CN108720410B - Back lifting mechanism for electric bed and electric bed with back lifting mechanism - Google Patents
Back lifting mechanism for electric bed and electric bed with back lifting mechanism Download PDFInfo
- Publication number
- CN108720410B CN108720410B CN201710264093.2A CN201710264093A CN108720410B CN 108720410 B CN108720410 B CN 108720410B CN 201710264093 A CN201710264093 A CN 201710264093A CN 108720410 B CN108720410 B CN 108720410B
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- China
- Prior art keywords
- push rod
- frame
- lifting mechanism
- outer fixed
- back frame
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- 230000007246 mechanism Effects 0.000 title claims abstract description 38
- 230000009471 action Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C19/00—Bedsteads
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C19/00—Bedsteads
- A47C19/02—Parts or details of bedsteads not fully covered in a single one of the following subgroups, e.g. bed rails, post rails
Landscapes
- Invalid Beds And Related Equipment (AREA)
Abstract
The back lifting mechanism comprises a push rod group, an outer fixed frame, an inner sliding frame and a back frame, wherein the inner sliding frame and the back frame are in sliding connection with the outer fixed frame in a horizontal plane, the back frame is pivoted with the inner sliding frame and can rotate relative to the inner sliding frame and slide relative to the outer fixed frame, the push rod group comprises a short push rod and a long push rod, one end of the short push rod is pivoted with the back frame, the other end of the short push rod is pivoted with the outer fixed frame, one end of the long push rod is pivoted with the back frame, and the other end of the long push rod is pivoted with the outer fixed frame; during the lifting of the back frame, the push rod group has a two-stage travel, and during the first stage travel, the inner sliding frame slides relative to the outer fixed frame, so that the short push rod acts on the back frame and lifts it by a small angle beyond the plane; in the second stroke, the inner slide frame continues to slide relative to the outer fixed frame, so that the long push rod acts on the back frame and lifts it further.
Description
Technical Field
The present invention relates to a back lifting mechanism for an electric bed, and also relates to an electric bed having the same.
Background
Most of the existing electric beds on the market comprise an upper bed frame and a lower bed frame, wherein a bed plate or a bed frame capable of being turned over relative to the bed frame is arranged in the upper bed frame, and a motor, a connecting rod and other driving or linkage mechanisms are arranged in the lower bed frame. Because the upper and lower bed frames are both thick, the motor and the push rod can have enough moment when lifting the reversible bed board or bed frame from the initial position.
However, the thickness of the electric bed is large due to the structure, so that the beauty and portability of the electric bed are affected, and the electric bed is not suitable for an ultrathin electric bed.
And if the thickness of the frame is simply reduced, the problem of insufficient initial moment is caused.
Disclosure of Invention
In order to solve the above-mentioned problems, the present invention provides a back lifting mechanism for an electric bed, which has a push rod group, an outer fixed frame, an inner sliding frame and a back frame, wherein the inner sliding frame is slidably connected with the outer fixed frame in a horizontal plane, the back frame is pivoted with the inner sliding frame and can rotate relative to the inner sliding frame and slide relative to the outer fixed frame, the push rod group includes a short push rod and a long push rod, one end of the short push rod is pivoted with the back frame, the other end of the short push rod is pivoted with the outer fixed frame, one end of the long push rod is pivoted with the back frame, and the other end of the long push rod is pivoted with the outer fixed frame;
During the lifting of the back frame, the push rod group has a two-stage stroke:
in the first stroke, the inner sliding frame slides relative to the outer fixed frame so as to push the back frame, and the short push rod acts on the back frame and lifts the back frame by a small angle beyond the plane, and meanwhile, the long push rod does not push the back frame;
In the second stroke, the inner slide frame continues to slide relative to the outer fixed frame to further push the back frame and cause the long push rod to act on and lift the back frame further while the short push rod does not push the back frame.
The back lifting mechanism of the present invention may also have one or more of the following features:
further, the sliding of the inner sliding frame relative to the outer fixing frame is driven by a push rod motor.
