CN205432650U - Folding mechanism and folding table bench - Google Patents

Abstract

The utility model discloses a folding mechanism and folding table bench. Folding mechanism is connecting piece, upper arm, underarm and connecting piece down on articulated in proper order, and still including can following the gliding locating part of upper arm, the extension section of upper arm and underarm will keep relatively fixed when being entangled by the locating part and can rotate relatively when not entangled, it has the limited rotating 's that mutually supports structure to go up connecting piece and upper arm, can receive the restriction when rotating certain angle, and this kind of structure underarm also can have with lower connecting piece. It is again the support arm that this folding mechanism's upper arm and underarm are folding arm, folding than big, the space utilization transformation rate is high. Do in the folding table bench folding mechanism is a plurality of, and upwards rigid coupling no. 1 supports an atress board and a panel in proper order, and a rigid coupling bottom plate has at least two folding mechanism subtends folding downwards. The folding back upper arm of this folding table bench and underarm are folded high not notable small very portablely, the high height that forms before folding connecting piece rigidity under and, stable in structure.

Description

A kind of fold mechanism and Folding table and stool

Technical field

This utility model relates to field of furniture, a kind of fold mechanism and apply the table stool of this fold mechanism.

Background technology

Having at present some stooles that can fold, the such as faldstool of Application No. 200720109759.9 on market, uses that 8 blocks of plates are hinged to be formed, the full-size after folding is than the full-size before folding also greatly, the most portable；The faldstool of Application No. 93229164.3, is made up of support and stool surface, and support is to be bent by reinforcing bar to form, although undersized framework is portable, but the height formed when using is the lowest, and tall people is seated nurse a grievance.The fold mechanism also having some folding tables can only be referred to as the magical effect of gathering mechanism unfolded; patent of invention such as Application No. 200710008635.6; its supporting leg can not fold itself; bottom surface, table portion can only be accommodated in; then two pieces of table doublings again, therefore when limiting table and being high, then limit can only more greatly can not be little for table size; if a height of 70cm of such as table, the length of the most whole desktop cannot be below 140cm.The situation that the fold mechanism Existential Space utilization rate conversion ratio of these folding tables and faldstool is low.

Summary of the invention

A kind of fold mechanism of this utility model offer and Folding table and stool, overcome the full-size after the folding existing for background technology than fold before full-size the most greatly, the most portable, height when small size uses is the lowest, supporting leg itself can not fold, the technical problem that fold mechanism space availability ratio conversion ratio is low.

Technical solution of the present utility model is: a kind of fold mechanism, including upper connector, upper arm, locating part, underarm, lower connector.Constituting hinged relationship between this upper arm and upper connector, this upper connector and upper arm have the structure limiting rotational angle, and both cooperate and jointly complete the effect that upper arm rotational angle limits.Constituting hinged relationship between upper arm and underarm, constitute hinged relationship between underarm and lower connector, the epimere of underarm has an extension, and upper arm is in the side of underarm epimere, and stage casing tilts to the opposite side of epimere, and hypomere is parallel with epimere；Locating part can slide along upper arm, in the top of locating part, boring ratio upper arm is slightly larger, and upper arm and underarm extension can be nested together by the bottom endoporus of locating part, makes upper arm and underarm keep being relatively fixed, when upper arm and underarm extension not being nested together, upper arm and underarm can relatively rotate；

When the centre-to-centre spacing of upper arm two hinge hole is equal with the centre-to-centre spacing of underarm two hinge hole, the plane at the centrage of upper arm hinge hole place common with the centrage of the hinge hole of underarm is vertical with base plate plane, and after this base plate plane folds with upper arm and underarm, hinge hole centrage common place plane is parallel；Otherwise then out of plumb, but main stress should be on vertical direction, institute angle (θ) should be greater than 45 °, if θ is more than 90 °, to form up big and down small structure when application, hence it is evident that not stablizing less than or equal to 90 °, this angle with the relation of upper arm two hinge hole centre-to-centre spacing and underarm two hinge hole centre-to-centre spacing is: set upper arm two hinge hole centre-to-centre spacing as b, underarm two hinge hole centre-to-centre spacing is a, has

