CN205831513U

CN205831513U - Seat tool

Info

Publication number: CN205831513U
Application number: CN201620506693.6U
Authority: CN
Inventors: 孙云飞; 陈永春
Original assignee: Anji Shanggong Yongyi Hardware Manufacturing Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2016-05-20
Filing date: 2016-05-20
Publication date: 2016-12-28
Anticipated expiration: 2026-05-20

Abstract

This utility model relates to a kind of seat tool, including backrest, mounting and the arm-rest frame of mounting both sides, the described backrest left and right sides is hinged with two arm-rest frames respectively, both sides, mounting rear end are hinged with the backrest left and right sides respectively, backrest is different with the pin joint position of backrest from the pin joint of arm-rest frame and mounting, mounting front end is slidably connected again while being rotationally connected with arm-rest frame, drive mounting to seesaw when backrest rotates, be provided with flexible restoring organ at backrest with the pin joint position of arm-rest frame or the pin joint position of mounting and backrest；Flexible restoring organ is arranged on the pin joint position of backrest and the pin joint position of arm-rest frame or mounting and backrest, have employed concealed design, restoring force is provided for backrest, mounting motion on the premise of the most additionally taking up room, even if in the unloaded state, invertible back support can also make it reset, make global design more succinct, and save volume.

Description

Seat tool

Technical field

This utility model relates to a kind of seat tool, particularly relates to a kind of leisure chaise longue.

Background technology

The when of the amusement of people's outdoor leisure indoors, leisure chaise longue is through commonly used；The back rest meeting of general leisure chaise longue Tilt backwards, to provide optimal relaxed position.

The most a lot of leisure chaise longues are owing to backrest and the man-machine size matching relationship of seat surface are without fastidious, and user is in reclining process In, backrest particularly Lumbar departs from human body waist, and the two directly forms unsettled gap, causes seat funeral under reclining state Losing support to human body waist, it is simply that " the race waist " that we are commonly called as, human spine can not get effectively supporting and causes many sittings Health problem, rest can not well be loosened；Meanwhile, user is during reclining, and buttocks is relatively fixed with seat surface, and Backrest upwards rubs relative to human body back, causes the discomfort of " clothes is pulled in chopping ", also causes indecency perception.

Therefore, for problem above, leisure chaise longue that a kind of the back of the body be synchronized with the movement need to be designed to solve problem above, but need Increasing flexible restoring organ helps leisure chaise longue to reset, and it is the most roomy that usual leisure chaise longue designs, and carries out resetting very by extension spring Can increase the volume of housing portion in big degree, space is saved not, makes entirety unsightly, therefore, designs a seat back of the body and synchronizes Motion and space-saving leisure chaise longue are the problems being currently needed for solving.

Utility model content

In order to solve above-mentioned technical problem, the purpose of this utility model is to provide the strong of a kind of backrest and medicated cushion linkage Health seat has, and is designed by the linkage of backrest and mounting, when human body is sitting in reclining on chair, and backrest and mounting relative rotation center Close to human body back and the relative rotation center of leg, people is during backrest rises down, and the two forms concentric circular motion；I.e. chair Backrest and seat surface are fitted human body all the time, do not produce relative displacement.The human body waist that the lumbar support of chair is fitted always, effectively keeps away Exempt from the generation of " race waist " situation, beneficially health；Flexible restoring organ is arranged on the pin joint of backrest and arm-rest frame simultaneously Position or mounting and the pin joint position of backrest, have employed concealed design, on the premise of the most additionally taking up room be The motion of backrest, mounting provides restoring force, even if in the unloaded state, invertible back support can also make it reset, and makes global design more Add succinct, and save volume.

In order to realize above-mentioned purpose, this utility model have employed following technical scheme:

A kind of seat tool, including backrest, mounting and the arm-rest frame of mounting both sides, the described backrest left and right sides respectively with two Arm-rest frame is hinged, and both sides, mounting rear end are hinged with the backrest left and right sides respectively, the pin joint of backrest and arm-rest frame and mounting with lean on The pin joint position of the back of the body is different, and mounting front end is slidably connected again while being rotationally connected with arm-rest frame, drives seat when backrest rotates Frame seesaws, and is provided with elastic reset at backrest with the pin joint position of arm-rest frame or the pin joint position of mounting and backrest Mechanism.

