CN214230619U - Leg support bracket of comfortable chair - Google Patents

Leg support bracket of comfortable chair Download PDF

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Publication number
CN214230619U
CN214230619U CN202021373392.3U CN202021373392U CN214230619U CN 214230619 U CN214230619 U CN 214230619U CN 202021373392 U CN202021373392 U CN 202021373392U CN 214230619 U CN214230619 U CN 214230619U
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CN
China
Prior art keywords
bracket
leg
connecting rod
seat frame
plate
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CN202021373392.3U
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Chinese (zh)
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黄子源
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Individual
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Individual
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    • 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
    • A47C7/56—Parts or details of tipping-up chairs, e.g. of theatre 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
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/467—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by fluid means
    • 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
    • A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
    • A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
    • A47C7/5066—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type by rotation
    • 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
    • A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest
    • A47C1/035—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest
    • 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
    • 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
    • A47C7/36—Support for the head or the back
    • A47C7/38—Support for the head or the back for the head
    • 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
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/446—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with fluid springs
    • 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
    • A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
    • A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
    • A47C7/5062—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type rectilinearly
    • 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
    • A47C7/62—Accessories for chairs
    • A47C7/72—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like
    • A47C7/74—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling
    • A47C7/748—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling for heating

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Special Chairs (AREA)
  • Chairs Characterized By Structure (AREA)

Abstract

The utility model belongs to the technical field of chairs, in particular to a leg support bracket of a comfortable chair, which comprises a leg bracket and a seat frame, the upper end of the leg bracket is movably connected with the front end of the seat frame, the bottom of the seat frame is provided with a driving mechanism, the leg bracket is provided with a movable auxiliary bracket, the leg bracket is provided with a connecting rod mechanism which drives the auxiliary bracket to slide and open or retract along with the overturn of the leg bracket, the connecting rod mechanism comprises a first connecting rod, a second connecting rod and a third connecting rod which are connected in sequence, the middle part of the second connecting rod is movably connected with the leg bracket through a pin, the upper end of the first connecting rod is movably connected with the seat frame through a first joint bearing, the lower end of the first connecting rod is connected with one end part of the second connecting rod through a second joint bearing, the upper end of the third connecting rod is movably connected with the other end of the second connecting rod, the lower end of the third connecting rod is movably connected with the auxiliary bracket, the leg support bracket can automatically extend along with the overturn of the leg support, the leg support does not collide with the ground during extension, and has the advantages of simple structure, safety, reliability and good use effect.

