CN1931054A - Folding chair and its straight leg frame - Google Patents
Folding chair and its straight leg frame Download PDFInfo
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- CN1931054A CN1931054A CN 200510044708 CN200510044708A CN1931054A CN 1931054 A CN1931054 A CN 1931054A CN 200510044708 CN200510044708 CN 200510044708 CN 200510044708 A CN200510044708 A CN 200510044708A CN 1931054 A CN1931054 A CN 1931054A
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Abstract
The frame of straight leg type folding chair includes one transverse frame in the rectangular structure with four pivot jointing points; four chair legs parallel basically and pivoted separately to the four pivot jointing points. The four chair legs can rotate relatively to the transverse frame within the vertical plane in the backward-and-forward direction. The present invention realizes folding chair with straight legs and capable of being folded in only one step, and combines the advantages of both staggered form folding chair with convenient folding and straight leg chair with high fastness and durability.
Description
Technical field
The present invention relates to a kind of folding seat, be meant specifically that a kind of four chair legs all are in vertical direction and the folding seat framework and the folding seat that do not cross one another.
Background technology
Folding seat is one of furniture common in office space or the family, and the time spent can not make things convenient for folding storage to be used widely because of it.
The folding seat of prior art is generally the cross folding formula, its framework mostly comprises two chair leg supports and a seat carriage, the chair leg support of front side is longer, by the upside extension backward of preceding downside, form the bracing frame of backrest simultaneously, the length of the chair leg support of rear side is approximately half of front side chair leg support length, its top is connected with about medium position of the chair leg support of front side by two first connectors, the chair leg support of seat carriage both sides and front side is rotatably connected, and be connected with the chair leg support of rear side by two second connectors, the corresponding chair leg of two chair leg supports and the first corresponding connector, second connector forms folding quadric chain, thereby two chair leg supports and seat carriage are folded, when the framework of this folding seat struts, the chair leg support of rear side is supported in the below at the chair leg support middle part of front side, and seat carriage rear portion supported on both sides is on this two chairs leg support, and its front portion is then unsettled.The shortcoming of this folding seat is firm inadequately, because the seat front portion is unsettled, and two chair leg support discontinuity, hinge connection is stressed bigger, connects the hinge damage because of distortion makes easily.
The chair of straight leg formula has stressed even, firm and non-damageable advantage because of its four chair legs all are in vertical direction, and still, this kind chair can not fold usually.The applicant applied on December 15th, 2004, application number is 200410075470 patent of invention " a kind of collapsible chair frame and method for folding ", chair frame wherein is the chair frame of straight leg formula, its primary structure comprises crossing frame, be rotationally connected with foreleg framework and the back leg frame and a limit rotation mechanism of crossing frame front and back side, foreleg framework and back leg frame can be rolled in opposite directions and be against the crossing frame below, the limit rotation mechanism be a framework, its top margin is hubbed at the crossing frame middle part, the foreleg framework of this limit rotation mechanism when strutting, back leg frame is vertical, its base and foreleg framework, be provided with the fastener of working in coordination between the back leg frame, can when this chair frame struts, limit the foreleg framework, back leg frame rotates relative to crossing frame.In this scheme, four chair legs all are positioned at vertical direction, balancedly are supported in the crossing frame below, simultaneously can realize again folding, but it folds and expansion process comparatively bothers, and needs several steps just can finish, and does not meet the requirement of people to the folding seat ease of use.
Summary of the invention
The object of the present invention is to provide a kind of that can fold easily and launch and Stability Analysis of Structures, firm straight leg formula folding seat framework and folding seat.
The present invention adopts following technical scheme:
A kind of straight leg formula folding seat framework comprises: a crossing frame, and for having the rectangular configuration of four pivoting points, these four pivoting points are positioned on the limit or summit of this rectangular configuration; Four chair legs, four chair leg almost parallels or only to crossing one another are articulated in four pivoting points of this crossing frame at the position of sustained height, and four chair legs are limited in the perpendicular of fore-and-aft direction extension with respect to the rotation direction of this crossing frame.
Also comprise two hack levers in addition, its leading section articulates with two chair leg upper ends of front side respectively, its rear end portion articulates with the position, two chair leg middle and upper parts of rear side respectively, form folding quadric chain between the hack lever of the front and back two chair legs of above-mentioned the same side, correspondence and the respective side edge of crossing frame, this quadric chain forms the stopping means that limits its rotational angle at a pivoting point at least.
