Afternoon nap chair

Abstract

The utility model discloses an afternoon nap chair which comprises a chair back, a seat and a headrest, the included angle between the chair back and the seat is adjusted through a rotating mechanism, an adjusting rod is arranged on the headrest, an adjusting groove extending towards the seat is formed in the chair back, the adjusting rod is inserted into the adjusting groove, an adjusting hole is formed in the outer wall of the adjusting rod, and a limiting groove is formed in the inner wall of the adjusting groove. The opening of the limiting groove faces the adjusting rod, a limiting ball and an elastic piece are arranged in the limiting groove, the aperture of the adjusting hole is smaller than the diameter of the limiting ball, the limiting ball is embedded into the adjusting hole or abuts against the outer wall of the adjusting rod under the action of the elastic piece, and when the depth of the adjusting rod inserted into the adjusting groove is maximum, the headrest abuts against the opening of the adjusting groove. A user can set or cancel the headrest according to actual requirements, and compared with the prior art, the headrest can provide better use experience.

Description

Technical Field

[0001] This utility model belongs to the field of chair technology, specifically relating to a nap chair. Background Technology

[0002] A chair is a common piece of furniture, typically consisting of a seat and a backrest. To enhance comfort, chairs usually also include a headrest. Traditional chairs often have a single integrated backrest and seat design, preventing users from adjusting the angle between the backrest and seat as needed.

[0003] Chinese utility model patent application number CN202221612964.8 discloses a folding nap chair that can adjust the angle between the backrest and the seat cushion, allowing the chair to switch between a sitting and reclining position, improving user comfort and making it convenient for users to take a nap.

[0004] However, the above patent still has the following problems: (1) Users cannot adjust the distance between the headrest and the seat according to their own needs. (2) The angle between the backrest and the seat can only be adjusted to a few fixed angles, and users cannot adjust it to the most comfortable angle according to their personal needs. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a nap chair that provides a truly comfortable experience.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a nap chair, including a backrest and a headrest, wherein the headrest is provided with an adjustment rod, the backrest is provided with an adjustment groove, the adjustment rod is inserted into the adjustment groove, the outer wall of the adjustment rod is provided with an adjustment hole, the inner wall of the adjustment groove is provided with a limiting groove, the opening of the limiting groove faces the adjustment rod, the limiting groove is provided with a limiting ball and an elastic element, the diameter of the adjustment hole is smaller than the diameter of the limiting ball, the limiting ball is embedded in the adjustment hole or abuts against the outer wall of the adjustment rod under the action of the elastic element, and when the adjustment rod is inserted into the adjustment groove to its maximum depth, the headrest abuts against the opening of the adjustment groove.

[0007] Using the above scheme, when the adjustment rod is inserted into the adjustment slot to the maximum depth, the headrest is completely located behind the back of the chair, which meets the needs of classes, group training, etc. As the depth of the adjustment rod inserted into the adjustment slot decreases, the headrest gradually protrudes from the back of the chair. The back of the chair refers to the side of the chair back facing away from the user when the user is sitting in the seat.

[0008] When the headrest is needed, apply a force away from the seat to the headrest, causing the adjustment rod to move within the adjustment groove. The limiting ball rolls along the outer wall of the adjustment rod until it is embedded in the adjustment hole under the action of the elastic element. Then release the force applied to the headrest. The headrest remains protruding from the backrest due to the cooperation of the limiting ball and the adjustment hole, making it convenient for the user to lean their head. When the headrest is not needed, apply a force towards the seat to the headrest, causing the limiting ball to disengage from the adjustment hole until the headrest and the groove of the adjustment groove are in a limiting position.

[0009] Users can set or remove the headrest according to their actual needs. Compared with the prior art, this utility model can provide a better user experience.

[0010] As a further feature of this invention, there are at least two adjustment holes, and all the adjustment holes are arranged sequentially along the extension direction of the adjustment rod.

