CN107625324A - A kind of chair bottom and office chair - Google Patents
A kind of chair bottom and office chair Download PDFInfo
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- CN107625324A CN107625324A CN201610596293.3A CN201610596293A CN107625324A CN 107625324 A CN107625324 A CN 107625324A CN 201610596293 A CN201610596293 A CN 201610596293A CN 107625324 A CN107625324 A CN 107625324A
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- bearing pin
- seesaw
- bracket
- chair
- base
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- 230000037396 body weight Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 13
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- 230000003042 antagnostic effect Effects 0.000 description 2
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- 238000005194 fractionation Methods 0.000 description 2
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- 229910000831 Steel Inorganic materials 0.000 description 1
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Abstract
The invention discloses a kind of chair bottom and office chair, chair bottom, including base, bracket and seesaw, bracket is arranged in base, seesaw is arranged in bracket, the first bearing pin is installed with the middle part of seesaw and seesaw is using the first bearing pin as rotating fulcrum, first bearing pin is connected through bracket and with base, seesaw front end both sides symmetrically offer gain, the second bearing pin is equipped with gain and the second bearing pin is connected with bracket, the rail groove coordinated with the first bearing pin is symmetrically offered in the both sides of bracket, first bearing pin is located in rail groove, the chassis also includes enabling the elasticity reset device that bracket sets back after seesaw prizes movement of bracket；Additionally provide a kind of office chair for being provided with above-mentioned chassis；Equip the office chair on this chassis so that no matter the light or heavy people of body weight easily can stand up in reclining reply；Chassis structure is in turn simplify simultaneously, part is few, easy for installation, installation effectiveness is high and cost is low.
Description
Technical field
The present invention relates to swivel chair, office chair technical field, more particularly to a kind of chair bottom.
Background technology
Chair bottom, also referred to as Revolving chair chassis or Revolving chair tray, a weight being installed in below swivel chair or office chair seat cushion
Part, the lifting of seat cushion are wanted, the elevation angle regulation of backrest is all completed by chassis.
Current Revolving chair chassis is generally to be made up of parts such as top tray, lower joist, rotating shaft and spring assemblies, top rotary table
After being fixed with swivel chair seat back, swivel chair can make appropriate reclining around the shaft, and can actively reply, and user is had comfort.Example
Such as, Chinese patent discloses a kind of pallet (Patent No.：02287885.8), mainly including bottom plate, sliding seat, conical pipe and tune
Regulating device, sliding seat are movably connected in bottom plate, the conical pipe of connection air pressure rod among sliding seat, by Taper Pipe fixed plate and cone
Shape pipe is welded in sliding seat together；Described adjusting means includes adjusting rod, adjustable plate, torsion spring a, torsion spring a fixed plates, adjusts
Pole is interspersed in sliding seat, and adjustable plate is fixedly connected on one end in adjusting rod insertion sliding seat, and the one side of adjustable plate connects
Air pressure rod is touched, another side is connected with torsion spring a；Spin-ended of adjustable plate is provided with the another side of adjustable plate.
The adjusting means of above-mentioned Revolving chair tray is adjusted completely by torque spring, required for the different people of body weight
The power needs for the torque spring wanted are different, product is not had good versatility.For this problem, Patent No.：
The Chinese patent of " 201410479142.0 " discloses a kind of Revolving chair chassis, including base, bracket and seesaw, bracket are arranged on bottom
In seat, seesaw is arranged in bracket, and using the first bearing pin as rotating fulcrum, the first bearing pin is connected through bracket and with base seesaw,
Seesaw front portion prizes bracket by first connecting rod, second connecting rod, and first connecting rod and second connecting rod pass through the 3rd hinge and the
Three bearing pins are connected with bracket, second connecting rod be installed with the second bearing pin and the second bearing pin pass through or avoid bracket after be connected with base,
The both sides of bracket symmetrically offer rail groove, and the first bearing pin is located in rail groove, and the chassis is also included when seesaw prizes bracket
The elasticity reset device for enabling bracket set back after motion.
First bearing pin, the second bearing pin, the 3rd bearing pin, the 4th bearing pin, seesaw, first connecting rod, the second connecting rod on above-mentioned chassis
Four-point linkage mechanism is formed, forms the conduction of power, the chair back is connected and fixed on driving force of the seesaw as four-point linkage mechanism, human body
Put on the restoring force that threeth bearing pin formation of the gravity of seat support by being articulated with bracket is applied to four-point linkage mechanism, 4 points of companies
The driving force and restoring force of linkage form Antagonistic Relationship.