This crossing frame or two hack levers are used for fixing the seat of folding seat, and promptly seat can be fixed on this crossing frame, also can be fixed on two hack levers.
Aforementioned a kind of straight leg formula folding seat framework, wherein, the upper surface of two chair legs of described front side forms conflict face respectively, and contact at respectively below the two hack lever leading sections, and the below that corresponding preceding chair leg and the articulated section between the hack lever are positioned at the rear side and the hack lever of this preceding chair leg, in expansion process, when chair leg upper end low touched face and contacted at the hack lever below, this hinge can't continue to rotate to the direction of launching again, and the angle between two preceding chair legs and two hack levers is greater than 90 degree, under the user mode, preceding chair leg is supported on the ground, should also can't back rotate to folding direction by preceding chair leg, thus, preceding chair leg and hack lever can stably be in the user mode of expansion.
The concrete syndeton of this hack lever and preceding chair leg can have following several:
One, below, the forward end of described two hack levers is provided with the lug of downward extension, and described preceding chair leg upper end trailing flank is provided with the lug that extends back, and articulates mutually between the two corresponding lugs;
Two, below, the forward end of described two hack levers is provided with the lug of downward extension, two chair leg upper ends, described front side are provided with a pivot connected slot to lower recess by rear side, this lug is articulated in this pivot connected slot by a bearing pin, and the conflict face rear side of two chair leg upper ends of described front side forms the inclined-plane of stepping down;
Three, below, the forward end of described hack lever is provided with a PBU pushbutton unit, this PBU pushbutton unit comprises push-button socket, the spring that part convexedly stretches in the outer button of push-button socket and is located in the push-button socket and button is held out against outside push-button socket, corresponding preceding chair leg top forms the stairstepping that cooperates with this push-button socket, should before be provided with a positioning convex rod that can protrude out to the push-button socket direction in chair leg top, and be provided with the spring that this positioning convex rod is outwards protruded out, the relevant position of push-button socket is provided with a locating hole that supplies this positioning convex rod to penetrate, the end that the inner end of described button and this positioning convex rod put in the locating hole is inconsistent, under the user mode, this positioning convex rod penetrates in the locating hole of push-button socket, can't rotate mutually between chair leg and the hack lever before making, stably being in user mode, when desire folds, only need press the button, make this positioning convex rod break away from locating hole and get final product;
Four, below, the forward end of described hack lever is provided with a lug that protrudes out downwards, and corresponding chair leg upper end trailing flank is fixed with a bearing pin that can articulate with this lug;
Aforementioned a kind of straight leg formula folding seat framework, wherein, described crossing frame is made of antero-lateral rod, left side bar and right-hand rod, the rearward end of left side bar, right-hand rod forms conflict face respectively, and contact at the leading flank of two chair legs of rear side respectively, the opposite side of left side bar, right-hand rod is respectively equipped with the lug that extends to the back upper place, and is articulated on the two chair legs of rear side by this lug respectively.
The left side bar of described crossing frame, the leading section of right-hand rod articulate by two chair legs of a L shaped connector and front side respectively, one side of two L shaped connectors is individually fixed in the trailing flank of two chair legs of front side, and another side is articulated in the lateral surface of left side bar, the forward end position of right-hand rod respectively.
Further, be connected with a gag lever post between the two chair legs of front side, this gag lever post contacts at the below, front side of this crossing frame, gag lever post is provided with upwardly extending fixture block, this fixture block is sticked in the rear side of crossing frame antero-lateral rod, thus, makes crossing frame and two chair legs stably be in the user mode of expansion.
The left side bar of described crossing frame, the leading section of the right-hand rod outside are articulated in two chair inboard legs of front side respectively, two chair inboard legs are respectively equipped with a spacing nose bar in this top, articulated section, left side bar, right-hand rod respectively at this articulated section be provided with can by after be fastened on spacing button on the corresponding spacing nose bar forward, thus, make crossing frame and two chair legs stably be in the user mode of expansion.
Aforementioned a kind of straight leg formula folding seat framework, its crossing frame is made of antero-lateral rod, left side bar and right-hand rod, the below of end is respectively equipped with a U-shaped fixture before and after left side bar, the right-hand rod, form four pivoting points on the described crossing frame between each U-shaped fixture and left side bar, the right-hand rod, be provided with a drive-connecting shaft respectively between the two chair legs of front side and between the rear side two chair legs, the both ends of this two drive-connecting shaft are rotatable respectively to be arranged in described four pivoting points.
