CN113749449B - Office chair chassis with rotating structure - Google Patents
Office chair chassis with rotating structure Download PDFInfo
- Publication number
- CN113749449B CN113749449B CN202111087223.2A CN202111087223A CN113749449B CN 113749449 B CN113749449 B CN 113749449B CN 202111087223 A CN202111087223 A CN 202111087223A CN 113749449 B CN113749449 B CN 113749449B
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- Prior art keywords
- chassis
- rotary
- connecting piece
- rotating
- seat shell
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- 239000003365 glass fiber Substances 0.000 claims abstract description 7
- 239000004677 Nylon Substances 0.000 claims abstract description 6
- 229920001778 nylon Polymers 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims description 3
- 229920006324 polyoxymethylene Polymers 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000001746 injection moulding Methods 0.000 abstract description 3
- 239000000306 component Substances 0.000 abstract 1
- 239000008358 core component Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- A47C7/02—Seat parts
- A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
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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
- A47C7/002—Chair or stool bases
-
- 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
- A47C7/02—Seat parts
Landscapes
- Chairs Characterized By Structure (AREA)
Abstract
The invention discloses an office chair chassis with a rotary structure, which comprises a chassis body, a rotary body and a seat shell, wherein the rotary body is integrally V-shaped, the bottom of the front end of the rotary body is provided with a chassis groove, the rear end of the chassis body is arranged in the chassis groove, and the rear end of the chassis body is in pin joint with the rotary body in the middle through a fixed shaft; the bottom of the seat shell is provided with a rotary groove, the front end of the rotary body is arranged in the rotary groove, and the front end of the rotary body is in pin joint with the seat shell through a rotary shaft; the rear end of the rotating body is connected to the chair back; chassis connecting pieces are arranged on two side faces of the chassis body. The invention is provided with the rotating body with the V-shaped teeterboard structure, and the two ends of the rotating body rotate around the rotating pivot to realize the forward tilting and backward tilting functions of the chair back; the core components are all formed by injection molding of nylon and glass fiber materials, the components are assembled by grooves and bosses, the structure is stable and reliable, and the assembly and maintenance are convenient.
Description
Technical Field
The invention relates to the field of office furniture, in particular to an office chair chassis with a rotary structure.
Background
The chair is used as a seat in daily activities such as life, work, study and the like, and has the basic functions of comfort, convenience and safety. The structure of the chassis of the office chair in the market at present is generally complex, the volume is overlarge, and the weight is overlarge. There are many internal fittings and many steel fittings. The manufacturing is complex, the assembly is numerous, and the production, the maintenance and the environmental protection are not facilitated. Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
The invention aims to solve the technical problem of providing an office chair chassis with a rotating structure, which is provided with a rotating body with a V-shaped teeterboard structure, and two ends of the rotating body rotate around rotating fulcrums to realize the forward tilting and backward tilting of a chair back.
The invention provides an office chair chassis with a rotary structure, which aims to solve the technical problems and comprises a chassis body, a rotary body and a seat shell, wherein the rotary body is integrally V-shaped, the bottom of the front end of the rotary body is provided with a chassis groove, the rear end of the chassis body is arranged in the chassis groove, and the rear end of the chassis body is in pin joint with the rotary body in the middle through a fixed shaft; the bottom of the seat shell is provided with a rotary groove, the front end of the rotary body is arranged in the rotary groove, and the front end of the rotary body is in pin joint with the seat shell through a rotary shaft; the rear end of the rotating body is connected to the chair back; the bottom of the seat shell is connected with the upper part of the front end of the chassis body through a tension spring; chassis connecting pieces are arranged on two side surfaces of the chassis body; the top surface of the front end of the chassis connecting piece is connected with the bottom surface of the front end of the seat shell; when the chair back leans back under the action of external force, the rotating body is driven to rotate around the fixed shaft; the rotating body drives the seat shell to rotate through the rotating shaft, so that the chassis connecting piece is forced to elastically deform; when the external force is cancelled, the chair back is restored to a free state under the driving of the elastic force of the chassis connecting piece.
