Utility model content
One purpose of the utility model is to provide a kind of linkage mechanism at least to overcome drawbacks described above in the prior artOne of.Advantageously, the utility model is simply cleverly to design effectively, synergistically while solving in the prior art above-mentionedDefect.
It is according to the present utility model in a first aspect, provide a kind of linkage mechanism, the linkage mechanism is for seat unitMechanical extending device, the linkage mechanism can move and the bottom of including between curling position, extended position and backward positionPortion's substrate, portions mounting plate, footstool component and portions adjust component, and the portions adjustment component includes at least back bracket, leans onCarry on the back pivot link, rear support connecting rod and after crank, wherein the back bracket is with the backrest pivot link by pivotably joiningFitting rotation connection；The after crank passes through pivotable connector and the rear support connecting rod, the backrest pivot link respectivelyAnd the portions mounting plate rotation connection；And the rear support connecting rod also passes through pivotable connector with the bottom substrateRotation connection, and wherein, finite place piece is set on the after crank, and the portions mounting plate is provided with the first limitPlane and the second confined planes are provided on the backrest pivot link, wherein when the linkage mechanism is in extended position,The locating part can cooperate with first confined planes being arranged on the portions mounting plate to generate position-limiting action；Work as instituteWhen stating linkage mechanism and being in backward position, the locating part can be with second limit that is arranged on the backrest pivot linkPlane cooperates to generate position-limiting action.
According to one embodiment, the locating part can be limiting rivet or limiting bush.
According to one embodiment, the backrest pivot link can be configured to have protruding portion, the protrusion in its lower endPortion can bendingly extend relative to the main body of the backrest pivot link and including second confined planes, so that in backward positionSecond confined planes can cooperate with the locating part.
According to one embodiment, compared with extended position and backward position, when the linkage mechanism is in curling positionWhen, the pivot for connecting the rear support connecting rod and the after crank has maximum vertical height relative to ground, whereinThe length of the rear support connecting rod can be shortened so that the maximum vertical height reduces.
According to one embodiment, the footstool component may include footstool bracket and multiple connecting rods, the multiple connecting rodIt is respectively arranged to for institute is stretched and folded during adjustment of the linkage mechanism between curling position and extended positionState footstool bracket.
According to one embodiment, the footstool component can also include intermediate footstool bracket, preceding footstool connecting rod, rear footstoolIt connecting rod, the main footstool connecting rod that rear footstool connecting rod is pivotally attached to by pivotable connector and is rotated by pivotable connectorThe secondary footstool connecting rod of footstool connecting rod before being connected to, wherein the preceding footstool connecting rod and it is described after footstool connecting rod pass through respectively can pivotTurn connector and is pivotally attached to portions mounting plate；Both the pair footstool connecting rod and the main footstool connecting rod pass through respectively can pivotTurn connector and is pivotally attached to both the footstool bracket and the intermediate footstool bracket.
Second aspect according to the present utility model provides a kind of mechanical extending device for seat unit, the machineryExtending apparatus includes the linkage mechanism of a pair of of base image, and the linkage mechanism is gear above-mentioned according to the present utility modelThe linkage mechanism of structure, the pair of base image is fixedly connected by fixation member.
The mechanical extending device can be manual actuation or electric drive.
According to one embodiment, the fixation member may include being connected between the linkage mechanism of a pair of of base imageShaft pipe fitting, forward horizontal stand pipe, preceding bottom connecting rod, torsion resistant tube, rear balance pipe and rear bottom connecting rod.
The third aspect according to the present utility model, provides a kind of seat unit, the seat unit can curling position,It is moved between extended position and backward position and including portions, backrest and mechanical stretching above-mentioned according to the present utility modelDevice.
The seat unit can be type hand seat unit, be also possible to power type seat unit.
Technical solution according to the present utility model can realize multiple limit functions in different positions with same locating part.In addition, technical solution according to the present utility model can also compared with the maximum in existing similar linkage mechanism is vertical highlyEnough dissections reduced to the cushion of seat unit.
The selection that this utility model content is intended to introduce utility model design in simplified form is provided, is being embodied belowIt will be further described in mode.This utility model content be not intended to determine the key feature of claimed theme orEssential feature, nor it is intended for limiting the range of claimed theme.
Specific embodiment
The embodiments of the present invention are specifically described to meet legal requirements in text.But the description itself is notIt is intended to limit the scope of the utility model.On the contrary, inventor, which has been expected claimed theme, can also be used other way in factIt applies.