Drive-connecting shaft between the two chair legs of described front side is provided with a U-shaped spare that protrudes out forward, be provided with a spring in this U-shaped spare and be subjected to this spring action and convexedly stretch in positioning convex rod outside the U-shaped spare, the antero-lateral rod relevant position of described crossing frame is provided with the cramp of downward extension, have a locating hole that can be fastened on the aforementioned positioning convex rod on this cramp, thus, make crossing frame and two chair legs stably be in the user mode of expansion.
A kind of straight leg formula folding seat, comprising: a seat, its bottom surface have four pivoting points, and these four pivoting points roughly are positioned on four summits of a rectangle; Four chair legs, the position respectively at sustained height is connected with a pivoted pole between the two chair legs of front side and between the two chair legs of rear side, and the end of this two pivoted pole is articulated in four pivoting points of this seat respectively; Two hack levers, its rear end portion articulates with the position, two chair leg middle and upper parts of rear side respectively, two chair leg tops of aforementioned front side are provided with the lug that extends back, two hack lever leading sections articulate with this lug respectively, and the handrail that two hack levers are respectively equipped with the side of being fixed thereon and extend forward, this two handrail is pressed against the leg top, two tops of front side; One chair back is connected between the two chair leg first halves of rear side.
Aforementioned a kind of straight leg formula folding seat, wherein, two chair leg bottoms of front side turn forward, and the angle between itself and two hack levers is greater than 90 degree.
Aforementioned a kind of straight leg formula folding seat, wherein, the pivoted pole between the described rear side two chair legs bends to U-shaped forward.
A kind of straight leg formula folding seat comprises: a seat, and its left and right sides, bottom surface is fixed with two support bars, and this two support bars leading section, rearward end form four pivoting points, and these four pivoting points roughly are positioned on four summits of a rectangle; Four chair legs, be connected with a pivoted pole between the two chair legs of front side, nearly its both ends of this pivoted pole are provided with upwardly extending lug, this two lug is articulated in the pivoting point of described seat bottom surface two support bar leading sections, and two chair legs of rear side are articulated in the pivoting point of described seat bottom surface two support bar rearward end in the sustained height position; Two hack levers, its rear end portion articulates with the position, two chair leg middle and upper parts of rear side respectively, two chair leg tops of aforementioned front side are provided with the lug that extends back, two hack lever leading sections articulate with this lug respectively, and the handrail that two hack levers are respectively equipped with the side of being fixed thereon and extend forward, this two handrail is pressed against two chair leg tops of front side; One chair back is connected between the two chair leg first halves of rear side.
Aforementioned a kind of straight leg formula folding seat, its two chairs leg bottom turns forward, and the angle between itself and two hack levers is greater than 90 degree.
Aforementioned a kind of straight leg formula folding seat, pivoted pole is provided with the protuberance that protrudes out forward between the two chair legs of its front side, and relevant position, seat bottom surface is provided with downward extension and can be fastened on button portion on this protuberance.
By foregoing description as can be known, the present invention has creatively realized the folding of straight leg formula chair, and its folding process only needs a step to realize, thereby is one with two kinds of advantages of firm and durable of the folding and straight leg formula chair of convenience of staggered form folding seat.
Description of drawings
Fig. 1 is the perspective view of the embodiment of the invention one;
Fig. 2 is the perspective view in the embodiment of the invention one folding process;
Fig. 3 is an A place partial enlarged drawing among Fig. 1;
Fig. 4 is the perspective view after the embodiment of the invention one folds;
Fig. 5 is the perspective view of the embodiment of the invention two;
Fig. 6 is the perspective view in the embodiment of the invention two folding processes;
Fig. 7 is a B place partial enlarged drawing among Fig. 5;
Fig. 8 is a C place partial enlarged drawing among Fig. 6;
Fig. 9 is the perspective view of another angle in the embodiment of the invention two folding processes;
Figure 10 is a D place partial enlarged drawing among Fig. 9;
Figure 11 is the perspective view of the specific embodiment of the invention three;
Figure 12 is the perspective view of the specific embodiment of the invention three folding processes;
Figure 13 is the partial enlarged drawing at E place among Figure 12;
Figure 14 is the specific embodiment of the invention 31 hack levers and the cross-sectional view of the chair leg junction of corresponding front side;
Figure 15 is the perspective view of the specific embodiment of the invention four;
Figure 16 is the perspective view of the specific embodiment of the invention four folding processes;
Figure 17 is the partial enlarged drawing at F place among Figure 15;
Figure 18 is the perspective view after the specific embodiment of the invention four folds;
Figure 19 is the partial enlarged drawing at G place among Figure 18;
Figure 20 is the perspective view of the specific embodiment of the invention five;
Figure 21 is the perspective view after the specific embodiment of the invention five folds;
Figure 22 is the partial enlarged drawing at H place among Figure 21;
Figure 23 is the perspective view of the specific embodiment of the invention six;
Figure 24 is the perspective view after the specific embodiment of the invention six folds.
