Seat headrest

Abstract

The utility model discloses a seat headrest which is characterized in that the seat headrest comprises a headrest frame, a headrest swing arm and a headrest lifting adjusting assembly, the headrest lifting adjusting assembly is installed on a backrest, one end of the headrest swing arm is hinged to the headrest frame, and the other end of the headrest swing arm is rotationally connected with the headrest lifting adjusting assembly; a positioning end is arranged at the end of the headrest swing arm, an angle adjusting positioning assembly and a rotating shaft are arranged in the positioning end, the rotating shaft is connected with the headrest lifting adjusting assembly, the angle adjusting positioning assembly comprises an arc plate movably arranged on the inner wall of the positioning end, and a first wavy face and a corresponding first convex rib are arranged between the rotating shaft and the arc plate. And the rotating angle of the rotating shaft can be limited through the cooperation of the first convex ribs and the first wavy surfaces. The device is good in stability and convenient to operate and adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, and more specifically to a seat headrest. Background Art

[0002] Existing seat headrests are usually used as seat accessories and are fixed to the seat. The size specifications of the same office chair are often fixed, but the same type of office chair may be aimed at users of different heights and body shapes, especially it is difficult to provide good support for the head, which reduces the user experience. To this end, those skilled in the art have also made some improvements. For example, the Chinese patent authorization announcement number is CN220236457 U, which discloses a T-support system for an ergonomic chair, including a headrest assembly, a seat back assembly, a lumbar support assembly, and an armrest assembly; the headrest assembly is installed on the top of the seat back assembly, and the headrest assembly is used to support the head; the seat back assembly is used to support the back; the lumbar support assembly is installed on the seat back assembly near the middle, and the lumbar support assembly is used to support the waist; one end of the armrest assembly is fixedly connected to the seat back assembly, and the armrest assembly is used to support the elbow; the headrest assembly, lumbar support assembly, and armrest assembly can all adjust their own positions and angles; the seat back assembly can adjust its own position; the headrest assembly includes a headrest and a headrest adjustment device; one end of the headrest adjustment device is connected to the headrest, and the other end of the headrest adjustment device is connected to the seat back assembly; the headrest adjustment device can adjust the headrest in four dimensions: up and down, front and back, and dual-axis rotation. This patent mechanism adds adjustment functions to the headrest, backrest, lumbar support and armrests of the office chair, allowing users to adjust the comfort level according to their own height and body shape during use, effectively solving the pain point that existing office chairs cannot fully adapt to users of different heights and body shapes. However, the disadvantage is that in the headrest adjustment device, the front and rear brackets are mainly used to adjust the front and rear of the headrest, but cannot change the tilt angle of the headrest. Therefore, it is necessary to further improve the existing technology. Summary of the invention

[0003] The utility model aims to solve the deficiencies of the prior art and provide a seat headrest which is stable, reliable and easy to adjust and use.

[0004] The utility model adopts the following technical solutions to achieve the above-mentioned purpose: a seat headrest, characterized in that it includes a headrest frame, a headrest swing arm, and a headrest lifting and adjusting component, the headrest lifting and adjusting component is installed on the backrest, one end of the headrest swing arm is hinged to the headrest frame, and the other end is rotatably connected to the headrest lifting and adjusting component.

[0005] A positioning terminal is provided at the end of the headrest swing arm, and an angle adjustment positioning component and a rotating shaft are provided inside the positioning terminal. The rotating shaft is connected to the headrest lifting and adjusting component. The angle adjustment positioning component includes an arc plate movably provided on the inner wall of the positioning terminal, and a first wave surface and a corresponding first convex rib are provided between the rotating shaft and the arc plate. The cooperation between the first convex rib and the first wave surface can limit the rotation angle of the rotating shaft.

[0006] As a further explanation of the above scheme, the headrest lifting adjustment assembly includes a headrest lifting adjustment rod and an adjustment rod sleeve. The headrest lifting adjustment rod is movably inserted into the adjustment rod sleeve. A plurality of positioning hole grooves are arranged along the extension and retraction direction of the headrest lifting adjustment rod, and corresponding marbles are arranged in the adjustment rod sleeve.

[0007] Furthermore, the outer cover of the headrest lifting adjustment rod is provided with a transverse handle, the transverse handle is provided with hooks on both sides extending toward the backrest, and the backrest is provided with recesses corresponding to the hooks.

