CN112220263A - Office chair with adjustable pitching angle - Google Patents
Office chair with adjustable pitching angle Download PDFInfo
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- CN112220263A CN112220263A CN202011235913.3A CN202011235913A CN112220263A CN 112220263 A CN112220263 A CN 112220263A CN 202011235913 A CN202011235913 A CN 202011235913A CN 112220263 A CN112220263 A CN 112220263A
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- 230000008093 supporting effect Effects 0.000 claims abstract description 56
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- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 238000003466 welding Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical group [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 4
- 230000000284 resting effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
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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
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
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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
- A47C5/00—Chairs of special materials
- A47C5/04—Metal chairs, e.g. tubular
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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
-
- 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
- A47C7/002—Chair or stool bases
- A47C7/006—Chair or stool bases with castors
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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
- A47C7/36—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
- A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means
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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
- A47C7/54—Supports for the arms
- A47C7/541—Supports for the arms of adjustable type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chairs Characterized By Structure (AREA)
Abstract
An office chair with adjustable pitching angle comprises a backrest, at least two armrests, a chair seat and two connecting frames for connecting the backrest, the armrests and the chair seat, wherein the connecting frames are provided with a horizontal mounting rod, a first inclined mounting rod, a second inclined mounting rod and a supporting rod. The product has the advantages of simple structure, high stability, convenient manufacture, easy installation and the like.
Description
Technical Field
The invention relates to the technical field of office furniture, in particular to an office chair with an adjustable pitching angle.
Technical Field
Most of the current people are office workers, and most of the time of the people is that the people sit in front of a computer for working, so that a comfortable chair is necessary, a comfortable working environment can be provided for workers, the workers can be in a better state, and the higher working efficiency is stimulated. When sitting on the chair for a long time in the same posture, people can feel soreness of the waist and back, and the situation can be obviously improved if people can change the posture.
For example, CN201520949674.6 discloses a foldable reclining chair, which employs an armrest capable of being used to adjust the chair back, wherein the armrest includes an armrest body and an adjusting bayonet provided thereon, and the purpose of adjusting the chair back is achieved by the adjusting bayonet cooperating with a bolt on a leg of the chair. Chinese patent with application publication No. CN201220145956.7 and application publication No. 2013-01-02 discloses a high-foot folding deck chair with pedals for sauna, which comprises a deck chair backrest, deck chair armrests, a rotating shaft, an adjustable bayonet, a deck chair seat plate, deck chair front feet, folding pedals, connecting rods, pedal front feet, deck chair rear feet and a rotating shaft; the adjustable bayonet is fixed on the armrest, the position of the rotating shaft in the adjustable bayonet is adjusted, and the angle of the backrest of the reclining chair can be adjusted. The rotating shaft is the connecting rotating shaft of the backrest and the seat plate of the reclining chair and is provided with an accessory extending outwards. However, the deck chair has the following defects in the using process: under the condition of lying on back, the force that the chair leg received is very big, thereby leads to this article product not special stable, and this product is bamboo or wooden structure, and life is short, compressive capacity weak.
Chinese patent with application publication No. CN201821492142.4 and application publication date 2019-06-14 discloses a massage office chair with adjustable backrest for work, which comprises a supporting seat, wherein one end of the supporting seat is provided with a return bend, two ends of the supporting seat are both welded with spring seats, the spring seats are matched with supporting springs, a seat is placed on the upper portion of the supporting seat, two side positions of the upper portion of the supporting seat are detachably connected with armrest supports, a yielding groove is formed in the top of the armrest supports, a positioning rod is arranged in the yielding groove, one end position of the upper portion of the supporting seat is hinged with the backrest through a connecting shaft, the backrest is hinged with the armrest through a connecting shaft, a slot clamping frame is arranged on the lower portion of one end of the armrest, the slot clamping frame is matched with the yielding groove, a through groove is formed in the middle of the backrest, a guide frame is arranged on the rear portion of the backrest and two side positions corresponding. In the adjusting assembly, the clamping groove frame of the handrail is detachably connected with the handrail support, so that the handrail is not stable enough in the using process, and the clamping groove frame and the handrail are separated after the handrail is lifted, so that potential safety hazards are caused; the adjusting component has complex shape and great processing difficulty; in addition, in the using process, the hinged parts of the backrest, the armrests and the base of the chair are seriously abraded, and the service life of the chair is shortened.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an office chair with an adjustable pitching angle, so that the backrest of the office chair can be adjusted.
In order to achieve the purpose, the invention provides the following technical scheme:
an office chair capable of adjusting a pitching angle comprises a backrest, at least two armrests, a chair seat and two connecting frames for connecting the backrest, the armrests and the chair seat, wherein each connecting frame is provided with a horizontal mounting rod, a first inclined mounting rod, a second inclined mounting rod and a supporting rod; the backrest comprises at least two frame rods forming the backrest, and the frame rods are provided with angle support connecting parts at the lower ends of the frame rods and rotary connecting parts at the middle parts of the frame rods; the armrest is provided with an adjusting bayonet frame, a plurality of bayonets which can be matched with the clamping rod are arranged in the adjusting bayonet frame, and the armrest is also provided with a rotary mounting part which is matched with the rotary connecting part; the two side surfaces of the chair seat are respectively provided with a side installation part matched with the fixed installation part.