Specific embodiment
Specific embodiments of the invention one, referring to figs. 1 through Fig. 4, a kind of straight leg formula folding seat framework comprises crossing frame 1, four 21,22,23,24, two hack levers 31,32 of chair leg.
Wherein, four chair legs 21,22,23,24 are only to crossing one another, promptly be not to cross one another in twos as traditional folding seat, the length of the chair leg 23,22 of front left side and forward right side is less than the chair leg 24,21 of left rear side and right lateral side, and they articulate in sustained height position and crossing frame 1; Crossing frame 1 is used for being connected with the seat board of folding seat, constitute by antero-lateral rod 12, left side bar 13 and right-hand rod 11, the rearward end of left side bar 13, right-hand rod 11 forms conflict face respectively, and contact at the leading flank of two chair legs 24,21 of rear side respectively, the opposite side of left side bar 13, right-hand rod 11 is respectively equipped with the lug 82,81 that extends to the back upper place, and be articulated on the two chair legs 24,21 of rear side by this lug 82,81 respectively, as seen, when folding, crossing frame 1 can only upwards rotate with respect to two chair legs 24,21 of rear side, and can not rotate; The leading section of this left side bar 13, right-hand rod 11 articulates by two chair legs 23,22 of a L shaped connector 42,41 and front side respectively, one side of two L shaped connectors 42,41 is individually fixed in the trailing flank of two chair legs 23,22 of front side, and another side is articulated in the lateral surface of left side bar 13, right-hand rod 11 forward end positions respectively; Two hack levers 32,31 leading sections respectively with two chair legs 23 of front side, 22 upper ends articulate, its rear end portion respectively with two chair legs 24 of rear side, position, 21 middle and upper part articulates, two chair legs 23 of front side, 22 upper surface forms conflict face respectively, and contact at two hack levers 32 respectively, 31 leading sections below, two hack levers 32, below, 31 forward end is provided with the lug 72 of downward extension, 62, preceding chair leg 23,22 upper end trailing flanks are provided with the lug 71 that extends back, 61, corresponding two lugs 72 and 71, articulate mutually between 62 and 61, this shows, when folding, the chair leg 23 of front side, 22 with respect to two hack levers 32,31 can only rotate backward, and can not rotate forward.
From the above, the front and back two chair legs 23,24 or 22,21 of the same side, corresponding hack lever 32 or 31 and the respective side edge right-hand rod 13 of crossing frame 1 or left side bar 11 between form two folding quadric chains, and this quadric chain can only be folding to a direction when folding, and, angle before two between chair leg 23,22 and two hack levers 32,31 is greater than 90 degree, and the bending slightly backward of two chair legs, 24,21 bottoms of rear side, therefore, under the user mode, four chair legs 23,22,24,21 can stably be supported in ground.By this quadric chain, this straight leg formula folding seat frame chair only can be realized folding by single stepping or launch.
Be connected with a gag lever post 25 between the two chair legs 23,22 of front side, this gag lever post 25 can contact at antero-lateral rod 12 belows of this crossing frame 1, gag lever post 25 is provided with upwardly extending fixture block 5, with reference to Fig. 3, this fixture block 5 is sticked in the rear side of crossing frame 1 antero-lateral rod 12, this fixture block 5 slightly is bent to form a curved surface forward, antero-lateral rod 12 front sides are provided with forward an anchor point 50, these fixture block 5 relevant positions are provided with the locating hole that cooperates with it, thus, make crossing frame 1 and two chair legs 23,22 stably be in the user mode of expansion.
Upper position between the two chair legs 24,21 of above-mentioned rear side and lower position are fixedly connected by connecting rod 26,27 respectively.
