US20110084538A1 - Seat Frame For Folding Chair - Google Patents
Seat Frame For Folding Chair Download PDFInfo
- Publication number
- US20110084538A1 US20110084538A1 US12/577,725 US57772509A US2011084538A1 US 20110084538 A1 US20110084538 A1 US 20110084538A1 US 57772509 A US57772509 A US 57772509A US 2011084538 A1 US2011084538 A1 US 2011084538A1
- Authority
- US
- United States
- Prior art keywords
- frame
- support surface
- front frame
- seat cushion
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/02—Seat parts
- A47C7/18—Seat parts having foamed material included in cushioning part
- A47C7/185—Seat parts having foamed material included in cushioning part with a stiff, rigid support
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C4/00—Foldable, collapsible or dismountable chairs
- A47C4/02—Dismountable chairs
- A47C4/028—Upholstered chairs, e.g. metal, plastic or wooden chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C4/00—Foldable, collapsible or dismountable chairs
- A47C4/04—Folding chairs with inflexible seats
- A47C4/18—Folding chairs with inflexible seats having a frame made of metal
- A47C4/20—Folding chairs with inflexible seats having a frame made of metal with legs pivotably connected to seat or underframe
- A47C4/24—Folding chairs with inflexible seats having a frame made of metal with legs pivotably connected to seat or underframe with cross legs
Definitions
- the present invention generally relates to a seat frame for a folding chair, and more particularly to a folding chair having a seat cushion that is in horizontal contact with the seat frame, thereby distributing load uniformly and supporting high load.
- FIG. 4 illustrates a conventional folding chair having a padded seat cushion.
- the seat frame includes a front frame A and rear frame B.
- the front frame A has a U-shaped contour.
- a bottom end of the front frame A bends upward to form a curved recess that defines a first support edge A 1 having a same U-shaped contour as the front frame A.
- the rear frame B has a linear shape.
- a bottom end of the rear frame B bends upward to form a curved recess that defines a second support edge (its cross section is similar to that of the first support edge A 1 ) having a same linear contour as the rear frame B.
- the seat cushion C typically includes a base made of plastics, wood, or like rigid materials on which a sponge or like soft materials is laid and securely encapsulated in a leather layer.
- the seat cushion C is clamped between the first support edge A 1 and the second support edge.
- a fastener element D is then used for securing the front frame A, seat cushion C, and rear frame B together, whereby the seat cushion C is sandwiched therebetween.
- first support edge A 1 and the second support edge form a frame adapted for placement of the seat cushion C
- the contact between the first and second support edges and the seat cushion C is only a linear contact.
- the first and second support edges cannot provide the seat cushion C with a stable support.
- the seat cushion C is pressed downward, causing deformation of the two support edges in linear contact with the seat cushion C.
- the structure of the seat frame and its ability to provide support function may be adversely deteriorated.
- a primary objective of the present invention is to provide a seat frame for a folding chair that can solve the aforementioned problems by achieving a surface contact rather than linear contact between the seat cushion and the support edges. Stable support can thereby be provided for the seat cushion, which reinforces its support capability. In addition, the support edges under loading will not easily deform.
- a seat frame for a folding chair includes a U-shaped front frame, a linearly rear frame and a seat cushion.
- the U-shaped front frame has a first support surface between an upper surface and a lower surface of the front frame, wherein the first support surface has a U-shaped contour that is similar to that of the front frame.
- the rear frame has a horizontal second support surface between an upper surface and a lower surface of the rear frame, wherein the second support surface has a linear contour that is similar to that of the rear frame.
- the seat cushion is clamped between the first support surface and the second support surface in a horizontal position. L-shaped brackets are then used for securely fixing the front frame, the seat cushion and the rear frame together, wherein the seat cushion is surrounded by the front frame and the rear frame.
- the first support surface may be formed by providing two perpendicular bends from a bottom edge of the front frame.
- the second support surface is formed by the same way. Further, the first support surface has a round portion at each of two distal ends of the U-shaped front frame for facilitating insertion of the seat cushion into the U-shaped first support surface.
- the seat frame has the horizontal first and second support surfaces
- the seat cushion can be clamped and supported in a stable manner and the support load can be distributed uniformly on the two horizontal support surfaces.