Further, a fixed shaft hole is formed in the rear end of the chassis body, a fixed shaft sleeve is arranged in the fixed shaft hole of the chassis body, a fixed hole is formed in the side wall of the chassis groove of the rotating body, and the fixed shaft penetrates through the fixed shaft sleeve and is provided with an end part in the fixed hole, so that the rotating body can rotate around the fixed shaft; the front end of the rotating body is provided with a rotating shaft hole, the side wall of the rotating groove of the seat shell is provided with a rotating hole, and the rotating shaft penetrates through the rotating shaft hole and is provided with an end part in the rotating hole, so that the rotating body can rotate around the rotating shaft.
Further, be provided with U type recess in the middle of the seat shell bottom, the bottom surface of U type recess is the plane, be provided with the connecting piece on the extension spring in the U type recess, rotatory recess sets up the rear side at U type recess.
Further, the tension spring upper connecting piece is fixed to the bottom of the seat shell through a flat cup screw; the upper part of the front end of the chassis body is provided with a cavity, a lower tension spring connecting piece is arranged in the cavity, the lower tension spring connecting piece is fixed to the chassis body through a cup head screw, and the cup head screw penetrates through a screw through hole at the front end of the chassis body to be connected to the lower tension spring connecting piece; the tension spring side lower connecting piece is arranged on the tension spring lower connecting piece, one end of the tension spring is connected to the tension spring upper connecting piece, and the other end of the tension spring is connected to the tension spring side lower connecting piece.
Further, square grooves are formed in two sides of the front end of the bottom of the seat shell, screw through holes are formed in the square grooves, square bosses matched with the square grooves are formed in the top surface of the front end of the chassis connecting piece, and screw holes are formed in the square bosses; the square boss is clamped into the square groove and fixed through a screw.
Further, the bottom of the chassis body is provided with an air rod mounting hole; the middle part is provided with the square through-hole that holds adjustment handle in the middle of the chassis body, direction through-hole and gas pole mounting hole intercommunication.
Further, rectangular grooves are formed in two sides of the bottom of the chassis body, threaded holes are formed in the rectangular grooves, rectangular bosses matched with the rectangular grooves are formed in the inner sides of the rear ends of the chassis connecting pieces, and threaded through holes are formed in the rectangular bosses; the rectangular boss is clamped into the rectangular groove and fixed by a screw.
Further, two sides of the rear end of the rotating body are provided with conical grooves, a connecting cavity for accommodating the rear end of the rotating body is arranged in the middle of the bottom of the chair back, the side wall of the connecting cavity is provided with a conical boss matched with the conical grooves, and the rear end of the rotating body is inserted into the connecting cavity; the two sides of the bottom of the chair back are provided with I-shaped bosses for connecting armrests.
Further, a decorative cover is arranged on the inner side of the rear end of the chassis connecting piece; the front end of the decorative cover is provided with a flat convex position, two side surfaces of the rear end of the decorative cover are provided with bayonets, and the decorative cover is clamped with the chassis connecting piece.
Further, the chassis body, the rotating body, the chair back, the seat shell and the chassis connecting piece are all made of nylon added with glass fibers, and the fixing shaft and the rotating shaft are made of stainless steel; the fixed shaft sleeve is made of polyoxymethylene plastic.
