1. A seat cushion, comprising:

the folding frame is formed by rotationally connecting a plurality of folding sub-pieces and has a folding state and an unfolding state;

the bottom of the folding frame is connected with the fixing part;

the top of the folding frame is rotationally connected with the cushion part;

wherein, when the folding frame is in the folded state, the fixing part is positioned above the cushion part, and the plurality of folding sub-parts are mutually folded and positioned between the fixing part and the cushion part; when the folding frame is in the unfolding state, a plurality of folding sub-pieces are unfolded and form a frame structure with a containing cavity.

2. The cushion according to claim 1, wherein said folding frame comprises two folding plates, one end of each of said two folding plates is rotatably connected to both sides of said fixed portion; the two folding plates are connected through an adjusting connecting rod.

3. A seat cushion according to claim 2, wherein a plurality of said folding sub-members are connected end to end in sequence to form said folding plate.

4. A seat cushion according to claim 3, wherein said folding sub-member has a first insert rod at one end and a socket hole at the other end for inserting said first insert rod.

5. A seat cushion according to claim 4, wherein said adjustment link is provided with a first adjustment slot, said first adjustment slot being provided with a plurality of first positioning protrusions at intervals along the length direction for catching said first insertion rod.

6. A seat cushion according to claim 2, wherein the ends of the two folding plates remote from the fixed portion are connected by a connecting rod assembly; the connecting rod assembly comprises a first connecting rod and a second connecting rod; one end of the first connecting rod is rotatably connected with one of the folding plates, and the other end of the first connecting rod is provided with a second inserted rod; one end of the second connecting rod is rotatably connected with the other folding plate, a second adjusting groove is formed in the other end of the second connecting rod, and a plurality of second positioning convex holes used for clamping the second inserting rod are formed in the second adjusting groove at intervals along the length direction.

7. A seat cushion according to claim 6, wherein said seat cushion portion comprises two seat cushion plates, said two seat cushion plates are connected with said two folding plates in a one-to-one correspondence, one end of said seat cushion plate is rotatably connected with one end of said folding plate where said link assembly is located, said seat cushion plate is further provided with a hook for cooperating with said link assembly.

8. A seat cushion according to claim 7, wherein said cushion plate comprises two side strips and a plurality of load bearing members, said plurality of load bearing members being juxtaposed between said two side strips.

9. A seat cushion according to claim 1, wherein said fixing portion comprises a fixing base plate and a plurality of fixing hooks, said plurality of fixing hooks being provided on a side of said fixing base plate remote from said seat cushion portion.

10. A bicycle, characterised in that the bicycle is provided with a rear seat provided with a seat cushion as claimed in any one of claims 1 to 9.

Background

The bicycle is a common transportation tool for people. A rear seat is arranged above a rear wheel of the bicycle, and a cushion is placed on the rear seat, so that the bicycle can carry people on the rear seat. However, when the article is to be placed on the rear seat, the article is difficult to be placed on the rear seat if the article is not tied to the seat cushion and fixed by using the rope.

Disclosure of Invention

The present invention is directed to at least one of the problems of the prior art, and provides a seat cushion and a bicycle.

The technical scheme adopted by the invention for solving the problems is as follows:

in a first aspect of the present invention, a seat cushion comprises:

the folding frame is formed by rotationally connecting a plurality of folding sub-pieces and has a folding state and an unfolding state;

the bottom of the folding frame is connected with the fixing part;

the top of the folding frame is rotationally connected with the cushion part;

wherein, when the folding frame is in the folded state, the fixing part is positioned above the cushion part, and the plurality of folding sub-parts are mutually folded and positioned between the fixing part and the cushion part; when the folding frame is in the unfolding state, a plurality of folding sub-pieces are unfolded and form a frame structure with a containing cavity.

According to the first aspect of the present invention, the folding leg includes two folding plates, and one ends of the two folding plates are respectively rotatably connected to both sides of the fixing portion; the two folding plates are connected through an adjusting connecting rod.

According to a first aspect of the invention, the folding plate comprises a plurality of folding sub-pieces, which are connected end to end in sequence.