The utility model relates to seat unit and its mechanical extending device can be type hand, be also possible to power type's.Be illustrated by taking type hand seat unit and its mechanical extending device as an example herein, and power type seat unit and itsWhat the difference of mechanical extending device and type hand was known to those skilled in the art, details are not described herein.The utility modelThe linkage mechanism that power type seat unit is equally applicable to the improvement of linkage mechanism proposed, those skilled in the art obviously may be usedThe utility model is similarly applicable to power type mechanical extending device and power type seat list according to the introduction of this specificationIn member, thus linkage mechanism obtained, mechanical extending device and seat unit also belong to the protection of the utility modelIn range.
One embodiment according to the present utility model, seat unit have portions, backrest and mechanical extending device 100.Such asShown in Fig. 1, which includes the linkage mechanism 110,110 ' of a pair of of base image, the connection to base imageMotivation structure is fixedly connected by fixation member.The fixation member of the present embodiment includes the linkage mechanism for being connected to a pair of of base imageBetween shaft pipe fitting 140, forward horizontal stand pipe 150, preceding bottom connecting rod 160, torsion resistant tube 130, rear balance pipe 120 and rear bottom connecting rod (figureIn be not shown).
In addition, seat unit may include one or more handrail (not shown)s, bigger seat can also be incorporated intoIn chair unit, such as sofa or modularized seat unit.
Generally, for activating during linkage mechanism includes the movement being arranged between gathering, stretching, extension and backward positionWith multiple connecting rods of the movement of control seat unit.In general, the radial type actuating in order to realize linkage mechanism, these connecting rods energy canIt is pivotally coupled to constitute the one or more of the other connecting rod or plate of linkage mechanism.It is understood and appreciated that, between these connecting rodsPivotable connector can take various configurations, such as pivot pin, supporting member/bearing, traditional installation hardware, rivet, boltAnd well known any other suitable fastener in nut assembly or woodwork industry.In addition, the shape of connecting rod and bracketAlterable, the position of certain pivotal points can also change.It should be understood that when a connecting rod or other components be referred to as pivotly, canRotationally or fixedly " connection ", " connection ", " interconnection ", " attaching " etc. are in another element (such as connecting rod, bracket, frameDeng) on when, it is contemplated that the connecting rod and/or element are in direct contact with one another, or can also be contacted by other elements, such as cental elementPart.
In operation, the rotational motion of linkage mechanism guidance backrest, portions and (one or more) footstool.It is exemplary oneIn configuration, these movements are controlled by the linkage mechanism of a pair of of base image, which includes pivotly or canThe rotationally arrangement of connecting rod interconnected.The linkage mechanism between a pair of opposite handrail about dividing the vertical of seat unit equallyIt is arranged to plane is extended with facing relationship.In this way, following discussion will focus only upon one of linkage mechanism, and underContent in literary each section is equally applicable to another corresponding and complementary linkage mechanism of each corresponding mechanism.
A linkage mechanism 110 is illustrated in greater detail in Fig. 2A to Fig. 4 B.The linkage mechanism 110 is arranged for cutting with scissorsConnect the movement of the portions, backrest and (one or more) footstool of formula actuating and control seat unit.That is, linkage mechanism110 are adjustable to curling position (Fig. 2A, 2B), the stretching, extension position (TV) (Fig. 3 A, 3B) and backward position (Fig. 4 A, 4B).It is swinging backPosition, backrest are rotated backward and are biased with inclination angle backward, which is the obtuse angle relative to portions.
In the present embodiment, linkage mechanism 110 may include bottom substrate 12, portions mounting plate 7, footstool component and seatPortion adjusts component.Footstool component includes footstool bracket and multiple connecting rods, these connecting rods be respectively arranged in seat unit orFootstool bracket is stretched and folded during adjustment of the linkage mechanism between extended position and curling position.Portions mounting plate 7 is matchedIt is set to the portions for being fixedly mount to seat unit.Backrest from the rear portion of portions mounting plate 7 extend and rotationally withPortions adjust component connection.Portions adjustment component is adapted to that backrest is made to swing back and tilt, and portions mounting plate 7 is attached to bottomPortion's substrate 12.
In the embodiment shown in Fig. 2A to Fig. 4 B, footstool component includes preceding footstool connecting rod 4 and rear footstool connecting rod 5, this twoPerson is pivotally attached to portions mounting plate 7 by pivotable connector respectively.Footstool component further includes being turned by pivotable connectorThe dynamic main footstool connecting rod 3 for being connected to rear footstool connecting rod 5 and the secondary foot that preceding footstool connecting rod 4 is pivotally attached to by pivotable connectorStool connecting rod 2.Both secondary footstool connecting rod 2 and main footstool connecting rod 3 are pivotally attached to footstool bracket 1 by pivotable connector respectivelyWith intermediate 6 the two of footstool bracket.Footstool bracket 1 is for supporting main footstool (not shown), and intermediate footstool bracket 6 is for supportingAnother intermediate footstool (not shown) other than main footstool 1.
