CN203555399U - Swivel chair base plate - Google Patents
Swivel chair base plate Download PDFInfo
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- CN203555399U CN203555399U CN201320592754.1U CN201320592754U CN203555399U CN 203555399 U CN203555399 U CN 203555399U CN 201320592754 U CN201320592754 U CN 201320592754U CN 203555399 U CN203555399 U CN 203555399U
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- base
- bearing pin
- bracket
- seesaw
- connecting rod
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Abstract
The utility model discloses a swivel chair base plate. The swivel chair base plate comprises a base, a bracket and a warped plate, wherein the bracket is arranged in the base; the warped plate is arranged in the bracket; the warped plate takes a first pin shaft as a rotation pivot; the first pin shaft passes through the bracket and is connected with the base; the front part of the warped plate levers the bracket through a first connecting rod and a second connecting rod; the first connecting rod and the second connecting rod are hinged through a third pin shaft; the third pin shaft is connected with the bracket; a second pin shaft penetrates through the second connecting rod and passes through or avoids the bracket and then is connected with the base; track grooves are symmetrically arranged in the two sides of the bracket; the first pin shaft is arranged in each track groove in a penetrating manner; the base plate also comprises an elastic reset device for restoring the bracket in the normal position after the warped plate prizes the bracket to move. The base plate disclosed by the utility model has the advantages of being free of manual adjustment, more humanized, and better in universality. According to the swivel chair with the base plate, the restoring force of a backrest for leaning backwards or forwards is correspondingly matched according to the weight of a human body, so that no matter a heavy person or a light person can easily lean backwards or forwards and restore.
Description
Technical field
The utility model relates to swivel chair, office chair technical field, particularly a kind of Revolving chair chassis.
Background technology
Revolving chair chassis, also claims Revolving chair tray, is a vitals that is contained in swivel chair seat cushion below, the lifting of seat cushion, and the elevation angle of backrest regulates and all relies on chassis to complete.
Current Revolving chair tray is generally comprised of parts such as top tray, lower joist, rotating shaft and spring assemblies, and after top rotary table and swivel chair seat back are fixing, swivel chair can be done suitable reclining around the shaft, and can initiatively reply, and makes user have comfort.For example, Chinese patent discloses a kind of pallet, and (patent No. is: 02287885.8), mainly comprise base plate, sliding seat, conical pipe and adjusting device, sliding seat is movably connected in base plate, in the middle of sliding seat, connect the conical pipe of air pressure rod, by Taper Pipe fixed head, be welded in sliding seat together with conical pipe; Described adjusting device includes adjusting rod, adjustable plate, torsion spring a, torsion spring a fixed head; adjusting rod interts in sliding seat; adjustable plate is fixedly connected on adjusting rod and inserts on the one end in sliding seat, the one side of adjustable plate contact air pressure rod, and another side is connected with torsion spring a; On the another side of adjustable plate, be provided with adjustable plate and stop blade.
The adjusting device of above-mentioned Revolving chair tray regulates by torque spring completely, and for the different people of body weight, the power of needed torque spring needs different, makes product there is no good versatility.For this problem, the patent No. is: the Chinese patent of " 201020264417.6 " discloses a kind of adjustable revolving chair tray of rolling shaft, its utilization is carried in the restoring force that the gravity conduction of seat surface is backrest, can substantially realize the people who meets different weight and use and do not need and regulate.But while being sitting on the seat that above-mentioned pallet is installed reclining backward, because human body parts gravity is progressively increased by back rest supports and proportion, the gravity that is carried in seat surface is progressively diminished, the restoring force that gravity is transmitted to backrest diminishes thereupon, cause backrest restoring force deficiency when maximum reclining angle, restoring force too relies on the elastic recovery of elasticity reset device, therefore applicable crowd is limited in scope, the people that body weight is lighter is difficult to reclining, after the heavier people's reclining of body weight, be difficult to reply stand up, cannot reach Proper Match restoring force.
Summary of the invention
The utility model has overcome existing deficiency in above-mentioned prior art, the Revolving chair chassis that provides a kind of people who meets different weight to use, while not only having solved the backrest reclining of seat in the past, the discomfort that the skew of lumbar support position brings, thus improved comfort level; And in chair back-rest inclination process, the ratio that the gravity that loads on seat support is transmitted to chair back restoring force progressively increases, and rational backrest restoring force is provided all the time in whole process, reclining and reply are stood up like a cork to make the lighter or heavier people of body weight.
The technical solution of the utility model is achieved in that
A kind of Revolving chair chassis, comprise connecting the base of gas bar, in order to the bracket of fixing seat support and in order to connect the seesaw of the chair back, bracket is arranged in base, seesaw is arranged in bracket, seesaw middle part is installed with the first bearing pin and seesaw be take the first bearing pin as rotating fulcrum, the first bearing pin passes bracket and is connected with base, the bilateral symmetry of seesaw front portion is provided with first connecting rod, second connecting rod, one end of first connecting rod and seesaw front end are hinged by the 4th bearing pin, hinged and the 3rd bearing pin is connected with bracket by the 3rd bearing pin for the other end of first connecting rod and one end of second connecting rod, the other end of second connecting rod is installed with the second bearing pin and the second bearing pin passes or avoids being connected with base after bracket, bilateral symmetry at bracket offers the rail groove in order to guide bracket movement locus coordinating with the first bearing pin, the first bearing pin is located in rail groove, this chassis also comprises the elasticity reset device that makes bracket set back after seesaw prizes movement of bracket.