According to the first aspect of the present invention, one end of the folding sub-member is provided with a first insertion rod, and the other end is provided with an insertion hole into which the first insertion rod is inserted.

According to the first aspect of the present invention, the adjusting link is provided with a first adjusting groove, and the first adjusting groove is provided with a plurality of first positioning convex holes at intervals along the length direction for clamping the first insert rod.

According to the first aspect of the invention, one ends of the two folding plates far away from the fixing part are connected through a connecting rod assembly; the connecting rod assembly comprises a first connecting rod and a second connecting rod; one end of the first connecting rod is rotatably connected with one of the folding plates, and the other end of the first connecting rod is provided with a second inserted rod; one end of the second connecting rod is rotatably connected with the other folding plate, a second adjusting groove is formed in the other end of the second connecting rod, and a plurality of second positioning convex holes used for clamping the second inserting rod are formed in the second adjusting groove at intervals along the length direction.

According to the first aspect of the invention, the seat cushion portion comprises two seat cushion plates, the two seat cushion plates are connected with the two folding plates in a one-to-one correspondence manner, one end of each seat cushion plate is rotatably connected with one end of each folding plate, which is provided with the connecting rod assembly, and the seat cushion plate is further provided with a hook used for being matched with the connecting rod assembly.

According to a first aspect of the invention, the cushion plate comprises two side strips and a plurality of load bearing members, the plurality of load bearing members being juxtaposed between the two side strips.

According to the first aspect of the present invention, the fixing portion includes a fixing base plate and a plurality of fixing hooks, and the plurality of fixing hooks are provided on a surface of the fixing base plate away from the seat cushion portion.

In a second aspect of the invention, a bicycle is provided with a rear seat provided with a seat cushion as set forth in the first aspect of the invention.

The scheme at least has the following beneficial effects: when the back seat of bicycle needs manned, convert folding leg into fold condition, a plurality of folding sub-spare are folding each other and are located between fixed part and the cushion portion, form low cushion structure, the people of being convenient for sit in cushion portion. When the backseat of bicycle need put the thing, convert the folding leg into the state of expanding, a plurality of folding sub-parts expand and form and have the frame construction who holds the chamber, are convenient for place the object and hold in the chamber. The cushion has multiple functions and wider application.

Additional aspects and advantages of the 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.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a view of a seat cushion according to an embodiment of the present invention in an unfolded state;

fig. 2 is a structural view of a seat cushion according to an embodiment of the present invention in a folded state.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 and 2, an embodiment of a first aspect of the present invention provides a seat cushion.

The seat cushion includes a folding leg 200, a fixing portion 100, and a seat cushion portion 300.

Wherein, the folding frame 200 is formed by rotatably connecting a plurality of folding sub-pieces 211, and the folding frame 200 has a folding state and an unfolding state; the bottom of the folding leg 200 is connected with the fixing part 100; the top of the folding frame 200 is rotatably connected with the cushion part 300; when the folding frame 200 is in the folded state, the fixing portion 100 is located above the cushion portion 300, and the plurality of folding sub-members 211 are folded with each other and located between the fixing portion 100 and the cushion portion 300; when the folding stand 200 is in the unfolded state, the plurality of folding sub-members 211 are unfolded and form a frame structure having a receiving cavity 510.

In this embodiment, the seat cushion can be applied to a bicycle or an electric bicycle; the seat cushion is fixed to a rear seat of the bicycle or the electric bicycle by a fixing portion 100. When the backseat of the bicycle needs to carry a person, the folding frame 200 is converted into a folding state, and the folding sub-members 211 are mutually folded and are positioned between the fixing part 100 and the cushion part 300, so that a low cushion structure is formed, and the person can conveniently sit on the cushion part 300. When the article is needed to be placed on the backseat of the bicycle, the folding frame 200 is converted into the unfolding state, and the plurality of folding sub-members 211 are unfolded to form a frame structure with the accommodating cavity 510, so that the article can be conveniently placed in the accommodating cavity 510. The cushion has multiple functions and wider application.

