A foldable chair cushion

Abstract

A foldable chair cushion comprises a chair cushion mechanism and a connecting mechanism. The chair cushion mechanism comprises a seat cushion unit and a backrest unit in the form of plates that can be placed against each other along a transverse fold line. The connecting mechanism comprises a first loop cord and a second loop cord that extend through the transverse fold line and are flexibly arranged in a ring shape between the seat cushion unit and the backrest unit. The first loop cord and the second loop cord can be stretched by the seat cushion unit and the backrest unit that are relatively spread apart along the transverse fold line, and cooperate to position the seat cushion unit and the backrest unit in an expanded state in which they are sandwiched at a predetermined angle. Since the first loop cord and the second loop cord are lightweight, easy to install, and rust-resistant, the foldable chair cushion has the advantages of being easy to store, easy to carry, and not easily damaged by rust.

Description

Technical Field

[0001] The present invention relates to the technical field of chair cushions, in particular to a foldable chair cushion. Background Art

[0002] A conventional foldable seat cushion comprises a plurality of panels arranged to lie against each other along a fold line and a plurality of hinges connecting the panels. The panels of the foldable seat cushion can be swung and unfolded relative to the fold line by the hinges, and then positioned against each other at a specific angle in an unfolded state. The foldable seat cushion can be driven to fold the panels along the fold line, thereby transforming from an unfolded state to a folded state.

[0003] However, because the hinges are made of metal, they significantly increase the weight of the foldable seat cushion, making it difficult to carry. Furthermore, if used outdoors or in wet areas, such as on grass, the hinges can easily rust, shortening the lifespan of the foldable seat cushion. Currently, no effective solutions have been proposed to address these technical issues. Summary of the Invention

[0004] In view of the problems in the related art, the present invention provides a foldable chair cushion to overcome the above technical problems existing in the existing related art.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a foldable chair cushion, characterized in that it comprises: a chair cushion mechanism, including a seat cushion unit and a backrest unit in the form of plates that can be placed side by side along a horizontal folding line;

[0006] and a connecting mechanism comprising a first loop cord and a second loop cord extending through the transverse fold line and flexibly disposed in loops between the seat cushion unit and the backrest unit, the first loop cord being spaced apart around the periphery of the second loop cord, and the first loop cord and the second loop cord being capable of being stretched by the seat cushion unit and the backrest unit being relatively swung apart along the transverse fold line, thereby cooperating to position the seat cushion unit and the backrest unit in an expanded state in which they are arranged at a predetermined angle;

[0007] The seat cushion unit has two seat cushion plates that are side by side along a first longitudinal folding line that intersects the transverse folding line. The backrest unit has two backrest plates that are side by side along the first longitudinal folding line. The first loop rope and the second loop rope are extended on the seat cushion plate and the backrest plate, and extend through the first longitudinal folding line, so that the seat cushion mechanism can be folded and changed along the transverse folding line and the first longitudinal folding line, and change from an expanded state to a folded state in which the seat cushion plate and the backrest plate are stacked, or the seat cushion mechanism also includes a first longitudinal folding line that intersects the transverse folding line and is spaced apart from each other. line and a second longitudinal folding line, the backrest unit has three backrest panels that are side by side along the first longitudinal folding line and the second longitudinal folding line, the cushion unit has three cushion panels that are side by side along the first longitudinal folding line and the second longitudinal folding line, the first loop rope and the second loop rope are extended on the cushion panels and the backrest panels, and extend through the first longitudinal folding line and the second longitudinal folding line, so that the cushion mechanism can be folded and changed along the transverse folding line, the first longitudinal folding line, and the second longitudinal folding line, and change from an expanded state to a folded state in which the cushion panels and the backrest panels are stacked.

[0008] In a preferred embodiment of the present invention, the first loop rope has two handrails that are stretched and exposed on one side of the seat cushion unit and the backrest unit for sitting when the seat cushion mechanism is in the unfolded state.

[0009] In a preferred embodiment of the present invention, the chair cushion mechanism also includes two armrest units respectively leaning against the left side and right side of the seat cushion unit and the backrest unit, each armrest unit having two armrest plates leaning against each other along a transverse folding line, the first loop rope and the second loop rope are extended in the seat cushion unit, the backrest unit and the armrest unit, and will be stretched when the chair cushion mechanism changes from a folded state to an unfolded state, thereby linking the seat cushion unit, the backrest unit and the armrest units to swing relative to each other from the overlapping state and unfold, so that the seat cushion plates, the backrest plates and the armrest plates lean against each other at a specific angle.

