separated from the triggering part, and the triggering part is switched from the compressed state to the released state so that a control circuit of the driving motor can be cut off so that the storage platform can stop descending. The electric suspended ceiling storage rack is high in safety, and can effectively avoid loosening and chaos of the cable and reverse winding of the cable.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric furniture, in particular to an electric ceiling storage rack. BACKGROUND

[0002] The ceiling storage rack is used for being installed on the ceiling of a warehouse and for placing or storing articles, in order to fully utilize the space in the warehouse, the ceiling storage rack in the prior art is mostly in a lifting type. For example, the patent application for a ceiling storage rack with the announcement number CN116919084A and the name of the applicant being the same as the present application, which comprises a rotating shaft rotatably connected to the ceiling and a driving mechanism for driving the rotating shaft to rotate, and two winding parts are arranged on the rotating shaft, a cable is connected to the winding parts, and a storage platform is connected to the lower end of the cable, the driving mechanism drives the rotating shaft to rotate, so that the rotating shaft winds or releases the cable, and the storage platform is raised or lowered, thereby playing a role of adjusting the height of the storage platform, and the driving mechanism can be manually driven or electrically driven.

[0003] Taking the electrically driven ceiling storage rack as an example, in order to avoid the safety hazard caused by the continuous upward movement of the storage platform when it reaches the set upper limit height, an upper limit switch is generally connected to the ceiling storage rack. For example, the patent application for a ceiling storage rack with the announcement number CN209660851U and the name of the applicant being the same as the present application, which comprises a limiting switch connected to the motor bracket and capable of abutting against a blocking disc on the cable, when the storage platform reaches the set upper limit height, the blocking disc on the cable abuts against the upper limit switch, triggering the upper limit switch to cut off the control circuit of the electric driving mechanism, so that the upward movement of the storage platform is stopped.

[0004] The electric ceiling storage rack in the prior art has some deficiencies in actual use: when the storage platform is lowered to the set lower limit height, if it is continuously lowered due to a misoperation, a safety hazard may be caused; especially when the storage platform touches the ground or abuts against the articles below the storage platform, the cable on the winding part will be loose and disordered, and after the cable is completely released, the cable will be reversely wound, which has to be stopped for processing, thereby affecting the normal use of the storage rack. CONTENT OF THE UTILITY MODEL

[0005] The technical problem to be solved by the present application is to overcome the defects of the above-mentioned related art, and to provide an electric ceiling storage rack with high safety and capable of effectively avoiding the loosening and disorder of the cable and the reverse winding of the cable.

[0006] The technical solution of the present application is to provide an electric ceiling storage rack with the following structure: comprising

[0007] The bracket assembly, the storage platform, the rotating shaft connected to the bracket assembly, and the driving motor for driving the rotating shaft, wherein the rotating shaft is provided with a winding part, and a cable connected to the storage platform is wound on the winding part;

[0008] The lower limit switch comprises a switch body electrically connected to the control circuit of the driving motor, and a trigger part connected to the switch body and movable relative to the switch body to be in a compressed state or a released state, and the trigger part is in contact with the cable wound on the winding part to make the trigger part in the compressed state, and when the storage platform is lowered to the lower limit height or the cable wound on the winding part is completely released, the cable is separated from the trigger part, the trigger part is switched from the compressed state to the released state to cut off the control circuit of the driving motor to stop the storage platform from descending.

[0009] In some embodiments, the trigger part comprises a support frame connected to the switch body, and a trigger shaft connected to the support frame and having an axis parallel to the axis of the rotating shaft, and in the compressed state, the trigger shaft is in contact with the cable wound on the winding part.

[0010] In some embodiments, the trigger shaft is circumferentially connected to the support frame.

[0011] In some embodiments, the outer circumferential wall of the end of the trigger shaft is provided as a conical surface with a gradually decreasing outer diameter from the inside to the outside, for guiding the cable to press the trigger shaft when the winding part winds the cable.

[0012] In some embodiments, both ends of the trigger shaft are provided with the conical surface.

