CN213035827U - Back-to-back type four-person chair framework structure - Google Patents
Back-to-back type four-person chair framework structure Download PDFInfo
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- CN213035827U CN213035827U CN202020978883.4U CN202020978883U CN213035827U CN 213035827 U CN213035827 U CN 213035827U CN 202020978883 U CN202020978883 U CN 202020978883U CN 213035827 U CN213035827 U CN 213035827U
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Abstract
The utility model provides a back-to-back four-person seat skeleton texture, including the double seat skeleton texture in right side and the double seat skeleton texture in left side that are mirror symmetry and set up, the upper cover plate subassembly, the side cap board subassembly, through upper cover plate subassembly and side cap board subassembly with double seat skeleton texture in right side and the double seat skeleton texture fixed mounting in left side become a back-to-back four-person seat skeleton texture, with whole back-to-back four-person seat skeleton texture through fifth linking bridge and side mounting panel fixed mounting on the car inboard wall, overall structure is simple, high durability and convenient installation, and simultaneously, preceding sloping and back sloping, adopt concave shell type design, increased with the welding area of down-turned pipe, make overall structure intensity obtain increasing substantially, hollow design has also reduced overall structure's weight.
Description
Technical Field
The utility model belongs to the technical field of the seat, especially, relate to a back-to-back formula four-person seat skeleton texture.
Background
Most of seats applied in the technical field of railway vehicles are in an integrated multi-seat mode, the seat surface is designed into an integrated structure and is arranged on the side wall of the railway vehicle, the multi-seat mode is long in length, the straightness of all the seat surfaces is difficult to guarantee in the production process, meanwhile, the assembly process needs cooperation of multiple persons, the assembly process is complex and is influenced by installation conditions, installation gaps are easy to generate after installation, and attractiveness is influenced.
In order to increase space utilization and provide passenger's comfort level by bus, back-to-back formula seat should appear and give birth to, and present back-to-back formula seat is provided with the supporting leg structure mostly to guarantee the support intensity of seat, but because the existence of supporting leg, occupied certain car inner space, increased the whole weight of automobile body simultaneously, and be unfavorable for cleanly.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists among the background art, the utility model provides a back-to-back four-person seat skeleton texture.
The technical scheme of the utility model as follows:
a back-to-back four-person seat framework structure comprises a right-side double seat framework assembly, a left-side double seat framework assembly, an upper cover plate assembly and a side cover plate assembly which are arranged in a mirror symmetry manner;
the right double seat frame assembly comprises a lower bent pipe, the lower bent pipe comprises a lower bent pipe seat cushion section at the middle part and lower bent pipe backrest sections at two end parts, the lower bent pipe seat cushion section is arranged into a U-shaped structure, the lower bent pipe backrest sections are respectively arranged at two free ends of the lower bent pipe seat cushion section, the lower bent pipe backrest sections and the lower bent pipe seat cushion section form a certain angle, a connecting area between the lower bent pipe backrest sections and the lower bent pipe seat cushion section is arranged in an arc shape, connecting pipes are respectively welded at the upper ends of the lower bent pipe backrest sections, an upper bent pipe is welded at the upper ends of the two connecting pipes together, an intermediate bent beam is welded between the upper bent pipe and the lower bent pipe and comprises an intermediate bent beam seat cushion section and an intermediate bent beam backrest section, one end of the intermediate bent beam seat cushion section is welded at the middle position of the lower bent pipe, and one end of the intermediate bent beam backrest section is welded at the middle position of the upper bent pipe, the middle camber beam seat cushion section and the two sides of the lower bent pipe seat cushion section are arranged in parallel, the middle camber beam backrest section and the lower bent pipe backrest section are arranged in parallel, and a connecting area between the middle camber beam backrest section and the middle camber beam seat cushion section is arranged in an arc shape;
