Back cushion and baby carriage adopting same

Abstract

The utility model provides a backrest cushion and a baby carriage adopting the same. The backrest cushion comprises a middle part and side wing parts arranged on the two sides of the middle part; a side wing angle adjusting framework is arranged in the backrest cushion; the side wing angle adjusting framework comprises a middle framework and side wing frameworks arranged on the two sides of the middle framework respectively, the middle framework is arranged in the middle of the backrest cushion, and the side wing frameworks are arranged on the corresponding side wing parts; the angle between the two side wing frameworks and the middle framework is adjustable. The baby carriage comprises a backrest and a seat, and the backrest cushion is detachably arranged on the backrest. The flank angle adjusting framework is arranged in the backrest cushion, and the flank angle of the whole seat can be adjusted by adjusting the angle of the flank part of the backrest cushion. The device is simple in structure, low in cost, convenient to mount, dismount and maintain and good in interchangeability.

Description

Technical Field

[0001] The utility model belongs to the field of back cushions, and in particular relates to a back cushion and a baby carriage using the back cushion. Background Art

[0002] The backrest of an existing seat generally consists of a central backrest section and side wings. The angle between the wings and the central section of most seats is not adjustable; the same is true for strollers. Existing stroller seats lack side wings or adjustable wing angles. This fails to meet the comfort and practical needs of infants at all stages of their life. When infants are young, without the protection of the wings, the lack of support on either side of the body makes the ride uncomfortable, and the baby's body moves excessively on the seat. Patent CN222022749U discloses a stroller backrest structure with adjustable side wings on either side of the backrest to accommodate the baby's growth needs. However, existing adjustment mechanisms are typically built into the backrest, making the backrest structure more complex. Furthermore, the existing adjustment mechanism is fixed to the stroller seat, making it impossible to adjust the structure once the stroller is changed. Existing seat back cushions also include two wings, but neither of these wings is adjustable. Summary of the Invention

[0003] The utility model provides a back cushion and a baby carriage using the back cushion.

[0004] The purpose of the utility model is achieved in the following way: a back cushion comprises a middle part and wing parts arranged on both sides of the middle part; a wing angle adjustment frame is arranged in the back cushion; the wing angle adjustment frame comprises a middle frame and wing frames respectively arranged on both sides of the middle frame, the middle frame is arranged in the middle part of the back cushion, and the wing frames are arranged in the corresponding wing parts; the angle between the two wing frames and the middle frame is adjustable.

[0005] The backrest cushion comprises a bag-shaped outer bag layer, the side wing angle adjustment frame is arranged inside the outer bag layer; and a cushion layer is arranged between the side wing angle adjustment frame and the front surface of the backrest cushion.

[0006] A fixing mechanism for fixing the wing angle adjustment frame is provided between two inner surfaces of the backrest cushion that contact the front and rear surfaces of the wing angle adjustment frame.

[0007] The fixing mechanism includes a sewing line arranged on the back cushion along the outline or partial outline of the side wing angle adjustment frame; or the fixing mechanism includes Velcro or buttons arranged on the two inner surfaces of the back cushion that contact the front and rear surfaces of the side wing angle adjustment frame.

[0008] The outer bag layer includes a rear layer adjacent to the backrest during operation and a front layer away from the backrest; the cushion layer is fixedly arranged between the front surface of the side wing angle adjustment skeleton and the front layer of the outer bag layer, and Velcro or buttons are provided on the surface of the cushion layer facing the side wing angle adjustment skeleton and the inner surface of the rear layer of the outer bag layer.

[0009] The backrest cushion is provided with an open end through which the side wing angle adjustment frame passes when installed, and the open end is closed by stitching, or by arranging a cable, or by arranging a Velcro.

[0010] The open end of the backrest cushion is arranged at the bottom, and the open end of the backrest cushion is connected to the seat cushion.

[0011] Each of the side wing frames and the middle frame is hinged and provided with an angle adjustment mechanism. The angle adjustment mechanism comprises a damping hinge. Two mounting ends of the damping hinge are respectively fixedly provided between the side wing frame and the middle frame.

[0012] The intermediate frame includes at least one connecting frame arranged between the two side wing frames; both ends of each connecting frame are rotationally connected to the side wing frame on the corresponding side through a damping hinge.

[0013] The baby stroller adopts the backrest cushion as described above, and comprises a backrest and a seat, wherein the backrest cushion is detachably provided on the backrest.