During human body backward reclining, the second connecting rod of four-point linkage mechanism progressively subtracts with horizontal acute angle
Small, then bracket puts on the revolving force component increase of second connecting rod, so as to realize reply of the gravitational load for quadric chain
Force square incrementally increases, and is formed and resisted with the driving force that incrementally increases, restoring force to the elastic-restoring force of elasticity reset device according to
Bad smaller, applicable crowd's scope is wider, and the lighter or heavier people of body weight easily can stand up in reclining and reply.
But above-mentioned chassis has the drawback that part is more, installation inconvenience, cost is higher, therefore, it is necessary to develop one
The more simple chassis of structure is planted to realize equal function.
The content of the invention
Instant invention overcomes the deficiency in the presence of above-mentioned prior art, there is provided a kind of structure is more simple, part is few,
The chair bottom that the people for meeting different weight easy for installation, that cost is low uses, the chassis not only solves conventional seat
Backrest reclining when, the discomfort brought of lumbar supporting position skew, so as to improve comfort level；And in chair back-rest inclination mistake
Cheng Zhong, the gravity for loading on seat support are transmitted to the ratio of chair back restoring force and incrementally increased, and it is reasonable to be provided all the time in whole process
Backrest restoring force so that the lighter or heavier people of body weight easily can stand up in reclining and reply.
The technical proposal of the invention is realized in this way：
A kind of chair bottom, including base, the bracket to fixed seat support and to connect the seesaw of the chair back, bracket is set
To put in base, seesaw is arranged in bracket, is installed with the first bearing pin in the middle part of seesaw and seesaw is using the first bearing pin as rotating fulcrum, the
One bearing pin is connected through bracket and with base, and seesaw front end both sides symmetrically offer gain, and the second bearing pin is equipped with gain
And second bearing pin be connected with bracket, the rail groove coordinated with the first bearing pin is symmetrically offered in the both sides of bracket, the first bearing pin wears
It is located in rail groove, the chassis also includes the elastic reset dress for enabling bracket set back after seesaw prizes movement of bracket
Put.
Preferably, the both sides of seesaw front portion are arranged with controls connecting rod, one end of controls connecting rod rotates with the second bearing pin
Connection, the other end of controls connecting rod are connected by the 3rd bearing pin with base rotation.Controls connecting rod can be with the motion rail of specification bracket
Mark, movement of bracket path generation is determined, will not run chaotically or shake.
Preferably, the first described bearing pin is a whole root long axle, the both ends of the first bearing pin each sequentially pass through seesaw, rail
It is connected after road groove with base.It can so ensure that it can provide enough intensity, enable seesaw to rotate freely.
Preferably, the first described bearing pin is two independent short axles, two supports are correspondingly fixed with base,
One end of each short axle is connected after sequentially passing through seesaw, rail groove with base, and the other end of each short axle is inserted in corresponding support
It is interior.Make chassis interior more succinct using such structure, and the first bearing pin is supported by support, meets wanting for intensity
Ask.
Preferably, the second described bearing pin is a whole root long axle, the both ends of the second bearing pin each pass through after gain with support
Frame is connected.It equally can so ensure that it can provide enough intensity, enable the second bearing pin pull-up bracket.
Refer to preferably, the first bearing pin is connected with base：It is arranged with the first axis hole in the both sides of base rear end, first
Bearing pin is plugged in the first axis hole.
Refer to preferably, the second bearing pin is connected with bracket：It is arranged with the second axis hole in the both sides of bracket front end, second
Bearing pin is plugged in the second axis hole.
Preferably, described base is included to connect the bottom plate of gas bar, in the left and right sides of bottom plate vertically
A supporting plate is respectively provided with, supporting plate is fixedly linked with bottom plate, and the first bearing pin is connected with the supporting plate of base；Described bracket bag
Include to connect the supporting plate of seat support, supporting plate both sides extend downwardly the auxiliary section coordinated with first, second bearing pin.Base is by bracket
It is coated on wherein, it is rational in infrastructure, it is overall more attractive in appearance.
In order to allow bracket diagonally to go up direction motion all the time, preferably, described rail groove is towards from lower to upper
It is obliquely installed close to the direction of seesaw, described gain is towards the direction away from seesaw and is obliquely installed from lower to upper.In human body
Backward during reclining, human body back applies driving force to the backrest for being connected to seesaw, and seesaw is rotated to prize the second bearing pin fortune
It is dynamic, while gain plays a part of avoiding the second bearing pin, allows the second bearing pin to pull bracket to move upwards so that bracket applies
In the second bearing pin revolving force component increase, so as to realize that gravitational load incrementally increases for the restoring force torque of seesaw, with
The driving force that the reclining of backrest incrementally increases and form confrontation, restoring force the elastic-restoring force of elasticity reset device is relied on compared with
It is small, it is adapted to the needs of different fat or thin crowds.
