CN109419197A - Locking mechanism for office chair back seat synchronizing linkage - Google Patents
Locking mechanism for office chair back seat synchronizing linkage Download PDFInfo
- Publication number
- CN109419197A CN109419197A CN201710764440.8A CN201710764440A CN109419197A CN 109419197 A CN109419197 A CN 109419197A CN 201710764440 A CN201710764440 A CN 201710764440A CN 109419197 A CN109419197 A CN 109419197A
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- Prior art keywords
- hole
- locking pin
- crank
- pedestal
- locking
- Prior art date
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- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 37
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 69
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 15
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
- A47C1/0325—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of clamps or friction locking members
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Chairs Characterized By Structure (AREA)
Abstract
The invention discloses a kind of locking mechanism for office chair back seat synchronizing linkage, including pedestal and two cranks, pedestal includes bottom plate and the side plate along the extension of bottom plate two sides, and is respectively disposed on the outside of both side plate；Locking mechanism includes locking pin and control-rod, the second through-hole is offered on side plate wherein, locking pin is threaded through in the second through-hole, locking pin has radially extended lock tongue at the position of the second through-hole, second through-hole is communicated with the location hole with lock tongue cooperation, and the card slot cooperated with lock tongue is equipped on the crank close to the second through-hole；Under original state, by the mobile locking pin of control-rod, lock tongue, which is inserted into simultaneously in the card slot of location hole and another crank, realizes locking；Under seat raised configuration, by the mobile locking pin of control-rod, so that positioning hole is inserted into lock tongue end, at this point, the lower edge close to the crank of the second through-hole rides on the lock tongue of locking pin, the locking under raised configuration is realized.The configuration of the present invention is simple, it is at low cost, it is easy to operate.
Description
Technical field
The present invention relates to swivel chairs, office chair technical field, in particular to a kind of to be used for office chair back seat synchronizing linkage
Locking mechanism.
Background technique
Existing for synchronizing the linkage of seat and the chair back in the prior art, the chair back drives seat movement when swinging back,
Such as belong to NIKOV LJUBOMIR German patent DE 3735256 describe a kind of synchronous chair the chair back and seat inclination
Synchronizing device.Wherein four bar bindiny mechanisms include two cranks, one preceding, another is rear.The crank is articulated with chair
Between seat frame and chair pedestal, wherein the chair base frame and the rear crank of four bar bindiny mechanism are integrally formed.
The preceding crank and the rear crank tilt in different directions relative to same vertical line, i.e., if bent before described
Handle is relative to vertical line in the counterclockwise direction with inclined at acute angles, then the rear crank is relative to vertical line along clockwise direction with sharp
Overturning angle；Vice versa.
When the variation of the gradient of the chair back, the front of the seat rises, and the rear portion of the seat simultaneously declines,
Or vice versa；This mode simultaneously is less easy to be received by all users.
In addition, the above-mentioned apparatus of NIKOV LJUBOMIR do not solve weight due to acting on the seat and not counting
The problem of tilting the chair back is difficult to caused by too long of lever arm.
For another example apply for that the French Patent (FRP) FR2045120 of artificial DUPART discloses following such a synchronizing device,
For by a four bar bindiny mechanisms with a lever come the inclination of synchronous chair base frame and seat back frame.The four bars connection
Mechanism only includes two cranks, and the crank is articulated between pedestal and the chair base frame.The lever has two arms, and
With the fulcrum being located on the pedestal.Wherein one arm is integrally formed with the seat back frame.On the contrary, it is described another
Arm acts on the rear portion of the chair base frame, and the rear portion is lifted or pulled down according to the angle of the chair back and inclined direction.
Although this method structure is simple, how comfortable there is no for user.This is because: due to upper
The dimension for the lever with two arms stated needs to reduce, and for the weight of user of the antagonism on seat itself, makes
User needs to apply sizable power on the chair back, this causes user uncomfortable, and Experience Degree is not natural enough.
