Electric standing-up cushion

Abstract

An electric lifting cushion, comprising a base, a bearing seat, a force-bearing rod that movably connects the base and the bearing seat, a driving component, and a guiding component. The guiding component is fixed to the base. The driving component includes a power part and a driving shaft that is interlocked with the power part. The driving shaft includes a roller component rotatably mounted at one end of the driving shaft. The driving shaft is interlocked with the force-bearing rod. The guiding component forms a guiding surface. The roller component of the driving shaft is carried on the guiding surface. The power part drives the driving shaft. The guiding surface guides the roller component of the driving shaft to roll. The driving shaft drives the force-bearing rod to move. The force-bearing rod interlocks the base and the bearing seat to move relative to each other.

Description

Technical Field

[0001] This design relates to a lifting device, and particularly to an electric lifting cushion.

Background Art

[0002] For related prior art, please refer to a vehicle jack disclosed in the new type patent TWM296191U of Taiwan, China. It is provided with opposite top plates and bottom frames, and more than one set of cross-acting inner and outer brackets are arranged between the top plates and the bottom frames; a pressing cylinder device with one end movably pivoted is arranged along the inner and outer brackets; guiding edges that open and close relatively up and down are respectively arranged on one side of the central movable pivot point of the inner and outer brackets; the pressing cylinder device contains an extended front cylinder shaft group that is connected to a wheel shaft in a linkage manner, and the wheel shaft is positioned on the shaft body with inner and outer movable wheels containing groove parts, so that the above-mentioned inner and outer movable wheels respectively press against and are linked to the relatively upper and lower guiding edges of the above-mentioned inner and outer brackets; thus, the jack has the advantages of low retracted height, small volume and good structural strength.

[0003] However, for such a lifting device disclosed in this prior art (TWM296191U), when the output shaft (pressing cylinder device) is designed to be horizontal, the output shaft must be spaced a certain distance from the shaft pin 33 in the up and down directions, otherwise the lifting function cannot be realized. As a result, the overall thickness of the jack cannot be reduced.

[0004] In addition, for prior art, reference can also be made to a cantilever jack disclosed in the utility model patent CN 209396795 U of China, including: a front support seat, an oil cylinder, a support beam, a piston rod, a cantilever beam and a rear support seat; one end of the oil cylinder is fixed on the front support seat, and the other end of the oil cylinder is connected with a piston rod, so that the piston rod moves along the length direction of the oil cylinder in the oil cylinder; the other end of the piston rod is connected to the rear support seat; the first end of the cantilever beam is rotatably connected to the rear support seat, the second end of the cantilever beam is used for abutting and lifting an object, one end of the support beam is rotatably connected to the front support seat, and the other end of the support beam is rotatably connected between the first end and the second end of the cantilever beam.

[0005] However, for such a lifting device disclosed in this prior art (CN 209396795 U), a certain included angle must be designed between the support beam 130 and the cantilever beam 140, otherwise the lifting function cannot be realized, and similarly, the overall thickness of the lifting device cannot be reduced.

[0006] Therefore, it is necessary to provide a new lifting device to solve the above technical problems.

Summary of the Invention

[0007] The purpose of this design is to provide a new electric lifting cushion, which can be made thinner and lighter. When the driving component is in the initial state of being horizontal and without an included angle in a narrow height space, the driving shaft has no dead point and can also drive and lift a set load.

[0008] The purpose of this design is achieved through the following technical solutions:

[0009] An electric lifting cushion, comprising a base, a bearing seat, a force-bearing rod that movably connects the base and the bearing seat, a driving component, and a guiding component. The guiding component is fixed to the base. The driving component includes a power unit and a driving shaft that is interlocked with the power unit. The driving shaft includes a roller component rotatably installed at one end of the driving shaft. The driving shaft is interlocked with the force-bearing rod. The roller component of the driving shaft is carried on the guiding component. The power unit drives the driving shaft. The guiding component guides the roller component of the driving shaft to rise or fall. The driving shaft drives the force-bearing rod to move. The force-bearing rod interlocks the base and the bearing seat to move relative to each other.

[0010] Furthermore, the guiding component is formed with a guiding surface. The roller component of the driving shaft is carried on the guiding surface. The guiding surface increases or decreases in height along the rolling direction of the roller component.

[0011] Furthermore, the guiding surface is an inclined plane, or the cross-section of the guiding surface is arc-shaped, or the cross-section of the guiding surface is composed of multiple arcs combined, or the cross-section of the guiding surface is composed of a section of elliptical arc and a section of arc combined, or the guiding surface is composed of a number of stepped portions connected / combined.