Specific embodiments of the invention two, with reference to Fig. 5 to Figure 10, its primary structure is identical with the foregoing description one with folding principle, and the main distinction is:
One, two chair legs 23 of crossing frame 1 and front side, connection between 22 and locate mode difference, in the present embodiment, the left side bar 13 of crossing frame 1, the leading section outside of right-hand rod 11 is articulated in two chair legs 23 of front side respectively, 22 inboards, with reference to Fig. 7 and Fig. 8, two chair legs 23,22 inboards are respectively equipped with a spacing nose bar 9 in this top, articulated section, left side bar 13, right-hand rod 11 respectively at this articulated section be provided with can by after be fastened on spacing button 44 on the corresponding spacing nose bar 9 forward, 43, thus, make crossing frame 1 and two chair legs 23,22 can stably be in the user mode of expansion, in the present embodiment, do not have gag lever post structure among the embodiment one.
Two, two hack levers 32,31 with two chair legs 23 of front side, connected mode difference between 22, describe with the connected mode between the chair leg 22 of the hack lever 31 on right side and forward right side, with reference to Fig. 9 and Figure 10, below, hack lever 31 forward end is provided with the lug 311 of downward extension, chair leg 22 upper ends form a conflict face 220, its rear side is provided with a pivot connected slot to lower recess, this lug 311 is articulated in this pivot connected slot by a bearing pin 221, and should conflict face 220 rear sides form the inclined-plane 222 of stepping down, thus, chair leg 22 with respect to hack lever 31 can only roll over backward by and can not roll over forward and lean on.The chair leg 23 of front left side is identical therewith with connected mode between the hack lever 32 in left side, no longer describes in detail.
All the other structures of present embodiment are corresponding identical with embodiment one, and its label correspondence in the accompanying drawings is identical.
Specific embodiments of the invention three, with reference to Figure 11 to Figure 14, its primary structure is identical with the foregoing description one with folding principle, and the main distinction is: do not have location structure between crossing frame 1 and the gag lever post 25, and be provided with location structure in the junction of two chair legs 23,22 of hack lever 32,31 and front side.Be elaborated with the connected mode between the chair leg 23 of the hack lever 32 in left side and front left side, reference 13 and Figure 14, below, hack lever 32 forward end is provided with a PBU pushbutton unit, this PBU pushbutton unit comprises push-button socket 321, the spring 323 that part convexedly stretches in the outer button 322 of push-button socket 321 and is located in the push-button socket 321 and button 322 is held out against outside push-button socket 321, corresponding preceding chair leg 23 tops form the stairstepping that cooperates with this push-button socket 321, should before be provided with a positioning convex rod 231 that can protrude out to push-button socket 321 directions in chair leg 23 tops, and be provided with the spring 232 that this positioning convex rod 231 is outwards protruded out, the relevant position of push-button socket 321 is provided with a locating hole 324 that supplies this positioning convex rod 231 to penetrate, the end that the inner end of button 322 and this positioning convex rod 231 put in the locating hole 324 is inconsistent, under the user mode, this positioning convex rod 231 penetrates in the locating hole 324 of push-button socket 321, can't rotate mutually between chair leg 23 and the hack lever 32 before making, stably to be in user mode, when desire folds, only need press the button 322, make this positioning convex rod 231 break away from locating hole 324 and get final product.Connected mode between the hack lever 31 on right side and the chair leg 22 of forward right side is identical with said structure.
All the other structures of present embodiment are corresponding identical with embodiment one, and its label correspondence in the accompanying drawings is identical.
Specific embodiments of the invention four, with reference to Figure 15 to Figure 19, its primary structure is identical with the foregoing description one with folding principle, and the main distinction is:
One, its crossing frame 1 and four chair legs 23,22,24,21 syndeton and locate mode difference, in the present embodiment, the left side bar 13 of crossing frame 1, the below of end, right-hand rod 11 front and back is respectively equipped with a U-shaped fixture 17,18 and 16,15, each U-shaped fixture 17,18,16,15 with left side bar 13, form four pivoting points between the right-hand rod 11, front side two chair legs 23, reach rear side two chair legs 24 between 22, be provided with a drive-connecting shaft 28 between 21 respectively, 29, this two drive-connecting shaft 28,29 both ends are rotatable respectively to be arranged in described four pivoting points, with reference to Figure 18 and Figure 19, the drive-connecting shaft 28 of front side is provided with a U-shaped spare that protrudes out forward 52, be provided with a spring 54 in this U-shaped spare 52 and be subjected to 54 effects of this spring and convexedly stretch in the outer positioning convex rod 53 of U-shaped spare 52, antero-lateral rod 12 relevant positions of crossing frame 1 are provided with the cramp 51 of downward extension, have a locating hole 510 that can be fastened on the aforementioned positioning convex rod 53 on this cramp 51, thus, make crossing frame 1 and two chair legs 23,22 stably are in the user mode of expansion.