Compared with the prior art, the invention has the following beneficial effects: according to the office chair chassis with the rotating structure, the rotating fulcrum is arranged at the rear end of the chassis body and is connected with the V-shaped rotating body, one end of the rotating body is connected with the chair back, and the other end of the rotating body is connected with the seat shell, so that forward tilting and backward tilting are realized; chassis connecting pieces are arranged on the left side and the right side of the chassis body, one end of each chassis connecting piece is connected with the chassis body, and the other end of each chassis connecting piece is connected with the front end of the bottom of the seat shell; the larger the angle of the backward tilting is, the larger the stress of the chassis connecting piece is, the force resisting the backward tilting is, and the stability is maintained; after the external force is removed, the chassis connecting piece forces the seat shell and the chair back to reset; the connecting position of the armrests on the chassis is transferred to the left side and the right side of the bottom of the chair back, so that the structure of the chassis is simplified; a tension spring is arranged between the chassis body and the seat shell, so that the chassis structure is more stable; the components are connected with the boss by adopting the grooves, so that the structure is simple and reliable, and the assembly and maintenance are convenient; the main components are all made of nylon materials added with glass fibers, and can be manufactured by adopting common injection molding, so that the process is simple and the stability is good; all parts do not need post-treatment process, and accessories can be directly recycled, so that the environment is protected.
Drawings
FIG. 1 is a side cross-sectional view of an office chair chassis having a swivel structure according to an embodiment of the invention;
FIG. 2 is a side view of an office chair chassis having a swivel structure according to an embodiment of the invention;
FIG. 3 is an exploded view of an office chair chassis having a swivel structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a chassis body according to an embodiment of the present invention;
FIG. 5 is a schematic view of a rotary body according to an embodiment of the present invention;
FIG. 6 is a schematic view of a housing structure according to an embodiment of the present invention;
FIG. 7 is a schematic view of the bottom structure of a chair back according to an embodiment of the present invention;
FIG. 8 is a schematic view of a chassis connector according to an embodiment of the present invention;
fig. 9 is a schematic structural view of a tension spring assembly according to an embodiment of the present invention.
In the figure:
1. a chassis body; 2. fixing the shaft sleeve; 3. a fixed shaft; 4. a rotation shaft; 5. rotating the body; 6. a chair back; 7. a seat shell; 8. a tension spring upper connecting piece; 9. a tension spring side lower connecting piece; 10. a tension spring; 11. a tension spring lower connecting piece; 12. a flat cup screw; 13. a cup head screw; 14. a decorative cover; 15. a chassis connection; 51. a chassis groove; 52. a fixing hole; 53. a conical groove; 54. a rotation shaft hole; 55. a glue reducing groove; 61. an I-shaped boss; 62. a connecting cavity; 63. a conical boss; 71. a rotating groove; 72. a rotation hole; 73. a U-shaped groove; 74. square grooves; 75. a plane; 101. a fixed shaft hole; 102. square through holes; 103. a cavity; 104. a rectangular groove; 151. rectangular boss; 152. square boss.
Detailed Description
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a side view of an office chair chassis having a swivel structure according to an embodiment of the invention; FIG. 2 is a side cross-sectional view of an office chair chassis having a swivel structure according to an embodiment of the invention; fig. 3 is an exploded view of an office chair chassis having a swivel structure according to an embodiment of the present invention.
Referring to fig. 1-3, the office chair chassis with a rotary structure in the embodiment of the invention comprises a chassis body 1, a rotary body 5 and a seat shell 7, wherein the rotary body 5 is integrally V-shaped, a chassis groove 51 is arranged at the bottom of the front end of the rotary body 5, the rear end of the chassis body 1 is arranged in the chassis groove 51, and the rear end of the chassis body 1 is pin-connected with the rotary body 5 in the middle through a fixed shaft 3; the bottom of the seat shell 7 is provided with a rotary groove 71, the front end of the rotary body 5 is arranged in the rotary groove 71, and the front end of the rotary body 5 is in pin joint with the seat shell 7 through the rotary shaft 4; the rear end of the rotating body 5 is connected to the chair back 6; the bottom of the seat shell 7 is connected with the upper part of the front end of the chassis body 1 through a tension spring 10; chassis connecting pieces 15 are arranged on two side surfaces of the chassis body 1; the front top surface of the chassis connecting piece 15 is connected with the front bottom surface of the seat shell 7; when the chair back 6 leans back under the action of external force, the rotating body 5 is driven to rotate around the fixed shaft 3; the rotating body 5 drives the seat shell 7 to rotate through the rotating shaft 4, so that the chassis connecting piece 15 is forced to elastically deform; when the external force is canceled, the seatback 6 is restored to a free state by the elastic force of the chassis link 15.