In addition, the geometry of above-mentioned DUPART patent, the patent cannot provide: when the tilt angle for changing the chair back
When, the front and rear of the seat rises or falls simultaneously, and the degree of the front of the seat risen or fallen is big
The degree risen or fallen in the rear portion of the seat.
It is ad hoc to count a kind of back seat synchronizing linkage for office chair, bracket, use including pedestal, to connect seat
To connect the wraping plate and at least one crank of the chair back, the both ends of crank are hinged with bracket front part, pedestal respectively, the wraping plate
It is linked together with crank；The sliding slot guiding mechanism that lifting guidance is carried out to rear bracket part is equipped between rear bracket part and pedestal；
Wraping plate is rotated to when having larger or smaller tilt angle relative to vertical line so that the front of bracket and rear portion rise simultaneously or
Decline.
But some people wish seat back lock identifying oneself comfortable position at one, to carry out lunch break or stop for a long time
Breath, so needing to design, a kind of structure is simple, locking mechanism at low cost, being not take up space solves the problems, such as this；Applicant's
First patent " chair back wane lock mechanism that CN201410479184.4- is used for Revolving chair chassis ", " CN201310438112.0-
A kind of chair back wane lock mechanism " structure is all relative complex, excessively occupies chassis interior space, installation is also not convenient, unfavorable
In understructure simplify and loss of weight.
Summary of the invention
The present invention overcomes the deficiency in the presence of the above-mentioned prior art, provide that a kind of structure is simple, does not occupy excessively
Chassis interior locking space mechanism；The lock mechanism operative is convenient, it is only necessary to mobile control-rod, while also having component few
It is at low cost, it is easy for installation the advantages that.
It further says, the composition of the locking mechanism, space in pedestal is not occupied excessively, so that not only reducing pedestal
Body height and weight, simplify understructure, additionally it is possible to meet crank gradient, can achieve seat and preset lift height
Degree, while also meeting the bonding strength of support rod.
The technical scheme of the present invention is realized as follows:
It is described including pedestal and the crank hinged with pedestal for the locking mechanism of office chair back seat synchronizing linkage
Pedestal include bottom plate and the side plate that is upwardly extended along bottom plate two sides, the crank is two, and is respectively disposed at both side plate
Outside；The locking mechanism further includes locking pin and connection locking pin and the control-rod that is operated to locking pin, wherein
The second through-hole is offered on side plate, the locking pin is threaded through in the second through-hole, and locking pin is close to the position of the second through-hole
Place has radially extended lock tongue, and second through-hole is communicated with the location hole with lock tongue cooperation, in the song close to the second through-hole
Handle is equipped with the card slot cooperated with lock tongue；Under original state, by the mobile locking pin of control-rod, lock tongue be inserted into simultaneously location hole and
Locking is realized in the card slot of another crank；It is same by the mobile locking pin of control-rod under seat raised configuration, so that lock tongue end
It is inserted into positioning hole, at this point, the lower edge close to the crank of the second through-hole rides on the lock tongue of locking pin, is realized under raised configuration
Locking.
Lock tongue insertion positioning hole limits locking pin circumferentially not to be able to rotate, so that the crank closed on is limited
Rotation.
Preferably, being equipped with first through hole on another side plate, locking pin is threaded through in first through hole simultaneously, close the
The crank of one through-hole is equipped with lockhole；Under original state, by the mobile locking pin of control-rod, make locking pin one end insertion crank
In lockhole；It is same by the mobile locking pin of control-rod under seat raised configuration, so that locking pin one end is exposed to first through hole
Outside, the lower edge close to the crank of first through hole rides on the bared end of locking pin, realizes the locking under raised configuration.Using upper
Lock mode is stated, not only realizes the bilateral locking in pedestal two sides, safety is more preferably, and easy to operate, it is only necessary to mobile control
The advantages that bar, while also having component few at low cost, structure is simple, easy for installation.
Preferably, the lock tongue includes a fixed lantern ring being set on locking pin, along locking pin diameter on lantern ring
Extend fixture block, card slot and the location hole cooperation of the fixture block and crank to direction.Lantern ring can be fixed on lock by positioning pin
In rationed marketing.