[0010] In a preferred embodiment of the present invention, the chair cushion mechanism further includes a first annular groove and a second annular groove recessed in the seat cushion unit, the backrest unit and the armrest unit, and respectively used for embedding and positioning the first loop rope and the second loop rope.

[0011] In a preferred embodiment of the present invention, the first annular groove has a plurality of first sub-grooves respectively formed on the chair backboard, the seat cushion plate and the armrest plate and connected to each other, and the second annular groove has a plurality of second sub-grooves respectively formed on the chair backboard, the seat cushion plate and the armrest plate and connected to each other, and the connecting mechanism also includes a plurality of sleeves arranged in the first sub-grooves and the second sub-grooves, and for the first ring rope and the second ring rope to pass through respectively.

[0012] In a preferred embodiment of the present invention, the chair cushion mechanism further comprises two armrest tube assemblies respectively sleeved on the outside of the armrest means and supported between the seat cushion unit and the chair back unit, and each armrest tube assembly comprises a plurality of armrest tubes detachably assembled in sequence.

[0013] In a preferred embodiment of the present invention, the chair cushion mechanism also includes four linear grooves respectively recessed in the seat cushion plate and the backrest plate and extending left and right, and an annular groove recessed in the seat cushion plate and the backrest plate. The linear grooves are arranged on the periphery of the annular groove, and the linear grooves located on the seat cushion plate are connected to each other, and the linear grooves located on the backrest plate are connected to each other. The first ring rope also has two embedded sections spaced apart up and down and embedded in the linear grooves. Each embedded section is connected to the support means at its two ends, and the second ring rope is embedded in the annular groove.

[0014] In a preferred embodiment of the present invention, the annular groove has four sub-grooves that are interconnected and formed respectively on the seat cushion plate and the backrest plate, and the connecting mechanism also includes a plurality of sleeves arranged in the equal linear grooves and the equal sub-grooves and for the first ring rope and the second ring rope to pass through respectively.

[0015] Compared to the prior art, the present invention offers the following advantages: By providing the first and second loop cords of the connecting mechanism, the seat cushion mechanism can be relatively swung along the transverse fold line to expand or fold. Because the first and second loop cords are lightweight, easy to install, and rust-resistant, the foldable seat cushion is convenient to store, easy to carry, and resistant to rust and damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the accompanying drawings, in which:

[0017] Figure 1 is a perspective view illustrating a first embodiment of a foldable chair cushion of the present invention in an unfolded state;

[0018] Figure 2 is a perspective view illustrating the first embodiment folded in half along a first longitudinal fold line;

[0019] Figure 3 is a perspective view illustrating the first embodiment in a folded state;

[0020] Figure 4 is a perspective view illustrating a second embodiment of the foldable chair cushion of the present invention in an unfolded state;

[0021] Figure 5 is a perspective view illustrating the second embodiment in a folded state;

[0022] Figure 6is a perspective view illustrating a third embodiment of the foldable chair cushion of the present invention; and

[0023] Figure 7 This is a perspective exploded view illustrating a handrail tube assembly according to a third embodiment.

[0024] In the accompanying drawings: 1. foldable seat cushion; 2. seat cushion mechanism; 21. seat cushion unit; 211. seat cushion plate; 22. backrest unit; 221. backrest plate; 23. armrest unit; 231. armrest plate; 232. armrest tube assembly; 233. armrest tube; 234. connector; 30. riding space; 401. first annular groove; 402. second annular groove; 403. first sub-groove; 404. second sub-groove; 405. linear groove; 406. perforation; 407. annular groove; 408. sub-groove; 5. connecting mechanism; 51. first loop rope; 511. armrest means; 512. embedded section; 52. second loop rope; 53. sleeve; L1. first longitudinal folding line; L2. transverse folding line; L3. second longitudinal folding line. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example

[0027] Before the present invention is described in detail, it should be noted that similar elements are denoted by the same reference numerals in the following description.

[0028] See Figures 1 to 3 The first embodiment of the foldable chair cushion 1 of the present invention includes a chair cushion mechanism 2 and a connecting mechanism 5.

[0029] The seat cushion mechanism 2 includes a seat cushion unit 21 and a backrest unit 22, each of which is plate-shaped and vertically aligned along a transverse fold line L2. The seat cushion unit 21 has two seat cushion panels 211 aligned horizontally along a first longitudinal fold line L1 intersecting the transverse fold line L2. The backrest unit 22 has two backrest panels 221 aligned horizontally along the first longitudinal fold line L1. Each armrest unit 23 has two armrest panels 231 aligned vertically along the transverse fold line L2. The seat cushion panels 211, backrest panels 221, and armrest panels 231 all have a plate-like appearance and possess a certain degree of rigidity.