cushion support beams are respectively arranged between the middle bent beam cushion section and the lower bent pipe cushion section, the cushion support beams are welded on the lower bent pipe cushion section, and two ends of each cushion support beam are respectively welded on one side of the lower bent pipe cushion section and one side of the middle bent beam cushion section; an arc-shaped decorative plate is arranged between the middle bent beam and the lower bent pipe respectively, one end of the decorative plate is welded in the connecting area of the middle bent beam backrest section and the middle bent beam seat section, and the other end of the decorative plate is welded in the connecting area of the lower bent pipe seat section and the lower bent pipe backrest section; a backrest support beam is respectively arranged between the upper bent pipe and the backrest section of the middle bent beam, the backrest support beam is welded on the upper bent pipe, one end of the backrest support beam is welded at the top end of the backrest section of the middle bent beam, and the backrest support beam is provided with a mounting hole;
the connecting region welding of going up return bend and lower bend one side has the connecting journal stirrup of being connected with the inboard wall of car, set up the mounting hole on the connecting journal stirrup, the connecting region welding of going up return bend and lower bend opposite side has first connecting support, the welding has the second connecting support on the lower bend back section of first connecting support below, the bottom of lower bend cushion section is provided with preceding sloping and back sloping that the structure is the same, preceding sloping is concave shell type structure, preceding sloping reduces from the head to the tail height in proper order, the intermediate position of preceding sloping has seted up the welding arch, the welding arch welding of preceding sloping welds the bottom of middle camber cushion section, one side welding of preceding sloping is on the cushion supporting beam, the tail end welding of preceding sloping is on the lower bend cushion section, the head end of preceding sloping and the side mounting panel welding of installing the side wall in the car, the side mounting plate is welded on the lower bent pipe cushion section, a mounting hole is formed in the side mounting plate, and the side mounting plate and the connecting support lug are arranged on the same plane; the welding bulge of the rear oblique beam is welded at the bottom of the middle bent beam cushion section, one side of the rear oblique beam is welded on the decorative plate, the tail end of the rear oblique beam is welded on the lower bent tube cushion section, the head end of the rear oblique beam is welded on the side mounting plate, and cushion supporting plates are respectively arranged between the front oblique beam and the rear oblique beam on the left side and the right side of the welding bulge;
the upper cover plate component comprises an upper cover plate arranged between an upper bent pipe in the left double seat framework component and an upper bent pipe in the right double seat framework component, two third connecting brackets are welded at the bottom of the upper cover plate, fourth connecting brackets are fixedly arranged on the third connecting brackets, mounting holes are respectively formed at two ends of the fourth connecting bracket, one end of the fourth connecting bracket is fixedly connected with the backrest supporting beam in the left double seat framework component through the mounting holes, the other end of the fourth connecting bracket is fixedly connected with the backrest supporting beam in the right double seat framework component through the mounting holes, one end of the upper cover plate is welded with a fifth connecting bracket connected with the inner side wall of the vehicle, the fifth connecting bracket is provided with a mounting hole, the fifth connecting bracket is fixedly connected with a connecting lug in the left double seat framework assembly and a connecting lug in the right double seat framework assembly through mounting holes;
the side cover plate assembly comprises a side cover plate arranged between a lower bent pipe in a left double seat framework assembly and a lower bent pipe in a right double seat framework assembly, a first connecting plate is welded at the upper part of the inner surface of the side cover plate, a second connecting plate is fixedly installed on the first connecting plate, mounting holes are formed in two sides of the second connecting plate, one side of the second connecting plate is fixedly connected with a first connecting support in the left double seat framework assembly through the mounting holes, and the other side of the second connecting plate is fixedly connected with a first connecting support in the right double seat framework assembly through the mounting holes; the side cover plate below the first connecting plate is welded with a third connecting plate, a fourth connecting plate is fixedly mounted on the third connecting plate, mounting holes are formed in two sides of the fourth connecting plate, one side of the fourth connecting plate is fixedly connected with the second connecting support in the left double seat framework assembly through the mounting holes, and the other side of the fourth connecting plate is fixedly connected with the second connecting support in the right double seat framework assembly through the mounting holes.