In the prior art, the existing adjustable pitch angle chair basically adopts an adjustable structure made of nonmetal, the service life of the chair is usually short, and the chair is easy to damage and poor in impact resistance when a human body is suddenly paralyzed and sat down; in addition, in the adjusting component of the adjustable seat, the clamping groove frame of the armrest is detachably connected with the armrest support, so that the seat is not stable enough in the using process, and after the armrest is lifted, the seat is separated from the armrest, so that potential safety hazards exist; generally, the shape of the adjusting component is complex, and the processing difficulty is high; in the using process, the angle support connecting part of the chair backrest and the angle support mounting part on the chair seat, the rotary connecting part and the rotary mounting parts on the armrests are seriously abraded, and the service life of the chair is shortened. In the technical scheme, the armrest and the armrest support which are made of metal materials are used for connecting the seat and the backrest, so that the chair is durable; the armrest support and the seat are fixedly connected by two screws, so that the armrest support and the seat are stable enough; the triangle-like handrail support, the handrail, the backrest frame and the like are simple in structure, can be manufactured only by adopting a welding process, a square tube bending process and the like, are also extremely simple to install, and can be used for fixing and connecting all components through a plurality of screws.
In the technical scheme, the transverse direction is a vertical plane where the horizontal installation rod, the first inclined installation rod, the second inclined installation rod and the support rod are located, and the clamping rod is fixed at one end, far away from the horizontal installation rod, of the first inclined installation rod and is perpendicular to the vertical plane; the transverse extension means that the clamping rod is vertical to the vertical plane, one end of the clamping rod is fixed in the end face, far away from the horizontal mounting rod, of the first inclined mounting rod, and the other end of the clamping rod is arranged on the outer side of the chair seat to support the adjusting bayonet frame.
Preferably, the horizontal installation rod, the first inclined installation rod, the second inclined installation rod, the supporting rod, the frame rod and the handrail are all made of metal materials, and the chair seat is made of wood, bamboo or other wood-plastic materials.
In this technical solution, the horizontal installation rod, the first inclined installation rod, the second inclined installation rod, the support rod, the frame rod and the handrail are made of metal, which increases the service life of the above components, and further preferably, the metal is made of stainless steel.
Preferably, the front end of the handrail is provided with an anti-slip sleeve coated on the handrail, and the surface of the anti-slip sleeve is uniformly provided with a convex structure.
Preferably, the first and second inclined mounting bars and the horizontal mounting bar are straight bars, which are connected by a bent connection portion disposed therebetween.
In the technical scheme, the first inclined mounting rod and the second inclined mounting rod are integrated with the horizontal mounting rod and the bending connecting part arranged between the horizontal mounting rod and the horizontal mounting rod, and the long pipe is manufactured by a cold bending method or a hot bending method, so that the manufacturing is simple.
Preferably, the chair back and the chair seat are arranged between the two connecting frames, the cross sections of the horizontal mounting rod, the first inclined mounting rod, the second inclined mounting rod and the supporting rod are all rectangular, and one side surface of each connecting frame, which is close to the chair back and the chair seat, is on the same plane.
In this technical scheme, horizontal installation pole, first slope installation pole, second slope installation pole and bracing piece all select to make with square pipe, when the installation, the horizontal installation pole can be with the better laminating of seat support, and the contact surface is bigger, convenient fixed.
Preferably, the first inclined mounting rod and the second inclined mounting rod extend out of the connecting position of the support rod and the second inclined mounting rod, the clamping rod and the angle support mounting part are respectively arranged on the extending parts, and the first inclined mounting rod and the support rod, and the second inclined mounting rod and the support rod are welded and fixed.
In the technical scheme, the first inclined mounting rod, the second inclined mounting rod, the horizontal mounting rod and the support rod form a structure similar to a triangle, and the structure is stable, firm and pressure-resistant.
Preferably, the first inclined mounting rod and the second inclined mounting rod are obliquely arranged on the horizontal mounting rod, and the first inclined mounting rod and the second inclined mounting rod are substantially parallel.
In this embodiment, the first and second inclined mounting rods are substantially parallel, which means that the first and second inclined mounting rods are parallel or a straight line of one is slightly offset from a parallel line of the other.
Preferably, the cross sections of the horizontal installation rod, the first inclined installation rod, the second inclined installation rod and the support rod are all rectangular, one side surface of each connecting frame, close to the chair back and the chair seat, is on the same plane, and the four connecting frames are all hollow structures.
Preferably, the office chair is still including setting up the chair foot of seat support lower extreme, two whippletrees make both form back of the chair frame about being provided with at least between the frame pole, the swivelling joint portion, the angle modulation support installation department of two frame poles pass through respectively two whippletrees fixed connection.