- the support surfaces will not be subjected to deformation owing to the surface contact between the seat cushion and the support surface. Damages to the seat frame can therefore be prevented.
- FIG. 1 is a perspective view illustrating a folding chair having a seat frame according to an embodiment of the present invention
- FIG. 2 is an exploded view illustrating the folding chair of FIG. 1 ;
- FIG. 3 is a cross sectional view taken along line III-III shown in FIG. 1 ;
- FIG. 4 illustrates a folding chair having a conventional seat cushion.
- FIG. 1 is a perspective view illustrating a folding chair having a seat frame according to an embodiment of the present invention.
- the seat frame for the folding chair is used to hold a padded seat cushion 3 .
- This seat cushion 3 includes a base made of plastics, wood, or like rigid materials on which a sponge or like soft materials is disposed and securely encapsulated in a leather layer.
- the seat frame for the folding chair includes a U-shaped front frame 1 and a linear rear frame 2 .
- the contours of the front frame 1 and the rear frame 2 are corresponding to that of the seat cushion 3 .
- a cross section of the front frame 1 is the same as that of the rear frame 2 .
- the front frame 1 has an upper surface, a lower surface and a first support surface 11 located between the upper surface and the lower surface.
- the first support surface 11 is parallel to the upper surface and the lower surface of the front frame 1 , and has a U-shaped contour the same as that of the U-shaped front frame 1 .
- the rear frame 2 has a second support surface 21 located between and parallel to an upper and lower surface of the rear frame 2 .
- the second support surface 21 has a linear contour the same as that of the rear frame 2 .
- the lower surface of the front frame 1 is extended and bent vertically upward and vertically inward to form the first support surface 11 that is parallel to the upper and lower surface of the front frame 1 , thereby forming the G-shaped front frame 1 .
- the first support surface 11 is welded on to the front frame 1 and the first support surface 11 is parallel to the upper and lower surface of the front frame 1 , thereby forming the E-shaped front frame 1 (not shown in Figures).
- the rear frame 2 are in G shape or E shape as the front frame 1 .
- the first support surface 11 has a round portion 12 at each of two distal ends of the U-shaped front frame 1 .
- the two round portions 12 are used for guiding the insertion of the seat cushion 3 to a clamped position between the first support surface 11 and the upper surface of front frame 1 .
- Three of the peripheral edges of the bottom surface of the seat cushion 3 are thereby clamped horizontally on the first support surface 11 .
- the second support surface 21 of the rear frame 2 then clamps the fourth peripheral edge of the seat cushion 3 . Accordingly, the first support surface 11 and the second support surface 21 can maintain a same height to form a horizontal placement surface.
- Two L-shaped brackets 4 securely connect the front frame 1 with the rear frame 2 .
- a fastener member 5 then penetrate through one side of each of the two L-shaped brackets 4 for fixing the L-shaped bracket 4 , front frame 1 and seat cushion 3 together.
- the first support surface 11 and the second support surface 21 forms horizontal support surfaces.
- the seat cushion 3 can be clamped and supported in a stable manner and the support load can be distributed uniformly on the two support surfaces.
- the support surface may at most displace downward in a resilient manner owing to the contact surface between the seat cushion 3 and the support surface. Because the support surface is not easily subjected to deformation, damages to the seat frame can be advantageously prevented.
Abstract
Description
- 1. Field of the Invention
- The present invention generally relates to a seat frame for a folding chair, and more particularly to a folding chair having a seat cushion that is in horizontal contact with the seat frame, thereby distributing load uniformly and supporting high load.