[0013] In some embodiments, the switch body comprises a support connected to the bracket assembly, and a micro switch connected in the support; the support frame is slidingly fitted on the support for triggering the micro switch when the trigger part is in the compressed state, and a resilient member is connected between the support frame and the support, for making the support frame always have a movement tendency away from the support and making the trigger part in the released state.

[0014] In some embodiments, the upper limit switch is connected to the bracket assembly, and the upper limit switch has a trigger lever; the side of the cable close to the storage platform is connected with a flapper matched with the trigger lever, and when the storage platform is raised to the position that the flapper is in contact with the trigger lever, the upper limit switch cuts off the control circuit of the driving motor.

[0015] In some embodiments, the flapper is detachably connected to the cable for adjusting the height of the flapper on the cable.

[0016] In some embodiments, the baffle plate is provided with a clamping groove for clamping the cable, and at least one pressing head is slidingly connected in the baffle plate and extends into the clamping groove and is in pressure contact with the cable in the clamping groove; an elastic body is connected between each pressing head and the baffle plate to make the pressing head always have a movement tendency to press the cable; a button is slidingly connected to the baffle plate, and the inner end of the button is in abutment with the pressing head to drive the pressing head to be separated from the cable.

[0017] In some embodiments, the two pressing heads are respectively arranged on both sides of the clamping groove, and the inner end of the button is in abutment with the two pressing heads respectively.

[0018] In summary, compared with the related art, the electric ceiling storage rack has the following advantages: the electric ceiling storage rack is provided with a lower limit switch, when the storage platform is lowered to the lower limit height, the lower limit switch cuts off the control circuit of the driving motor to stop the lowering of the storage platform, thus the electric ceiling storage rack has high safety in use. The lower limit switch has a trigger part which can be switched between a compressed state and a released state, and the trigger part is in abutment with the cable wound on the winding part to make the trigger part in the compressed state; in other words, the trigger part of the lower limit switch is related to the cable wound on the winding part, when the cable wound on the winding part makes the trigger part in the compressed state, the storage platform can be normally lowered, and when the storage platform is lowered to the set lower limit height or when the cable wound on the winding part is completely released, the cable on the winding part is separated from the trigger part, the trigger part is switched from the compressed state to the released state to make the switch body cut off the control circuit of the driving motor to stop the lowering of the storage platform. The trigger part is used to determine the lower limit height of the lowering of the storage platform by bearing the change of pressure, thus the response can be made quickly, which can effectively avoid the defect that the cable on the winding part is loose and messy when the storage platform is lowered to the ground or is in abutment with the lower object due to misoperation; and the defect of reverse winding of the cable after the cable on the winding part is completely released can be effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of an electric ceiling storage rack according to some embodiments of the present application.

[0020] Figure 2 is another angle structural schematic view of an electric ceiling storage rack according to some embodiments of the present application.

[0021] Figure 3 is a sectional view schematic view of a lower limit switch of an electric ceiling storage rack according to some embodiments of the present application.

[0022] Figure 4 is Figure 2 is an enlarged structural schematic view of part A in

[0023] Figure 5 is a structural schematic diagram of a lower limit position switch according to some embodiments of the present application.

[0024] Figure 6 is another angle structural schematic diagram of a lower limit position switch according to some embodiments of the present application.

[0025] Figure 7 is an assembled structural schematic diagram of a lower limit position switch according to some embodiments of the present application.

[0026] Figure 8 is a structural schematic diagram of a baffle disc of an electric ceiling storage rack according to some embodiments of the present application.

[0027] Figure 9 is an internal structural schematic diagram of a baffle disc of an electric ceiling storage rack according to some embodiments of the present application.

[0028] Figure 10 is a sectional view schematic diagram of a trigger part of a lower limit position switch of an electric ceiling storage rack in a compressed state according to some embodiments of the present application.

