CN209152736U - Swivel chair - Google Patents

Abstract

This swivel chair seat cushion, swivel chair includes fixed seat frame and two cantilevers being connected in fixed seat frame, this seat cushion includes swinging substrate and buttocks seat board and swinging substrate front and back to swing up and down, there is the space for the swing substrate receiving inside buttocks seat board and swing substrate and be located in the space, the two sides front end and fixed seat frame for swinging substrate are articulated and connected, the two sides front end of buttocks seat board and fixed seat frame articulated connection, the rear end sides for swinging substrate are respectively equipped with limitation pin, the waist-shaped hole one being inserted into one by one for the limitation pin is respectively equipped on the inside of one end of fixed seat frame in every cantilever, the waist-shaped hole two being inserted into one by one for the limitation pin is respectively equipped in the two sides rear end of buttocks seat board, this seat cushion further includes the fore beam for being fixed on two cantilever free ends, elastic connection structure is equipped between substrate and fore beam swinging.

Description

Swivel chair

Technical field

The utility model belongs to chair technology field more particularly to a kind of swivel chair.

Background technique

Chair is the common daily necessity of one of life.

The structure of chair includes bracket and the cushion that is fixed on bracket, and backrest is equipped on bracket.

Its two kind with fixed and lift of existing many backrests, and the backrest of lift its lift adjustment its adopt It is locked after being adjusted with screw etc. mode.

Its lift adjustment of this mode is relatively complicated and adjusting stability is poor.

Secondly, existing backrest its can not be swung left and right and backrest can not be tilted backwards individually close to one section of neck, make With being restricted.

Utility model content

The purpose of this utility model be in view of the above-mentioned problems, to provide a kind of more convenient and stability of adjusting more preferable, it is practical The stronger swivel chair of property.

In order to achieve the above objectives, the utility model uses following technical proposal: this swivel chair includes ratchet wheel component and connection Lifting device on ratchet wheel component is connected with fixed seat frame on lifting device, is connected with handrail in the two sides of fixed seat frame, It is connected with backrest module on rear side of fixed seat frame, the backrest module includes rectangular backrest frame, the back side of rectangular backrest frame Top side is connected with support frame by triangle part, and the support frame includes fixed seat frame and is connected to consolidating on rear side of fixed seat frame Fixed column further includes back rest supports column, is equipped with matching hole in the lower end of back rest supports column and fixed column inserts in the matching hole, It is equipped with several adjustment holes being arranged along matching hole axially spaced-apart on the hole wall of matching hole, is inserted in matching hole in fixed column One end is equipped with U-shaped resilient locking element and one end of U-shaped resilient locking element inserts in any one adjustment hole, inserts in fixed column It is equipped between one end in matching hole and back rest supports column and adjusts guiding mechanism, the upper end of back rest supports column passes through elastic connection machine Structure is connect with triangle part, is connected with headrest assemblies in rectangular backrest arch.

Ratchet wheel component and lifting device are the prior art.

The upper end Liang Ge branch of triangle part is connect by tubular rubber connecting column with rectangular backrest frame.U-shaped resilient locking element It is made of a metal bar material bending.Matching hole and fixed column are designed, axial guiding can be formed, rising-falling tone can be improved The stability of section.

Adjustment hole and U-shaped resilient locking element are designed, when needing to carry out lift adjustment, U-shaped resilient locking element is outside at this time One end in adjustment hole is inserted under the adjusting of power and is detached from adjustment hole, discharges external force at this time behind lifting to setting position and forces U The corresponding one end of shape resilient locking element simultaneously inserts in adjustment hole, reaches the height adjustment of backrest height.

The adjusting guiding mechanism of design, can be further improved the regularity and stability of lift adjustment.

The flexible connection mechanism of design may be implemented individually tilting backwards close to neck location, further enrich Using function and improve practicability.

The flexible connection mechanism includes the column connector made of rubber material, is arranged in back rest supports column upper end And the lower locating notch close to human body side, it is equipped with upper locating notch in the corner of triangle part, the lower end of column connector is inserted In lower locating notch and between column connector and lower locating notch be equipped with lower fixed connection structure, column connector it is upper End inserts in locating notch and is equipped between column connector and upper locating notch upper fixed connection structure, connects in column Part is equipped with along column connector shaft close to the one side of human body to the positioning groove body of setting, and to be stuck in the locating slot intracorporal Elastomer block, the upper end of elastomer block are stuck in the upper locating notch and are fixed on by the upper locking member through column connector On triangle part, the lower end of elastomer block is stuck in the lower locating notch and is fixed by the lower locking member through column connector In back rest supports column upper end.Column connector may be implemented to be swung left and right, and deformation backward.

The positioning groove body lower end slot bottom is equipped with the bottom incline tilted backwards being arranged downward, sets in the lower end of elastomer block There is the lower inclination matching surface to match with the bottom incline.Its elastic recoil that can be further improved junction of the structure Performance and further enhance structural strength.

The described positioning groove body upper end has inclination forward towards the top incline of upper setting, the upper end of elastomer block be equipped with The upper inclination matching surface that the top incline matches.Its elastic recoil performance that can be further improved junction of the structure With further enhance structural strength.

The elastomer block inserts in one end in lower locating notch equipped with lower limit step；Upper positioning is inserted in elastomer block to lack One end in mouthful is equipped with upper limit step.The structure its can be to avoid excessive deep assembling.Rear side in the middle part of the elastomer block Outer wall is equipped with several spaced U-shaped relief grooves up and down.The structure its can form self-protection.

Upper fixed connection structure includes positioning tube in at least one being arranged in upper locating notch, in the upper end of elastomer block Rear side is equipped with the upper fixation hole being inserted into one by one for the upper positioning tube.Upper locking member is passed through from upper positioning tube placed in the middle.

The lower fixed connection structure includes positioning tube under at least one being arranged in lower locating notch, in elastomer block Lower end on rear side of be equipped with the lower fixed hole being inserted into one by one for the lower positioning tube.Lower locking member is worn from lower positioning tube placed in the middle It crosses.

