Folding headrest supporting mechanism for armchair

Abstract

The utility model relates to the technical field of headrest support, and discloses a folding headrest support mechanism for an armchair, which comprises a sofa and a folding headrest, the rear end of the sofa is fixedly connected with a backrest, the front end of the outside of the backrest is fixedly connected with a mounting plate, the left and right sides of the front end of the mounting plate are fixedly connected with connecting blocks, and the connecting blocks are fixedly connected with the backrest. Supporting rods are fixedly connected to the interiors of the connecting blocks, rotating plates are rotatably connected to the exteriors of the supporting rods, first rotating rods are slidably connected to the interiors of the rotating plates, tooth groove plates are fixedly connected to the close sides of the two rotating plates, and transmission blocks are rotatably connected to the exteriors of the first rotating rods; and tooth mark plates are fixedly connected to the left side and the right side of the transmission block. The pillow can adapt to different use postures of a user, provides proper support according to the change of the head position of the user, effectively relieves the pressure of the neck, and enables the user to keep comfortable in various postures.

Description

Technical Field

[0001] This utility model relates to the field of headrest support technology, and in particular to a folding headrest support mechanism for single sofas. Background Technology

[0002] A folding headrest for a single sofa is a component installed on a single sofa to support the head. Its main feature is that the headrest part can be folded. It is an important part of the sofa, mainly providing a comfortable head position for users when sitting or leaning on the sofa. The headrest can also be changed in shape through the folding function to meet different usage scenarios and needs. Furniture designers have gradually realized the importance of adjustable headrests, and folding headrest support mechanisms have emerged.

[0003] Typically, a headrest is fixed directly to the top of the sofa back. The headrest contains filling material, such as sponge or polyester fiber, to provide soft support for the head. When the head rests on the headrest, the filling material undergoes elastic deformation under the pressure of the head, generating a supporting force that is equal in magnitude and opposite in direction to the pressure of the head. This supporting force is evenly distributed on the surface of the headrest that contacts the head to maintain the stability of the head.

[0004] In existing technologies, headrests are directly fixed to the back of the sofa. Users have different needs for headrest height depending on their posture. When a user is reclining, their head position is lower than when sitting, and the headrest needs to be lowered accordingly to provide proper support. Since the headrest cannot be adjusted up and down, it cannot adapt to this change in posture, resulting in the head not fitting well against the headrest and failing to obtain a comfortable experience. Therefore, a folding headrest support mechanism for single sofas is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a folding headrest support mechanism for single sofas, aiming to improve the problem that the headrests in the prior art cannot be adjusted up and down, cannot adapt to changes in user posture, and cannot provide a comfortable experience.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A folding headrest support mechanism for a single sofa includes a sofa and a folding headrest. A backrest is fixedly connected to the rear end of the sofa. A mounting plate is fixedly connected to the outer front end of the backrest. Connecting blocks are fixedly connected to the left and right sides of the front end of the mounting plate. A support rod is fixedly connected inside the connecting block. A rotating plate is rotatably connected to the outside of the support rod. A rotating rod is slidably connected inside the rotating plate. Gear plates are fixedly connected to adjacent sides of both rotating plates. A transmission block is rotatably connected to the outside of the rotating rod. Gear plates are fixedly connected to the left and right sides of the transmission block. An eccentric pressure block is rotatably connected to the outer right side of the rotating rod. A pull rod is fixedly connected to one outer side of the eccentric pressure block. A support block is fixedly connected to the front side of the transmission block. A folding headrest is fixedly connected to the front end of the support block. A threaded assembly for fixing the thread is threaded inside the support block.

[0008] As a further description of the above technical solution:

[0009] The threaded assembly includes a bolt, the external thread of which is connected to the interior of the support block, and a nut is connected to the external thread of the bolt.

