Lifting device and lifting pillow

Abstract

The utility model discloses a lifting device and a lifting pillow, which comprise a top plate, a bottom plate and a lifting mechanism arranged between the top plate and the bottom plate, the main shaft can be driven by a power source to rotate; the two or more connecting rod shaft assemblies are arranged at the two ends of the main shaft respectively, and each connecting rod shaft assembly comprises a main shaft nut and connecting rods on the two sides; the two or more pairs of lifting connecting rod assemblies are arranged at the two ends of the main shaft through connecting rod shaft assemblies respectively; the lifting connecting rod assembly comprises an upper lifting connecting rod and a lower lifting connecting rod, one ends of the upper lifting connecting rod and the lower lifting connecting rod are hinged through a connecting rod shaft assembly, and the other ends are hinged to the top plate or the bottom plate. The spindle rotates to drive the connecting rod shaft assembly to move along the spindle so as to drive the top plate to lift. The novel lifting mechanism is adopted, and the intelligent detection control mechanism is arranged, so that the adjustable height range of the lifting pillow is larger, the lifting pillow is very stable during lifting, and the experience feeling of a user is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to lifting device technical field, concretely relates to a lifting device and lifting pillow. BACKGROUND

[0002] At present, many daily products or equipment need to adjust height, such as pillow, seat and other products, need to adjust its height according to the specific situation of user, to improve the experience of user.

[0003] Some pillows with lifting function in prior art mostly adopt two equal-length connecting rods to be X-shaped hinged into lifting support to change the height of pillow, such as the lifting pillow disclosed in patent numbers CN2020111964449 and CN2020205867790.

[0004] In the above technical scheme, due to the limitation of lifting support structure, the height range of lifting pillow that can be adjusted is small, and it cannot be lifted to a very high position, which is not suitable for users who need a pillow with high height when lying on one side. At the same time, the lifting support of this structure is not stable enough when lifting, and the experience of users is poor. Therefore, the existing lifting structure cannot meet the lifting needs of users.

[0005] It should be noted that this section aims to provide background or context for the embodiments of the disclosure stated in the claims. The description herein is not admitted to be prior art merely because it is included in this section. SUMMARY

[0006] The utility model embodiment provides a kind of lifting device and lifting pillow to solve the above problems in prior art.

[0007] Firstly, the utility model embodiment provides a kind of lifting device, and the lifting device includes top plate and bottom plate, and lifting mechanism is arranged between top plate and bottom plate, and the lifting mechanism includes:

[0008] Power source;

[0009] Main shaft, both ends have thread structure with equal pitch, and can rotate under the driving of the power source;

[0010] Two or more connecting rod shaft assemblies are arranged at both ends of the main shaft respectively;The connecting rod shaft assembly includes main shaft nut and connecting rod on both sides, and the main shaft nut is threadedly connected on the main shaft;

[0011] Two or more pairs of lifting link assemblies are arranged at two ends of the main shaft through the link shaft assembly; the lifting link assembly comprises an upper lifting link and a lower lifting link, one end of the upper lifting link and the lower lifting link is hinged through the connecting rod, and the other end is hinged with the top plate or the bottom plate;

[0012] The main shaft is rotated to drive the link shaft assembly to move along the main shaft, so as to drive the top plate to lift.

[0013] As a preferred mode of the first aspect of the utility model, the power source is arranged in the power source assembly, and the power source assembly comprises:

[0014] A power source shell is arranged outside the power source, and at least one pair of first sliding grooves is arranged at both sides of the power source shell;

[0015] A drive gear is connected with the output end of the power source;

[0016] A main shaft gear is engaged with the drive gear and is sleeved on the main shaft when the main shaft passes through the power source shell;

[0017] At least one pair of support link assemblies is connected to the power source shell, and two support link assemblies in one pair of support link assemblies are symmetrically arranged at both sides of the power source shell; the support link assembly comprises an upper support link and a lower support link, one end of the upper support link and the lower support link is hinged through a connecting pin, and the other end is hinged with the top plate or the bottom plate; one end of the connecting pin is arranged in the first sliding groove and can slide in the first sliding groove.

[0018] As a preferred mode of the first aspect of the utility model, one pair of first travel switches is arranged at both ends of the first sliding groove.