Description

Leg support bracket of comfortable chair
Technical Field
The utility model belongs to the technical field of the chair, concretely relates to leg of comfortable chair holds in palm support.
Background
Under the fast-paced living and working environment, people have higher requirements on the functions of the chair, and people are eager to lie on the chair for relaxation and close eyes for spirit when needing to have a rest after working for a long time so as to improve the working efficiency. Therefore, the comfortable chair with multiple adjusting functions is produced by exercise.
The main adjusting functions of the leisure and comfortable chair comprise backrest inclination angle adjustment, headrest angle adjustment, leg adjustment and the like. The leg adjustment includes the adjustment of leg support angle, the adjustment of leg support length, the realization of leg support adjustment needs to rely on the adjustment realization of leg support, leg support and seat frame swing joint, it controls to set up actuating mechanism and the opening of leg support in seat frame department, the angle of control leg support, set up the auxiliary bracket again on the leg support, through the vice bracket of cylinder or other reciprocating drive part drive, realize the length adjustment of leg support, this kind of structure is complicated, need two drive parts, and is high in cost, and, the auxiliary bracket is probably to touch to earth at the in-process of opening, cause trouble, danger.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to above-mentioned defect, provide a leg of comfortable chair and hold in the palm support, the leg holds in the palm the support and can follow the upset that the leg held in the palm and extend automatically, can not collide ground in the extension that the leg held in the palm, simple structure, safe and reliable, excellent in use effect.
The use effect is good, and the use effect is good,
the utility model provides a technical scheme that its technical problem adopted as follows:
the utility model provides a leg of comfortable chair holds in palm support, includes the seat frame of leg bracket, supporting leg bracket, leg bracket upper end and seat frame front end swing joint, the bottom of seat frame be equipped with the actuating mechanism that the drive leg bracket overturned forward, the leg bracket on be equipped with a movable sub-bracket, be equipped with the link mechanism that the drive sub-bracket opened or packed up along with opening or packing up of leg bracket on the leg bracket, link mechanism is including the first connecting rod, second connecting rod, the third connecting rod of connecting in order, the middle part of second connecting rod passes through pin swing joint with the leg bracket, the upper end of first connecting rod passes through first joint bearing and seat frame swing joint, the lower extreme of first connecting rod passes through a second joint bearing and an end connection of second connecting rod, the upper end of third connecting rod and the other end swing joint of second connecting rod, the lower extreme and the sub-bracket swing joint of third connecting rod.
Furthermore, the driving mechanism comprises a push plate and a telescopic driving element for controlling the push plate to move back and forth, the rear end of the telescopic driving element is movably connected with the bottom of the seat frame, the output end of the telescopic driving element is connected with the front part of the push plate to push the push plate to move back and forth, the front end of the push plate is movably connected with the upper end of the leg bracket, the upper part of the leg bracket is provided with a leg support mounting rack movably connected with the seat frame, the leg support mounting rack comprises a support rod and leg support mounting plates at two sides of the support rod, the leg support mounting plates are detachably connected with the seat frame, the end parts of the support rod are rotatably matched with the leg support mounting plates, the support rod is provided with an arc support plate extending backwards and downwards, the support plate is fixedly connected with the support rod, the rear end of the support plate is movably connected with the front part of the push plate, the push plate forwards pushes the leg support plate and the support plate, the support plate swings to guide the push plate forwards to overturn and open the leg support bracket forwards, and the push plate backwards pulls to control the leg bracket to retract, the bottom of the seat frame is provided with a guiding and limiting mechanism for guiding and limiting the push plate in the front-back movement.
Further, the figure of push pedal be two, two push pedal bilateral symmetry's setting is in the present frame bottom, flexible drive element be electric putter, electric putter sets up the side at one of them push pedal, the plate body of the push pedal that flexible drive element output front portion corresponds is equipped with the kink of inwards buckling, the kink makes the plate body at push pedal rear portion form the installation space that sets up flexible drive element to the inboard biasing of seat frame, the department of buckling outside of push pedal is equipped with a curb plate, the curb plate front end is connected through the plate body of the push pedal of pin and the department of buckling front side, the rear end of curb plate is connected through the plate body of the push pedal of round pin axle and the department of buckling rear side, electric putter's output is connected at the round pin axle.
Furthermore, the leg support mounting plate is detachably connected with the seat frame through screws or bolts.
Furthermore, the direction stop gear including offer the guiding hole at push pedal rear portion, the leading wheel of seat frame bottom, the guiding hole is along push pedal moving direction's waist type hole, the leading wheel card in the guiding hole with guiding hole sliding fit, the rigidity of leading wheel, the tip contact of leading wheel and guiding hole is spacing to the back-and-forth movement stroke of push pedal.