The adjusting guiding mechanism includes the guide runner connecting in adjustment hole and with fixed column vertical sliding, Fixed column be equipped at least one waist-shaped hole, be fixed on guide runner at least one through the waist-shaped hole and with backrest branch The guide pin of dagger connection.

Moved by guide pin along waist-shaped hole, the regularity and stability of lifting moving can be improved, meanwhile, also into One step improves whole structural strength.Alternatively scheme, the adjusting guiding mechanism include mutually being slidably connected Guide rail and slide block structure.

The fixed column back side is equipped with strip groove, guide runner be located in strip groove and the two sides of guide runner and The cell wall of strip groove is slidably connected, and one of guide runner far from strip groove slot bottom is sticked in the middle part of U-shaped resilient locking element Face.

The design of strip groove can expand the contact area with guide runner, and can be further improved sliding Regularity and stability.U-shaped resilient locking element can force guide runner to have the trend moved to human body side.

Guide runner includes back plate and the slide plate for being connected to back plate front surface, is equipped on slide plate and connects with strip groove slot bottom The elastic construction one of touching, is equipped with the elastic construction two that contacts with the cell wall of strip groove on slide plate, in U-shaped resilient locking element Portion sticks on back plate rear surface.

The elastic construction one of design may insure that U-shaped resilient locking element is contacted with guide runner always.

The elastic construction two of design can provide backrest by elastic buffer of the left and right after twisted and rebound.

Elastic construction one includes the cantilevered elastic slice that slide plate upper and lower ends are arranged in, in the free end of every piece of cantilevered elastic slice One side close to strip groove is equipped with lug boss, and lug boss is contacted with the slot bottom of strip groove.Two pieces of cantilevered elastic slices are in symmetrical Setting.Cantilevered elastic slice its may insure the elastic property of upper and lower side.

Back plate upper and lower ends are respectively equipped with and the one-to-one resigning breach of cantilevered elastic slice.

The resigning breach of design, the resigning after may insure cantilevered elastic slice elastic deformation.

The elastic construction two includes the raised line being arranged on slide plate two sides, is respectively equipped at the both ends of every raised line Cantilever type elastic portion, cantilever type elastic portion are contacted with the slot bottom of strip groove.Back plate is located between two pieces of raised lines.

It not only increases structural strength to raised line, but also the fixed stability of back plate can be improved.

The waist-shaped hole there are two and be parallel to each other, slide plate close to human body set on one side there are two recessing groove and slide plate is set There is the one side of recessing groove to form four to contact with the slot bottom of strip groove, the recessing groove and waist-shaped hole correspond.

Its stability that lift adjustment can be improved of the structure, avoids mutual circumferentially rotate.

The back rest supports column includes the ontology that rear side has locating recesses slot, and the notch of locating recesses slot is sealed The cover board closed forms above-mentioned matching hole between the ontology and cover board.Its is easy to disassemble for the structure.The periphery of cover board is equipped with Several buckles are equipped with several bayonets being caught in one by one for the buckle on the cell wall of locating recesses slot.

The headrest assemblies include mounting body, equipped with the rectangle hole body being vertically arranged in mounting body, and under End inserts in the back cushion pillar in the rectangle hole body, is equipped between back cushion pillar and mounting body described by advance expenditure for adjusting Column passes through the elastic connection made of rubber material in the upper end of back cushion pillar with respect to the position adjustment structure of rectangle hole body position Component is connected with head by frame, and elastic connecting element is tilted upward or is horizontally disposed with to human body side, under back cushion pillar The position-limit mechanism for preventing the back cushion pillar to be upwardly separated from is equipped between end and mounting body.

The position adjustment structure of design can expand using crowd's range.The elastic connecting element of design, can be real Now left and right and inclination backward can further enrich the use function of swivel chair and further promote practicability.The limit of design Mechanism, may insure using reliability.

The back cushion pillar upper end is equipped with locating notch one, is equipped in one end of elastic connecting element and is stuck in the positioning Cooperation protrusion one in notch one is equipped with locating notch two by the downside of frame on head, sets in the other end of elastic connecting element There is the cooperation protrusion two being stuck in the locating notch two, fastening knot is equipped between the cooperation protrusion one and locating notch one Structure one is equipped with fastening structure two between cooperation protrusion two and locating notch two.Using above-mentioned structure, structure can be improved The stability of intensity and connection cooperation fixation, at the same time it can also easy to disassemble.

The fastening structure one includes the positioning tube one being arranged in locating notch one, in one end of elastic connecting element Equipped with the location hole one being inserted into for the positioning tube one, be equipped in location hole one insert in the positioning tube one and with it is fixed The fastener one of position one inner thread of cylinder connection.

The fastening structure two includes the positioning tube two being arranged in locating notch two, in the another of elastic connecting element End is equipped with the location hole two being inserted into for the positioning tube two, be equipped in location hole two insert in the positioning tube two and with The fastener two of two inner thread of positioning tube connection.

The elastic connecting element circumferential direction upper surface is equipped with the setting of several intervals and both ends extend to elastic joint part The U-lag body of part circumferential direction two sides.U-lag body is relief groove, can form the stress dispersion of itself.

The position adjustment structure includes that back cushion pillar is arranged in close to human body one side and in several tune of discrete arrangement Mating groove is saved, is equipped with the inverted U-shape slot being connected to the rectangle hole body close to the one side of human body in mounting body, and be inverted U Cantilevered buckle is formed in shape slot, the cantilevered is fastened on any one and adjusts in mating groove.The structure its just In adjusting and fix.

Rectangular opening body opening wall is equipped with several bar shaped guide protrusions being axially arranged along rectangle hole body.

Bar shaped guide protrusions which reduce the contact area of rectangle hole body and back cushion pillar, can be further improved dismounting and The ride comfort of lift adjustment.

The position-limit mechanism includes the cantilevered limited block that back cushion lower rod end is arranged in, cantilevered limited block it is hanging End is contacted with the lower end surface of mounting body can prevent the back cushion pillar to be upwardly separated from.Cantilevered limited block is arc cantilevered limit Position block.

