Seat backrest and seat with its

Abstract

This utility model discloses a seat back and a seat having the same. The seat back is used in a seat and includes a backrest body, a headrest, and a drive unit. The drive unit is located at the upper end of the backrest body and connected to the headrest, and is used to drive the headrest to move in a front-back direction. According to the seat back of this utility model, by placing the drive unit at the upper end of the backrest body and connecting it to the headrest, the drive unit can adjust the position of the headrest according to the user's needs. The headrest can be adjusted to a position that better fits the user's neck or head, allowing the headrest to better fit the user's neck or head in different sitting postures, thus meeting the usage needs of different users.

Description

Technical Field

[0001] This utility model mainly relates to the field of seating technology, and in particular to a seat back and a seat having the same. Background Technology

[0002] In existing technology, the headrest of the seat back can only rotate up and down, but cannot move forward and backward, resulting in poor support for the user's neck and head and a poor user experience. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a seat backrest that allows the headrest to be adjusted to better fit the user's neck or head, meeting the needs of different users.

[0004] This utility model also proposes a seat, which includes the aforementioned seat back.

[0005] According to an embodiment of the present utility model, a seat back is used for a seat and includes a backrest body, a headrest portion and a drive portion. The drive portion is disposed at the upper end of the backrest body and connected to the headrest portion, and is used to drive the headrest portion to move in the front-back direction.

[0006] According to the embodiment of the present utility model, the seat backrest has a drive unit located at the upper end of the backrest body and connected to the headrest. The drive unit can adjust the position of the headrest according to the user's needs, and can adjust the headrest to a position that fits the user's neck or head better. The headrest can fit the user's neck or head better in different sitting postures, thus meeting the different user needs.

[0007] In some embodiments of this utility model, the driving unit includes a driving box, a driving motor, a connecting bracket, and an adapter. The upper end of the driving box is open. The driving motor is located inside the driving box. The upper end of the connecting bracket extends from the open end of the driving box and is fixedly connected to the headrest. The adapter is used to convert the rotation of the output shaft of the driving motor into the forward and backward movement of the connecting bracket.

[0008] In some embodiments of this utility model, the driving part further includes a limiting plate, which is disposed at one end of the output shaft of the drive motor in the left-right direction near the connecting bracket. The limiting plate is provided with a limiting opening, which extends in the front-back direction, and at least a portion of the adapter passes through the limiting opening.

[0009] In some embodiments of this utility model, the connecting bracket and the adapter are connected by fasteners.

[0010] In some embodiments of this utility model, the driving part is rotatably connected to the backrest body, and the rotation axis of the driving part extends in the left-right direction.

[0011] In some embodiments of this utility model, the upper end of the backrest body is provided with a receiving space, and at least a portion of the drive unit is disposed within the receiving space.

[0012] In some embodiments of this utility model, the driving part has a first limit position when rotating forward and a second limit position when rotating backward. When the driving part is in the first limit position, the front sidewall of the accommodating space abuts against at least a portion of the driving part. When the driving part is in the second limit position, the rear sidewall of the accommodating space abuts against at least a portion of the driving part.

[0013] In some embodiments of this utility model, the seat back also includes a damper, which is disposed between the drive unit and the backrest body to prevent the drive unit from rotating.

[0014] In some embodiments of this utility model, the headrest includes a headrest body and a base. The base is located at the rear end of the headrest body and connected to the drive unit. The headrest body and the base are connected by fasteners.

[0015] The seat according to an embodiment of the present utility model includes a seat surface and a seat back as described above, wherein the backrest body is fixedly connected to the seat surface.