As preferably, described flexible restoring organ include wind spring, be arranged on the steady pin of respective points of articulation position with And the projection being connected with backrest, one end of wind spring is connected with steady pin, and the other end of wind spring abuts with projection, band when backrest rotates Dynamic projection promotes wind spring to deform upon and then produces elastic force.Flexible restoring organ uses wind spring, is arranged concentrically on pin joint position Place, for concealed design, designs ingenious, the most additionally takes up room, and backrest promotes wind spring to be deformed when rotating, and produces and replys Power.

As preferably, also include the L-shaped connecting plate being symmetricly set on the backrest left and right sides, described mounting rear end lateral symmetry Being provided with two supports, an arm of L-shaped connecting plate is fixedly linked with backrest, and another arm of L-shaped connecting plate is hinged with support, and L-shaped is even The intersection of fishplate bar two-arm is hinged with arm-rest frame.It is connected by L-shaped connecting plate transfer between backrest with arm-rest frame, mounting, convenient Angle, the arm of force are isoparametric optimizes design, makes backrest with mounting relative rotation center close to human body back rotation relative with leg Turning center, people is during backrest rises down, and the two forms concentric circular motion.

As preferably, steady pin is arranged at another arm of L-shaped connecting plate and the articulated position of support as rotating fulcrum, Projection is arranged on another arm of L-shaped connecting plate, has slot on steady pin, and one end of wind spring is inserted in slot, wind spring The other end forms crotch, and described crotch is hooked on projection.Steady pin refers to that itself does not rotates, so that can keep One end of wind spring keeps fixing, does not rotates；One end of wind spring is directly clamped among in slot, installs more convenient.

As preferably, described mounting is inclined relative to horizontal setting, is respectively provided with one relatively in mounting down either side In the slide bar that horizontal plane is arranged, arm-rest frame connects and has for slide bar being supported and regulating sliding bar frictional force Damper regulation mechanism.Mounting is slidably connected with arm-rest frame by slide bar, makes slip more smoothly；Slide bar is for being obliquely installed and sliding Also it is such time dynamic, backrest can be made to have fallen angle bigger.

Mounting is inclined relative to horizontal setting, and low front end, mounting rear end is high so that can be by after mounting during backrest reclining End lifts, and the weight of people is applied on slide bar by mounting simultaneously, and slide bar has the gradient of inclination, and the gravity of human body is divided into one Downward pressure and a counteracting force backward.Downward pressure is applied on damper regulation mechanism, counteracting force backward Conduct to the resilience dynamics of backrest；The component that the people of Different Weight is applied on damper regulation mechanism is different, causes damping to be adjusted Frictional force and the counteracting force backward of joint mechanism are the most different；The degree of tightness of damper regulation mechanism can also regulate this friction simultaneously Power；Counteracting force backward is then transmitted on backrest, the people of Different Weight during backrest has fallen, the thrust of backrest feedback Also different；Simultaneously by flexible restoring organ and the cooperation of damper regulation mechanism, make on dynamics that backrest fallen and slide bar backward Counteracting force reach relative equilibrium so that backrest can stop in any angle, and have a just right power to prop up Support back, improves comfort.

As preferably, described damper regulation mechanism includes regulating drive link, the first fixture block, the second fixture block and to damping The fixed support that governor motion and slide bar are played a supporting role, fixed support is connected with arm-rest frame, the first fixture block, the second fixture block set Being located on fixed support, slide bar is arranged between the first fixture block, the second fixture block, and the first fixture block, inner side that the second fixture block is relative Face is provided with the chute coordinated with slide bar, and regulation drive link connects after passing fixed support, the first fixture block, the second fixture block regulation Head, regulation head and regulation drive link synchronous axial system, regulation head rotates and then oppress the second fixture block towards a direction makes first, second folder Block clamping slide bar, regulation head rotates in the opposite direction, makes first, second fixture block unclamp.Spacing between first, second fixture block is also I.e. tightness determines the frictional force size of slide bar, when frictional force is sufficiently large, is locked by slide bar, makes slide bar no longer slide.