[0011] Using the above solution, for the same user, the positional relationship between the user's head and the headrest changes as the angle between the chair back and the seat changes. The user can adjust the distance between the headrest and the seat by connecting the limiting ball to different adjustment holes, ensuring that the user's head remains supported on the headrest even after the angle between the chair back and the seat changes, providing a comfortable leaning experience. For different users with different body shapes, adjusting the distance between the headrest and the seat allows users of different body types to obtain a comfortable leaning experience.

[0012] As a further feature of this invention, a limiting hole is provided on the outer wall of the adjusting rod. The diameter of the limiting hole is smaller than the diameter of the limiting ball. When the adjusting rod is inserted into the adjusting groove to its maximum depth, the limiting ball is located inside the limiting hole.

[0013] With the above solution, the presence of the limiting hole means that the user needs to apply a certain amount of force to adjust the headrest. When the user does not need the headrest, even if the headrest tilts or is bumped, the headrest can remain relatively fixed to the backrest.

[0014] As a further feature of this invention, the diameter of the limiting hole is the same as the diameter of the adjusting hole, and the diameter of the adjusting hole is larger than the radius of the limiting ball.

[0015] Using the above solution, the diameters of the limiting hole and the adjustment hole are the same, which facilitates processing. The size of the hole requires the user to apply a certain force to disengage the limiting ball from the limiting hole or the adjustment hole, ensuring that the headrest and backrest remain relatively fixed when there is no external force or a small external force.

[0016] As a further feature of this invention, the headrest has a protrusion on the side facing away from the chair back.

[0017] With the above design, the raised part makes it easy for users to apply force to the headrest and adjust the distance between the headrest and the seat cushion.

[0018] As a further feature of this invention, the headrest includes a fixing groove for inserting an adjustment rod, the fixing groove and the adjustment groove being arranged opposite to each other, and the fixing groove and the adjustment rod being fixed together by bolts.

[0019] Using the above design, to ensure headrest comfort, the headrest typically includes a frame and an elastic pad. To ensure the strength of the adjustment rod, it is usually made of metal. The headrest and adjustment rod are separate components, which facilitates processing and reduces manufacturing difficulty. After a period of use, the headrest is prone to deformation or damage; the separate design of the headrest and adjustment rod makes replacement and repair of the headrest easier.

[0020] As a further feature of this invention, a seat is also included. The angle between the backrest and the seat is adjusted by a rotating mechanism. The rotating mechanism includes a rotating shaft and a telescopic rod. The backrest is fixed to the rotating shaft, and the rotating shaft is rotatably connected to the seat. The rotating shaft is provided with a connecting part that protrudes radially along the rotating shaft. One end of the telescopic rod is rotatably connected to the seat, and the other end is rotatably connected to the connecting part. The telescopic rod is perpendicular to the rotating shaft. The telescopic rod is a self-locking pneumatic rod or a self-locking hydraulic rod. The telescopic rod includes a switch for controlling the telescopic rod's extension and retraction function.

[0021] Using the above solution, the user can control the extension and retraction of the telescopic rod via a switch, thereby adjusting the angle between the chair back and the seat. When the switch is not activated, the telescopic rod is locked, and the chair back and seat remain relatively fixed. To increase the angle, the user first activates the switch and then applies force to the chair back, causing it to rotate along the axis of the pivot, thus increasing the angle between the chair back and the seat. After rotating to the desired position, releasing the switch will keep the chair back and seat relatively fixed at that angle. To decrease the angle, the user first activates the switch, causing the telescopic rod to automatically extend, rotating the pivot through the connecting part, and rotating the chair back. After rotating to the desired position, releasing the switch will keep the chair back and seat relatively fixed at that angle.

[0022] As a further feature of this invention, the end of the rotating shaft is provided with a limiting block that protrudes along the axial direction of the rotating shaft, and the seat is provided with a limiting cavity that forms a limiting position with the limiting block.