[0010] As a further description of the above technical solution:

[0011] The mounting plate has multiple sleeve rods fixedly connected inside, and each of the multiple sleeve rods has a rotating rod II rotatably connected inside. The rear end of the rotating rod II is fixedly connected to a bearing block. The bearing block has multiple support shafts fixedly connected inside, and each of the multiple support shafts has a locking claw rotatably connected to the outside. The bearing block has multiple springs fixedly connected inside, and the backrest has multiple slots inside.

[0012] As a further description of the above technical solution:

[0013] The two toothed plates are meshed with the toothed plate, and the outer side of the eccentric pressure block abuts against the outer side of the rotating plate on the right.

[0014] As a further description of the above technical solution:

[0015] The external thread of the bolt is connected to the internal front end of the transmission block, and the external part of the nut is in contact with the external part of the support block;

[0016] As a further description of the above technical solution:

[0017] The sleeve rod is slidably connected to the inside of the slot, and the bearing block is rotatably connected to the inside of the sleeve rod.

[0018] As a further description of the above technical solution:

[0019] The outer end of the engaging pawl is rotatably connected to the inside of the sleeve rod, and the other end of the spring is fixedly connected to the outer side of the engaging pawl;

[0020] As a further description of the above technical solution:

[0021] The outer side of the engaging claw abuts against the inner side of the slot, and a rotating block is fixedly connected to the front end of the rotating rod.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by pulling the lever, the eccentric pressure block is released from the pressure on the rotating plate, so that the toothed plate and the toothed groove plate are disengaged. At this time, the folding headrest can be rotated to adjust the up and down angle. After adjusting to a comfortable angle, the eccentric pressure block is tightened again, so that the toothed plate and the toothed groove plate are re-engaged, thus fixing the folding headrest. It can adapt to different user postures and provide just the right support according to the changes in the user's head position, effectively relieving neck pressure and allowing the user to remain comfortable in various postures.

[0024] 2. In this utility model, the folding headrest is installed by inserting the sleeve rod into the slot of the backrest and then rotating the rotating block to drive the locking claw to rotate. The spring pushes out the locking claw and locks it into the slot. No professional tools or complicated operating steps are required. Ordinary users can easily complete the installation, or quickly install it themselves when they need to replace the headrest, saving time and effort. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the folding headrest support mechanism for a single sofa proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the folding headrest structure of the folding headrest support mechanism for a single sofa proposed in this utility model.

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0029] Legend:

[0030] 1. Sofa; 2. Backrest; 3. Mounting plate; 4. Connecting block; 5. Support rod; 6. Rotating plate; 7. Rotating rod one; 8. Gear plate; 9. Transmission block; 10. Gear mark plate; 11. Eccentric pressure block; 12. Pull rod; 13. Support block; 14. Folding headrest; 15. Bolt; 16. Nut; 17. Sleeve rod; 18. Rotating rod two; 19. Bearing block; 20. Support shaft; 21. Engaging claw; 22. Spring; 23. Slot; 24. Rotating block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1 to 3 An embodiment of this utility model provides a folding headrest support mechanism for a single sofa, including a sofa 1 and a folding headrest 14. A backrest 2 is fixedly connected to the rear end of the sofa 1, providing back support for the user so that the user can sit comfortably. An mounting plate 3 is fixedly connected to the front end of the backrest 2. The mounting plate 3 is the mounting and support component for the folding headrest 14. Connecting blocks 4 are fixedly connected to the left and right sides of the front end of the mounting plate 3. The connecting blocks 4 are used to install support rods 5. The support rods 5 are fixedly connected inside the connecting blocks 4, and the support rods 5 provide a fulcrum for the rotating plate 6.