[0014] Compared to the prior art, the present invention does not require angle-adjustable wings on either side of the backrest. Instead, it only requires a wing angle adjustment frame within the backrest cushion. By adjusting the angle of the wing portion of the backrest cushion, the wing angle of the entire seat can be adjusted. This invention has a simple structure, low cost, easy installation and disassembly, and maintenance, and good interchangeability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a diagram of a back cushion and a backrest (with a seat cushion).

[0016] Figure 2 This is a diagram of the back cushion (with seat cushion).

[0017] Figure 3 Schematic diagram of the flanking regulatory skeleton.

[0018] Figure 4 yes Figure 3 Back view.

[0019] Figure 5 This is a perspective view of the back cushion and the inner side wing adjustment frame.

[0020] Figure 6 yes Figure 5 sectional view of .

[0021] Figure 7 This is a cross-sectional view of the backrest cushion and side wing adjustment skeleton structure embodiment 1.

[0022] Figure 8 This is a second embodiment of the cross-sectional view of the backrest cushion and side wing adjustment skeleton structure.

[0023] Among them, 1 is the backrest, 2 is the backrest cushion, 21 is the middle part, 22 is the side wing part, 3 is the side wing angle adjustment frame, 31 is the middle frame, 32 is the side wing frame, 33 is the damping hinge, 4 is the outer bag layer, 5 is the cushion layer, 6 is Velcro, and 7 is the seat cushion. DETAILED DESCRIPTION

[0024] In this utility model, unless otherwise specified or limited, the technical terms used herein shall have the ordinary meanings understood by persons skilled in the art to which this utility model relates. Terms such as "connected," "connected," "fixed," and "disposed" should be interpreted broadly and may refer to fixed, removable, or integral connections; direct or indirect connections through an intermediary; and mechanical or electrical connections. Unless otherwise specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact or indirect contact through an intermediary. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature. Relational terms such as first and second are used solely to distinguish one entity or operation from another and do not necessarily require or imply any actual relationship or order between these entities or operations. The terms used in the description, such as "center", "transverse", "longitudinal", "length", "width", "thickness", "height", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "clockwise", "counterclockwise", etc., to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation.

[0025] The following will combine the accompanying drawings and specific embodiments to clearly and completely describe the technical solution of the present invention. Figure 1-8As shown, a backrest cushion 2 includes a central portion 21 and wing portions 22 disposed on either side of the central portion 21. A wing angle adjustment frame 3 is provided within the backrest cushion 2. The wing angle adjustment frame 3 includes a central frame 31 and wing frames 32 disposed on either side of the central frame 31. The central frame 31 is disposed within the central portion 21 of the backrest cushion 2, and the wing frames 32 are disposed on the corresponding wing portions 22. The angle between the two wing frames 32 and the central frame 31 is adjustable. This utility model eliminates the need for angle-adjustable wings on either side of the backrest 1. Instead, the wing angle adjustment frames 3 are provided within the backrest cushion 2. Adjusting the angle of the wing portions 22 of the backrest cushion 2 allows adjustment of the overall seat wing angle. This utility model has a simple structure, low cost, and is easy to install, disassemble, and maintain, with good interchangeability. There are various ways to adjust the angle between the central frame 31 and the wing frames 32, and existing angle adjustment methods can be applied to this utility model. The middle frame 31 and the side wing frames 32 can be made of materials commonly used in the existing backrest 1 side wings, such as plastic, etc., as long as they have a certain hardness to achieve support and angle adjustment.

[0026] The backrest cushion 2 includes a bag-shaped outer layer 4, with the wing angle adjustment frame 3 positioned within the outer layer 4. A cushioning layer 5 is provided between the wing angle adjustment frame 3 and the front surface of the backrest cushion 2. The outer layer 4 is bag-shaped and comprises a front layer, which is positioned away from the backrest 1 during operation, and a rear layer, which is positioned closer to the backrest 1. During operation, the front surface of the backrest cushion 2, i.e., the outer surface of the front layer of the outer layer 4, rests against the user's back. The rear surface of the backrest cushion 2, i.e., the outer surface of the rear layer of the outer layer 4, rests against the backrest 1 of the chair. A cushioning layer 5 may or may not be provided between the wing angle adjustment frame 3 and the rear surface of the backrest cushion 2. The thickness of the cushioning layer 5 is determined as needed to provide optimal comfort for the user's back when resting on the backrest cushion 2. The cushioning layer 5 can be a separate layer, separate from the outer layer 4 of the backrest 1. If the front layer of the outer layer 4 is already thick, it can function as the cushioning layer 5, eliminating the need for a dedicated cushioning layer 5. If it is a separate cushion layer 5, the cushion layer 5 and the outer bag layer 4 can be connected together by sewing, buttons, inlaying and other existing methods. The specific connection method is referred to the existing technology and will not be described in detail.