Referring to fig. 4, in the office chair chassis with a rotary structure of the embodiment of the present invention, a tapered air bar mounting hole is provided in the bottom center of the chassis body 1 and connected with a lifting air bar; the middle part of the center of the chassis body 1 is provided with a square through hole 102, and the square through hole 102 is communicated with an air bar mounting hole and is used for assembling a handle for controlling the air bar to lift and tilt forward and backward. The rear upper end of the chassis body 1 is provided with a fixed shaft hole 101, the fixed shaft hole 101 is internally provided with a fixed shaft sleeve 2, and the fixed shaft 3 is assembled and then connected with a fixed hole 52 of the rotary body 5; the top surface of the front upper end is U-shaped, the pressure born by the supporting seat shell 7 is provided with a cavity 103, the space is used for the assembly and the movement of the tension spring assembly, the front end of the cavity 103 is provided with a screw hole, and the tension spring lower connecting piece 11 is fixed with the chassis body 1 through the screw hole. Rectangular grooves 104 are formed in the left side surface and the right side surface of the chassis body 1, and rectangular bosses 151 of the alignment chassis connecting piece 15 are assembled. After assembly, the cup head screws 13 are inserted through the chassis connecting pieces 15 and locked into the screw holes in the rectangular grooves 104. The cup head screw 13 receives only a force in the left-right direction, and this force is generally small. The chassis body 1 is a stress part, so that nylon materials added with 30% of glass fibers or 40% of glass fibers are adopted, and the requirements of mechanical properties of the chassis body are met.
Referring to fig. 5, in the office chair chassis with a rotating structure according to the embodiment of the present invention, the rotating body 5 is in a V-shaped teeterboard shape, a fixing 52 hole is provided at a rotation fulcrum of the rotating body 5, and penetrates through the left and right sides of the rotating body 5; the bottom of the front end of the rotary body 5 is transversely provided with a chassis groove 51 corresponding to the position of the fixing hole 52, the chassis groove 51 is an arc-shaped groove having a 1/4 arc for accommodating the rear upper end of the chassis body 1, and a rotation space for allowing the chassis body 1 to rotate 18 ° is also required. The two sides of the rear end of the rotating body 5 are provided with conical grooves 53 which are matched with conical bosses 63 of the chair back 6, and the middle position of the rear end of the rotating body 5 is provided with screw holes for locking the front and back degrees of freedom of the chair back 6. The front end of the rotating body 5 is provided with a rotating shaft hole 54 which is connected with a rotating hole 72 of the seat shell 7 through the rotating shaft 4 and drives the seat shell 7 to rotate. The rotary body 5 is also provided with a plurality of glue reducing grooves 55, so as to achieve the purposes of saving materials and reducing weight.
Referring to fig. 6, in the office chair chassis with the rotary structure according to the embodiment of the present invention, a U-shaped groove 73 is formed in the middle of the bottom of the seat shell 7, and the bottom of the U-shaped groove 73 is a plane 75, which is attached to the top surface of the front upper end of the chassis body 1, so as to bear the gravity of a person. The rear end of the bottom of the groove is provided with a strip-shaped large boss and two small convex ribs, a screw hole is formed in the middle of the large boss, a connecting piece 8 on the tension spring is clamped on the large boss, and then the connecting piece is fixed on the seat shell 7 by a flat cup screw 12. Two small ribs limit the freedom of the connecting piece 8 on the tension spring in the front-back direction. The rear of the U-shaped groove is provided with a rotation groove 71, and the rotation groove 71 is a 1/4 circular groove arranged transversely for accommodating the front end of the rotation body 5 and assembling them together through a rotation hole 72. Square grooves 74 are formed in two sides of the bottom of the front end of the seat shell 7, screw holes are formed in the square grooves 74, and the square bosses 152 of the chassis connecting piece 15 are assembled.