[0023] By adopting the above solution, the limiting block and the limiting cavity work together to limit the maximum and minimum angles between the chair back and the seat, ensuring the normal operation of the rotating mechanism and making it convenient for the user to adjust.

[0024] As a further feature of this invention, the switch is located under the seat and at the edge of the seat, with the switch and the backrest located on adjacent sides of the seat, respectively.

[0025] The above solution makes it convenient for users to apply force to the switch.

[0026] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0027] Appendix Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present utility model;

[0028] Appendix Figure 2 This is a rear view of a specific embodiment of the present utility model;

[0029] Appendix Figure 3 For the appendix Figure 2 AA section view;

[0030] Appendix Figure 4 This is a schematic diagram of the cooperation between the rotating shaft and the telescopic rod in a specific embodiment of this utility model;

[0031] Appendix Figure 5 This is a schematic diagram of the cooperation between the limiting block and the limiting cavity in a specific embodiment of this utility model.

[0032] Chair back 1, adjustment groove 11, limit groove 111, limit ball 112, elastic element 113, pivot 12, connecting part 121, limit block 122, seat 2, frame 2a, cushion 2b, telescopic rod 21, switch 211, limit cavity 22, headrest 3, protrusion 31, fixing groove 32, adjustment rod 4, limit hole 41, adjustment hole 42, storage basket 5, footrest 6. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. 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.

[0034] In the description of this utility model, it should be noted that, unless otherwise specified, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this utility model and simplifying the description. They 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, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] Specific embodiments of this utility model are as follows: Figure 1-5 As shown.

[0036] A nap chair includes a backrest 1, a seat 2, and a headrest 3. This embodiment also includes a storage basket 5. In this embodiment, the seat 2 includes a frame 2a, a cushion 2b wrapped around the frame 2a, and a footrest 6 rotatably connected to the frame 2a. In this embodiment, the cushion 2b is made of plastic, but it can also be a soft, elastic cushion. The headrest 3 has an adjustment rod 4, and the backrest 1 has an adjustment groove 11 extending towards the seat 2. The adjustment rod 4 is inserted into the adjustment groove 11. The outer wall of the adjustment rod 4 has a limiting hole 41 and at least two adjustment holes 42, arranged sequentially along the extension direction of the adjustment rod 4. In this embodiment, there are two adjustment holes 42. The inner wall of the adjustment groove 11 is provided with a limiting groove 111, the opening of the limiting groove 111 facing the adjustment rod 4. The limiting groove 111 is provided with a limiting ball 112 and an elastic element 113. The diameter of the adjustment hole 42 is smaller than the diameter of the limiting ball 112 but larger than the radius of the limiting ball 112. The diameter of the limiting hole 41 is the same as the diameter of the adjustment hole 42. Under the action of the elastic element 113, the limiting ball 112 is embedded in the adjustment hole 42, embedded in the limiting hole 41, or abuts against the outer wall of the adjustment rod 4. When the adjustment rod 4 is inserted into the adjustment groove 11 to the maximum depth, the headrest 3 abuts against the opening of the adjustment groove 11, and at the same time, the limiting ball 112 is located in the limiting hole 41. In this embodiment, when the adjustment rod 4 is inserted into the adjustment groove 11 to the maximum depth, the headrest 3 is completely located on the back of the chair back 1. The back of the chair back 1 refers to the side of the chair back 1 facing away from the user after the user sits on the seat 2.

[0037] When the headrest 3 is needed, a force is applied to the headrest 3 away from the seat 2, causing the adjusting rod 4 to move within the adjusting groove 11. The limiting ball 112 rolls along the outer wall of the adjusting rod 4 until the limiting ball 112 is embedded in the adjusting hole 42 under the action of the elastic element 113. Then, the force applied to the headrest 3 is released. The headrest 3 remains in a protruding backrest state under the cooperation of the limiting ball 112 and the adjusting hole 42, making it convenient for the user's head to lean against. When the headrest 3 is not needed, a force is applied to the headrest 3 toward the seat 2, causing the limiting ball 112 to disengage from the adjusting hole 42 until the headrest 3 forms a limit with the groove opening of the adjusting groove 11. At this time, the limiting ball 112 is located within the limiting hole 41.