As preferably, with the locating piece coordinated with regulation head on the lateral surface of the second fixture block, locating piece and regulation head phase To this one side be provided with the multiple positioning steps being distributed twist from shallow to deep, regulation head have spiral end face and Spiral end face is provided with the boss coordinated with positioning step, and regulation head rotates and makes boss snap in corresponding positioning step.Boss Snapping in different positioning steps when regulating head and rotating makes spacing between first, second fixture block produce change, and then makes the One, the second fixture block produces change to the clamping force size of slide bar, and positioning step has positioning action, makes boss may remain in accordingly Position；Additionally, boss can increase regulation feel with coordinating of positioning step so that formed certainly during two helicoid laminatings Lock.

As preferably, fixed support and slide bar are for being vertically arranged, and described fixed support is the sleeve pipe of hollow, and sleeve pipe divides For extra heavy pipe and tubule two sections, extra heavy pipe forms step with the intersection of tubule, and the first fixture block, the second fixture block are set on tubule, and First fixture block offsets with step.Fixed support and slide bar are for being vertically arranged so that first, second fixture block is in fixed support circumference side To keeping fixing, regulation head can arbitrarily rotate and snap in different gears；Fixed support is divided into thickness two sections so that first, Two fixture blocks are stuck at step, are fixed at fixed support length direction.

As preferably, one end of first, second fixture block is connected by screw, sets between the other end of first, second fixture block There is stage clip.Locating piece snaps in deeper positioning step under regulation head turning effort and inwardly extrudes the second fixture block, and the second fixture block Further extrude slide bar, and when regulate head unclamp namely boss snap in shallower positioning step time, then the second fixture block is in pressure Reset under spring force effect.

As preferably, being arranged with lining on slide bar, described lining is stuck between the first fixture block, the second fixture block, and lining Set outer wall is provided with the breach running through whole lining arranged along liner sleeve length direction.Arranging of lining can increase and slide bar Contact surface, lining has breach and can deform upon when being squeezed, thus increases the cladding dynamics to slide bar.

As preferably, being provided with restriction backrest rotational angle or the spacing gain of mounting movement travel on support, projection is same Time be plugged in spacing gain.

As preferably, the pin joint of backrest and arm-rest frame is positioned at position, back waist point front 10～15cm, backrest with hold up The pin joint of hand cradle is 15～20cm at a distance of the air line distance of mounting.The place that the waist i.e. human body back of point contacts with backrest, logical Cross such position to arrange so that the pin joint of backrest and arm-rest frame is near human spine, when human body is sitting in reclining on chair, The pin joint of backrest and mounting relative rotation center that is backrest and arm-rest frame is close in the rotating against of human body back and leg The heart, people is during backrest rises down, and the two forms concentric circular motion；I.e. back and seat surface is fitted human body all the time, does not produces Relative displacement.

Compared with prior art, design philosophy of the present utility model and providing the benefit that:

This utility model is designed by the linkage of backrest and mounting so that user is during reclining, and mounting synchronizes therewith Motion, seat can play the effect supporting human body waist all the time, be prevented effectively from the generation of " race waist " situation, beneficially human body strong Health；The most such design, owing to medicated cushion is synchronized with the movement with backrest so that user is during reclining, and backrest is close to people all the time Body back is not subjected to displacement, it is ensured that comfortableness.

Mounting is tilting simultaneously, and the angle making backrest fall becomes big, makes the rest that people can more loosen；The most elastic Resetting-mechanism is arranged on backrest and the pin joint position of arm-rest frame or mounting and the pin joint position of backrest, have employed hiding Formula designs, and provides restoring force for backrest, mounting motion, even if in the unloaded state, turn on the premise of the most additionally taking up room Turning backrest can also make it reset, and makes global design more succinct, and saves volume.

Further saying, being provided with the slide bar being obliquely installed below mounting, the weight of people is applied on slide bar by mounting, sliding The gravity of human body is divided into a downward pressure and a counteracting force backward by bar.Downward pressure is applied to damping regulation In mechanism, in counteracting force conduction backward to the resilience dynamics of backrest；The people of Different Weight is applied on damper regulation mechanism Component different, cause the frictional force of damper regulation mechanism and counteracting force backward the most different；The degree of tightness of damper regulation mechanism This frictional force can also be regulated simultaneously；Counteracting force backward is then transmitted on backrest, and the people of Different Weight falls at backrest During, the thrust of backrest feedback is the most different；Simultaneously by flexible restoring organ and the cooperation of damper regulation mechanism, make backrest In the dynamics fallen and slide bar, counteracting force backward reaches relative equilibrium, so that backrest can stop in any angle, And have a just right power to support back, improve comfort；Damper regulation mechanism adjustment seat tool rubbing when having fallen Wiping power, in order to be suitable for the crowd of different weight.