[0019] As a preferred mode of the first aspect of the utility model, the lifting mechanism further comprises:

[0020] At least one main shaft stabilizing rod is arranged on the main shaft and can rotate around the main shaft, and both ends of the main shaft stabilizing rod can slide on the top plate or the bottom plate in a direction perpendicular to the main shaft, so that the top plate is parallel to the bottom plate when the top plate lifts.

[0021] As a preferred mode of the first aspect of the utility model, the power source is arranged on the main shaft stabilizing rod.

[0022] As a preferred mode of the first aspect of the utility model, the top end of the main shaft stabilizing rod is arranged in a second sliding groove in the lower part of the top plate and can slide in the second sliding groove, and the bottom end of the main shaft stabilizing rod is arranged in a third sliding groove in the upper part of the bottom plate and can slide in the third sliding groove; the second sliding groove and the third sliding groove are perpendicular to the main shaft.

[0023] As a preferred mode of the first aspect of the present application, the second chute is provided with a pair of second travel switches at both ends.

[0024] As a preferred mode of the first aspect of the present application, the main shaft has a first end portion and a second end portion with opposite screw directions.

[0025] The lifting linkage assembly includes at least one pair of first lifting linkage assemblies and at least one pair of second lifting linkage assemblies.

[0026] The at least one pair of first lifting linkage assemblies are arranged at the first end portion, and the at least one pair of second lifting linkage assemblies are arranged at the second end portion.

[0027] When the main shaft rotates, the linkage shaft assembly connected to the first lifting linkage assembly and the linkage shaft assembly connected to the second lifting linkage assembly move in opposite directions along the main shaft.

[0028] As a preferred mode of the first aspect of the present application, the lifting device further comprises:

[0029] Two or more traction members are arranged above the top plate in the axial direction, one end of which is connected to one side of the top of the top plate.

[0030] Two or more tension sensors are arranged on the other side of the top of the top plate, and are respectively connected to the other end of each corresponding traction member.

[0031] A control circuit board is arranged on the other side of the top of the top plate, and is respectively electrically connected to the power source and each tension sensor.

[0032] As a preferred mode of the first aspect of the present application, the lifting device further comprises:

[0033] Two or more adjusting screws are respectively connected to the other end of the corresponding traction member through the corresponding tension sensor.

[0034] As a preferred mode of the first aspect of the present application, the lifting device further comprises:

[0035] Two ridge-shaped portions are arranged on both sides of the top of the top plate and are supported below each traction member to suspend the middle part of each traction member.

[0036] In a second aspect, the present application provides a lifting pillow, comprising a pillow body and a lifting device as described in any one of the first aspect and the preferred modes of the first aspect.

[0037] The lifting device and the lifting pillow provided by the embodiment of the utility model adopt a novel lifting mechanism, drive the top plate lifting through the main shaft driving two pairs or more than two pairs of lifting connecting rod assemblies, so that the lifting pillow can adjust a larger height range, and the lifting is very stable, and the experience of the user is better. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without paying creative labor for the ordinary skilled in the art.

[0039] Figure 1 It is a structure schematic view of the lifting device provided by the embodiment of the utility model;

[0040] Figure 2 It is a front view schematic view of the lifting device; Figure 1

[0041] It is a rear view schematic view of the lifting device; Figure 3 Figure 1 It is a left view schematic view of the lifting device;

[0042] Figure 4 Figure 1 It is a right view schematic view of the lifting device;

[0043] Figure 5 It is a top view schematic view of the lifting device; Figure 1

[0044] It is another structure schematic view of the lifting device provided by the embodiment of the utility model; Figure 6 Figure 1 It is an axial schematic view of the lifting device;

[0045] Figure 7 It is a structure schematic view of the tension sensor in the lifting device provided by the embodiment of the utility model.