[0030] The seat cushion mechanism 2 further includes a first annular groove 401 and a second annular groove 402 recessed on the same side of the seat cushion unit 21, the backrest unit 22, and the armrest unit 23. The first annular groove 401 includes a plurality of interconnected first sub-grooves 403 formed on the seat cushion plate 211, the backrest plate 221, and the armrest plate 231, respectively. The second annular groove 402 includes a plurality of interconnected second sub-grooves 404 formed on the seat cushion plate 211, the backrest plate 221, and the armrest plate 231, respectively.

[0031] The connecting mechanism 5 includes a first loop 51 and a second loop 52 flexibly disposed on the seat cushion unit 21, the backrest unit 22, and the armrest unit 23, and a plurality of sleeves 53 disposed in the first and second sub-grooves 403, 404. The first loops 51 are spaced apart from the second loops 52, and the first and second loops 51, 52 extend through the first longitudinal fold line L1 and the transverse fold line L2. The first loop 51 is inserted through the sleeves 53 in the first sub-grooves 403 and positioned within the first annular groove 401. The second loop 52 is inserted through the sleeves 53 in the second sub-grooves 404 and positioned within the second annular groove 402.

[0032] The seat cushion mechanism 2 can be driven to transition between an expanded state and a folded state. In the expanded state, the seat cushion unit 21, backrest unit 22, and armrest unit 23 are relatively extended along a first longitudinal fold line L1 and a transverse fold line L2. The rigid seat cushion plate 211, backrest plate 221, and armrest plate 231 are aligned with each other at a specific angle, thereby defining a seating space 30 on the side of the seat cushion mechanism 2 away from the first and second loop cords 51, 52. In the folded state, the seat cushion mechanism 2 is folded left and right along the first longitudinal fold line L1 and folded up and down along the transverse fold line L2.

[0033] When using the first embodiment of the present invention, the foldable seat cushion 1 in its folded state can be placed at a desired location, such as a flat surface or lawn. The seat cushion mechanism 2 is then flipped and unfolded along the transverse fold line L2, and then the seat cushion mechanism 2 is unfolded relative to the first longitudinal fold line L1. The first and second looped cords 51 and 52, supported by the seat cushion unit 21, the backrest unit 22, and the armrest unit 23, generate a restraining force that forces the rigid seat cushion panel 211, the backrest panel 221, and the armrest panel 231 to be closely aligned with each other at a specific angle, thereby maintaining the seat cushion mechanism 2 in its unfolded state and forming a seating space 30 for the user.

[0034] After use, the seat cushion mechanism 2 is first folded leftward and rightward along the first longitudinal folding line L1 and then folded upward and down along the transverse folding line L2 to bring the seat cushion mechanism 2 into the folded state.

[0035] The foldable chair cushion 1 of the first embodiment is first folded left and right along the first longitudinal folding line L1, and then folded up and down along the transverse folding line L2 to be in the folded state. However, in implementation, in other embodiments of the present invention, this is not limited to the above, and the folding order can be exchanged. The foldable chair cushion 1 can also be first folded up and down along the transverse folding line L2, and then folded left and right along the first longitudinal folding line L1 to be in the folded state.

[0036] The first annular groove 401 and the second annular groove 402 of the first embodiment are recessed on the side of the seat cushion unit 21, the backrest unit 22 and the armrest unit 23 opposite to the riding space 30. However, in implementation, in other embodiments of the present invention, this is not limited to the first annular groove 401 and the second annular groove 402 can also be recessed on the side of the seat cushion unit 21, the backrest unit 22 and the armrest unit 23 adjacent to the riding space 30.

[0037] The first loop rope 51 and the second loop rope 52 of the first embodiment are elastic ropes. However, in other embodiments of the present invention, this is not limited to the present invention. For example, the first loop rope 51 and the second loop rope 52 may also be drawstring ropes.

[0038] The chair cushion mechanism 2 of the first embodiment includes the armrest unit 23, but in implementation, in other embodiments of the present invention, the chair cushion mechanism 2 does not necessarily require the armrest unit 23. The chair cushion mechanism 2 may also only include a seat cushion unit 21 and a backrest unit 22, and the first loop rope 51 and the second loop rope 52 are embedded and positioned in the seat cushion unit 21 and the chair cushion unit.

[0039] See Figures 4-5 The structure of the second embodiment of the foldable chair cushion 1 of the present invention is substantially the same as that of the first embodiment, except for the number of the seat cushion plate 211 and the seat back plate 221 .