Preferably, bracket connects elasticity reset device, described elasticity reset device is spring, one end of spring and support
Frame is connected, and the other end of spring is connected with base.Restoring force is provided for the reply of seesaw and bracket by spring, it is simple to have again
Effect.
Preferably, described elasticity reset device is torsion spring, torsion spring is set on the first bearing pin, a torque arm of torsion spring
Offseted with base, another torque arm and the seesaw synchronous axial system of torsion spring.When seesaw is prized, a torque arm of torsion spring is kept not
Dynamic, another torque arm of torsion spring is moved with seesaw so that spacing reduces between two torque arm, and thus generation makes the bullet that seesaw resets
Power.
Preferably, described seesaw include two side plates of two spaced and parallel side plates and connection and to connect
The connecting plate of the chair back, connecting plate are located at outside base, and baffle plate is provided with the bottom surface of base, horizontal stroke is connected between two side plates
Bar, a torque arm of torsion spring offset with baffle plate, and another torque arm and the cross bar of torsion spring offset.The setting of cross bar causes convenient and turned round
Spring coordinates, and it can in addition contain increase the intensity of bracket, makes it more firm.
In order to realize locking of the chair back in a certain position, preferably, the chassis is additionally provided with chair back wane lock mechanism,
Described chair back wane lock mechanism includes lockplate, latch and plug housing, and lockplate is provided with row's lockhole, and lockplate is with sticking up
Plate synchronous axial system, plug housing is in by lockplate and plug housing is fixedly linked with base, latch slip be interspersed on plug housing and
Coordinate with lockhole, latch is connected with the elastic yarn that elastic force is produced when form produces change, and the elastic force of elastic yarn makes latch automatic
Corresponding to insertion in lockhole, elastic yarn is connected with the drive device being driven to elastic yarn.By above-mentioned locking mechanism, can incite somebody to action
The chair back is fixed on the position that some user feels comfortably cool.
Preferably, described drive device includes being horizontally inserted adjusting rod in base, axial restraint set on adjusting rod
Provided with sleeve piece, one end of elastic yarn is stuck in external member, the other end connecting bolt of elastic yarn.Adjusting rod is the bar lifting of control gas
Adjusting rod, the locking of latch, unlocking motion are realized using same root adjusting rod, structure is simplified and ingenious, easy to use；When
Adjusting rod stress along latch direction of insertion move when, elastic yarn is changed into heeling condition and thus produce elastic force, latch is in elastic force
The situation of lockhole is remained inserted under effect, when lockplate turns to lockhole with seesaw to be aligned with latch, work of the latch in elastic force
The lockhole corresponding to lower insertion；Avoid when latch is directly synchronized with the movement with adjusting rod because elasticity reset device power is larger so that
The more difficult insertion lockhole of latch.
Preferably, external member is provided with the waist hole set along external member circumferential direction, it is provided with waist hole and is connected with adjusting rod
Screw.External member axial direction is fixed on adjusting rod by screw, while waist hole is played when adjusting rod rotates regulation gas bar and kept away
Allow the effect of screw.
Preferably, described elastic yarn is provided with extension, the free end of extension is bent to form crotch, on plug housing
A word hole is provided with along latch moving direction, and described crotch is plugged in a word hole and the stroke of crotch is by a word hole both ends
Limitation.It is possible thereby to limit the stroke of latch, prevent latch from departing from plug housing.
Preferably, described seesaw include two side plates of two spaced and parallel side plates and connection and to connect
The connecting plate of the chair back, cross bar being connected between two side plates, the both ends of lockplate are respectively sleeved on cross bar and the first bearing pin,
Lockhole is positioned close to the opening position of cross bar.
Latch is set smoothly to insert in lockhole for convenience, preferably, the aperture of lockhole is more than the diameter of latch.
Preferably, described lockplate is in the opening position in the middle part of the first bearing pin or close to middle part.Thus, seesaw is locked
Determine forced position to be transferred in the middle part of chassis, it is only i.e. controllable with unification lockplate by a latch, not only facilitate grafting position
Alignment accuracy is put, also causes overall stress evenly.
Preferably, be cased with plastic bushing on cross bar, plastic bushing with lockplate intersection location at be truncated so as to
A breach is formed, described lockplate is stuck in breach just.The presence of plastic bushing can not only avoid torsion spring and cross bar
Directly contact sends sound, and also acts the effect for blocking lockplate, kills two birds with one stone.
Preferably, described lockplate is welded and fixed with cross bar.It is possible thereby to lockplate is avoided along cross bar axis direction
Produce movement.
A kind of office chair, including the chair back, seat support and chair bottom as described above, the chair back are connected with seesaw, seat support
It is connected with bracket.
Preferably, also including gas bar, described gas bar is connected with the base of chair bottom.