As preferably, the bilateral symmetry of bracket offer coordinate with the second bearing pin dodge the hollow slots of the second bearing pin when at movement of bracket, the second bearing pin is located in hollow slots.In bracket both sides, offer hollow slots, made bracket when motion, be not subject to the obstruction of the second bearing pin.
As preferably, thereby the cut bracket that makes of the part that interferes with the second bearing pin of bracket both sides is avoided the second bearing pin.
As preferably, the first described bearing pin is one whole major axis, and the two ends of the first bearing pin are separately successively through being connected with base after seesaw, rail groove.Can guarantee that like this it can provide enough intensity, can rotate freely seesaw.
As preferably, the first described bearing pin is two independently minor axises, and on base, correspondence is fixed with two supports, and one end of each minor axis is successively through being connected with base after seesaw, rail groove, and the other end of each minor axis is inserted in corresponding support.Adopt such structure to make base inside more succinct, and the first bearing pin is by stent support, has met the requirement of intensity.
As preferably, the second described bearing pin is one whole major axis, and the two ends of the second bearing pin are separately successively through being connected with base after second connecting rod, hollow slots.Can guarantee that equally like this it can provide enough intensity, can rotate freely second connecting rod.
Thereby the cut junction that makes bracket avoid the second bearing pin and the second bearing pin and base of the part that interferes with the second bearing pin of bracket both sides, under such condition, as preferably, the second described bearing pin is one whole major axis, and the two ends of the second bearing pin are connected with base through after second connecting rod separately.
As preferably, the second described bearing pin is two independently little axles, and on base, correspondence is fixed with two bearings, and one end of each little axle is successively through being connected with base after second connecting rod, hollow slots, and the other end of each little axle is inserted in corresponding bearing.Adopt such structure to make base inside more succinct, and can avoid elasticity reset device, make it not interrupted, and the second bearing pin is by seat supports, has met the requirement of intensity.
Thereby the cut junction that makes bracket avoid the second bearing pin and the second bearing pin and base of the part that interferes with the second bearing pin of bracket both sides, under such condition, as preferably, the second described bearing pin is two independently little axles, on base, correspondence is fixed with two bearings, one end of each little axle is connected with base through after second connecting rod, and the other end of each little axle is inserted in corresponding bearing.
As preferably, the first bearing pin is connected and refers to base: the bilateral symmetry at base rear end is provided with the first axis hole, and the first bearing pin is plugged in the first axis hole.
As preferably, the second bearing pin is connected and refers to base: the bilateral symmetry at base front end is provided with the second axis hole, and the second bearing pin is plugged in the second axis hole.
As preferably, the 3rd bearing pin is connected and refers to bracket: the 3rd bearing pin interts in bracket.The 3rd bearing pin can drive bracket to be synchronized with the movement.
As preferably, described base comprises connecting the base plate of gas bar, in the left and right sides of base plate, is vertically respectively provided with a gripper shoe, and gripper shoe and base plate are fixedly linked, and the first bearing pin, the second bearing pin are to be connected with the gripper shoe of base; Described bracket comprises the substrate that two block gaps are parallel and vertically arrange, and substrate is affixed on gripper shoe, and substrate upper end is bent to form to connect the supporting plate of seat support, between two substrates, is fixedly connected with connecting plate, and seesaw is arranged between two substrates.Base is coated on bracket wherein, rational in infrastructure, and integral body is more attractive in appearance.
As preferably, described first connecting rod is to be obliquely installed towards the direction that approaches seesaw from lower to upper, described second connecting rod is to be obliquely installed towards the direction that deviates from seesaw from lower to upper, and in movement of bracket process, the angle of second connecting rod and plumb line is no more than 90 degree all the time.In human body reclining process backward, human body back applies driving force to being connected in the backrest of seesaw, seesaw rotates to prize link motion, the angle of second connecting rod and plumb line is increased gradually, and second connecting rod and horizontal acute angle angle progressively reduce, bracket puts on the revolving force component increase of second connecting rod, thereby realizing gravitational load progressively increases for the restoring force moment of seesaw and linkage, the driving force progressively increasing with reclining along with backrest forms antagonism, restoring force relies on less to the elastic-restoring force of elasticity reset device, the needs that are applicable to different fat or thin crowds.
In order to allow bracket move along diagonal upward direction all the time, as preferably, described rail groove and hollow slots are all that direction towards close seesaw is obliquely installed from lower to upper.
In order to realize the chair back in the locking of a certain position, as preferably, this chassis is also provided with chair back seesaw locking mechanism, described chair back seesaw locking mechanism comprises that being symmetricly set on one on seesaw both sides arranges lockhole, is symmetricly set on two torsion spring a, two latches and two plug housings of the inner both sides of base; Plug housing is fixedly installed on base, and latch slides to intert and coordinates on plug housing and with lockhole, and the first spring arm of torsion spring a is connected with latch, and the second spring arm of torsion spring a is connected to one for driving torsion spring a to carry out the drive unit of back rotation.By above-mentioned locking mechanism, the chair back can be fixed on to the position that certain user feels comfortably cool.