Preferably, the length ratio of the first inclined mounting rod to the second inclined mounting rod is 2-3, and the length ratio of any two of the first inclined mounting rod, the support rod and the horizontal mounting rod is not more than 1.2.
Preferably, the included angle between the support rod and the horizontal installation rod is 40-50 degrees.
Preferably, a gas spring support seat is mounted below the seat, and the gas spring support seat is arranged between at least two fixed mounting parts.
Preferably, the gas spring supporting seat include the bottom sprag seat and connect the bottom sprag seat with the gas spring of seat support, the bottom sprag seat on install 3 at least pulleys.
Preferably, the first inclined mounting rod, the support rod and the horizontal mounting rod are hollow rods with rectangular cross sections, and the cross sections of the first inclined mounting rod, the support rod and the horizontal mounting rod are the same in size and are provided with a side surface close to the seat, and the side surface is abutted against or parallel to the edges of the seat and the backrest.
Preferably, the support rod is vertically welded with the first inclined mounting rod, and the support rod is vertical to and welded with the second inclined mounting rod.
Preferably, the armrest has an upper surface for resting an arm and a lower surface opposite to the upper surface, the adjusting bayonet frame is vertically welded on the lower surface of the armrest and is close to the outer side of the armrest, one end of the first inclined mounting rod, which is far away from the horizontal mounting rod, is close to the inner side of the armrest, the end surface of the end is intersected with the lower surface of the armrest, and the clamping rod is welded in the middle of the end surface; when the clamping rod is clamped in the clamping opening in the adjusting clamping opening frame, the upper edge of the end face is abutted to the lower surface of the handrail.
Preferably, the kelly is a bolt that has the nut, adjust the bayonet frame for having a sheetmetal that has inside trompil, the trompil comprises slotted groove shape trompil and a plurality of tooth's socket shape trompil of arranging side by side, a plurality of slotted groove shape trompil with the slotted groove shape trompil link up, the size of nut is greater than tooth's socket shape trompil is nevertheless less than the size of slotted groove shape trompil.
Preferably, the armrest has an upper surface for resting an arm and a lower surface opposite to the upper surface, the adjusting bayonet frame is vertically welded on the lower surface of the armrest and is close to the outer side of the armrest, one end of the first inclined mounting rod, which is far away from the horizontal mounting rod, is close to the inner side of the armrest, the end surface of the end is intersected with the lower surface of the armrest, the clamping rod is a bolt with a nut, and the screw part of the clamping rod is welded in the middle of the end surface; the adjusting bayonet frame is a metal sheet with an inner opening, the opening is composed of a long-groove-shaped opening and a plurality of tooth-groove-shaped openings which are arranged side by side, the plurality of long-groove-shaped openings are communicated with the long-groove-shaped opening, and the size of the nut is larger than that of the tooth-groove-shaped opening but smaller than that of the long-groove-shaped opening; the distance from the top of all the tooth-shaped openings to the lower surface of the handrail is equal and equal to the vertical distance from the welding part of the screw rod part to the top end of the end surface.
Preferably, every the horizontal installation pole is equipped with two fixed mounting portions, and this horizontal installation pole is tetragonal hollow tube, the installation department is including passing the through-hole of this hollow tube perpendicularly and wearing to establish the bolt of this through-hole, the side installation department sets up just be the blind hole on the side of seat support, be fixed with in this blind hole with bolt complex nut, the bolt still be furnished with the hollow tube internal diameter equals the middle nut that is used for preventing that the hollow tube warp and provides the holding power.
Preferably, the angle support connection part is a through hole provided in the frame bar and a nut provided in the bar opposite to the through hole; the angle supports the installation department including transversely offering through-hole in the second slope pole and can wear to establish the bolt through this through-hole, the second slope pole is tetragonal hollow tube, and above-mentioned bolt still is furnished with and equals with above-mentioned hollow tube internal diameter and is used for preventing that the hollow tube warp and provide the middle nut of holding power, the distal end of nut is for sealing, be equipped with between the gasket of resin material between nut and the disc, the bolt sleeve of resin material has still been established to the cover on the bolt, and this telescopic external diameter is less than the internal diameter of through-hole on the hollow tube.
Preferably, the rotary connecting part is a through hole provided in the frame bar and a nut provided in the bar opposite to the through hole; the utility model discloses a chair back, including the rotatory installation department, including the handrail, the rotatory installation department includes a bolt and a drum, and this drum welding or an organic whole are connected the one end of handrail to this drum has the disc of an trompil on being close to the side of back of the chair one side, the size of the nut of bolt is greater than the size of trompil, the distal end of nut is for sealing, be equipped with between the gasket of resin material between nut and the disc.
In conclusion, the beneficial effects of the invention are as follows:
1. according to the invention, the horizontal mounting rod, the first inclined mounting rod, the second inclined mounting rod and the support rod are manufactured by adopting the rectangular metal tubes, the first inclined mounting rod and the support rod and the second inclined mounting rod and the support rod are fixedly welded, and the square tube with better bending resistance is selected as the handrail support, so that the handrail support has stronger compression resistance and has the advantages of easier processing, convenient welding and the like; first slope installation pole and second slope installation pole with the horizontal installation pole is the straight-bar, and they are connected through the crooked connecting portion that set up between them, and the structural design of integral type facilitates processing more, only needs cutting and tube bending.