- 2. The Prior Arts
-
FIG. 4 illustrates a conventional folding chair having a padded seat cushion. The seat frame includes a front frame A and rear frame B. The front frame A has a U-shaped contour. A bottom end of the front frame A bends upward to form a curved recess that defines a first support edge A1 having a same U-shaped contour as the front frame A. The rear frame B has a linear shape. A bottom end of the rear frame B bends upward to form a curved recess that defines a second support edge (its cross section is similar to that of the first support edge A1) having a same linear contour as the rear frame B. The seat cushion C typically includes a base made of plastics, wood, or like rigid materials on which a sponge or like soft materials is laid and securely encapsulated in a leather layer. The seat cushion C is clamped between the first support edge A1 and the second support edge. A fastener element D is then used for securing the front frame A, seat cushion C, and rear frame B together, whereby the seat cushion C is sandwiched therebetween. - While the first support edge A1 and the second support edge form a frame adapted for placement of the seat cushion C, the contact between the first and second support edges and the seat cushion C is only a linear contact. As a result, the first and second support edges cannot provide the seat cushion C with a stable support. In case the fastener element got loose and a user sits on the chair, the seat cushion C is pressed downward, causing deformation of the two support edges in linear contact with the seat cushion C. As a result, the structure of the seat frame and its ability to provide support function may be adversely deteriorated.
- A primary objective of the present invention is to provide a seat frame for a folding chair that can solve the aforementioned problems by achieving a surface contact rather than linear contact between the seat cushion and the support edges. Stable support can thereby be provided for the seat cushion, which reinforces its support capability. In addition, the support edges under loading will not easily deform.
- In order to achieve the objective mentioned above, a seat frame for a folding chair according to the present invention includes a U-shaped front frame, a linearly rear frame and a seat cushion. The U-shaped front frame has a first support surface between an upper surface and a lower surface of the front frame, wherein the first support surface has a U-shaped contour that is similar to that of the front frame. The rear frame has a horizontal second support surface between an upper surface and a lower surface of the rear frame, wherein the second support surface has a linear contour that is similar to that of the rear frame. The seat cushion is clamped between the first support surface and the second support surface in a horizontal position. L-shaped brackets are then used for securely fixing the front frame, the seat cushion and the rear frame together, wherein the seat cushion is surrounded by the front frame and the rear frame.
- The first support surface may be formed by providing two perpendicular bends from a bottom edge of the front frame. The second support surface is formed by the same way. Further, the first support surface has a round portion at each of two distal ends of the U-shaped front frame for facilitating insertion of the seat cushion into the U-shaped first support surface.
- Because the seat frame has the horizontal first and second support surfaces, the seat cushion can be clamped and supported in a stable manner and the support load can be distributed uniformly on the two horizontal support surfaces. Moreover, if the L-shaped brackets got loose and a user sits on the seat cushion, the support surfaces will not be subjected to deformation owing to the surface contact between the seat cushion and the support surface. Damages to the seat frame can therefore be prevented.
- The present invention will be apparent to those skilled in the art by reading the following detailed description of a preferred embodiment thereof, with reference to the attached drawings, in which:
-
FIG. 1 is a perspective view illustrating a folding chair having a seat frame according to an embodiment of the present invention; -
FIG. 2 is an exploded view illustrating the folding chair ofFIG. 1 ; -
FIG. 3 is a cross sectional view taken along line III-III shown inFIG. 1 ; and -
FIG. 4 illustrates a folding chair having a conventional seat cushion. -
FIG. 1 is a perspective view illustrating a folding chair having a seat frame according to an embodiment of the present invention. The seat frame for the folding chair is used to hold a paddedseat cushion 3. Thisseat cushion 3 includes a base made of plastics, wood, or like rigid materials on which a sponge or like soft materials is disposed and securely encapsulated in a leather layer. - Referring to
