CN219594140U - Sofa headrest stretching device convenient to adjust - Google Patents

Abstract

The utility model relates to the technical field of sofa headrests and discloses a sofa headrest stretching device convenient to adjust, which comprises a backrest and a headrest, wherein the headrest is positioned at the top of the backrest, two corners at one end of the bottom of the headrest are respectively provided with a connecting groove, first fixing rods are fixedly arranged in the two connecting grooves, supporting rods are fixedly arranged at the two corners at one end of the top of the backrest, the top ends of the two supporting rods are respectively positioned in the two connecting grooves at the bottom of the headrest, the top ends of the two supporting rods are respectively rotatably sleeved on the first fixing rods in the two connecting grooves, two rod grooves are formed in the top of the backrest, and electric hydraulic rods are fixedly arranged in the two rod grooves.

Description

Sofa headrest stretching device convenient to adjust

Technical Field

The utility model belongs to the technical field of sofa headrests, and particularly relates to a sofa headrest stretching device convenient to adjust.

Background

The sofa is necessary furniture for many families, the sofa can provide a place for people to rest, people can rest by lying on the sofa, in order to improve the comfort level of rest, the sofa is provided with a headrest, and people can rest more comfortably by leaning on the headrest, however, the general headrest is not convenient for adjusting the inclination angle, and even the adjustment of the headrest can be completed by pulling the headrest by hands, so that the sofa headrest stretching device convenient for adjustment is provided.

Disclosure of Invention

In order to solve the problems set forth in the background art, the utility model provides the following technical scheme: the utility model provides a sofa headrest extension device convenient to adjust, including back and headrest, the headrest is located the top of back, the linking groove has all been seted up at two corners of headrest bottom one end, equal fixed mounting has first dead lever in the inside of two linking grooves, two equal fixed mounting of corners of back top one end have the bracing piece, the top of two bracing pieces is located the two linking grooves of headrest bottom respectively, and the top of two bracing pieces rotates respectively and cup joints on the first dead lever of two linking grooves, two pole grooves have been seted up at the top of back, equal fixed mounting has electric hydraulic stem in the inside of two pole grooves, two sliding grooves have been seted up in the bottom of headrest, equal slidable mounting has the sliding block in the inside of two sliding grooves, the flexible end of two electric hydraulic stems swing joint respectively in the bottom of two sliding blocks.

Further, the bottom of two sliding blocks is all offered jaggedly, and equal fixed mounting has the second dead lever in two jaggets, and the top of the flexible end of two electronic hydraulic stems is located the breach of two sliding block bottoms respectively, and the flexible end of two electronic hydraulic stems rotates respectively and cup joints on the second dead lever in two jaggets.

Further, two semicircular grooves are formed in two sides of the two sliding blocks, and limiting balls capable of rotating are arranged in each semicircular groove.

Further, both sides of the inner walls of the two sliding grooves are provided with sliding grooves, and half of the limiting balls on both sides of the two sliding blocks extend out of the semicircular grooves and are respectively and slidably arranged in the corresponding sliding grooves.

Further, the width of the headrest is the same as the width of the backrest.

Further, the engagement groove is rotated by an angle of degrees.

Further, the edges of the headrest and the backrest are both arranged in an arc shape.

Compared with the prior art, the utility model has the beneficial effects that:

the tilting angle of the headrest can be freely adjusted, the electric hydraulic rod is controlled to push the sliding block to move in the sliding groove at the bottom of the headrest, so that the headrest is pushed to rotate by taking the top ends of the two support rods as the center, the purpose of changing the tilting angle of the headrest is achieved, the headrest is not required to be manually pulled, and the use is convenient and quick.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the whole structure of the present utility model;

FIG. 3 is a schematic cross-sectional view of a side portion of the present utility model;

FIG. 4 is an enlarged schematic view of the structure of the present utility model A;

in the figure: 1. a backrest; 2. a headrest; 3. a connection groove; 4. a first fixing rod; 5. a support rod; 6. a rod groove; 7. an electric hydraulic rod; 8. a sliding groove; 9. a sliding block; 10. a notch; 11. a second fixing rod; 12. a semicircular groove; 13. a limit ball; 14. and a sliding groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model is shown in figures 1-4, which comprises a backrest 1 and a headrest 2, wherein the headrest 2 is positioned at the top of the backrest 1, two corners of one end of the bottom of the headrest 2 are respectively provided with a connecting groove 3, the interiors of the two connecting grooves 3 are respectively fixedly provided with a first fixed rod 4, two corners of one end of the top of the backrest 1 are respectively fixedly provided with a supporting rod 5, the tops of the two supporting rods 5 are respectively positioned in the two connecting grooves 3 of the bottom of the headrest 2, the tops of the two supporting rods 5 are respectively rotatably sleeved on the first fixed rods 4 in the two connecting grooves 3, the top of the backrest 1 is provided with two rod grooves 6, the interiors of the two rod grooves 6 are respectively fixedly provided with an electric hydraulic rod 7, the bottoms of the headrest 2 are respectively provided with two sliding grooves 8, the interiors of the two sliding grooves 8 are respectively and slidably provided with sliding blocks 9, and the telescopic ends of the two electric hydraulic rods 7 are respectively movably connected at the bottoms of the two sliding blocks 9.