Cos θ=(a-b)/(a+b), 45 ° of ＜ θ≤90 °；

The structure limiting rotational angle that this upper arm and upper connector are had, is characterized in that: upper connector includes substrate and two side, and substrate can be conflicted in face, limit corresponding with upper arm；Further, upper connector also includes the 3rd sidewall can conflicted with upper arm, and correspondingly, upper arm ends is the shape with this respective outer side edges, opens to side rotation only and can be propped up after putting in place during folding；Further: on the substrate of upper connector, have a substrate aperture, on upper arm, hinge hole is waist hole and upper arm is inserted in substrate aperture；Further: on upper arm, near hinge hole, be provided with elastomer, the jointed shaft through this hinge hole is exerted a force, when fold mechanism opens use, upper arm top can be made preferably to be maintained in substrate aperture.

The structure limiting rotational angle that upper arm and upper connector are had, underarm and lower connector can also have simultaneously, it is also possible to individually have；

When only using this fold mechanism do not use other to support and connect, effective number can not be less than two；

A kind of Folding table and stool, including a panel, one supports stressed plate, some fold mechanisms, locating part connecting rod, a base plate；The upper connector of fold mechanism is fixing with support stressed plate to be connected, and lower connector is fixing with base plate to be connected, and support stressed plate is fixing with panel to be connected,

Locating part connecting rod fixes the locating part connecting homonymy, and at least to have two fold mechanisms is to folding, to fold mechanism symmetrical shape.Folding after drawing in, panel and base plate are fixed together.

The lower rebound that increases between connector and base plate, panel, supports stressed plate and upper connector and combines, and lower connector, rebound and base plate combine.

The Folding table and stool of the technical solution of the utility model, its structure is applicable to stool and desk, and size hour can make faldstool, can make folding table when size is big.

Angle theta has a preferably scope:

Adult male ischium width is generally about 130mm, and the height H of stool is generally about 430mm, and the minimum length of base plate is about 2* (430*cot θ)+130, has a following table:

Preferably, the horizontal cross-section size arranging this Folding table and stool is standard A4 paper size, and the most a length of 297mm, say, that when H is about 430mm counts boundary dimensions in, and the preferred scope of θ is 80 °≤θ≤90 °；In like manner, when H is about 330mm, the preferred scope of θ is 77 °≤θ≤90 °.From 84 ° to 85 °, the derivative (tan θ) of tan θ ' jump to the next order of magnitude；When 85 °≤θ≤89.9 °, the derivative (tan θ) of tan θ ' across four orders of magnitude, it is meant that the horizontal component ability to bear of structure reduces rapidly, and horizontal component will impute to material and bear.To sum up, the preferred scope of θ is 80 °≤θ≤84 °.When size is big, namely when making folding table, the preferred scope of the general simpler θ of stressing conditions can be relaxed.

The fold mechanism of the technical solution of the utility model, upper arm and underarm constitute hinged relationship, do not interfere with each other during folding, and after Guan Bi, shared spatial altitude is about the width of an arm；Upper and lower arm is to fold arm and support arm, simple structure；

The Folding table and stool of the technical solution of the utility model, several fold mechanisms used do not interfere with each other during folding, and after Guan Bi, shared spatial altitude is slightly larger than the width of an arm, and space availability ratio is high；Multiple locating parts of homonymy can couple together by locating part connecting rod, it is simple to operation；The upper and lower arm that the upper and lower arm hinge hole centre-to-centre spacing of fold mechanism is caused when not waiting then can make overall structure holding capacity optimal with base plate out of plumb；The length of upper and lower arm can be very close to the length on the long limit of panel, and height when therefore faldstool uses can be very close to the twice of the long edge lengths of panel, and before and after folding, ratio is big；It addition, position is fixed between lower connector, stability under loading, base plate is big with the contact area on ground, does not sink at soft terrain, more stable.