[0046] Figure 8 It is a structure schematic view of the tension sensor in the lifting device provided by the embodiment of the utility model. Figure 7

[0047] Figure 9

[0048] Among them:

[0049] 100, top plate, 101, edge-shaped part;

[0050] 200, bottom plate;

[0051] ​​​​​300, lifting mechanism, 301, power source, 302, main shaft, 302-1, first end, 302-2, second end, 303, lifting link assembly, 303-1, upper lifting link, 303-2, lower lifting link, 304, first lifting link assembly, 305, second lifting link assembly, 306, link shaft assembly, 306-1, main shaft nut, 306-2, connecting rod, 307, power source housing, 307-1, first sliding groove, 308, drive gear, 309, main shaft gear, 310, support link assembly, 310-1, upper support link, 310-2, lower support link, 311, connecting pin, 312, traction member, 312-1, traction member pin, 313, tension sensor, 314, control circuit board, 315, adjusting screw, 316, control key, 317, top plate cover, 318, power supply interface, 319, main shaft stabilizing rod, 320, telescopic sleeve. DETAILED DESCRIPTION

[0052] In order to make the personnel in the technical field better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0053] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0054] Referring to Figures 1-6 As shown in the drawings, the embodiment of the present application discloses a lifting device, which comprises a top plate 100 and a bottom plate 200, and a lifting mechanism 300 is arranged between the top plate 100 and the bottom plate 200. The lifting mechanism 300 mainly comprises a power source 301, a main shaft 302, two or more link shaft assemblies 306 and two pairs or more lifting link assemblies. The lifting mechanism 300 can be raised or lowered to drive the top plate 100 to rise and fall, so as to adjust the height of the pillow.

[0055] The power source 301 can be a reduction motor, and the main shaft 302 has thread structures with equal thread pitches at both ends and can rotate under the driving of the power source 301. The thread directions at both ends of the main shaft 302 can be the same or opposite. Each connecting rod shaft assembly 306 is arranged at one end of the main shaft 302, and the connecting rod shaft assembly 306 includes a main shaft nut 306-1 and two connecting rods 306-2 on both sides. The main shaft nut 306-1 is provided with a threaded hole matched with the main shaft 302, and the connecting rod shaft assembly 306 is threadedly connected to the main shaft 302 through the main shaft nut 306-1.

[0056] Each pair of lifting connecting rod assemblies 303 is arranged at both ends of the main shaft 302 through the connecting rod shaft assemblies 306. The number of the connecting rod shaft assemblies 306 is the same as the number of pairs of the lifting connecting rod assemblies 303, and one pair of the lifting connecting rod assemblies 303 is arranged on the main shaft 302 through one connecting rod shaft assembly 306.

[0057] The lifting connecting rod assembly 303 includes an upper lifting connecting rod 303-1 and a lower lifting connecting rod 303-2. One end of each of the upper and lower lifting connecting rods 303-1 and 303-2 is hingedly connected to the connecting rod 306-2 on one side of the main shaft nut 306-1, and the other end is hingedly connected to the top plate 100 or the bottom plate 200. Specifically, the bottom plate 200 is the base of the entire device, and the upper surface thereof is provided with a plurality of reinforcing ribs and connecting holes. The top plate 100 is a movable part of the entire device, and the lower surface thereof is also provided with a plurality of reinforcing ribs and connecting holes. A connecting rod pin is inserted into the through hole on the other end of the upper lifting connecting rod 303-1 and the connecting hole on the top plate 100 to realize the hinged connection of the other end of the upper lifting connecting rod 303-1 to the top plate 100. A connecting rod pin is inserted into the through hole on the other end of the lower lifting connecting rod 303-2 and the connecting hole on the bottom plate 200 to realize the hinged connection of the other end of the lower lifting connecting rod 303-2 to the bottom plate 200.

[0058] Specifically, the upper and lower lifting connecting rods 303-1 and 303-2 have Y-shaped structures and can be connected head to tail, so that the lifting process is smoother, and the range in which the top plate can be raised is larger. The hole pitches of the through holes arranged at the upper and lower ends of each of the upper and lower lifting connecting rods 303-1 and 303-2 are equal, which can ensure the stability of the lifting process.

[0059] When the main shaft 302 rotates under the driving of the power source 301, each connecting rod shaft assembly 306 can be driven to reciprocate along the axial direction of the main shaft 302, thereby driving the other ends of the upper and lower lifting connecting rods 303-1 and 303-2 connected to each connecting rod shaft assembly 306 to simultaneously contract inward or extend outward, so as to drive the top plate 100 to be raised or lowered.

[0060] It should be noted that when two pairs or more pairs of lifting connecting rod assemblies 303 are arranged at any one end of the main shaft 302, the lifting will be more stable and the effect will be better. When multiple pairs of lifting connecting rod assemblies 303 are arranged, the spacing between each connecting rod shaft assembly 306 arranged at the same end of the main shaft 302 is equal, that is, the spacing between each main shaft nut 306-1 screwed on the same end of the main shaft 302 is equal.