[0027] A fixing mechanism for fixing the wing angle adjustment frame 3 is provided between the two inner surfaces of the backrest cushion 2 that contact the front and rear surfaces of the wing angle adjustment frame 3. Various fixing mechanisms are possible. Existing methods for fixing two fabric layers can be applied to the fixing mechanism of the present invention.

[0028] The fixing mechanism may include sewing lines arranged on the back cushion 2 along the contour or partial contour of the wing angle adjustment frame 3; or the fixing mechanism may include Velcro 6 or buttons arranged on two inner surfaces of the back cushion 2 that contact the front and rear surfaces of the wing angle adjustment frame 3. Specifically, after the wing angle adjustment frame 3 is placed in the back cushion 2, sewing is performed on the back cushion 2 along the contour or partial contour of the wing angle adjustment frame 3 to limit and secure the wing angle adjustment frame 3. Alternatively, a plurality of Velcro strips 6 may be arranged on each inner surface of the back cushion 2, and the Velcro 6 may be used to adhere the two surfaces together or to adhere the two surfaces to the wing angle adjustment frame 3. Alternatively, buttons or other fasteners may be used on the two inner surfaces of the back cushion 2 to limit the position of the wing angle adjustment frame 3. Of course, other methods are also applicable.

[0029] The outer bag layer 4 includes a rear layer adjacent to the backrest 1 during operation and a front layer away from the backrest 1; the cushion layer 5 is fixedly arranged between the front surface of the wing angle adjustment skeleton 3 and the front layer of the outer bag layer 4, and Velcro 6 or buttons are provided on the surface of the cushion layer 5 facing the wing angle adjustment skeleton 3 and the inner surface of the rear layer of the outer bag layer 4. The rear layer is close to the backrest 1, and a cushion layer 5 may or may not be provided. Please refer to the two embodiments in the attached drawings. In the embodiment where a cushion layer 5 is provided close to the thick layer, Velcro 6 or buttons are provided on the two cushion layers 5. The outer bag layer 4 can be a cloth bag or made of other materials, and the thickness is determined according to needs.

[0030] The backrest cushion 2 is provided with an open end through which the side wing angle adjustment frame 3 passes when installed, and the open end is closed by stitching, or by setting a drawstring, or by setting a Velcro 6. Other existing closing methods may also be used, which will not be described in detail.

[0031] The open end of the backrest cushion 2 is located at the bottom, and the open end of the backrest cushion 2 is connected to the seat cushion 7. In practice, the existing backrest cushion 2 is often integrated with the seat cushion 7. It is necessary to first install the side wing angle adjustment frame 3 in the backrest cushion 2 and fix it, and then connect the backrest cushion 2 and the seat cushion 7 together, such as by sewing them together.

[0032] Each of the side wing frames 32 and the intermediate frame 31 is hingedly connected and provided with an angle adjustment mechanism. This angle adjustment mechanism includes a damping hinge 33, the two mounting ends of which are fixedly disposed between the side wing frames 32 and the intermediate frame 31. The damping hinge 33, also known as a damping hinge, requires a certain amount of force to rotate. The present invention allows for the selection of damping hinges 33 of appropriate specifications, enabling the side wing frames 32 to be rotated only by pushing them. Once rotated to the appropriate position, the angle between the side wing frames 32 and the intermediate frame 31 remains unchanged unless a predetermined large external force is applied. Such damping hinges 33 are currently available on the market, and their specific structure will not be described in detail here. The two mounting ends of the resistance hinges can be fixedly connected to the side wing frames 32 and the intermediate frame 31, respectively, via bolts. The angle adjustment mechanism can also adopt the angle adjustment mechanism described in Patent CN222022749U, which is disposed between the intermediate frame 31 and the side wing frames 32.

[0033] The central frame 31 includes at least one connecting frame positioned between the two side wing frames 32. Each connecting frame is pivotally connected to the corresponding side wing frame 32 via damping hinges 33 at both ends. In the illustrated embodiment, two connecting frames are provided. The side wing angle adjustment frames 3 are secured by Velcro strips 6. Each Velcro strip 6 passes through two connecting frames, securing the outer bag layer 4 and the cushion layer 5 outside the connecting frames together, thereby securing the position of the side wing angle adjustment frames 3.

[0034] A baby stroller using the above-mentioned backrest cushion 2 includes a backrest 1 and a seat, and the backrest cushion 2 is detachably provided on the backrest 1. The connection between the backrest 1 and the backrest cushion 2 adopts an existing connection method, such as providing a female buckle on the backrest 1 and a male buckle on the backrest cushion 2, and achieving a detachable connection through the buckles. These connection methods belong to the prior art and will not be described in detail. A seat cushion 7 can also be provided on the seat, and the seat cushion 7 is fixed to the backrest cushion 2. The structure of the utility model can also be applied to other backrest cushions 2 and seats that require adjustment of the side wing angle.

[0035] During specific implementation: fix the backrest cushion 2 on the backrest 1. When the angle of the backrest cushion 2 needs to be adjusted, forcefully rotate the side wing portion of the backrest cushion 2 until the required angle is reached.

[0036] The technical features of the above-described embodiments may be combined in any manner, and as long as there are no contradictions in the combination of these technical features, they shall be deemed to be within the scope of this specification. Without departing from the overall concept of the present invention, the technical solutions of the present invention, their equivalent replacements or modifications, and certain changes and improvements made thereto shall also be deemed to be within the scope of protection of the present invention.

Claims

1. A backrest cushion comprising a middle portion and side wing portions disposed on both sides of the middle portion; characterized in that: A side wing angle adjustment frame is set in the back cushion; the side wing angle adjustment frame includes a middle frame and side wing frames respectively set on both sides of the middle frame. The middle frame is set in the middle part of the back cushion, and the side wing frames are set in the corresponding side wing parts; the angle between the two side wing frames and the middle frame is adjustable.

2. A backrest cushion according to claim 1, characterized in that: The backrest cushion comprises a bag-shaped outer bag layer, the side wing angle adjustment frame is arranged inside the outer bag layer; and a cushion layer is arranged between the side wing angle adjustment frame and the front surface of the backrest cushion.

3. A backrest cushion according to claim 2, characterized in that: A fixing mechanism for fixing the wing angle adjustment frame is provided between two inner surfaces of the backrest cushion that contact the front and rear surfaces of the wing angle adjustment frame.

4. A backrest cushion according to claim 3, characterized in that: The fixing mechanism includes a sewing line arranged on the back cushion along the outline or partial outline of the side wing angle adjustment frame; or the fixing mechanism includes Velcro or buttons arranged on the two inner surfaces of the back cushion that contact the front and rear surfaces of the side wing angle adjustment frame.

5. The backrest cushion according to claim 4, characterized in that: The outer bag layer includes a rear layer adjacent to the backrest during operation and a front layer away from the backrest; the cushion layer is fixedly arranged between the front surface of the side wing angle adjustment skeleton and the front layer of the outer bag layer, and Velcro or buttons are provided on the surface of the cushion layer facing the side wing angle adjustment skeleton and the inner surface of the rear layer of the outer bag layer.

6. The backrest cushion according to claim 2, characterized in that: The backrest cushion is provided with an open end through which the side wing angle adjustment frame passes when installed, and the open end is closed by stitching, or by arranging a cable, or by arranging a Velcro.

7. The backrest cushion according to claim 6, characterized in that: The open end of the backrest cushion is arranged at the bottom, and the open end of the backrest cushion is connected to the seat cushion.

8. A backrest cushion according to any one of claims 1 to 7, characterized in that: Each of the side wing frames and the middle frame is hinged and provided with an angle adjustment mechanism. The angle adjustment mechanism comprises a damping hinge. Two mounting ends of the damping hinge are respectively fixedly provided between the side wing frame and the middle frame.

9. The backrest cushion according to claim 8, characterized in that: The intermediate frame includes at least one connecting frame arranged between the two side wing frames; both ends of each connecting frame are rotationally connected to the side wing frame on the corresponding side through a damping hinge.

10. A baby stroller using the backrest cushion according to any one of claims 1 to 9, the baby stroller comprising a backrest and a seat, characterized in that: The backrest cushion is detachably arranged on the backrest.

Images