Backrest structure capable of being additionally provided with adjustable headrest

Abstract

The backrest structure comprises a backrest cushion, an adjusting plate is arranged on the back of the backrest cushion, a through opening is formed in the adjusting plate, a lifting plate is connected into the through opening in a sliding mode, a sliding groove is formed in the right side wall of the adjusting plate, and a headrest is arranged in the sliding groove. A connecting rod is fixedly connected to the right side of the lifting plate, threads are arranged on the surface of the connecting rod, a limiting ring is movably connected to the surface of the connecting rod through the threads, the limiting ring is attached to the adjusting plate, and a supporting pillow is arranged on the front face of the lifting plate. The adjusting plate is arranged, the supporting pillow is arranged at the top of the backrest cushion, the head of a person can be supported, then the limiting ring is rotated through the threads, the limiting ring can slide on the surface of the connecting rod and leave the surface of the adjusting plate, then the connecting rod is pulled upwards, and the head of the person can be adjusted. Meanwhile, the connecting rod drives the lifting plate to slide in the adjusting plate.

Description

Technical Field

[0001] The utility model relates to the technical field of backrests, in particular to a backrest structure capable of being additionally equipped with an adjustable headrest. Background Art

[0002] As people's quality of life continues to improve, their living habits are also changing. Whether they are browsing the internet at home, driving on the road, or working in the office, they all sit in a chair. Sitting for long periods of time puts a heavy strain on the waist and back. Over time, lumbar strain can occur, leading to irreparable diseases and pain. Therefore, backrest products have been developed to alleviate fatigue and lumbar diseases caused by sitting.

[0003] For example, Chinese Patent CN 215304363 U discloses a backrest height adjustment device. The present invention relates to a backrest height adjustment device comprising a back cushion assembly and a backboard. The backboard is provided with at least one guide rod, and the back cushion assembly is slidably connected to the guide rod. A locking mechanism is provided on the backboard or the back cushion assembly to prevent the back cushion assembly from sliding. The present invention provides a backrest height adjustment device that can adjust the backrest to a comfortable height that suits the user's back according to their body shape, with a simple structure and easy operation.

[0004] The background technology of the above patent points out that the existing backrest products cannot be adjusted in height according to the height of the person. Although the above patent can use guide rods and other devices to adjust the height of the backrest, when people need to rest when using the backrest, the head needs a support point. The existing backrest cannot support the head, which will reduce the comfort of the person. Utility Model Content

[0005] In order to solve the problems raised in the above-mentioned background technology, the purpose of the present invention is to provide a backrest structure that can be equipped with an adjustable headrest, which has the advantage of supporting the head and improving the comfort of the user, and solves the problem of reducing the comfort of the user due to the inability to support the head.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a backrest structure that can be equipped with an adjustable headrest, comprising a backrest cushion, an adjustment plate provided on the back of the backrest cushion, a through opening provided inside the adjustment plate, a lifting plate slidably connected to the inside of the through opening, a sliding groove provided on the right side wall of the adjustment plate, a connecting rod fixedly connected to the right side of the lifting plate, a thread provided on the surface of the connecting rod, a limiting ring movably connected to the surface of the connecting rod through the thread, the limiting ring is fitted with the adjustment plate, and a support pillow is provided on the front side of the lifting plate.

[0007] As a preferred embodiment of the present invention, the back of the support pillow is provided with Velcro 1, the back of the Velcro 1 is movably connected with Velcro 2, and the Velcro 2 is fixedly connected to the lifting plate.

[0008] As a preferred embodiment of the present invention, a notch is provided inside the support pillow, and a zipper is fixedly connected to the inside of the notch.

[0009] As a preferred embodiment of the present invention, a magnetic plate is provided on the left side of the lifting plate, a magnetic frame is movably connected to the surface of the magnetic plate, and the magnetic frame is fixedly connected to the adjustment plate.

[0010] As a preferred embodiment of the present invention, connecting plates are fixedly connected to the left and right sides of the adjustment plate, and the connecting plates are movably connected to the backrest cushion by screws.

[0011] As a preferred embodiment of the present invention, a through slot is provided on the back of the lifting plate, and a roller is movably connected inside the through slot.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. The utility model provides an adjustment plate and a support pillow on the top of the backrest cushion to support the head of the person. Then, the limit ring is rotated by a thread to make the limit ring slide on the surface of the connecting rod, so that the limit ring leaves the surface of the adjustment plate. Then, the connecting rod is pulled upward, and at the same time, the connecting rod drives the lifting plate to slide inside the adjustment plate, thereby adjusting the height of the support pillow to adapt to the heads of people of different heights and improve the comfort of the person.

[0014] 2. The utility model provides a Velcro 1, and through the mutual cooperation of Velcro 1 and Velcro 2, the support pillow has the advantage of convenient disassembly and assembly, so that personnel can replace the support pillow later. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a rear view schematic diagram of the backrest cushion of the utility model;

[0017] Figure 3 For this utility model Figure 2 A is an enlarged schematic diagram;

[0018] Figure 4 For this utility model Figure 1 A magnified schematic diagram of middle B;

[0019] Figure 5 This is a schematic diagram of the connection between the lifting plate, the through slot and the roller of the utility model;

[0020] Figure 6 This is a schematic diagram of the connection between the adjustment plate, the through port and the magnetic frame of the utility model;

[0021] Figure 7 It is a side view schematic diagram of the lifting plate of the utility model.