Preferably, further include the bracket to connect seat, the bracket side of being set on the base is fixed on the bottom surface of pedestal
The lug extended downwardly equipped with one, crank are to be obliquely installed, and the both ends of crank are hinged with bracket, lug respectively.By the bottom of at
Seat lower section is arranged as the lug of hinge joint, and base body, that is, side plate height can reduce, and crank is arranged in pedestal
On the outside of side plate, locking mechanism is again very ingenious simple, space in pedestal is not occupied, so not only reducing the master of pedestal in this way
Body height and weight, simplify understructure, additionally it is possible to meet crank gradient, can achieve seat and preset lift height
Degree.
Preferably, the whole height of side plate is 3-5cm.The present invention is individually attached with pedestal by the lower end hinge joint of crank
Lug it is hinged, so as to reduce the body height of pedestal, overall weight is reduced, so that device more lightweight, miniaturization.
Preferably, being fixed with connecting plate below base end face, the lug is rolled over downwards by connection board ends
It is curved to form.Such mode is easy to process, connects also more convenient.
Preferably, the connecting plate is bonded with base end face and is welded and fixed or is fixed by fastener.Fastener
Screw or pin etc. can be used.
Preferably, the lug is integrally formed with bottom plate or side plate.Can make in this way it is more aesthetically pleasing, processing more
It is convenient.
Preferably, the lug is formed by a part of downward bending being cut on side plate.Lug has drawn from side
Plate, compare connecting plate scheme, more can reduce pedestal weight.
Preferably, being additionally provided with the casing for grafting support rod on pedestal, the casing is threaded through base end face
It is fixed in upper preset hole and with tube chamber welds with base, is externally provided with reinforcing member in casing.
Preferably, the reinforcing member is tapered collar, the tapered collar is set in outside casing and tapered collar
The one end being relatively large in diameter contacts and is welded and fixed with base end face.Tapered collar can increase the contact area with pedestal, so that
Casing obtains strong support in radial direction.
Preferably, the length that casing is exposed to pedestal outer bottom is greater than the length that casing is exposed to pedestal inner bottom surface, cone
Shape lantern ring is arranged on the outer bottom of pedestal.Casing can not excessively occupy space in pedestal in this way, advantageously reduce pedestal master
Body, that is, side plate height while base body reduces height, and can satisfy the grafting intensity of support rod.
It is using design starting point of the invention, theory and the beneficial effect of above-mentioned technical proposal:
The present invention is that crank is arranged in chassis outer side, and is moved by locking pin edge perpendicular to side plate direction, so that lock
Tongue insertion is detached from locking and unlock that location hole realizes crank, and very convenient, structure is simple, at low cost, does not have in pedestal
Complicated linkage mechanism is set, base body height can be reduced again in this way, so that overall weight is more frivolous.
It further says, the present invention is on the basis of base body height reduces, in order to meet the initial slopes of crank
It is required that being provided with lower link point of the lug extended downwardly as crank on pedestal, seat is made to can achieve preset lift
Highly.