Cantilevered limited block itself has certain elastic property, can play buffering when limit.

The mounting body lower end is equipped with the spacing breach being connected to the rectangle hole body, when cantilevered limited block Free end, which is stuck in the spacing breach, can prevent the back cushion pillar to be upwardly separated from.

The handrail includes the tubular column being fixed in fixed seat frame, and the handrail inserted in the tubular column is fixed Column is equipped with balustrade panel in the upper end of handrail fixed column, and the tubular column is tilted towards preceding setting, inclines on front side of the inner wall of tubular column Inclined-plane is equipped with along tubular axis of a cylinder to the ratchet of setting, passes through stud connection in one end that handrail fixed column inserts in tubular column There is pawl and pawl and ratchet engagement.

Using the structure for being obliquely installed collaboration pawl and ratchet, pawl voluntarily inserted in the case where self weight on ratchet and with Ratchet engagement, realizes the stability of structure and the convenience of lift adjustment and controllability, and design more rationally and meets The development trend of current social technology.It is not necessarily to disassembly to above-mentioned structure, can further prolong the service life.

Inner cylinder is equipped in the tubular column, the ratchet is arranged on the front side inclined surface of inner cylinder inner wall, and handrail is solid Fixed column inserts in inner cylinder and is equipped with oriented structure between handrail fixed column and inner cylinder.The design of inner cylinder, can be in order to Assembling.

The oriented structure of design can be further improved the stability and ride comfort of lift adjustment.

The handrail fixed column lower end is equipped with pawl mounting groove, and the both ends of hinged shaft are threaded through the cell wall of pawl mounting groove On, the pawl is located in pawl mounting groove, is equipped between pawl and pawl mounting groove for when pawl is detached from spine backward The swing position limiting structure for preventing the pawl from excessively swinging backward after tooth.

The mounting groove of design can form maximally utilizing for protection and space.

The swing position limiting structure of design, may insure using reliability.

The swing position limiting structure includes the position limit arm that one end is connect with pawl, is set in position limit arm far from one end of pawl There is limit pin, arc groove is equipped on the cell wall of pawl mounting groove, the inner end for limiting pin inserts in the arc groove It is interior.

That is, limiting pin, it can be moved along arc groove, two for playing the role of guiding and limit.

The oriented structure includes the guide groove being arranged on rear side of inner cylinder, is equipped with card in the rear side of handrail fixed column Guiding convex ribs in the guide groove and with guide groove clearance fit.Connect that is, the cell wall of guiding convex ribs and guide groove slides It connects.

The guide groove upper end extends to the upper end of inner cylinder and is in communication with the outside, and the lower end of guide groove extends to inner cylinder Lower end.The tubular column is equipped with the connectivity slot being connected to the guide groove.

The upper end of the connectivity slot extends to the upper end of tubular column and is in communication with the outside, and the lower end of connectivity slot extends to tubular The lower end of column.Inner cylinder is fastened by two pieces of C-shaped halfbodies of transversal cross-section and is formed.The ratchet of its inside easy to process of the structure, with And subsequent assembling.

Oriented structure further includes the interior protuberance being arranged on inner cylinder inner wall, the back side edge of interior protuberance and the inner wall of inner cylinder There are gaps for back side edge, are equipped with the guiding notch being caught in for the interior protuberance in the outer wall of handrail fixed column.The structure its can To further increase mobile regularity and stability.The upper end of handrail fixed column is equipped with blind hole body.

Balustrade panel includes that the closed bottom plate of blind hole body orifice is equipped with handrail lower case and is fastened on bottom plate Handrail upper housing in handrail lower case.The both ends of handrail lower case are equipped with the connection that upper end is threadedly coupled with handrail upper housing Bolt.Its connection easy to disassemble of the structure.

Two cantilevers in fixed seat frame, are connected with seat cushion between two cantilevers, the seat cushion include swing substrate and It is swung up and down before and after buttocks seat board and swing substrate, there is the space accommodated for the swing substrate and pendulum inside buttocks seat board Dynamic substrate is located in the space, and the two sides front end and fixed seat frame for swinging substrate are articulated and connected, the two sides front end of buttocks seat board With fixed seat frame articulated connection, the rear end sides for swinging substrate are respectively equipped with limitation pin, in every cantilever close to fixed seat frame One end on the inside of be respectively equipped with the waist-shaped hole one being inserted into one by one for the limitation pin, in the two sides rear end of buttocks seat board difference Equipped with the waist-shaped hole two being inserted into one by one for the limitation pin, this seat cushion further includes the front stall for being fixed on two cantilever free ends Plate is equipped with elastic connection structure swinging between substrate and fore beam.Using it is preceding hinged and after can be in the swing of vertical direction Structure may be implemented seat cushion in the swing of vertical direction, enrich using function.It, can be real using elastic connection structure The mutual alignment variation of existing buttocks seat board and fore beam, that is, be more in line with ergonomic designs and comfort is more preferable, more Meet the use demand of current people.

Elastic connection structure includes being connected to several elastic cantilever blocks for swinging substrate front end, in every piece of elastic cantilever block Uprighting spring is equipped between lower surface and fore beam.It cooperates with uprighting spring to elastic cantilever block, not only may insure junction Elastic property, and may also be ensured that the structural strength of junction.

Portion's seat board is equipped with the buttocks panel being located above the swing substrate, and shape between buttocks seat board and buttocks panel At cavity one, formation cavity two between front panel and fore beam and front panel is connected on fore beam, elastic cantilever block hangs Dead end stretches in cavity two.

It is internal with taper chamber for buttocks seat board, and the upper end closed of taper chamber, the two are passed through several by buttocks panel Fastener one connects.Fore beam upper surface is equipped with the reinforcing rib body of several vertical and horizontal setting.

