CN215304426U - Lifting assembly, waist support mechanism and electric bed - Google Patents

Abstract

The utility model provides a lifting assembly, which comprises a fixed seat, a first connecting piece and a second connecting piece, wherein the first connecting piece is fixedly connected with the fixed seat; the lower end of the second connecting piece is rotatably connected to the fixed seat, and the upper end of the second connecting piece is rotatably connected to the first connecting piece; the lower end of the first connecting piece is rotatably provided with a roller capable of rolling on the fixed seat; the lifting support part is positioned at the upper end of the first connecting piece; the lifting assembly provided by the utility model can ensure that the lower end of the first connecting piece can stably move on the fixed seat, and can reduce the damage of the fixed seat and prolong the service life of the lifting assembly under the condition of supporting the first connecting piece; the waist support mechanism with the lifting assembly has the advantages that the waist support plate rises more stably, the comfort level is enhanced, and the maintenance frequency can be reduced.

Description

Lifting assembly, waist support mechanism and electric bed

Technical Field

The utility model relates to the field of electric beds, in particular to a lifting assembly, a waist support mechanism and an electric bed.

Background

Along with the improvement of living standard of people, the beddo obtains extensive application, and current some beddo has realized waist lifting function through the mechanism that lifts of waist. Like the chinese utility model, the application document with the publication number CN211380466U provides a waist support mechanism of an electric bed, which comprises a waist support plate, a lifting assembly movably connected with both ends of the waist support plate, and a driving motor for driving the lifting assembly to move. The height of the waist supporting plate can be adjusted by the waist supporting mechanism, and the functionality and the comfort of the electric bed are improved. In this technical scheme, because driving motor relies on the slide bar to move about in the sliding tray when drive lifting unit activity, and then makes the waist layer board on lifting unit's the first connecting piece go up and down. However, when the waist support plate is located the rising position and is used for bearing weight, the sliding rod supports the first connecting piece, can cause oppression to the fixing base edge that encloses into the sliding tray, and cause the damage to this sliding tray bottom edge (enclosing into the fixing base edge of sliding tray promptly), make the sliding tray bottom edge with the sliding rod contact no longer smooth, smoothness degree when the first connecting piece that influences lifting unit rises influences the travelling comfort of beddo, the life-span of beddo is directly influenced even.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the present invention provides a lifting assembly, a waist support mechanism and an electric bed, which have simple structure, smooth lifting and landing and long service life.

The utility model provides a lifting assembly, which comprises a fixed seat, a first connecting piece and a second connecting piece, wherein the first connecting piece is fixedly connected with the fixed seat; the lower end of the second connecting piece is rotatably connected to the fixed seat, and the upper end of the second connecting piece is rotatably connected to the middle position of the first connecting piece; the lower end of the first connecting piece is rotatably provided with a roller or a sliding block which can roll on the fixed seat, and the lifting supporting part is positioned at the upper end of the first connecting piece.

Further, the lower end of the first connecting piece is connected with a roller shaft, and the roller is arranged on the roller shaft; the side walls of the left side and the right side of the fixed seat are provided with limit grooves, and two ends of the roller shaft can do reciprocating motion in the limit grooves.

Furthermore, at least one roller is uniformly arranged on the left side and the right side of the fixing seat, and the roller is positioned between the inner side wall of the fixing seat on the corresponding side edge and the outer side wall of the first connecting piece.

Furthermore, an outer side wheel surface of the roller between the outer side wall of the first connecting piece and the inner side wall of the fixing seat is abutted to the outer side wall of the first connecting piece, and the other outer side wheel surface of the roller is abutted to the inner side wall of the fixing seat.

Furthermore, at least one end of the roller shaft penetrates through the limiting groove and extends out of the outer side wall of the fixing seat.

The utility model provides a waist support mechanism which is provided with two lifting components, namely a first lifting component and a second lifting component; the waist support plate is connected with the waist support plate; the driving assembly comprises a push rod capable of moving in a telescopic mode, and the push rod is connected with the first lifting assembly; the upper end of the first connecting piece of the first lifting assembly and the upper end of the first connecting piece of the second lifting assembly are movably connected with the waist supporting plate.