Since preceding footstool connecting rod 4 and rear footstool connecting rod 5 are connected by pivotable connector and the rotation of portions mounting plate 7 respectivelyIt connects, while rear footstool connecting rod 5 is locked connecting rod 9 and footstool drive link 8 with footstool respectively again and connected by the rotation of pivotable connectorIt connects, therefore, when driving force effect is on rotating shaft transmission part 16, rotating shaft transmission part 16 passes to footstool by corresponding pivot and locksIt is close to bar 9, it is made to travel forward, footstool connecting rod 5 after then being driven by footstool locking connecting rod 9, rear footstool connecting rod 5 drives main footstoolConnecting rod 3 moves, and footstool connecting rod 4 generates rotation main footstool connecting rod 3 drives again before, meanwhile, main footstool connecting rod 3 drives intermediate respectively againFootstool bracket 6 and footstool bracket 1 move, and the rotation of preceding footstool connecting rod 4 drives secondary footstool connecting rod 2 to move again, and secondary footstool connecting rod 2 is againIntermediate footstool bracket 6 and footstool bracket 1 is driven to move respectively, the movement velocity of secondary footstool connecting rod 2 will be faster than main footstool connecting rod 3,Therefore make secondary footstool connecting rod 2 that intermediate footstool bracket 6 be driven to be relatively rotated, while footstool bracket 1 being driven to be relatively rotated,To make entire footstool component extend, when the locating part (such as limiting bush) and setting being arranged on preceding footstool connecting rod 4In the corresponding limit face contact on main footstool connecting rod 3, the two cooperation generates position-limiting action.Intermediate footstool bracket 6 is to increaseAdding comfortableness and security, can removing without will affect whole stretching, extension function.
Portions adjustment component include footstool drive link 8 above-mentioned, footstool above-mentioned locking connecting rod 9, front support connecting rod 10,Rear support connecting rod 11, backrest pivot link 13, first bridge connecting rod 14, back bracket 15, rotating shaft transmission part 16, after crank 17,STATEMENT OF FEDERALLY SPONSORED 18, second bridges connecting rod 19 and preceding STATEMENT OF FEDERALLY SPONSORED 20 afterwards.As previously mentioned, rear footstool connecting rod 5 is respectively by pivotably joiningFitting and footstool locking connecting rod 9, footstool drive link 8, portions mounting plate 7 are rotatablely connected, and footstool locks connecting rod 9 and rotating shaft transmissionPart 16 is rotatablely connected by pivotable connector, portions mounting plate 7 respectively by pivotable connector and preceding footstool connecting rod 4, afterFootstool connecting rod 5, rear STATEMENT OF FEDERALLY SPONSORED 18, back bracket 15, preceding STATEMENT OF FEDERALLY SPONSORED 20 are rotatablely connected, and preceding STATEMENT OF FEDERALLY SPONSORED 20 is respectively by pivotably joiningFitting and second bridge joint connecting rod 19, front support connecting rod 10 be rotatablely connected, front support connecting rod 10 respectively by pivotable connector withFirst bridge joint connecting rod 14, bottom substrate 12 are rotatablely connected, and rear STATEMENT OF FEDERALLY SPONSORED 18 is connected by pivotable connector and the first bridge joint respectivelyBar 14, portions mounting plate 7, footstool drive link 8 are rotatablely connected, and after crank 17 passes through pivotable connector and the second bridge joint respectivelyConnecting rod 19, rear support connecting rod 11, backrest pivot link 13, portions mounting plate 7 are rotatablely connected, backrest pivot link 13 and backrest branchFrame 15 is rotatablely connected by pivotable connector.
Referring to Fig. 2A and Fig. 3 A, finite place piece A is set on bottom substrate 12.Locating part A can be limiting rivet orLimiting bush is also possible to other similar component.At the same time, being provided on front support connecting rod 10 can correspondingly be with thisThe confined planes of locating part A cooperation.Locating part A can cooperate with the confined planes on front support connecting rod 10 to constitute limiting device.When linkage mechanism 110 is in curling position, locating part A can cooperate with the confined planes being arranged on front support connecting rod 10(A referring to fig. 2), to generate position-limiting action.
Compared with the linkage mechanism for being not provided with this locating part A, linkage mechanism according to the present utility model is additionally arranged thisKind limiting device, therefore can reduce or even avoid the minim gap as present in linkage mechanism and/or mechanical extending device to makeAt influence.This minim gap is for example present in the connector for coupling each connecting rod --- such as rivet and bushing ---In.Due to these minim gaps, when linkage mechanism is in curling position and when by active force forward or backward, front supportConnecting rod 10 and rear support connecting rod 11 are easy to happen rotation, linkage mechanism are caused to shift whole relative to bottom substrate 12.Pass throughCooperating for locating part A and locating part A and the confined planes on the front support connecting rod 10 is set on bottom substrate 12, it canInhibition even is eliminated this undesirable displacement, so that linkage mechanism is more securely in the curling position.