[0016] According to the embodiment of the present utility model, the seat has a drive unit located at the upper end of the backrest body and connected to the headrest. The drive unit can adjust the position of the headrest according to the user's needs, and can adjust the headrest to a position that fits the user's neck or head better. The headrest can fit the user's neck or head better in different sitting positions, thus meeting the usage needs of different users.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a side view of the headrest, drive unit, and damper according to an embodiment of the present utility model;

[0020] Figure 2 This is a cross-sectional view of the headrest, drive unit, and damper according to an embodiment of the present utility model;

[0021] Figure 3 This is a perspective view of the headrest portion, drive portion, and damper removal portion of the drive box according to an embodiment of the present utility model;

[0022] Figure 4 This is a cross-sectional view of the headrest, drive unit, and damper according to an embodiment of the present invention from another angle.

[0023] Figure label:

[0024] 1. Headrest area; 11. Headrest body; 12. Base;

[0025] 2. Drive unit; 21. Drive box; 22. Drive motor; 23. Connecting bracket; 24. Adapter; 241. Plate; 242. Spherical part; 25. Limiting plate; 251. Limiting port;

[0026] 3. Dampers. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The following is for reference. Figures 1-4 Describes a seat back according to an embodiment of the present utility model.

[0031] like Figure 1 As shown, the seat back according to an embodiment of the present utility model includes a backrest body, a headrest portion 1, and a drive portion 2.

[0032] Specifically, a seat back is used in a chair. Its main function is to support the user's back, reduce the burden on back muscles, and prevent back fatigue and pain caused by prolonged improper posture. It can guide users to maintain correct posture, such as ensuring the back is firmly against the seat back, avoiding excessive forward or backward leaning, thereby reducing health problems caused by improper posture and improving user comfort.

[0033] Furthermore, the design of the seat back takes ergonomic principles into account to ensure that it conforms to the curve of the user's back and provides optimal support.

[0034] The headrest 1 provides support for the user's neck and head, helping to relieve neck fatigue and discomfort caused by maintaining a fixed sitting posture for a long time. It can effectively support the neck, reduce pressure on the cervical spine, and provide the user with a proper head rest position.

[0035] Meanwhile, the headrest 1 helps users maintain the natural curve of their back, avoids back and shoulder tension caused by incorrect posture, and makes it more ergonomic, thereby reducing the physical burden caused by prolonged sitting.

[0036] like Figure 1 and Figure 2 As shown, the drive unit 2 is located at the upper end of the backrest body and connected to the headrest 1, and is used to drive the headrest 1 in the front-back direction (e.g., Figure 1 The headrest 1 can be moved in the forward and backward direction as shown, and its position can be adjusted according to the user's needs. The headrest 1 can be adjusted to fit the user's neck or head better under different sitting postures and body types, so as to meet the user's different usage needs.

[0037] According to the embodiment of the present utility model, the seat backrest has a drive unit 2 located at the upper end of the backrest body and connected to the headrest 1. The drive unit 2 can adjust the position of the headrest 1 according to the user's needs. The headrest 1 can be adjusted to a position that fits the user's neck or head better. The headrest 1 can fit the user's neck or head better in different sitting postures, thus meeting the different user needs.

[0038] In some embodiments of this utility model, such as Figure 2 , Figure 3 and Figure 4 As shown, the drive unit 2 includes a drive box 21, a drive motor 22, a connecting bracket 23, and an adapter 24. The upper end of the drive box 21 is open, and the drive motor 22 is housed inside the drive box 21. The drive box 21 protects the drive motor 22 and other components of the drive unit 2, preventing external forces from directly impacting the drive motor 22 and other components, thus protecting them to a certain extent and increasing the reliability of the drive unit 2. The upper end of the connecting bracket 23 extends from the open end of the drive box 21 and is fixedly connected to the headrest part 1. The adapter 24 is used to convert the rotation of the output shaft of the drive motor 22 into the forward and backward movement of the connecting bracket 23.