As preferably, described drive unit comprises crank, positioning seat and driving lever, positioning seat and base are fixedly linked, positioning seat is arch and inner hollow, the upper end of positioning seat inside is provided with a projection to downward-extension, arranging of projection is divided into two locating slots by positioning seat inner upper end, in positioning seat, be provided with fixture block, the upper end of fixture block is stuck in locating slot, the two ends of crank are connected with the second spring arm of two torsion spring a, and crank connects fixture block by rocking bar, one end of driving lever is fixedly linked through base and fixture block, and the other end of driving lever is exposed to outside base; Driving lever is stirred in front and back, fixture block is moved on in another locating slot from a locating slot, fixture block rotates and drives crank to move, thereby drive two torsion spring a to rotate simultaneously, under the elastic force effect of torsion spring a, the first spring arm pulls latch to insert corresponding lockhole or from exiting to realize locking, the release of latch in lockhole.Adopt same driving lever to realize the locking of two latches, release action, structure is simplified and is ingenious, easy to use.
As preferably, described drive unit also comprises that two in order to install the column of torsion spring a, each column upper end has screwed a screw, torsion spring a is set on screw, column lower end is put up a bridge and is fixedly linked with base by an arch, between arch bridging and base end face, form axis hole, driving lever is put up a bridge and is connected with fixture block through one of them arch.
As preferably, bracket connects elasticity reset device, and described elasticity reset device is spring, and one end of spring is connected with bracket, and the other end of spring is connected with base.The reply that is seesaw and bracket by spring provides restoring force, effective simply again.
As preferably, on bracket, be provided with a cross bar, two ends and the bracket of cross bar are fixedly linked, and cross bar is hooked in one end of spring, and the other end of spring hooks base.Cross bar be arranged so that conveniently to tangle spring, can also increase in addition the intensity of bracket, make it more firm.
As preferably, the 3rd bearing pin connects elasticity reset device, and described elasticity reset device is spring, and one end of spring is connected with the 3rd bearing pin, and the other end of spring hooks base.Because the 3rd bearing pin drives bracket, be synchronized with the movement, so spring is connected with the 3rd bearing pin, can give bracket restoring force.
As preferably, described elasticity reset device is torsion spring b, torsion spring b is set on the first bearing pin, described seesaw comprise the side plate of two spaced and parallel and connect two side plates and in order to connect the connecting plate of the chair back, connecting plate is positioned at outside base, on the bottom surface of base, be provided with baffle plate, of torsion spring b turns round arm and baffle plate offsets, and another of torsion spring b turns round arm and connecting plate offsets.When seesaw is prized, of torsion spring b turns round arm and keeps motionless, and another of connecting plate extruding torsion spring b turned round arm and made two to turn round spacing between arm and reduce, and produces thus the elastic force that seesaw is resetted.
As preferably, described elasticity reset device is rubber spring, described rubber spring comprises the rubber layer being circumferentially fixed on the first bearing pin, outside rubber layer, fixed cover is provided with cylindrical outer casing, on cylindrical outer casing, be fixed with a pair of engaging lug, described the first bearing pin and base are fixedly linked, and described engaging lug and seesaw are hinged.During seesaw reclining, drive cylindrical outer casing to rotate certain corner, and the first bearing pin is fixed, so the rotation of cylindrical outer casing makes rubber layer produce torsion, the corner of cylindrical outer casing is larger, torsion is larger, this part torsion can order about seesaw and reset, thereby the chair back can be realized at any angle, regulates.
As preferably, described seesaw comprise the side plate of two spaced and parallel and connect two side plates and in order to connect the connecting plate of the chair back, connecting plate is positioned at outside base, is fixed with a pedestal on connecting plate, described engaging lug and pedestal are hinged.Pedestal coordinating of convenient and engaging lug be set.
Adopted design starting point of the present utility model, theory and the beneficial effect of technique scheme to be:
In human body reclining process backward, in identical seat support gravitational load situation, the restoring force moment on existing chassis is all progressively reduce or remain unchanged, owing to putting on the pressure of the chair back in reclining process, become large, it is large that driving force becomes, and causes restoring force to be not enough to resist driving force, and restoring force too relies on the elastic recovery of elasticity reset device, therefore applicable crowd is limited in scope, and the people that body weight is lighter is difficult to reclining, is difficult to reply and stands up after the heavier people's reclining of body weight.
It is a kind of without manual adjustments that the utility model provides, the better gravity self adaptation of more humane, versatility Revolving chair chassis, equips the swivel chair on this chassis, according to human body weight, backrest reclining restoring force has corresponding coupling, make the light or heavy people of body weight no matter easily reclining reply stand up.
Specifically, the first bearing pin of the present utility model, the second bearing pin, the 3rd bearing pin, the 4th bearing pin, seesaw, first connecting rod, second connecting rod form four-point linkage mechanism, the conduction of formation power, the chair back is connected and fixed on seesaw as the driving force of four-point linkage mechanism, the gravity that human body puts on seat support forms by being articulated with the 3rd bearing pin of bracket the restoring force that is applied to four-point linkage mechanism, and the driving force of four-point linkage mechanism and restoring force form Antagonistic Relationship.