Employing design starting point of the invention, theory and the beneficial effect of above-mentioned technical proposal is：
The invention provides a kind of without adjusting manually, more humane, the adaptive office chair bottom of the more preferable gravity of versatility
Disk, equip the office chair or swivel chair on this chassis, according to human body weight, backrest reclining restoring force has corresponding matching so that no matter body
The people of heavy and light or weight easily can stand up in reclining reply.
Specifically, seesaw of the invention directly acts on bracket, and the chair back is connected and fixed on seesaw as seesaw and bracket
Driving force, human body, which puts on the gravity of seat support and formed by being articulated with the second bearing pin of bracket, is applied to the restoring force of bracket,
The driving force and restoring force of bracket form Antagonistic Relationship；Specifically, the second bearing pin for being connected to bracket is provided with seesaw front end,
Second bearing pin is plugged in the gain that seesaw front end opens up, and the second bearing pin is driven by gain so as to lift support when seesaw rotates
Frame, the second bearing pin produce sliding in gain；So the quadric chain before relatively, this invention simplifies chassis structure, portion
Part is few, easy for installation, installation effectiveness is high and cost is low.
Meanwhile the first bearing pin both rotating fulcrums as seesaw, and the installation as elasticity reset device torsion spring is held simultaneously
Support portion, make space layout more compact, save space；Cross bar not only coordinates to be driven torsion spring with torsion spring makes its deformation, together
When cross bar coordinate again with the first bearing pin installing fixing lock fixed board, each part has been played multiple purposes, maximize section
About space, reduces parts, simplifies mounting structure.
During human body backward reclining, the gravity for loading on seat support is transmitted to the ratio of chair back restoring force and incrementally increased,
Rational backrest restoring force is provided all the time in whole process so that the lighter or heavier people of body weight can easily reclining and return
Stand up again.
Furthermore people, during leaning on backward, seat support also follows the rotation of the chair back to be moved rearwards, backrest lumbar support is set to begin
Eventually fitting human body back correspondence position, avoid backrest lumbar support depart from human body waist produce waist it is hanging, it also avoid
Clothing produces friction with backrest.
Brief description of the drawings
Fig. 1 is the inside dimensional structure diagram on chassis of the present invention in embodiment；
Fig. 2 is Fig. 1 planar structure schematic diagram；
Fig. 3 is the inside dimensional structure diagram of another angle in chassis of the present invention in embodiment；
Fig. 4 is the fractionation structural representation on chassis of the present invention；
Fig. 5 is the fractionation structural representation of another angle in chassis in embodiment；
Fig. 6 is the another form of internal dimensional structure diagram in chassis of the present invention in embodiment；
Fig. 7 is the dimensional structure diagram of seesaw in embodiment；
Fig. 8 is the view of seesaw and base engagement in embodiment；
Fig. 9 is explosive view of the invention in embodiment；
Figure 10 is the explosive view of another angle of the present invention in embodiment；
Figure 11 is the planar structure schematic diagram that chassis is under original state；
Figure 12 is the dimensional structure diagram that chassis is under original state；
Planar structure schematic diagrams of the Figure 13 for chassis under in running order；
Dimensional structure diagrams of the Figure 14 for chassis under in running order；
Figure 15 is schematic diagram of the chassis on gas bar；
Figure 16 is the structural representation that elastic yarn is engaged with lockplate；
Figure 17 is the structural representation for another angle that elastic yarn is engaged with lockplate；
Figure 18 is the fit structure schematic diagram of elastic yarn extension and plug housing；
Figure 19 is the schematic diagram that the latch of chair back wane lock mechanism is in the lock state；
Figure 20 is that the latch of chair back wane lock mechanism is in the schematic diagram of unlocked state.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be different from other modes described here using other to implement, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
The embodiment of the present invention is as follows：
Embodiment：The reference azimuth of each part of the definition present invention first, the present invention is by chassis and office chair in normal mounting
In use, the position where the front of office chair is front end, and the rear of office chair includes backrest is rear end, the front end on chassis is
Region away from seesaw, the rear end on chassis is close to the region of seesaw.
A kind of chair bottom, a kind of Revolving chair chassis is may also be referred to as, as shown in Fig. 1~Figure 10, including to connect gas
The base 1 of bar, the bracket 2 to fixed seat support and to connect the seesaw 3 of the chair back, bracket 2 is arranged in base 1, and seesaw 3 is set
Put in bracket 2；Specifically, described base 1 is included to connect the bottom plate 4 of gas bar, in the left and right sides of bottom plate 4 along perpendicular
Nogata is fixedly linked to a supporting plate 5, supporting plate 5 is respectively provided with bottom plate 4, and bottom plate 4 serves to whole chassis and seat support, the chair back
Supporting role.