As the utility model discloses a preferred, the last mouth of pipe outside and the last elbow welding of connecting pipe, the lower mouth of pipe outside and the lower elbow welding of connecting pipe.
As the utility model discloses a preferred, the arc region of lower elbow, the arc region of middle camber beam, the arc region's of decorative board radian is the same.
As the utility model discloses a preferred, a plurality of lightening holes have been seted up on a cushion supporting beam, decorative board, the back supporting beam.
As the utility model discloses a preferred, the top welding of the middle and upper return bend of the double seat skeleton subassembly in right side has the handrail, the handle butt joint of vertical direction in handrail and the automobile body.
The utility model has the advantages as follows:
the utility model provides a back-to-back four-person seat skeleton texture, through upper cover plate subassembly and side cover plate subassembly become a back-to-back four-person seat skeleton texture with double seat skeleton texture fixed mounting in right side and the double seat skeleton texture in left side, with whole back-to-back four-person seat skeleton texture through fifth linking bridge and side mounting panel fixed mounting on the car inboard wall, the overall structure is simple, high durability and convenient installation, and simultaneously, preceding sloping and back sloping, adopt concave shell type design, increased with the welding area of return bend down, make overall structure intensity obtain increasing substantially, hollow design has also reduced overall structure's weight. Wherein go up the return bend and constitute overall structure's frame part with the return bend jointly, go up return bend and return bend down and be through carrying out the bending over a slow fire preparation with stainless steel, the technology is realized easily, and bearing capacity is good, and the arc region of return bend, the arc region of middle camber beam, the arc region design of decorative board do not have any closed angle sharp limit, has improved passenger safety in utilization, and handsome in appearance simultaneously.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a schematic structural view of the middle-right double seat frame assembly of the present invention.
Fig. 4 is an exploded view of fig. 3.
Fig. 5 is a schematic structural view of the left-side double seat frame assembly of the present invention.
Fig. 6 is a schematic structural view of the upper cover plate assembly of the present invention.
Fig. 7 is an exploded view of fig. 6.
Fig. 8 is a schematic structural diagram of the middle side cover plate assembly of the present invention.
Fig. 9 is an exploded view of fig. 8.
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings 1-9.
Referring to fig. 1 and 2: the utility model provides a four people seat skeleton texture of back-to-back formula, is including the double seat skeleton subassembly 2 in right side and the double seat skeleton subassembly in left side that are mirror symmetry setting, upper cover plate subassembly 3, side cover plate subassembly 4.
Referring to fig. 3 and 4: the right double seat frame assembly 1 comprises a lower elbow 101, the lower elbow 101 comprises a lower elbow seat cushion section 1011 at the middle part and lower elbow backrest sections 1012 at two end parts, the lower elbow seat cushion section 1011 is arranged in a U-shaped structure, the lower elbow backrest sections 1012 are respectively arranged at two free ends of the lower elbow seat cushion section 1011, the lower elbow backrest section 1012 and the lower elbow seat cushion section 1011 form a certain angle, a connecting area between the lower elbow backrest section 1012 and the lower elbow seat cushion section 1011 is arranged in an arc shape, the upper ends of the lower elbow backrest sections 1012 are respectively welded with a connecting pipe 102, the upper ends of the two connecting pipes 102 are jointly welded with an upper elbow 103, a middle elbow 104 is welded between the upper elbow 103 and the lower elbow 101, the middle elbow 104 comprises a middle elbow cushion section 1041 and a middle elbow backrest section 1042, one end of the middle elbow cushion section 1041 is welded at the middle position of the lower elbow 101, one end of the middle bent beam backrest section 1042 is welded in the middle of the upper bent pipe 103, the middle bent beam cushion section 1041 is arranged in parallel with two sides of the lower bent pipe cushion section 1011, the middle bent beam backrest section 1042 is arranged in parallel with the lower bent pipe backrest section 1012, and a connecting area between the middle bent beam backrest section 1042 and the middle bent beam cushion section 1041 is arranged in an arc shape;