[0012] Furthermore, the force-bearing rod includes a driving rod and a linkage rod. One end of the driving rod is rotatably connected to the base, and the other end of the driving rod is limited to the bearing seat. One end of the linkage rod is limited to the base, and the other end of the linkage rod is rotatably connected to the bearing seat. The driving shaft is interlocked with the driving rod.

[0013] Furthermore, there are two groups of the force-bearing rods. Each of the force-bearing rods includes a driving rod and a linkage rod that cooperate with each other. The guiding component is located between the two groups of force-bearing rods.

[0014] Furthermore, the driving component is located between the two groups of force-bearing rods. The power unit is a linear motor. Roller components are installed on both sides of one end of the driving shaft.

[0015] Furthermore, the other end of the driving rod is slidably limited to the bearing seat, and one end of the linkage rod is slidably limited to the base.

[0016] Furthermore, the driving rod and the linkage rod are arranged crosswise, and the crosswise positions of the driving rod and the linkage rod are rotatably connected to each other.

[0017] Furthermore, the force-bearing rod includes a driving rod and a linkage rod. One end of the driving rod is rotatably connected to the base, and the other end of the driving rod is fixed to the bearing seat. One end of the linkage rod is limited to the base, and the other end of the linkage rod is rotatably connected to the driving rod or the bearing seat. The driving shaft is interlocked with the driving rod.

[0018] Furthermore, the driving rod is provided with a driving track, and the driving shaft moves along the driving track to push the driving rod and then link with the driving rod.

[0019] Furthermore, the driving track is a slide groove, and a driving portion protruding into the slide groove is formed on the driving shaft, and the driving shaft is linked with the driving rod by pushing the driving rod via the driving portion.

[0020] Furthermore, the driving rod is rotatably connected to the base to form a rotating shaft, and a center line of a moving track of the driving part of the driving shaft on the driving rod is colinear with an axis point of the rotating shaft.

[0021] Furthermore, when the electric rising cushion is in an initial state, the axis of the driving shaft is arranged horizontally.

[0022] Compared with the prior art, this design has the following beneficial effects: it can make the electric lifting seat cushion design lighter and thinner, and realize that in a narrow height space, when the driving component is in the initial horizontal state with no angle, the driving shaft has no dead point and can be pushed forward to lift the set load.

Brief Description of the Drawings

[0023] Figure 1 is a three-dimensional diagram of the electric stand-up cushion of the present application, which shows a three-dimensional schematic diagram of the electric stand-up cushion when it rises to the highest position;

[0024] Figure 2 is a cross-sectional view of the electric stand-up cushion of the present application, which shows a cross-sectional view when the electric stand-up cushion is lowered to the lowest position, and the section position is a vertical plane along the axis of the motor drive shaft;

[0025] Figure 3 yes Figure 2 The diagram of the use state of the electric lifting seat cushion shown is a schematic diagram showing the electric lifting seat cushion rising to a certain height but not reaching the highest position;

[0026] Figure 4 yes Figure 2 The diagram of the electric lift cushion in use is shown, which shows a schematic diagram of the electric lift cushion when it rises to the highest position;

[0027] Figure 5 A perspective view of a second embodiment of the electric rise cushion of the present application, which shows a perspective schematic view of the electric rise cushion when it rises to the highest position;

[0028] Figure 6 yes Figure 5 The cross-sectional view of the embodiment shown, the section position is a vertical plane along the axis of the motor drive shaft;

[0029] Figure 7This is another embodiment of the guiding member 5 in the electric lifting cushion of the present application.

Specific Embodiment

[0030] The following will introduce the specific embodiment of the electric lifting cushion of this design in conjunction with Figures 1 to 6 It should be noted that, without conflict, the embodiments and features in the embodiments of this design can be combined with each other.

[0031] In the description of this design, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this design can be understood according to specific circumstances.

[0032] In the description of this design, it should be understood that the terms "including" and "having" used herein and any of their variations are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or devices.

[0033] Please refer to Figures 1 to 4 As shown, an electric lifting cushion disclosed in the present application includes a flat base 1, a flat seat 2, a force-bearing rod 3 that movably connects the base 1 and the seat 2, a driving component 4, and a guiding member 5. The guiding member 5 is fixed to the base 1. The driving component 4 includes a power unit 41 and a driving shaft 42 that is interlocked with the power unit 41. The driving shaft 42 includes a roller member 421 rotatably mounted at one end of the driving shaft 42. The driving shaft 42 is interlocked with the force-bearing rod 3. One end (the end away from the roller member 421) of the driving component 4 is rotatably connected to the base 1.