2. According to the invention, the first inclined mounting rod and the second inclined mounting rod are obliquely arranged on the horizontal mounting rod, the first inclined mounting rod and the second inclined mounting rod are approximately parallel, the supporting rod is vertically welded with the first inclined mounting rod, the supporting rod is also vertically welded with the second inclined mounting rod, and the parallel and vertical structural arrangement ensures that the stress on the handrail can be dispersed when a person supports the handrail, so that the structure is more stable; and when the supporting rod is perpendicular to the first inclined mounting rod and the second inclined mounting rod, and the pressure on the handrail is transmitted to the handrail support, the force can be along the rods, other component forces which are not along the rod direction are not generated, and the welding structure is not damaged.
3. According to the invention, the horizontal mounting rod, the first inclined mounting rod, the second inclined mounting rod and the supporting rod are manufactured by rectangular pipes, so that the horizontal mounting rod and the chair seat can be better attached when being mounted, the contact surface is larger, and the fixing is convenient; the side surfaces, close to the chair back and the chair seat, of the horizontal installation rod, the first inclined installation rod, the second inclined installation rod and the support rod on each connecting frame are positioned on the same plane, and the horizontal installation rod, the first inclined installation rod, the second inclined installation rod and the support rod are all of a hollow structure, wherein the side surfaces, close to the chair back and the chair seat, of the horizontal installation rod, the first inclined installation rod, the second inclined installation rod and the support rod are positioned on the same plane, so that the chair can be more attractive after being installed, and the phenomenon of protrusion and the like caused by non-coplanarity is; the horizontal installation rod, the first inclined installation rod, the second inclined installation rod and the support rod are of hollow structures, so that the weight of the connecting frame is reduced, and the cost is saved.
4. The frame rods are at least provided with the upper cross bar and the lower cross bar between which the chair back frame is formed, and the rotary connecting parts and the angle adjusting and supporting installation parts of the two frame rods are respectively and fixedly connected through the two cross bars, so that the frame rods can be prevented from being deformed by the force of a backrest sleeve sleeved on the frame rods in the use process.
5. The length ratio of the first inclined mounting rod to the second inclined mounting rod is set to be 2-3, the length ratio of any two of the first inclined mounting rod, the support rod and the horizontal mounting rod is not more than 1.2, the included angle between the support rod and the horizontal mounting rod is set to be 40-50 degrees, under the length ratio, the force on the armrest can be transmitted to the backrest and the connecting frame to be divided into component forces which are downward along the support rod and downward along the first inclined mounting rod and upward along the backrest, and part of the component forces can be decomposed again to offset each other, so that the resultant force finally acting on the mounting positions of the connecting frame and the seat is minimum, and the abrasion of screws and the like at the mounting positions of the connecting frame and the seat is reduced.
6. The air spring supporting seat is arranged below the seat, so that the height of the seat can be adjusted according to the requirements of a user, and the comfort level of the product is improved; and the gas spring supporting seat is arranged between at least two fixed installation parts, so that the center of gravity of the seat and a person is always above the joint of the spring supporting seat and the seat, and the supporting structure is stable.
7. According to the invention, when the clamping rod is clamped in the clamping opening in the adjusting clamping opening frame, the upper edge of the upper end surface of the first inclined mounting rod is abutted with the lower surface of the handrail; the upper end face of the first inclined mounting rod bears the supporting effect of the handrail, and is not only borne by the clamping rod, the pressure on the welding position of the clamping rod and the first inclined supporting rod is reduced, and the structure is more stable.
8. The adjusting bayonet frame is designed to be provided with a metal sheet with an inner opening, the opening is composed of a long groove type opening and a plurality of tooth groove type openings which are arranged side by side, and the plurality of long groove type openings are communicated with the long groove type openings; the adjusting bayonet frame is closed, so that the adjusting bayonet frame can be prevented from being separated from the clamping rod in the adjusting process; the size of the nut is larger than the size of the tooth-shaped opening but smaller than the size of the long-groove-shaped opening; the distance between the tops of all the tooth-shaped openings and the lower surface of the handrail is equal to or greater than the vertical distance between the welding part of the rod part of the clamping rod and the top end of the end surface, and the distance can ensure that the upper edge of the upper end surface of the first inclined mounting rod is abutted against the lower surface of the handrail, so that the first inclined mounting rod can support the handrail.
Drawings
FIG. 1 is a side view of a chair back at its minimum angle of inclination
FIG. 2 is a side view of a chair back at maximum recline
FIG. 3 is a side view of the connecting frame
FIG. 4 is a side view of the armrest
In the figure: 1-chair back, 2-armrest, 3-chair seat, 4-connecting frame, 11-frame rod, 21-adjusting bayonet frame, 22-rotating installation part, 23-antiskid sleeve, 31-side installation part, 32-gas spring supporting seat, 41-horizontal installation rod, 42-first inclined installation rod, 43-second inclined installation rod, 44-supporting rod, 111-angle support connection part, 112-rotating connection part, 211-slotted opening, 212-slotted opening, 321-bottom supporting seat, 322-gas spring, 323-pulley, 411-fixed installation part, 421-clamping rod and 431-angle support installation part.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention will be further described with reference to the accompanying drawings.