[0029] Explanation of reference signs:

[0030] 1, rotating shaft, 100, winding part, 101, intermediate rod, 2, storage platform, 3, cable, 4, support assembly, 400, first mounting bracket, 401, second mounting bracket, 402, third mounting bracket, 5, driving motor, 6, pulley, 7, upper limit position switch, 700, trigger lever, 701, baffle disc, 702, clamping groove, 703, pressure head, 704, elastic body, 705, button, 706, notch, 8, lower limit position switch, 800, support, 801, micro switch, 802, support frame, 803, trigger shaft, 804, elastic member, 805, conical surface, 806, main shaft, 9, controller. DETAILED DESCRIPTION

[0031] Firstly, those skilled in the art should understand that the embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. Those skilled in the art can make adjustments according to the needs in order to adapt to specific application occasions.

[0032] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0033] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature can be "under", "below" and "underneath" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0034] The present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Referring to Figures 1-10 shown, the present application discloses an electric ceiling storage rack, which is used for being installed on the ceiling of a warehouse, and the structure thereof comprises a support assembly 4, a storage platform 2, a rotating shaft 1 rotatably connected to the support assembly 4, and a driving motor 5 for driving the rotating shaft 1 to rotate. The rotating shaft 1 is provided with a winding part 100, and the winding part 100 is wound with a cable 3 connected to the storage platform 2. The driving motor 5 drives the rotating shaft 1 to rotate, so that the winding part 100 on the rotating shaft 1 winds the cable 3, and the storage platform 2 is lifted. Similarly, the driving motor 5 drives the rotating shaft 1 to rotate reversely, so that the cable 3 of the winding part 100 on the rotating shaft 1 is released, and the storage platform 2 is lowered.

[0036] For example, referring to Figure 1 and Figure 2 shown, in the present embodiment, the support assembly 4 of the electric ceiling storage rack comprises four first mounting frames 400 connected to the ceiling, two second mounting frames 401 for rotatably connecting the rotating shaft 1, and a third mounting frame 402 for mounting the driving motor 5. The four first mounting frames 400 are mounted on the ceiling by fasteners, the two second mounting frames 401 are respectively connected to the two first mounting frames 400 and locked by fasteners, and the other two first mounting frames 400 are respectively connected with pulleys 6. The rotating shaft 1 is respectively connected with winding parts 100 coaxial with the rotating shaft 1 at both ends thereof, each winding part 100 is connected with at least one group of cables, each group of cables comprises a first cable and a second cable, the first end of the first cable is fixedly connected with the winding part, and the second end of the first cable is connected with the storage platform after winding around the pulley. The first end of the second cable is fixedly connected with the winding part 100, and the second end of the second cable is connected with the storage platform 2 below the rotating shaft 1. The third mounting frame 402 is connected to one of the second mounting frames 401, the driving motor 5 is mounted in a motor housing and is in transmission connection with the rotating shaft 1 through a gear box, and the motor housing is mounted on the third mounting frame 402.

[0037] In the embodiment, the rotating shaft 1 comprises a middle rod 101 and two winding parts 100 arranged at two ends of the middle rod 101, the two winding parts 100 are limited in the circumferential direction of the middle rod 101 and can be adjusted in the axial direction, specifically, the two winding parts 100 are hollow metal tubes, the central holes of the two winding parts 100 are polygonal holes, and the middle rod 101 is a polygonal rod which is inserted into the central holes of the two winding parts 100 and is matched with the central holes in shape and size, so that the rotating shaft 1 is convenient to install and fold to save the packaging space.

[0038] In the embodiment, two groups of cables 3 are connected to each winding part 100 of the rotating shaft 1, and in other embodiments, one group of cables can also be connected.

[0039] It is understood that the electric ceiling storage rack further comprises a controller 9 and a hand controller, the controller 9 is electrically connected with the driving motor 5 and is used for controlling the driving motor 5 to work, and the hand controller is electrically connected with the controller 9 and is used for sending a lifting instruction to the controller 9.