[0034] The guiding member 5 forms a guiding surface 51. The roller member 421 of the driving shaft 42 is carried on the guiding surface 51. The power unit 41 drives the driving shaft 42. The guiding surface 51 guides the roller member 421 of the driving shaft 42 to roll. The driving shaft 42 drives the force-bearing rod 3 to move. The force-bearing rod 3 interlocks the seat 2 and the base 1 to make relative movement. In the present application, the power unit 41 is a linear motor. Of course, it can also be other embodiments, such as an oil cylinder. The function of the power unit 41 is to enable the driving shaft 42 to expand and contract along the extending direction.

[0035] Please refer to Figures 1 to 4As shown, the guiding surface 51 increases or decreases in height along the rolling direction of the roller member 421. Specifically, along the extending direction of the driving member 4, the height of the guiding surface 51 increases. In some embodiments, the guiding surface 51 may be an inclined plane; or in other embodiments, the cross-section of the guiding surface 51 (the vertical cutting plane passing through the axis of the driving shaft 42) is arc-shaped; or in other embodiments, the cross-section of the guiding surface 51 is composed of a combination of multiple arcs; or in other embodiments, the cross-section of the guiding surface 51 is composed of a combination of an elliptical arc section and an arc section. The arc described in this application may be a circular arc or an elliptical arc. Of course, in other embodiments, the cross-section of the guiding surface 51 may also be a combination of an inclined plane and an arc.

[0036] The cross-sectional shape of the guiding surface 51 determines the output force of the driving member 4 when the bearing seat 2 is under a constant load and the driving shaft 42 is pushed at a constant speed. In order to make the output force of the driving member 4 relatively balanced throughout the entire stroke, after multiple force experiments and verifications, this application preferably selects that the cross-section of the guiding surface 51 is composed of a combination of an elliptical arc section and a circular arc section, and the diameter of the arc section of the guiding surface 51 is greater than the diameter of the roller member 421, and the arc section of the guiding surface 51 is smoothly and tangentially connected to the elliptical arc section. The output force of the driving member 4 is relatively balanced throughout the entire stroke, which can extend the service life of the driving member 4.

[0037] Please refer to Figures 1 to 4 As shown, the force-bearing rod 3 includes a driving rod 31 and a linkage rod 32. One end of the driving rod 31 is rotatably connected to the base 1, and the other end of the driving rod 31 is limited in the bearing seat 2; specifically, the other end of the driving rod 31 is slidably limited in the bearing seat 2 [specifically, a roller (not marked) may be provided at the other end of the driving rod 31, a slideway (not marked) is provided at the corresponding position of the bearing seat 2, and the roller is correspondingly limited in the slideway and can roll in the slideway]; the driving rod 31 is linked with the driving shaft 42.

[0038] One end of the linkage rod 32 is limited in the base 1, and the other end of the linkage rod 32 is rotatably connected to the bearing seat 2; specifically, one end of the linkage rod 32 is slidably limited in the base 1 (similarly, a roller and slideway structure can also be designed here for cooperation).

[0039] The driving rod 31 and the linkage rod 32 are cross-arranged, and the intersection part of the driving rod 31 and the linkage rod 32 is rotatably connected to each other to form a shear arm structure.

[0040] There are two sets of the force-bearing rods 3, and each set of the force-bearing rods 3 includes a driving rod 31 and a linkage rod 32 that cooperate with each other. The guiding member 5 is located between the two sets of force-bearing rods 3. The driving member 4 is located between the two sets of force-bearing rods 3, and roller members 421 are installed on both sides of one end of the driving shaft 42. Specifically, driving portions 420 protrude from both sides of one end of the driving shaft 42, and the roller members 421 are correspondingly sleeved on the driving portions 420.

[0041] Please refer to Figure 1 , Figure 3 and Figure 4 As shown, a driving track 311 is provided on the driving rod 31, and the driving shaft 42 moves along the driving track 311, pushing against the driving rod 31 and thus being linked with the driving rod 31. Specifically, the driving track 311 is a kind of chute (in this application, the chute is a long strip-shaped through groove structure penetrating the driving rod 31), the end of the driving portion 420 protrudes into the chute (driving track 311), and the driving shaft 42 pushes against the driving rod 31 through the driving portion 420 to achieve linkage. In other embodiments, the driving portion 420 may also be a rotating shaft structure assembled to the end of the driving shaft 42.