As shown in Figure 4,5, the first axis hole 9 is arranged with the rear end of the supporting plate 5 of the both sides of base 1, the middle part of seesaw 3 is installed with
First bearing pin 11 and seesaw 3 are rotating fulcrum with the first bearing pin 11, and the first bearing pin 11 is connected through bracket 2 and with base 1；Specifically
Say, the rail groove 32 coordinated with the first bearing pin 11 is symmetrically offered in the both sides of bracket 2, the first bearing pin 11 is located in rail groove
In 32, the first bearing pin 11 is a whole root long axle, and the both ends of the first bearing pin 11 are planted after each sequentially passing through seesaw 3, rail groove 32
In the first axis hole 9.In order that overall keep attractive in appearance, the front end of base 1 is provided with shield 33.
The front end both sides of seesaw 3 symmetrically offer gain 6, and the second bearing pin 8 is equipped with gain 6 and the second bearing pin 8 is with holding in the palm
Frame 2 is connected；Specifically, the second axis hole 10 is arranged with the front end both sides of bracket 2, the second described bearing pin 8 is a whole root long
Axle, the both ends of the second bearing pin 8 are inserted in the second axis hole 10 after each passing through gain 6.
Described bracket 2 is included to connect the supporting plate 7 of seat support, and the both sides of supporting plate 7 have extended downwardly and first, second bearing pin
11st, 8 auxiliary section 12 coordinated.
For the movement locus of specification bracket, movement of bracket path generation is determined, will not run chaotically or shake；Seesaw
3 anterior both sides are arranged with controls connecting rod 30, and one end of controls connecting rod 30 is rotatablely connected with the second bearing pin 8, controls connecting rod 30
The other end be rotatablely connected by the 3rd bearing pin 31 with base 1.
Described rail groove 32 is towards being obliquely installed close to the direction of seesaw 3 from lower to upper, from lower to upper described waist
Groove 6 is towards the direction away from seesaw 3 and is obliquely installed.
The chassis is also included when seesaw 3 prizes the elasticity reset device for enabling bracket to set back after bracket 2 moves；
In the present embodiment, described elasticity reset device is torsion spring 12, and torsion spring 12 is set on the first bearing pin 11, a torsion of torsion spring 12
Arm 121 offsets with base 1, another torque arm 122 and the synchronous axial system of seesaw 3 of torsion spring 12；Specifically, as shown in Fig. 5,7,8,
Described seesaw 3 include two side plates 13 of two spaced and parallel side plates 13 and connection and to connect the connecting plate of the chair back
14, connecting plate 14 is located at outside base 1, and gain 6 is opened on side plate 13, baffle plate 15 is provided with the bottom surface of base 1, two sides
Cross bar 15 is connected between plate 13, a torque arm 121 and the baffle plate 15 of torsion spring 12 offset, another torque arm 122 of torsion spring 12 with
Cross bar 15 offsets.
When the chair back or the reclining of seesaw 3 are to maximum angle, distance that bracket 2 or seat support move backward with the chair back for 15~
40mm, most preferably 30mm；The chair back backward reclining angle be 10~30 degree, most preferably 21 degree.
When being installed and used on swivel chair, under original state, people is sitting on swivel chair the present invention, as shown in Figure 11,12, in torsion spring
In the presence of torsion, seat support, human bady gravitational, supporting plate 7 is pressed in two supporting plates (not shown) of base 1；When people leans on chair backward
During the back of the body, as shown in Figure 13,14, bracket 2 can drive seat support to interlock, and make seat support also follow the rotation of the chair back to be moved rearwards.
Further say, as shown in Figure 15~20, in order to which seat back lock is also set up on a suitable position, the chassis
There is chair back wane lock mechanism, described chair back wane lock mechanism includes lockplate 16, latch 17 and plug housing 18, lockplate
16 are provided with row's lockhole 19, and lockhole 19 is multiple, and the present embodiment is preferably 3, and lockplate 16 is inserted with the synchronous axial system of seesaw 3
Key seat 18 is in the side of lockplate 16 and plug housing 18 is fixedly linked with base 1, the slip of latch 17 be interspersed on plug housing 18 and with
Lockhole 19 coordinates, and latch 17 is connected with the elastic yarn 20 that elastic force is produced when form produces change, and the elastic force of elastic yarn 20 makes to insert
Pin 17 is automatically inserted into corresponding lockhole 19, and elastic yarn 20 is connected with the drive device being driven to elastic yarn 20；Elastic yarn
20 be steel wire, and its original state is vertical state, when its driven device drags, because the upper and lower ends of elastic yarn 20 are fixed,
Therefore its run-off the straight deformation, thus produces elastic force.
