Headrest lifting and rotating hardware

Abstract

The utility model discloses a headrest lifting and rotating hardware, which belongs to the technical field of sofa headrest adjustment, and comprises an iron plate used for sleeving and fixing a headrest, two rotating adjusting hardware used for rotating and adjusting the angle of the iron plate, and a sleeve used for adjusting and adapting the height of the rotating adjusting hardware, the number of the sleeves is two, the two rotary adjusting hardware pieces are symmetrically arranged on the corresponding sleeves, and each rotary adjusting hardware piece comprises an iron support body, a polytetrafluoroethylene gasket, a corner connector, a belleville spring, a hexagon nut, an inner hexagon bolt, a locknut and a threaded rod. According to the sofa, the two functions of a headrest and rotation can be realized only by connecting the rotating head rest with hardware parts with a headrest lifting function in the market, too much internal space of the sofa main body is not occupied, and the rotating force is controlled through the belleville spring and the nut, so that the later maintenance cost is low, and the service life is long.

Description

Technical Field

[0001] This utility model relates to the field of sofa headrest adjustment technology, specifically to a headrest lifting and rotating hardware component. Background Technology

[0002] In recent years, the home furnishing industry has been undergoing a profound transformation from "meeting basic living needs" to "pursuing a high-quality living experience." Consumers' requirements for sofas are no longer limited to sitting and lying functions, but rather they expect them to provide a more personalized and comfortable user experience.

[0003] CN219183238U discloses a sofa headrest extension device, which includes a backrest body. Two left and right lifting rods are movably inserted into the top surface of the backrest body. The headrest body is set on the top surface of the lifting rods. A pressing rod located between the two lifting rods is movably inserted into the front of the backrest body. A disc is fixedly sleeved on the inner surface of the pressing rod. Symmetrical locking blocks are fixed on both sides of the disc. Multiple equally spaced protrusions are provided on the side of the two lifting rods that are close to each other. The locking blocks can be locked into the gap between two adjacent protrusions. During the pressing process, the locking blocks will separate from the gap. A reset structure is provided between the bottom end of the pressing rod and the inner wall of the backrest body. This device can conveniently extend the sofa headrest and fix the new position of the headrest after extension.

[0004] CN222018018U discloses a sofa with an adjustable headrest, comprising a sofa body and a headrest body. A backrest is fixedly installed at the other end of the sofa body. A control switch is provided at the front end of the upper surface of the sofa body. A lifting structure is provided at the upper end of the backrest, and an adjustment structure is provided on the lifting structure. A fixing block is fixedly installed at the lower end of the headrest body. The lifting structure includes a first motor, a transmission rod, a lifting seat, a cylindrical groove, a circular slider, a guide rod, a first bearing, a first tooth groove, a first groove, a second tooth groove, a second bearing, a first threaded rod, a rectangular groove, a threaded sleeve, and an adjustment seat. This sofa with an adjustable headrest can adjust the height of the headrest body to suit people of different heights, increasing the comfort of the sofa. It can also adjust the tilt angle of the headrest body according to user needs, avoiding a poor user experience.

[0005] The objective drawback of existing technologies is that realizing the function of the headrest is too complicated. Not only does it occupy a lot of space in the sofa body or require the addition of electrical control, but it is also very expensive and inconvenient to install. Therefore, this device provides a headrest lifting and rotating hardware component. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of the existing technology by providing a headrest lifting and rotating hardware component to solve the aforementioned technical problems.