FIG. 2 , the seat frame for the folding chair according to the present invention includes a U-shapedfront frame 1 and a linearrear frame 2. The contours of thefront frame 1 and therear frame 2 are corresponding to that of theseat cushion 3. Referring toFIGS. 2 and 3 , a cross section of thefront frame 1 is the same as that of therear frame 2. Thefront frame 1 has an upper surface, a lower surface and afirst support surface 11 located between the upper surface and the lower surface. Thefirst support surface 11 is parallel to the upper surface and the lower surface of thefront frame 1, and has a U-shaped contour the same as that of the U-shapedfront frame 1. Similarly, therear frame 2 has asecond support surface 21 located between and parallel to an upper and lower surface of therear frame 2. Thesecond support surface 21 has a linear contour the same as that of therear frame 2. Referring toFIG. 3 , the lower surface of thefront frame 1 is extended and bent vertically upward and vertically inward to form thefirst support surface 11 that is parallel to the upper and lower surface of thefront frame 1, thereby forming the G-shapedfront frame 1. According to a second embodiment, thefirst support surface 11 is welded on to thefront frame 1 and thefirst support surface 11 is parallel to the upper and lower surface of thefront frame 1, thereby forming the E-shaped front frame 1 (not shown in Figures). Because the cross section of thefront frame 2 is the same as that of therear frame 1, therear frame 2 are in G shape or E shape as thefront frame 1. Further, thefirst support surface 11 has around portion 12 at each of two distal ends of the U-shapedfront frame 1. - For assembling the
seat cushion 3 with the seat frame, the tworound portions 12 are used for guiding the insertion of theseat cushion 3 to a clamped position between thefirst support surface 11 and the upper surface offront frame 1. Three of the peripheral edges of the bottom surface of theseat cushion 3 are thereby clamped horizontally on thefirst support surface 11. Thesecond support surface 21 of therear frame 2 then clamps the fourth peripheral edge of theseat cushion 3. Accordingly, thefirst support surface 11 and thesecond support surface 21 can maintain a same height to form a horizontal placement surface. Two L-shaped brackets 4 securely connect thefront frame 1 with therear frame 2. Afastener member 5 then penetrate through one side of each of the two L-shaped brackets 4 for fixing the L-shaped bracket 4,front frame 1 andseat cushion 3 together. - After the assembly of the
front frame 1 and therear frame 2, thefirst support surface 11 and thesecond support surface 21 forms horizontal support surfaces. Thus, theseat cushion 3 can be clamped and supported in a stable manner and the support load can be distributed uniformly on the two support surfaces. Moreover, if the L-shaped brackets 4 got loose and a user sits on theseat cushion 3, the support surface may at most displace downward in a resilient manner owing to the contact surface between theseat cushion 3 and the support surface. Because the support surface is not easily subjected to deformation, damages to the seat frame can be advantageously prevented. - Although the present invention has been described with reference to the preferred embodiment thereof, it is apparent to those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the present invention which is intended to be defined by the appended claims.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/577,725 US7934769B1 (en) | 2009-10-13 | 2009-10-13 | Seat frame for folding chair |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/577,725 US7934769B1 (en) | 2009-10-13 | 2009-10-13 | Seat frame for folding chair |
Publications (2)
Publication Number | Publication Date |
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US20110084538A1 true US20110084538A1 (en) | 2011-04-14 |
US7934769B1 US7934769B1 (en) | 2011-05-03 |
Family
ID=43854256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/577,725 Active US7934769B1 (en) | 2009-10-13 | 2009-10-13 | Seat frame for folding chair |
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Country | Link |
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US (1) | US7934769B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11140989B2 (en) * | 2016-09-23 | 2021-10-12 | Aichi Co., Ltd. | Chair and structure body thereof |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102406361A (en) * | 2011-10-13 | 2012-04-11 | 陈育 | Dual-purpose chair for cold and hot |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1600248A (en) * | 1925-05-13 | 1926-09-21 | Clarin Mfg Co | Folding chair |
US1740806A (en) * | 1928-04-05 | 1929-12-24 | Beacon Steel Furniture Co | Folding chair |
US1873768A (en) * | 1926-04-19 | 1932-08-23 | Stakmore Co Inc | Folding chair |
US1975622A (en) * | 1931-08-26 | 1934-10-02 | George D Schermerhorn | Chair seat |
-
2009
- 2009-10-13 US US12/577,725 patent/US7934769B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1600248A (en) * | 1925-05-13 | 1926-09-21 | Clarin Mfg Co | Folding chair |
US1873768A (en) * | 1926-04-19 | 1932-08-23 | Stakmore Co Inc | Folding chair |
US1740806A (en) * | 1928-04-05 | 1929-12-24 | Beacon Steel Furniture Co | Folding chair |
US1975622A (en) * | 1931-08-26 | 1934-10-02 | George D Schermerhorn | Chair seat |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11140989B2 (en) * | 2016-09-23 | 2021-10-12 | Aichi Co., Ltd. | Chair and structure body thereof |
Also Published As
Publication number | Publication date |
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US7934769B1 (en) | 2011-05-03 |
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