[0061] Preferably, in an embodiment of the utility model, the main shaft 302 has a first end portion 302-1 and a second end portion 302-2 with opposite screw directions. Correspondingly, the lifting connecting rod assembly includes at least one pair of first lifting connecting rod assemblies 303 and at least one pair of second lifting connecting rod assemblies 304, and the at least one pair of first lifting connecting rod assemblies 303 are arranged at the first end portion 302-1 of the main shaft 302, and the at least one pair of second lifting connecting rod assemblies 304 are arranged at the second end portion 302-2 of the main shaft 302.

[0062] When the main shaft 302 rotates under the drive of the power source 301, because the screw directions of the first end portion 302-1 and the second end portion 302-2 are opposite, the main shaft 302 converts the rotating motion of the main shaft 302 into the axial motion of the connecting rod shaft assembly 305 relative to the main shaft 302 through the first end portion 302-1 and the second end portion 302-2, and the connecting rod shaft assemblies 306 connected to the first lifting connecting rod assemblies 303 and the connecting rod shaft assemblies 306 connected to the second lifting connecting rod assemblies 304 will move in opposite directions or in opposite directions along the main shaft 302. The main shaft 302 is parallel to the top plate 100 and the bottom plate 200, the screw directions of the first end portion 302-1 and the second end portion 302-2 of the main shaft 302 are opposite, the pitches are equal, and the forces applied to the connecting rod shaft assemblies 306 at both ends are also opposite, so that the connecting rod shaft assemblies 306 push the upper lifting connecting rod 303-1 and the lower lifting connecting rod 303-2 in the first lifting connecting rod assembly 303 and the second lifting connecting rod assembly 304 to rotate around the top plate 100 or the bottom plate 200 at the same time, realizing the simultaneous contraction or expansion of the first lifting connecting rod assembly 303 and the second lifting connecting rod assembly 304, so as to drive the top plate 100 to lift.

[0063] It should be noted that when two pairs or more pairs of lifting connecting rod assemblies 303 are arranged at any one end of the main shaft 302, the lifting will be more stable and the effect will be better. Among them, the spacing between each connecting rod shaft assembly 306 connected to the first lifting connecting rod assembly 303 is the same as the spacing between each connecting rod shaft assembly 306 connected to the second lifting connecting rod assembly 304.

[0064] In this process, refer to Figure 2 and Figure 3In the two ends of the main shaft 302, two pairs of first lifting link assemblies 303 and two pairs of second lifting link assemblies 304 are arranged. On any side of the main shaft 302, two upper lifting links 303-1, the main shaft 302 and the top plate 100 or two lower lifting links 303-2, the main shaft 302 and the bottom plate 200 respectively form a parallelogram-shaped composite four-bar linkage mechanism. When the main shaft 302 rotates, the connecting rod shaft assemblies 306 connected with the first lifting link assemblies 303 and the connecting rod shaft assemblies 306 connected with the second lifting link assemblies 304 move in opposite directions along the main shaft 302. The spacing between each connecting rod shaft assembly 306 connected with the first lifting link assemblies 303 and the spacing between each connecting rod shaft assembly 306 connected with the second lifting link assemblies 304 are the same. The above-mentioned composite four-bar linkage mechanism ensures that the bottom plate 200, the main shaft 302, the connecting rod shaft assemblies 306 and the top plate 100 are always parallel. At the same time, since the thread pitches of the two ends of the main shaft 302 are the same and the screw directions are opposite, the composite four-bar linkage mechanisms at the two ends will deform completely symmetrically, that is, the top plate 100 only moves vertically relative to the bottom plate 200 without horizontal movement, which ensures that the top plate 100 will move more stably during lifting, and the user's experience will be better.

[0065] In addition, since the above-mentioned screw transmission realizes the function of positive transmission from the power source 301 to the top plate 100 or the bottom plate 200, the reverse self-locking keeps the state unchanged, and the ends of the upper and lower lifting links 303-1 and 303-2 in the first lifting link assemblies 303 and the second lifting link assemblies 304 are in a hinged state, and the upper and lower lifting links 303-1 and 303-2 adopt a Y-shaped structure with the head and tail matched, the height change of the top plate 100 in the vertical direction can be close to twice the length of the upper or lower lifting links 303-1 or 303-2, so that the height range of the adjustable lifting pillow is larger, and the user's use demand can be better met.