In some embodiments of the first aspect of the present invention, the folding leg 200 includes two folding plates 210, and one ends of the two folding plates 210 are respectively rotatably connected to two sides of the fixing portion 100; the two folding plates 210 are connected by an adjusting link 220.

In this embodiment, when the folding leg 200 is in the folded state, the two folding plates 210 are folded inward between the fixed portion 100 and the seat cushion portion 300, the adjusting links 220 are also located between the fixed portion 100 and the seat cushion portion 300, and the plurality of adjusting links 220 are closer in the folded state than in the unfolded state. When the folding leg 200 is in the unfolded state, the fixing portion 100 becomes the bottom of the frame, the two folding plates 210 are unfolded to two opposite sides of the frame, and the plurality of adjusting links 220 connected between the two folding plates 210 form the other two opposite sides of the frame, the seat cushion is unfolded to have a frame structure having the receiving chamber 510.

In certain embodiments of the first aspect of the present invention, the folding plate 210 comprises a plurality of folding sub-members 211 connected end to end in sequence.

It should be noted that the head end of the first folding sub-element 211 is not connected to the tail end of the last folding sub-element 211.

In this embodiment, when the end-to-end connected folding sub-pieces 211 are folded, the previous folding sub-piece 211 is folded in half with the next folding sub-piece 211, the previous folding sub-piece 211 is folded over the next folding sub-piece 211, and the previous folding sub-piece 211 is substantially coincident with the next folding sub-piece 211. When the end-to-end connected folding sub-elements 211 are unfolded, the folding sub-elements 211 are arranged in a row.

In addition, the width of the folding sub-member 211 should be less than half of the width of the fixing portion 100 and the seat cushion portion 300, so that when the plurality of folding sub-members 211 are folded in half, one folding plate 210 is prevented from being caught by the other folding plate 210.

It should be noted that, for the other two opposite sides of the frame formed by the adjusting links 220, when the folding leg 200 is in the unfolded state, the distance between the two adjacent adjusting links 220 depends on the height of the folding sub-member 211. If the distance between the two adjustment links 220 is large, a bag can be placed in the accommodating chamber 510, and the object in the accommodating chamber 510 is prevented from falling through the gap between the adjustment links 220.

In some embodiments of the first aspect of the present invention, one end of the folding sub-member 211 is provided with a first insertion rod 212, and the other end is provided with an insertion hole for inserting the first insertion rod 212.

In this embodiment, for two adjacent folding sub-pieces 211, the insertion rod of the next folding sub-piece 211 is inserted into the insertion hole of the previous folding sub-piece 211, thereby connecting the two folding sub-pieces 211 together.

In addition, the end of the first plunger 212 is provided with a cap for positioning the first plunger 212 and preventing the two folding sub-members 211 from being separated from each other.

In some embodiments of the first aspect of the present invention, the adjusting link 220 is provided with a first adjusting groove 221, and the first adjusting groove 221 is provided with a plurality of first positioning protrusions 222 at intervals along a length direction thereof for catching the first insert rod 212.

Specifically, the first positioning protrusion hole 222 protrudes above the first adjustment groove 221.

It should be noted that, an adjusting link 220 is disposed between each two opposite first inserting rods 212 for connection, so that the frame structure is more stable in the unfolded state of the seat cushion.

In this embodiment, when the folding leg 200 is in the folded state, the first insertion rods 212 of the two folding sub-members 211 slide along the first adjustment grooves 221 toward the inner side of the first adjustment grooves 221 until the two folding sub-members 211 are folded in half. When the folding frame 200 is in the unfolded state, the first inserting rods 212 of the two folding sub-members 211 slide along the first adjusting grooves 221 toward the outer sides of the first adjusting grooves 221, the width of the accommodating cavity 510 is determined by the distance between the first inserting rods 212 of the two folding sub-members 211, and the first inserting rods 212 are clamped into the first positioning convex holes 222 to fix the folding sub-members 211. Meanwhile, the rod cap prevents the first plunger 212 from being separated from the first positioning protrusion hole 222, that is, the folding sub-member 211 from being separated from the adjusting link 220.