[0040] In the embodiment, an upper limit switch 7 is connected to the electric ceiling storage rack, the upper limit switch 7 is a mechanical trigger switch, is electrically connected with the control circuit of the driving motor 5, i.e. the controller 9, and is used for cutting off the control circuit of the driving motor 5 when the storage platform 2 rises to the upper limit height; as shown in Figure 1 and Figure 2 The upper limit switch 7 is connected to the bottom of the support assembly 4 and has a trigger lever 700; the side of the cable 3 close to the storage platform 2 is connected with a flapper 701 matched with the trigger lever 700, when the storage platform 2 rises to the position that the flapper 701 abuts against the trigger lever 700, the upper limit switch 7 is triggered, the upper limit switch 7 cuts off the control circuit of the driving motor 5, so that the storage platform 2 stops rising. The trigger lever 700 of the upper limit switch 7 is connected with a micro switch 801 inside, when the flapper 701 abuts against the trigger lever 700, the upper limit switch 7 is triggered. The upper limit switch 7 of the embodiment is a relatively mature technology, and the specific structure and working principle of the upper limit switch 7 are not described in detail.

[0041] In other embodiments, the upper limit switch can also have other structures, such as an optical distance measuring switch installed on the support assembly and used for detecting the distance of the storage platform.

[0042] In the above embodiment, the driving motor 5 drives the rotating shaft 1 to rotate, so that the winding part 100 winds the cable 3, when winding, the cable 3 is wound along the length direction of the winding part 100 in sequence or reciprocatingly in sequence, so that the outer diameter size of the winding part 100 becomes larger; similarly, when the driving motor 5 drives the rotating shaft 1 to rotate in the direction, the winding part 100 releases the cable 3, the cable 3 wound on the winding part 100 is released in sequence, and the outer diameter size of the winding part 100 becomes smaller in sequence.

[0043] It can be understood that if the user misoperates to make the storage platform 2 continue to descend when the storage platform 2 descends to the set lower limit height, a safety hazard can be caused; in particular, when the storage platform 2 descends to the ground or descends to abut against the objects below the storage platform 2, the cable 3 on the winding portion 100 can be loosened and disordered, and after the cable 3 is completely released, a defect of reversely winding the cable 3 can occur; therefore, in the embodiment, as shown in Figure 2 、 Figure 3 and Figure 4 , the electric ceiling storage rack further comprises a lower limit switch 8, which comprises a switch body electrically connected with the control circuit of the driving motor 5 and a trigger portion connected on the switch body and movable relative to the switch body to be in a compressed state or a released state, and the trigger portion abuts against the cable 3 wound on the winding portion 100 to make the trigger portion in the compressed state; when the storage platform 2 descends to the lower limit height or when the cable 3 wound on the winding portion 100 is completely released, the cable 3 is separated from the trigger portion, and the trigger portion is switched from the compressed state to the released state to cut off the control circuit of the driving motor 5.

[0044] In the above embodiment, the lower limit height of the storage platform 2 has the following cases: in a first case, when the storage platform 2 descends to the lower limit height set by the user, the winding on the winding portion of the rotating shaft 1 is not completely released, but only a part of the winding is released; in this case, when the released winding on the winding portion is separated from the trigger portion, the trigger portion is switched from the compressed state to the released state, thereby triggering the switch body to cut off the control circuit of the driving motor 5, so that the storage platform 2 stops at the lower limit height; in the first case, the length of the trigger portion only needs to be adapted to the length of the winding to be released on the winding portion; in a second case, when the storage platform 2 descends to the lower limit height, the winding on the winding portion of the rotating shaft 1 is completely released; in this case, the cable 3 is separated from the trigger portion, the trigger portion is switched from the compressed state to the released state, the switch body cuts off the control circuit of the driving motor 5, so that the storage platform 2 stops at the lower limit height; in the second case, the length of the trigger portion needs to be adapted to the length of the winding portion.

[0045] In the embodiment, the electric ceiling storage rack is provided with the upper limit switch 7 and the lower limit switch 8; when the storage platform 2 ascends to the upper limit height, the upper limit switch 7 cuts off the control circuit of the driving motor 5 to make the storage platform 2 stop ascending; and when the storage platform 2 descends to the lower limit height, the lower limit switch 8 cuts off the control circuit of the driving motor 5 to make the storage platform 2 stop descending; therefore, the electric ceiling storage rack has high safety in use.