[0038] For the same user, as the angle between the backrest 1 and the seat 2 changes, the positional relationship between the user's head and the headrest 3 also changes. The user can adjust the distance between the headrest 3 and the seat 2 by engaging the limiting ball 112 with different adjustment holes 42, ensuring that the user's head can still rest on the headrest 3 after the angle between the backrest 1 and the seat 2 changes, providing a comfortable support experience. For different users with different body shapes, adjusting the distance between the headrest 3 and the seat 2 allows users of different body shapes to obtain a comfortable support experience.

[0039] The presence of the limiting hole 41 means that the user needs to apply a certain force to move the headrest 3. When the user does not need to adjust the headrest 3, even if the headrest 3 tilts or is bumped, the headrest 3 can remain relatively fixed with the backrest.

[0040] The aperture sizes of the adjustment hole 42 and the limiting hole 41 require the user to apply a certain force to disengage the limiting ball 112 from the limiting hole 41 or the adjustment hole 42, ensuring that the headrest 3 remains relatively fixed to the backrest when there is no external force or a small external force.

[0041] The headrest 3 has a protrusion 31 on the side facing away from the backrest 1. The protrusion 31 makes it convenient for the user to apply force to the headrest 3 and to adjust the distance between the headrest 3 and the seat cushion.

[0042] The headrest 3 includes a fixing groove 32 for inserting an adjustment rod 4. The fixing groove 32 and the adjustment groove 11 are arranged opposite to each other, and the fixing groove 32 and the adjustment rod 4 are fixed together by bolts. To ensure the comfort of the headrest 3, it typically includes a frame and an elastic pad. To ensure the strength of the adjustment rod 4, it is typically made of metal. The headrest 3 and the adjustment rod 4 are separate parts, which facilitates processing and reduces manufacturing difficulty. After a period of use, the headrest 3 is prone to deformation or damage. The separate design of the headrest 3 and the adjustment rod 4 facilitates replacement and repair of the headrest 3.

[0043] A pivot 12 is fixed to the backrest 1, and the pivot 12 is rotatably connected to the seat 2. The pivot 12 has a connecting portion 121 that protrudes radially along the pivot 12. A telescopic rod 21 is provided on the seat 2. One end of the telescopic rod 21 is rotatably connected to the seat 2, and the other end is rotatably connected to the connecting portion 121. In this embodiment, both ends of the pivot 12 are rotatably connected to the frame 2a, and the telescopic rod 21 is fixed to the frame 2a. The telescopic rod 21 is perpendicular to the pivot 12. The telescopic rod 21 is a self-locking pneumatic rod or a self-locking hydraulic rod. The telescopic rod 21 includes a switch 211 that controls the extension and retraction of the telescopic rod 21. The user can control the extension and retraction of the telescopic rod 21 through the switch 211, thereby adjusting the angle between the backrest 1 and the seat 2. When the switch 211 is not triggered, the telescopic rod 21 is in a locked state, at which time the backrest 1 and the seat 2 remain relatively fixed. When the angle needs to be increased, the user first triggers switch 211 and then applies force to the backrest 1, which will cause the backrest 1 to rotate along the axis of the pivot 12, increasing the angle between the backrest 1 and the seat 2. After rotating to the appropriate position, the user releases switch 211, which will keep the backrest 1 and the seat 2 relatively fixed at that angle. When the angle needs to be decreased, the user first triggers switch 211, which will automatically extend the telescopic rod 21, causing the pivot 12 to rotate through the connecting part 121, thus rotating the backrest 1. After rotating to the appropriate position, the user releases switch 211, which will keep the backrest 1 and the seat 2 relatively fixed at that angle.