[0066] Preferably, in one embodiment of the utility model, the lifting mechanism 300 further includes a power source assembly, the power source assembly includes a power source shell 307, a drive gear 308, a main shaft gear 309 and at least a pair of support connecting rod assemblies 310. The power source shell 307 is sleeved outside the power source 301, and at least a pair of first sliding grooves 307-1 are arranged on both sides thereof. The drive gear 308 is connected with the output end of the power source 301, the main shaft gear 309 is engaged with the drive gear 308, and is sleeved on the main shaft 302 when the main shaft 302 passes through the power source shell 307. The support connecting rod assemblies 310 are connected to the power source shell 307, two support connecting rod assemblies 310 in one pair of support connecting rod assemblies are symmetrically arranged on both sides of the power source shell 307, the support connecting rod assembly 310 includes an upper support connecting rod 310-1 and a lower support connecting rod 310-2, one end of the upper support connecting rod 310-1 and the lower support connecting rod 310-2 is hinged through a connecting pin 311, and the other end is hinged with the top plate 100 or the bottom plate 200. One end of the connecting pin 311 is arranged in the first sliding groove 307-1 on the corresponding side of the power source shell 307 and can slide in the first sliding groove 307-1.

[0067] Therefore, the main shaft 302 rotates under the driving of the power source 301, drives the first lifting connecting rod assembly 303 and the second lifting connecting rod assembly 304 to rotate around the top plate 100 and the bottom plate 200 through the connecting rod shaft assembly 306, and the support connecting rod assembly 310 also rotates around the top plate 100 and the bottom plate 200 under the driving of the first lifting connecting rod assembly 303 and the second lifting connecting rod assembly 304. Meanwhile, the support connecting rod assembly 310 is in sliding fit with the first sliding groove 307-1 on both sides of the power source shell 307 through the connecting pin 311, the axis of the connecting pin 311 is always in the same plane as the axes of the main shaft 302 and the connecting rod shaft assembly 306, so that the power source shell 307 cannot rotate around the main shaft 302, plays a supporting and limiting role, makes the power source 301 and the power source shell 307 only lift together with the main shaft 302, and ensures that the power source shell 307 is in a horizontal state and does not overturn.

[0068] Meanwhile, a pair of first travel switches are arranged at both ends of the first sliding groove 307-1 to control the travel range of the device driven by the power source 301. The two first travel switches at both ends of the first sliding groove 307-1 can limit the travel of the power source 301, and when the connecting pin 311 on the support connecting rod assembly 310 slides in the first sliding groove 307-1, touches the corresponding first travel switch and reverses, the travel is always controlled between the two travel switches.

[0069] In addition, in order to further improve the stability of the top plate in the lifting process, further referring to Figure 7 And 8In one embodiment of the present application, the lifting mechanism 300 further comprises at least one main shaft stabilizing rod 319, which is arranged on the main shaft 302 and can rotate around the main shaft 302, and the two ends thereof can respectively slide on the top plate 100 or the bottom plate 200 in a direction perpendicular to the main shaft 302, so that the top plate 100 is parallel to the bottom plate 200 when the top plate 100 is lifted.

[0070] Specifically, the middle part of the main shaft stabilizing rod 319 is sleeved outside the main shaft 302 and can rotate around the main shaft 302, and the two ends thereof are respectively provided with a cylindrical clamping part. Correspondingly, a second sliding groove is arranged on the top plate 100, and a third sliding groove is arranged on the bottom plate 200, both of which are T-shaped grooves and are arranged in a direction perpendicular to the main shaft 302. The clamping part at the top end of the main shaft stabilizing rod 319 is arranged in the second sliding groove on the top plate 100 and can slide therein, and the clamping part at the bottom end thereof is arranged in the third sliding groove on the bottom plate 200 and can slide therein. The main shaft stabilizing rod 319 can be provided with multiple clamping parts and can be installed at the two sides or the middle part of the main shaft 302.