[0008] Furthermore, the hinged end of the headrest swing arm and the headrest frame is provided with a connecting end, the headrest frame is provided with a recessed position corresponding to the connecting end, an arc-shaped pad is embedded in the recessed position, the arc-shaped pad has a second wavy surface, and the connecting end is provided with a second convex rib corresponding to the second wavy surface.

[0009] Furthermore, the back of the arc-shaped pad is provided with at least two convex ribs extending outward, and the concave position is provided with a groove in which the convex ribs match the concave-convex grooves.

[0010] Furthermore, the positioning end includes two side rings distributed on the left and right, with a gap between the two side rings, and a cylindrical end is provided at the end of the headrest lifting adjustment rod, and the two side rings are respectively arranged on both sides of the cylindrical end.

[0011] Furthermore, the inner wall of the ring is provided with a groove for mounting the arc plate, the arc plate is engaged with the groove, and the end of the rotating shaft is provided with a positioning protrusion, which is movably engaged with the end of the groove.

[0012] The beneficial effects that can be achieved by the utility model by adopting the above technical solution are:

[0013] The utility model adopts a seat headrest structure which is mainly composed of a headrest frame, a headrest swing arm and a headrest lifting and adjusting component. The headrest lifting and adjusting component is installed on a backrest, one end of the headrest swing arm is hinged to the headrest frame, and the other end is rotatably connected to the headrest lifting and adjusting component. A positioning terminal is arranged at the end of the headrest swing arm, and an angle adjustment positioning component and a rotating shaft are arranged in the positioning terminal. The rotating shaft is connected to the headrest lifting and adjusting component. The angle adjustment positioning component includes an arc plate movably arranged on the inner wall of the positioning terminal, and a first wave surface and a corresponding first convex rib are arranged between the rotating shaft and the arc plate. Through the cooperation of the first convex rib and the first wave surface, the rotation angle of the rotating shaft can be limited, so that the headrest frame can not only be lifted and adjusted, but also can be rotated and adjusted within a certain angle range, so as to meet the use requirements and improve the comfort of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a schematic diagram of the connection structure between the headrest swing arm and the headrest lifting and adjusting assembly of the utility model.

[0016] Figure 3 It is a schematic diagram of the structure of the headrest swing arm and the headrest lifting and adjusting assembly.

[0017] Figure 4 It is a schematic diagram of the headrest swing arm structure.

[0018] Figure 5 Schematic diagram of the connection structure between the rotating shaft and the arc plate.

[0019] Explanation of the accompanying drawings: 1, headrest frame 2, headrest swing arm 2-1, positioning end 2-11, slot 2-2, angle adjustment positioning assembly 2-21, arc plate 2-22, first wave surface 2-23, first convex rib 2-3, rotating shaft 2-31, positioning protrusion 3, headrest lifting adjustment assembly 3-1, headrest lifting adjustment rod 3-11, positioning hole slot 3-12, cylindrical end 3-2, adjustment rod sleeve 4, backrest 5, horizontal handle 5-1, hook 6, arc pad 6-1, second wave surface 6-2, convex rib. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0021] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, "at least" means one or more, unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise specified and limited, the terms "assembly", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the utility model, unless otherwise specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "below" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the height of the second feature. A first feature being "above", "below" and "below" a second feature includes that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the second feature.

[0024] The following is a further description of the specific implementation of the utility model in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the utility model are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the utility model, and cannot be understood as limiting the utility model.

[0025] like Figure 1-Figure 5As shown, the utility model is a seat headrest, including a headrest frame 1, a headrest swing arm 2, and a headrest lifting and adjusting assembly 3. In order to improve comfort, the headrest frame 1 is generally equipped with a headrest cushion. The headrest lifting and adjusting assembly 3 is installed on the backrest 4. The headrest lifting and adjusting assembly 3 includes a headrest lifting and adjusting rod 3-1 and an adjusting rod sleeve 3-2. The adjusting rod sleeve 3-2 is fixed on the backrest 4. The headrest lifting and adjusting rod 3-1 is movably plugged into the adjusting rod sleeve 3-2. A plurality of positioning holes 3-11 are provided along the telescopic direction of the headrest lifting and adjusting rod 3-1, and corresponding marbles are provided in the adjusting rod sleeve 3-2. The outer cover of the headrest lifting and adjusting rod is provided with a transverse handle 5, and the transverse handle is provided with two side hooks 5-1 extending toward the backrest. The backrest is provided with a recess corresponding to the hooks, so that the two can be firmly fixed as one.