Further, the long push rod and the fixed end of the outer fixed frame are provided with a free travel arrangement, so that the long push rod does not push the back frame in the first travel.
Further, the free stroke is configured as a length of a chute provided on the outer fixed frame and a slider provided at one end of the long push rod, wherein the slider is capable of sliding in the chute.
Further, the sliding block is provided with a shaft sleeve, so that friction between the sliding block and the sliding groove can be reduced, noise generated during friction can be reduced, and the sliding sleeve is preferably made of plastic.
Alternatively, the free travel arrangement of the long push rod can also be a slider provided on the lumbar frame and a length of runner provided on the long push rod.
Alternatively, the free travel configuration of the long push rod can also be a telescopic distance of the long push rod.
Further, the short push rod is composed of a circular tube and a sleeve so as to have a free stroke without pushing the back frame in the second stroke, and the circular tube of the short push rod is not separated from the sleeve when the back frame is lifted to a maximum angle.
Optionally, the short push rod and the long push rod are pivoted coaxially with the back frame.
Alternatively, the short push rod and the long push rod are respectively pivoted with the back frame in a non-coaxial way. In the first section of the two-section stroke, the included angle between the short push rod and the outer fixed frame is gradually increased, when the short push rod is perpendicular to the outer fixed frame, the short push rod reaches the vertical position, in order to prevent the short push rod from continuously applying thrust to the back frame to cause the back frame to descend after exceeding the vertical position, and before the short push rod reaches the vertical position, the second section of the two-section stroke starts to act.
The back lifting mechanism provided by the invention reduces the thickness of the electric bed structure by converting the upper and lower bed frames into the inner and outer frames, and provides initial moment for lifting the back frame and continuous lifting moment in a thinner bed frame space by utilizing the combination of the short push rod and the long push rod through two-section travel, so that the problem that the bed frame of the electric bed is too thick is solved, and meanwhile, the problem that the initial moment of the ultrathin electric bed is insufficient is also solved.
Drawings
It is to be understood that all of the features, variations and/or specific embodiments of the invention may be combined in various combinations, except where clearly contradicted or incompatible.
Other features and advantages of the invention will be apparent from reading the following detailed description, given as non-limiting illustrations, in conjunction with the accompanying drawings:
FIG. 1 is a perspective view of a back lifting mechanism in a critical position for a first segment of travel and a second segment of travel in accordance with a preferred embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a perspective view of the back lifting mechanism in the highest position of the second stage of travel in accordance with a preferred embodiment of the present invention;
FIG. 4 is an enlarged partial perspective view of the short push rod of FIG. 1;
FIG. 5 is a partial perspective view of one embodiment of an electric bed having a back lifting mechanism in accordance with the present invention, wherein the back lifting mechanism is in an initial position;
FIG. 6 is a partial perspective view of one embodiment of an electric bed having a back lifting mechanism in accordance with the present invention, wherein the back lifting mechanism is in a critical position for a first segment of travel and a second segment of travel;
FIG. 7 is a partial perspective view of one embodiment of an electric bed having a back lift mechanism according to the present invention, wherein the back lift mechanism is in the highest position of the second stage of travel.
Detailed Description
It is to be understood that the drawings are not to scale but are merely schematic representations of various preferred features which are employed to illustrate the basic principles of the invention. The design features disclosed herein, such as size, orientation, positioning and shape, are determined according to the specific application and environment of use.
The present invention will be described in detail with reference to examples and drawings. In the drawings, like reference numerals refer to the same or equivalent elements of the present invention throughout the several views.
Fig. 1 to 4 show a preferred embodiment of a back lifting mechanism according to the present invention.
In this embodiment, the back lifting mechanism includes a push rod group, an outer fixed frame 1, an inner slide frame 2, and a back frame 3.