Furthermore, the left side and the right side of the auxiliary bracket are provided with sliding grooves, and the leg bracket is provided with convex plates embedded into the sliding grooves and in sliding fit with the sliding grooves.
Furthermore, the diameter of the wheel clamped into the guide hole by the guide wheel is consistent with the width of the guide hole.
Furthermore, the front part of the seat frame is provided with a connecting bulge connected with the upper end of the first connecting rod.
The utility model has the advantages that: by adopting the scheme, the leg support composed of the leg bracket and the auxiliary bracket has better linkage, the electric push rod pushes the push rod to control the leg bracket to overturn, the overturning of the leg bracket controls the auxiliary bracket to slide on the leg bracket under the action of the three connecting rods so as to realize the sliding-out or resetting of the auxiliary bracket, the angle change and the length change of the leg support are realized, the three-connecting-rod mechanism 4 realizes the smooth sliding-out of the auxiliary bracket and the sliding-out of the auxiliary bracket again after the leg bracket overturns for a certain angle, the condition that the bottom of the auxiliary bracket touches the ground in the opening process is effectively avoided through the three-connecting-rod structure, the interference is avoided, the use process is safe and smooth, no special driving element is needed for the sliding of the auxiliary bracket, compared with the prior art, the driving element is saved, the manufacturing cost is reduced, and the first joint bearing and the second joint bearing are used for eliminating the first connecting rod, The wearing and tearing between the second connecting rod, importantly, joint bearing can be along with first connecting rod, the change two changes of second connecting rod angle, and effectual effect of force transmission, better performance mechanics effect exert the effect of the thrust or the pulling force of first connecting rod, second connecting rod for the abundant performance function of three connecting rod structures.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of a partial structure of a push plate according to an embodiment of the present invention.
Fig. 3 is a side view of an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a leg rest according to an embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of a leg rest according to an embodiment of the present invention.
Wherein: the leg support comprises a leg support 1, a seat frame 2, a connecting bulge 21, a guide wheel 22, a support rod 3, a support plate 31, a leg support mounting plate 4, a push plate 5, a side plate 51, a guide hole 52, an electric push rod 6, an auxiliary support 7, a first connecting rod 8, a second connecting rod 9, a third connecting rod 10, a first joint bearing 11, a second joint bearing 111, a convex plate 12 and a sliding groove 13.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1: referring to fig. 1-3, a leg rest support of a comfortable chair comprises a leg rest 1 and a seat frame 2 supporting the leg rest 1, wherein the upper end of the leg rest 1 is movably connected with the front end of the seat frame 2 through a leg rest mounting rack, the leg rest mounting rack comprises a support rod 3 and leg rest mounting plates 4 arranged at two sides of the support rod 3, the leg rest mounting plates 4 are detachably connected with the seat frame 2 through bolts, the end part of the support rod 3 is rotatably matched with the leg rest mounting plates 4, the connection structure is convenient to detach, the bottom of the seat frame 2 is provided with a driving mechanism driving the leg rest 1 to turn forwards, the driving mechanism comprises a push plate 5 and an electric push rod 6 controlling the push plate 5 to move forwards and backwards, the rear end of the electric push rod 6 is movably connected with the bottom of the seat frame 2, the output end of the electric push rod 6 is connected with the front part of the push plate 5 to push the push plate, the support rod 3 is provided with an arc support plate 31 extending towards the lower back side, the upper end of the support plate 31 is fixedly connected with the support rod 3, the rear end of the support plate 31 is hinged with the front part of the push plate 5, the push plate 5 moves forwards to push the leg bracket 1 and the support plate 31, the support plate 31 swings to realize forward turning and opening of the leg bracket 1, the push plate 5 moves backwards to pull and control the leg bracket 1 to retract, the position of the upper end of the support plate 31 is fixed, the support plate 31 is pushed to swing by the push plate 5 by taking the support plate as an axis, the support plate 31 is an arc-shaped structure protruding towards the front side of the seat frame framework, the swing of the support plate causes the change of the motion state of the push plate, the front part of the push plate is changed from forward and backward movement to forward and backward movement and upward movement, the front part of the push plate presents an arc-shaped comprehensive motion state, which is specifically represented as that, thereby promote the leg bracket and turn forward and open, when the push pedal moves backward, the component of downside backward has to the leg bracket, the better closure of pulling leg bracket resets, extension board 31 has the effect of direction to the anterior motion of push pedal, can change the direction of motion of push pedal by a small margin, make the more smooth and easy upset of leg bracket, the extension board has the guide effect to the motion of push pedal, effort to the push pedal has the conversion, the extension board turns into the back-and-forth + upper and lower combined motion with the back-and-forth movement of push pedal, the leg bracket can be protected again in the upset of leg bracket can be realized to the effort of push pedal to the leg bracket, avoid the leg bracket to be pushed up badly or to draw badly, the life of effectual extension leg adjustment support.