[0039] For example, the adapter 24 includes a plate 241 and a spherical part 242, which are fixedly connected. The plate 241 is fixedly movable with the connecting bracket 23. The output shaft of the drive motor 22 is provided with a thread. When the drive motor 22 is working, the output shaft of the drive motor 22 rotates. The spherical part 242 is provided with an inner hole, and the hole is provided with a thread that mates with the output shaft of the drive motor 22. The spherical part 242 can move forward or backward according to the forward and reverse rotation of the output shaft of the drive motor 22, thereby driving the plate 241 to move forward or backward, driving the connecting bracket 23 to move forward or backward, and driving the headrest 1 to move forward or backward, making the drive of the drive unit 2 to the headrest 1 simpler and more reliable.

[0040] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the drive unit 2 also includes a limiting plate 25, which is disposed in the left-right direction of the output shaft of the drive motor 22 (e.g., ...). Figure 3 As shown in the left-right direction, near the end of the connecting bracket 23, the limiting plate 25 has a limiting opening 251 that extends in the front-back direction. At least a portion of the adapter 24 passes through the limiting opening 251. The limiting opening 251 can restrict the movement direction of the adapter 24 in the front-back direction, increasing the reliability of the adapter 24's movement in the front-back direction, thereby increasing the reliability of the connecting bracket 23's movement in the front-back direction, and further increasing the reliability of the headrest portion 1's movement in the front-back direction.

[0041] In this embodiment, the connection between the plate 241 and the spherical member 242 is located within the limiting opening 251, along the vertical direction (e.g., ...). Figure 1 The dimensions of the plate 241 and the spherical part 242 (shown in the up and down direction) are larger than the cross-sectional dimensions of the limiting port 251, so that the adapter 24 can be better limited within the limiting port 251.

[0042] In some embodiments of this utility model, the connecting bracket 23 and the adapter 24 are connected by fasteners. The connection between the connecting bracket 23 and the adapter 24 is relatively simple and reliable, and easy to disassemble, making it convenient to disassemble for inspection or replacement when the connecting bracket 23 or the adapter 24 is damaged.

[0043] In some embodiments of this invention, the drive unit 2 is rotatably connected to the backrest body, and the rotation axis of the drive unit 2 extends in the left-right direction. The rotation of the drive unit 2 can drive the rotation of the headrest 1, allowing the user to freely adjust the direction and angle of the headrest according to their sitting posture needs, enabling them to find the most suitable support position and thus improve overall comfort. The rotation function of the headrest 1 allows users to make fine adjustments as needed to reduce pressure on the neck and head, thereby alleviating fatigue. Simultaneously, the rotation of the headrest 1 ensures good neck support, helping to reduce pressure on the cervical spine and lower the risk of cervical spondylosis. The rotation function of the headrest 1 helps users maintain the natural curve of their back, avoiding back and shoulder tension caused by incorrect posture. By adjusting the angle and height of the headrest, users can more easily maintain correct posture.

[0044] In some embodiments of this utility model, the upper end of the backrest body is provided with a receiving space, and at least a portion of the drive unit 2 is disposed within the receiving space. The drive unit 2 can utilize the space of the backrest body to a certain extent, which can reduce the vertical distance between the headrest 1 and the backrest body, making the support of the backrest body and the headrest 1 for the user's back, neck and head more continuous, and reducing the space occupied by the drive unit 2 and the overall volume of the seat back.

[0045] In some embodiments of this utility model, the drive unit 2 has a first limit position when rotating forward and a second limit position when rotating backward. When the drive unit 2 is in the first limit position, the front sidewall of the accommodating space abuts against at least a portion of the drive unit 2. When the drive unit 2 is in the second limit position, the rear sidewall of the accommodating space abuts against at least a portion of the drive unit 2. This allows the front and rear sidewalls of the accommodating space to mechanically limit the drive unit 2, thereby limiting the drive unit 2 by the backrest body at the first and second limit positions. Furthermore, the limiting of the drive unit 2 at the first and second limit positions is relatively simple and reliable.