[0033] The rotating plate 6 is rotatably connected to the outside of the support rod 5. A rotating rod 7 is slidably connected inside the rotating plate 6. Gear plates 8 are fixedly connected to adjacent sides of both rotating plates 6. A transmission block 9 is rotatably connected to the outside of the rotating rod 7. The transmission block 9 rotates the folding headrest 14, thereby adjusting its angle. Gear plates 10 are fixedly connected to both sides of the transmission block 9. The two gear plates 8 are meshed with the gear plates 10, allowing for adjustment of the headrest angle. Users can adjust the headrest position according to their needs. The rotating rod 7 is rotatably connected to the right side of the outside of the rotating rod 7. An eccentric pressure block 11 is attached to lock the meshing between the toothed plate 8 and the toothed plate 10, thereby fixing the folding headrest 14 after adjustment. The outside of the eccentric pressure block 11 abuts against the outside of the right rotating plate 6. A pull rod 12 is fixedly connected to one side of the eccentric pressure block 11, which is used by the user to pull the eccentric pressure block 11. A support block 13 is fixedly connected to the front side of the transmission block 9, which supports the folding headrest 14. The front end of the support block 13 is fixedly connected to the folding headrest 14, which conforms to the curve of the user's head, provides comfortable support for the head, effectively relieves neck pressure, and allows the user to sit for a long time without fatigue.

[0034] The internal threaded connection of the support block 13 is for fixing the threaded assembly, which includes a bolt 15. The external thread of the bolt 15 is connected to the internal front end of the transmission block 9. The external thread of the bolt 15 is connected to the inside of the support block 13. The external thread of the bolt 15 is connected to a nut 16 to prevent the headrest from loosening during daily use and frequent adjustment. The outside of the nut 16 is in contact with the outside of the support block 13.

[0035] Reference Figure 2 , Figure 4 The mounting plate 3 has multiple sleeve rods 17 fixedly connected inside. The sleeve rods 17 are used to embed into the backrest 2 and provide rotation space for the rotating rod 18. The rotating rod 18 is rotatably connected inside the multiple sleeve rods 17. The rotating rod 18 drives the bearing block 19 to rotate, which in turn drives the locking claw 21 to rotate. The rear end of the rotating rod 18 is fixedly connected to the bearing block 19. The bearing block 19 is rotatably connected to the inside of the sleeve rod 17. The bearing block 19 is fixedly connected to multiple support shafts 20 inside. The support shafts 20 are used to support the rotation of the locking claw 21. The locking claw 21 is rotatably connected to the outside of the multiple support shafts 20. The locking claw 21 is used to engage with the slot 23. Now, the folding headrest 14 can be installed or removed.

[0036] The external rotatable connection of the locking claw 21 is connected to the inside of the sleeve rod 17. Multiple springs 22 are fixedly connected inside the bearing block 19. The springs 22 provide elastic force to make the locking claw 21 engage. The other end of the spring 22 is fixedly connected to the external side of the locking claw 21. Multiple slots 23 are opened inside the backrest 2. The external slidable connection of the sleeve rod 17 is connected to the inside of the slot 23. The external of the locking claw 21 abuts against the inside of the slot 23. The front end of the rotating rod 28 is fixedly connected to the rotating block 24. The rotating block 24 facilitates the user to operate the rotating rod 28.

[0037] Working principle: When the folding headrest 14 needs to be adjusted, first pull the lever 12. The lever 12 drives the eccentric pressure block 11 to rotate. The eccentric pressure block 11 rotates and squeezes the rotating plate 6 on the right side, so that the rotating plate 6 on the right side rotates around the support rod 5 as the axis, which in turn drives the toothed plate 8 fixedly connected to it to rotate. Since the two toothed plates 8 are respectively engaged with the toothed plates 10 on both sides of the transmission block 9, the rotation of the toothed plate 8 drives the toothed plate 10 to move. The toothed plate 10 drives the transmission block 9 to slide on the rotating rod 7. The support block 13 fixed on the front side of the transmission block 9 moves together with the transmission block 9, which in turn drives the folding headrest 14 to adjust the up and down angle, and then the headrest position can be adjusted.