[0046] Further, as shown in Figure 3 and Figure 10As shown, the lower limit position switch 8 has a trigger part which can switch between a compressed state and a released state, and the trigger part is in contact with the cable 3 wound on the winding part 100 to make the trigger part in the compressed state, see Figure 10 As shown; in other words, the lower limit position switch 8 is triggered by the cable 3 wound on the winding part 100, and when the cable 3 wound on the winding part 100 makes the trigger part in the compressed state, the object placing platform 2 can normally descend, and when the object placing platform 2 descends to the set lower limit height or when the cable 3 wound on the winding part 100 is completely released, the cable 3 on the winding part 100 is separated from the trigger part, the trigger part is switched from the compressed state to the released state to make the switch body cut off the control circuit of the driving motor 5 to stop the object placing platform 2 from descending. The lower limit height of the object placing platform 2 is determined by the change of the pressure borne by the trigger part, so it can quickly respond, which can effectively avoid the defect that the cable 3 on the winding part is loose and messy when the object placing platform 2 is caused to descend to the ground or is in contact with the lower object due to the misoperation; and effectively avoid the defect that the cable 3 is reversely wound after the cable 3 on the winding part 100 is completely released.

[0047] As can be easily understood, in the above embodiment, the trigger part of the lower limit position switch 8 is a part with a certain length and in contact with the winding on the winding part 100, which can be a square block, a plate or a rod, etc. In the present embodiment, see Figure 5 and Figure 6 As shown, in order to avoid or reduce the noise generated between the trigger part and the winding being released on the winding part 100, the trigger part includes a support frame 802 connected to the switch body and a trigger shaft 803 connected to the support frame 802 and having an axis parallel to the axis of the rotating shaft 1, and the trigger shaft 803 is in contact with the cable 3 wound on the winding part 100. The contact between the trigger shaft 803 and the winding on the winding part 100 is a line contact, the contact area is small, the friction is small, and the noise generated is low.

[0048] In some embodiments, in order to further reduce the friction between the trigger shaft 803 and the winding on the winding part 100 and avoid noise, see Figure 3 and Figure 7 As shown, the trigger shaft 803 is connected to the support frame 802 in a circumferential direction, specifically, a main shaft 806 is connected to the support frame 802, the trigger shaft 803 is sleeved on the main shaft 806 and can rotate around the axis of the main shaft 806, and when the cable 3 on the winding part 100 is released, the trigger shaft 803 rotates in the opposite direction of the winding part 100, the friction between the cable 3 and the trigger shaft 803 is rolling friction, so the friction between them is small, the mute effect is good, and the service life of the lower limit position switch 8 can be prolonged.

[0049] It is easy to understand that, in order to make the trigger shaft 803 be compressed by the cable 3 on the winding part 100, the distance between the outer circumferential wall of the trigger shaft 803 and the outer circumferential wall of the winding part 100 is smaller than the diameter of the cable 3. For this purpose, in order to facilitate the winding on the winding part 100 to smoothly enter the gap between the trigger shaft 803 and the winding part 100 to compress the trigger shaft 803 to trigger the lower limit switch 8, in the embodiment, as shown in Figure 5 , Figure 6 and Figure 7 , the outer circumferential wall of the end of the trigger shaft 803 is provided as a conical surface 805 with gradually decreasing outer diameter from inside to outside, for guiding the cable 3 to press the trigger shaft 803 when the winding part 100 winds the cable 3. That is, the conical surface 805 forms the entry part of the cable 3 on the winding part 100, facilitating the winding part 100 to wind the cable 3 and compress the trigger shaft 803 of the trigger part.