Referring to fig. 4 and 5, a movable auxiliary bracket 7 is arranged on a leg bracket 1, a link mechanism for driving the auxiliary bracket 7 to slide open or close along with the opening or closing of the leg bracket 1 is arranged on the leg bracket 1, convex plates 12 are arranged on the left and right sides of the leg bracket 1, sliding grooves 13 are arranged on two sides of the auxiliary bracket 10, the convex plates 12 are embedded into the sliding grooves 13 and keep sliding fit with the sliding grooves 13 to realize the sliding of the auxiliary bracket on the leg bracket, the link mechanism comprises a first connecting rod 8, a second connecting rod 9 and a third connecting rod 10 which are sequentially connected, in order to reduce the weight, the leg bracket 1 and the auxiliary bracket 7 are both in a frame structure, the middle part of the leg bracket 1 is provided with a connecting plate, the middle part of the second connecting rod 9 is movably connected with the middle part of the connecting plate on the leg bracket through a pin, the upper end of the first connecting rod 8 is movably connected with a seat frame 2 through a first joint bearing 11, a connecting bulge 21 connected with the first joint bearing 11 is arranged at the corresponding position of the seat frame 2, the connecting bulge 21 fixes the position of the first joint bearing 11, the upper end of the first connecting rod 8 is fixed, the connecting bulge 21 is convenient for controlling the position of the first joint bearing, so that the overturning state of the first connecting rod is adjusted, the opening time of the auxiliary bracket is adjusted, the lower end of the first connecting rod 8 is connected with the right end of the second connecting rod 9 through the second joint bearing 111, the upper end of the third connecting rod 10 is movably connected with the left end of the second connecting rod 9, and the lower end of the third connecting rod 10 is hinged with the upper end of the auxiliary bracket 7.
The electric push rod pushes the push rod to move forwards, the push rod pushes the leg bracket to turn over and open, in the process of turning over and opening the leg bracket, because the lower end of the first connecting rod is connected with the second connecting rod fixed on the leg bracket, the first connecting rod turns over synchronously with the leg bracket, because the upper end of the first connecting rod is connected with the seat frame, the upper end of the first connecting rod is fixed, the lower end of the first connecting rod is lifted and pulled when the first connecting rod turns over, the lower end of the first connecting rod can gradually move to the upper part of the leg bracket along the leg bracket, so that the right end of the second connecting rod is pulled to move to the upper part of the leg bracket along the leg bracket, because the middle of the second connecting rod is movably connected with the leg bracket, the left end of the second connecting rod can move to the lower part of the leg bracket along the leg bracket body, and then the second connecting rod pushes the third connecting rod to move to the lower part of the leg bracket along the leg bracket body, because the lower end of the third connecting rod is connected with the auxiliary bracket, the auxiliary bracket is pushed out from the leg bracket, the turning opening and the extension of the leg adjusting bracket are realized, the support of the leg is improved, the first connecting rod is turned gradually along with the turning of the leg bracket, the lower end of the first connecting rod is gradually lifted, the lifting degree is small, only when the first connecting rod is turned to a certain angle, namely the bottom end of the first connecting rod is lifted to a certain angle, the second pull rod can be pulled, the auxiliary bracket does not slide out at the initial turning stage of the leg bracket, the length of the leg bracket is unchanged, the auxiliary bracket can slide out after the leg bracket is opened to a certain angle, the three-connecting-rod structure has the function of adjusting the sliding-out time of the auxiliary bracket, the damage caused by the fact that the auxiliary bracket is opened to touch the ground at the initial stage of opening the leg bracket can be avoided, the leg bracket is opened more smoothly, the pedal bracket has the function of automatic extension after being opened to a proper angle, the use effect is better; the electric push rod pulls the push rod to move backwards, the push rod moves backwards to pull the leg bracket to be closed, in the process of turning and closing the leg bracket, the first connecting rod synchronously turns over and resets along the leg bracket, the lower end of the first connecting rod swings downwards, the right end of the second connecting rod is pulled to move towards the lower part of the leg bracket along the leg bracket, the left end of the second connecting rod can move towards the upper part of the leg bracket along the leg bracket frame body, then the second connecting rod pushes the third connecting rod to move towards the upper part of the leg bracket along the leg bracket frame body, and the auxiliary bracket is pulled to reset, so that the turning and closing of the leg adjusting bracket are realized, the three-connecting-rod structure consisting of the first connecting rod, the second connecting rod and the third connecting rod ensures that the auxiliary bracket does not need an additional driving part for opening, the opening and the resetting of the auxiliary bracket follow the turning of the leg bracket, compared with the prior art, the structure of the leg bracket is simplified, the manufacturing cost is reduced, and the opening and the closing process of the auxiliary bracket is smoothly controlled by the three connecting rods, the adjusting function of the leg support is exerted, the left end of the second connecting rod is movably connected with the upper end of the third connecting rod through a pin rod, the pin rods of the second connecting rod and the third connecting rod are sleeved