Accompanying drawing explanation

Fig. 1 is the perspective cross-sectional schematic diagram of this utility model embodiment one；

Fig. 2 is this utility model embodiment one perspective view when using；

Fig. 3 is the perspective view during this utility model embodiment one folds；

Fig. 4 is the left view during this utility model embodiment one folds；

Fig. 5 is the schematic perspective view after all embodiments of this utility model fold；

Fig. 6 is the internal structure schematic top plan view after this utility model embodiment one folds；

Fig. 7 is upper connector 6 and the upper arm 7 broken section enlarged diagram of this utility model embodiment one；

Fig. 8 is the another kind of upper connector 6 structural representation with upper arm 7 of this utility model embodiment one；

Fig. 9 is the primary structure front view in this utility model embodiment two-fold；

Figure 10 is this utility model embodiment two primary structure front view when using；

Figure 11 is this utility model embodiment two principle graph of a relation；

Figure 12 is the primary structure perspective cross-sectional schematic diagram of this utility model embodiment three, and the hole 201 and the stile that alleviate weight are not drawn into；

Figure 13 is upper connector 6 and the upper arm 7 section view close-up schematic view of this utility model embodiment three；

Figure 14 is this utility model embodiment four primary structure perspective cross-sectional schematic diagram when using；

Figure 15 is upper connector 6 and the upper arm 7 section view close-up schematic view of this utility model embodiment four；

Figure 16 is another structural representation of elastomer 12.

Label declaration:

Panel 1, supports stressed plate 2, fold mechanism 3 base plate 4, handle 5, upper connector 6, upper arm 7, locating part 8, locating part connecting rod 9, underarm 10, lower connector 11, elastomer 12；

Buckle 101, upper surface 102, left surface 103, right flank 104, leading flank 105, trailing flank 106, anti-slip veins 107, oblong openings 108, buckle 109, aperture 110；

Alleviate the hole 201 of weight；

Substrate 601, sidewall 602, hinge hole 604, substrate aperture 6010, the 3rd sidewall 603；

Substrate 1101, sidewall 1102, hinge hole 1103, the 3rd sidewall 1104；

Rebound 400, buckle 401.

Detailed description of the invention

In the examples below that, initial pointOFor the center of total,XDirection of principal axis is " right ",YDirection of principal axis is " front ",ZDirection of principal axis be " on ".Material therefor is not limited by this utility model, such as: panel 1 and base plate 4 can use ABS resin, support stressed plate 2 and upper connector 6 and lower connector 11 can use metal plate punching part or pack alloy, upper arm 7 and underarm 10 can use thin-walled iron pipe or thin-wall steel tube, locating part 8 can use metal plate punching part, etc., it is preferred with the material that the enough senses of touch of intensity are good.If by lightweight, good rigidity, the material that intensity is big, then can simplify and integrate structure of the present utility model, such as, panel 1, support stressed plate 2 and upper connector 6 be simplified and be integrated into a part or panel 1 and support stressed plate 2 are integrated or support stressed plate 2 and upper connector 6 are integrated.For purposes of illustration only, following example the most entitled " faldstool ".

Embodiment one

A kind of faldstool, including a panel 1, one supports stressed plate 2, and four fold mechanisms 3 and a base plate 4, four fold mechanisms 3 are all folded to centre when folding.Two fold mechanism spacing of side are big, and two fold mechanism spacing of opposite side are little, i.e. position is asymmetric, sees Fig. 4, Fig. 6.Certainly, if folding table, in the case of size larger space is abundant, position also can be symmetrical.

Seeing Fig. 1, several buckles 101 inside panel 1, in order to fixing support stressed plate 2, support and are connected with two pairs of fold mechanisms 3 between stressed plate 2 and base plate 4.Support stressed plate 2 and be fixed with four upper connectors 6, upper connector 6 is hinged with upper arm 7, the locating part 8 that can slide it is cased with along upper arm 7 on upper arm 7, connect so that locating part connecting rod 9 is fixing with between left or same two right locating parts 8, upper arm 7 is hinged with underarm 10, underarm 10 is hinged with lower connector 11, and lower connector 11 is fixing with base plate 4 to be connected.