It swings substrate front end two sides and is respectively equipped with swivel pin, be respectively equipped in the front end two sides of buttocks seat board for the hinge The through-hole one that outbound is inserted into one by one is respectively equipped with the through-hole being inserted into one by one for the swivel pin in the free end of every cantilever Two, the swivel pin is inserted into through-hole two from through-hole one.The structure its may insure hinged stability.

Compared with prior art, it is the advantages of this swivel chair:

1, adjustment hole and U-shaped resilient locking element are designed, when needing to carry out lift adjustment, U-shaped resilient locking element exists at this time One end in adjustment hole is inserted under the adjusting of external force and is detached from adjustment hole, discharges external force at this time behind lifting to setting position and is forced The corresponding one end of U-shaped resilient locking element simultaneously inserts in adjustment hole, reaches the height adjustment of backrest height.

2, the adjusting guiding mechanism designed, can be further improved the regularity and stability of lift adjustment.

3, the flexible connection mechanism designed may be implemented individually tilting backwards close to neck location, further enrich Using function and improve practicability.

Detailed description of the invention

Fig. 1 is revolving chair structure schematic diagram provided by the utility model.

Fig. 2 is swivel chair schematic cross-sectional view provided by the utility model.

Fig. 3 is enlarged structure schematic diagram at A in Fig. 2.

Fig. 4 is structural schematic diagram provided by the utility model.

Fig. 5 is the local explosion structure diagram of Fig. 4.

Fig. 6 is guide runner configuration schematic diagram provided by the utility model.

Fig. 7 is enlarged structure schematic diagram at B in Fig. 2.

Fig. 8 is flexible connection mechanism configuration schematic diagram provided by the utility model.

Fig. 9 is headrest assemblies structural schematic diagram provided by the utility model.

Figure 10 is the structural schematic diagram after headrest assemblies pull-off provided by the utility model.

Figure 11 is headrest assemblies configuration schematic diagram provided by the utility model.

Figure 12 is armrest schematic diagram provided by the utility model.

Figure 13 is handrail configuration schematic diagram provided by the utility model.

Figure 14 is concave-convex fit structure schematic diagram provided by the utility model.

Figure 15 is inner tube structure schematic diagram provided by the utility model.

Figure 16 is seat cushion configuration schematic diagram provided by the utility model.

Figure 17 is cushion structure schematic diagram provided by the utility model.

Specific embodiment

It is the specific embodiment of utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

As shown in Figs. 1-2, this swivel chair includes ratchet wheel component 10 and the lifting device 20 that is connected on ratchet wheel component 10, is being risen It is connected with fixed seat frame a1 on falling unit 20, is connected with handrail in the two sides of fixed seat frame a1, connects on rear side of fixed seat frame a1 It is connected to backrest module, specifically, the backrest module of the present embodiment includes rectangular backrest frame a6, the back side top side of rectangular backrest frame a6 It is connected with support frame by triangle part a7, is also connected with neck support on triangle part a7.

Support frame includes fixed seat frame a1 and the fixed column a2 that is connected on fixed seat frame a1 rear side, the transverse direction of fixed column a2 Rectangular in cross-section.

As shown in Figs 1-4, further include back rest supports column a3, be equipped with matching hole a31 in the lower end of back rest supports column a3 and consolidate Fixed column a2 is inserted in the matching hole a31, and specifically, the back rest supports column a3 of the present embodiment includes that rear side has locating recesses The ontology a33 of slot a331, and by the closed cover board a34 of the notch of locating recesses slot a331, the ontology a33 and cover board Above-mentioned matching hole a31 is formed between a34.

Several adjustment hole a32 being arranged along matching hole a31 axially spaced-apart are equipped on the hole wall of matching hole a31, solid One end that one end that fixed column a2 is inserted in matching hole a31 is equipped with U-shaped resilient locking element a4 and U-shaped resilient locking element a4, which inserts in, appoints It anticipates in an adjustment hole a32, is equipped with to adjust between one end that fixed column a2 is inserted in matching hole a31 and back rest supports column a3 and lead To mechanism.

Specifically, the adjusting guiding mechanism of the present embodiment include be located at adjustment hole a32 in and with fixed column a2 vertical sliding The guide runner a5 of connection is equipped at least one waist-shaped hole a21 on fixed column a2, at least one is fixed on guide runner a5 The guide pin a51 that root runs through the waist-shaped hole a21 and connect with back rest supports column a3.Prioritization scheme, the waist-shaped hole of the present embodiment There are two a21 and is parallel to each other,

And guide pin a51 also has two and is inserted in the waist-shaped hole a21 one by one.

As shown in figures 1 to 6, it is equipped with strip groove a22 at the back side fixed column a2, guide runner a5 is located in strip groove a22 And the two sides of guide runner a5 and the cell wall of strip groove a22 are slidably connected, and stick on guiding in the middle part of U-shaped resilient locking element a4 One side of the sliding block a5 far from strip groove a22 slot bottom.That is, setting on fixed column a2, there are two be located between two waist-shaped hole a21 Lock piece be inserted into hole, underlying lock piece insertion hole is blind hole, and the lock piece insertion hole being located above is through-hole, U-shaped The lower end of resilient locking element a4 inserts in blind hole, and the upper end of U-shaped resilient locking element a4 through through-hole and stretches to any one In adjustment hole a32.

When needing to adjust height, forcing U-shaped resilient locking element a4 by external force at this time, deformation occurs to be detached from originally Adjustment hole a32 discharge external force at this time when the relatively fixed column a2 of back rest supports column a3 is moved to required position, and U-shaped Resilient locking element a4, which then resets, to be inserted in corresponding adjustment hole a32.When back rest supports column a3 lifting, guide runner a5 at this time Also synchronization lifting, it is ensured that the regularity and stability of lifting moving.

Specifically, the guide runner a5 of the present embodiment includes back plate a52 and the slide plate a53 for being connected to back plate a52 front surface, Two connecting pins are equipped between back plate a52 and slide plate a53.