Wherein the inner sliding frame 2 is in sliding connection with the outer fixing frame 1 in a horizontal plane; the back frame 3 is pivoted to the inner slide frame 2 and is rotatable relative to the inner slide frame 2 and slidable relative to the outer fixed frame 1; the outer fixed frame 1 is provided with a chute 11; the push rod group comprises a short push rod 4 and a long push rod 5, one end 41 of the short push rod 4 is pivoted with the outer fixed frame 1, the other end 42 is pivoted with the back frame 3, one end of the long push rod 5 is pivoted relative to the outer fixed frame 1 and is provided with a sliding block 51, the sliding block 51 can slide in the sliding groove 11 relative to the outer fixed frame 1, and the other end 52 is pivoted with the waist frame 3; wherein, the sliding groove 11 on the outer fixed frame 1 and the sliding block 51 on the long push rod 5 form a free stroke configuration.
In this embodiment, the sliding of the inner slide frame 2 relative to the outer fixed frame 1 is driven by a push rod motor 6.
Further, one end 42 of the short push rod 4 is coaxially pivoted to the back frame 3 together with one end 52 of the long push rod 5.
Further, a sleeve is provided on the slider 51 on the long push rod 5 for reducing friction when the slider 51 slides in the chute 11 while reducing sound. Preferably, the sleeve is made of plastic.
Further, as shown in fig. 4, the short push rod 4 is composed of a circular tube 43 and a sleeve 44, the circular tube 43 is capable of expanding and contracting in the sleeve 44, and thrust is applied when the short push rod 4 is compressed, and no force is applied when it is extended.
During operation, the push rod group lifts the back frame 3 through a two-stage stroke:
When the back frame 3 is in the initial position, that is, in a state in which the back frame 3 is not lifted, the push rod motor 6 drives the inner slide frame 2 to slide in the outer fixed frame 1, so that the back frame 3 slides along with the inner slide frame, at this time, the length of the short push rod 4 remains unchanged and applies a pushing force to the back frame 3, so that the back frame 3 is lifted by a small angle, and at the same time, the slide block 51 on the long push rod 5 slides in the slide groove 11 of the fixed frame 1 for a free stroke, and at this time, the long push rod 5 does not exert a pushing action on the back frame 3. This process is defined as the "first-stage travel".
When the slider 51 slides from the end of the chute 11 close to the short push rod to the end far away from the short push rod, i.e., after the long push rod 5 completes its free stroke, as shown in fig. 1, the short push rod 4 stops applying the pushing force to the back frame 3, and at the same time, the push rod motor 6 continues to drive the sliding of the inner slide frame 2, the long push rod 5 starts applying the pushing force to the back frame 3, so that the back frame 3 continues to be lifted. This process is defined as the "second-stage travel". In the second stroke, the short push rod 3 is extended but does not push the back frame 3, and the round tube 33 of the short push rod 3 is always connected with the sleeve 34.
In the first stroke, the included angle between the short push rod 3 and the outer fixed frame 1 gradually increases, when the short push rod 3 is perpendicular to the outer fixed frame 1, the short push rod 4 reaches the vertical position, so as to prevent the short push rod 4 from continuously applying thrust to the back frame 3 to cause the back frame 3 to descend after exceeding the vertical position, and the two-stage stroke is formed by switching from the first stroke to the second stroke before the short push rod 3 reaches the vertical position.
As a variant, one end of the short push rod and one end of the long push rod can also be pivoted to the back frame, respectively, non-coaxially.
As a variant, the free travel arrangement of the long push rod can also be a slide provided on the lumbar frame and a length of runner provided on the long push rod.
As a variant, the free travel configuration of the long push rod can also be a telescopic distance of the long push rod. Fig. 5 to 7 are partial perspective views of an electric bed having the back lifting mechanism described above. Wherein in fig. 5, the back lifting mechanism is in an initial position; in fig. 6, the back lift mechanism is in a critical position transitioning from a first stage of travel to a second stage of travel; in fig. 7, the back lift mechanism is in the highest position of the second stage of travel.
In this embodiment, the electric bed has an outer frame and an inner frame, instead of the upper and lower frames of the prior art, thereby reducing the thickness of the frame structure, and further has the back lifting mechanism described above.
Wherein the outer fixed frame 1 in the back lifting mechanism is part of an outer bedframe and the inner sliding bedframe 2 is part of an inner bedframe.