Two, connected mode between the two chair legs 23,22 of its two hack lever 32,31 and front side is different, the structure of present embodiment is described with the syndeton between the chair leg 23 of the hack lever 32 in left side and front left side, with reference to Figure 15 and Figure 17, below, the forward ends of hack lever 32 is provided with a lug that protrudes out 63 downwards, and corresponding chair leg 23 upper end trailing flanks are fixed with a bearing pin 64 that can articulate with this lug 63.
All the other structures of present embodiment are corresponding identical with embodiment one, and its label correspondence in the accompanying drawings is identical.
The framework that is straight leg formula folding seat that above-mentioned four embodiment describe, when using, its seat can be fixed on its crossing frame 1, also can be fixed on two hack levers 31,32, all can realize purpose of the present invention.When seat was fixed on the crossing frame 1, two hack levers 31,32 can be used as handrail, and seat is fixed on two hack levers 31,32, and then this folding seat does not have handrail.
Specific embodiments of the invention five, with reference to Figure 20 to Figure 22, a kind of straight leg formula folding seat comprises a seat 10, a chair back 20, four chair legs 23,22,24,21 and two hack levers 32,31.These seat 10 bottom surfaces have four pivoting points 17,18,16,15, and these four pivoting points 17,18,16,15 are formed by four U-shaped spares, and roughly are positioned on four summits of a rectangle; Position respectively at sustained height is connected with a pivoted pole 28,29 between the two chair legs 23,22 of front side and between the two chair legs 24,21 of rear side, and the end of this two pivoted pole 28,29 is articulated in four pivoting points 17,16 and 18,15 of this seat respectively; The rearward end of two hack levers 32,314 articulates with the position, two chair legs, 24,21 middle and upper part of rear side respectively, with reference to Figure 21 and Figure 22, chair leg 22 tops of forward right side are provided with the lug 223 that extends back, hack lever 31 leading sections on right side articulate with this lug 223 by the lug 312 that extends downwards, and hack lever 31 is provided with the handrail 310 that fixedly is covered in its top and extends forward, and this handrail 310 is pressed against chair leg 22 tops; The chair back 20 is connected between two chair legs, 24,21 first halves of rear side.
Specific embodiments of the invention six, with reference to Figure 23 and Figure 24, its primary structure is identical with embodiment five with folding principle, the main distinction is that the connected mode of its seat 10 is different, in the present embodiment, the left and right sides, bottom surface of seat 10 is fixed with two support bars 102 and 101, and these two support bars, 102,101 rearward end, leading section form four pivoting points, and these four pivoting points roughly are positioned on four summits of a rectangle; Be connected with a pivoted pole 28 between the two chair legs 23,22 of front side, these pivoted pole 28 nearly its both ends are provided with upwardly extending lug 104,103, this two lug 104,103 is articulated in the pivoting point of these seat 10 bottom surfaces two support bars, 102,101 leading sections, and two chair legs 24,21 of rear side are articulated in the pivoting point of described seat 10 bottom surfaces two support bars, 102,101 rearward end in the sustained height position.All the other structures of present embodiment are corresponding identical with embodiment five, and adopt identical label in the drawings.
Among aforementioned two embodiment, two hack levers 31,32 are as handrail.
Above-mentioned only is several specific embodiment of the present invention, but design concept of the present invention is not limited thereto, and allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Claims (20)
1, a kind of straight leg formula folding seat framework comprises:
One crossing frame, for having the rectangular configuration of four pivoting points, these four pivoting points are positioned on the limit or summit of this rectangular configuration;
Four chair legs, four chair leg almost parallels or only to crossing one another are articulated in four pivoting points of this crossing frame at the position of sustained height, and four chair legs are limited in the perpendicular of fore-and-aft direction extension with respect to the rotation direction of this crossing frame.
2, a kind of straight leg formula folding seat framework as claimed in claim 1, it is characterized in that also comprising two hack levers, its leading section articulates with two chair leg upper ends of front side respectively, its rear end portion articulates with the position, two chair leg middle and upper parts of rear side respectively, form folding quadric chain between the hack lever of the front and back two chair legs of above-mentioned the same side, correspondence and the respective side edge of crossing frame, this quadric chain forms the stopping means that limits its rotational angle at a pivoting point at least.