[0071] During the lifting of the top plate 100, the main shaft 302 rotates, and the main shaft stabilizing rod 319 can freely rotate relative to the main shaft 302, and the two ends thereof are respectively matched with the sliding grooves on the top plate 100 and the bottom plate 200 and can slide in the sliding grooves, so as to ensure that the top plate 100 and the bottom plate 200 are axially stationary relative to the main shaft 302.

[0072] In the present embodiment, after the main shaft stabilizing rod 319 is arranged in the lifting mechanism 300, the power source 301 can be directly arranged on the main shaft stabilizing rod 319, so that the power source assembly structures such as the power source housing 307, the driving gear 308, the main shaft gear 309, and the at least one pair of support link assembly 310 in the foregoing embodiments are not required. When the power source 301 is arranged on the main shaft stabilizing rod 319, the reducer in the power source 301 adopts a worm and gear structure, the output shaft thereof is parallel to the main shaft 302, and the output shaft of the motor in the power source 301 forms a 90° angle with the output shaft of the power source 301, so as to drive the main shaft 302 to rotate.

[0073] Similarly, a pair of second travel switches are arranged at the two ends of the second sliding groove, respectively, to control the travel range of the device driven by the power source 301. Of course, the second travel switches can also be arranged at appropriate positions such as the link shaft assembly. The two second travel switches can limit the travel of the power source 301, and when the clamping part at the top end of the main shaft stabilizing rod 319 slides in the second sliding groove and touches the corresponding second travel switch, the direction of rotation is changed, so as to control the travel range between the two travel switches.

[0074] Preferably, in an embodiment of the utility model, the lifting device further comprises two or more than two traction members 312, two or more than two tension sensors 313 and a control circuit board 314. Each traction member 312 is arranged above the top plate 100 in the axial direction, one end of each is connected to one side of the top of the top plate 100, can be made of traction cloth or other elastic cloth, and is used for receiving the head of the user. Each tension sensor 313 is arranged on the other side of the top of the top plate 100 through a corresponding mounting seat, and is connected to the other end of each corresponding traction member 312, the number of tension sensors 313 arranged is consistent with the number of flexible traction cloth 312, and is used for sensing the pressure of the head of the user applied to each traction member 312. The control circuit board 314 is arranged on the other side of the top of the top plate 100, and is electrically connected to the power source 301, each tension sensor 313 and the travel switch, so as to receive the pressure signals transmitted by each tension sensor 313 and control the power source 301 according to the signals, so as to realize the automatic lifting of the top plate 100, so that the user can feel comfortable in various sleeping postures, the curvature of the cervical vertebra of the user is in a natural state, and the sleep quality of the user can be effectively improved. In addition, the control circuit board 314 is also electrically connected to each first travel switch or each second travel switch, and the two first travel switches and the two second travel switches control the travel range of the power source 301 through the control circuit board 314.

[0075] Preferably, further referring to Figure 9 Preferably, in an embodiment of the utility model, the lifting device further comprises two or more than two adjusting screws 315, one end of each adjusting screw 315 is screwed through the through hole on the corresponding tension sensor 313, and then is screwed with the traction member pin shaft 312-1 arranged at the other end of the corresponding traction member 312. Exemplarily, the traction member pin shaft 312-1 can be provided with a threaded hole, and one end of the adjusting screw 315 is correspondingly provided with a matching threaded structure, and the adjusting screw 315 can be screwed with the traction member pin shaft 312-1 through the threaded hole. The other end of the adjusting screw can be provided with a cross slot or an internal hexagonal protrusion, so as to prevent it from sliding out of the through hole on the tension sensor 313. The tightness of the corresponding traction member 312 is adjusted through the adjusting screw 315, so as to realize the different degrees of covering of the head and neck of the user, and the appropriate stress on each tension sensor 313. Of course, the traction member pin shaft 312-1 can also not be provided with a threaded hole, and one end of the adjusting screw 315 is movably connected with the traction member pin shaft 312-1 through other ways, and the tightness of the corresponding traction member 312 can also be adjusted.

[0076] Preferably, in one embodiment of the utility model, the lifting device further includes a plurality of control keys 316, which are arranged on the other side of the top of the top plate 100. The plurality of control keys 316 are electrically connected with the control circuit board 314 respectively, mainly including power control key, zero control key, manual control key, automatic control key and the like, can control the function or mode of the whole lifting mechanism, the corresponding indicator lamp of each control key is arranged, the corresponding indicator lamp is lighted after pressing a certain control key, and the light indicates that it is in working condition.

