CN220655204U - Headrest and backrest switching mechanism and sofa - Google Patents
Headrest and backrest switching mechanism and sofa Download PDFInfo
- Publication number
- CN220655204U CN220655204U CN202322502983.6U CN202322502983U CN220655204U CN 220655204 U CN220655204 U CN 220655204U CN 202322502983 U CN202322502983 U CN 202322502983U CN 220655204 U CN220655204 U CN 220655204U
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- headrest
- backrest
- movable
- connecting rod
- switching mechanism
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- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The utility model discloses a headrest and backrest switching mechanism and a sofa, comprising: a support body; at least two groups of fixing seats; at least two groups of movable seats, the first connecting rod, the fixed seat and the second connecting rod are hinged in sequence to form a parallelogram mechanism, the distance between two hinged points on the first connecting rod is greater than the distance between two hinged points on the movable seats, and the parallelogram mechanism is provided with two limit positions where the first connecting rod and the second connecting rod are mutually stopped; and the movable supporting part is correspondingly configured to be positioned at the headrest position and the backrest position respectively when the parallelogram mechanism is positioned at two extreme positions. The movable supporting part can be used as a headrest function and also can be used as a backrest function, the first connecting rod and the second connecting rod are mutually stopped, a stable balance state can be reached, the posture of the movable supporting part is kept unchanged all the time, the back or the head and neck of a user can be stably supported, and the seat depth and the effective backrest height of the sofa can be adjusted.
Description
Technical Field
The utility model relates to the technical field of sofas, in particular to a headrest and backrest switching mechanism and a sofa.
Background
Sofa is a piece of furniture that is essential to many households. The style and style of the sofa sold in the market are various, especially the seat depth and the effective backrest height are two important indexes, the seat depth generally refers to the distance from the seat surface to the highest point of the backrest, the effective backrest height generally refers to the distance from the seat surface to the highest point of the backrest, the common families can select the sofa with proper seat depth and backrest effective height, however, the heights of each user are different, the sofa is difficult to meet the individual requirements of each user, the conventional sofa often cannot adjust the seat depth and the effective backrest height, some users can rely on the pillow cushion back to achieve the effect of assisting the backrest and the pillow cushion head and neck to achieve the effect of assisting the headrest, but the support area and the range of the pillow cushion are limited after all, the sofa is not stable enough and is easy to drop, and the sofa is inconvenient to use.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a headrest and backrest switching mechanism which can adjust the seat depth and the effective backrest height.
The utility model also provides a sofa with the headrest and backrest switching mechanism.
A headrest and backrest switching mechanism according to an embodiment of the first aspect of the present utility model includes: a support body; at least two groups of fixed seats are respectively arranged on the supporting main body at intervals; the movable seat, the first connecting rod, the fixed seat and the second connecting rod are sequentially hinged and form a parallelogram mechanism, the distance between two hinge points on the first connecting rod is greater than the distance between two hinge points on the movable seat, and the parallelogram mechanism is provided with two limiting positions where the first connecting rod and the second connecting rod are mutually stopped; and the movable supporting parts are respectively and correspondingly configured to be positioned at a headrest position and a backrest position when the parallelogram mechanism is positioned at two limit positions.
Has at least the following beneficial effects: the switching mechanism can conveniently adjust the position of the movable supporting part on the supporting main body, when the movable supporting part rotates to the headrest position, the switching mechanism can be used as a headrest function, when the movable supporting part rotates to the backrest position, the switching mechanism can be used as a backrest function, and just corresponds to two limiting positions of the parallelogram mechanism, when the two limiting positions are located, the first connecting rod and the second connecting rod are mutually stopped, a stable balance state can be reached, the posture of the movable supporting part is always kept unchanged according to the parallelogram principle, the movable supporting part is ensured to stably support the back or the head and neck of a user, and accordingly the seat depth and the backrest effective height of a sofa can be adjusted.
According to some embodiments of the utility model, the movable support member is inclined gradually rearward from bottom to top.
According to some embodiments of the utility model, the rearward inclination angle of the movable support member is 10 ° to 20 °.
According to some embodiments of the utility model, the support body comprises a seat cushion and a fixed backrest, the fixed backrest being located on a rear side of the seat cushion and an upper side of the fixed backrest being higher than an upper side of the seat cushion, a lower side of the movable support member abutting against the upper side of the fixed backrest when the movable support member is in a headrest position, a lower side of the movable support member abutting against the upper side of the seat cushion and a rear side of the movable support member abutting against a front side of the fixed backrest when the movable support member is in a backrest position.
According to some embodiments of the utility model, when the movable support member is in the headrest position, the hinge point of the first link and the movable seat is located rearward and upward of the hinge point of the first link and the fixed seat.
According to some embodiments of the utility model, when the movable supporting component is located at the backrest position, the hinge point of the first connecting rod and the movable seat is located at the front lower part of the hinge point of the first connecting rod and the fixed seat.