Panel 1 has upper surface 102, left surface 103, right flank 104, leading flank 105, trailing flank 106；Upper surface 102 has anti-slip veins 107；There is an oblong openings 108 right flank 104 middle and lower part, it is simple to the operation of finger when folding during unlatching；There is the buckle 109 of elongate gap right flank 104 also two sides, this buckle 109 matches with the buckle 401 on base plate 4, breach is to make this card be buckled with bigger elastic activity space, it is simple to blocks and departs from, when material therefor have bigger elastic time can there is no elongate gap；Right flank has the aperture 110 of a pair installation handle；The structure of left surface 103 and right flank 104 centrosymmetry；There is several buckle 101 inside leading flank 105 and trailing flank 106, jointly block support stressed plate 2.

Supporting stressed plate 2 and have some holes 201 alleviating weight, the edge bending in hole is formed down the stile of reinforced structure；Strip muscle additionally can be set or netted muscle carrys out reinforced structure.

Upper connector 6 includes substrate 601, sidewall 602, and sidewall 602 has hinge hole 604.

Being Rouno Cormer Pregrinding Wheel inside the upper end of upper arm 7, outside is small round corner or right angle or outer salient angle, sees Fig. 1, Fig. 7, when stool fully opens outside the face, limit at angle conflict with the substrate 601 of upper connector 6；Having a locating part 8 that can slide on upper arm 7, in locating part 8 top, boring ratio upper arm 7 is slightly larger, and locating part 8 bottom can accommodate upper arm 7 and underarm 10 extension；All there is a hinge hole at upper arm 7 two ends.

Seeing that Fig. 3, the epimere of underarm 10 have a hinge hole and an elongated segment section, stage casing is outward-dipping relative to epimere, upper arm 7 is " inner " relative to the epimere of underarm 10, opposite side is " outward ", and main purpose is to upper connector 6 and upper arm 7 and locating part 8 vacating space, it is to avoid interfere；Hypomere is parallel with epimere, and hypomere end is Rouno Cormer Pregrinding Wheel.

Lower connector 11 includes substrate 1101, sidewall 1102, and sidewall has hinge hole 1103；Substrate 1101 can be made of one with base plate 4.

Base plate 4 can be contained in panel 1；Corresponding with the upper connector 6 supported on stressed plate 2, base plate 4 has equal number of lower connector 11；The buckle 401 matched with the buckle 109 of panel 1 left surface 103 and right flank 104.Base plate 4 lower surface can also add anti-slip veins.

During use, panel 1 is blocked with two hands thumbs, remaining finger inserts respectively from the opening 108 of left surface 103 and right flank 104, buttress locating part connecting rod 9 and the most firmly make base plate 4 separate with panel 1 dropout, then lift on taking advantage of a situation, putting down locating part connecting rod 9 when upper arm 7 reaches operating angle with underarm 10, make locating part 8 block underarm 10 extension, stool can use；During folding, lift the locating part connecting rod 9 of the left and right sides the most respectively, be allowed to disengage underarm 10 extension and promote toward middle, then fold mechanism 3 folds to centre and toward falling, then suitably firmly makes panel 1 and base plate 4 interlock and i.e. complete folding.

Handle 5 is tightrope, carrying of Convenient stool.

Fig. 8 shows another structure of the present embodiment upper connector 6 and upper arm 7, and the 3rd sidewall 603 is fixedly connected on sidewall 602, and upper arm 7 opens has face, two limits to conflict with substrate 601 and the 3rd sidewall 603 respectively when putting in place, multiple spot stress is more stable.

Embodiment two

The present embodiment is with the difference of embodiment one: so that from the point of view of primary structure front view Figure 10 of used time, the structure that fold mechanism 3 is formed after opening is up-small and down-big, and upper and lower arm jointed shaft centrage common place plane is not orthogonal to base plate plane；Up-small and down-big and upper inferior greatly compared with more stable.In principle graph of a relation Figure 11,7 liang of hinge hole centre-to-centre spacing of upper arm are b, 10 liang of hinge hole centre-to-centre spacing of underarm are a, lower connector 11 is A with the jointed shaft of underarm 10, underarm 10 is B with the jointed shaft of upper arm 7, upper arm 7 is that C, B ' and C ' are respectively the position after B and C folds, the invariant position of A with the jointed shaft of upper connector 6；After folding upper arm 7 and underarm 10 position level andXOZFace projection conllinear and this projection line are parallel to base plate 4, after opening and to fold the angle of latter two attitude be θ, then a, b, θ meet relation cos θ=(a-b)/(a+b), 80 °≤θ≤84 °, the present embodiment θ is 80 °, and embodiment one is the a=b i.e. situation of θ=90 °.