[0026] The headrest swing arm 2 is in an arc shape as a whole, one end of the headrest swing arm 2 is hinged to the headrest frame 1, and the other end is rotatably connected to the headrest lifting adjustment component 3. A positioning terminal 2-1 is provided at the end of the headrest swing arm 2, and an angle adjustment positioning component 2-2 and a rotating shaft 2-3 are provided in the positioning terminal 2-1, and the rotating shaft is connected to the headrest lifting adjustment component. The positioning terminal 2-2 includes two side rings distributed on the left and right, and there is a gap between the two side rings. A columnar terminal 3-12 is provided at the end of the headrest lifting adjustment rod 3-1, and the two side rings are respectively arranged on both sides of the columnar terminal.

[0027] The angle adjustment positioning assembly 2-2 includes an arc plate 2-21 movably arranged on the inner wall of the positioning end head, and a first wave surface 2-22 and a corresponding first convex rib 2-23 are arranged between the rotating shaft 2-3 and the arc plate 2-21. The first convex rib cooperates with the first wave surface to limit the rotation angle of the rotating shaft. The inner wall of the ring is provided with a slot 2-11 for mounting the arc plate, and the arc plate is engaged with the slot. A positioning convex block 2-31 is arranged at the end of the rotating shaft, and the positioning convex block is movably engaged with the end of the slot.

[0028] The hinged end of the headrest swing arm 2 and the headrest frame is provided with a connecting end 2-3, the headrest frame is provided with a concave position corresponding to the connecting end, an arc-shaped pad 6 is embedded in the concave position, the arc-shaped pad has a second wave surface 6-1, and the connecting end is provided with a second convex rib corresponding to the second wave surface. The back of the arc-shaped pad is provided with at least two convex ribs 6-2 extending outward, and the concave position is provided with a groove in which the convex ribs match the concave-convex groove.

[0029] Compared with the prior art, the utility model adopts a headrest swing arm arranged between the headrest frame and the headrest lifting and adjusting component, so that the headrest frame can rotate relative to the headrest swing arm, and the headrest swing arm can also swing relative to the headrest lifting and adjusting component. The angle is adjustable and lockable, the operation is convenient, and the user needs can be met.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A seat headrest, It is characterized in that It includes a headrest frame, a headrest swing arm, and a headrest lifting and adjusting component. The headrest lifting and adjusting component is installed on the backrest. One end of the headrest swing arm is hinged to the headrest frame, and the other end is rotatably connected to the headrest lifting and adjusting component. The end of the headrest swing arm is provided with a positioning end head, an angle adjustment positioning assembly and a rotating shaft are provided in the positioning end head, the rotating shaft is connected to the headrest lifting adjustment assembly, the angle adjustment positioning assembly includes an arc plate movably provided on the inner wall of the positioning end head, and a first wave surface and a corresponding first convex rib are provided between the rotating shaft and the arc plate; The hinged end of the headrest swing arm and the headrest frame is provided with a connecting end, the headrest frame is provided with a recessed position corresponding to the connecting end, an arc-shaped pad is embedded in the recessed position, the arc-shaped pad has a second wave surface, and the connecting end is provided with a second convex rib corresponding to the second wave surface; at least two convex ribs extending outward are provided on the back of the arc-shaped pad, and the recessed position is provided with a groove in which the convex ribs match each other.

2. A seat headrest according to claim 1, It is characterized in that The headrest lifting adjustment component includes a headrest lifting adjustment rod and an adjustment rod sleeve. The headrest lifting adjustment rod is movably plugged into the adjustment rod sleeve. A plurality of positioning hole grooves are arranged along the extension and retraction direction of the headrest lifting adjustment rod, and corresponding marbles are arranged in the adjustment rod sleeve.

3. A seat headrest according to claim 2, It is characterized in that The outer cover of the headrest lifting adjustment rod is provided with a transverse handle, the transverse handle is provided with buckle hooks on both sides extending toward the backrest, and the backrest is provided with recessed positions corresponding to the buckle hooks.

4. A seat headrest according to claim 1, It is characterized in that The positioning end includes two side rings distributed on the left and right, with a gap between the two side rings. The end of the headrest lifting adjustment rod is provided with a columnar end, and the two side rings are respectively arranged on both sides of the columnar end.

5. A seat headrest according to claim 4, It is characterized in that The inner wall of the ring is provided with a slot for assembling the arc plate, the arc plate is engaged with the slot, and a positioning convex block is provided at the end of the rotating shaft, and the positioning convex block is movably engaged with the end of the slot.

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