CN216797112U - Headrest stretching device - Google Patents
Headrest stretching device Download PDFInfo
- Publication number
- CN216797112U CN216797112U CN202220270834.4U CN202220270834U CN216797112U CN 216797112 U CN216797112 U CN 216797112U CN 202220270834 U CN202220270834 U CN 202220270834U CN 216797112 U CN216797112 U CN 216797112U
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- connecting rod
- headrest
- rod group
- plate
- connecting plate
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Abstract
The utility model discloses a headrest stretching device, which is characterized in that: the method comprises the following steps: the mounting plate is fixedly mounted on a head rest frame of the sofa; the ratchet wheel is provided with a first connecting plate and a second connecting plate and is fixed on the mounting plate through the first connecting plate; the headrest connecting plate, the first connecting rod group and the second connecting rod group; the upper end of the first connecting rod group is pivoted to the rear end position of the headrest connecting plate, the lower end of the first connecting rod group is pivoted to the outer end position of the second connecting plate, the upper end of the second connecting rod group is pivoted to the middle position of the headrest connecting plate, the lower end of the second connecting rod group is pivoted to the mounting plate, and meanwhile the second connecting rod group is pivoted with the second connecting plate; after the second connecting plate rotates, the first connecting rod group and the second connecting rod group drive the headrest connecting plate to swing back and forth. The utility model has the characteristics of simple structure, small size and compactness.
Description
Technical Field
The utility model relates to the field of sofa accessories, in particular to a headrest stretching device.
Background
To increase the comfort of the sofa, it is common to mount adjustable headrests on the top of the sofa backrest and adjustable lumbar backrests in the middle of the backrest, the positions of these headrests relative to the backrest being adjustable to adjust the sofa to a relatively comfortable position during daily use.
In the prior art, when the headrest with the adjustable position is mounted on the backrest, more parts are required to be used, so that the mounting structure of the headrest on the backrest is complex, and the size of the headrest mounting structure is large. Therefore, there is room for further improvement in the existing commercial adjustable headrest mounting structure.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a headrest stretching device which has the characteristics of simple structure, small size and compactness.
In order to achieve the purpose, the utility model provides the following technical scheme:
a headrest stretching device is characterized in that: the method comprises the following steps:
the mounting plate is fixedly mounted on the head rest frame of the sofa;
the ratchet wheel is provided with a first connecting plate and a second connecting plate and is fixed on the mounting plate through the first connecting plate;
the headrest connecting plate, the first connecting rod group and the second connecting rod group; the upper end of the first connecting rod group is pivoted to the rear end position of the headrest connecting plate, the lower end of the first connecting rod group is pivoted to the outer end position of the second connecting plate, the upper end of the second connecting rod group is pivoted to the middle position of the headrest connecting plate, the lower end of the second connecting rod group is pivoted to the mounting plate, and meanwhile the second connecting rod group is pivoted with the second connecting plate;
after the second connecting plate rotates, the first connecting rod group and the second connecting rod group drive the headrest connecting plate to swing back and forth.
Preferably, the second linkage comprises an upper connecting rod and a lower connecting rod, the upper end of the upper connecting rod is pivoted to the middle position of the headrest connecting plate, the lower end of the upper connecting rod is pivoted to the end part of the lower connecting rod, the middle part of the upper connecting rod is pivoted to the second connecting plate, and one end, back to the upper connecting rod, of the lower connecting rod is pivoted to the mounting plate.
Preferably, the first link group, the upper link and the lower link are provided with bending parts.
Preferably, the headrest connecting plate comprises a pivoting plate for pivotally connecting the first connecting rod group and the second connecting rod group and a headrest plate for connecting the headrest.
Preferably, the mounting plate is provided with a part for connecting the first connecting plate and the lower connecting rod, which protrudes outwards.
The utility model has the advantages that: under a natural state, the ratchet wheel has a unidirectional rotation function, and when the second connecting plate rotates in a unidirectional mode, the first connecting rod group and the second connecting rod group drive the headrest connecting plate to integrally swing forwards so as to support the head of a user; the second connecting plate can rotate reversely by triggering the switch of the ratchet wheel, and the first connecting rod group and the second connecting rod group drive the headrest connecting plate to fold; in the structure, the headrest connecting plate can realize the functions of unfolding and folding only through the ratchet wheel, the first connecting rod group and the second connecting rod group, and has the characteristics of simple and compact structure, less parts and small size.
Drawings
Fig. 1 is a schematic view of the headrest extending device according to the present embodiment in an open state;
fig. 2 is a schematic view of the headrest extending device provided in this embodiment in a folded state;
fig. 3 is a schematic view of the headrest extending device provided in this embodiment mounted on the headrest frame.
Detailed Description
The headrest extension apparatus of the present invention will be further described with reference to fig. 1 to 3.
A headrest stretching device is characterized in that: the method comprises the following steps: the mounting plate 5 is fixedly mounted on a headrest frame 6 of the sofa chair through bolts; a ratchet 4 having a first connecting plate 41 and a second connecting plate 42, the ratchet 4 being fixed to the mounting plate 5 by the first connecting plate 41, i.e., the first connecting plate 41 being fixed to the mounting plate 5 by a plurality of bolts; the headrest connecting plate 1, the first connecting rod group 2 and the second connecting rod group 3; the upper end of the first connecting rod group 2 is pivoted to the rear end of the head rest connecting plate 1, the lower end of the first connecting rod group 2 is pivoted to the outer end of the second connecting plate 42, the upper end of the second connecting rod group 3 is pivoted to the middle position of the head rest connecting plate 1, the lower end of the second connecting rod group 3 is pivoted to the mounting plate 5, and meanwhile, the second connecting rod group 3 is pivoted with the second connecting plate 42; after the second connecting plate 42 rotates, the first connecting rod group 2 and the second connecting rod group 3 drive the headrest connecting plate 1 to swing back and forth.