Embodiment three

The present embodiment is with the difference of embodiment one: upper connector 6 simplifies integration with support stressed plate 2 and is formed integrally；Seeing that Figure 12, the number of fold mechanism 3 are three, the cross section of upper arm 7 and underarm 10 is square frame-shaped；A substrate aperture 6010 is had, it is allowed to upper arm 7 inserts on substrate 601；When stool is opened complete, the substrate aperture 6010 on substrate 601 is inserted in the upper end of upper arm 7；Seeing Figure 13, the upper articulation hole of upper arm 7 is waist hole, is provided with elastomer 12 near hinge hole, exerts a force the jointed shaft through this hinge hole, upper arm 7 can be made when faldstool opens use to be preferably maintained in substrate aperture 6010；Lower connector 11 also includes the 3rd sidewall 1104, and underarm 10 hypomere one sidewall and the 3rd sidewall 1104 during expansion are conflicted；Upper connector 6 also includes the 3rd sidewall 603, can increase the intensity of sidewall 602, but not contact with upper arm 7.Figure 16 is the schematic diagram of the another kind of structure of elastomer 12, and elastomer 12 is arranged at outside upper arm 7.

For increasing intensity and stability, between lower connector 11 and base plate 4, increase by a rebound 400, can use bonding, embed, the mode such as clamping is connected with base plate 4.

Using method is slightly different with embodiment one, when opening: after locating part 8 blocks underarm 10 extension, left and right promotes fold mechanism 3 the most slightly, upper arm 7 upper end is made to be directed at substrate aperture 6010, under the assosting effect of elastomer 12 and both hands, upper arm 7 upper end is by insertion and is maintained in substrate aperture 6010, and stool can use.During folding: carry under one's arms panel 1 with wrist or forearm lift the locating part connecting rod 9 of side and the locating part 8 of opposite side with hands while, after locating part 8 and upper arm 7 all disengage, locating part connecting rod 9 and locating part 8 is promoted toward middle, then fold mechanism 3 folds to centre and toward falling, then suitably firmly makes panel 1 and base plate 4 interlock and i.e. complete folding.

Embodiment four

The present embodiment is with the difference of embodiment three: see that Figure 14, lower connector 11 do not have the 3rd sidewall；The cross section of underarm 10 is flute profile " Contraband " and hypomere, stage casing and epimere diminish successively, namely " stage casing is outward-dipping relative to epimere " in embodiment one, and after folding, upper arm 7 and locating part 8 can be with folding in the channel space of underarm 10；Underarm 10 and hinged needs of lower connector 11 increase a hinged part, leave a blank in centre, in order to accommodate upper connector 6；3rd sidewall 603 is conflicted with upper arm 7 after fold mechanism 3 opens and puts in place, sees Figure 15.In conjunction with Figure 14 it can be seen that after size adjusting to physical dimension especially fold mechanism, such as strengthenOYThe size in direction, only can make Stability Analysis of Structures with to the fold mechanism 3 two folded.

Using method is essentially identical with embodiment three.It is pointed out that when fold mechanism 3 opens, the 3rd sidewall 603 can be conflicted with upper arm 7, so the distance that left and right promotes fold mechanism 3 the most slightly is the least, it could even be possible to need not push away, upper arm 7 upper end has been directed at substrate aperture 6010.

Content described in description above and accompanying drawing is schematic, is for helping understand this utility model rather than be given for limiting purpose, does not describe each possible embodiment of the present utility model.It will be apparent to those skilled in the art that this utility model can be made on the premise of without departing from this utility model spirit various modifications and variations, but result is still in right of the present utility model.