The lifting assembly further comprises a linkage plate, and the linkage plate is hinged to the roller shaft of the first lifting assembly and the roller shaft of the second lifting assembly.

Furthermore, a connecting block is arranged between the push rod and a roller shaft of the first lifting assembly, and the connecting block is detachably connected with the push rod and the connecting block is detachably connected with the roller shaft; the connecting block is detachably connected with the push rod and the connecting block is detachably connected with the roller shaft; the push rod is fixedly connected with the connecting block, and the connecting block is movably connected with the roller shaft.

The utility model also provides an electric bed, which comprises the lifting assembly.

As described above, the present invention relates to a lifting assembly, a lumbar support mechanism and an electric bed, which has the following advantages:

the lifting assembly provided by the utility model can ensure that the lower end of the first connecting piece can stably move on the fixed seat, and can reduce the damage of the fixed seat and prolong the service life of the lifting assembly under the condition of supporting the first connecting piece; the waist support mechanism with the lifting assembly has the advantages that the waist support plate rises more stably, the comfort level is enhanced, and the maintenance frequency can be reduced.

Drawings

Fig. 1 is a schematic view of a lifting assembly according to a first embodiment of the present invention.

Fig. 2 is another schematic view of a lifting assembly according to a first embodiment of the present invention.

Fig. 3 is a schematic view of a lumbar support mechanism of the present invention.

Figure 4 is another schematic view of a lumbar support mechanism of the present invention.

Figure 5 is another schematic view of a lumbar support mechanism of the present invention.

Description of reference numerals:

10. a fixed seat; 11. fixing grooves; 12. a limiting groove; 20. a first connecting member; 21. a roller; 22. a roller shaft; 30. a second connecting member; 100. a first lifting component; 200. a second lifting component; 300. a drive motor; 310. a push rod; 400. a waist support plate; 500. a linkage plate; 600. and (4) connecting the blocks.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship may be made without substantial technical changes.

As shown in fig. 1 and 2, the present invention provides a first embodiment of a lifting assembly, which includes a fixing base 10, a first connecting member 20, a second connecting member 30 and a lifting support portion; the lower end of the second connecting piece 30 is rotatably connected to the fixed seat 10, and the upper end of the second connecting piece 30 is rotatably connected to the middle position of the first connecting piece 20; the lower end of the first connecting member 20 is rotatably provided with a roller 21 capable of rolling on the fixing base 10, and the lifting support portion is located at the upper end of the first connecting member 20. Wherein, the lifting support part is used for arranging or placing the articles to be lifted.

As shown in fig. 1 and 2, the roller 21 rolls on the bottom wall of the fixed seat 10, when the first connecting member 20 is driven, the roller 21 at the lower end of the first connecting member 20 rolls on the fixed seat 10 along a predetermined track, and the lifting support part is lifted or lowered; when the first connecting piece 20 is static, the roller 21 supports the first connecting piece 20, and the position of the lifting support part is unchanged, so that the lower end of the first connecting piece 20 can be ensured to stably move on the fixing seat 10, the damage to the fixing seat 10 can be reduced under the condition of supporting the first connecting piece 20, and the service life of the lifting assembly is prolonged.

As shown in fig. 1 and fig. 2, in the first embodiment, the fixing base 10 includes a bottom wall and side walls located at the left and right sides of the bottom wall, and the bottom wall and the two side walls enclose a fixing groove 11, and the roller 21, the lower end of the first connecting member 20, and the lower end of the second connecting member 30 are located in the fixing groove 11. In order to ensure that the roller 21 rolls on the predetermined track, a limiting groove 12 may be formed on both left and right sidewalls of the fixing base 10, and the limiting groove 12 extends along the moving direction of the lower end of the first connecting member 20, i.e. along the length direction of the fixing base 10 in this embodiment. The lower end of the first connecting member 20 is provided with a roller shaft 22, the roller shaft 22 penetrates the roller 21, and meanwhile, the end of the roller shaft 22 reciprocates in the limiting groove 12 on the corresponding side, i.e. reciprocates along the length direction of the fixing base 10.