[0077] The lifting device further includes at least two power interfaces 318, which facilitate the power input and output of the whole device and the use of other accessories. It also includes at least one data interface, which facilitates the debugging and detection of the whole device.

[0078] After pressing the power control key, the power is connected, and the power can adopt a rechargeable power supply. Press the zero control key again, and the control circuit board 316 will relatively zero the state of each tension sensor 313 before the user's head weight is borne. When the user's head is resting on the top plate 100, press the manual control key, and the power source 301 is within the range of the two travel switches, driving the top plate 100 to make up-down reciprocating motion. If the user feels comfortable at a certain height, press the manual control key again, and the power source 301 pauses, and the control circuit board 316 records the pressure signal data of each tension sensor 313 at this time. The user can adjust the sleeping position again, repeat the foregoing manual operation, and obtain the optimal sampling data under different sleeping positions. Then, the user turns on the automatic control key, compares the current pressure signal data with the optimal sampling data to determine the lifting of the top plate 100. At this time, the current pressure signal data will approach the optimal sampling data, enter a reasonable interval, and it is considered that the adjustment is in place. The power source 301 stops rotating, and the self-locking keeps this state unchanged, and the height of the top plate 100 is fixed. Until it is detected that the pressure signal value on the tension sensor 313 exceeds a certain range, the power source 301 works again to adjust the height of the top plate 100, realizing the intelligent lifting function.

[0079] Preferably, in one embodiment of the utility model, the lifting device further includes two ridge-shaped parts 101, which are arranged on the top of the top plate 100, perpendicular to the axial direction of the top plate 100, and are usually integrally formed with the top plate 100 when manufactured. The two ridge-shaped parts 101 are supported below each traction member 312, which can make the middle part of each traction member 312 suspended, which is conducive to sensing the pressure of the user's head applied to each traction member 312.

[0080] Preferably, the lifting device further includes two top plate covers 317, which are arranged on the two sides of the axial direction of the top plate 100, and can cover the components arranged on the two sides of the axial direction of the top plate 100, achieving the effects of protection and beauty.

[0081] Preferably, the lifting device further comprises at least one telescopic sleeve 320 arranged outside the lifting mechanism 300 and capable of encapsulating the entire lifting mechanism 300 inside.

[0082] Based on the same technical concept, another embodiment of the utility model also provides a lifting pillow, which comprises a pillow body and the lifting device as described in any one of the above embodiments.

[0083] Exemplarily, the pillow body can comprise various different cushions arranged on the traction member 312 and can also comprise a cladding cover cladded outside the entire lifting device. The cushions can be made of cotton, sponge, buckwheat hulls, tea leaves and the like, and the thickness is preferably not more than the thickness of the two ridge-shaped portions 101 on the top of the top plate 100. The top plate 100 and the bottom plate 200 can also be connected by elastic cloth or latex and the like, and finally the entire lifting device is cladded by the cladding cover. In addition, accessories such as hot compress, phototherapy and massage can also be added.

[0084] Since the lifting pillow of the utility model comprises the lifting device as described above, it also has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0085] In summary, the lifting device and the lifting pillow provided by the embodiments of the utility model adopt a novel lifting mechanism, drive the top plate to lift through two pairs or more pairs of lifting link assemblies driven by the main shaft, so that the lifting pillow can have a larger height adjustment range and is very stable during lifting, and the user experience is better.

[0086] It should be noted that the lifting device provided by the embodiments of the utility model can also be applied to a lifting seat to realize the lifting function of the seat according to the use demand of the user. In fact, the lifting device is suitable for any occasion where the height of a hinge object with one end hinged is automatically adjusted. In the description of the utility model, it should be noted that the directions or positional relationships indicated by "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships in which the product of the utility model is usually placed, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0087] In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the embodiments of the present disclosure, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0088] In the description of the present application, it should be pointed out that, unless otherwise specifically defined and limited, the terms "set", "install", "connect" 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, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0089] In the above embodiments of the present application, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0090] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A lifting device comprising a top plate and a bottom plate, between which a lifting mechanism is provided, characterized in that, The lifting mechanism comprises: a power source; a main shaft having thread structures with equal thread pitches at both ends and being rotatable under the drive of the power source; two or more connecting rod shaft assemblies respectively arranged at both ends of the main shaft; each of the connecting rod shaft assemblies comprises a main shaft nut and two connecting rods, and the main shaft nut is threadedly connected to the main shaft; two pairs or more pairs of lifting connecting rod assemblies respectively arranged at both ends of the main shaft through the connecting rod shaft assemblies; each of the lifting connecting rod assemblies comprises an upper lifting connecting rod and a lower lifting connecting rod, one end of each of the upper and lower lifting connecting rods is hingedly connected to the connecting rod, and the other end of each of the upper and lower lifting connecting rods is hingedly connected to the top plate or the bottom plate; the main shaft drives the connecting rod shaft assemblies to move along the main shaft when the main shaft rotates, so as to drive the top plate to lift.