In human body reclining process backward, the second connecting rod of the utility model four-point linkage mechanism and horizontal acute angle angle progressively reduce, bracket puts on the revolving force component increase of second connecting rod, thereby realizing gravitational load progressively increases for the restoring force moment of quadric chain, form antagonism with the driving force progressively increasing, restoring force relies on less to the elastic-restoring force of elasticity reset device, applicable crowd is wider, and the lighter or heavier people of body weight like a cork reclining and reply stands up.
Moreover, people is in the process of leaning on backward, and seat support is also followed the rotation of the chair back and moved backward, makes fit all the time correspondence position of human body back of backrest lumbar support, avoid backrest lumbar support disengaging human body waist to produce waist unsettled, also avoided clothing and backrest to produce friction.
Accompanying drawing explanation
Fig. 1 is the perspective view on the utility model chassis in embodiment 1;
Fig. 2 is the perspective view of another angle of the utility model chassis in embodiment 1;
Fig. 3 is seesaw and the schematic diagram of bracket in original state in embodiment 1;
Fig. 4 is seesaw and the schematic diagram of bracket in perk state in embodiment 1;
Fig. 5 is the fractionation structural representation of bracket and base in embodiment 1;
Fig. 6 is the fractionation structural representation of bracket and another angle of base in embodiment 1;
Fig. 7 is the structural representation of chair back seesaw locking mechanism in embodiment 1;
Fig. 8 is the latch of chair back seesaw locking mechanism in embodiment 1 schematic diagram in unlocked state;
Fig. 9 is the latch of chair back seesaw locking mechanism in embodiment 1 schematic diagram in initial angle lock-out state;
Figure 10 is the latch of chair back seesaw locking mechanism in embodiment 1 schematic diagram in maximum angle lock-out state;
Figure 11 is the structural representation of another angle of chair back seesaw locking mechanism in embodiment 1;
Figure 12 be in embodiment 1 under latch released state the fit structure schematic diagram of crank, positioning seat and fixture block in drive unit;
Figure 13 be in embodiment 1 under latch locking state the fit structure schematic diagram of crank, positioning seat and fixture block in drive unit;
Figure 14 is the perspective view on chassis in embodiment 2;
Figure 15 is the fractionation structural representation of bracket and base in embodiment 2;
Figure 16 behaves and to be sitting on swivel chair in the schematic diagram of reclining state not;
Figure 17 view while being sitting on swivel chair reclining backward of behaving;
Figure 18 is the perspective view on chassis in embodiment 3;
Figure 19 is the fractionation structural representation on chassis in embodiment 3;
Figure 20 is the structural representation on chassis in embodiment 4;
Figure 21 is the structural representation on chassis in embodiment 5;
Figure 22 is the structural representation on chassis in embodiment 6.
The specific embodiment
The specific embodiment of the present utility model is as follows:
Embodiment 1: the reference azimuth that first defines each parts of the utility model, the utility model by chassis and swivel chair when normal mounting is used, the place ahead of swivel chair is front end, and the rear of swivel chair comprises that the position at backrest place is rear end, the front end on chassis is the region away from seesaw, and the rear end on chassis is the region near seesaw.
A Revolving chair chassis, as shown in Fig. 1～Fig. 6, comprises connecting the base 1 of gas bar, in order to the bracket 2 of fixing seat support and in order to connect the seesaw 3 of the chair back, and bracket 2 is arranged in base 1, and seesaw 3 is arranged in bracket 2; Specifically, described base 1 comprises connecting the base plate 4 of gas bar, in the left and right sides of base plate 4, is vertically respectively provided with a gripper shoe 5, and gripper shoe 5 is fixedly linked with base plate 4, and 4 pairs of whole chassis of base plate and seat support, the chair back have played supporting role; Described bracket 2 comprises two block gaps substrate 6 parallel and that vertically arrange, substrate 6 is affixed on gripper shoe 5, and substrate 6 upper ends are bent to form to connect the supporting plate 7 of seat support, between two substrates 6, be fixedly connected with connecting plate 8, connecting plate 8 can be many, connecting plate 8 is connected and fixed two substrates 6, and seesaw 3 is arranged between two substrates 6.
Rear end, front end in the gripper shoe 5 of base 1 both sides are arranged with the first axis hole 9, the second axis hole 10, seesaw 3 middle parts are installed with the first bearing pin 11 and seesaw 3, and to take the first bearing pin 11 be rotating fulcrum, the first described bearing pin 11 is one whole major axis, and the two ends of the first bearing pin 11 are separately successively through being plugged in the first axis hole 9 after seesaw 3, bracket 2; The bilateral symmetry of seesaw 3 front portions is provided with first connecting rod 13, second connecting rod 14, as shown in Figure 2, described first connecting rod 13 is to be obliquely installed towards the direction that approaches seesaw 3 from lower to upper, described second connecting rod 14 is to be obliquely installed towards the direction that deviates from seesaw 3 from lower to upper, in bracket 2 motion processes, second connecting rod 14 is no more than 90 degree all the time with the angle of plumb line.