[0044] The end of the rotating shaft 12 is provided with a limiting block 122 that protrudes along the axial direction of the rotating shaft 12, and the seat 2 is provided with a limiting cavity 22 that forms a limiting position with the limiting block 122. In this embodiment, the limiting cavity 22 is provided on the frame 2a, and the limiting block 122 cooperates with the limiting cavity 22 to limit the maximum and minimum included angle between the backrest 1 and the seat 2, ensuring the normal operation of the rotating mechanism, and at the same time facilitating user adjustment.

[0045] The switch 211 is located below the seat 2 and at the edge of the seat 2. The switch 211 and the backrest are located on adjacent sides of the seat 2, respectively. This allows the user to apply force to the switch 211.

[0046] Compared with the prior art, this utility model can provide a better user experience.

[0047] This utility model is not limited to the specific embodiments described above. Those skilled in the art can implement this utility model using other specific embodiments based on the content disclosed in this utility model. Any simple changes or modifications made to the design structure and concept of this utility model will fall within the protection scope of this utility model.

Claims

1. A nap chair, comprising a backrest and a headrest, characterized in that: The headrest is equipped with an adjustment rod, and the backrest is equipped with an adjustment groove. The adjustment rod is inserted into the adjustment groove. The outer wall of the adjustment rod is equipped with an adjustment hole, and the inner wall of the adjustment groove is equipped with a limiting groove. The opening of the limiting groove faces the adjustment rod. The limiting groove is equipped with a limiting ball and an elastic element. The diameter of the adjustment hole is smaller than the diameter of the limiting ball. Under the action of the elastic element, the limiting ball is embedded in the adjustment hole or abuts against the outer wall of the adjustment rod. When the adjustment rod is inserted into the adjustment groove to its maximum depth, the headrest abuts against the opening of the adjustment groove.

2. A nap chair according to claim 1, characterized in that: There are at least two adjustment holes, and all the adjustment holes are arranged sequentially along the extension direction of the adjustment rod.

3. A nap chair according to claim 1 or 2, characterized in that: The outer wall of the adjusting rod is provided with a limiting hole. The diameter of the limiting hole is smaller than the diameter of the limiting ball. When the adjusting rod is inserted into the adjusting groove to the maximum depth, the limiting ball is located in the limiting hole.

4. A nap chair according to claim 3, characterized in that: The diameter of the limiting hole is the same as the diameter of the adjusting hole, and the diameter of the adjusting hole is larger than the radius of the limiting ball.

5. A nap chair according to claim 1 or 4, characterized in that: The headrest has a raised section on the side facing away from the chair back.

6. A nap chair according to claim 5, characterized in that: The headrest includes a fixing groove for inserting an adjustment rod. The fixing groove and the adjustment groove are arranged opposite to each other, and the fixing groove and the adjustment rod are fixed together by bolts.

7. A nap chair according to claim 1, 4, or 6, characterized in that: It also includes a seat, wherein the angle between the backrest and the seat is adjusted by a rotating mechanism. The rotating mechanism includes a pivot and a telescopic rod. The pivot is fixed to the backrest and rotatably connected to the seat. The pivot has a connecting part that protrudes radially along the pivot. One end of the telescopic rod is rotatably connected to the seat, and the other end is rotatably connected to the connecting part. The telescopic rod is perpendicular to the pivot. The telescopic rod is a self-locking pneumatic rod or a self-locking hydraulic rod. The telescopic rod includes a switch that controls the telescopic rod's extension and retraction function.

8. A nap chair according to claim 7, characterized in that: The end face of the rotating shaft is provided with a limiting block that protrudes along the axial direction of the rotating shaft, and the seat is provided with a limiting cavity that forms a limiting position with the limiting block.

9. A nap chair according to claim 8, characterized in that: The switch is located under the seat and at the edge of the seat, with the switch and the backrest located on opposite sides of the seat.

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