Example 1
An office chair with adjustable pitching angle comprises a backrest 1, at least two armrests 2 and a chair seat 3, and two connecting frames 4 connecting the above three, the connecting frame having a horizontal mounting rod 41, a first inclined mounting rod 42, a second inclined mounting rod 43 and a supporting rod 44, the first and second inclined mounting rods 42 and 43 are respectively located at both ends of the horizontal mounting rod 41 and integrally connected with the horizontal mounting rod 41, the horizontal mounting rod 41 is provided with at least two fixed mounting parts 411, one end of the first inclined mounting rod 42 far away from the horizontal mounting rod 41 is provided with a clamping rod 421 which extends transversely, the second angled mounting bar 43 has an angular support mount 431 at an end thereof remote from the horizontal mounting bar 41, the supporting rod 44 is fixedly connected between the first inclined mounting rod 42 and the second inclined mounting rod 43; the backrest 1 comprises at least two frame bars 11 constituting the backrest, the frame bars 11 having an angle support connection 111 at their lower ends and a rotation connection 112 at their middle; the armrest is provided with an adjusting bayonet frame 21, the adjusting bayonet frame 21 is provided with a plurality of bayonets 211 which can be matched with the clamping rod 421, and the armrest 2 is also provided with a rotary mounting part 22 which is matched with the rotary connecting part 112; the two side surfaces of the seat 3 are respectively provided with side mounting parts 31 which are matched with the fixed mounting parts 411.
The horizontal installation rod 42, the first inclined installation rod 42, the second inclined installation rod 43, the support rod 44, the frame rod 11 and the handrail 2 are all made of metal materials, considering the manufacturing cost and the corrosion resistance degree required by the components in daily use, the horizontal installation rod 42, the first inclined installation rod 42, the second inclined installation rod 43, the support rod 44, the frame rod 11 and the handrail 2 are all made of stainless steel materials, the chair seat is more important for the feeling and the strength of a user, and the chair seat can be made of wood, bamboo or other wood-plastic materials.
The first inclined mounting rod 42 and the second inclined mounting rod 43 and the horizontal mounting rod 41 can be obtained by bending a rectangular steel pipe, and the first inclined mounting rod 42 and the second inclined mounting rod 43 are straight rods and are connected with the horizontal mounting rod 41 through a bent connecting part arranged between the straight rods.
In order to facilitate installation, the chair back 1 and the chair seat 3 are arranged between the two connecting frames 4, and during installation, the connecting frames 4 are fixed on two sides of the chair seat, then the chair back is fixed, and finally the armrests 2 are fixed; the cross sections of the horizontal mounting rod 41, the first inclined mounting rod 42, the second inclined mounting rod 43 and the support rod 44 are all rectangular, and one side surfaces, close to the chair back 1 and the chair seat 3, of the horizontal mounting rod 41, the first inclined mounting rod 42, the second inclined mounting rod 43 and the support rod 44 on each connecting frame are on the same plane.
In order to make the connecting frame 4 more stable, a supporting rod 44 is welded and fixed between the first inclined mounting rod 41 and the second inclined mounting rod 43, so that the whole connecting frame is a closed structure which is similar to a triangle and is difficult to deform obviously and irreversibly under the action of external force, and a good supporting effect can be achieved on the chair seat; the first inclined mounting rod 42 and the second inclined mounting rod 43 extend out of the connection position of the support rod 44 and the angle support mounting part (431) and the clamping rod 421 are respectively arranged on the extending parts.
In consideration of the stability of the connecting frame and the aesthetic degree of the connecting frame installed on the seat, the steel pipe is bent to obtain the first inclined installation rod 42, the second inclined installation rod 43 and the horizontal installation rod 41 which are integrally connected, the first inclined installation rod 42 and the second inclined installation rod 43 are obliquely arranged relative to the horizontal installation rod 41, and the first inclined installation rod 42 and the second inclined installation rod 43 are approximately parallel, in this case, the supporting rod 44 is more convenient to weld, can be welded more firmly, and has the smallest influence on a welding part by corresponding component force when being stressed; the supporting rod 44 is a rectangular tube having a rectangular parallelepiped shape, and when the first inclined mounting rod 42 and the second inclined mounting rod 43 are substantially parallel, both end surfaces of the supporting rod 44 can be respectively attached to the first inclined mounting rod 42 and the second inclined mounting rod 43, and the welding position is the largest.
Install air spring supporting seat (32) below the seat support 1, the air spring supporting seat set up between two at least fixed mounting portions 411.
Preferably, the gas spring supporting seat (32) comprises a bottom supporting seat (321) and a gas spring (322) for connecting the bottom supporting seat and the seat, and 3 pulleys (323) are arranged on the bottom supporting seat (321).