One end of first connecting rod 13 and seesaw 3 front ends are hinged by the 4th bearing pin 16, by the 3rd bearing pin 15, hinged and the 3rd bearing pin 15 interts in bracket 2 in one end of the other end of first connecting rod 13 and second connecting rod 14, the other end of second connecting rod 14 is installed with the second bearing pin 12 and the second bearing pin 12 passes bracket 2 and is plugged in the second axis hole 10, the second described bearing pin 12 is one whole major axis, and the two ends of the second bearing pin 12 are separately successively through being plugged in the second axis hole 10 after second connecting rod 14, bracket 2, because seesaw 3 drives bracket 2 motions by connecting rod, so on the substrate 6 of bracket 2 both sides each symmetry offer the rail groove 17 in order to guide bracket 2 movement locus coordinating with the first bearing pin 11 and coordinate with the second bearing pin 12 in order to dodge the hollow slots 18 of the second bearing pin 12 when bracket 2 motion, rail groove 17 is also in order to make the first bearing pin 11 with offering of hollow slots 18, the second bearing pin 12 can pass bracket 2, described rail groove 17 is to be all obliquely installed towards the direction near seesaw 3 with hollow slots 18 from lower to upper, the first bearing pin 11, the second bearing pin 12 is located in respectively in rail groove 17 and hollow slots 18, bracket 2 is connected with elasticity reset device.
Described elasticity reset device is spring 19, and one end of spring 19 is connected with bracket 2, and the other end of spring 19 is connected with base 1.Specifically, be provided with a cross bar 20 on bracket 2, two substrates 6 of the two ends of cross bar 20 and bracket 2 are fixedly linked, and spring 19 is for being obliquely installed, and cross bar 20 is hooked in the upper end of spring 19, and edge under the front end of base 1 is hooked in the lower end of spring 19.In actual use, 1～4 spring 19 can be set according to actual needs.
As shown in Figure 4, when seesaw 3 is turned over, between the first bearing pin 11, the second bearing pin 12 and base, do not produce any relative displacement, only with bracket generation relative motion, seesaw 3 front ends upwards drag first connecting rod 13 and move upward, and first connecting rod 13 pulls bracket 2 towards the oblique upper motion that approaches seesaw 3 with the 3rd bearing pin 15 of second connecting rod 14 hinged places, and the movement locus of bracket 2 carries out along rail groove 17 exactly; In whole motion process, second connecting rod 14 is no more than 90 degree all the time with the angle of plumb line, and the 3rd bearing pin 15 is all the time between the plumb line in the first bearing pin 11 and the plumb line of the second bearing pin 12.
When the chair back or seesaw 3 reclinings are during to maximum angle, the distance that bracket 2 or seat support move with the chair back is backward 15～40mm, and the best is 30mm; The chair back backward angle of reclining is 10～30 degree, and the best is 21 degree.
As shown in Fig. 1,2,3,5,6,16, under original state, people is sitting on swivel chair, under the effect of spring 19 pulling force, seat support 36, human bady gravitational, supporting plate 7 is pressed in two gripper shoes (not shown) of base 1, and the substrate 6 of bracket 2 is completely in base 1 inside; As shown in figure 17, when people leans in the process of the chair back 37 backward, as shown in Fig. 1,2,3,5,6,17, bracket 2 can drive seat support 36 interlocks, and the rotation that makes seat support 36 also follow the chair back 37 is moved backward, in this process, take human body back A place, human buttock B place is example, between human body back A place and the chair back 37, remain relative fixing between human buttock B place and seat support 36, do not produce relative displacement, thereby avoided clothing and back to produce friction.
As shown in Fig. 7,11, for the chair back being locked in to a suitable position, this chassis is also provided with chair back seesaw locking mechanism, described chair back seesaw locking mechanism comprises that being symmetricly set on one on seesaw 3 both sides arranges lockhole 21, is symmetricly set on two torsion spring a22 of base 1 inner both sides, two latches 23 and two plug housings 24; Plug housing 24 is fixedly installed on base 1, latch 23 slides to intert and coordinates on plug housing 24 and with lockhole 21, the first spring arm 25 of torsion spring a22 is connected with latch 23, and the second spring arm 26 of torsion spring a22 is connected to one for driving torsion spring a22 to carry out the drive unit of back rotation.
As shown in Fig. 7～13, described drive unit comprises crank 27, positioning seat 28 and driving lever 29, positioning seat 28 is fixedly linked with base 1, positioning seat 28 is arch and inner hollow, the upper end of positioning seat 28 inside is provided with a curved projection 30 to downward-extension, arranging of projection 30 is divided into two locating slots 31 by positioning seat 28 inner upper end, in positioning seat 28, be provided with fixture block 35, fixture block 35 is the large structure in little bottom, top, the sectional area of fixture block 35 reduces from bottom to top gradually, and bottom surface and the end face of fixture block 35 are arc, the upper end of fixture block 35 is stuck in locating slot 31, the two ends of crank 27 are connected with the second spring arm 26 of two torsion spring a22, and crank 27 connects fixture block 35 by rocking bar 32, one end of driving lever 29 is fixedly linked with fixture block 35 through the gripper shoe 5 of base 1, the other end of driving lever 29 is exposed to outside base 1, driving lever 29 is stirred in front and back, fixture block 35 is moved on in another locating slot 31 from a locating slot 31, fixture block 35 rotates and drives crank 27 to move, thereby drive two torsion spring a22 to rotate simultaneously, under the elastic force effect of torsion spring a22, the first spring arm 25 pulls latch 23 to insert corresponding lockholes 21 or from exiting to realize locking, the release of latch 23 in lockhole 21.