[0040] The seat cushion mechanism 2 also includes a second longitudinal fold line L3 spaced apart from the first longitudinal fold line L1 and intersecting the transverse fold line L2. The seat cushion unit 21 has three seat cushion panels 211 aligned along the first and second longitudinal fold lines L1 and L3. The backrest unit 22 has three backrest panels 221 aligned along the first and second longitudinal fold lines L1 and L3. The first and second loop cords 51 and 52 extend through the first longitudinal fold line L1, the transverse fold line L2, and the second longitudinal fold line L3, and are respectively embedded and positioned in the first and second annular grooves 401 and 402.

[0041] When the seat cushion mechanism 2 is in the folded state, the seat cushion mechanism 2 is folded up and down along the transverse folding line L2 and folded left and right along the first longitudinal folding line L1 and the second longitudinal folding line L3.

[0042] See Figures 6-7 The third embodiment of the foldable chair cushion 1 of the present invention differs from the first embodiment in that the first annular groove 401, the second annular groove 402, and the armrest plate 231 are not provided. For ease of description, only the differences between the third embodiment and the first embodiment will be described below.

[0043] The seat cushion mechanism 2 also includes four linear grooves 405 formed on the seat cushion plate 211 and the backrest plate 221 and extending left and right, four through-holes 406 extending through the seat cushion plate 211 and the backrest plate 221, and an annular groove 407 extending between the seat cushion plate 211 and the backrest plate 221. The linear grooves 405 are arranged around the periphery of the annular groove 407. The linear grooves 405 on the seat cushion plate 211 and the backrest plate 221 are interconnected, while the through-holes 406 are connected to the ends of the linear grooves 405 that are not connected to the other linear grooves 405. The annular groove 407 has four interconnected sub-grooves 408 formed on the seat cushion plate 211 and the backrest plate 221.

[0044] The sleeves 53 of the connecting mechanism 5 are positioned within the equal sub-grooves 408 of the equal linear grooves 405 and the equal annular grooves 407. The first loop cord 51 includes two vertically spaced insertion sections 512 that pass through the sleeves 53 located within the equal linear grooves 405 and are embedded and positioned within the equal linear grooves 405. Two horizontally spaced support members 511 are connected to the left and right sides of the equal insertion sections 512, respectively. The ends of each support member 511 extend from the side of the seat cushion mechanism 2 adjacent to the seating space 30 through corresponding equal perforations 406, through the seat cushion unit 21 and the seat back unit 22, and then connect to the equal insertion sections 512 on the side of the seat cushion mechanism 2 opposite the seating space 30. The second loop cord 52 passes through the sleeves 53 located within the equal sub-grooves 408 and is fixedly embedded in the annular groove 407.

[0045] The armrest unit 23 includes two armrest tube assemblies 232 that are respectively connected to the outer periphery of the armrest member 511 and supported between the seat cushion unit 21 and the backrest unit 22. Each armrest tube assembly 232 includes multiple armrest tubes 233 and multiple connectors 234 connected between the armrest tubes 233. Because each connector 234 is shaped like a curved tube and is connected to a corresponding armrest tube 233, the armrest tubes 233 can be connected to each other at a specific angle to support the seat cushion unit 21 and the backrest unit 22.

[0046] The armrest unit 23 of this embodiment has an armrest tube assembly 232. However, in other embodiments of the present invention, it is not necessary to provide the armrest tube assembly 232. The armrest portion 511 of the first loop rope 51 can also be exposed on one side of the seat cushion mechanism 2 adjacent to the seating space 30.

[0047] In summary, by coordinating the connection mechanism 5 with the first annular groove 401 and the second annular groove 402, the seat cushion mechanism 2 can be relatively swung along the folding line to expand or fold. Since the seat cushion mechanism 2 is relatively compact in the folded state, it is convenient for the user to store and carry. Furthermore, the first and second loop cords 51, 52 embedded in the seat cushion mechanism 2 are lightweight, easy to install, and rust-resistant. Therefore, the foldable seat cushion 1 is lightweight, easy to store, easy to carry, and resistant to rust and damage, offering a foldable seat cushion 1 with multiple advantages.

[0048] However, the above is only an embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. All simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still within the scope of the patent of the present invention.