[0050] Further in the above embodiment, as shown in Figure 3 , the conical surface 805 of the end of the trigger shaft 803, that is, the conical surface of the end of the trigger shaft 803 close to the starting winding end of the winding part, is provided; specifically in the embodiment, the both ends of the trigger shaft 803 are provided with the conical surface 805. That is, the both ends of the trigger shaft 803 are provided with the entry part of the cable 3, so that not only when the winding part 100 winds the cable 3, it is convenient to wind the cable 3 and compress the trigger shaft 803 of the trigger part, but also when the winding part 100 releases the cable 3, it is also convenient to release the cable 3 and release the pressure of the cable 3 on the trigger shaft 803.

[0051] In some embodiments, as shown in Figure 3 and Figure 7 , the switch body includes a support 800 connected to the support assembly 4 and a micro switch 801 connected in the support 800, and the micro switch 801 is electrically connected to the controller 9; a support frame 802 is slidingly fitted on the support 800, for triggering the micro switch 801 when the trigger part is in the compressed state, and an elastic member 804 is connected between the support frame 802 and the support 800, and the elastic member 804 is used to make the support frame 802 always have a movement tendency away from the support 800 and make the trigger part in the released state. The cable 3 compresses the trigger shaft 803 on the support frame 802, so that the support frame 802 moves to the direction close to the support 800 to trigger the micro switch 801 against the elastic force of the elastic member 804, so that the trigger part is in the elastic compressed state, and the object platform 2 can be lowered; when the cable 3 on the winding part 100 is released to be separated from the trigger shaft 803, the support frame 802 moves to the direction away from the support 800 under the elastic force of the elastic member 804 to make the trigger part in the released state, at this time the support frame 802 is separated from or does not trigger the micro switch 801 in the support 800, so that the control circuit of the driving motor 5 is disconnected, and the object platform 2 stops descending. Its structure is simple and very convenient to install.

[0052] Further in this embodiment, because the volume of each placed article on the article placing platform 2 is different, the storage space above the article placing platform 2 will change frequently, in order to make rational use of the storage space above the article placing platform 2, people need to adjust the height of the baffle disc 701 on the cable 3 in time; in this embodiment, the baffle disc 701 matched with the triggering lever 700 of the upper limit switch 7 is detachably connected on the cable 3, so that the user can adjust the height of the baffle disc 701 on the cable 3 in real time according to the volume of the article. Thus the storage space above the article placing platform 2 is rationally utilized.

[0053] In this embodiment, as shown in Figure 1 , Figure 8 and Figure 9 , the baffle disc 701 is provided with a clamping groove 702 for clamping the cable 3, and at least one pressing head 703 is slidably connected in the baffle disc 701 and tightly presses the cable 3 in the clamping groove 702, and an elastic body 704 is connected between each pressing head 703 and the baffle disc 701 to make the pressing head 703 always have a movement tendency to tightly press the cable 3; a button 705 is slidably connected on the baffle disc 701, and the inner end of the button 705 abuts against the pressing head 703 for driving the pressing head 703 to separate from the cable 3. When installing the baffle disc 701, only need to clamp the clamping groove 702 on the baffle disc 701 on the cable 3, and the pressing head 703 in the baffle disc 701 tightly presses the cable 3 under the elastic force of the elastic body 704, so that the baffle disc 701 is clamped and fixed on the cable 3; when adjusting the height of the baffle disc 701, only need to press the button 705, the inner end of the button 705 drives the pressing head 703 to move, so that the pressing head 703 separates from the cable 3, thereby the height of the baffle disc 701 can be conveniently adjusted.

[0054] For example, as shown in Figure 8 and Figure 9 , in this embodiment, the pressing head 703 is two, and the two pressing heads 703 are respectively arranged on both sides of the clamping groove 702 and symmetrically distributed, the inner end of the button 705 is arranged between the two pressing heads 703, and the inner end of the button 705 abuts against the two pressing heads 703 respectively. Further, in order to facilitate the inner end of the button 705 to simultaneously drive the two pressing heads 703 to move outward to release the cable 3, two inclined surfaces mutually forming a V shape are arranged on two opposite side walls of the pressing head 703, and the inner end of the button 705 is also arranged as a wedge-shaped structure with thin outside and thick inside, when pressing the button 705, the wedge-shaped structure of the inner end of the button 705 contacts the inclined surfaces on the two pressing heads 703 to apply pressure, so that the two pressing heads 703 quickly move outward to release the cable 3.