[0042] Of course, in other embodiments, the driving track 311 may also be provided as a rib-shaped slideway protruding outward from the surface of the driving rod 31 (not shown), and the driving portion 420 may be designed as a matching structure that is slidably limited to the rib-shaped slideway (for example, it can be designed as a pulley mechanism that clamps the upper and lower sides of the rib-shaped slideway). Of course, it can also be other similar sliding matching structures.

[0043] Please refer to Figure 1 , Figure 3 , Figure 4 As shown, the driving rod 31 is rotatably connected to the base 1 to form a rotating shaft 30. It is set that the driving track 311 on the driving rod 31 is collinear with the center point of the rotating shaft 30. Therefore, the center line of the moving track of the driving portion 420 on the driving rod 31 is collinear with the axis of the rotating shaft 30. In addition, when the electric lifting seat cushion is in the initial state, the axis of the driving shaft 42 is horizontally arranged. In this way, the height of the electric lifting seat cushion of this application in the initial state can be reduced as much as possible.

[0044] It should be noted that the initial state of the electric lifting seat cushion described herein refers to the state when the seat 2 and the base 1 are closed, that is Figure 2 the state shown.

[0045] Please refer to Figure 5 and Figure 6 As shown, it is a second embodiment of an electric lifting seat cushion of this application. The second embodiment is the same as Figures 1 to 4The difference in the first embodiment shown is that the structure of the force-bearing rod 3' is different. Specifically, one end of the driving rod 31' is rotatably connected to the base 1', and the other end of the driving rod 31' is fixed to the bearing seat 2'. One end of the linkage rod 32' is limited to the base 1' (specifically, a roller (not labeled) can be provided at one end of the linkage rod 32', and a slideway (not labeled) is provided at the corresponding position of the base 1'. The roller is correspondingly limited in the slideway and can roll in the slideway). The other end of the linkage rod 32' is rotatably connected to the driving rod 31' or the bearing seat 2' (in this application, the other end of the linkage rod 32' is rotatably connected to the middle position of the driving rod 31'). The drive shaft 42' is linked with the driving rod 31'.

[0046] Certainly, when the power unit 41 is a linear motor, the electric standing-up cushion may further include a rechargeable lithium battery, which is installed on the base 1 and used to supply power to the power unit 41.

[0047] Next, the actuation process of the electric standing-up cushion of the present application will be described in detail with reference to the drawings.

[0048] In the initial state, as Figure 2 shown in the figure, at this time, the base 1 and the bearing seat 2 are basically horizontally arranged, and the drive shaft 42 is also basically in a horizontal position. The roller member 421 at one end of the drive shaft 42 is located at the lowest position of the guiding surface 51.

[0049] In the process state, as Figure 3 shown in the figure, at this time, the power unit 41 drives the drive shaft 42 to extend. The roller member 421 gradually rolls upward along the guiding surface 51, so that the drive shaft 42 pushes the driving rod 31 along the driving track 311 through the driving part 420, and swings the driving rod 31 upward along the rotating shaft 30, thereby driving the bearing seat 2 to move obliquely upward.

[0050] In the highest state, as Figure 4 shown in the figure, at this time, the driving part 420 moves from one end of the driving track 311 to the other end, so that the bearing seat 2 moves obliquely upward to the highest position.

[0051] The electric standing-up cushion in the present application is mainly used to be placed on a stool or a chair to assist patients or the elderly with poor legs or waists to stand up. It can provide an auxiliary standing-up process for the elderly or patients when getting up after sitting for a long time.

[0052] In the second embodiment of the present application, during the actuation process of the bearing seat 2' from the initial state to the highest state, a larger angle change can be achieved compared with the first embodiment, and it can be applied to devices that require angle adjustment such as the back lifting of patients in hospital beds.

[0053] Of course, in other embodiments, the force-bearing rod 3 can also be designed to be composed of a plurality of driving rods 31 and a plurality of linkage rods 32, which are cross-overlapped in pairs, similar to the form of two X shapes overlapped up and down, forming a multi-fork arm structure.

[0054] Please refer to Figure 7 As shown, this is another embodiment of the guiding member 5 of the electric lifting cushion of the present application. In this embodiment, the guiding surface 51 of the guiding member 5 is not designed as a smooth arc surface or a smooth plane. In this embodiment, the guiding surface 51 is formed by connecting a plurality of stepped portions (for reference numerals, similar to the structure of steps one by one), and the heights of the plurality of stepped portions increase along the extending direction of the driving shaft 42. In this embodiment, the steepness of the guiding surface 51 can be adjusted by adjusting the lengths and heights of the stepped portions near different positions of the guiding surface 51, so as to adjust the output force of the driving member 4, so that the output force of the driving member 4 is relatively balanced over the entire stroke.