[0049] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating 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 present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A foldable chair cushion, characterized in that: It comprises: a chair cushion mechanism, comprising a seat cushion unit and a chair back unit in the form of plates that can be placed side by side along a transverse folding line; and a connecting mechanism comprising a first loop cord and a second loop cord extending through the transverse fold line and flexibly disposed in loops between the seat cushion unit and the backrest unit, the first loop cord being spaced apart around the periphery of the second loop cord, and the first loop cord and the second loop cord being capable of being stretched by the seat cushion unit and the backrest unit being relatively swung apart along the transverse fold line, thereby cooperating to position the seat cushion unit and the backrest unit in an expanded state in which they are arranged at a predetermined angle; The seat cushion unit has two seat cushion plates that are side by side along a first longitudinal folding line that intersects the transverse folding line. The backrest unit has two backrest plates that are side by side along the first longitudinal folding line. The first loop rope and the second loop rope are extended on the seat cushion plate and the backrest plate, and extend through the first longitudinal folding line, so that the seat cushion mechanism can be folded and changed along the transverse folding line and the first longitudinal folding line, and change from an expanded state to a folded state in which the seat cushion plate and the backrest plate are stacked, or the seat cushion mechanism also includes a first longitudinal folding line that intersects the transverse folding line and is spaced apart from each other. line and a second longitudinal folding line, the backrest unit has three backrest panels that are side by side along the first longitudinal folding line and the second longitudinal folding line, the cushion unit has three cushion panels that are side by side along the first longitudinal folding line and the second longitudinal folding line, the first loop rope and the second loop rope are extended on the cushion panels and the backrest panels, and extend through the first longitudinal folding line and the second longitudinal folding line, so that the cushion mechanism can be folded and changed along the transverse folding line, the first longitudinal folding line, and the second longitudinal folding line, and change from an expanded state to a folded state in which the cushion panels and the backrest panels are stacked.

2. The foldable chair cushion according to claim 1, characterized in that: The first loop rope has two handrails which are stretched and supported to be exposed on one side of the seat cushion unit and the chair back unit at intervals when the seat cushion mechanism is in the unfolded state.

3. The foldable chair cushion according to claim 1, characterized in that: The chair cushion mechanism also includes two armrest units respectively leaning against the left and right sides of the seat cushion unit and the backrest unit. Each armrest unit has two armrest plates leaning against each other along a transverse folding line. The first loop rope and the second loop rope are extended in the seat cushion unit, the backrest unit and the armrest unit, and will be stretched when the seat cushion mechanism changes from a folded state to an unfolded state, thereby linking the seat cushion unit, the backrest unit and the armrest units to swing relative to each other from the overlapping state and unfold, so that the seat cushion plates, the backrest plates and the armrest plates lean against each other at a specific angle.

4. The foldable chair cushion according to claim 3, characterized in that: The chair cushion mechanism further comprises a first annular groove and a second annular groove which are recessed in the seat cushion unit, the chair back unit and the armrest unit and are used for embedding and positioning the first loop rope and the second loop rope respectively.

5. The foldable chair cushion according to claim 4, characterized in that: The first annular groove has a plurality of first sub-grooves respectively formed on the chair back plate, the seat cushion plate and the armrest plate and connected to each other. The second annular groove has a plurality of second sub-grooves respectively formed on the chair back plate, the seat cushion plate and the armrest plate and connected to each other. The connecting mechanism also includes a plurality of sleeves arranged in the first sub-grooves and the second sub-grooves, and respectively for the first ring rope and the second ring rope to pass through.

6. The foldable chair cushion according to claim 2, characterized in that: The chair cushion mechanism also has two armrest tube assemblies which are respectively sleeved on the outside of the armrest means and supported between the seat cushion unit and the chair back unit. Each armrest tube assembly has a plurality of armrest tubes which are detachably assembled in sequence.

7. The foldable chair cushion according to claim 6, characterized in that: in, The chair cushion mechanism also includes four linear grooves respectively recessed in the seat cushion plate and the backrest plate and extending left and right, and an annular groove recessed in the seat cushion plate and the backrest plate. The linear grooves are arranged on the periphery of the annular groove, and the linear grooves located on the seat cushion plate are connected to each other, and the linear grooves located on the backrest plate are connected to each other. The first ring rope also has two embedded sections spaced up and down and embedded in the linear grooves. Each embedded section is connected to the support means at its two ends, and the second ring rope is embedded in the annular groove.

8. The foldable chair cushion according to claim 7, characterized in that: in, The annular groove has four sub-grooves that are interconnected and formed on the seat cushion plate and the backrest plate respectively. The connecting mechanism also includes a plurality of sleeves arranged in the equal linear grooves and the equal sub-grooves and respectively for the first ring rope and the second ring rope to pass through.

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