2. The lift device of claim 1, wherein, The power source is arranged in a power source assembly, and the power source assembly comprises: a power source shell arranged outside the power source and provided with at least one pair of first sliding grooves at both sides; a drive gear connected to an output end of the power source; a main shaft gear engaged with the drive gear and sleeved on the main shaft when the main shaft passes through the power source shell; at least one pair of support connecting rod assemblies connected to the power source shell, and two support connecting rod assemblies in one pair of the support connecting rod assemblies are symmetrically arranged at both sides of the power source shell; each of the support connecting rod assemblies comprises an upper support connecting rod and a lower support connecting rod, one end of each of the upper and lower support connecting rods is hingedly connected to a connecting pin, and the other end of each of the upper and lower support connecting rods is hingedly connected to the top plate or the bottom plate; one end of the connecting pin is arranged in the first sliding groove and can slide in the first sliding groove.

3. The lift device of claim 2, wherein, One pair of first travel switches is arranged at both ends of the first sliding groove.

4. The lift device of claim 1, wherein, The lifting mechanism further comprises: at least one main shaft stabilizing rod arranged on the main shaft and rotatable around the main shaft, and both ends of the main shaft stabilizing rod can slide on the top plate or the bottom plate in a direction perpendicular to the main shaft, so that the top plate is parallel to the bottom plate when the top plate lifts.

5. The lift device of claim 4, wherein, The power source is arranged on the main shaft stabilizing rod.

6. The lift device of claim 4, wherein, The top end of the main shaft stabilizing rod is arranged in a second sliding groove in the lower part of the top plate and can slide in the second sliding groove, and the bottom end of the main shaft stabilizing rod is arranged in a third sliding groove in the upper part of the bottom plate and can slide in the third sliding groove; the second sliding groove and the third sliding groove are both perpendicular to the main shaft.

7. The lift device of claim 6, wherein, One pair of second travel switches is arranged at both ends of the second sliding groove.

8. The lift device according to any one of claims 1 to 7, characterized in that The main shaft has a first end portion and a second end portion with opposite thread directions; The lifting connecting rod assemblies comprise at least one pair of first lifting connecting rod assemblies and at least one pair of second lifting connecting rod assemblies; at least one pair of first lifting connecting rod assemblies are arranged at the first end portion, and at least one pair of second lifting connecting rod assemblies are arranged at the second end portion; When the main shaft rotates, the connecting rod shaft assemblies connected to the first lifting connecting rod assemblies and the connecting rod shaft assemblies connected to the second lifting connecting rod assemblies move in opposite directions along the main shaft.

9. The lift device according to any one of claims 1 to 7, characterized in that The lifting device further comprises: two or more than two traction members arranged above the top plate in the axial direction, one end of each of the traction members is connected to one side of the top of the top plate; Two or more tension sensors are arranged on the other side of the top of the top plate and connected with the other ends of the corresponding traction members respectively; A control circuit board is arranged on the other side of the top of the top plate and electrically connected with the power source and the tension sensors respectively.

10. The lift device of claim 9, wherein, The lifting device further comprises: Two or more adjusting screws are arranged on the other side of the top of the top plate and movably connected with the traction member pins arranged on the other ends of the corresponding traction members.

11. The lift device of claim 9, wherein, The lifting device further comprises: Two ridge-shaped parts are arranged on the two sides of the top of the top plate and supported under the corresponding traction members to suspend the middle parts of the traction members.

12. A lifting pillow, characterized in that The lifting device further comprises: A pillow and the lifting device according to any one of claims 1-11.

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