CN203576021U - Support rack driving mechanism used in swivel chair chassis - Google Patents

Support rack driving mechanism used in swivel chair chassis Download PDF

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Publication number
CN203576021U
CN203576021U CN201320602362.9U CN201320602362U CN203576021U CN 203576021 U CN203576021 U CN 203576021U CN 201320602362 U CN201320602362 U CN 201320602362U CN 203576021 U CN203576021 U CN 203576021U
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CN
China
Prior art keywords
bearing pin
bracket
base
connecting rod
seesaw
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Withdrawn - After Issue
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CN201320602362.9U
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Chinese (zh)
Inventor
何基
阮正富
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Zhejiang Yongyi Furniture Co Ltd
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Zhejiang Yongyi Furniture Co Ltd
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Priority to CN201320602362.9U priority Critical patent/CN203576021U/en
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Publication of CN203576021U publication Critical patent/CN203576021U/en
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Abstract

The utility model discloses a support rack driving mechanism used in a swivel chair chassis. The bracket driving mechanism comprises a base, a support rack and a rocker plate, wherein the support rack and the rocker plate are arranged inside the base; the middle part of the rocker plate is hinged with the base through a first hinge pin; a first connecting rod and a second connecting rod are arranged in the front part of the rocker plate; one end of the first connecting rod is hinged with the front end of the rocker plate; the other end of the first connecting rod is hinged with one end of the second connecting rod through a third hinge pin and the third hinge pin is connected with the support rack; the other end of the second connecting rod is hinged with the base through a second hinge pin; track grooves matched with the first hinge pin and used for guiding the motion trail of the support rack are symmetrically formed in two sides of the support rack; and the first hinge pin penetrates through the track grooves; the rocker plate is rotated to drive the support rack to move along the trail of the track grooves through the first connecting rod and the second connecting rod. By adopting the support rack driving mechanism disclosed by the utility model, the tilting restoring force of a chair backrest can be correspondingly matched according to weights of human bodies, so that people no matter heavy or light can easily tilt and sit upright.