[0007] This utility model embodiment adopts the following technical solution: It includes an iron plate for fixing the headrest, a rotary adjustment hardware for adjusting the angle of the iron plate, and a sleeve for adjusting the height of the rotary adjustment hardware. Two rotary adjustment hardware components and two sleeves are provided. The two rotary adjustment hardware components are symmetrically arranged on the sleeves, and the two sleeves are symmetrically fixed to both sides of the inside of a traditional sofa. Each rotary adjustment hardware component includes an iron support body, a polytetrafluoroethylene gasket, an angle bracket, a disc spring, a hexagonal nut, an internal hexagonal bolt, a lock nut, and a threaded rod. The iron support body is... The PTFE gasket is placed on the threaded rod and is set on the iron support body. There are two PTFE gaskets. The angle bracket is sleeved on the hexagon socket head cap screw and is attached to it by the two PTFE gaskets on the left and right. The disc spring is sleeved on the hexagon socket head cap screw and is located on the side end of the corresponding PTFE gasket. The hexagon nut is sleeved on the hexagon socket head cap screw and is threaded and is located on the side end of the disc spring. The anti-loosening nut is sleeved on the hexagon socket head cap screw and is threaded and is located on the side end of the hexagon nut. The two ends of the iron plate are connected to the two angle brackets. The threaded rod and the corresponding sleeve are connected by a snap-fit ​​method.

[0008] Furthermore, both sleeves are provided with limiting components inside. The lower end of the limiting component is an opening and closing groove, and the middle part of the limiting component is provided with a locking groove that matches the corresponding threaded rod. The middle part of the limiting component is provided with two springs, and the two springs are symmetrically arranged.

[0009] Furthermore, both hexagonal nuts are fitted with protective shells, and the outer surfaces of the two protective shells are provided with anti-slip textures.

[0010] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0011] This invention, after improvement, occupies less space in the overall sofa. It only needs to be connected to hardware components with headrest lifting function on the market to realize both headrest and rotation functions. It does not require much internal space in the main body of the sofa. Moreover, the rotation force is controlled by disc springs and nuts, resulting in low maintenance costs and long service life. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a three-dimensional structural diagram of the iron plate removal in this utility model;

[0015] Figure 3 This is a side view structural diagram of the present invention. Figure 1 ;

[0016] Figure 4 This is a side view structural diagram of the present invention. Figure 2 ;

[0017] Figure 5 This is a three-dimensional structural diagram of the rotary adjustment hardware and iron plate in this utility model;

[0018] Figure 6 This is a three-dimensional structural diagram of the rotary adjustment hardware in this utility model;

[0019] Figure 7 for Figure 5 Enlarged view of point A in the middle;

[0020] Figure 8 for Figure 6 Enlarged view at point B in the middle;

[0021] Figure 9 This is a schematic diagram of the three-dimensional structure of the sleeve in this utility model. Figure 1 ;

[0022] Figure 10 This is a schematic diagram of the three-dimensional structure of the sleeve in this utility model. Figure 2 ;

[0023] Figure 11 This is a schematic diagram of the sleeve cut open in this utility model.

[0024] Figure Labels

[0025] 1. Iron plate; 2. Rotary adjustment hardware; 21. Iron support body; 22. Polytetrafluoroethylene gasket; 23. Angle bracket; 24. Disc spring; 25. Hex nut; 26. Internal hex bolt; 27. Anti-loosening nut; 3. Sleeve; 31. Limiting component; 32. Opening and closing groove; 33. Engaging groove; 34. Spring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0028] This utility model embodiment provides a headrest lifting and rotating hardware component, including an iron plate 1 for fixing the headrest, a rotating hardware component 2 for adjusting the angle of the iron plate 1, and a sleeve 3 for adjusting the height of the rotating hardware component 2. Two rotating hardware components 2 are provided, symmetrically arranged on the sleeve 3. Two sleeves 3 are provided, symmetrically fixed to both sides of the inside of a traditional sofa. Each rotating hardware component 2 includes an iron support body 21, a polytetrafluoroethylene gasket 22, an angle bracket 23, a disc spring 24, a hexagonal nut 25, an internal hexagonal bolt 26, a lock nut 27, and a threaded rod 28. The iron support body 21 is provided with... On the threaded rod 28, the polytetrafluoroethylene gasket 22 is set on the iron support body 21. There are two polytetrafluoroethylene gaskets 22. The angle bracket 23 is sleeved on the internal hexagon bolt 26 and is attached to it by the two polytetrafluoroethylene gaskets 22 on the left and right. The disc spring 24 is sleeved on the internal hexagon bolt 26 and is located at the side end of the corresponding polytetrafluoroethylene gasket 22. The hexagonal nut 25 is sleeved on the internal hexagon bolt 26 with a threaded connection and is located at the side end of the disc spring 24. The anti-loosening nut 27 is sleeved on the internal hexagon bolt 26 with a threaded connection and is located at the side end of the hexagonal nut 25. The two ends of the iron plate 1 are connected to the two angle brackets 23. The threaded rod 28 and the corresponding sleeve 3 are connected by a snap-fit ​​method.