3, a kind of straight leg formula folding seat framework as claimed in claim 2, wherein, described crossing frame or two hack levers are used for fixing the seat of folding seat.
4, a kind of straight leg formula folding seat framework as claimed in claim 2, wherein, the upper surface of two chair legs of described front side forms conflict face respectively, and contact at respectively below the two hack lever leading sections, and the below that corresponding preceding chair leg and the articulated section between the hack lever are positioned at the rear side and the hack lever of this preceding chair leg, and the angle between two preceding chair legs and two hack levers is greater than 90 degree.
5, a kind of straight leg formula folding seat framework as claimed in claim 4, wherein, below, the forward end of described two hack levers is provided with the lug of downward extension, and described preceding chair leg upper end trailing flank is provided with the lug that extends back, and articulates mutually between the two corresponding lugs.
6, a kind of straight leg formula folding seat framework as claimed in claim 4, wherein, below, the forward end of described two hack levers is provided with the lug of downward extension, two chair leg upper ends, described front side are provided with a pivot connected slot to lower recess by rear side, this lug is articulated in this pivot connected slot by a bearing pin, and the conflict face rear side of two chair leg upper ends of described front side forms the inclined-plane of stepping down.
7, a kind of straight leg formula folding seat framework as claimed in claim 4, wherein, below, the forward end of described hack lever is provided with a PBU pushbutton unit, this PBU pushbutton unit comprises push-button socket, the spring that part convexedly stretches in the outer button of push-button socket and is located in the push-button socket and button is held out against outside push-button socket, corresponding preceding chair leg top forms the stairstepping that cooperates with this push-button socket, should before be provided with a positioning convex rod that can protrude out to the push-button socket direction in chair leg top, and be provided with the spring that this positioning convex rod is outwards protruded out, the relevant position of push-button socket is provided with a locating hole that supplies this positioning convex rod to penetrate, and the end that the inner end of described button and this positioning convex rod put in the locating hole is inconsistent.
8, a kind of straight leg formula folding seat framework as claimed in claim 4, wherein, below, the forward end of described hack lever is provided with a lug that protrudes out downwards, and corresponding chair leg upper end trailing flank is fixed with a bearing pin that can articulate with this lug.
9, a kind of straight leg formula folding seat framework as claimed in claim 1, wherein, described crossing frame is made of antero-lateral rod, left side bar and right-hand rod, the rearward end of left side bar, right-hand rod forms conflict face respectively, and contact at the leading flank of two chair legs of rear side respectively, the opposite side of left side bar, right-hand rod is respectively equipped with the lug that extends to the back upper place, and is articulated on the two chair legs of rear side by this lug respectively.
10, a kind of straight leg formula folding seat framework as claimed in claim 9, wherein, the left side bar of described crossing frame, the leading section of right-hand rod articulate by two chair legs of a L shaped connector and front side respectively, one side of two L shaped connectors is individually fixed in the trailing flank of two chair legs of front side, and another side is articulated in the lateral surface of left side bar, the forward end position of right-hand rod respectively.
11, a kind of straight leg formula folding seat framework as claimed in claim 10, wherein, be connected with a gag lever post between the two chair legs of front side, this gag lever post contacts at the below, front side of this crossing frame, gag lever post is provided with upwardly extending fixture block, and this fixture block is sticked in the rear side of crossing frame antero-lateral rod.
12, a kind of straight leg formula folding seat framework as claimed in claim 9, wherein, the left side bar of described crossing frame, the leading section of the right-hand rod outside are articulated in two chair inboard legs of front side respectively, two chair inboard legs are respectively equipped with a spacing nose bar in top, this articulated section, left side bar, right-hand rod respectively at this articulated section be provided with can by after be fastened on spacing button on the corresponding spacing nose bar forward.
13, a kind of straight leg formula folding seat framework as claimed in claim 1, wherein, described crossing frame is made of antero-lateral rod, left side bar and right-hand rod, the below of end is respectively equipped with a U-shaped fixture before and after left side bar, the right-hand rod, form four pivoting points on the described crossing frame between each U-shaped fixture and left side bar, the right-hand rod, be provided with a drive-connecting shaft respectively between the two chair legs of front side and between the rear side two chair legs, the both ends of this two drive-connecting shaft are rotatable respectively to be arranged in described four pivoting points.