Described drive unit also comprises that two in order to install the column 33 of torsion spring a22, each column 33 upper end has screwed a screw 39, torsion spring a22 is set on screw 39, column 33 lower ends are fixedly linked with the base plate 4 of base 1 by an arch bridging 34, between arch bridging 34 and base 1 bottom surface, form axis hole 40, driving lever 29 is connected with fixture block 35 through one of them arch bridging 34.Meanwhile, this chassis also comprises that one in order to control the depression bar 38 of gas bar, and this depression bar 38 passes base again through turning round and ride over the installed position of gas bar after another arch bridging 34.
As shown in Figure 8, when in unlocked state, latch 23 departs from lockhole 21, and now, people sits on the seat, can be with the arbitrarily angled dependence chair back; As shown in Fig. 9,13, when the initial position in not leaning on and while making it to be in the lock state, stir driving lever 29, the resistance that makes the upper end of fixture block 35 overcome projection 30 moves on in left side locating slot 31 from the locating slot 31 on the right, fixture block 35 rotates and drives crank 27 to move, thereby drive two torsion spring a22 to rotate, under the elastic force effect of torsion spring a22, the first spring arm 25 pulls latch 23 to insert in corresponding lockhole 21 to realize the locking of latch 23 simultaneously.In the time need to adjusting the chair back to suitable position, stir driving lever 29 in the other direction, as shown in Fig. 8, Figure 12, the resistance that makes the upper end of fixture block 35 overcome projection 30 moves on in the locating slot 31 of the right from the locating slot 31 on the left side, and torsion spring a22 rotating drive latch 23 is exited in lockhole 21, now, can lean on the chair back to suitable position, in the time need to remaining on this suitable position, then repeat action above, make latch 23 insert corresponding lockhole 21, realize locking.
Fig. 9 has shown that at the chair back latch 23 inserts jacks topmost and realizes locking not during reclining; As shown in figure 10, when the chair back is in maximum elevation angle and while being locked, latch 23 inserts bottom jacks.
It should be noted that, chair back seesaw locking mechanism is not limited only to above-mentioned mechanical mechanism, can also adopt gas bar to lock at an arbitrary position; Elasticity reset device, except adopting metal spring, can also adopt rubber spring or gas bar, can be also the combination of metal spring, the gentle bar of rubber spring.
Embodiment 2: the difference of this embodiment and embodiment 1 is, as shown in Figure 14,15, the second described bearing pin 12 is two independently little axles 41, on base 1, correspondence is fixed with two bearings 42, one end of each little axle 41 is successively through being plugged in the second axis hole 10 after second connecting rod 14, hollow slots 18, and the other end of each little axle 41 is inserted in corresponding bearing 42.Like this, with respect to the form of one whole major axis, can avoid spring 19, prevent spring 19 to cause obstruction.
Embodiment 3: the difference of this embodiment and embodiment 1 is, as shown in Figure 18,19, thereby the substrate 6 of bracket 2 both sides interferes with, the part of the second axis hole 10, the second bearing pin 12 is cut makes bracket 2 avoid the second axis hole 10 and the second bearing pin 12, the second bearing pins 12 are directly plugged in the second axis hole 10.
Embodiment 4: the difference of this embodiment and embodiment 1 is, as shown in figure 20, the 3rd bearing pin 15 connects elasticity reset device, the 3rd bearing pin 15 is one whole major axis, described elasticity reset device is spring 19, one end of spring 19 hangs on the 3rd bearing pin 15, and the other end of spring 19 hooks the base plate 4 of base 1.
Embodiment 5: the difference of this embodiment and embodiment 1 is, as shown in figure 21, described elasticity reset device is torsion spring b43, torsion spring b43 is set on the first bearing pin 11, described seesaw 3 comprise the side plate 44 of two spaced and parallel and connect two side plates 44 and in order to connect the connecting plate 45 of the chair back, connecting plate 45 is positioned at outside base, on the base plate 4 of base, be fixed with baffle plate 46, turn round arm 47 for one of torsion spring b and offset with baffle plate 46, another of torsion spring b turned round arm 48 and offseted with connecting plate 45.
Embodiment 6: the difference of this embodiment and embodiment 1 is, as shown in figure 22, described elasticity reset device is whole cylindrical rubber spring 49, described rubber spring 49 comprises the rubber layer 50 being circumferentially fixed on the first bearing pin 11, at the outer fixed cover of rubber layer 50, be provided with cylindrical outer casing 51, on cylindrical outer casing 51, be fixed with a pair of engaging lug 52, the first axis hole of the first described bearing pin 11 inserted bases 1 is also fixedly linked with base 1, described seesaw 3 comprise the side plate 44 of two spaced and parallel and connect two side plates 44 and in order to connect the connecting plate 45 of the chair back, connecting plate 45 is positioned at outside base 1, on connecting plate 45, be fixed with a pedestal 53, described engaging lug 52 is hinged with pedestal 53.