[0055] Of course, on the Figure 7 basis, another variant can also be formed. Specifically, the guiding surface 51 of the guiding member 5 is composed of a plurality of stepped portions (not shown), and there is a gap between any two adjacent stepped portions, but along the extending direction of the driving shaft 42, the heights of the plurality of stepped portions increase.

[0056] In other words, the guiding surface 51 in the present application is actually a virtual surface, which does not necessarily refer to a physical plane. The setting of the guiding surface 51 mainly serves to guide the roller member 421 to rise, so as to drive the driving rod 31 to swing upward to achieve the function.

[0057] For the electric lifting cushion in the present application, mainly through the design of the guiding member 5, the driving shaft 42 can be designed to be parallel to the base 1, so that the electric lifting cushion can be designed to be more lightweight and thinner.

[0058] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present design, rather than to limit them; although the present design has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present design.

Claims

1. An electric lifting cushion, characterized in that: It includes a base (1), a seat (2), a force-bearing rod that movably connects the base (1) and the seat (2), a driving component (4), and a guiding component (5). The guiding component (5) is fixed to the base (1), and the guiding component (5) is formed with a guiding surface (51). The height of the guiding surface (51) gradually increases from one end to the other end; The driving component (4) includes a power part (41) and a driving shaft (42) that is linked with the power part (41); The driving shaft (42) includes a roller component (421) rotatably installed at one end of the driving shaft (42). The roller component (421) can correspondingly bear on the guiding surface (51) and can move on the guiding surface (51); The force-bearing rod includes a driving rod (31). One end of the driving rod (31) is rotatably connected to the base (1) to form a rotating shaft (30), and the other end of the driving rod (31) is limited to the seat (2); A driving track (311) is provided on the driving rod (31) and is located near one end of the driving rod (31) that is rotatably connected to the base (1); A driving part (420) is formed on the driving shaft (42). The driving part (420) is slidably limited to the driving track (311) and can move along the driving track; The guiding surface (51) is an inclined plane, or the cross-section of the guiding surface (51) is arc-shaped, or the cross-section of the guiding surface (51) is composed of multiple arcs, or the cross-section of the guiding surface (51) is composed of a section of elliptical arc and a section of arc, or the guiding surface (51) is connected / combined by several stepped parts.

2. The electric lifting cushion according to claim 1, characterized in that: The force-bearing rod further includes a linkage rod. One end of the linkage rod (32) is limited to the base (1), and the other end of the linkage rod is rotatably connected to the driving rod (31).

3. The electric lifting cushion according to claim 2, wherein: The other end of the linkage rod (32) that is rotatably connected to the driving rod (31) further extends towards the end away from the end where the linkage rod (32) is limited to the base (1) to form an extended end. The end of the extended end is rotatably connected to the seat (2), so that the driving rod (31) and the linkage rod (32) are arranged in a cross manner.

4. The electric lifting cushion according to claim 1 or 2 or 3, characterized in that: There are two groups of the force-bearing rods, and the guiding component (5) is located between the two groups of the force-bearing rods.

5. The electric lifting cushion according to claim 4, characterized in that: The driving component (4) is located between the two groups of the force-bearing rods. The power part is a linear motor, and roller components (421) are installed on both sides of one end of the driving shaft (42).

6. The electric lifting cushion according to claim 2 or 3, characterized in that: The other end of the driving rod (31) is slidably limited to the seat (2), and one end of the linkage rod (32) is slidably limited to the base (1).

7. The electric lifting cushion according to claim 2, characterized in that: One end of the driving rod is rotatably connected to the base (1), and the other end of the driving rod is fixedly limited to the bearing seat (2). One end of the linkage rod is slidably limited to the base (1).

8. The electric lifting cushion according to claim 1, wherein: The driving track (311) is a kind of chute, and the driving part (420) is a columnar structure protruding from the driving shaft (42) into the driving track (311).

9. The electric lifting cushion according to claim 1, wherein: The center line of the driving track (311) of the driving part (420) on the driving rod (31) is collinear with the axis point of the rotating shaft.

10. The electric lifting cushion according to claim 1, wherein: When the electric lifting cushion is in the initial state, the axis of the driving shaft (42) is horizontally arranged.

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