In some embodiments of the first aspect of the present invention, the ends of the two folding plates 210 far away from the fixing portion 100 are connected by a connecting rod assembly 400; the linkage assembly 400 includes a first linkage 410 and a second linkage 420; one end of the first connecting rod 410 is rotatably connected with one of the folding plates 210, and the other end of the first connecting rod 410 is provided with a second inserting rod 411; one end of the second link 420 is rotatably connected to the other folding plate 210, the other end of the second link 420 is provided with a second adjusting slot 421, and the second adjusting slot 421 is provided with a plurality of second positioning convex holes 422 at intervals along the length direction for locking the second insertion rod 411.

In this embodiment, the end of the two folding plates 210 away from the fixing portion 100 is the opening 520 of the accommodating chamber 510 of the frame, and the object is placed in the accommodating chamber 510 through the opening 520. The distance between the upper ends of the two folding plates 210 can be adjusted by adjusting the assembly of the link 220. When the second rod 411 slides along the second adjusting groove 421 to the inner side of the second adjusting groove 421, the cavity opening 520 becomes smaller; when the second rod 411 slides along the second adjustment groove 421 to the outside of the second adjustment groove 421, the cavity opening 520 becomes larger. The second insertion rod 411 is inserted into the second positioning protrusion hole 422 to fix the first link 410 and the second link 420.

Likewise, the end of the second plunger 411 is further provided with a cap for positioning the second plunger 411 and preventing the first link 410 and the second link 420 from being separated from each other.

In some embodiments of the first aspect of the present invention, the cushion part 300 includes two cushion plates 310, the two cushion plates 310 are connected to the two folding plates 210 in a one-to-one correspondence, one end of the cushion plate 310 is rotatably connected to one end of the folding plate 210 where the link assembly 400 is disposed, and the cushion plate 310 is further provided with a hook 320 for cooperating with the link assembly 400.

In this embodiment, when the seat cushion is folded and used for a seat cushion purpose, the adjusting link 220 is adjusted to make the two seat cushions 310 abut, and the seat cushions 310 are hung on the link assembly 400 by the hooks 320 to be fixed; when the cushion is deployed and used for a frame purpose, the adjustment link 220 is adjusted to separate the two cushion plates 310, forming a cavity 520 between the two cushion plates 310. It is of course also possible to rotate the two cushion plates 310 such that the two cushion plates 310 no longer cover the folding leg 200 but are located on the sides such that the opening 520 is wide.

In certain embodiments of the first aspect of the present invention, the cushion plate 310 comprises two side bars 311 and a plurality of load bearing members 312, wherein the plurality of load bearing members 312 are juxtaposed between the two side bars 311. In particular, the bearing member 312 is a spring, one end of which is connected to one of the side bars 311 and the other end of which is connected to the other side bar 311.

In some embodiments of the first aspect of the present invention, the fixing part 100 includes a fixing base plate 110 and a plurality of fixing hooks 120, and the plurality of fixing hooks 120 are disposed on a side of the fixing base plate 110 away from the cushion part 300. The rear seat is hooked by the fixing hook 120, and the seat cushion is fixed to the rear seat of the bicycle.

In an embodiment of a second aspect of the invention, there is provided a bicycle provided with a rear seat provided with a seat cushion as in an embodiment of the first aspect of the invention.

In this embodiment, when the rear seat of the bicycle needs to carry a person, the folding frame 200 is converted into the folded state, and the plurality of folding sub-members 211 are folded with each other and located between the fixing portion 100 and the seat cushion portion 300, so as to form a low seat cushion structure, which is convenient for the person to sit on the seat cushion portion 300. When the article is needed to be placed on the backseat of the bicycle, the folding frame 200 is converted into the unfolding state, and the plurality of folding sub-members 211 are unfolded to form a frame structure with the accommodating cavity 510, so that the article can be conveniently placed in the accommodating cavity 510. The cushion has multiple functions and wider application.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the present invention shall fall within the protection scope of the present invention as long as the technical effects of the present invention are achieved by the same means.