The elastic construction one contacted with strip groove a22 slot bottom, specifically, the institute of the present embodiment are equipped on slide plate a53 The elastic construction one stated includes that the cantilevered elastic slice a54 of slide plate a53 upper and lower ends is arranged in, every piece of cantilevered elastic slice a54's Free end is equipped with lug boss a55 close to the one side of strip groove a22, and lug boss a55 is contacted with the slot bottom of strip groove a22.Two Block cantilevered elastic slice a54 is symmetrical set.

It is allowed correspondingly secondly, being respectively equipped in the back plate a52 upper and lower ends with the cantilevered elastic slice a54 Position notch a521.

The elastic construction two contacted with the cell wall of strip groove a22 is equipped on slide plate a53, U-shaped resilient locking element a4's Middle part sticks on back plate a52 rear surface.Specifically, the elastic construction two of the present embodiment includes being arranged on the two sides slide plate a53 Raised line a56, be respectively equipped with cantilever type elastic portion a57 at the both ends of every raised line a56, cantilever type elastic portion a57 and bar shaped are recessed The slot bottom of slot a22 contacts.Back plate a52 is located between two pieces of raised line a56.

In addition, in slide plate a53 close to human body when setting there are two recessing groove and slide plate a53 is equipped with the while shape of recessing groove Cheng Sigen is contacted with the slot bottom of strip groove a22, and the recessing groove and waist-shaped hole a21 are corresponded.Recessing groove which reduce Contact area is so as to improving the ride comfort of relative motion.

In addition, the matching hole a31 of the present embodiment is rectangular opening, the fixed column a2 inserts in one end in matching hole a31 Transversal cross-section is in rectangle and the rectangular opening matches.

As shown in Fig. 1-2 and Fig. 7-8, the upper end of back rest supports column a3 is connected by flexible connection mechanism a8 and triangle part a7 It connects.Specifically, the flexible connection mechanism a8 of the present embodiment includes the column connector a81 made of rubber material, and setting is being leaned on The lower locating notch a35 of the back support upper end column a3 and close human body side is equipped with upper locating notch in the corner of triangle part a7 A71, the lower end of column connector a81 insert in lower locating notch a35 and column connector a81 and lower locating notch a35 it Between be equipped with lower fixed connection structure, the upper end of column connector a81 inserts in locating notch a71 and in column connector a81 It is equipped with upper fixed connection structure between upper locating notch a71, is equipped with close to the one side of human body along column in column connector a81 The positioning groove body a82 that shape connector a81 is axially arranged, and the elastomer block a83 being stuck in the positioning groove body a82, it is described Elastomer block a83 is processed by sheet metal.

The upper end of elastomer block a83 is stuck in the upper locating notch a71 and the locking by running through column connector a81 Tight part a84 is fixed on triangle part a7, and the lower end of elastomer block a83 is stuck in the lower locating notch a35 and by through column The lower locking member a85 of shape connector a81 is fixed on the upper end back rest supports column a3.

The positioning groove body a82 lower end slot bottom is equipped with the bottom incline a821 tilted backwards being arranged downward, in elastomer block The lower end of a83 is equipped with the lower inclination matching surface a831 to match with the bottom incline a821.

The positioning upper end groove body a82 has inclination forward towards the top incline a822 of upper setting, elastomer block a83's Upper end is equipped with the upper inclination matching surface a832 to match with the top incline a822.The bottom incline a821 and updip Inclined-plane a822 is parallel to each other.

The elastomer block a83 inserts in one end in lower locating notch equipped with lower limit step；It is inserted in elastomer block a83 One end in locating notch is equipped with upper limit step.

Rear side outer wall is equipped with several spaced U-shaped relief groove a833 up and down in the middle part of elastomer block a83.

Upper fixed connection structure includes positioning tube a72 in at least one being arranged in upper locating notch, in elastomer block a83 Upper end on rear side of be equipped with the upper fixation hole a86 being inserted into one by one for the upper positioning tube.Lower fixed connection structure includes that setting exists Positioning tube a36 under at least one in lower locating notch is equipped on rear side of the lower end of elastomer block a83 and supplies the lower positioning tube one The lower fixed hole a87 of one insertion.

As shown in figs. 9-11, headrest assemblies are connected at the top of rectangular backrest frame a6, the headrest assemblies include installation Pedestal b1 is equipped in the lower end mounting body b1 to the extended installation protrusion b14 in human body side for the ease of dismounting, convex installing Portion is equipped with several mounting-positioning holes b15.

It is equipped with the rectangle hole body b11 being vertically arranged on mounting body b1 and lower end inserts in the rectangle hole body b11 Back cushion pillar b2, the transversal cross-section of back cushion pillar b2 matches in rectangle and with the rectangle hole body b11.

Secondly, being equipped with several bar shaped guide protrusions being axially arranged along rectangle hole body b11 on rectangle hole body b11 hole wall b13.Back cushion pillar b2 is contacted with bar shaped guide protrusions b13.Upper limit raised line b25 is equipped in the upper end of back cushion pillar b2.

It is equipped between back cushion pillar b2 and mounting body b1 for adjusting the back cushion pillar b2 with respect to rectangle hole body b11 The position adjustment structure of position, specifically, which close to human body one side and is in back cushion pillar b2 including setting Several adjusting mating groove b24 of discrete arrangement are equipped with and the rectangle hole body b11 in mounting body b1 close to the one side of human body The inverted U-shape slot b12 of connection, and form cantilevered in inverted U-shape slot b12 and buckle b131, the cantilevered buckle b131 button It closes and is adjusted on mating groove b24 at any one.

Head is connected with the elastic connecting element b3 made of rubber material in the upper end of back cushion pillar b2 and depends on frame b4, Elastic connecting element b3 is tilted upward or is horizontally disposed with to human body side, the lower end of back cushion pillar b2 and mounting body b1 it Between be equipped with position-limit mechanism for preventing the back cushion pillar b2 to be upwardly separated from.Specifically, position-limit mechanism includes that setting is being leaned on The cantilevered limited block b20 of the lower end advance expenditure column b2, the lower end surface of the free end and mounting body b1 of cantilevered limited block b20 connect Touching can prevent back cushion pillar b2 to be upwardly separated from.