14, a kind of straight leg formula folding seat framework as claimed in claim 13, wherein, drive-connecting shaft between the two chair legs of described front side is provided with a U-shaped spare that protrudes out forward, be provided with a spring in this U-shaped spare and be subjected to this spring action and convexedly stretch in positioning convex rod outside the U-shaped spare, the antero-lateral rod relevant position of described crossing frame is provided with the cramp of downward extension, has a locating hole that can be fastened on the aforementioned positioning convex rod on this cramp.
15, a kind of straight leg formula folding seat comprises:
One seat, its bottom surface have four pivoting points, and these four pivoting points roughly are positioned on four summits of a rectangle; Four chair legs, the position respectively at sustained height is connected with a pivoted pole between the two chair legs of front side and between the two chair legs of rear side, and the end of this two pivoted pole is articulated in four pivoting points of this seat respectively;
Two hack levers, its rear end portion articulates with the position, two chair leg middle and upper parts of rear side respectively, two chair leg tops of aforementioned front side are provided with the lug that extends back, two hack lever leading sections articulate with this lug respectively, and the handrail that two hack levers are respectively equipped with the side of being fixed thereon and extend forward, this two handrail is pressed against the leg top, two tops of front side;
One chair back is connected between the two chair leg first halves of rear side.
16, a kind of straight leg formula folding seat as claimed in claim 15, wherein, two chair leg bottoms of front side turn forward, and the angle between itself and two hack levers is greater than 90 degree.
17, a kind of straight leg formula folding seat as claimed in claim 15, wherein, the pivoted pole between the described rear side two chair legs bends to U-shaped forward.
18, a kind of straight leg formula folding seat comprises:
One seat, its left and right sides, bottom surface is fixed with two support bars, and this two support bars leading section, rearward end form four pivoting points, and these four pivoting points roughly are positioned on four summits of a rectangle;
Four chair legs, be connected with a pivoted pole between the two chair legs of front side, nearly its both ends of this pivoted pole are provided with upwardly extending lug, this two lug is articulated in the pivoting point of described seat bottom surface two support bar leading sections, and two chair legs of rear side are articulated in the pivoting point of described seat bottom surface two support bar rearward end in the sustained height position;
Two hack levers, its rear end portion articulates with the position, two chair leg middle and upper parts of rear side respectively, two chair leg tops of aforementioned front side are provided with the lug that extends back, two hack lever leading sections articulate with this lug respectively, and the handrail that two hack levers are respectively equipped with the side of being fixed thereon and extend forward, this two handrail is pressed against two chair leg tops of front side;
One chair back is connected between the two chair leg first halves of rear side.
19, a kind of straight leg formula folding seat as claimed in claim 18, wherein, two chair leg bottoms of front side turn forward, and the angle between itself and two hack levers is greater than 90 degree.
20, a kind of straight leg formula folding seat as claimed in claim 18, wherein, pivoted pole is provided with the protuberance that protrudes out forward between the two chair legs of described front side, and relevant position, seat bottom surface is provided with downward extension and can be fastened on button portion on this protuberance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044708 CN1931054A (en) | 2005-09-12 | 2005-09-12 | Folding chair and its straight leg frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044708 CN1931054A (en) | 2005-09-12 | 2005-09-12 | Folding chair and its straight leg frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1931054A true CN1931054A (en) | 2007-03-21 |
Family
ID=37877195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510044708 Pending CN1931054A (en) | 2005-09-12 | 2005-09-12 | Folding chair and its straight leg frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1931054A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102578849A (en) * | 2012-03-12 | 2012-07-18 | 台州锐天休闲用品有限公司 | Folding chair |
| CN103040264A (en) * | 2013-01-29 | 2013-04-17 | 姚志红 | Folding chair |
| CN107503420A (en) * | 2016-10-31 | 2017-12-22 | 宋景秀 | The wall-mounted or false wall-mounted discrete toilet seat in two ponds |
-
2005
- 2005-09-12 CN CN 200510044708 patent/CN1931054A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102578849A (en) * | 2012-03-12 | 2012-07-18 | 台州锐天休闲用品有限公司 | Folding chair |
| CN102578849B (en) * | 2012-03-12 | 2014-08-13 | 台州锐天休闲用品有限公司 | Folding chair |
| CN103040264A (en) * | 2013-01-29 | 2013-04-17 | 姚志红 | Folding chair |
| CN103040264B (en) * | 2013-01-29 | 2015-11-04 | 姚志红 | Folding seat |
| CN107503420A (en) * | 2016-10-31 | 2017-12-22 | 宋景秀 | The wall-mounted or false wall-mounted discrete toilet seat in two ponds |
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Open date: 20070321 |