Accompanying drawing explanation

Fig. 1 is this utility model seat tool schematic diagram when original state；

Fig. 2 is this utility model seat tool schematic diagram when backrest reclining state；

Fig. 3 is this utility model seat tool perspective view when original state；

Fig. 4 is the A portion enlarged drawing of Fig. 3；

Fig. 5 is this utility model seat tool perspective view when backrest reclining state；

Fig. 6 is the explosive view of this utility model seat tool；

Fig. 7 is the explosive view of flexible restoring organ；

Fig. 8 is the partial sectional view of flexible restoring organ；

Fig. 9 is the fit structure schematic diagram of damper regulation mechanism and slide bar；

Figure 10 is the partial sectional view that damper regulation mechanism matches with slide bar；

Figure 11 is the explosive view of damper regulation mechanism and slide bar；

Figure 12 is the explosive view of damper regulation mechanism and another angle of slide bar.

Detailed description of the invention

Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is made a detailed explanation.

First defining the reference azimuth of each parts of this utility model, seat is had when normally using by this utility model, and seat has Front be front end, the rear of seat tool includes that the region at backrest place is rear end, people be sitting on seat tool backward by time, backrest rotates Mounting is driven to move to seat tool front.

In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " Gu Fixed " etc. term should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can Being to be joined directly together, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art, can basis Concrete condition understands above-mentioned term concrete meaning in this utility model.

A kind of seat tool as shown in Fig. 1～Fig. 8, it is also possible to be referred to as a kind of leisure chaise longue, including backrest 1, mounting 4 and mounting The arm-rest frame 2 of 4 both sides, two arm-rest frames 2 are connected by chair body bracing frame 3, described backrest 1 left and right sides respectively with two handrails Frame 2 is hinged, and both sides, mounting 4 rear end are hinged with backrest 1 left and right sides respectively, the pin joint of backrest 1 and arm-rest frame 2 and mounting 4 with The pin joint position of backrest 1 is different, and described mounting 4 is inclined relative to horizontal setting, and mounting 4 front end rotates with arm-rest frame 2 It is slidably connected again while connection, drives mounting 4 to seesaw when backrest 1 rotates, in the pin joint position of backrest 1 with arm-rest frame 2 Put or the pin joint position of mounting 4 and backrest 1 is provided with flexible restoring organ 6.

Specifically, the L-shaped connecting plate 10 being symmetricly set on backrest 1 left and right sides, both sides, described mounting 4 rear end are also included Being arranged with two supports 8, an arm 16 of L-shaped connecting plate 10 is fixedly linked with backrest 1, another arm 17 of L-shaped connecting plate 10 with Support 8 is hinged, and the intersection 18 of L-shaped connecting plate 10 two-arm is hinged with arm-rest frame 2 rear end.

As shown in Fig. 6,7,8, described flexible restoring organ 6 is arranged on the pin joint position of mounting 4 and backrest 1, also Just it is provided at another arm 17 and support 8 articulated position of L-shaped connecting plate 10, as shown in Figure 7, Figure 8, flexible restoring organ 6 Including wind spring 12, it is arranged at another arm 17 of L-shaped connecting plate 10 and support 8 articulated position and as the steady pin of rotating fulcrum 19 and the projection 20 that is connected with backrest 1, specifically, projection 20 is fixedly installed on another arm 17 of L-shaped connecting plate 10；Volume One end of spring 12 is connected with steady pin 19, and the other end of wind spring 12 abuts with projection 20, drives projection 20 to promote when backrest 1 rotates Wind spring 12 deforms upon and then produces elastic force；Further saying, having slot 21 on steady pin 19, one end of wind spring 12 is inserted in In slot, the other end of wind spring 12 forms crotch 22, and described crotch 22 is hooked on projection 20；Spiral shell is passed through in the end of steady pin 19 Female 13 and R pins 14 lock；For avoiding rubbing between metal, it is respectively provided with a plastic spacer 9 in wind spring 12 both sides；Support 8 is provided with Limiting backrest 1 rotational angle or the spacing gain 23 of mounting 4 movement travel, projection 20 is plugged in spacing gain 23 simultaneously.