The lower end mounting body b1 is equipped with the spacing breach b10 being connected to the rectangle hole body b11, works as cantilevered The free end of limited block b20, which is stuck in the spacing breach b10, can prevent back cushion pillar b2 to be upwardly separated from.

In addition, being equipped with one b21 of locating notch in the back cushion upper end pillar b2, it is equipped with and is stuck in one end of elastic connecting element b3 One b22 of cooperation protrusion in one b21 of locating notch is equipped with two b41 of locating notch by the downside of frame b4 on head, in elasticity The other end of connecting component b3 is equipped with two b31 of cooperation protrusion being stuck in two b41 of locating notch, the cooperation protrusion one It is equipped with fastening structure one between one b21 of b22 and locating notch, is equipped between cooperation two b31 of protrusion and two b41 of locating notch tight Fixing structure two.Further, fastening structure one includes one b23 of positioning tube being arranged in one b21 of locating notch, in elastic connection One end of component b3 is equipped with one b32 of location hole being inserted into for one b23 of positioning tube, is equipped in one b32 of location hole slotting In one b33 of fastener being connect in one b23 of positioning tube and with one b23 inner thread of positioning tube.Further, fastening structure Two include two b42 of positioning tube being arranged in two b41 of locating notch, is equipped in the other end of elastic connecting element b3 for described Two b34 of location hole of two b42 of positioning tube insertion, be equipped in two b34 of location hole insert in two b42 of positioning tube and with it is fixed Two b35 of fastener of position two b42 inner thread of cylinder connection.

In addition, being equipped on elastic connecting element b3 circumferential direction upper surface, several intervals are arranged and both ends extend to elastic connection The U-lag body b36 of component b3 circumferential direction two sides.U-lag body b36 is relief groove.

Cantilevered buckle b131 is stuck on one of adjusting mating groove b24, when the adjustment for needing to carry out height and position When, back cushion pillar b2 moves along its axis that cantilevered buckle b131 is forced to be detached from adjusting mating groove under the effect of external force B24, when being moved to setting position, cantilevered buckle b131 is stuck on the adjusting mating groove b24 of corresponding position.

As shown in figs. 12-15, handrail includes the tubular column c1 being fixed on fixed seat frame a1, and inserts in the tubular column Handrail fixed column c2 in c1 is equipped with balustrade panel c3 in the upper end of handrail fixed column c2, further, handrail fixed column c2's Upper end is equipped with blind hole body.

The balustrade panel c3 of the present embodiment includes being equipped with the closed bottom plate c31 of the blind hole body orifice on bottom plate c31 The handrail lower case c32 and handrail upper housing c33 being fastened on handrail lower case c32.In the two sides inner wall of handrail lower case c32 Equipped with concaveconvex structure 1, the bumps to match with the concaveconvex structure one are equipped in the two sides inner wall of handrail upper housing c33 Structure 2 35.Specifically, the concaveconvex structure one of the present embodiment includes several spaced protrusions, and the concaveconvex structure two wraps Several spaced recesses are included, the protrusion matches with recess.Secondly, being equipped at the both ends of handrail lower case c32 The connection bolt that upper end is threadedly coupled with handrail upper housing c33.

The tubular column c1 of prioritization scheme, the present embodiment is tilted towards preceding setting, the inclined surface c11 on front side of the inner wall of tubular column c1 It is equipped with the ratchet c12 being axially arranged along tubular column c1, passes through hinge in one end that handrail fixed column c2 is inserted in tubular column c1 Axis c4 is connected with pawl c5 and pawl c5 is engaged with ratchet c12.Pawl c5 is engaged with ratchet c12, is formed and is fixed.

Secondly, being equipped with inner cylinder c6 in tubular column c1, the front side inclined surface of inner cylinder c6 inner wall is arranged in the ratchet c12 On c11, handrail fixed column c2 is inserted in inner cylinder c6 and is equipped with oriented structure between handrail fixed column c2 and inner cylinder c6.

In addition, being equipped with pawl mounting groove c21 in the handrail lower end fixed column c2, the both ends of hinged shaft c4 are threaded through pawl mounting groove On the cell wall of c21, the pawl c5 is located in pawl mounting groove c21, is equipped with and uses between pawl c5 and pawl mounting groove c21 In the swing position limiting structure for preventing the pawl c5 from excessively swinging backward after pawl c5 is detached from ratchet c12 backward.Specifically, the pendulum Dynamic position limiting structure includes the position limit arm c51 that one end is connect with pawl c5, is equipped with limit far from one end of pawl c5 in position limit arm c51 Pin c52, is equipped with arc groove c22 on the cell wall of pawl mounting groove c21, and the inner end of limit pin c52 inserts in the arc In connected in star c22.

Specifically, the oriented structure of the present embodiment includes the guide groove c61 being arranged on rear side of inner cylinder c6, solid in handrail The rear side of fixed column c2 is equipped in the guide groove c61 described in being stuck in and the guiding convex ribs c23 with guide groove c61 clearance fit.Secondly, The oriented structure further includes the interior protuberance c64 being arranged on inner cylinder inner wall, the back side edge of interior protuberance c64 and the inner wall of inner cylinder There are gaps by back side edge c65, are equipped with the guiding notch c24 being caught in for the interior protuberance c64 in the outer wall of handrail fixed column c2.

In addition, the upper end guide groove c61 extends to the upper end of inner cylinder c6 and is in communication with the outside, the lower end of guide groove c61 extends To the lower end of inner cylinder c6.

The tubular column c1 is equipped with the connectivity slot c13 being connected to the guide groove c61.

The upper end of connectivity slot c13 extends to the upper end of tubular column c1 and is in communication with the outside, and the lower end of connectivity slot c13 extends to The lower end of tubular column c1.The inner cylinder c6 is fastened by two pieces of C-shaped halfbodies of transversal cross-section and is formed.The lower end inner cylinder c6 With closure c62, the lock that upper end is threadedly coupled with closure c62 is equipped with the junction of tubular column c1 in fixed seat frame a1 Bolt c63.