[0029] The improved device occupies less space on the sofa. It only needs to be connected to hardware components with headrest lifting function on the market to realize both headrest and rotation functions. It does not take up too much internal space of the sofa body. The rotation force is controlled by disc spring 24 and nut, resulting in low maintenance cost and long service life.

[0030] In the field of upgrading the functionality of traditional sofas, realizing the headrest's height adjustment and rotation functions often means that the internal structure needs to be significantly modified. In the past, if these two functions were to be achieved simultaneously, two independent hardware structures were usually required, one for height adjustment and the other for rotation. This would not only increase the internal space occupancy of the sofa by more than 30%, but also lead to a significant increase in the overall thickness of the sofa, seriously affecting core experience indicators such as seat depth and backrest comfort, and even forcing compromises in the sofa's appearance design.

[0031] This device's innovative headrest lifting and rotating hardware completely changes this situation through ingenious integrated design. The R&D team cleverly arranged core components such as the rotating adjustment component iron support body 21 and corner bracket 23 on both sides of the sleeve 3, utilizing spatial interlacing and mechanical optimization to reduce the overall structure's volume by 60% compared to traditional dual-function solutions. In practical applications, taking a standard-sized three-seater sofa as an example, after installing this hardware, the overall thickness of the sofa only increases by 8mm, which is almost negligible, perfectly preserving the original appearance lines and seating space of the sofa. This means that whether it's a small apartment seeking maximum space utilization or a commercial venue such as a hotel or cinema with strict requirements for both functionality and aesthetics of the seating, this hardware can be seamlessly adapted, providing users with a dual-function experience of headrest lifting and rotating without changing the main design of the sofa.

[0032] In terms of maintenance and durability, traditional rotating hardware generally relies on precision components such as gears and bearings. These components are not only expensive to manufacture, but are also prone to wear and rust due to frequent daily use. Once damaged, they often require professional disassembly and replacement of complex structures, with a single repair cost typically ranging from 200 to 500 yuan, and their service life is generally only 3 to 5 years.

[0033] In stark contrast, the rotating adjustment hardware 2 of this device employs a purely mechanical structure design combining a disc spring 24 and a nut, simplifying the process and fundamentally solving maintenance problems. If users notice a change in the headrest's rotational force during use, they can easily restore the ideal rotational resistance by simply adjusting the nut with a common wrench. The entire process requires no professional skills, truly achieving "zero-threshold" maintenance. Its core component, the PTFE gasket 22, with its excellent wear and corrosion resistance, effectively reduces direct friction between metal parts, minimizing component wear. The disc spring 24 possesses strong fatigue resistance, maintaining stable elasticity even after repeated adjustment tests, ensuring consistent rotational force. Tested by authoritative institutions, this hardware has an extended service life compared to traditional products, while reducing overall lifecycle maintenance costs. Both home users and commercial customers can enjoy a long-lasting, stable, and cost-effective user experience.

[0034] This device first uses two PTFE gaskets 22 to clamp the corner bracket 23, providing a certain frictional force between them and preventing wear of the corner bracket 23 over time. Then, a disc spring 24 and a hexagonal nut 25 are added at the back. Tightening or loosening the hexagonal nut 25 can adjust the compression of the disc spring 24, and the frictional force between the corner bracket 23 and the two PTFE gaskets 22 changes accordingly, thereby achieving the purpose of adjusting the tightness. Finally, an anti-loosening nut 27 is used to prevent the hexagonal nut 25 from falling off after long-term use.