with sleeves, nuts are arranged at the end parts of the two ends of the pin rod, the pin rod realizes the movable fit of the second connecting rod and the third connecting rod, the sleeves are arranged to match the distance between the third connecting rod and the second connecting rod, the second connecting rod and the third connecting rod are not in the same plane, the sleeves enable the second connecting rod and the third connecting rod to be matched with the respective states when being pulled and matched, the rod bodies of the second connecting rod and the third connecting rod are not deflected axially, the abrasion of the connecting part can be effectively reduced, the first joint bearing 11 and the second joint bearing 111 at the two ends of the first connecting rod can effectively reduce the abrasion of the connecting part, in the action process of the first connecting rod, because the first connecting rod and the second connecting rod are not in the same plane, the rod body of the first connecting rod can deflect along the self circumference direction during the operation, the sheet can cause the interference and abrasion of the joint of the first connecting rod and the second connecting rod and the seat frame, even damage the rod body of the first connecting rod, and the deflection of the first joint bearing 11 and the second joint bearing 111 is effectively eliminated, so that the three-connecting-rod mechanism is more smoothly matched.
In order to improve the stability of the overturning motion of the leg bracket, the number of the push plates 5 is two, the two push plates 5 are arranged at the bottom of the seat frame 2 in bilateral symmetry, the electric push rod 6 is arranged at the side edge of one of the push plates 5, the front part of the push plate body of the seat frame is bent inwards to ensure that the cross section of the push plate is in a shape like the Chinese character 'ji', a side plate 51 is arranged at the outer side of the bent part of the push plate 5, the front end of the side plate 51 is connected with the plate body of the push plate at the front side of the bent part through a pin, the rear end of the side plate 51 is connected with the plate body of the push plate at the rear side of the bent part through a pin shaft, the output end of the electric push rod is connected on the pin shaft, the bent part ensures that the plate body at the rear part of the push plate is biased towards the inner side of the seat frame, the installation space for installing the electric push rod is formed at the biased rear plate body, so that the electric push rod is exactly matched with the push rod, the limited transverse range of the seat frame, the space occupied by the push plate and the electric push rod is reduced, the whole structure is compact, the size and the beauty of the whole comfortable chair support are improved, the pin shaft, the side plate, the pin at the front end of the side plate and the plate body of the push plate form a parallelogram, the connection between the output end of the electric push rod 6 and the push plate is kept stable, the side plate and the push plate are always kept stable in the pushing process of the electric push rod, the pin shaft is always kept vertical to the push plate, the pushing direction of the electric push rod is not deviated, the driving force of the electric push rod is always consistent with the running direction of the push plate, the loss of the driving force is reduced, more importantly, the stability of the push plate pushed by the electric push rod is improved, make the upset of leg bracket open or close and keep better stability, improve the stability of shank adjustment support, excellent in use effect, stability is good, makes increase of service life, and the assembly operation of still being convenient for of this kind of structure helps improving production efficiency.
Referring to fig. 3, the rear portion of the plate body of the push plate 5 is provided with a guide hole 52, the guide wheel 22 at the bottom of the seat frame 2 is provided with a waist-shaped hole 52 along the length direction of the plate body of the push plate 5, the guide wheel 22 is clamped into the guide hole 52 and is in sliding fit with the guide hole 52, the position of the guide wheel 22 is fixed, the guide wheel 52 contacts with the end portion of the guide hole 22 to limit the back-and-forth movement stroke of the push plate, in the process of moving the push plate back and forth, the guide wheel slides in the guide hole to guide and limit the movement track of the push plate, so that the opening and closing movement track of the leg bracket is smoother, the guide wheel is tightly matched with the guide hole and has no fit clearance in the longitudinal direction, the guide wheel has a supporting function on the rear side of the push plate, and in the working and using process of the leg bracket, because the front portion of the push plate is connected with the leg bracket, the electric push rod in the middle of the push plate is connected, atress in the push pedal, the leading wheel has the supporting role to push pedal rear portion, the utility of sharing the effort has to the push pedal, make the push pedal remain stable in service, make the structure of push pedal more stable, firm, improve the anti strain ability of push pedal, the leading wheel is rotatable, the leading wheel is little with the cooperation wearing and tearing of guiding hole, the leading wheel is the I shape structure, the leading wheel is by firm chucking at the guiding hole, guarantee effectual cooperation, the structural stability of improvement push pedal department.
Example 2: the difference between this embodiment and embodiment 1 is that in this embodiment, the second link and the third link are also connected by a joint bearing, so as to better exert mechanical effect and eliminate abrasion.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the techniques of the present invention are substantially any simple modification and equivalent changes to the above embodiments, all falling within the protection scope of the present invention.