According to some embodiments of the utility model, the fixed backrest is provided with at least two groups of movable slits at intervals, the fixed seats are installed in the movable slits in a one-to-one correspondence, and the movable slits are suitable for the first connecting rod and the second connecting rod to pass through.
According to some embodiments of the utility model, a shaped bar is connected between two adjacent sets of the first links.
According to some embodiments of the utility model, a shaped rod is connected between two adjacent sets of the second links.
A sofa according to an embodiment of the second aspect of the present utility model includes a sofa main body and a headrest and backrest switching mechanism according to the above-described embodiment of the first aspect of the present utility model, the support main body being mounted on the sofa main body.
Has at least the following beneficial effects: the sofa has all the beneficial effects brought by the switching mechanism and is not repeated here.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of the structure of an embodiment of the present utility model when the movable support is in the headrest position;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1;
FIG. 3 is a schematic view of the structure of the movable supporting component in the backrest position according to the embodiment of the present utility model;
FIG. 4 is a schematic view of a portion of the structure of FIG. 3;
FIG. 5 is a schematic view of the structure of an embodiment of the present utility model with the movable support member between a headrest position and a backrest position;
FIG. 6 is a schematic view of the internal structure of FIG. 5;
fig. 7 is a schematic structural diagram of fig. 5 at another view angle.
Reference numerals: the sofa comprises a sofa main body 1, a support main body 2, a cushion 21, a fixed backrest 22, a movable gap 23, a movable seat 3, a first connecting rod 4, a fixed seat 5, a second connecting rod 6, a movable support part 7 and a shaping rod 8.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 7, the present utility model discloses a headrest and backrest switching mechanism including a support main body 2, at least two sets of fixed seats 5, at least two sets of movable seats 3, and a movable support member 7.
Referring to fig. 2, 4, 6 and 7, at least two groups of fixed seats 5 are respectively installed on the supporting body 2 at intervals, a first connecting rod 4 and a second connecting rod 6 are connected between each group of movable seats 3 and each group of fixed seats 5, and the movable seats 3, the first connecting rod 4, the fixed seats 5 and the second connecting rod 6 are hinged in sequence and form a parallelogram mechanism.
It should be noted that, the distance between the two hinge points on the first link 4 is greater than the distance between the two hinge points on the movable seat 3, as shown in fig. 2 and 4, and the parallelogram mechanism has two limit positions where the first link 4 and the second link 6 stop each other, and the parallelogram mechanism is in a state between the two limit positions as shown in fig. 6.
Referring to fig. 1 to 4, the movable supporting member 7 is provided with at least two sets of movable seats 3 at intervals, and when the parallelogram mechanism is located at two extreme positions, the movable supporting member 7 is correspondingly configured to be located at the headrest position and the backrest position, respectively, so that a user can conveniently adjust the position of the movable supporting member 7.
It can be understood that the switching mechanism can drive the movable supporting component 7 by adopting a manual rotation adjustment mode of a user, and can also connect an electric telescopic cylinder on the first connecting rod 4 or the second connecting rod 6 to realize automatic adjustment of the movable supporting component 7.
When the movable supporting member 7 rotates to the headrest position, it can be used as a headrest function, when the movable supporting member 7 rotates to the backrest position, it can be used as a backrest function, and it just corresponds to two extreme positions of the parallelogram mechanism, and when the two extreme positions are, the first link 4 and the second link 6 are stopped against each other, and a stable equilibrium state can be reached.
According to the parallelogram principle, the posture of the movable supporting part 7 is kept unchanged all the time, so that the movable supporting part 7 can stably support the back or the head and neck of a user, and the seat depth and the effective backrest height of the sofa can be adjusted.
In some embodiments of the present utility model, referring to fig. 2, 4, 6 and 7, the movable supporting member 7 is gradually inclined backward from bottom to top, and the backward inclination angle of the movable supporting member 7 may be specifically set in the range of 10 ° to 20 °, which can support the back and head and neck of the user well with less fatigue.
Referring to fig. 1 and 3, in some embodiments, the support body 2 includes a seat cushion 21 and a fixed backrest 22, the fixed backrest 22 being located at a rear side of the seat cushion 21 and an upper side surface of the fixed backrest 22 being higher than an upper side surface of the seat cushion 21.
When the movable support member 7 is located at the headrest position, referring to fig. 1, the lower side surface of the movable support member 7 abuts against the upper side surface of the fixed backrest 22, so that the movable support member 7 can also be supported by the upper side surface of the fixed backrest 22, and is very stable.
When the movable support member 7 is located at the backrest position, referring to fig. 3, the lower side surface of the movable support member 7 abuts against the upper side surface of the seat cushion 21 and the rear side surface of the movable support member 7 abuts against the front side surface of the fixed backrest 22, so that the movable support member 7 can also be supported by the upper side surface of the seat cushion 21 and the front side surface of the fixed backrest 22 together, and is very stable.