As shown in Figure 16,17,18, described drive device includes the adjusting rod 21 being horizontally inserted in base 1, adjusting rod 21
And gas bar is adjusted simultaneously, axial restraint is arranged with the external member 22 of a plastic material on adjusting rod 21, and external member 22 is provided with neck 34,
One end of elastic yarn 20 is stuck in the neck 34 of external member 22, the other end connecting bolt 17 of elastic yarn 20；External member 22 is provided with edge
The waist hole 23 that the circumferential direction of external member 22 is set, the screw 24 being connected with adjusting rod 21 is provided with waist hole 23, because waist hole 23 is to spiral shell
Silk 24 serves avoidance effect, so that adjusting rod 21 can freely rotate the bar lifting of regulation gas.
Further to say, described elastic yarn 20 is provided with extension 25, and the free end of extension 25 is bent to form crotch 26,
A word hole 27 is provided with along latch moving direction on plug housing 18, it is interior and crotch 26 that described crotch 26 is plugged on a word hole 27
Stroke is limited by the both ends of a word hole 27, so that crotch 26 is without departing from plug housing 18.
Lockplate 16 is by the following manner installation settings：The both ends of lockplate 16 are respectively sleeved at the pin of cross bar 15 and first
On axle 11, plane and the axis perpendicular of the first bearing pin 11, lockhole 19 where lockplate 16 are positioned close to the position of cross bar 15
Put place；Described lockplate 16 is in the middle part of the first bearing pin 11 or the opening position close to middle part；Insert, lock for the ease of latch 17
The aperture in hole 19 is more than the diameter of latch 17.
As shown in figure 19, to avoid metal contact from sending sound, plastic bushing 28, plastic bushing 28 are cased with cross bar 15
With the intersection location of lockplate 16 at be truncated so as to form a breach 29, described lockplate 16 is stuck in breach 29 just
It is interior.
When in unlocked state, as shown in figure 20, latch 17 departs from lockhole 19, and now, people sits on the seat, can be with
The chair back is leaned on any angle；When in the initial position not leaned on and when being allowed to be in the lock state, stirring adjusting rod 21, make
Elastic yarn 20 is changed into heeling condition from vertical state, elastic force, that is, cushion effect is produced, when lockplate 16 turns to corresponding lockhole
When being aligned with latch, latch is automatically inserted into the locking that lockplate is realized in corresponding lockhole in the presence of cushion effect, makes seesaw
It is not rotated further by.
In the description of the invention, term " multiple " then refers to two or more, is limited unless otherwise clear and definite.Term
" first ", " second ", " the 3rd " etc. are only used for the purpose of description, and it is not intended that instruction or hint relative importance.
The term such as term " installation ", " connected ", " connection ", " fixation " all should be interpreted broadly, for example, " connection " can be
It is fixedly connected or is detachably connected, or is integrally connected；" connected " can be joined directly together, and can also pass through centre
Medium is indirectly connected.For the ordinary skill in the art, can as the case may be or the present invention specific solution
Release to understand the concrete meaning of above-mentioned term in the present invention.
In description of the invention, it is to be understood that the orientation or position relationship of the instruction such as term " on ", " under " be based on
Orientation shown in the drawings or position relationship, it is for only for ease of description description of the invention and simplified, rather than instruction or hint institute
The device or unit of finger must have specific direction, with specific azimuth configuration and operation, it is thus impossible to be interpreted as to this hair
Bright limitation.
In the description of this specification, the description of term " specific embodiment " etc. means that combining the embodiment or example describes
Specific features, structure, material or feature be contained in the present invention at least one embodiment or example in.In this manual,
Identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, the specific features of description, knot
Structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (23)
1. a kind of chair bottom, it is characterized in that：Bracket including base, to fixed seat support and to connect sticking up for the chair back
Plate, bracket are arranged in base, and seesaw is arranged in bracket, be installed with the first bearing pin in the middle part of seesaw and seesaw using the first bearing pin for turn
Activity supporting point, the first bearing pin are connected through bracket and with base, and seesaw front end both sides symmetrically offer gain, are equipped with gain
Second bearing pin and the second bearing pin is connected with bracket, the rail groove coordinated with the first bearing pin is symmetrically offered in the both sides of bracket, the
One bearing pin is located in rail groove, and the chassis also includes enabling the elasticity that bracket sets back after seesaw prizes movement of bracket
Resetting means.
A kind of 2. chair bottom according to claim 1, it is characterised in that：The anterior both sides of seesaw are arranged with control
Connecting rod, one end of controls connecting rod are rotatablely connected with the second bearing pin, and the other end of controls connecting rod passes through the 3rd bearing pin and base rotation
Connection.