Detailed description of the invention
Fig. 1 is the schematic illustration of the present invention in the initial state in embodiment；
Schematic illustration of the Fig. 2 for bracket (seat) of the present invention in embodiment in lifting status；
Fig. 3 is the whole three-dimensional viewpoin schematic diagram of the present invention, while being illustrated when not lifting in unlocked state；
Fig. 4 is the overall schematic that the present invention is in the lock state when not lifting under Fig. 3 angle；
Fig. 5 is the partial schematic diagram that the present invention is in unlocked state in the initial state；
Fig. 6 is the partial schematic diagram in unlocked state of present invention angle another in the initial state；
Fig. 7 is the partial schematic diagram that the present invention is in the lock state in the initial state；
Fig. 8 is the partial schematic diagram that present invention angle another in the initial state is in the lock state；
Fig. 9 is the partial schematic diagram that the present invention is in unlocked state under lifting status；
Figure 10 is the partial schematic diagram that present invention angle another under lifting status is in unlocked state；
Figure 11 is the partial schematic diagram that the present invention is in the lock state under lifting status；
Figure 12 is the partial schematic diagram that present invention angle another under lifting status is in the lock state；
Figure 13 is in the schematic diagram of uncompressed state for spring in the initial state of the invention in embodiment；
Figure 14 is in the schematic diagram of compressive state for spring in the initial state of the invention in embodiment；
Figure 15,16 are the stereoscopic schematic diagram under a kind of two kinds of different perspectivess of understructure described in embodiment 2；
Figure 17,18 show for the solid under improved a kind of two kinds of different perspectivess of understructure described in embodiment 2
It is intended to；
Figure 19,20 are the application schematic diagram under two kinds of different perspectivess of improved understructure in embodiment 2；
Figure 21,22 are the stereoscopic schematic diagram under two kinds of different perspectivess of understructure described in embodiment 3.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
In the description of the present invention, term "at least one" refers to one or more, unless otherwise restricted clearly.Art
Language " first ", " second ", " third " etc. are only used for the purpose of description, are not understood to indicate or imply relative importance.
The terms such as term " installation ", " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " can be
It is fixedly connected, may be a detachable connection, or be integrally connected；" connected " can be directly connected, and can also pass through centre
Medium is indirectly connected.It for the ordinary skill in the art, can as the case may be or specific solution of the invention
It releases 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 positional relationship of the instructions such as term " on ", "lower" be based on
Orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion institute
The device or unit of finger must have specific direction, be constructed and operated in a specific orientation, 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 " " embodiment 1 ", " embodiment 2 " etc. means to tie
Close the embodiment or example description particular features, structures, materials, or characteristics be contained at least one embodiment of the present invention or
In example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.And
And the particular features, structures, materials, or characteristics of description can be in any one or more of the embodiments or examples with suitable
Mode combines.
A specific embodiment of the invention is as follows:
Embodiment 1: the reference azimuth of each component of the definition present invention first, the present invention use office chair in normal mounting
When, the front of office chair is front end, front, and it is rear end, rear portion that the rear of office chair, which includes position where the chair back, wraping plate,.
The back seat synchronizing linkage for office chair of the present embodiment, as shown in Fig. 1~Figure 14, including pedestal 1, to
Connect seat bracket 2, wraping plate 3 and at least one crank 4 to connect the chair back, the upper and lower ends of crank 4 respectively with support
2 front of frame, pedestal 1 are hinged, and crank 4 is to be obliquely installed, and the wraping plate 3 is linked together with crank 4, it may also be said to wraping plate 3 and
Crank 4 is integrally formed；The sliding slot guiding mechanism that lifting guidance is carried out to rear bracket part is equipped between 2 rear portion of bracket and pedestal 1
5；The rotation of wraping plate 3 to when having larger or smaller tilt angle relative to vertical line so that the front of bracket 2 and rear portion simultaneously on
It rises or declines.
Specifically, as shown in Figure 3,4, the crank 4 is two, is symmetricly set on 1 two sides of pedestal；The support
Frame 2 includes supporting plate 10 and the wing plate 11 extended downwardly along 10 two sides of supporting plate, and supporting plate 10 is in 4 top of pedestal 1 and crank, wing plate 11
Positioned at 4 two sides of crank；The pedestal 1 includes bottom plate 13 and the side plate 14 that upwardly extends along 13 two sides of bottom plate, and described two
Crank 4 is respectively disposed at 14 outside of both side plate；4 upper end of crank is hinged by the first pin shaft 8 and 2 front of bracket, and described first
Pin shaft 8 is a whole root long axis；4 lower end of crank is hinged by the second pin shaft 9 and pedestal 1；Second pin shaft 9 is wraping plate 3, crank 4
Rotation center.