In the present embodiment, it gets a grip on the rail plate under external force or handrail fixed column c2 is twitched upwards, spine at this time Pawl c5 is detached from ratchet c12, and after rising to setting position, pawl c5 at this time is engaged under self gravitation effect with ratchet c12, It is adjusted that is, completing to rise.Conversely, then completing the adjusting of decline.

As shown in figs. 16-17, two cantilever a100 on fixed seat frame a1, are connected with seat between two cantilever a100 Pad, the seat cushion include swinging substrate d1 and buttocks seat board d2 and swinging the front and back substrate d1 to swing up and down, and swing substrate d1 and are fixed on On lifting device, lifting device is the prior art, is fixed on caster bracket.

Have inside buttocks seat board d2 for the space accommodated the swing substrate d1 and swing substrate d1 is located at the sky In, swing two sides front end and fixed seat frame a1 articulated connection, the two sides front end of buttocks seat board d2 and the fixed seat frame of substrate d1 A1 articulated connection is specifically respectively equipped with swivel pin d14 swinging the front end substrate d1 two sides, in the front end two of buttocks seat board d2 Side is respectively equipped with one d23 of through-hole being inserted into one by one for the swivel pin d14, is respectively equipped in the free end of every cantilever a100 Through-hole two is inserted into from one d23 of through-hole for through-hole two a102, the swivel pin d14 that the swivel pin d14 is inserted into one by one In a102.

The rear end sides for swinging substrate d1 are respectively equipped with limitation pin d3, in every cantilever a100 close to fixed seat frame a1's One a101 of waist-shaped hole being inserted into one by one for the limitation pin d3 is respectively equipped on the inside of one end, behind the two sides of buttocks seat board d2 End is respectively equipped with two d21 of waist-shaped hole being inserted into one by one for the limitation pin d3, this seat cushion further includes being fixed on two cantilevers The fore beam d4 of a100 free end is equipped with elastic connection structure swinging between substrate d1 and fore beam d4.

Specifically, the elastic connection structure of the present embodiment includes being connected to several elastic cantilever blocks for swinging the front end substrate d1 D11 is equipped with uprighting spring d12 between the lower surface and fore beam d4 of every piece of elastic cantilever block d11.

Secondly, being equipped with positioning one d13 of cylinder, the upper end cap of uprighting spring d12 in elastic cantilever block d11 free end lower surface On positioning one d13 of cylinder and upper end end acts on elastic cantilever block d11 free end lower surface.In the upper surface buttocks seat board d2 Equipped with two d22 of cylinder is positioned correspondingly with one d13 of positioning cylinder, end cap is in positioning cylinder under uprighting spring d12 On two d22 and lower end acts on the upper surface buttocks seat board d2.

The buttocks panel d5 being located above the swing substrate d1, and buttocks seat board d2 and stern are equipped on buttocks seat board d2 Cavity one is formed between portion panel d5, is connected between front panel d6 and fore beam d4 and front panel d6 and is formed on fore beam d4 The free end of cavity two, elastic cantilever block d11 stretches in cavity two.It is equipped with arc-shaped concave one in the buttocks upper surface panel d5, The upper surface plate d6 is equipped with arc-shaped concave two, the arc-shaped concave one and arc-shaped concave dimorphism camber concave surface in front.

The swing substrate d1 of the present embodiment is made of sheet metal, the elastic cantilever block d11 and swing substrate d1 mono- It is body formed.

Reinforce protrusion d110 in addition, being equipped in the elastic cantilever upper surface block d11, is set in the lower surface of elastic cantilever block d11 There is recess corresponding with the reinforcement protrusion d110.The buttocks seat board d2 and fore beam d4 is made of plastics respectively.

In the present embodiment, when people sit on cushion when, at this time seat cushion by gravity and buttocks seat board d2 then occurs downwards Movement, and use elastic connection structure, can play fore beam d4 and buttocks seat board d2 subregion movement, design more adduction It manages and comfort is more preferable.

Claims (10)

1. swivel chair, including ratchet wheel component (10) and the lifting device (20) being connected on ratchet wheel component (10), in lifting device (20) it is connected with fixed seat frame (a1) on, handrail is connected in the two sides of fixed seat frame (a1), in the rear side of fixed seat frame (a1) It is connected with backrest module, which is characterized in that the backrest module includes rectangular backrest frame (a6), the back of rectangular backrest frame (a6) Face top side is connected with support frame by triangle part (a7), which includes fixed seat frame (a1) and be connected to fixed seat frame (a1) Fixed column (a2) on rear side further includes back rest supports column (a3), is equipped with matching hole (a31) in the lower end of back rest supports column (a3) And fixed column (a2) inserts in the matching hole (a31), is equipped on the hole wall of matching hole (a31) several along matching hole (a31) adjustment hole (a32) of axially spaced-apart setting, is equipped with U-shaped bullet in one end that fixed column (a2) inserts in matching hole (a31) Property lock piece (a4) and one end of U-shaped resilient locking element (a4) insert in any one adjustment hole (a32), inserted at fixed column (a2) Between one end in matching hole (a31) and back rest supports column (a3) be equipped with adjust guiding mechanism, back rest supports column (a3) it is upper End is connect by flexible connection mechanism (a8) with triangle part (a7), is connected with headrest assemblies at the top of rectangular backrest frame (a6).

2. swivel chair according to claim 1, which is characterized in that the flexible connection mechanism (a8) includes by rubber material Manufactured column connector (a81) is arranged in the back rest supports column upper end (a3) and close to the lower locating notch of human body side (a35), it is equipped with upper locating notch (a71) in the corner of triangle part (a7), the lower end of column connector (a81) inserts in lower positioning Lower fixed connection structure is equipped in notch (a35) and between column connector (a81) and lower locating notch (a35), column connects The upper end of fitting (a81) inserts in locating notch (a71) and between column connector (a81) and upper locating notch (a71) Equipped with upper fixed connection structure, it is equipped with along column connector (a81) axially at column connector (a81) close to the one side of human body The positioning groove body (a82) of setting, and be stuck in it is described positioning groove body (a82) in elastomer block (a83), elastomer block (a83) it is upper End is stuck in the upper locating notch (a71) and is fixed on three by the upper locking member (a84) through column connector (a81) On corner fittings (a7), the lower end of elastomer block (a83) is stuck in the lower locating notch (a35) and by through column connector (a81) lower locking member (a85) is fixed on the upper end back rest supports column (a3).