As shown in Fig. 2,3,5, it is respectively provided with a slide bar 7 being inclined relative to horizontal setting in mounting 4 down either side, holds up Connect in hand cradle 2 and have the damper regulation mechanism 5 for slide bar 7 is supported and regulates slide bar 7 force of sliding friction.Before slide bar 7 End is fixedly linked with mounting 4, is fixedly linked with mounting 4 after slide bar 7 rear end bending.

As shown in figs. 9 to 12, described damper regulation mechanism 5 includes regulating drive link the 24, first fixture block the 26, second fixture block 27 and the fixed support 28 of playing a supporting role damper regulation mechanism 5 and slide bar 7, one end of regulation drive link 24 is with tune Joint handle 25, fixed support 28 is connected with arm-rest frame 2, and first fixture block the 26, second fixture block 27 is sheathed on fixed support 28, slide bar 7 are arranged between first fixture block the 26, second fixture block 27, and the relative medial surface of first fixture block the 26, second fixture block 27 be provided with The chute 29 that slide bar 7 coordinates, regulation drive link 24 other end connects after fixed support the 28, first fixture block the 26, second fixture block 27 Being connected to regulation 30, regulation 30 and regulation drive link 24 synchronous axial system, regulation drive link 24 other end is flat, and regulation 30 The mounting groove 31 being correspondingly provided with and regulate drive link 24 other end shape, size matches, regulation drive link 24 other end is inserted in Mounting groove 31 is interior and is screwed, and regulation 30 rotates and then oppress the second fixture block 27 towards a direction makes first, second folder Block 26,27 clamps slide bar 7, and regulation 30 rotates in the opposite direction, makes first, second fixture block 26,27 unclamp.

Specifically, fixed support 28 and slide bar 7 are for being vertically arranged, and described fixed support 28 is the sleeve pipe of hollow, and Sleeve pipe is divided into extra heavy pipe 32 and tubule 33 two sections, extra heavy pipe 32 to form step 34 with the intersection of tubule 33, and the first fixture block 26, second presss from both sides Block 27 is set on tubule 33, and the first fixture block 26 offsets with step 34.

Further say, on the lateral surface of the second fixture block 27 with regulation 30 locating piece 35 coordinated, locating piece 35 This one side relative with regulation 30 is provided with the multiple positioning steps 36 being distributed twist from shallow to deep, regulation 30 tool Having spiral end face 37 and be provided with the boss 38 coordinated with positioning step 36 on spiral end face 37, regulation 30 rotation makes convex Platform 38 snaps in corresponding positioning step 36.

One end of first, second fixture block 26,27 is connected by screw, sets between the other end of first, second fixture block 26,27 There is stage clip 39.

Being arranged with lining 40 on slide bar 7, described lining 40 is stuck between first fixture block the 26, second fixture block 27, and lining Overlap 40 outer walls and be provided with the breach 41 running through whole lining 40 arranged along lining 40 length direction；When lining 40 is by the second folder When block 27 extrudes, it may occur that shrink, increase the cladding dynamics to slide bar 7.

During backrest 1 reclining backward, mounting 4 and slide bar 7 move forward, and mounting 4 rear end is lifted up simultaneously so that mounting 4 And slide bar 7 front end produces low-angle rotation, first, second fixture block 26,27 and regulation 30, regulation drive link 24 is driven to carry out Synchronous axial system, because rotational angle is less herein, does not the most affect the positioning step 36 location to boss 38.

Above content described in this specification is only to this utility model example explanation.This utility model Described specific embodiment can be made various amendment or supplements or use class by person of ordinary skill in the field As mode substitute, without departing from the content of this utility model description or surmount model defined in the claims Enclose, protection domain of the present utility model all should be belonged to.