Further, the electric bed has a push rod motor 6 for driving the inner bed frame to slide with respect to the outer bed frame.
Further, the electric bed can also be provided with a bed plate or wrap flexible material on the back frame of the back lifting mechanism.
The above embodiments are merely examples and do not limit the scope of the present invention. On the basis of this, a person skilled in the art can envision other embodiments that achieve the same functionality within the scope of the claims below. For example, the runner and slide could be replaced by other known forms and the sleeve could be made of other materials that meet performance requirements.
Those skilled in the art will recognize various embodiments and variations and modifications. In particular, it is to be understood that the above-described features, variations and/or embodiments of the invention may be combined with each other, except where clearly contradicted or incompatible. All such embodiments and variations and modifications are intended to be within the scope of the present invention.
Claims (10)
1. A back lifting mechanism for an electric bed, characterized in that the back lifting mechanism is provided with a push rod group, an outer fixed frame (1), an inner sliding frame (2) and a back frame (3), wherein the inner sliding frame (2) is in sliding connection with the outer fixed frame (1) in a horizontal plane, the back frame (3) is pivoted with the inner sliding frame (2) and can rotate relative to the inner sliding frame (2) and slide relative to the outer fixed frame (1), the push rod group comprises a short push rod (4) and a long push rod (5), one end of the short push rod (4) is pivoted with the back frame (3), the other end of the short push rod (4) is pivoted with the outer fixed frame (1), and one end of the long push rod (5) is pivoted with the back frame (3), and the other end of the long push rod (5) is pivoted with the outer fixed frame (1).
During the lifting of the back frame (3), the push rod group has a two-stage stroke;
in a first stroke, the inner sliding frame (2) slides relative to the outer fixed frame (1) so as to push the back frame (3) and enable the short push rod (4) to act on the back frame (3) and lift the same by a small angle beyond the plane, and meanwhile, the long push rod (5) does not push the back frame (3);
In a second stroke, the inner sliding frame (2) continues to slide relative to the outer fixed frame (1) so as to further push the back frame (3) and enable the long push rod (5) to act on the back frame (3) and further lift the back frame (3), and meanwhile the short push rod (4) does not push the back frame (3).
2. The back lifting mechanism according to claim 1, wherein the sliding of the inner slide frame (2) relative to the outer fixed frame (1) is driven by a push rod motor (6).
3. The back lifting mechanism according to claim 1, wherein the long push rod (5) and the fixed end of the outer fixed frame (1) have a free travel arrangement such that in the first travel the long push rod (5) does not exert a pushing action on the back frame (3).
4. A back lifting mechanism according to claim 3, wherein the free travel is configured as a length of runner provided on the outer fixed frame (1) and a slider (51) provided at one end of the long push rod (5), wherein the slider (51) is slidable in the runner (11).
5. The back lifting mechanism according to claim 4, wherein the slider (51) has a bushing thereon.
6. Back lifting mechanism according to claim 1, characterized in that the short push rod (4) consists of a round tube (43) and a sleeve (44) so as to have a free travel in the second section of travel without pushing the back frame (3) and that the round tube (43) of the short push rod (4) is not separated from the sleeve (44) when the back frame is lifted to a maximum angle.
7. Back lifting mechanism according to claim 1, characterized in that the short push rod (4) is pivoted to the back frame (3) coaxially with the long push rod (5).
8. Back lifting mechanism according to claim 1, characterized in that the short push rod (4) and the long push rod (5) are respectively pivoted to the back frame (3) non-coaxially.
9. The back lifting mechanism according to any of claims 1-8, wherein the second segment of the two-segment stroke is activated before the short push rod (4) reaches the vertical position.