[0022] In the figure: 1. Backrest cushion; 2. Adjustment plate; 3. Through-hole; 4. Lifting plate; 5. Slide; 6. Connecting rod; 7. Thread; 8. Limiting ring; 9. Support pillow; 10. Velcro 1; 11. Velcro 2; 12. Notch; 13. Zipper; 14. Magnetic plate; 15. Magnetic frame; 16. Connecting plate; 17. Through-hole; 18. Roller. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1 to 7 As shown, a backrest structure that can be equipped with an adjustable headrest includes a backrest cushion 1, an adjustment plate 2 is provided on the back of the backrest cushion 1, a through opening 3 is opened inside the adjustment plate 2, a lifting plate 4 is slidably connected to the inside of the through opening 3, a sliding groove 5 is opened on the right side wall of the adjustment plate 2, a connecting rod 6 is fixedly connected to the right side of the lifting plate 4, a thread 7 is provided on the surface of the connecting rod 6, and a limiting ring 8 is movably connected to the surface of the connecting rod 6 through the thread 7, the limiting ring 8 is in contact with the adjustment plate 2, and a support pillow 9 is provided on the front of the lifting plate 4.

[0025] refer to Figure 4 The back of the support pillow 9 is provided with a Velcro 10 , and the back of the Velcro 10 is movably connected with a Velcro 2 11 , and the Velcro 2 11 is fixedly connected to the lifting plate 4 .

[0026] As a technical optimization solution of the present invention, by setting up Velcro 10 and cooperating with Velcro 10 and Velcro 2 11, the support pillow 9 has the advantage of convenient disassembly and assembly, so that personnel can replace the support pillow 9 later.

[0027] refer to Figure 1 A notch 12 is provided inside the support pillow 9 , and a zipper 13 is fixedly connected inside the notch 12 .

[0028] As a technical optimization solution of the present invention, by providing the notch 12 and the zipper 13, it is convenient for personnel to take out the velvet core inside the support pillow 9 at a later time, so as to facilitate personnel to replace the velvet core.

[0029] refer to Figure 5 A magnetic plate 14 is provided on the left side of the lifting plate 4 , and a magnetic frame 15 is movably connected to the surface of the magnetic plate 14 , and the magnetic frame 15 is fixedly connected to the adjustment plate 2 .

[0030] As a technical optimization solution of the present invention, by setting up a magnetic plate 14 and utilizing the principle of attraction between opposite poles, the magnetic plate 14 can be firmly adsorbed inside the magnetic frame 15, thereby improving the clamping effect of the lifting plate 4.

[0031] refer to Figure 2 The left and right sides of the adjustment plate 2 are fixedly connected with connecting plates 16, and the connecting plates 16 are movably connected to the backrest cushion 1 through screws.

[0032] As a technical optimization solution of the present invention, by providing a connecting plate 16, personnel can remove the screws later to disassemble the connecting plate 16, making it easier for personnel to disassemble and assemble it later.

[0033] refer to Figure 5 A through slot 17 is provided on the back of the lifting plate 4 , and a roller 18 is movably connected inside the through slot 17 .

[0034] As a technical optimization solution of the present invention, by providing the roller 18, when the lifting plate 4 slides, the roller 18 will slide inside the adjustment plate 2, which can improve the lifting flexibility of the lifting plate 4.

[0035] The working principle and usage process of the utility model: In daily use, the person installs or places the back cushion 1 to the designated position and then uses it. By setting a support pillow 9 on the top of the back cushion 1, the person's head can be supported. Then, the limit ring 8 is rotated by the thread 7, so that the limit ring 8 can slide on the surface of the connecting rod 6, so that the limit ring 8 leaves the surface of the adjustment plate 2, and then the connecting rod 6 is pulled upward. At the same time, the connecting rod 6 drives the lifting plate 4 to slide inside the adjustment plate 2, thereby adjusting the height of the support pillow 9 to adapt to the heads of people of different heights and improve the comfort of use for the people.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A backrest structure capable of being equipped with an adjustable headrest, comprising a backrest cushion (1), characterized in that: The back of the backrest cushion (1) is provided with an adjustment plate (2), the interior of the adjustment plate (2) is provided with a through opening (3), the interior of the through opening (3) is slidably connected to a lifting plate (4), the right side wall of the adjustment plate (2) is provided with a sliding groove (5), the right side of the lifting plate (4) is fixedly connected to a connecting rod (6), the surface of the connecting rod (6) is provided with a thread (7), the surface of the connecting rod (6) is movably connected to a limiting ring (8) through the thread (7), the limiting ring (8) is in contact with the adjustment plate (2), and the front of the lifting plate (4) is provided with a support pillow (9).

2. The backrest structure capable of being equipped with an adjustable headrest according to claim 1, characterized in that: The back of the support pillow (9) is provided with a first Velcro (10), the back of the first Velcro (10) is movably connected to a second Velcro (11), and the second Velcro (11) is fixedly connected to the lifting plate (4).

3. The backrest structure capable of being equipped with an adjustable headrest according to claim 1, characterized in that: A notch (12) is provided inside the support pillow (9), and a zipper (13) is fixedly connected inside the notch (12).

4. The backrest structure capable of being equipped with an adjustable headrest according to claim 1, characterized in that: A magnetic plate (14) is provided on the left side of the lifting plate (4), and a magnetic frame (15) is movably connected to the surface of the magnetic plate (14), and the magnetic frame (15) is fixedly connected to the adjustment plate (2).

5. The backrest structure capable of being equipped with an adjustable headrest according to claim 1, characterized in that: The left and right sides of the adjustment plate (2) are both fixedly connected with connecting plates (16), and the connecting plates (16) are movably connected to the backrest pad (1) via screws.

6. The backrest structure capable of being equipped with an adjustable headrest according to claim 1, characterized in that: A through slot (17) is provided on the back of the lifting plate (4), and a roller (18) is movably connected inside the through slot (17).

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