Referring to fig. 2, in some embodiments, when the movable supporting component 7 is located at the headrest position, the hinge point of the first link 4 and the movable seat 3 is located at the rear upper side of the hinge point of the first link 4 and the fixed seat 5, and the first link 4 is similar to a reclined posture, so as to achieve a self-balanced state, and the first link 4 can be prevented from tilting forward, thereby preventing the movable supporting component 7 from tilting forward.
Referring to fig. 4, in some embodiments, when the movable supporting component 7 is located at the backrest position, the hinge point of the first link 4 and the movable seat 3 is located at the front lower side of the hinge point of the first link 4 and the fixed seat 5, and the first link 4 is in a self-balanced state similar to the posture of the low head.
The fixed backrest 22 may be provided with at least two sets of movable slits 23 at intervals, referring to fig. 7, in some embodiments, the fixed backrest 22 is provided with two sets of movable slits 23 at intervals, referring to fig. 2 and 4, the fixed seats 5 are installed in the movable slits 23 in a one-to-one correspondence manner, the movable slits 23 are suitable for the first connecting rod 4 and the second connecting rod 6 to pass through, so that the first connecting rod 4 and the second connecting rod 6 are prevented from being interfered by the fixed backrest 22 in a rotation range, and a good hiding effect can be achieved, so that the fixed backrest is attractive.
In some embodiments, referring to fig. 6, a shaping rod 8 is connected between two adjacent first links 4, which serves to further stabilize and strengthen the movable supporting member 7 against twisting back and forth. Of course, in other embodiments, the shaping bars 8 may also be connected between two adjacent sets of second links 6.
Referring to fig. 1 to 7, the present utility model also discloses a sofa, comprising a sofa main body 1 and a headrest and backrest switching mechanism of the above embodiment, wherein a support main body 2 is mounted on the sofa main body 1. The sofa has all the beneficial effects brought by the switching mechanism and is not repeated here.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
Of course, the present utility model is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are included in the scope of the present utility model as defined in the claims.
Claims (10)
1. A headrest and backrest switching mechanism, characterized by comprising:
a support body;
at least two groups of fixed seats are respectively arranged on the supporting main body at intervals;
the movable seat, the first connecting rod, the fixed seat and the second connecting rod are sequentially hinged and form a parallelogram mechanism, the distance between two hinge points on the first connecting rod is greater than the distance between two hinge points on the movable seat, and the parallelogram mechanism is provided with two limiting positions where the first connecting rod and the second connecting rod are mutually stopped;
and the movable supporting parts are respectively and correspondingly configured to be positioned at a headrest position and a backrest position when the parallelogram mechanism is positioned at two limit positions.
2. The headrest and backrest switching mechanism according to claim 1, wherein the movable support member is gradually inclined rearward from bottom to top.
3. The headrest and backrest switching mechanism according to claim 2, wherein the rearward inclination angle of the movable support member is 10 ° to 20 °.
4. A headrest and back switching mechanism as claimed in claim 2 or 3, wherein the support body comprises a seat cushion and a fixed back rest located on the rear side of the seat cushion and having an upper side surface higher than the upper side surface of the seat cushion, the lower side surface of the movable support member abutting against the upper side surface of the fixed back rest when the movable support member is in the headrest position, the lower side surface of the movable support member abutting against the upper side surface of the seat cushion and the rear side surface of the movable support member abutting against the front side surface of the fixed back rest when the movable support member is in the back rest position.
5. The headrest and backrest switching mechanism according to claim 4, wherein the hinge point of the first link and the movable seat is located rearward and upward of the hinge point of the first link and the fixed seat when the movable support member is in the headrest position.
6. The headrest and backrest switching mechanism according to claim 5, wherein the hinge point of the first link and the movable seat is located forwardly and downwardly of the hinge point of the first link and the fixed seat when the movable support member is located in the backrest position.
7. The headrest and backrest switching mechanism according to claim 4, wherein the fixed backrest is provided with at least two sets of movable slits at intervals, the fixed seats are mounted in the movable slits in a one-to-one correspondence, and the movable slits are adapted to be penetrated by the first connecting rod and the second connecting rod.
8. A headrest and backrest switching mechanism according to claim 1 wherein shaped bars are connected between adjacent sets of said first links.
9. A headrest and backrest switching mechanism according to claim 1 wherein shaped bars are connected between adjacent sets of said second links.
10. A sofa comprising a sofa body and a headrest and backrest switching mechanism according to any one of claims 1 to 9, said support body being mounted on said sofa body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322502983.6U CN220655204U (en) | 2023-09-06 | 2023-09-06 | Headrest and backrest switching mechanism and sofa |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322502983.6U CN220655204U (en) | 2023-09-06 | 2023-09-06 | Headrest and backrest switching mechanism and sofa |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220655204U true CN220655204U (en) | 2024-03-26 |
Family
ID=90343910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322502983.6U Active CN220655204U (en) | 2023-09-06 | 2023-09-06 | Headrest and backrest switching mechanism and sofa |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220655204U (en) |
-
2023
- 2023-09-06 CN CN202322502983.6U patent/CN220655204U/en active Active
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| GR01 | Patent grant | ||
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