Referring to fig. 7, in the office chair chassis with a rotary structure according to the embodiment of the present invention, two sides of the front end of the bottom of the chair back 6 are provided with an i-shaped boss 61 for connecting with the armrests. The middle of the front end of the bottom of the chair back 6 is provided with a connecting cavity 62 for accommodating the rear end of the rotating body 5, and two sides of the connecting cavity 62 are provided with conical bosses 63 which are matched with the conical grooves 53 of the rotating body 5, so that the purpose of precise matching is achieved. Finally, the seat back 6 is locked to the screw hole of the rotary body 5 through the screw hole in the middle of the connecting cavity 62 by the cup head screw 13, the freedom degrees of the seat back 6 and the rotary body 5 are limited, and the seat back 6 and the rotary body 5 are assembled into a whole. The upper part of the chair back 6 is not significantly different from other types of chair backs.
Referring to fig. 8, in the office chair chassis with a rotary structure of the embodiment of the present invention, a rectangular boss 151 matching with the rectangular groove 104 of the chassis body 1 is provided on the inner side of the rear end of the chassis connecting member 15, and a threaded via hole is provided on the rectangular boss 151; the rectangular boss 151 is snapped into the rectangular recess 104 and secured by a screw. The top surface of the front end of the chassis connecting piece 15 is provided with a square boss 152 matched with the square groove 74 at the bottom of the seat shell 7, and the square boss 152 is provided with a screw hole; the square boss 152 is snapped into the square recess 74 and secured by a screw.
Specifically, the inner side of the rear end of the chassis connecting member 15 is provided with a decorative cover 14; the front end of the decorative cover 14 is provided with a flat convex position, the two side surfaces of the rear end are provided with bayonets, the decorative cover is clamped with the chassis connecting piece 15, and the decorative cover 14 is used for covering screws for connecting the chassis connecting piece 15 and the chassis body 1.
Referring to fig. 9, in the office chair chassis with a rotary structure according to the embodiment of the present invention, a tension spring assembly is disposed between a seat shell 7 and a chassis connecting member 15, the tension spring assembly includes a tension spring upper connecting member 8, a tension spring side lower connecting member 9, a tension spring 10, a tension spring lower connecting member 11 and a flat cup screw 12, the tension spring upper connecting member 8 is fixed at the rear end of a U-shaped groove 73 of the seat shell 7, the tension spring lower connecting member 11 is fixed in a cavity 103 of the chassis body 1, the tension spring 10 is a steel wire with a diameter of 2.5 mm, one end thereof hooks cylindrical bosses on both sides of the tension spring upper connecting member 8, and the other end hooks cylindrical bosses of the tension spring side lower connecting member 9. In the free state, the tension spring 10 is in a certain degree of pulling state, so that a certain forward tilting force is maintained, the chair back 6 and the seat shell 7 are forced to be in a forward tilting trend all the time, and the chair back 6 and the seat shell 7 are prevented from loosening and shaking in the free state.
Specifically, convex ribs are arranged on the upper side and the lower side of the spring upper connecting piece 8 in the front-back direction, a flat cup screw through hole is arranged between the two convex ribs, and the flat cup screw through hole penetrates through the upper side and the lower side; cylindrical bosses are arranged on the left side and the right side of the connecting piece 8 on the spring, and are penetrated by through holes. The tension spring side lower connecting piece 9 is provided with a through hole of a flat cup screw 12, and a concentric circular boss is arranged in the direction of the through hole. The lower connecting piece 11 of extension spring is the cylinder in fore-and-aft direction, is provided with the through-hole in the middle, and the left and right directions respectively has a big cylindrical boss and little cylindrical boss, and the through-hole runs through about the boss in the middle. The flat cup screw 12 and the cup head screw 13 are all 8.8-level standard components.