Claims (8)

1. A leg support bracket of a comfortable chair comprises a leg bracket and a seat frame supporting the leg bracket, wherein the upper end of the leg bracket is movably connected with the front end of the seat frame, it is characterized in that the bottom of the seat frame is provided with a driving mechanism for driving the leg bracket to turn forwards, the leg bracket on be equipped with a movable auxiliary bracket, be equipped with the link mechanism that the drive auxiliary bracket slided and opens or pack up along with opening or packing up of leg bracket on the leg bracket, link mechanism includes the first connecting rod, the second connecting rod, the third connecting rod that connect in order, the middle part of second connecting rod passes through pin swing joint with the leg bracket, the upper end of first connecting rod passes through first joint bearing and seat frame swing joint, the lower extreme of first connecting rod passes through second joint bearing and is connected with an end of second connecting rod, the upper end of third connecting rod and the other end swing joint of second connecting rod, the lower extreme and the auxiliary bracket swing joint of third connecting rod.
2. The leg rest support of a comfortable chair as claimed in claim 1, wherein the driving mechanism comprises a push plate, a telescopic driving element for controlling the push plate to move back and forth, the rear end of the telescopic driving element is movably connected with the bottom of the seat frame, the output end of the telescopic driving element is connected with the front part of the push plate to push the push plate to move back and forth, the front end of the push plate is movably connected with the upper end of the leg bracket, the upper part of the leg bracket is provided with a leg rest mounting frame movably connected with the seat frame, the leg rest mounting frame comprises a support rod and leg rest mounting plates at both sides of the support rod, the leg rest mounting plates are detachably connected with the seat frame, the end parts of the support rod are rotatably matched with the leg rest mounting plates, the support rod is provided with an arc support plate extending towards the lower rear side, the support plate is fixedly connected with the support rod, the rear end of the support plate is movably connected with the front part of, the push plate moves backwards and pulls the control leg bracket to be folded, and the bottom of the seat frame is provided with a guiding and limiting mechanism for guiding and limiting the push plate in the process of moving forwards and backwards.
3. The leg rest bracket of a comfortable chair according to claim 2, characterized in that the number of the push plates is two, the two push plates are arranged at the bottom of the seat frame in bilateral symmetry, the telescopic driving element is an electric push rod, the electric push rod is arranged at the side of one of the push plates, the plate body of the push plate corresponding to the front part of the output end of the telescopic driving element is provided with a bending part which is bent inwards, the bending part enables the plate body at the rear part of the push plate to be biased towards the inner side of the seat frame to form an installation space for the telescopic driving element, a side plate is arranged at the outer side of the bending part of the push plate, the front end of the side plate is connected with the plate body of the push plate at the front side of the bending part through a pin, the rear end of the side plate is connected with the plate body of the push plate at the rear side of the bending part through a pin, and the output end of the electric push rod is connected with the pin.
4. A leg rest support for a comfort chair as claimed in claim 2, wherein the leg rest mounting plate is removably connected to the seat frame by screws or bolts.
5. The leg rest bracket of a comfortable chair according to claim 2, characterized in that the guiding and limiting mechanism comprises a guiding hole arranged at the rear part of the push plate and a guiding wheel arranged at the bottom of the seat frame, the guiding hole is a waist-shaped hole along the moving direction of the push plate, the guiding wheel is clamped into the guiding hole and is in sliding fit with the guiding hole, the position of the guiding wheel is fixed, and the guiding wheel is contacted with the end part of the guiding hole to limit the back-and-forth moving stroke of the push plate.
6. The leg rest bracket of a comfortable chair according to claim 1, characterized in that the left and right sides of the secondary bracket are provided with sliding grooves, and the leg rest is provided with convex plates embedded into the sliding grooves and matched with the sliding grooves in a sliding manner.
7. A leg rest support for a comfort chair as claimed in claim 5, wherein the diameter of the wheel of the guide wheel engaging into the guide hole is substantially the same as the width of the guide hole.
8. A leg rest support for a comfort chair as claimed in claim 1, wherein the front portion of the seat frame is provided with a coupling protrusion coupled to the upper end of the first link.
CN202021373392.3U 2019-10-14 2020-07-13 Leg support bracket of comfortable chair Active CN214230619U (en)