As shown in fig. 1 and 2, preferably, the roller 21 is disposed on the left and right sides of the fixing base 10, that is, on the left and right sides of the fixing groove 11, and the roller 21 is located between the outer side wall of the first connecting member 20 and the inner side wall of the fixing base 10 on the corresponding side, one outer side wheel surface of the roller 21 located between the outer side wall of the first connecting member 20 and the inner side wall of the fixing base 10 abuts against the outer side wall of the first connecting member 20, and the other outer side wheel surface of the roller 21 abuts against the inner side wall of the fixing base 10.

As shown in fig. 1 and 2, the rollers 21 are disposed on the left and right sides of the fixing base 10, so that the lower end of the first connecting member 20 can move stably on the fixing base 10, and the phenomenon that the lower end of the first connecting member 20 is inclined on the left and right sides to cause jamming and the like is avoided. An outer side wheel surface of the roller 21 between the outer side wall of the first connecting piece 20 and the inner side wall of the fixed seat 10 abuts against the outer side wall of the first connecting piece 20, and another outer side wheel surface of the roller 21 abuts against the inner side wall of the fixed seat 10, so that the movement track of the roller 21 is further limited, and the possibility that the movement track of the roller 21 on the fixed seat 10 deviates from the preset movement track is reduced. Simultaneously, the both sides face and the fixing base 10 inside wall of gyro wheel 21, the butt respectively of first connecting piece 20 lateral wall can increase the friction between gyro wheel 21 side wheel face and fixing base 10, the first connecting piece 20, and the acceleration when reducing gyro wheel 21 and being driven for the removal of first connecting piece 20 lower extreme is slower, steady. Preferably, the roller 21 may be made of rubber, plastic, etc., so as to reduce damage to the fixing base 10 when the roller 21 moves.

As shown in fig. 1 and 2, of course, in the first embodiment of the lifting assembly, the first connecting member 20 and the second connecting member 30, and the second connecting member 30 are hinged to the fixing base 10 through the rotating shaft, and the upper end of the second connecting member 30 is connected to the middle of the first connecting member 20. The rollers 21 of this embodiment are respectively disposed at two ends of the roller shaft 22, the central position of the end surface of the inner side wall of the fixing seat 10, which is close to the corresponding side edge, of the roller 21 protrudes outward to form a limiting ring for wrapping the roller shaft 22, the limiting ring is located in the limiting groove 12, the outer circumferential surface of the limiting ring is attached to the upper and lower edges of the limiting groove 12, and the roller shaft 22 is further limited in the vertical direction.

Of course, the second embodiment of the lifting assembly provided by the utility model comprises a fixed seat 10, a first connecting piece 20, a second connecting piece 30 and a lifting support part; the lower end of the second connecting piece 30 is rotatably connected to the fixed seat 10, and the upper end of the second connecting piece 30 is rotatably connected to the middle position of the first connecting piece 20; the lower end of the first connecting member 20 is rotatably provided with a sliding block capable of sliding on the fixing seat 10, and the lifting support part is located at the upper end of the first connecting member 20. Wherein, the lifting support part is used for arranging or placing the articles to be lifted. The difference from the first embodiment is that the roller in the first embodiment is replaced by a sliding block. Of course, for convenience of smooth movement of the lower end of the first connecting piece 20 on the fixing seat 10, the sliding track of the sliding block is limited, and one sliding block can be arranged on the left side and the right side of the fixing seat respectively, and the sliding block is located between the inner side wall of the fixing seat on the corresponding side edge and the outer side wall of the first connecting piece, and meanwhile, one side wall of the sliding block is abutted to the inner side wall of the fixing seat, and the other side wall is abutted to the outer side wall of the first connecting piece, so that the repeated description is omitted.