A kind of 3. chair bottom according to claim 1, it is characterised in that：The first described bearing pin is a whole root long
Axle, the both ends of the first bearing pin are connected after each sequentially passing through seesaw, rail groove with base.
A kind of 4. chair bottom according to claim 1, it is characterised in that：The first described bearing pin is two independent
Short axle, is correspondingly fixed with two supports on base, one end of each short axle sequentially pass through after seesaw, rail groove with base phase
Even, the other end of each short axle is inserted in corresponding support.
A kind of 5. chair bottom according to claim 1, it is characterised in that：The second described bearing pin is a whole root long
Axle, the both ends of the second bearing pin are connected after each passing through gain with bracket.
A kind of 6. chair bottom according to claim 1, it is characterised in that：First bearing pin is connected with base to be referred to：
The both sides of base rear end are arranged with the first axis hole, and the first bearing pin is plugged in the first axis hole.
A kind of 7. chair bottom according to claim 1, it is characterised in that：Second bearing pin is connected with bracket to be referred to：
The both sides of bracket front end are arranged with the second axis hole, and the second bearing pin is plugged in the second axis hole.
A kind of 8. chair bottom according to claim 1, it is characterised in that：Described base is included to connect gas bar
Bottom plate, be vertically respectively provided with a supporting plate in the left and right sides of bottom plate, supporting plate is fixedly linked with bottom plate, the first bearing pin
It is to be connected with the supporting plate of base；Described bracket is included to connect the supporting plate of seat support, and supporting plate both sides have extended downwardly and the
First, the auxiliary section that the second bearing pin coordinates.
A kind of 9. chair bottom according to claim 1, it is characterised in that：Described rail groove is towards from lower to upper
It is obliquely installed close to the direction of seesaw, described gain is towards the direction away from seesaw and is obliquely installed from lower to upper.
A kind of 10. chair bottom according to claim 1, it is characterised in that：Bracket connects elasticity reset device, described
Elasticity reset device be spring, one end of spring is connected with bracket, and the other end of spring is connected with base.
A kind of 11. chair bottom according to claim 1, it is characterised in that：Described elasticity reset device is torsion spring,
Torsion spring is set on the first bearing pin, and a torque arm of torsion spring offsets with base, another torque arm and the seesaw synchronous axial system of torsion spring.
A kind of 12. chair bottom according to claim 11, it is characterised in that：It is flat that described seesaw includes two intervals
Two side plates of capable side plate and connection and to connect the connecting plate of the chair back, connecting plate is located at outside base, at the bottom of base
Face is provided with baffle plate, and cross bar is connected between two side plates, and a torque arm of torsion spring offsets with baffle plate, another torsion of torsion spring
Arm offsets with cross bar.
A kind of 13. chair bottom according to claim 1, it is characterised in that：The chassis is additionally provided with chair back seesaw lock
Determine mechanism, described chair back wane lock mechanism includes lockplate, latch and plug housing, and lockplate is provided with row's lockhole, lock
Fixed board is with seesaw synchronous axial system, and plug housing is in by lockplate and plug housing is fixedly linked with base, and latch slip is interspersed in slotting
Coordinate on key seat and with lockhole, latch is connected with the elastic yarn that elastic force is produced when form produces change, and the elastic force of elastic yarn makes
Latch is automatically inserted into corresponding lockhole, and elastic yarn is connected with the drive device being driven to elastic yarn.
A kind of 14. chair bottom according to claim 13, it is characterised in that：Described drive device includes horizontal insert
Enter the adjusting rod in base, axial restraint is arranged with sleeve piece on adjusting rod, and one end of elastic yarn is stuck in external member, elastic yarn
Other end connecting bolt.
A kind of 15. chair bottom according to claim 14, it is characterised in that：External member is provided with along external member circumferential direction
The waist hole of setting, the screw being connected with adjusting rod is provided with waist hole.
A kind of 16. chair bottom according to claim 13, it is characterised in that：Described elastic yarn is provided with extension,
The free end of extension is bent to form crotch, and a word hole is provided with along latch moving direction on plug housing, and described crotch is planted
In a word hole and the stroke of crotch is limited by a word hole both ends.
A kind of 17. chair bottom according to claim 13, it is characterised in that：It is flat that described seesaw includes two intervals
Two side plates of capable side plate and connection and to connect the connecting plate of the chair back, cross bar is connected between two side plates, is locked
The both ends of fixed board are respectively sleeved on cross bar and the first bearing pin, and lockhole is positioned close to the opening position of cross bar.
A kind of 18. chair bottom according to claim 13, it is characterised in that：The aperture of lockhole is more than the straight of latch
Footpath.
A kind of 19. chair bottom according to claim 17, it is characterised in that：Described lockplate is in the first bearing pin
Middle part or the opening position close to middle part.