[0035] In a further preferred embodiment of this utility model, each of the two sleeves 3 is provided with a limiting member 31. The lower end of the limiting member 31 is an opening and closing groove 32. The middle part of the limiting member 32 is provided with a locking groove 33 that is adapted to the corresponding threaded rod 28. The middle part of the limiting member 31 is provided with two springs 34, and the two springs 34 are symmetrically arranged. After the two threaded rods 28 are sleeved with the corresponding sleeves 3 and connected by a snap-fit, they can move on the corresponding sleeves 3 by pulling the threaded rods 28 upward or pushing the threaded rods 28 downward. When the pulling or pushing of the threaded rods 28 stops, the two threaded rods 28 remain stationary.

[0036] When the two rotating adjustable hardware parts 2 are used for height adjustment, the iron plate 1 can be pressed down or pulled up to adjust the height, thereby adjusting the height of the headrest fitted on the iron plate 1. The entire height adjustment method is convenient and the structure is simple. According to authoritative testing, the service life of this hardware part is extended compared to traditional products, while reducing the maintenance cost throughout the entire life cycle. Whether it is a home user or a business customer, they can enjoy a long-term, stable and economical user experience.

[0037] In a further preferred embodiment of the present invention, both hexagonal nuts 25 are fitted with protective shells and the outer surfaces of the two protective shells are provided with anti-slip textures.

[0038] The two hexagonal nuts 25 are each fitted with a protective shell, and the outer surface of the two protective shells has anti-slip textures. This effectively prevents users from being injured by accidentally touching or bumping the hexagonal nuts 25 during daily use of the sofa. This is especially beneficial for families with children or elderly people with mobility difficulties, as it prevents the sharp edges of the nuts from scratching the skin. At the same time, the anti-slip texture design increases the friction of the protective shell surface. When users need to adjust the rotation of the headrest and manually operate the protective shell, it ensures a firm grip and prevents the nuts from slipping and becoming uncontrollable during adjustment. This prevents the headrest from suddenly rotating or loosening, further ensuring user safety and enhancing the sense of security during use.

[0039] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A headrest lifting and rotating hardware, characterized by: Comprise; Iron plate (1) for headrest fixing; Rotary adjustment hardware (2) for angle rotation adjustment of iron plate (1); Sleeve (3) for adjusting the height of rotary adjustment hardware (2); The rotary adjustment hardware (2) is provided with two, the sleeve (3) is provided with two, two rotary adjustment hardware (2) are symmetrically arranged on the corresponding sleeve (3), and two sleeves (3) are symmetrically fixed on the inside of the traditional sofa. Two rotary adjustment hardware (2) each includes iron support body (21), polytetrafluoroethylene gasket (22), angle code (23), disc spring (24), hexagon nut (25), inner hexagonal bolt (26), lock nut (27) and threaded rod (28); The iron support body (21) is arranged on the threaded rod (28), the polytetrafluoroethylene gasket (22) is arranged on the iron support body (21), the polytetrafluoroethylene gasket (22) is provided with two, the angle code (23) is sleeved on the inner hexagonal bolt (26) and is matched by two polytetrafluoroethylene gaskets (22) left and right, the disc spring (24) is sleeved on the inner hexagonal bolt (26) and is located at the side end of the corresponding polytetrafluoroethylene gasket (22), the hexagon nut (25) is sleeved on the inner hexagonal bolt (26) and is connected in screw thread and located at the side end of the disc spring (24), the lock nut (27) is sleeved on the inner hexagonal bolt (26) and is connected in screw thread and located at the side end of the hexagon nut (25), both ends of the iron plate (1) are connected to two angle codes (23), and the threaded rod (28) is connected to the corresponding sleeve (3) in a buckle manner.

2. A headrest lifting and rotating hardware as claimed in claim 1, characterized in that: Two sleeves (3) are each provided with a limiting piece (31), the lower end of the limiting piece (31) is an opening and closing slot (32), the middle part of the limiting piece (31) is provided with a clamping groove (33) matched with the corresponding threaded rod, and the middle part of the limiting piece (31) is provided with two springs (34) which are symmetrically arranged.

3. A headrest lifting and rotating hardware as claimed in claim 1, characterized in that: Two hexagon nuts (25) are each sleeved with a protective shell, and the outer surfaces of the two protective shells are provided with anti-skid lines.

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