As shown in fig. 1, 3, 4 and 5, the present invention provides an embodiment of a lumbar support mechanism, which includes two of the above-mentioned lifting assemblies, driving assemblies, lumbar support plates 400 and linkage plates 500; the two lifting assemblies are respectively a first lifting assembly 100 and a second lifting assembly 200, wherein the driving assembly comprises a push rod 310 capable of performing telescopic motion and a driving motor 300 for driving the push rod 310 to perform telescopic motion, the push rod 310 is connected with the first lifting assembly 100, and the first lifting assembly 100 is in transmission connection with the second lifting assembly 200 through a linkage plate 500; the waist support plate 400 is movably arranged at the upper end of the first connecting piece 20 of the first lifting assembly 100 and the upper end of the first connecting piece 20 of the second lifting assembly 200. Of course, the push rod 310 may be driven by hydraulic pressure or pneumatic pressure.

As shown in fig. 1, 3, 4 and 5, specifically, the first lifting assembly 100 and the second lifting assembly 200 are arranged along the length direction of the waist support plate 400, and the upper end of the first connecting member 20 of the first lifting assembly 100 and the upper end of the second connecting member 30 of the second lifting assembly 200 are respectively connected to two ends of the waist support plate 400, that is, the lifting support portion of the first lifting assembly 100 and the support portion of the second lifting assembly are movably connected to two ends of the waist support plate 400. The free end of the push rod 310 is connected to the first connecting member 20 of the first lifting assembly 100. The linkage plate 500 is hinged on the rolling shaft of the first lifting component 100 and the rolling shaft of the second lifting component 200. And preferably, the same end of the roller shaft 22 of the first lifting assembly 100 and the same end of the roller shaft 22 of the second lifting assembly 200 penetrate through the limiting groove 12 and extend out of the outer side wall of the fixing seat 10, and the linkage plate 500 is connected to the end of the roller shaft 22 of the first lifting assembly 100 and the end of the roller shaft 22 of the second lifting assembly 200.

As shown in fig. 1, 3, 4 and 5, when the driving motor 300 drives the push rod 310 to perform an extending motion, the roller shaft 22 at the lower end of the first connecting member 20 of the first lifting assembly 100 is driven to move forward, the roller 21 of the roller shaft 22 rolls on the fixed seat 10, and at the same time, the linkage plate 500 drives the first connecting member 20 of the second lifting assembly 200 to move synchronously with the first connecting member 20 of the first lifting assembly 100, so that the upper ends of the first connecting members 20 of the first lifting assembly 100 and the second lifting assembly 200 are both lifted upward, and the waist support plate 400 fixed on the first connecting member 20 is lifted upward. When the driving motor 300 is stopped, the lumbar support plate 400 is supported by the rollers 21 at the lower end of the first link 20 and the lower end of the second link 30 of the two elevating assemblies. In the process, the roller 21 under the first connecting piece 20 rolls to enable the waist support plate 400 to rise upwards stably, and the roller 21 at the lower end of the first connecting piece 20 and the lower end of the second connecting piece 30 support the weight on the waist support plate 400, so that the damage to the edges of the fixed seats 10 and the roller shafts 22 in the first lifting assembly 100 and the second lifting assembly 200 is reduced, the service life of the lifting assemblies is prolonged, and the maintenance frequency of the waist support mechanism is reduced.

As shown in fig. 1, 3, 4 and 5, of course, as in the above-mentioned embodiment of the lifting assembly, the rollers 21 are distributed on both sides of the fixing base 10 and located between the outer sidewall of the first connecting member 20 and the inner sidewall of the fixing base 10. Moreover, an outer side wheel surface of the roller 21 located between the outer side wall of the first connecting member 20 and the inner side wall of the fixing seat 10 abuts against the outer side wall of the first connecting member 20, and another outer side wheel surface of the roller 21 abuts against the inner side wall of the fixing seat 10. This setting can inject the movement track of gyro wheel 21, simultaneously, can increase the friction between gyro wheel 21 lateral wall and fixing base 10, the first connecting piece 20, and the acceleration when reducing gyro wheel 21 and being driven can make waist layer board 400 more gentle in the in-process that is lifted up. Further, the waist of the user is supported on the waist support mechanism, and the comfort level of the user can be improved when the waist support plate 400 is changed in height, so that the user experience is enhanced.