3. swivel chair according to claim 1, which is characterized in that the adjusting guiding mechanism includes being located at adjustment hole (a32) guide runner (a5) connecting in and with fixed column (a2) vertical sliding is equipped at least one waist on fixed column (a2) Type hole (a21), be fixed on guide runner (a5) at least one through the waist-shaped hole (a21) and with back rest supports column (a3) The guide pin (a51) of connection is equipped with strip groove (a22) at the fixed column back side (a2), and guide runner (a5) is located at strip groove (a22) in and the two sides of guide runner (a5) and the cell wall of strip groove (a22) are slidably connected, U-shaped resilient locking element (a4) Middle part sticks on the one side of guide runner (a5) far from strip groove (a22) slot bottom.

4. swivel chair according to claim 1, which is characterized in that the headrest assemblies include mounting body (b1), are being pacified Dress pedestal (b1) inserts in the back cushion in the rectangle hole body (b11) equipped with the rectangle hole body (b11) and lower end being vertically arranged Pillar (b2) is equipped with for adjusting the back cushion pillar (b2) with respect to rectangle between back cushion pillar (b2) and mounting body (b1) The position adjustment structure of the position hole body (b11) passes through the elastic connection made of rubber material in the upper end of back cushion pillar (b2) Component (b3) is connected with head by frame (b4), and the side elastic connecting element (b3) Xiang Renti tilts upward or is horizontally disposed with, It is equipped between the lower end and mounting body (b1) of back cushion pillar (b2) for preventing the back cushion pillar (b2) to be upwardly separated from Position-limit mechanism.

5. swivel chair according to claim 4, which is characterized in that the back cushion pillar upper end (b2) is equipped with locating notch one (b21), the cooperation protrusion one (b22) being stuck in the locating notch one (b21) is equipped in one end of elastic connecting element (b3), It is equipped with locating notch two (b41) by the downside of frame (b4) on head, is equipped in the other end of elastic connecting element (b3) and is stuck in institute State the cooperation protrusion two (b31) in locating notch two (b41), the cooperation protrusion one (b22) and locating notch one (b21) it Between be equipped with fastening structure one, equipped with fastening structure two between cooperation protrusion two (b31) and locating notch two (b41).

6. swivel chair according to claim 1, which is characterized in that the handrail includes being fixed on fixed seat frame (a1) Tubular column (c1), and the handrail fixed column (c2) in the tubular column (c1) is inserted in, it is set in the upper end of handrail fixed column (c2) Have balustrade panel (c3), the tubular column (c1) is tilted towards preceding setting, on the inner wall front side inclined surface (c11) of tubular column (c1) Equipped with the ratchet (c12) being axially arranged along tubular column (c1), one end in tubular column (c1) is inserted in handrail fixed column (c2) Pawl (c5) is connected with by hinged shaft (c4) and pawl (c5) is engaged with ratchet (c12).

7. swivel chair according to claim 6, which is characterized in that it is equipped with inner cylinder (c6) in the tubular column (c1), it is described Ratchet (c12) be arranged on the front side inclined surface (c11) of inner cylinder (c6) inner wall, handrail fixed column (c2) inserts in inner cylinder (c6) And oriented structure is equipped between handrail fixed column (c2) and inner cylinder (c6).

8. swivel chair according to claim 1, which is characterized in that two cantilevers (a100) on fixed seat frame (a1), It is connected with seat cushion between two cantilevers (a100), which includes swinging substrate (d1) and buttocks seat board (d2) and swinging substrate (d1) front and back is swung up and down, and is had the space for swing substrate (d1) receiving inside buttocks seat board (d2) and is swung substrate (d1) it is located in the space, swings two sides front end and fixed seat frame (a1) articulated connection of substrate (d1), buttocks seat board (d2) Two sides front end and fixed seat frame (a1) articulated connection, the rear end sides for swinging substrate (d1) be respectively equipped with limitation pin (d3), It is respectively equipped on the inside of the one end of fixed seat frame (a1) at every cantilever (a100) and is inserted one by one for the limitation pin (d3) The waist-shaped hole one (a101) entered is respectively equipped in the two sides rear end of buttocks seat board (d2) and inserts one by one for the limitation pin (d3) The waist-shaped hole two (d21) entered, this seat cushion further include the fore beam (d4) for being fixed on two cantilever (a100) free ends, are swinging base Elastic connection structure is equipped between plate (d1) and fore beam (d4).

9. swivel chair according to claim 8, which is characterized in that the elastic connection structure includes being connected to swing substrate (d1) several elastic cantilever blocks (d11) of front end set between the lower surface and fore beam (d4) of every piece of elastic cantilever block (d11) There is uprighting spring (d12).

10. swivel chair according to claim 8, which is characterized in that the buttocks seat board (d2), which is equipped with, is located at the pendulum Buttocks panel (d5) above dynamic substrate (d1), and cavity one is formed between buttocks seat board (d2) and buttocks panel (d5), preceding Formation cavity two between front panel (d6) and fore beam (d4) and front panel (d6) is connected on seat board (d4)；The swing base The front end two sides plate (d1) are respectively equipped with swivel pin (d14), are respectively equipped in the front end two sides of buttocks seat board (d2) for the hinge The through-hole one (d23) that outbound (d14) is inserted into one by one is respectively equipped in the free end of every cantilever (a100) for the swivel pin (d14) through-hole two (a102) being inserted into one by one, the swivel pin (d14) are inserted into through-hole two (a102) from through-hole one (d23) It is interior.