[0046] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the seat back also includes a damper 3, which is located between the drive unit 2 and the backrest body to prevent the drive unit 2 from rotating. By adjusting the damper 3 during the rotation of the drive unit 2, the drive unit 2 can be stopped at a relative position, so that the headrest 1 can be stopped at a corresponding relative position. The drive unit 2 can be stopped at any position between the first limit position and the second limit position according to the user's needs, and thus the headrest 1 can be stopped at any position between the first limit position and the second limit position to meet different user needs.

[0047] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the headrest 1 includes a headrest body 11 and a base 12. The base 12 is located at the rear end of the headrest body 11 and is connected to the drive unit 2. The headrest body 11 and the base 12 are connected by fasteners. The base 12 can close the upper opening of the drive box 21. The connection between the headrest body 11 and the base 12 is relatively simple and reliable, and it is convenient to process the headrest body 11 and the base 12 separately, which facilitates the processing of the headrest 1 and makes the manufacturing of the headrest 1 relatively simple and reliable.

[0048] The seat according to an embodiment of the present utility model includes a seat surface and a seat back, wherein the backrest body is fixedly connected to the seat surface, thereby realizing the connection between the seat back and the seat surface.

[0049] According to the embodiment of the present utility model, the seat has a drive unit 2 located at the upper end of the backrest body and connected to the headrest 1. The drive unit 2 can adjust the position of the headrest 1 according to the user's needs. The headrest 1 can be adjusted to a position that fits the user's neck or head better. The headrest 1 can fit the user's neck or head better in different sitting positions, thus meeting the different user needs.

[0050] The seat backrest and other components and operation of the seat having the same according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A seat back, characterized by, For use in seats and including: Backrest body; The back of the head; A drive unit, located at the upper end of the backrest body and connected to the headrest, is used to drive the headrest to move in a forward-backward direction. The drive unit includes a drive box, a drive motor, a connecting bracket, and an adapter. The upper end of the drive box is open, and the drive motor is located inside the drive box. The upper end of the connecting bracket extends from the open end of the drive box and is fixedly connected to the headrest. The adapter is used to convert the rotation of the output shaft of the drive motor into the forward-backward movement of the connecting bracket. The adapter includes a plate and a ball-shaped part, which are fixedly connected. The plate is fixedly connected to the connecting bracket. The output shaft of the drive motor is threaded, and the ball-shaped part has an inner hole with a thread that mates with the output shaft of the drive motor. The ball-shaped part moves forward or backward according to the forward and reverse rotation of the output shaft of the drive motor.

2. The seat back of claim 1, wherein The drive unit also includes: A limiting plate is provided at one end of the output shaft of the drive motor in the left-right direction near the connecting bracket. The limiting plate is provided with a limiting opening that extends in the front-back direction. At least a portion of the adapter passes through the limiting opening.

3. The seat back of claim 1, wherein The connecting bracket and the adapter are connected by fasteners.

4. The seat back of claim 1, wherein The drive unit is rotatably connected to the backrest body, and the rotation axis of the drive unit extends in the left-right direction.

5. The seat back of claim 4, wherein The upper end of the backrest body is provided with a receiving space, and at least a portion of the drive unit is disposed within the receiving space.

6. The seat back of claim 5, wherein The drive unit has a first limit position when rotating forward and a second limit position when rotating backward. When the drive unit is in the first limit position, the front sidewall of the receiving space abuts against at least a portion of the drive unit. When the drive unit is in the second limit position, the rear sidewall of the receiving space abuts against at least a portion of the drive unit.

7. The seat back of claim 4, wherein Also includes: A damper is provided between the drive unit and the backrest body to prevent the drive unit from rotating.

8. The seat back of claim 1, wherein The headrest portion includes: headrest body; The base is located at the rear end of the headrest body and connected to the drive unit. The headrest body and the base are connected by fasteners.

9. A seat, characterized by include: seat surface; The seat backrest according to any one of claims 1-8, wherein the backrest body is fixedly connected to the seat surface.

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