Description

A kind of carriage drive mechanism for Revolving chair chassis
Technical field
The utility model relates to swivel chair, office chair technical field, particularly a kind of carriage drive mechanism for 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, the conical pipe that connects air pressure rod in the middle of sliding seat is welded in sliding seat by Taper Pipe fixed head 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 contact air pressure rod of adjustable plate, 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 be sitting in when reclining is backward installed on the seat of above-mentioned pallet, 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 the crowd that is suitable for 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.
The problem that above-mentioned chassis exists is, in human body reclining process backward, in identical seat support gravitational load situation, the restoring force moment on chassis is all progressively reduce or remain unchanged, and owing to putting on the pressure of the chair back in reclining process, becomes large, it is large that driving force becomes, cause restoring force to be not enough to resist driving force, and restoring force too relies on the elastic recovery of elasticity reset device, the crowd that is therefore suitable for is limited in scope, the people that body weight is lighter is difficult to reclining, is difficult to reply stand up after the heavier people's reclining of body weight.
Therefore need to design the Revolving chair chassis that a kind of restoring force is little to the elastic-restoring force degree of dependence of elasticity reset device, can the wider crowd of the scope of application, reclining and reply are stood up like a cork to make the lighter or heavier people of body weight.Such chassis substantially framework 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 drives by seesaw, for bracket is resetted, bracket or seesaw are connected with elasticity reset device, in such chassis, the driving mechanism of bracket is the emphasis of design, and it is the key point that can address the above problem.
Summary of the invention
The utility model has overcome existing deficiency in above-mentioned prior art, and a kind of carriage drive mechanism that reasonable restoring force can be provided in movement of bracket process is provided; Thereby make the chair back in reclining 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 carriage drive mechanism for 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, seesaw is all arranged in base, seesaw middle part is hinged by the first bearing pin and base, the front portion of seesaw is provided with first connecting rod, second connecting rod, one end of first connecting rod and seesaw front end are hinged, 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 hinged by the second bearing pin and base, in the bilateral symmetry of bracket, offer 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, seesaw rotates by first, second connecting rod drives the orbiting motion of bracket along rail groove.
The second bearing pin has two kinds of forms not hinder movement of bracket, as preferably, the second bearing pin through or avoid being connected with base after 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 plugged in the second axis hole 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: in the bilateral symmetry of base rear end, be provided with the first axis hole, the first bearing pin is plugged in the first axis hole.
As preferably, the second bearing pin is connected and refers to base: in the bilateral symmetry of base front end, be provided with the second axis hole, 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 two block gaps substrate parallel and that 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 entirety 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 the backrest that is connected in 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, form antagonism with the driving force progressively increasing along with the reclining of backrest, restoring force relies on less to the elastic-restoring force of elasticity reset device, be applicable to different fat or thin crowds' needs.
In order to allow bracket move along diagonal upward direction all the time, as preferably, described rail groove is to be all obliquely installed towards the direction of close seesaw with hollow slots from lower to upper.
A kind of carriage drive mechanism for 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, seesaw is all arranged in base, seesaw middle part is hinged by the first bearing pin and base, the front portion of seesaw is provided with first connecting rod, second connecting rod, one end of first connecting rod and seesaw front end are hinged, 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 hinged by the second bearing pin and base, in the bilateral symmetry of bracket, offer the rail groove in order to guide bracket movement locus, on base, be provided with the guide shaft coordinating with rail groove, described guide shaft is inserted in rail groove, seesaw rotates by first, second connecting rod drives the orbiting motion of bracket along rail groove.In such mode, the first bearing pin, the second bearing pin all do not play guide function to movement of bracket track, but are coordinated with the rail groove on bracket by the guide shaft arranging in addition on base, make the bracket can be along the orbiting motion of rail groove.
As preferably, the first bearing pin through or avoid being connected with base after bracket, same, the second bearing pin passes or avoids being connected with base after bracket.Thus, the first bearing pin, the second bearing pin all do not produce and hinder the motion of bracket.
As preferably, the first bearing pin refers to through bracket: in the bilateral symmetry of bracket, offer hollow slots one, the first bearing pin of dodging the first bearing pin when at movement of bracket coordinating with the first bearing pin and be located in hollow slots one; The first bearing pin is avoided bracket and is referred to: thus the cut bracket that makes of the part that interferes with the first bearing pin of bracket both sides is avoided the first bearing pin.