Simultaneously as locating part A is disposed relative to the lower end rearward position of front support connecting rod 10 on bottom substratePlace, therefore movement of the linkage mechanism between curling position, extended position and backward position will not be interfered.
Furthermore, it is possible to which locating part is arranged on rotating shaft transmission part 16, which can be the sub-assembly of rivet and bushingForm, the confined planes that can be locked on connecting rod 9 with footstool cooperate to constitute limiting device.The limiting device is conducive to gearStructure is in stability when curling position.
A preferred embodiment according to the present utility model, the limit of above-mentioned rotating shaft transmission part 16 and footstool locking connecting rod 9Combined type locating part in device can be replaced by single limit element.Specifically, it can be set on footstool locking connecting rod 9Limit element B, limit element B can with the side of rotating shaft transmission part 16 cooperate to constitute limiting device, thus facilitate byLinkage mechanism 110 is fixed on curling position.Limit element B can be the form of single boss as shown in Figure 2 A.It can also be withOther structure types are imagined, as long as the discrete component of position-limiting action can be realized together with rotating shaft transmission part 16.As a result,The preferred embodiment is played and include the identical limit effect of the combined type locating part of several parts with improved simple structure,Number of parts can be reduced, reduce manufacturing cost.
Simultaneously as limit element B is arranged on footstool locking connecting rod 9 in shaft when linkage mechanism is in curling positionAt the position of the lower section of driving member 16, thus will not interfere linkage mechanism curling position, extended position and backward position itBetween movement.
As shown in Figure 3A, finite place piece C is set on after crank 17.Locating part C can be limiting rivet or limit liningSet, is also possible to other similar component.At the same time, it is respectively arranged on portions mounting plate 7 and backrest pivot link 13The first confined planes and the second confined planes that can correspondingly cooperate with locating part C.Locating part C respectively with the first confined planes andSecond confined planes cooperate to respectively constitute limiting device.
When linkage mechanism 110 be in stretching, extension the position (TV) when, locating part C can be arranged on portions mounting plate 7First confined planes cooperate (referring to Fig. 3 A), to generate position-limiting action.When linkage mechanism 110 is in backward position, locating part C(A referring to fig. 4) can be cooperated with the second confined planes being arranged on backrest pivot link 13, to generate position-limiting action.Therefore, withSame locating part realizes multiple limit functions in different positions.
In this case, the locating part D (referring to Fig. 3 B and Fig. 4 B) being arranged on portions mounting plate 7 can be omitted, becauseIt can be realized by locating part C for its position-limiting action.It dashes forward for this purpose, backrest pivot link 13 can be configured to have in its lower endPortion out, the protruding portion bendingly extend relative to the main body of backrest pivot link 13 and including second confined planes, so thatSecond confined planes described in backward position can cooperate with locating part C.
It is rotatablely connected as previously mentioned, rear support connecting rod 11 is held on it by a pivot and after crank 17, it is logical in its lower endIt crosses another pivot and bottom substrate 12 is rotatablely connected.As shown in Figure 2 B, compared in other positions, when seat unit or linkageWhen mechanism 110 is in curling position, the pivot for connecting rear support connecting rod 11 and after crank 17 has maximum relative to groundVertical height Hmax。
Compared with the maximum in existing similar linkage mechanism is vertical highly, preferably at one according to the present utility modelIn embodiment, the vertical height H of the maximum of rear support connecting rod 11maxIt is reduced to reduce the work of the cutting to the cushion of seat unitWith.This can for example be realized by reducing the length of rear support connecting rod 11 itself.Advantageously, the width of rear support connecting rod 11It can remain unchanged, to ensure the appropriate intensity of rear support connecting rod.
Unless expressly stated otherwise, in the present invention, " preceding " and " rear " refers respectively to use seat list as userThe user is usually faced when first direction and institute back to direction, "up" and "down" refers respectively to use seat as userIt is substantially away from when unit and to place the floor of the seat unit or the direction of bottom and generally toward placing the seat unitThe direction of floor or bottom.
Above by embodiment to the mechanical extending device of the utility model and the seat including this mechanical extending deviceChair unit is illustrated.It should be pointed out that explanation above is merely exemplary, those skilled in the art can be according to above statingBright to make various modifications and variations to the utility model embodiment, these modifications and variations are in the protection scope of the utility modelIt is interior.