Specifically, the first connecting plate 41 is a fixed structure relative to the ratchet 4, and is used for fixing the ratchet 4 on the mounting plate 5; as shown in fig. 1, the second connecting plate 42 can rotate counterclockwise in one direction with respect to the ratchet 4, and when the corresponding switch is triggered, the second connecting plate 42 can rotate forward and backward. The ratchet is prior art and the present embodiment will not be described in detail.
The first link group 2 is a rod body, the second link group 3 includes an upper link 31 and a lower link 32, the upper end of the upper link 31 is pivoted to the middle position of the headrest connecting plate 1, the lower end of the upper link 31 is pivoted to the end of the lower link 32, the middle part of the upper link is pivoted to the second connecting plate 42, and one end of the lower link 32, which is back to the upper link 31, is pivoted to the mounting plate 5.
The first link group 2, the upper link 31 and the lower link 32 are all provided with a bending part 7. In the process that the first connecting rod group 2 and the second connecting rod group 3 rotate relatively, the bent parts can be avoided mutually, so that the first connecting rod group 2 and the second connecting rod group 3 can rotate smoothly.
The headrest connecting plate 1 comprises a pivoting plate 12 for pivoting the first connecting rod group 2 and the second connecting rod group 3 and a headrest plate 11 for connecting the headrest, and the headrest plate 11 is perpendicular to the pivoting plate 12 so as to facilitate positioning and mounting of the headrest on the headrest plate 11.
The mounting plate 5 is provided with a portion for connecting the first connecting plate 41 and the lower link 32, which protrudes outward, and the outward protruding structure is formed by bending the mounting plate 5. With this configuration, the ratchet 4 and the second link group 3 can be provided separately from the headrest frame 6, and the movement of the corresponding parts can be facilitated.
When the headrest frame is used in detail, two groups of headrest stretching devices are arranged on the headrest frame 6 in a symmetrical state through corresponding mounting plates 5; the headrests 8 are arranged on the two headrest connecting plates 1, and in the state shown in fig. 2, when the headrests are required to be adjusted to swing forwards, the headrests 8 connected to the headrest plates are directly pulled forwards, and in a natural state, the headrests cannot swing backwards due to the fact that the second connecting plates 42 rotate in a single direction, and the heads of users can directly lean against the headrests; if the back swing of the headrest needs to be adjusted, a corresponding switch on the ratchet 4 needs to be triggered, so that the second connecting plate 42 can rotate reversely, and the back swing of the headrest can be adjusted. In the structure, the headrest connecting plate 1 can be unfolded and folded only through the ratchet 4, the first connecting rod group 2, the upper connecting rod 31 and the lower connecting rod 32, and has the characteristics of simple and compact structure, less parts and small size.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.
Claims (5)
1. A headrest stretching device is characterized in that: the method comprises the following steps:
the mounting plate is fixedly mounted on the head rest frame of the sofa;
the ratchet wheel is provided with a first connecting plate and a second connecting plate and is fixed on the mounting plate through the first connecting plate;
the headrest connecting plate, the first connecting rod group and the second connecting rod group; the upper end of the first connecting rod group is pivoted to the rear end position of the headrest connecting plate, the lower end of the first connecting rod group is pivoted to the outer end position of the second connecting plate, the upper end of the second connecting rod group is pivoted to the middle position of the headrest connecting plate, the lower end of the second connecting rod group is pivoted to the mounting plate, and meanwhile the second connecting rod group is pivoted with the second connecting plate;
after the second connecting plate rotates, the first connecting rod group and the second connecting rod group drive the headrest connecting plate to swing back and forth.
2. The headrest extension device as claimed in claim 1, wherein: the second connecting rod group comprises an upper connecting rod and a lower connecting rod, the upper end of the upper connecting rod is pivoted to the middle position of the headrest connecting plate, the lower end of the upper connecting rod is pivoted to the end portion of the lower connecting rod, the middle portion of the upper connecting rod is pivoted with the second connecting plate, and one end, back to the upper connecting rod, of the lower connecting rod is pivoted to the mounting plate.
3. The headrest extension device as claimed in claim 2, wherein: the first connecting rod group, the upper connecting rod and the lower connecting rod are all provided with bending parts.
4. The headrest extension device as claimed in claim 1, wherein: the headrest connecting plate comprises a pivoting plate for pivoting the first connecting rod group and the second connecting rod group and a headrest plate for connecting the headrest.
5. The headrest extension device as claimed in claim 2, wherein: the mounting panel supplies the outside protrusion setting in the position that first connecting plate and lower connecting rod are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220270834.4U CN216797112U (en) | 2022-02-10 | 2022-02-10 | Headrest stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220270834.4U CN216797112U (en) | 2022-02-10 | 2022-02-10 | Headrest stretching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216797112U true CN216797112U (en) | 2022-06-24 |
Family
ID=82042221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220270834.4U Active CN216797112U (en) | 2022-02-10 | 2022-02-10 | Headrest stretching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216797112U (en) |
-
2022
- 2022-02-10 CN CN202220270834.4U patent/CN216797112U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |