Foldable seat backrest mechanism and scooter

Abstract

The utility model provides a foldable seat backrest mechanism and a scooter, the foldable seat backrest mechanism comprises a backrest support and a backrest assembly, the backrest support is provided with a supporting part, and the end, away from the supporting part, of the backrest support is fixedly connected with a seat; the backrest assembly is rotationally connected with the backrest bracket and can rotate around a rotating center relative to the backrest bracket; the backrest assembly is provided with a folding position and an unfolding position relative to the backrest support, and when the backrest assembly is located at the folding position, the backrest assembly is buckled with the seat; the backrest assembly is supported by the support portion when the backrest assembly is in the deployed position. According to the foldable seat backrest mechanism and the scooter, due to the fact that the foldable seat backrest mechanism comprises the backrest support and the backrest assembly, the backrest assembly can rotate around the rotating center relative to the backrest support, the foldable seat backrest mechanism can be inwards stored after being used and can be relatively folded into a flat shape, and the space utilization rate is greatly increased; the backrest support is provided with a supporting part, the backrest assembly is prevented from turning backwards, and stability is improved.

Description

Technical Field

[0001] This disclosure relates to the field of mobility scooter technology, and more particularly to a foldable seat back mechanism and a mobility scooter. Background Technology

[0002] Currently, the seat backs of most commuter vehicles on the market typically rely on side support structures to maintain their stability and position. These support structures are usually metal frames or other sturdy materials. These side support structures not only provide support but also allow the seat back to rotate and fold. However, this type of folding method results in a bulky structure distributed on both sides of the product, taking up considerable space and contradicting the product's lightweight design, thus affecting the user experience. Utility Model Content

[0003] This disclosure provides a foldable seat back mechanism and a mobility scooter to at least solve the above-mentioned technical problems existing in the prior art.

[0004] According to a first aspect of this disclosure, a foldable seat back mechanism is provided, comprising:

[0005] A backrest support having a support portion, wherein one end of the backrest support remote from the support portion is fixedly connected to the seat; and

[0006] A backrest assembly is rotatably connected to the backrest bracket and is capable of rotating relative to the backrest bracket about a rotation center;

[0007] The backrest assembly has a folded position and an unfolded position relative to the backrest bracket. When the backrest assembly is in the folded position, it is fastened to the seat. When the backrest assembly is in the unfolded position, it is supported by the support portion.

[0008] In one embodiment, the backrest support includes a first connecting portion connected to the seat and a second connecting portion rotatably connected to the backrest assembly. The first connecting portion and the second connecting portion are connected and form an angle between them. The support portion is formed on the second connecting portion.

[0009] In one embodiment, the support portion includes a plurality of first reinforcing ribs arranged side by side. Each first reinforcing rib includes an arc-shaped segment and a bearing segment. When the backrest assembly is in the unfolded position, the backrest assembly is supported on the bearing segment.

[0010] In one embodiment, the backrest assembly includes a first cover plate rotatably connected to the second connecting portion, and the first cover plate is provided with a first clearance groove so that the first cover plate can avoid the arc-shaped segment when rotating.

[0011] In one embodiment, shaft holes are provided on both sides of the first clearance groove, and rotating shafts are provided on both sides of the second connecting part, with the two shaft holes corresponding to each other and being engaged on the two rotating shafts.

[0012] In one embodiment, the backrest assembly further includes a second cover plate connected to the first cover plate, the second cover plate being detachable from the first cover plate.

[0013] In one embodiment, the second cover plate is provided with a second clearance groove so that the second cover plate can avoid the arc-shaped segment when it rotates synchronously with the first cover plate.

[0014] In one embodiment, a plurality of second reinforcing ribs are provided on the first cover plate near the first clearance groove.

[0015] In one embodiment, a plurality of third reinforcing ribs are arranged side by side at the connection between the first connecting portion and the second connecting portion.

[0016] According to a second aspect of this disclosure, a mobility scooter is provided, the mobility scooter being provided with a foldable seat back mechanism as described in any of the above-described embodiments.

[0017] In this disclosure, the foldable seat back mechanism includes a backrest support and a backrest assembly. The backrest assembly can rotate relative to the backrest support around a rotation center, allowing the foldable seat back mechanism to be stored inward after use and folded into a flat shape, greatly improving space utilization. In addition, the backrest support has a support part, which can support the backrest assembly when it is in the unfolded position, preventing the backrest assembly from tipping backward and improving the stability of the overall structure.

[0018] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0019] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:

[0020] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0021] Figure 1 A schematic diagram of the overall structure of a foldable seat back mechanism in an exemplary embodiment of this disclosure is shown (the backrest assembly is in the unfolded position);

[0022] Figure 2 A schematic diagram of the overall structure of a foldable seat back mechanism in an exemplary embodiment of this disclosure is shown (the backrest assembly is in the folded position);

[0023] Figure 3 A schematic diagram of the overall structure of a foldable seat back mechanism, an exemplary embodiment of the present disclosure, is shown.

[0024] Figure 4 A schematic diagram of the backrest support of a foldable seat backrest mechanism, an exemplary embodiment of the present disclosure, is shown.

[0025] Figure 5 A schematic diagram of the structure of the first cover plate of a foldable seat back mechanism according to an exemplary embodiment of the present disclosure is shown;

[0026] Figure 6 A schematic diagram of the structure of a foldable seat back mechanism connected to a first cover plate and a backrest bracket, according to an exemplary embodiment of the present disclosure, is shown.

[0027] The following are the labels in the diagram: 1. Backrest bracket; 2. Backrest assembly; 3. Seat; 11. First connecting part; 12. Second connecting part; 13. Third reinforcing rib; 21. First cover plate; 22. Second cover plate; 121. First reinforcing rib; 122. Rotating shaft; 211. First clearance groove; 212. Second reinforcing rib; 1211. Arc-shaped segment; 1212. Bearing segment; 2111. Shaft hole. Detailed Implementation

[0028] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0029] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0030] Reference Figures 1-3 As shown, an exemplary embodiment of the present disclosure discloses a foldable seat back mechanism, including a backrest support 1 and a backrest assembly 2. The backrest support 1 has a support portion, and one end of the backrest support 1 away from the support portion is fixedly connected to a seat 3. The backrest assembly 2 is rotatably connected to the backrest support 1 and can rotate relative to the backrest support 1 about a rotation center. The backrest assembly 2 has a folded position and an unfolded position relative to the backrest support 1. When the backrest assembly 2 is in the folded position, it is engaged with the seat 3; when the backrest assembly 2 is in the unfolded position, it is supported by the support portion.

[0031] In this embodiment, it should first be noted that the front-back, left-right, up-down directions in this disclosure are based on the direction when the foldable seat back mechanism is in normal use. For example, the seat 3 is located in front of the backrest assembly 2, providing a seat for the user. The backrest assembly 2 provides back support for the user, and its design typically takes ergonomics into account to ensure user comfort and safety during use. The end of the backrest bracket 1 furthest from the support is fixed to the center position of the seat 3 in the left-right direction, which can improve space utilization. When the backrest assembly 2 is in the unfolded position, it is supported by the support to prevent it from tipping backward; when the backrest assembly 2 is switched from the unfolded position to the folded position, it rotates relative to the backrest bracket 1 around the rotation center and moves closer to the seat 3 until the backrest assembly 2 and the seat 3 are engaged. It should be noted that when the backrest assembly 2 is in the folded position, the front surface of the backrest assembly 2 is preferably pressed against the upper surface of the seat 3. "Pressed against" emphasizes the compact structure of the foldable seat backrest mechanism after it is folded up. For example, the gap between the two pressed objects can be limited to less than 8mm, and the gap is preferably less than 5mm or 2mm. Therefore, since the foldable seat backrest mechanism includes the backrest support 1 and the backrest assembly 2, the backrest assembly 2 can rotate relative to the backrest support 1 around a rotation center, allowing the foldable seat backrest mechanism to be folded inwards and flattened after use, greatly improving space utilization. Furthermore, since the backrest support 1 has a support portion, when the backrest assembly 2 is in the unfolded position, it is supported by the support portion, preventing the backrest assembly 2 from tipping backward and improving the overall structural stability.

[0032] Reference Figure 4 As shown, in one embodiment, the backrest support 1 includes a first connecting part 11 connected to the seat 3 and a second connecting part 12 rotatably connected to the backrest assembly 2. The first connecting part 11 and the second connecting part 12 are connected and an angle is formed between the first connecting part 11 and the second connecting part 12. A support part is formed on the second connecting part 12.

[0033] In this embodiment, the angle formed between the first connecting part 11 and the second connecting part 12 needs to be adaptively designed based on the optimal backrest assembly 2 providing back support to the user when it is in the unfolded position, ensuring the user's maximum comfort. The first connecting part 11 and the second connecting part 12 are integrally molded structures; that is, the backrest bracket 1 is preferably an integral structure, thereby improving the durability and service life of the backrest bracket 1. When the first connecting part 11 is connected to the seat 3, it should be fixed at the center position of the seat 3 in the left-right direction to improve space utilization.

[0034] In one embodiment, the support includes a plurality of first reinforcing ribs 121 arranged side by side. Each first reinforcing rib 121 includes an arc-shaped segment 1211 and a bearing segment 1212. When the backrest assembly 2 is in the unfolded position, the backrest assembly 2 is supported on the bearing segment 1212.

[0035] In this embodiment, the first reinforcing rib 121 serves as a support for the backrest assembly 2, preventing the backrest assembly 2 from flipping backward. Specifically, the backrest assembly 2 rests against the bearing section 1212 of the first reinforcing rib 121 to improve the safety and stability of the user when leaning against the backrest assembly 2.

[0036] Reference Figure 5 and Figure 6 As shown, in one embodiment, the backrest assembly 2 includes a first cover plate 21 rotatably connected to the second connecting portion 12. The first cover plate 21 is provided with a first clearance groove 211 so that the first cover plate 21 can avoid the arc segment 1211 when rotating.

[0037] In one embodiment, shaft holes 2111 are provided on both sides of the first clearance groove 211, and rotating shafts 122 are provided on both sides of the second connecting part 12, with the two shaft holes 2111 corresponding to the two rotating shafts 122.

[0038] In this embodiment, the first cover plate 21 is the rear cover of the backrest assembly 2. The two side walls of the first clearance groove 211 on the first cover plate 21 can be elastically deformed to engage the shaft hole 2111 with the rotating shaft 122 of the second connecting part 12. It can be understood that the connection between the first cover plate 21 and the second connecting part 12 can also be such that the shaft hole is opened on both sides of the second connecting part 12, and the rotating shaft is disposed on the two side walls of the first clearance groove 211. The two side walls of the first clearance groove 211 on the first cover plate 21 can be elastically deformed to engage the rotating shaft with the shaft hole of the second connecting part 12.

[0039] In one embodiment, the backrest assembly 2 further includes a second cover plate 22 connected to the first cover plate 21, the second cover plate 22 being detachable from the first cover plate 21.

[0040] In this embodiment, the second cover plate 22 is the front cover of the backrest assembly 2. The first cover plate 21 is provided with a barb structure. The second cover plate 22 is connected to the first cover plate 21 through the barb structure on the first cover plate 21. The second cover plate 22 can be disassembled and replaced at any time.

[0041] In one embodiment, the second cover plate 22 is provided with a second clearance groove so that the second cover plate 22 can avoid the arc segment 1211 when it rotates synchronously with the first cover plate 21.

[0042] In one embodiment, a plurality of second reinforcing ribs 212 are provided on the first cover plate 21 near the first clearance groove 211.

[0043] In this embodiment, by providing a second reinforcing rib 212 on the first cover plate 21, the strength and rigidity of the first cover plate 21 are improved, thereby preventing the first cover plate 21 from deforming or being damaged.

[0044] In one embodiment, a plurality of third reinforcing ribs 13 are arranged side by side at the connection between the first connecting portion 11 and the second connecting portion 12.

[0045] In this embodiment, by providing a third reinforcing rib 13 at the connection between the first connecting portion 11 and the second connecting portion 12, the strength and rigidity of the backrest support 1 are improved, thereby preventing deformation or damage to the backrest support 1. Preferably, the third reinforcing rib 13, the first connecting portion 11, and the second connecting portion 12 are integrally formed structures.

[0046] This disclosure also provides a mobility scooter equipped with a foldable seat back mechanism as described in any of the above-described embodiments.

[0047] In this embodiment, the mobility scooter is equipped with a foldable seat back mechanism, which includes a backrest support 1 and a backrest assembly 2. The backrest assembly 2 can rotate relative to the backrest support 1 around a rotation center, so that the foldable seat back mechanism can be folded inward after use and flattened, greatly improving the space utilization rate. In addition, since the backrest support 1 has a support part, it can be supported by the support part when the backrest assembly 2 is in the unfolded position, preventing the backrest assembly 2 from tipping backward and improving the stability of the overall structure.

[0048] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0049] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," and "above" are used herein to describe the spatial positional relationship between one or more components or features shown in the figures and other components or features. It should be understood that spatial relative terms include not only the orientation of the component as depicted in the figures but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0051] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in sequences other than those illustrated or described herein.

[0052] This disclosure has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this disclosure to the described embodiments. Furthermore, those skilled in the art will understand that this disclosure is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this disclosure, all of which fall within the scope of protection claimed by this disclosure. The scope of protection of this disclosure is defined by the appended claims and their equivalents.

Claims

1. A foldable seat back mechanism, characterized in that, include: A backrest bracket (1) has a support portion, and one end of the backrest bracket (1) away from the support portion is fixedly connected to the seat (3); as well as The backrest assembly (2) is rotatably connected to the backrest bracket (1) and is able to rotate relative to the backrest bracket (1) about a rotation center; The backrest assembly (2) has a folded position and an unfolded position relative to the backrest bracket (1). When the backrest assembly (2) is in the folded position, the backrest assembly (2) is fastened to the seat (3). When the backrest assembly (2) is in the unfolded position, the backrest assembly (2) is supported by the support part.

2. The foldable seat back mechanism according to claim 1, characterized in that, The backrest support (1) includes a first connecting part (11) connected to the seat (3) and a second connecting part (12) rotatably connected to the backrest assembly (2). The first connecting part (11) and the second connecting part (12) are connected and an angle is formed between the first connecting part (11) and the second connecting part (12). The support part is formed on the second connecting part (12).

3. The foldable seat back mechanism according to claim 2, characterized in that, The support includes a plurality of first reinforcing ribs (121) arranged side by side. Each first reinforcing rib (121) includes an arc-shaped segment (1211) and a bearing segment (1212). When the backrest assembly (2) is in the unfolded position, the backrest assembly (2) is supported on the bearing segment (1212).

4. The foldable seat back mechanism according to claim 3, characterized in that, The backrest assembly (2) includes a first cover plate (21) rotatably connected to the second connecting part (12). The first cover plate (21) is provided with a first clearance groove (211) so that the first cover plate (21) can avoid the arc segment (1211) when rotating.

5. The foldable seat back mechanism according to claim 4, characterized in that, The first clearance groove (211) has shaft holes (2111) on both sides, and the second connecting part (12) has rotating shafts (122) on both sides. The two shaft holes (2111) are respectively engaged on the two rotating shafts (122).

6. The foldable seat back mechanism according to claim 4, characterized in that, The backrest assembly (2) further includes a second cover plate (22) connected to the first cover plate (21), the second cover plate (22) being detachable from the first cover plate (21).

7. The foldable seat back mechanism according to claim 6, characterized in that, The second cover plate (22) is provided with a second clearance groove so that the second cover plate (22) can avoid the arc segment (1211) when it rotates synchronously with the first cover plate (21).

8. The foldable seat back mechanism according to claim 4, characterized in that, A plurality of second reinforcing ribs (212) are provided on the first cover plate (21) near the first clearance groove (211).

9. The foldable seat back mechanism according to claim 2, characterized in that, Multiple third reinforcing ribs (13) are arranged side by side at the connection between the first connecting part (11) and the second connecting part (12).

10. A mobility scooter, characterized in that, The mobility scooter is equipped with a foldable seat back mechanism as described in any one of claims 1-9.

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