Claims (24)
1. a Revolving chair chassis, it is characterized in that: the base that comprises connecting gas bar, in order to the bracket of fixing seat support and in order to connect the seesaw of the chair back, bracket is arranged in base, seesaw is arranged in bracket, seesaw middle part is installed with the first bearing pin and seesaw be take the first bearing pin as rotating fulcrum, the first bearing pin passes bracket and is connected with base, the bilateral symmetry of seesaw front portion is provided with first connecting rod, second connecting rod, one end of first connecting rod and seesaw front end are hinged by the 4th bearing pin, hinged and the 3rd bearing pin is connected with bracket by the 3rd bearing pin for the other end of first connecting rod and one end of second connecting rod, the other end of second connecting rod is installed with the second bearing pin and the second bearing pin passes or avoids being connected with base after bracket, bilateral symmetry at bracket offers the rail groove in order to guide bracket movement locus coordinating with the first bearing pin, the first bearing pin is located in rail groove, this chassis also comprises the elasticity reset device that makes bracket set back after seesaw prizes movement of bracket.
2. a kind of Revolving chair chassis according to claim 1, is characterized in that: the bilateral symmetry of bracket offer coordinate with the second bearing pin dodge the hollow slots of the second bearing pin when at movement of bracket, the second bearing pin is located in hollow slots.
3. a kind of Revolving chair chassis according to claim 1, is characterized in that: thus the cut bracket that makes of the part that interferes with the second bearing pin of bracket both sides is avoided the second bearing pin.
4. a kind of Revolving chair chassis according to claim 1, is characterized in that: the first described bearing pin is one whole major axis, and the two ends of the first bearing pin are separately successively through being connected with base after seesaw, rail groove.
5. a kind of Revolving chair chassis according to claim 1, it is characterized in that: the first described bearing pin is two independently minor axises, on base, correspondence is fixed with two supports, one end of each minor axis is successively through being connected with base after seesaw, rail groove, and the other end of each minor axis is inserted in corresponding support.
6. a kind of Revolving chair chassis according to claim 2, is characterized in that: the second described bearing pin is one whole major axis, and the two ends of the second bearing pin are separately successively through being connected with base after second connecting rod, hollow slots.
7. a kind of Revolving chair chassis according to claim 3, is characterized in that: the second described bearing pin is one whole major axis, and the two ends of the second bearing pin are connected with base through after second connecting rod separately.
8. a kind of Revolving chair chassis according to claim 2, it is characterized in that: the second described bearing pin is two independently little axles, on base, correspondence is fixed with two bearings, one end of each little axle is successively through being connected with base after second connecting rod, hollow slots, and the other end of each little axle is inserted in corresponding bearing.
9. a kind of Revolving chair chassis according to claim 3, it is characterized in that: the second described bearing pin is two independently little axles, on base, correspondence is fixed with two bearings, and one end of each little axle is connected with base through after second connecting rod, and the other end of each little axle is inserted in corresponding bearing.
10. according to a kind of Revolving chair chassis described in claim 1 or 4 or 5, it is characterized in that: the first bearing pin is connected and refers to base: the bilateral symmetry at base rear end is provided with the first axis hole, and the first bearing pin is plugged in the first axis hole.
11. according to a kind of Revolving chair chassis described in claim 1 or 2 or 3 or 6 or 7 or 8 or 9, it is characterized in that: the second bearing pin is connected and refers to base: the bilateral symmetry at base front end is provided with the second axis hole, and the second bearing pin is plugged in the second axis hole.
12. a kind of Revolving chair chassis according to claim 1, is characterized in that: the 3rd bearing pin is connected and refers to bracket: the 3rd bearing pin interts in bracket.
13. a kind of Revolving chair chassis according to claim 1, it is characterized in that: described base comprises connecting the base plate of gas bar, the left and right sides at base plate is vertically respectively provided with a gripper shoe, gripper shoe and base plate are fixedly linked, and the first bearing pin, the second bearing pin are to be connected with the gripper shoe of base; Described bracket comprises the substrate that two block gaps are parallel and vertically arrange, and substrate is affixed on gripper shoe, and substrate upper end is bent to form to connect the supporting plate of seat support, between two substrates, is fixedly connected with connecting plate, and seesaw is arranged between two substrates.
14. a kind of Revolving chair chassis according to claim 1, it is characterized in that: described first connecting rod is to be obliquely installed towards the direction that approaches seesaw from lower to upper, described second connecting rod is to be obliquely installed towards the direction that deviates from seesaw from lower to upper, in movement of bracket process, the angle of second connecting rod and plumb line is no more than 90 degree all the time.
15. a kind of Revolving chair chassis according to claim 2, is characterized in that: described rail groove and hollow slots are to be all obliquely installed towards the direction near seesaw from lower to upper.
16. a kind of Revolving chair chassis according to claim 1, it is characterized in that: this chassis is also provided with chair back seesaw locking mechanism, described chair back seesaw locking mechanism comprises that being symmetricly set on one on seesaw both sides arranges lockhole, is symmetricly set on two torsion spring a, two latches and two plug housings of the inner both sides of base; Plug housing is fixedly installed on base, and latch slides to intert and coordinates on plug housing and with lockhole, and the first spring arm of torsion spring a is connected with latch, and the second spring arm of torsion spring a is connected to one for driving torsion spring a to carry out the drive unit of back rotation.