In summary, in the office chair chassis with the rotating structure according to the embodiment of the invention, the rear end of the chassis body 1 is provided with the rotating fulcrum, the rotating fulcrum is connected with the V-shaped rotating body 5, one end of the rotating body 5 is connected with the chair back 6, and the other end is connected with the seat shell 7, so as to realize forward tilting and backward tilting; chassis connecting pieces 15 are arranged on the left side and the right side of the chassis body 1, one end of each chassis connecting piece is connected with the chassis body 1, and the other end of each chassis connecting piece is connected with the front end of the bottom of the seat shell 7; the larger the angle of the backward tilting is, the larger the stress of the chassis connecting piece 15 is, the force resisting the backward tilting is kept stable; after the external force is removed, the chassis connecting piece 15 forces the seat shell 7 and the seat back 6 to reset; the connecting position of the armrests on the original chassis is transferred to the left side and the right side of the bottom of the chair back 6, so that the structure of the chassis is simplified; a tension spring 10 is arranged between the chassis body 1 and the seat shell 7, so that the chassis structure is more stable; the components are connected with the boss by adopting the grooves, so that the structure is simple and reliable, and the assembly and maintenance are convenient; the main components are all made of nylon materials added with glass fibers, and can be manufactured by adopting common injection molding, so that the process is simple and the stability is good; all parts do not need post-treatment process, and accessories can be directly recycled, so that the environment is protected.
While the invention has been described with reference to the preferred embodiments, it is not intended to limit the invention thereto, and it is to be understood that other modifications and improvements may be made by those skilled in the art without departing from the spirit and scope of the invention, which is therefore defined by the appended claims.
Claims (10)
1. The office chair chassis with the rotary structure is characterized by comprising a chassis body, a rotary body and a seat shell, wherein the rotary body is integrally V-shaped, a chassis groove is formed in the bottom of the front end of the rotary body, the rear end of the chassis body is arranged in the chassis groove, and the rear end of the chassis body is in pin joint with the rotary body in the middle through a fixed shaft; the bottom of the seat shell is provided with a rotary groove, the front end of the rotary body is arranged in the rotary groove, and the front end of the rotary body is in pin joint with the seat shell through a rotary shaft; the rear end of the rotating body is connected to the chair back; the bottom of the seat shell is connected with the upper part of the front end of the chassis body through a tension spring; chassis connecting pieces are arranged on two side surfaces of the chassis body; the top surface of the front end of the chassis connecting piece is connected with the bottom surface of the front end of the seat shell; when the chair back leans back under the action of external force, the rotating body is driven to rotate around the fixed shaft; the rotating body drives the seat shell to rotate through the rotating shaft, so that the chassis connecting piece is forced to elastically deform; when the external force is cancelled, the chair back is restored to a free state under the driving of the elastic force of the chassis connecting piece.
2. The office chair chassis with a rotating structure according to claim 1, wherein a fixing shaft hole is provided at the rear end of the chassis body, a fixing shaft sleeve is provided in the fixing shaft hole of the chassis body, a fixing hole is provided at the side wall of the chassis groove of the rotating body, and the fixing shaft passes through the fixing shaft sleeve and has an end portion provided in the fixing hole, so that the rotating body can rotate around the fixing shaft; the front end of the rotating body is provided with a rotating shaft hole, the side wall of the rotating groove of the seat shell is provided with a rotating hole, and the rotating shaft penetrates through the rotating shaft hole and is provided with an end part in the rotating hole, so that the rotating body can rotate around the rotating shaft.