10. An electric bed comprising the back lifting mechanism of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710264093.2A CN108720410B (en) | 2017-04-21 | 2017-04-21 | Back lifting mechanism for electric bed and electric bed with back lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710264093.2A CN108720410B (en) | 2017-04-21 | 2017-04-21 | Back lifting mechanism for electric bed and electric bed with back lifting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108720410A CN108720410A (en) | 2018-11-02 |
| CN108720410B true CN108720410B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710264093.2A Active CN108720410B (en) | 2017-04-21 | 2017-04-21 | Back lifting mechanism for electric bed and electric bed with back lifting mechanism |
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| Country | Link |
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| CN (1) | CN108720410B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113576201A (en) * | 2020-04-30 | 2021-11-02 | 麒盛科技股份有限公司 | Single-motor crib |
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| US6640365B1 (en) * | 2002-09-24 | 2003-11-04 | Kuo-Heey Chang | Electric bed |
| JP3157939U (en) * | 2009-12-23 | 2010-03-04 | 鋭龍興業股▲ふん▼有限公司 | Electric bed structure |
| JP2010172497A (en) * | 2009-01-29 | 2010-08-12 | Aisin Seiki Co Ltd | Bed device |
| CN203416987U (en) * | 2013-08-29 | 2014-02-05 | 常州市锐新医疗器械有限公司 | Adjustable electric bed |
| CN103799755A (en) * | 2012-11-06 | 2014-05-21 | 嘉兴市舒福德电动床有限公司 | Front electric motor drive structure of electric bed |
| CN104273973A (en) * | 2013-07-05 | 2015-01-14 | 嘉兴市舒福德电动床有限公司 | Sliding-block linkage for electric beds |
| CN204274865U (en) * | 2014-01-09 | 2015-04-22 | 榕懋实业股份有限公司 | back adjusting structure of electric bed |
| CN105534139A (en) * | 2016-02-04 | 2016-05-04 | 嘉兴佰世电动床有限公司 | Back hoisting frame of electric bed |
| CN205493271U (en) * | 2016-02-04 | 2016-08-24 | 嘉兴佰世电动床有限公司 | Intelligence remote controlled electric bed |
| CN106490877A (en) * | 2016-11-17 | 2017-03-15 | 嘉兴意合机电有限公司 | A kind of electronic bed system |
| CN207544732U (en) * | 2017-04-21 | 2018-06-29 | 麒盛科技股份有限公司 | A kind of mechanism for lifting back for beddo and the beddo with the mechanism |
-
2017
- 2017-04-21 CN CN201710264093.2A patent/CN108720410B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6640365B1 (en) * | 2002-09-24 | 2003-11-04 | Kuo-Heey Chang | Electric bed |
| JP2010172497A (en) * | 2009-01-29 | 2010-08-12 | Aisin Seiki Co Ltd | Bed device |
| JP3157939U (en) * | 2009-12-23 | 2010-03-04 | 鋭龍興業股▲ふん▼有限公司 | Electric bed structure |
| CN103799755A (en) * | 2012-11-06 | 2014-05-21 | 嘉兴市舒福德电动床有限公司 | Front electric motor drive structure of electric bed |
| CN104273973A (en) * | 2013-07-05 | 2015-01-14 | 嘉兴市舒福德电动床有限公司 | Sliding-block linkage for electric beds |
| CN203416987U (en) * | 2013-08-29 | 2014-02-05 | 常州市锐新医疗器械有限公司 | Adjustable electric bed |
| CN204274865U (en) * | 2014-01-09 | 2015-04-22 | 榕懋实业股份有限公司 | back adjusting structure of electric bed |
| CN105534139A (en) * | 2016-02-04 | 2016-05-04 | 嘉兴佰世电动床有限公司 | Back hoisting frame of electric bed |
| CN205493271U (en) * | 2016-02-04 | 2016-08-24 | 嘉兴佰世电动床有限公司 | Intelligence remote controlled electric bed |
| CN106490877A (en) * | 2016-11-17 | 2017-03-15 | 嘉兴意合机电有限公司 | A kind of electronic bed system |
| CN207544732U (en) * | 2017-04-21 | 2018-06-29 | 麒盛科技股份有限公司 | A kind of mechanism for lifting back for beddo and the beddo with the mechanism |
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| Publication number | Publication date |
|---|---|
| CN108720410A (en) | 2018-11-02 |
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