17. a kind of Revolving chair chassis according to claim 16, it is characterized in that: described drive unit comprises crank, positioning seat and driving lever, positioning seat and base are fixedly linked, positioning seat is arch and inner hollow, the upper end of positioning seat inside is provided with a projection to downward-extension, arranging of projection is divided into two locating slots by positioning seat inner upper end, in positioning seat, be provided with fixture block, the upper end of fixture block is stuck in locating slot, the two ends of crank are connected with the second spring arm of two torsion spring a, and crank connects fixture block by rocking bar, one end of driving lever is fixedly linked through base and fixture block, the other end of driving lever is exposed to outside base, driving lever is stirred in front and back, fixture block is moved on in another locating slot from a locating slot, fixture block rotates and drives crank to move, thereby drive two torsion spring a to rotate simultaneously, under the elastic force effect of torsion spring a, the first spring arm pulls latch to insert corresponding lockhole or from exiting to realize locking, the release of latch in lockhole.
18. a kind of Revolving chair chassis according to claim 17, it is characterized in that: described drive unit also comprises that two in order to install the column of torsion spring a, each column upper end has screwed a screw, torsion spring a is set on screw, column lower end is put up a bridge and is fixedly linked with base by an arch, between arch bridging and base end face, form axis hole, driving lever is put up a bridge and is connected with fixture block through one of them arch.
19. a kind of Revolving chair chassis according to claim 1, is characterized in that: bracket connects elasticity reset device, and described elasticity reset device is spring, and one end of spring is connected with bracket, and the other end of spring is connected with base.
20. a kind of Revolving chair chassis according to claim 19, is characterized in that: on bracket, be provided with a cross bar, two ends and the bracket of cross bar are fixedly linked, and cross bar is hooked in one end of spring, and the other end of spring hooks base.
21. a kind of Revolving chair chassis according to claim 1, is characterized in that: the 3rd bearing pin connects elasticity reset device, and described elasticity reset device is spring, and one end of spring is connected with the 3rd bearing pin, and the other end of spring hooks base.
22. a kind of Revolving chair chassis according to claim 1, it is characterized in that: described elasticity reset device is torsion spring b, torsion spring b is set on the first bearing pin, described seesaw comprise the side plate of two spaced and parallel and connect two side plates and in order to connect the connecting plate of the chair back, connecting plate is positioned at outside base, on the bottom surface of base, be provided with baffle plate, of torsion spring b turns round arm and baffle plate offsets, and another of torsion spring b turns round arm and connecting plate offsets.
23. a kind of Revolving chair chassis according to claim 1, it is characterized in that: described elasticity reset device is rubber spring, described rubber spring comprises the rubber layer being circumferentially fixed on the first bearing pin, outside rubber layer, fixed cover is provided with cylindrical outer casing, on cylindrical outer casing, be fixed with a pair of engaging lug, described the first bearing pin and base are fixedly linked, and described engaging lug and seesaw are hinged.
24. a kind of Revolving chair chassis according to claim 23, it is characterized in that: described seesaw comprise the side plate of two spaced and parallel and connect two side plates and in order to connect the connecting plate of the chair back, connecting plate is positioned at outside base, on connecting plate, be fixed with a pedestal, described engaging lug and pedestal are hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320592754.1U CN203555399U (en) | 2013-09-24 | 2013-09-24 | Swivel chair base plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320592754.1U CN203555399U (en) | 2013-09-24 | 2013-09-24 | Swivel chair base plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203555399U true CN203555399U (en) | 2014-04-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320592754.1U Expired - Fee Related CN203555399U (en) | 2013-09-24 | 2013-09-24 | Swivel chair base plate |
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| Country | Link |
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| CN (1) | CN203555399U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104223821A (en) * | 2013-09-24 | 2014-12-24 | 浙江永艺家具股份有限公司 | Base plate of swivel chair |
| CN107666843A (en) * | 2015-03-14 | 2018-02-06 | 赫尔曼米勒有限公司 | For the mechanical structure sub-assembly of chair and the chair with this mechanical structure sub-assembly |
| CN109640745A (en) * | 2016-07-08 | 2019-04-16 | 高飞模工业有限责任公司 | Leaning device for chair |
| CN110087508A (en) * | 2016-10-14 | 2019-08-02 | 托普斯塔有限公司 | Chair |
-
2013
- 2013-09-24 CN CN201320592754.1U patent/CN203555399U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104223821A (en) * | 2013-09-24 | 2014-12-24 | 浙江永艺家具股份有限公司 | Base plate of swivel chair |
| WO2015043472A1 (en) * | 2013-09-24 | 2015-04-02 | 浙江永艺家具股份有限公司 | Chassis for swivel chair |
| CN104223821B (en) * | 2013-09-24 | 2017-01-11 | 永艺家具股份有限公司 | Base plate of swivel chair |
| CN107666843A (en) * | 2015-03-14 | 2018-02-06 | 赫尔曼米勒有限公司 | For the mechanical structure sub-assembly of chair and the chair with this mechanical structure sub-assembly |
| CN109640745A (en) * | 2016-07-08 | 2019-04-16 | 高飞模工业有限责任公司 | Leaning device for chair |
| CN110087508A (en) * | 2016-10-14 | 2019-08-02 | 托普斯塔有限公司 | Chair |
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Address after: 313300 Zhejiang City, Huzhou Province, Anji County, West Wing Road, No. 1 Patentee after: UE FURNITURE CO., LTD. Address before: 313300 Zhejiang City, Huzhou Province, Anji County, West Wing Road, No. 1 Patentee before: Zhejiang Yongyi Furniture Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20180924 |
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