As preferably, the second bearing pin refers to through bracket: in the bilateral symmetry of bracket, offer hollow slots two, the second bearing pins of dodging the second bearing pin when at movement of bracket that coordinate with the second bearing pin and be located in hollow slots two; The second bearing pin is avoided bracket and is referred to: 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.
Adopted design concept of the present utility model and the beneficial effect of technique scheme to be:
Carriage drive of the present utility model mechanism can be according to human body weight, makes chair back-rest inclination restoring force have corresponding coupling, make the light or heavy people of body weight no matter easily reclining reply stand up.
Specifically, the bearing pin of the each pin joint of the utility model, 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 the driving force of seesaw as four-point linkage mechanism, the gravity that human body puts on seat support forms by the 3rd bearing pin that is articulated with 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, be suitable for crowd wider, and the lighter or heavier people of body weight like a cork reclining and reply stands up.
Moreover, equipped the seat on the utility model carriage drive mechanism and chassis, people in the process of leaning on backward, seat support is also followed the rotation of the chair back and is moved backward, make 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 perspective view on chassis in embodiment 2;
Fig. 8 is the fractionation structural representation of bracket and base in embodiment 2;
Fig. 9 behaves and is sitting on swivel chair in the schematic diagram of reclining state not;
Figure 10 view while being sitting on swivel chair reclining backward of behaving;
Figure 11 is the perspective view on chassis in embodiment 3;
Figure 12 is the fractionation structural representation on chassis in embodiment 3.
The specific embodiment
The specific embodiment of the present utility model is as follows:
Embodiment 1: the reference azimuth that first defines the each parts of the utility model, the utility model by chassis and swivel chair when normal mounting is used, the front 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 carriage drive mechanism for 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, seesaw 3 are arranged in base 1; 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 base plate 4 has played supporting role to whole chassis and seat support, the chair back; 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 take the first bearing pin 11 as 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 to move by connecting rod, so on the substrate 6 of bracket 2 both sides each symmetry offer coordinating in order to the rail groove 17 of guide bracket 2 movement locus and with the second bearing pin 12 of coordinating with the first bearing pin 11 in order to dodge the hollow slots 18 of the second bearing pin 12 when bracket 2 moves, 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, rail groove 17 coordinates the movement locus in order to guide bracket with the first bearing pin 11, and hollow slots 18 is only in order to make the second bearing pin 12 not hamper movement of bracket through bracket.
Bracket 2 is connected with elasticity reset device, and 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. 1,2,3,5,6,9, 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 10, when people leans in the process of the chair back 37 backward, as shown in Fig. 1,2,3,5,6,10, 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 as 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.
Embodiment 2: the difference of this embodiment and embodiment 1 is, as shown in Figure 7,8, 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 11,12, 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 carriage drive mechanism of the present embodiment and the difference of embodiment 1 are, the first bearing pin does not coordinate with rail groove, but be provided with in addition guide shaft on base, coordinate with rail groove, specifically say, this carriage drive mechanism comprises 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, seesaw is all arranged in base, seesaw middle part is hinged by the first bearing pin and base, the front portion of seesaw is provided with first connecting rod, second connecting rod, one end of first connecting rod and seesaw front end are hinged, 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 hinged by the second bearing pin and base, in the bilateral symmetry of bracket, offer the rail groove in order to guide bracket movement locus, on base, be provided with the guide shaft coordinating with rail groove, described guide shaft is inserted in rail groove, seesaw rotates by first, second connecting rod drives the orbiting motion of bracket along rail groove.
And the first bearing pin passes or avoids after bracket being connected with base, same, the second bearing pin passes or avoids being connected with base after bracket.
The first bearing pin refers to through bracket: in the bilateral symmetry of bracket, offer hollow slots one, the first bearing pin of dodging the first bearing pin when at movement of bracket coordinating with the first bearing pin and be located in hollow slots one; The first bearing pin is avoided bracket and is referred to: thus the cut bracket that makes of the part that interferes with the first bearing pin of bracket both sides is avoided the first bearing pin.
The second bearing pin refers to through bracket: in the bilateral symmetry of bracket, offer hollow slots two, the second bearing pins of dodging the second bearing pin when at movement of bracket that coordinate with the second bearing pin and be located in hollow slots two; The second bearing pin is avoided bracket and is referred to: 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.