The sliding slot guiding mechanism includes sliding slot 6 and guide shaft 7, and in the present embodiment, the wing plate of bracket 2 is arranged in sliding slot 6
11 rear portions, the corresponding guide shaft 7 are arranged on pedestal 1, and guide shaft 7 is a whole root long axis and guide shaft 7 is threaded through sliding slot 6
It is interior.Sliding slot 6 is the waist type groove being obliquely installed, and the inclined direction of crank 4 is opposite with the inclined direction of sliding slot 6；The crank 4 is
The front is high and the back is low, and the sliding slot 6 is low early and high after.Hinge joint, the guide shaft 7 of crank 4 and 2 front of bracket be in respectively crank 4 with
The front and rear sides of 1 hinge joint of pedestal.
In use, wraping plate 3 connects the chair back, bracket 2 connects seat, and user is sitting in when swinging back on seat, drives 3 edge of wraping plate
Vertical line is tilted with larger angle, and guide shaft 7 is fixed, and sliding slot 6 is moved along guide shaft 7, as shown in Fig. 2, bracket 2 is risen,
And the height that 2 front of bracket is risen is greater than the height that 2 rear portion of bracket is risen.
It further include having for restoring extremely bracket 2 and wraping plate 3 as shown in Figure 13,14 to assist returning to original state
The elasticity reset device 12 of initial position；The elasticity reset device 12 is spring, and in the present embodiment, the spring is pressure
Spring, one end of spring are constrained in the hinge joint of crank 4 Yu 2 front of bracket, and the other end of spring is constrained on pedestal 1；Specifically
It says, one end of spring is connected to the first pin shaft 8, and the other end of spring is connected to guide shaft 7.When wraping plate 3 rotates backward, make the first pin
Axis 8 moves closer to guide shaft 7, so that so that spring is generated compression generates elastic force.
Further say, as shown in Fig. 3-Figure 12, further include have for will carry on the back seat synchronizing linkage be maintained at it is initial or
The locking mechanism of lifting status；The locking mechanism includes locking pin 15 and connection locking pin 15 and carries out to locking pin 15
The control-rod 16 of operation, locking pin 15 are linked together with control-rod 16, and the locking pin 15 is threaded through the both side plate 14 of pedestal 1
In the first through hole 17 that opens up, the second through-hole 18, locking pin 15 has radially extended lock tongue at the position of the second through-hole 18
19, second through-hole 18 is communicated with the location hole 20 cooperated with lock tongue 19；Closing on the one of bent of first through hole 17
Handle is equipped with lockhole 21, and the card slot 22 cooperated with lock tongue 19, card slot 22 are equipped on another crank for closing on the second through-hole 18
Towards wraping plate 3 side opening in order to lock tongue 19 insertion；Specifically, the lock tongue 19 includes that a fixation is set in locking
Lantern ring 24 on pin 15 extends fixture block 25, the card of the fixture block 25 and crank along locking pin radial direction on lantern ring 24
Slot 22 and location hole cooperation.
When unlocked, wraping plate can be move freely with bracket, when needing wraping plate and carriage lock to original state, be passed through
Control-rod 16 moves locking pin 15, as shown in Fig. 4,7,8, is inserted into 15 one end of locking pin in one crank lockhole 21, and lock tongue 19
It is inserted into the card slot 22 of location hole 20 and another crank simultaneously and realizes locking.
Under raised configuration, equally by the mobile locking pin 15 of control-rod 16, as shown in figure 11, so that 15 one end of locking pin is revealed
Outside for first through hole, as shown in figure 12,19 end of lock tongue is then inserted into location hole 20, at this point, the lower edge of two cranks 4 is taken respectively
On the bared end 23 and lock tongue 19 of locking pin 15, the locking under raised configuration is realized.
Embodiment 2: Figure 15,16 illustrates a kind of understructure of apparatus of the present invention, the pedestal 1 include bottom plate 13 and
The hinge joint 41 of the side plate 14 upwardly extended along 13 two sides of bottom plate, 4 lower end of crank and pedestal 1 is in the lower end of side plate 14, in order to
Meet the gradient of crank, the height of side plate 14 is 8CM or more；And the casing 44 for being used for grafting support rod is arranged in pedestal,
And the cuboid casing 47 by being centered around 44 surrounding of casing in pedestal is reinforced, but this may make 1 main body of pedestal high
It spends greatly, weight is excessive, is unfavorable for developing towards lightweight direction.