3. The office chair chassis with a rotary structure according to claim 2, wherein a U-shaped groove is arranged in the middle of the bottom of the seat shell, the bottom surface of the U-shaped groove is a plane, a tension spring upper connecting piece is arranged in the U-shaped groove, and the rotary groove is arranged at the rear side of the U-shaped groove.
4. The office chair chassis with a rotating structure according to claim 3, wherein the tension spring upper connector is fixed to the bottom of the seat shell by a flat cup screw; the upper part of the front end of the chassis body is provided with a cavity, a lower tension spring connecting piece is arranged in the cavity, the lower tension spring connecting piece is fixed to the chassis body through a cup head screw, and the cup head screw penetrates through a screw through hole at the front end of the chassis body to be connected to the lower tension spring connecting piece; the tension spring side lower connecting piece is arranged on the tension spring lower connecting piece, one end of the tension spring is connected to the tension spring upper connecting piece, and the other end of the tension spring is connected to the tension spring side lower connecting piece.
5. The office chair chassis with the rotary structure according to claim 1, wherein square grooves are formed in two sides of the front end of the bottom of the seat shell, screw through holes are formed in the square grooves, square bosses matched with the square grooves are formed in the top surface of the front end of the chassis connecting piece, and screw holes are formed in the square bosses; the square boss is clamped into the square groove and fixed through a screw.
6. The office chair chassis with a rotating structure according to claim 1, wherein the bottom of the chassis body is provided with an air bar mounting hole; the middle part is provided with the square through-hole that holds adjustment handle in the middle of the chassis body, square through-hole and gas pole mounting hole intercommunication.
7. The office chair chassis with the rotary structure according to claim 1, wherein rectangular grooves are formed on two sides of the bottom of the chassis body, threaded holes are formed in the rectangular grooves, rectangular bosses matched with the rectangular grooves are formed on the inner side of the rear end of the chassis connecting piece, and threaded through holes are formed in the rectangular bosses; the rectangular boss is clamped into the rectangular groove and fixed by a screw.
8. The office chair chassis with the rotary structure according to claim 1, wherein conical grooves are formed on two sides of the rear end of the rotary body, a connecting cavity for accommodating the rear end of the rotary body is formed in the middle of the bottom of the chair back, conical bosses matched with the conical grooves are formed on the side walls of the connecting cavity, and the rear end of the rotary body is inserted into the connecting cavity; the two sides of the bottom of the chair back are provided with I-shaped bosses for connecting armrests.
9. The office chair chassis with a rotary structure according to claim 1, wherein a decorative cover is provided on the inner side of the rear end of the chassis connecting member; the front end of the decorative cover is provided with a flat convex position, two side surfaces of the rear end of the decorative cover are provided with bayonets, and the decorative cover is clamped with the chassis connecting piece.
10. The office chair chassis with a rotary structure according to claim 2, wherein the chassis body, the rotary body, the chair back, the seat shell and the chassis connecting piece are all made of nylon added with glass fibers, and the fixing shaft and the rotary shaft are made of stainless steel; the fixed shaft sleeve is made of polyoxymethylene plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087223.2A CN113749449B (en) | 2021-09-16 | 2021-09-16 | Office chair chassis with rotating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087223.2A CN113749449B (en) | 2021-09-16 | 2021-09-16 | Office chair chassis with rotating structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113749449A CN113749449A (en) | 2021-12-07 |
| CN113749449B true CN113749449B (en) | 2024-04-16 |
Family
ID=78796031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111087223.2A Active CN113749449B (en) | 2021-09-16 | 2021-09-16 | Office chair chassis with rotating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113749449B (en) |
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| CN201700772U (en) * | 2010-04-12 | 2011-01-12 | 陈千奎 | Chair chassis locking mechanism |
| CN102805503A (en) * | 2012-08-20 | 2012-12-05 | 陈千奎 | Chair tray with tensile type connecting pipe |
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| CN113749449A (en) | 2021-12-07 |
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