Claims (20)

1. the carriage drive mechanism for 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, seesaw is all arranged in base, seesaw middle part is hinged by the first bearing pin and base, the front portion of seesaw is provided with first connecting rod, second connecting rod, one end of first connecting rod and seesaw front end are hinged, 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 hinged by the second bearing pin and base, in the bilateral symmetry of bracket, offer 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, seesaw rotates by first, second connecting rod drives the orbiting motion of bracket along rail groove.
2. a kind of carriage drive mechanism for Revolving chair chassis according to claim 1, is characterized in that: the second bearing pin passes or avoids being connected with base after bracket.
3. a kind of carriage drive mechanism for Revolving chair chassis according to claim 2, it 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.
4. a kind of carriage drive mechanism for Revolving chair chassis according to claim 2, 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.
5. a kind of carriage drive mechanism for 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.
6. a kind of carriage drive mechanism for 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.
7. a kind of carriage drive mechanism for 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 separately successively through being connected with base after second connecting rod, hollow slots.
8. a kind of carriage drive mechanism for Revolving chair chassis according to claim 4, is characterized in that: the second described bearing pin is one whole major axis, and the two ends of the second bearing pin are plugged in the second axis hole through after second connecting rod separately.
9. a kind of carriage drive mechanism for 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, 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.
10. a kind of carriage drive mechanism for Revolving chair chassis according to claim 4, 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 connected with base through after second connecting rod, and the other end of each little axle is inserted in corresponding bearing.
11. according to a kind of carriage drive mechanism for Revolving chair chassis described in claim 1 or 5 or 6, it is characterized in that: the first bearing pin is connected and refers to base: in the bilateral symmetry of base rear end, be provided with the first axis hole, the first bearing pin is plugged in the first axis hole.
12. according to a kind of carriage drive mechanism for Revolving chair chassis described in claim 1 or 2 or 3 or 4 or 7 or 8 or 9 or 10, it is characterized in that: the second bearing pin is connected and refers to base: in the bilateral symmetry of base front end, be provided with the second axis hole, the second bearing pin is plugged in the second axis hole.
13. a kind of carriage drive mechanisms for 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.
14. a kind of carriage drive mechanisms for 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 two block gaps substrate parallel and that 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.
15. a kind of carriage drive mechanisms for 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.
16. a kind of carriage drive mechanisms for Revolving chair chassis according to claim 3, 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.
17. 1 kinds of carriage drive mechanisms for 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, seesaw is all arranged in base, seesaw middle part is hinged by the first bearing pin and base, the front portion of seesaw is provided with first connecting rod, second connecting rod, one end of first connecting rod and seesaw front end are hinged, 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 hinged by the second bearing pin and base, in the bilateral symmetry of bracket, offer the rail groove in order to guide bracket movement locus, on base, be provided with the guide shaft coordinating with rail groove, described guide shaft is inserted in rail groove, seesaw rotates by first, second connecting rod drives the orbiting motion of bracket along rail groove.
18. a kind of carriage drive mechanisms for Revolving chair chassis according to claim 17, is characterized in that: the first bearing pin passes or avoids being connected with base after bracket, same, and the second bearing pin passes or avoids being connected with base after bracket.
19. a kind of carriage drive mechanisms for Revolving chair chassis according to claim 18, it is characterized in that: the first bearing pin refers to through bracket: in the bilateral symmetry of bracket, offer hollow slots one, the first bearing pin of dodging the first bearing pin when at movement of bracket coordinating with the first bearing pin and be located in hollow slots one; The first bearing pin is avoided bracket and is referred to: thus the cut bracket that makes of the part that interferes with the first bearing pin of bracket both sides is avoided the first bearing pin.
20. a kind of carriage drive mechanisms for Revolving chair chassis according to claim 18, it is characterized in that: the second bearing pin refers to through bracket: in the bilateral symmetry of bracket, offer hollow slots two, the second bearing pins of dodging the second bearing pin when at movement of bracket that coordinate with the second bearing pin and be located in hollow slots two; The second bearing pin is avoided bracket and is referred to: 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.
CN201320602362.9U 2013-09-24 2013-09-24 Support rack driving mechanism used in swivel chair chassis Withdrawn - After Issue CN203576021U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103504845A (en) * 2013-09-24 2014-01-15 浙江永艺家具股份有限公司 Bracket driving mechanism for chassis of swivel chair
CN104207520A (en) * 2014-09-18 2014-12-17 浙江永艺家具股份有限公司 Chair back and rocker locking mechanism for chassis of swivel chair

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103504845A (en) * 2013-09-24 2014-01-15 浙江永艺家具股份有限公司 Bracket driving mechanism for chassis of swivel chair
WO2015043474A1 (en) * 2013-09-24 2015-04-02 浙江永艺家具股份有限公司 Support frame driving mechanism for swivel chair chassis
CN103504845B (en) * 2013-09-24 2015-10-07 浙江永艺家具股份有限公司 A kind of carriage drive mechanism for Revolving chair chassis
CN104207520A (en) * 2014-09-18 2014-12-17 浙江永艺家具股份有限公司 Chair back and rocker locking mechanism for chassis of swivel chair
CN104207520B (en) * 2014-09-18 2017-02-22 永艺家具股份有限公司 Chair back and rocker locking mechanism for chassis of swivel chair

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