Claims

1. a seat tool, including backrest, mounting and the arm-rest frame of mounting both sides, it is characterised in that: the described backrest left and right sides Hinged with two arm-rest frames respectively, both sides, mounting rear end are hinged with the backrest left and right sides respectively, backrest and the pin joint of arm-rest frame Different from the pin joint position of backrest with mounting, mounting front end is slidably connected again while being rotationally connected with arm-rest frame, and backrest turns Drive mounting to seesaw time dynamic, set in the pin joint position of the pin joint position of backrest and arm-rest frame or mounting with backrest Flexible resetting-mechanism.

Seat the most according to claim 1 has, it is characterised in that: described flexible restoring organ includes wind spring, is arranged on phase The steady pin answering pin joint position and the projection being connected with backrest, one end of wind spring is connected with steady pin, another of wind spring End abuts with projection, drives projection promote wind spring to deform upon and then produce elastic force when backrest rotates.

Seat the most according to claim 2 has, it is characterised in that: also include being symmetricly set on the L-shaped of the backrest left and right sides even Fishplate bar, described mounting rear end is symmetrically arranged on two with two supports, and an arm of L-shaped connecting plate is fixedly linked with backrest, L-shaped connecting plate Another arm hinged with support, the intersection of L-shaped connecting plate two-arm is hinged with arm-rest frame.

Seat the most according to claim 3 has, it is characterised in that: steady pin is arranged on L-shaped connecting plate as rotating fulcrum At the articulated position of another arm and support, projection is arranged on another arm of L-shaped connecting plate, has slot on steady pin, volume One end of spring is inserted in slot, and the other end of wind spring forms crotch, and described crotch is hooked on projection.

Seat the most according to claim 1 has, it is characterised in that: described mounting is inclined relative to horizontal setting, present Frame down either side is respectively provided with a slide bar being inclined relative to horizontal setting, and arm-rest frame connects to be had for carrying out slide bar Support and regulate the damper regulation mechanism of sliding bar frictional force.

Seat the most according to claim 5 has, it is characterised in that: described damper regulation mechanism include regulating drive link, the One fixture block, the second fixture block and the fixed support that damper regulation mechanism and slide bar are played a supporting role, fixed support and handrail Frame is connected, and the first fixture block, the second fixture block are sheathed on fixed support, and slide bar is arranged between the first fixture block, the second fixture block, and the One fixture block, the medial surface that the second fixture block is relative are provided with the chute coordinated with slide bar, regulation drive link through fixed support, first Connect after fixture block, the second fixture block and have a regulation head, regulation head and regulation drive link synchronous axial system, regulation head rotate towards a direction and then Oppressing the second fixture block and make first, second fixture block clamping slide bar, regulation head rotates in the opposite direction, makes first, second fixture block unclamp.

Seat the most according to claim 6 has, it is characterised in that: coordinate with regulation head on the lateral surface of the second fixture block Locating piece, this one side that locating piece is relative with regulation head is provided with the multiple positioning steps being distributed twist from shallow to deep, Regulation head has spiral end face and is provided with the boss coordinated with positioning step on spiral end face, and regulation head rotates and makes boss Snap in corresponding positioning step.

Seat the most according to claim 6 has, it is characterised in that: fixed support and slide bar are for being vertically arranged, and described is fixing Support is the sleeve pipe of hollow, and sleeve pipe is divided into extra heavy pipe and tubule two sections, extra heavy pipe to form step, the first folder with the intersection of tubule Block, the second fixture block are set on tubule, and the first fixture block offsets with step.

Seat the most according to claim 6 has, it is characterised in that: one end of first, second fixture block is connected by screw, the One, it is provided with stage clip between the other end of the second fixture block.

Seat the most according to claim 6 has, it is characterised in that: being arranged with lining on slide bar, described lining is stuck in the Between one fixture block, the second fixture block, and liner outer wall is provided with the breach running through whole lining arranged along liner sleeve length direction.

11. seat according to claim 4 tools, it is characterised in that: on support, it is provided with restriction backrest rotational angle or mounting The spacing gain of movement travel, projection is plugged in spacing gain simultaneously.

12. seat according to claim 1 tools, it is characterised in that: before the pin joint of backrest and arm-rest frame is positioned at back waist point 10～15cm positions, side, backrest is 15～20cm with the air line distance of the pin joint mounting apart of arm-rest frame.