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CN2019109745510 2019-10-14
CN201910974551 2019-10-14

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Family Applications (11)

Application Number Title Priority Date Filing Date
CN202021369739.7U Active CN213940235U (en) 2019-10-14 2020-07-13 Installation tilting mechanism of shank support of comfortable chair
CN202010666863.8A Pending CN112716190A (en) 2019-10-14 2020-07-13 Comfortable chair and comfortable chair support thereof
CN202021369786.1U Active CN213940229U (en) 2019-10-14 2020-07-13 Head support frame of comfortable chair
CN202021370055.9U Active CN214230617U (en) 2019-10-14 2020-07-13 Quick connecting structure for backrest framework and seat frame framework of comfortable chair
CN202021369624.8U Active CN214072595U (en) 2019-10-14 2020-07-13 Backrest structure for a seat
CN202010666871.2A Pending CN112716193A (en) 2019-10-14 2020-07-13 Comfortable chair support with zero gravity adjusting function
CN202010666961.1A Pending CN112716192A (en) 2019-10-14 2020-07-13 Leg adjusting bracket of comfortable chair
CN202021369736.3U Active CN214072584U (en) 2019-10-14 2020-07-13 Zero-gravity turnover mechanism for comfortable chair
CN202021369694.3U Active CN214382301U (en) 2019-10-14 2020-07-13 Rotary connecting device and seat frame framework of comfortable chair with same
CN202021373392.3U Active CN214230619U (en) 2019-10-14 2020-07-13 Leg support bracket of comfortable chair
CN202021370564.1U Active CN212591176U (en) 2019-10-14 2020-07-13 Leg adjusting bracket of comfortable chair

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Application Number Title Priority Date Filing Date
CN202021369739.7U Active CN213940235U (en) 2019-10-14 2020-07-13 Installation tilting mechanism of shank support of comfortable chair
CN202010666863.8A Pending CN112716190A (en) 2019-10-14 2020-07-13 Comfortable chair and comfortable chair support thereof
CN202021369786.1U Active CN213940229U (en) 2019-10-14 2020-07-13 Head support frame of comfortable chair
CN202021370055.9U Active CN214230617U (en) 2019-10-14 2020-07-13 Quick connecting structure for backrest framework and seat frame framework of comfortable chair
CN202021369624.8U Active CN214072595U (en) 2019-10-14 2020-07-13 Backrest structure for a seat
CN202010666871.2A Pending CN112716193A (en) 2019-10-14 2020-07-13 Comfortable chair support with zero gravity adjusting function
CN202010666961.1A Pending CN112716192A (en) 2019-10-14 2020-07-13 Leg adjusting bracket of comfortable chair
CN202021369736.3U Active CN214072584U (en) 2019-10-14 2020-07-13 Zero-gravity turnover mechanism for comfortable chair
CN202021369694.3U Active CN214382301U (en) 2019-10-14 2020-07-13 Rotary connecting device and seat frame framework of comfortable chair with same

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CN202021370564.1U Active CN212591176U (en) 2019-10-14 2020-07-13 Leg adjusting bracket of comfortable chair

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024078178A1 (en) * 2022-10-13 2024-04-18 德沃康科技集团有限公司 Seat frame and sofa seat

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114027661A (en) * 2021-11-25 2022-02-11 安吉富和家具有限公司 Chair leaning structure and chair
CN114027658B (en) * 2021-12-03 2024-06-07 鹤山市四方家具有限公司 Engineering chair
CN116659795A (en) * 2023-06-01 2023-08-29 中国汽车工程研究院股份有限公司 Automobile crash test rigid seat with zero gravity characteristic

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024078178A1 (en) * 2022-10-13 2024-04-18 德沃康科技集团有限公司 Seat frame and sofa seat

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CN213940229U (en) 2021-08-13
CN112716193A (en) 2021-04-30
CN213940235U (en) 2021-08-13
CN214072595U (en) 2021-08-31
CN214382301U (en) 2021-10-12
CN212591176U (en) 2021-02-26
CN214072584U (en) 2021-08-31
CN112716190A (en) 2021-04-30
CN112716192A (en) 2021-04-30
CN214230617U (en) 2021-09-21

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