The handrail is close to the one end of adjusting buckle frame be provided with the cladding antiskid cover 23 on the handrail, the even sphere arch that is provided with on the surface of antiskid cover 23.
Example 2
An office chair with adjustable pitching angle comprises a backrest 1, at least two armrests 2 and a chair seat 3, and two connecting frames 4 connecting the above three, the connecting frame having a horizontal mounting rod 41, a first inclined mounting rod 42, a second inclined mounting rod 43 and a supporting rod 44, the first and second inclined mounting rods 42 and 43 are respectively located at both ends of the horizontal mounting rod 41 and integrally connected with the horizontal mounting rod 41, the horizontal mounting rod 41 is provided with at least two fixed mounting parts 411, one end of the first inclined mounting rod 42 far away from the horizontal mounting rod 41 is provided with a clamping rod 421 which extends transversely, the second angled mounting bar 43 has an angular support mount 431 at an end thereof remote from the horizontal mounting bar 41, the supporting rod 44 is fixedly connected between the first inclined mounting rod 42 and the second inclined mounting rod 43; the backrest 1 comprises at least two frame bars 11 constituting the backrest, the frame bars 11 having an angle support connection 111 at their lower ends and a rotation connection 112 at their middle; the armrest is provided with an adjusting bayonet frame 21, the adjusting bayonet frame 21 is provided with a plurality of bayonets 211 which can be matched with the clamping rod 421, and the armrest 2 is also provided with a rotary mounting part 22 which is matched with the rotary connecting part 112; the two side surfaces of the seat 3 are respectively provided with side mounting parts 31 which are matched with the fixed mounting parts 411.
For the convenience of installation, a rectangular tube is adopted to obtain the connecting frame 4 with the horizontal mounting rod 41, the first inclined mounting rod 42, the second inclined mounting rod 43 and the supporting rod 43 through bending processing and the like, and one side surface of each connecting frame 4, which is close to the chair back 1 and the chair seat 3, is positioned on the same plane, so that the horizontal mounting rod 41 can be tightly matched with the chair seat and fixed by screws when being installed; the rectangular tube with the hollow structure is adopted, so that the support device is lighter and is beneficial to installation and use of a finished office chair.
The office chair is still including setting up the chair foot of seat support lower extreme, two whippletrees make both form back of the chair frame about being provided with at least between the frame pole 11, swivelling joint portion 112, the angle modulation support installation department 431 of two frame poles 11 pass through respectively two whippletrees fixed connection.
The length ratio of the first inclined mounting rod 42 to the second inclined mounting rod 43 is 2, and the length ratio of any two of the first inclined mounting rod 42, the support rod 43 and the horizontal mounting rod 41 is 1. The included angle between the support rod 44 and the horizontal mounting rod 41 is 40-50 degrees, under the length proportion, the force on the armrest can be transmitted to the backrest and the connecting frame to be divided into component forces downwards along the support rod, downwards along the first inclined mounting rod and upwards along the backrest, and the component forces can be partially decomposed again to counteract each other, so that the resultant force finally acting on the mounting positions of the connecting frame and the seat is minimized, and the abrasion of screws and the like at the mounting positions of the connecting frame and the seat is reduced.
Install air spring supporting seat (32) below the seat support 1, the air spring supporting seat set up between two at least fixed mounting portions 411.
The gas spring supporting seat (32) comprises a bottom supporting seat (321) and a gas spring (322) connected with the bottom supporting seat and the seat, and 3 pulleys (323) are installed on the bottom supporting seat (321).
The first inclined mounting rod 42, the support rod 44 and the horizontal mounting rod 41 are hollow rods with rectangular cross sections, and the cross sections of the first inclined mounting rod, the support rod 44 and the horizontal mounting rod are the same in size and all have a side surface close to the seat 3, and the side surface is abutted against or parallel to the edges of the seat 3 and the backrest 1.
The support bar 44 is vertically welded to the first inclined mounting bar 42, and the support bar 44 is vertically welded to the second inclined mounting bar 43.
The armrest 2 has an upper surface for resting an arm and a lower surface opposite to the upper surface, the adjustment bayonet frame 21 is vertically welded on the lower surface of the armrest 2 and is close to the outer side of the armrest 2, the end of the first inclined mounting rod 42 far away from the horizontal mounting rod 41 is close to the inner side of the armrest 2, the end surface of the end intersects with the lower surface of the armrest, and the clamping rod 421 is welded in the middle of the end surface; when the clamping rod 421 is clamped into the clamping opening of the adjusting clamping opening frame 21, the upper edge of the end surface is abutted against the lower surface of the handrail.
The bayonet 421 is a bolt with a nut, the adjusting bayonet frame 21 is a metal sheet with an inner opening, the opening is composed of a slotted opening 211 and 4 slotted openings 212 arranged side by side, the 4 slotted openings 212 are communicated with the slotted opening 211, and the nut is larger than the slotted openings 212 but smaller than the slotted opening 211.