A kind of 20. chair bottom according to claim 17, it is characterised in that：Plastic bushing is cased with cross bar, is moulded
Material sleeve pipe with lockplate intersection location at be truncated so as to form a breach, described lockplate is stuck in breach just.
A kind of 21. chair bottom according to claim 17, it is characterised in that：Described lockplate and cross bar welding are solid
It is fixed.
22. a kind of office chair, it is characterized in that：Including the chair back, seat support and the office chair as described in any one of claim 1~21
Chassis, the chair back are connected with seesaw, and seat support is connected with bracket.
23. a kind of office chair according to claim 22, it is characterized in that：Also include gas bar, described gas bar and office chair
The base on chassis is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610596293.3A CN107625324B (en) | 2016-07-18 | Office chair chassis and office chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610596293.3A CN107625324B (en) | 2016-07-18 | Office chair chassis and office chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107625324A true CN107625324A (en) | 2018-01-26 |
| CN107625324B CN107625324B (en) | 2024-04-12 |
Family
ID=
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108371436A (en) * | 2018-04-25 | 2018-08-07 | 严澄宇 | The free inclining mechanism and free regulating swivel chair of elastic force seesaw type |
| CN108402745A (en) * | 2018-05-16 | 2018-08-17 | 周辉 | A kind of multifunction seat chassis with zero back-rubbing function |
| KR102051315B1 (en) * | 2019-05-15 | 2019-12-03 | 주식회사 대하정공 | Chair assembly |
| CN112841967A (en) * | 2020-12-31 | 2021-05-28 | 恒林家居股份有限公司 | Self-loading tray and chair |
| CN113507864A (en) * | 2019-01-18 | 2021-10-15 | 富洛克公司 | Tilt locking device |
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| CN2449570Y (en) * | 2000-10-31 | 2001-09-26 | 隆裕企业有限公司 | Office chair having inclination adjustable back-rest and seat |
| CN201542121U (en) * | 2009-10-30 | 2010-08-11 | 杭州中泰实业有限公司 | Tray used for double-locking chair |
| CN103479112A (en) * | 2013-09-24 | 2014-01-01 | 浙江永艺家具股份有限公司 | Swivel chair base plate |
| CN204181249U (en) * | 2014-09-18 | 2015-03-04 | 浙江永艺家具股份有限公司 | For the elasticity reset device of Revolving chair chassis |
| CN204561517U (en) * | 2015-04-28 | 2015-08-19 | 杭州杨氏实业有限公司 | With the chassis of certainly bearing a heavy burden of elastic force preset mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2449570Y (en) * | 2000-10-31 | 2001-09-26 | 隆裕企业有限公司 | Office chair having inclination adjustable back-rest and seat |
| CN201542121U (en) * | 2009-10-30 | 2010-08-11 | 杭州中泰实业有限公司 | Tray used for double-locking chair |
| CN103479112A (en) * | 2013-09-24 | 2014-01-01 | 浙江永艺家具股份有限公司 | Swivel chair base plate |
| CN204181249U (en) * | 2014-09-18 | 2015-03-04 | 浙江永艺家具股份有限公司 | For the elasticity reset device of Revolving chair chassis |
| CN204561517U (en) * | 2015-04-28 | 2015-08-19 | 杭州杨氏实业有限公司 | With the chassis of certainly bearing a heavy burden of elastic force preset mechanism |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108371436A (en) * | 2018-04-25 | 2018-08-07 | 严澄宇 | The free inclining mechanism and free regulating swivel chair of elastic force seesaw type |
| TWI681739B (en) * | 2018-04-25 | 2020-01-11 | 嚴澄宇 | Elastic seesaw-type tilting mechanism and swivel chair having the same |
| CN108371436B (en) * | 2018-04-25 | 2023-10-27 | 严澄宇 | Elastic seesaw type free tilting mechanism and free adjusting swivel chair |
| CN108402745A (en) * | 2018-05-16 | 2018-08-17 | 周辉 | A kind of multifunction seat chassis with zero back-rubbing function |
| CN113507864A (en) * | 2019-01-18 | 2021-10-15 | 富洛克公司 | Tilt locking device |
| US11812853B2 (en) | 2019-01-18 | 2023-11-14 | Flokk Ab | Tilt locking device |
| CN113507864B (en) * | 2019-01-18 | 2024-02-02 | 富洛克公司 | Tilt lock device |
| KR102051315B1 (en) * | 2019-05-15 | 2019-12-03 | 주식회사 대하정공 | Chair assembly |
| CN112841967A (en) * | 2020-12-31 | 2021-05-28 | 恒林家居股份有限公司 | Self-loading tray and chair |
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