Figure 17,18 show a kind of improved understructure, and the pedestal 1 is equally including bottom plate 13 and along 13 two sides of bottom plate
The whole height of the side plate 14 upwardly extended, side plate 14 is 3.5-4.5cm, is fixed with connecting plate below 1 outer bottom of pedestal
42, lug 43 is formed by 42 both ends downward bending of connecting plate, the connecting plate 42 is bonded and is welded and fixed with 1 outer bottom of pedestal
Or it is fixed by fastener；The hinge joint 41 of 4 lower end of crank and pedestal 1 is on lug 43.This reduces side plates 14
The body height of height and pedestal 1, while the gradient that crank can be made to maintain like again.
It further says, the casing 44 for grafting support rod is additionally provided on pedestal 1, and the casing 44 is threaded through
It is welded and fixed on 1 bottom surface of pedestal in preset hole 45 and with pedestal 1, is externally provided with reinforcing member 46, the reinforcing in casing 44
Part 46 is tapered collar, and the length that casing 44 is exposed to 1 outer bottom of pedestal is greater than the length that casing 44 is exposed to pedestal inner bottom surface,
Tapered collar is arranged on the outer bottom of pedestal；And one end that tapered collar is relatively large in diameter contacts with 1 bottom surface of pedestal and welds solid
It is fixed.
Figure 19,20 show the schematic diagram that above-mentioned pedestal is applied on present invention back seat linkage, in Figure 19,20,
4 lower end of crank is hinged by the second pin shaft 9 and lug 43, and crank 4 has been cutd open a part to expose lug 43.
Embodiment 3: as shown in Figure 21,22, in the present embodiment, and not set connecting plate on 1 bottom surface of pedestal, the lug
43 are integrally formed with bottom plate 13 or side plate 14；It further says, the lug 43 is by be cut on side plate 14 one
Downward bending is divided to form；Other technical solutions are same as Example 2.
Claims (12)
1. the locking mechanism of office chair back seat synchronizing linkage is used for, it is characterized in that: including pedestal and the song hinged with pedestal
Handle, the pedestal include bottom plate and the side plate that upwardly extends along bottom plate two sides, and the crank is two, and is respectively disposed at
On the outside of both side plate；The locking mechanism further includes locking pin and connection locking pin and the control-rod that is operated to locking pin,
The second through-hole is offered on side plate wherein, the locking pin is threaded through in the second through-hole, and locking pin is close to the second through-hole
Position at radially extended lock tongue, second through-hole is communicated with the location hole with lock tongue cooperation, logical close to second
The crank in hole is equipped with the card slot cooperated with lock tongue；Under original state, by the mobile locking pin of control-rod, it is fixed that lock tongue is inserted into simultaneously
Locking is realized in the card slot of position hole and another crank；It is same by the mobile locking pin of control-rod under seat raised configuration, so that lock
Positioning hole is inserted into tongue end, at this point, the lower edge close to the crank of the second through-hole rides on the lock tongue of locking pin, realizes and rises shape
Locking under state.
2. locking mechanism according to claim 1, it is characterised in that: be equipped with first through hole, locking pin on another side plate
It is threaded through in first through hole simultaneously, lockhole is equipped on the crank close to first through hole；It is mobile by control-rod under original state
Locking pin is inserted into locking pin one end in the lockhole of crank；It is same that locking pin is moved by control-rod under seat raised configuration,
So that locking pin one end is exposed to outside first through hole, the lower edge close to the crank of first through hole is ridden on the bared end of locking pin,
Realize the locking under raised configuration.
3. locking mechanism according to claim 1, it is characterised in that: the lock tongue includes that a fixation is set in locking pin
On lantern ring, extend fixture block along locking pin radial direction on lantern ring, the card slot and location hole of the fixture block and crank are matched
It closes.
4. locking mechanism according to claim 1, it is characterised in that: further include the bracket to connect seat, bracket is set
It sets above pedestal, a lug extended downwardly is fixed on the bottom surface of pedestal, crank is is obliquely installed, and the both ends of crank
It is hinged with bracket, lug respectively.