Simultaneously, the bottom of two sliding blocks 9 has all been seted up breach 10, and equal fixed mounting has second dead lever 11 in two breaches 10, and the top of the flexible end of two electronic hydraulic stems 7 is located the breach 10 of two sliding blocks 9 bottoms respectively, and the flexible end of two electronic hydraulic stems 7 rotates respectively and cup joints on the second dead lever 11 in two breaches 10.

In addition, two semicircular grooves 12 are formed in two sides of the two sliding blocks 9, and a rotatable limiting ball 13 is arranged in each semicircular groove 12.

And, spout 14 has all been seted up to both sides of two sliding tray 8 inner walls, and half of the spacing ball 13 of two sliding block 9 both sides all stretches out semicircle groove 12 and slidable mounting respectively in corresponding spout 14, and spacing ball 13 can reduce the area of contact between sliding block 9 and the sliding tray 8 to reduce the frictional force between the two, make sliding block 9 more laborsaving when moving in sliding tray 8.

And, the width of the headrest 2 is the same as the width of the backrest 1.

The rotation angle of the engagement groove 3 is 90 °, and a range restriction function is provided for the rotation angle of the headrest 2.

The edges of the headrest 2 and the backrest 1 are both arc-shaped, thereby increasing certain comfort.

Working principle: when adjusting the inclination of headrest 2, through the electronic hydraulic stem 7 of control in two pole grooves 6 stretches out and draws back, make the flexible end of two electronic hydraulic stems 7 promote slider 9, let two slider 9 remove in two sliding grooves 8, the flexible end of electronic hydraulic stem 7 can rotate with the second dead lever 11 in slider 9 bottom breach 10 as the center, and the top of bracing piece 5 can rotate with the first dead lever 4 in two linking grooves 3 in headrest 2 bottom as the center, just so slider 9 can jack up the one end of headrest 2 when moving in sliding groove 8, the other end of messenger's headrest 2 rotates with the top of bracing piece 5 as the center, thereby reach the purpose of adjusting headrest 2 inclination.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a sofa headrest extension device convenient to adjust, includes back (1) and headrest (2), its characterized in that: the headrest (2) is located the top of back (1), link up groove (3) have all been seted up at two corners of headrest (2) bottom one end, equal fixed mounting has first dead lever (4) in the inside of two link up groove (3), two equal fixed mounting in corner of back (1) top one end have bracing piece (5), the top of two bracing pieces (5) is located two link up groove (3) of headrest (2) bottom respectively, and the top of two bracing pieces (5) is rotated respectively and is cup jointed on first dead lever (4) in two link up groove (3), two pole grooves (6) have been seted up at the top of back (1), two sliding tray (8) have been seted up in the inside of two pole grooves (6) equal fixed mounting of inside of two pole grooves (6), equal slidable mounting has sliding block (9) in the inside of two sliding tray (8), the flexible end of two electric hydraulic tray (7) is swing joint respectively in the bottom of two sliding block (9).

2. The easy-to-adjust sofa headrest extension device of claim 1, wherein: the bottoms of the two sliding blocks (9) are provided with notches (10), second fixing rods (11) are fixedly arranged in the two notches (10), the tops of the telescopic ends of the two electric hydraulic rods (7) are respectively located in the notches (10) at the bottoms of the two sliding blocks (9), and the telescopic ends of the two electric hydraulic rods (7) are respectively rotatably sleeved on the second fixing rods (11) in the two notches (10).

3. The easy-to-adjust sofa headrest extension device of claim 1, wherein: two semicircular grooves (12) are formed in two sides of the sliding blocks (9), and rotatable limiting balls (13) are arranged in each semicircular groove (12).

4. A sofa headrest extension device for facilitating adjustment as claimed in claim 3 wherein: both sides of the inner walls of the two sliding grooves (8) are provided with sliding grooves (14), and half of the limiting balls (13) on both sides of the two sliding blocks (9) extend out of the semicircular grooves (12) and are respectively and slidably arranged in the corresponding sliding grooves (14).

5. The easy-to-adjust sofa headrest extension device of claim 1, wherein: the width of the headrest (2) is the same as the width of the backrest (1).

6. The easy-to-adjust sofa headrest extension device of claim 1, wherein: the rotation angle of the engagement groove (3) is 90 degrees.

7. The easy-to-adjust sofa headrest extension device of claim 1, wherein: the edges of the headrest (2) and the backrest (1) are both arranged in an arc shape.