As shown in fig. 1, 3 and 4, it should be noted that a connection block 600 is disposed between a push rod of the motor and the roller shaft 22 of the first lifting assembly 100, the connection block 600 is detachably connected to the push rod, and the connection block 600 is detachably connected to the roller shaft 22, wherein a free end of the push rod 310 is fixedly connected to the connection block 600, and the connection block 600 is movably connected to the roller shaft 22. This setting can compare in with push rod lug connection on lifting component 100, makes things convenient for the maintenance of this waist to hold in the palm the mechanism. For example, when the driving motor 300 needs to be replaced, the connecting block 600 is directly arranged to detach the driving motor 300 by detaching the push rod 310 of the driving motor 300 from the connecting block 600, so as to avoid detaching the roller shaft 22 of the first lifting assembly 100. In the present embodiment, the connecting block 600 is connected to the push rod 310 of the driving motor 300, and the connecting block 600 is connected to the roller shaft 22 through the pin shaft.

The utility model also provides an embodiment of the electric bed, wherein the waist support mechanism is arranged in the electric bed and comprises the lifting assembly.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (9)

1. A lifting assembly is characterized by comprising a fixed seat (10), a first connecting piece (20), a second connecting piece (30) and a lifting supporting part; the lower end of the second connecting piece (30) is rotatably connected to the fixed seat (10), and the upper end of the second connecting piece (30) is rotatably connected to the middle position of the first connecting piece (20); the lower end of the first connecting piece (20) is provided with a roller (21) or a sliding block which can roll on the fixed seat (10), and the lifting supporting part is positioned at the upper end of the first connecting piece (20).

2. A lifting assembly as claimed in claim 1, characterized in that the lower end of the first connecting member (20) is connected to a roller shaft (22), the roller (21) being mounted on the roller shaft (22); the left side wall and the right side wall of the fixed seat (10) are respectively provided with a limiting groove (12), and two ends of the roller shaft (22) can reciprocate in the limiting grooves (12).

3. A lifting assembly as claimed in claim 1 or 2, characterized in that at least one roller (21) is arranged on each of the left and right sides of the holder (10), and the roller (21) is located between the inner side wall of the holder (10) and the outer side wall of the first connecting member (20) on the corresponding side.

4. A lifting assembly as claimed in claim 3, characterized in that an outer side of the roller (21) between the outer side of the first connecting member (20) and the inner side of the fixed seat (10) abuts against the outer side of the first connecting member (20), and the other outer side of the roller (21) abuts against the inner side of the fixed seat (10).

5. A lifting assembly as claimed in claim 2, wherein at least one end of the roller shaft (22) extends through the retaining groove (12) and extends beyond the outer side wall of the retaining bracket (10).

6. A lumbar support mechanism comprising the lift assembly of any of claims 1-5, wherein there are two lift assemblies, namely lift assembly one (100) and lift assembly two (200); further comprises a driving component (300) and a waist supporting plate (400); the driving assembly comprises a push rod (310) capable of moving telescopically, and the push rod (310) is connected with the first lifting assembly (100); the upper end of the first connecting piece (20) of the first lifting assembly (100) and the upper end of the first connecting piece (20) of the second lifting assembly (200) are movably connected with the waist supporting plate (400).

7. A lumbar support mechanism according to claim 6, further comprising a linkage plate (500), wherein said linkage plate (500) is hinged to the roller axle (22) of said first lift assembly (100) and the roller axle (22) of said second lift assembly (200).

8. The lumbar support mechanism according to claim 6, characterized in that a connecting block (600) is arranged between the push rod (310) and the roller shaft (22) of the first lifting assembly (100), and the connecting block (600) is detachably connected with the push rod (310) and the connecting block (600) and the roller shaft (22); the push rod (310) is fixedly connected with a connecting block, and the connecting block is movably connected with the roller shaft.

9. An electric bed comprising a lifting assembly as claimed in any one of claims 1 to 5.

Images