5. locking mechanism according to claim 4, it is characterised in that: the whole height of side plate is 3-5cm.
6. locking mechanism according to claim 4, it is characterised in that: be fixed with connecting plate below base end face, institute
The lug stated is formed by connection board ends downward bending.
7. locking mechanism according to claim 6, it is characterised in that: the connecting plate is bonded and welds with base end face
It fixes or is fixed by fastener.
8. locking mechanism according to claim 4, it is characterised in that: the lug be with bottom plate or side plate one at
Type.
9. locking mechanism according to claim 8, it is characterised in that: the lug is by be cut on side plate one
Downward bending is divided to form.
10. locking mechanism according to claim 1, it is characterised in that: be additionally provided on pedestal for grafting support rod
Casing, the casing are threaded through on base end face in preset hole and fix with tube chamber welds with base, are externally provided with reinforcing in casing
Part.
11. locking mechanism according to claim 10, it is characterised in that: the reinforcing member is tapered collar, described
Tapered collar is set in one end that outside casing and tapered collar is relatively large in diameter and contacts and be welded and fixed with base end face.
12. locking mechanism according to claim 11, it is characterised in that: the length that casing is exposed to pedestal outer bottom is greater than
Casing is exposed to the length of pedestal inner bottom surface, and tapered collar is arranged on the outer bottom of pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710764440.8A CN109419197B (en) | 2017-08-30 | 2017-08-30 | Locking mechanism for office chair back seat synchronous linkage device |
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| CN204519950U (en) * | 2015-03-26 | 2015-08-05 | 杭州中泰实业集团有限公司 | Revolving chair tray lifting and bilateral lock adjustment linkage |
| TWM506529U (en) * | 2015-05-20 | 2015-08-11 | An Uji Co Ltd | Swinging and tilting control device of chair |
| CN208540937U (en) * | 2017-08-30 | 2019-02-26 | 永艺家具股份有限公司 | Locking mechanism for office chair back seat synchronizing linkage |
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| JPH0292307A (en) * | 1988-09-29 | 1990-04-03 | Kokuyo Co Ltd | Chair with back rest |
| JPH0529445U (en) * | 1991-10-04 | 1993-04-20 | 株式会社イトーキクレビオ | Operation member mounting structure for chair |
| WO2002038008A1 (en) * | 2000-11-08 | 2002-05-16 | Samhall Ab | Device at a chair mechanism for adjustment of inclination and height of seat using one single operating lever |
| US6419320B1 (en) * | 2001-02-28 | 2002-07-16 | Tung Yu Oa Co. Ltd. | Base manipulation device for office chair |
| KR200243559Y1 (en) * | 2001-04-16 | 2001-10-11 | 동성사무기기(주) | Base for a chair which is adjusted angle of back of a chair |
| CN101137306A (en) * | 2005-03-08 | 2008-03-05 | L&P资产管理公司 | Multi-purpose chair adjustment mechanism |
| KR100679152B1 (en) * | 2006-06-13 | 2007-02-06 | 주식회사 대하정공 | Assembly of chair seat |
| JP2013153869A (en) * | 2012-01-27 | 2013-08-15 | Okamura Corp | Control lever device and chair including the same |
| CN202820407U (en) * | 2012-08-20 | 2013-03-27 | 杨锡其 | Swing rod adjusting mechanism |
| 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 |
| CN204519950U (en) * | 2015-03-26 | 2015-08-05 | 杭州中泰实业集团有限公司 | Revolving chair tray lifting and bilateral lock adjustment linkage |
| TWM506529U (en) * | 2015-05-20 | 2015-08-11 | An Uji Co Ltd | Swinging and tilting control device of chair |
| CN208540937U (en) * | 2017-08-30 | 2019-02-26 | 永艺家具股份有限公司 | Locking mechanism for office chair back seat synchronizing linkage |
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|---|---|
| CN109419197B (en) | 2024-05-24 |
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