The handrail is close to the one end of adjusting buckle frame be provided with the cladding antiskid cover 23 on the handrail, the even protruding structure that is provided with on the surface of antiskid cover 23.
Example 3
An office chair with adjustable pitching angle comprises a backrest 1, at least two armrests 2 and a chair seat 3, and two connecting frames 4 connecting the above three, the connecting frame having a horizontal mounting rod 41, a first inclined mounting rod 42, a second inclined mounting rod 43 and a supporting rod 44, the first and second inclined mounting rods 42 and 43 are respectively located at both ends of the horizontal mounting rod 41 and integrally connected with the horizontal mounting rod 41, the horizontal mounting rod 41 is provided with at least two fixed mounting parts 411, one end of the first inclined mounting rod 42 far away from the horizontal mounting rod 41 is provided with a clamping rod 421 which extends transversely, the second angled mounting bar 43 has an angular support mount 431 at an end thereof remote from the horizontal mounting bar 41, the supporting rod 44 is fixedly connected between the first inclined mounting rod 42 and the second inclined mounting rod 43; the backrest 1 comprises at least two frame bars 11 constituting the backrest, the frame bars 11 having an angle support connection 111 at their lower ends and a rotation connection 112 at their middle; the armrest is provided with an adjusting bayonet frame 21, the adjusting bayonet frame 21 is provided with a plurality of bayonets 211 which can be matched with the clamping rod 421, and the armrest 2 is also provided with a rotary mounting part 22 which is matched with the rotary connecting part 112; the two side surfaces of the seat 3 are respectively provided with side mounting parts 31 which are matched with the fixed mounting parts 411.
The armrest 2 has an upper surface for resting an arm and a lower surface opposite to the upper surface, the adjustment bayonet frame 21 is vertically welded on the lower surface of the armrest 2 and is close to the outer side of the armrest 2, the end of the first inclined mounting rod 42 away from the horizontal mounting rod 41 is close to the inner side of the armrest 2, and the end surface of the end intersects with the lower surface of the armrest 2, the bayonet 421 is a bolt with a nut, and the screw part of the bayonet bolt is welded in the middle of the end surface; the adjusting bayonet frame 21 is a metal sheet with an inner opening, the opening is composed of a long-groove-shaped opening 211 and a plurality of tooth-groove-shaped openings 212 arranged side by side, the plurality of long-groove-shaped openings 211 and the long-groove-shaped openings 212 are communicated, and the size of the nut is larger than that of the tooth-groove-shaped openings 212 but smaller than that of the long-groove-shaped openings 211; the distance from the top of all the slotted holes 212 to the lower surface of the handrail 2 is equal and equal to the vertical distance from the screw part welding to the top end of the end surface.
Every horizontal installation pole 41 is equipped with two fixed mounting portion 411, and this horizontal installation pole 41 is tetragonal hollow tube, fixed mounting portion 422 is including passing the through-hole of this hollow tube perpendicularly and wearing to establish the bolt of this through-hole, side installation portion 31 sets up on the side of seat support and for the blind hole, be fixed with in this blind hole with bolt complex nut, the bolt still be furnished with the middle nut that the hollow tube internal diameter equals and is used for preventing that the hollow tube from warping and providing the holding power.
The angle support connection part 431 is a through hole provided in the frame bar 11 and a nut provided in a bar opposite to the through hole; the angle supports the installation department 431 including transversely offering through-hole in the second slope pole 43 and can wear to establish the bolt through this through-hole, the second slope pole 43 is tetragonal hollow tube, and above-mentioned bolt still is furnished with and equals with above-mentioned hollow tube internal diameter and is used for preventing the hollow tube deformation and provide the middle nut of holding power, the distal end of nut is for sealing, be equipped with between the gasket of resin material between nut and the disc, the bolt sleeve of resin material has still been established to the cover on the bolt, and this telescopic external diameter is less than the internal diameter of through-hole on the hollow tube.
The rotation connecting portion 112 is a through hole provided in the frame bar 11 and a nut provided in a bar opposite to the through hole; the rotation mounting part 112 includes a bolt and a cylinder, and this cylinder welding or an organic whole are connected the one end of handrail 2 to this cylinder has the disc of an trompil on being close to the side of back of the chair 1 one side, the size of the nut of bolt is greater than the size of trompil, the distal end of nut is for sealing, be equipped with between the gasket of resin material between nut and the disc.
Install air spring supporting seat (32) below the seat support 3, the air spring supporting seat set up between two at least fixed mounting portions 411.
Air spring supporting seat (32) include bottom sprag seat (321) and connect the bottom sprag seat with air spring (322) of seat support, bottom sprag seat (321) on install 3 pulley (323).
The handrail is close to the one end of adjusting buckle frame be provided with the cladding antiskid cover 23 on the handrail, the even protruding structure that is provided with on the surface of antiskid cover 23.
In the embodiment, all the connecting structures comprise screws and screw hole structures matched with the screws, and the screws are adopted for fixing or connecting, so that the mounting or maintenance is more convenient; meanwhile, the screws are all screws with the same specification, and the hole diameters of the screw holes are unified, so that the screw holes can be processed more efficiently and quickly.