[0038] When the folding headrest 14 needs to be installed, insert the sleeve rod 17 into the slot 23, then rotate the rotating block 24, which will drive the rotating rod 18 to rotate. The bearing block 19 at the rear end of the rotating rod 18 will rotate accordingly. After the bearing block 19 rotates, the spring 22 inside the bearing block 19 pushes the locking claw 21 to rotate around the support shaft 20, so that the locking claw 21 is engaged in the slot 23, connecting the mounting plate 3 and the backrest 2, thereby realizing the installation of the folding headrest 14.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A folding headrest support mechanism for a single person sofa comprising a sofa (1) and a folding headrest (14), characterised in that: The rear end of the sofa (1) is fixedly connected with a backrest (2), the outer front end of the backrest (2) is fixedly connected with a mounting plate (3), the left and right sides of the front end of the mounting plate (3) are fixedly connected with a link block (4), the inner part of the link block (4) is fixedly connected with a support rod (5), the outer part of the support rod (5) is rotatably connected with a rotating plate (6), the inner part of the rotating plate (6) is slidably connected with a rotating rod (7), the proximal side of the two rotating plates (6) is fixedly connected with a gear slot plate (8), the outer part of the rotating rod (7) is rotatably connected with a transmission block (9), the left and right sides of the transmission block (9) are fixedly connected with a gear trace plate (10), the outer right side of the rotating rod (7) is rotatably connected with an eccentric pressing block (11), the outer side of the eccentric pressing block (11) is fixedly connected with a pull rod (12), the front side of the transmission block (9) is fixedly connected with a support block (13), the front end of the support block (13) is fixedly connected with a folding headrest (14), the inner part of the support block (13) is threadedly connected with a threaded assembly for fixing.

2. The folding headrest support mechanism for a single-person sofa according to claim 1, characterized in that: The threaded assembly comprises a bolt (15), the outer part of the bolt (15) is threadedly connected in the inner part of the support block (13), and the outer part of the bolt (15) is threadedly connected with a nut (16).

3. The folding headrest support mechanism for a single-person sofa according to claim 1, characterized in that: The inner part of the mounting plate (3) is fixedly connected with a plurality of sleeve rods (17), the inner part of the plurality of sleeve rods (17) is rotatably connected with a rotating rod (18), the rear end of the rotating rod (18) is fixedly connected with a bearing block (19), the inner part of the bearing block (19) is fixedly connected with a plurality of support shafts (20), the outer part of the plurality of support shafts (20) is rotatably connected with a clamping claw (21), the inner part of the bearing block (19) is fixedly connected with a plurality of springs (22), and the inner part of the backrest (2) is provided with a plurality of clamping grooves (23).

4. The folding headrest support mechanism for a single-occupant sofa of claim 1, wherein: The outer part of the two gear slot plates (8) is meshedly connected with the gear trace plate (10), and the outer part of the eccentric pressing block (11) abuts against the outer part of the right rotating plate (6).

5. The folding headrest support mechanism for a single-occupant sofa of claim 2, wherein: The outer part of the bolt (15) is threadedly connected in the inner front end of the transmission block (9), and the outer part of the nut (16) is in contact with the outer part of the support block (13).

6. The folding headrest support mechanism for a single-occupant sofa of claim 3, wherein: The outer part of the sleeve rod (17) is slidably connected in the inner part of the clamping groove (23), and the outer part of the bearing block (19) is rotatably connected in the inner part of the sleeve rod (17).

7. The folding headrest support mechanism for a single-occupant sofa of claim 3, wherein: The outer part of the clamping claw (21) is rotatably connected in the inner part of the sleeve rod (17), and the other end of the spring (22) is fixedly connected to one side of the outer part of the clamping claw (21).

8. The folding headrest support mechanism for a single-occupant sofa of claim 3, wherein: The outer part of the clamping claw (21) abuts against the inner part of the clamping groove (23), and the front end of the rotating rod (18) is fixedly connected with a rotating block (24).

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