Claims (13)

1. a fold mechanism, it is characterised in that: described fold mechanism (3) includes upper connector (6), upper arm (7), locating part (8), underarm (10), lower connector (11)；

Described upper connector (6) has a substrate (601) and two side (602)；

Constitute hinged relationship and this upper arm (7) between described upper arm (7) and upper connector (6) and this upper connector (6) also includes the structure limiting rotational angle；

Hinged relationship is constituted between described upper arm (7) and underarm (10), constitute hinged relationship between described underarm (10) and lower connector (11) and follow certain length relation, the epimere of described underarm (10) has an extension, upper arm (7) is in the side of underarm (10) epimere, stage casing tilts to the opposite side of epimere, and hypomere is parallel with epimere；

Described locating part (8) can slide along upper arm (7), in the top of locating part (8), boring ratio upper arm (7) is slightly larger, upper arm (7) and underarm (10) extension can be nested together by the bottom endoporus of locating part (8), upper arm (7) and underarm (10) is made to keep being relatively fixed, when upper arm (7) and underarm (10) not being nested together, upper arm (7) and underarm (10) can relatively rotate and will not interfere.

Fold mechanism the most according to claim 1, described upper arm (7) and underarm (10) follow certain length relation, it is characterized in that: cos θ=(a-b)/(a+b), 77 °≤θ≤90 °, wherein a is underarm (10) two hinge hole centre-to-centre spacing, b is upper arm (7) two hinge hole centre-to-centre spacing, and θ is the angle after upper and lower arm opens with the hinge hole centrage common place plane folded under latter two attitude.

Fold mechanism the most according to claim 1 and 2, is characterized in that: there is face described upper arm (7) upper end, and when this upper arm (7) opens and puts in place, the substrate (601) with described upper connector (6) is conflicted.

Fold mechanism the most according to claim 1 and 2, it is characterized in that: described upper connector (6) includes one the 3rd sidewall (603), described upper arm (7) opens has a sidewall to conflict with the 3rd sidewall (603) when putting in place, it is also possible to two side (602) reinforcing only doing described upper connector (6) is used.

Fold mechanism the most according to claim 3, it is characterized in that: described upper connector (6) includes one the 3rd sidewall (603), described upper arm (7) opens has a sidewall to conflict with the 3rd sidewall (603) when putting in place, it is also possible to two side (602) reinforcing only doing described upper connector (6) is used.

Fold mechanism the most according to claim 1 and 2, is characterized in that: have a substrate aperture (6010) on described substrate (601), and described upper arm (7) can inject this substrate aperture (6010) after opening；The upper hinge hole of described upper arm (7) is waist hole, is provided with elastomer (12), makes upper arm (7) be maintained at more reliably in substrate aperture (6010) after upper arm (7) injects substrate aperture (6010) near this waist hole.

Fold mechanism the most according to claim 2, is characterized in that: the preferred scope of described angle theta is 80 °≤θ≤84 °.

8. according to the fold mechanism described in claim 1,2,5 or 7, it is characterized in that: the structure limiting rotational angle that upper arm (7) and upper connector (6) are had, underarm (10) and lower connector (11) can also have simultaneously, it is also possible to individually have.

9. the Folding table and stool of the fold mechanism comprised described in any one of claim 1-8, also include a panel (1), support stressed plate (2) and a base plate (4), described panel (1) is fixing with described support stressed plate (2) to be connected, described support stressed plate (2) is fixing with the upper connector (6) of described fold mechanism (3) to be connected, and described base plate (4) is fixing with the lower connector (11) of described fold mechanism (3) to be connected；

Described Folding table and stool includes described fold mechanism (3) at least two, and at least two fold mechanisms (3) to folding.

Folding table and stool the most according to claim 9, is characterized in that: the locating part (8) folding the fold mechanism (3) that homonymy is arranged in the same direction connects so that locating part connecting rod (9) is fixing.

11. Folding table and stools according to claim 9, is characterized in that: have a rebound (400) between lower connector (11) and base plate (4).

12. according to the Folding table and stool described in claim 9 or 11, it is characterized in that: described panel (1), support stressed plate (2) and upper connector (6), lower connector (11), rebound (400) and base plate (4), adjacent parts can simplify integration and be formed integrally, can also be that described panel (1), support stressed plate (2) and upper connector (6) simplification integration are formed integrally, lower connector (11), rebound (400) and base plate (4) simplify integration and are formed integrally.

13. Folding table and stools according to claim 9, is characterized in that: folding after drawing in, panel (1) and base plate (4) are fixed together.