While the present invention has been described in further detail with reference to the drawings and the detailed description thereof, it should be understood that the detailed description thereof is merely illustrative and not restrictive.
Claims (10)
1. The utility model provides an office chair of adjustable every single move angle degree, includes back, two at least handrails and seat support to and connect above-mentioned three's two link, its characterized in that: the connecting frame is provided with a horizontal mounting rod, a first inclined mounting rod, a second inclined mounting rod and a supporting rod, the first inclined mounting rod and the second inclined mounting rod are respectively arranged at two ends of the horizontal mounting rod and are integrally connected with the horizontal mounting rod, the horizontal mounting rod is at least provided with two fixing mounting parts, one end of the first inclined mounting rod, which is far away from the horizontal mounting rod, is provided with a clamping rod which extends transversely, one end of the second inclined mounting rod, which is far away from the horizontal mounting rod, is provided with an angle supporting mounting part, and the supporting rod is fixedly connected between the first inclined mounting rod and the second inclined mounting rod; the backrest comprises at least two frame rods forming the backrest, and the frame rods are provided with angle support connecting parts at the lower ends of the frame rods and rotary connecting parts at the middle parts of the frame rods; the armrest is provided with an adjusting bayonet frame, a plurality of bayonets which can be matched with the clamping rod are arranged in the adjusting bayonet frame, and the armrest is also provided with a rotary mounting part which is matched with the rotary connecting part; the two side surfaces of the chair seat are respectively provided with a side installation part matched with the fixed installation part.
2. An adjustable pitch office chair as claimed in claim 1, wherein: horizontal installation pole, first slope installation pole, second slope installation pole, bracing piece, frame pole and handrail are the metal material, the seat support be wooden, bamboo or other wood-plastic materials.
3. An adjustable pitch office chair as claimed in claim 1, wherein: the first inclined mounting rod and the second inclined mounting rod are straight rods, and the first inclined mounting rod and the second inclined mounting rod are connected with the horizontal mounting rod through a bent connecting part arranged between the first inclined mounting rod and the horizontal mounting rod.
4. An adjustable pitch office chair as claimed in claim 1, wherein: the back of the chair and seat support setting are between two link, and horizontal installation pole, first slope installation pole, second slope installation pole and the cross-section of bracing piece are the rectangle, on every link horizontal installation pole, first slope installation pole, second slope installation pole and bracing piece be close to the back of the chair and a side of seat support and be in the coplanar.
5. An adjustable pitch office chair as claimed in claim 1, wherein: first slope installation pole, second slope installation pole all stretch out bracing piece and self hookup location, and the kelly with the angle support installation department set up respectively on the part that stretches out, first slope installation pole with between the bracing piece second slope installation pole with be welded fastening between the bracing piece.
6. An adjustable pitch office chair as claimed in claim 1, wherein: the first inclined mounting rod and the second inclined mounting rod are obliquely arranged on the horizontal mounting rod and are parallel.
7. An adjustable pitch office chair as claimed in claim 1, wherein: the cross sections of the horizontal installation rod, the first inclined installation rod, the second inclined installation rod and the supporting rod are all rectangular, one side surface of each connecting frame, close to the chair back and the chair seat, is located on the same plane, and the four connecting frames are all of a hollow structure.
8. An adjustable pitch office chair as claimed in claim 1, wherein: the office chair is still including setting up the chair foot of seat support lower extreme, two whippletrees make both form back of the chair frame about being provided with at least between the frame pole, the swivelling joint portion, the angle modulation support installation department of two frame poles pass through respectively two whippletrees fixed connection.
9. An adjustable pitch office chair as claimed in claim 1, wherein: the length ratio of the first inclined mounting rod to the second inclined mounting rod is 2-3, and the length ratio of any two of the first inclined mounting rod, the support rod and the horizontal mounting rod is not more than 1.2.
10. An adjustable pitch office chair as claimed in claim 1, wherein: the bracing piece with the contained angle of horizontal installation pole is 40~ 50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011235913.3A CN112220263A (en) | 2020-11-09 | 2020-11-09 | Office chair with adjustable pitching angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011235913.3A CN112220263A (en) | 2020-11-09 | 2020-11-09 | Office chair with adjustable pitching angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112220263A true CN112220263A (en) | 2021-01-15 |
Family
ID=74123146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011235913.3A Pending CN112220263A (en) | 2020-11-09 | 2020-11-09 | Office chair with adjustable pitching angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112220263A (en) |
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| CN110522222A (en) * | 2019-09-20 | 2019-12-03 | 安吉曼菲家具有限公司 | A kind of chair back adjustable handrail structure |
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| CH692969A5 (en) * | 1998-10-20 | 2003-01-15 | Provenda Marketing Ag | Workstation chair with an adjustable seat |
| JP2001321242A (en) * | 2000-05-16 | 2001-11-20 | Kokuyo Co Ltd | Armrest |
| KR20040063327A (en) * | 2003-01-07 | 2004-07-14 | 윤병철 | Chair for adjusting inclination of seat back |
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