[0055] Further, in order to make the clamping between the baffle disc 701 and the cable 3 more firm, the opposite end faces of the two pressing heads 703 are respectively provided with a semicircular notch 706, and when the two pressing heads 703 move towards each other to clamp the cable 3, the two semicircular notches 706 on the two pressing heads 703 are matched to surround and clamp the cable 3.

[0056] In the description of the embodiments of the present application, it should be noted that in the description of the present application, the terms indicating the direction or position relationship such as "inner", "outer" and the like are based on the direction or position relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0057] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "in this embodiment", "specific example" or "some examples" and the like means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electric ceiling-mounted storage rack, characterized in that: include The bracket assembly, the storage platform, the rotating shaft rotatably connected to the bracket assembly, and the drive motor that drives the rotating shaft to rotate, wherein the rotating shaft is provided with a winding part, and a cable connected to the storage platform is wound on the winding part; A lower limit switch includes a switch body electrically connected to the control circuit of the drive motor and a trigger part connected to the switch body and movable relative to the switch body to be in a compressed state or a released state. The trigger part abuts against the cable wound on the winding part to put the trigger part in a compressed state. When the platform descends to the lower limit height or the cable wound on the winding part is completely released, the cable disengages from the trigger part, and the trigger part switches from the compressed state to the released state to cut off the control circuit of the drive motor and stop the platform from descending.

2. The electric ceiling-mounted storage rack according to claim 1, characterized in that: The triggering part includes a support frame connected to the switch body and a trigger shaft connected to the support frame with its axis parallel to the axis of the rotating shaft. In the compressed state, the trigger shaft abuts against the cable wound on the winding part.

3. The electric ceiling-mounted storage rack according to claim 2, characterized in that: The trigger shaft is rotatably connected to the support frame in a circumferential direction.

4. The electric ceiling-mounted storage rack according to claim 2 or 3, characterized in that: The outer circumferential wall at the end of the trigger shaft is configured as a conical surface with an outer diameter that gradually decreases from the inside to the outside, which is used to guide the cable to squeeze the trigger shaft when the cable is wound in the winding section.

5. The electric ceiling-mounted storage rack according to claim 4, characterized in that: The trigger shaft has conical surfaces at both ends.

6. The electric ceiling-mounted storage rack according to claim 2, characterized in that: The switch body includes a support connected to the bracket assembly and a micro switch connected within the support; the support frame is slidably fitted on the support and is used to trigger the micro switch when the trigger part is in a compressed state, and an elastic element is connected between the support frame and the support, the elastic element being used to make the support frame always have a tendency to move away from the support and to make the trigger part in a released state.

7. The electric ceiling-mounted storage rack according to claim 1, characterized in that: It also includes an upper limit switch, which is connected to the bracket assembly and has a trigger lever; the side of the cable near the storage platform is connected to a baffle that is adapted to the trigger lever. When the storage platform rises to the point where the baffle abuts against the trigger lever, the upper limit switch cuts off the control circuit of the drive motor.

8. The electric ceiling-mounted storage rack according to claim 7, characterized in that: The baffle is detachably connected to the cable and is used to adjust the height of the baffle on the cable.

9. The electric ceiling-mounted storage rack according to claim 8, characterized in that: The baffle is provided with a slot for inserting a cable, and at least one pressure head is slidably connected inside the baffle, extending into the slot and pressing against the cable inside the slot. Each pressure head is connected to the baffle with an elastic body that ensures that the pressure head always has a tendency to press against the cable. A button is slidably connected to the baffle, and the inner end of the button abuts against the pressure head to drive the pressure head to disengage from the cable.

10. The electric ceiling-mounted storage rack according to claim 9, characterized in that: There are two pressure heads, which are respectively disposed on both sides of the slot, and the inner ends of the button abut against the two pressure heads respectively.

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