a cushion support beam 105 is respectively arranged between the middle bent beam cushion section 1041 and the lower bent pipe cushion section 1011, the cushion support beam 105 is welded on the lower bent pipe cushion section 1011, and two ends of the cushion support beam 105 are respectively welded on one side of the lower bent pipe cushion section 1011 and one side of the middle bent beam cushion section 1041; an arc-shaped decorative plate 106 is respectively arranged between the middle curved beam 104 and the lower curved pipe 101, one end of the decorative plate 106 is welded in the connecting area of the middle curved beam backrest section 1042 and the middle curved beam cushion section 1041, and the other end is welded in the connecting area of the lower curved pipe cushion section 1011 and the lower curved pipe backrest section 1012; a backrest support beam 107 is respectively arranged between the upper bent pipe 103 and the middle bent beam backrest section 1042, the backrest support beam 107 is welded on the upper bent pipe 103, one end of the backrest support beam 107 is welded at the top end of the middle bent beam backrest section 1042, and the backrest support beam 107 is provided with a mounting hole;
the connecting region of one side of the upper elbow 103 and the lower elbow 101 is welded with a connecting support lug 108 connected with an inner side wall of a vehicle, the connecting support lug 108 is provided with a mounting hole, the connecting region of the other side of the upper elbow 103 and the lower elbow 101 is welded with a first connecting support 109, a lower elbow backrest section 1012 below the first connecting support 109 is welded with a second connecting support 110, the bottom of a lower elbow cushion section 1011 is provided with a front oblique beam 111 and a rear oblique beam 112 which have the same structure, the front oblique beam 111 is of a concave shell structure, the heights of the front oblique beam 111 are sequentially reduced from head to tail, a welding bulge 1111 is arranged in the middle of the front oblique beam 111 and is welded at the bottom of a middle elbow cushion section 1041, one side of the front oblique beam 111 is welded on the cushion support beam 105, the tail end of the front oblique beam 111 is welded on the lower elbow cushion section 1011, the head end of the front oblique beam 111 is welded with a side mounting plate 113 installed on the inner side wall of the vehicle, the side mounting plate 113 is welded on a lower elbow cushion section 1011, a mounting hole is formed in the side mounting plate 113, and the side mounting plate 113 and the connecting support lug 108 are arranged on the same plane; the welding projection 1121 of the rear oblique beam 112 is welded at the bottom of the middle bent beam cushion section 1041, one side of the rear oblique beam 112 is welded on the decorative plate 106, the tail end of the rear oblique beam 112 is welded at the lower bent tube cushion section 1011, the head end of the rear oblique beam 112 is welded on the side mounting plate 113, and cushion supporting plates 114 are respectively arranged between the front oblique beam 111 and the rear oblique beam 112 on the left side and the right side of the welding projection 1111.
Referring to fig. 2, fig. 3, and fig. 5 to fig. 7: the upper cover plate assembly 3 comprises an upper cover plate 301 arranged between an upper bent pipe 203 in the left double seat framework assembly 2 and an upper bent pipe 103 in the right double seat framework assembly 1, two third connecting supports 302 are welded at the bottom of the upper cover plate 301, a fourth connecting support 303 is fixedly mounted on each third connecting support 302, mounting holes are formed in two ends of each fourth connecting support 303, one end of each fourth connecting support 303 is fixedly connected with the backrest supporting beam 207 in the left double seat framework assembly 2 through the mounting hole, the other end of each fourth connecting support is fixedly connected with the backrest supporting beam 107 in the right double seat framework assembly 1 through the mounting hole, a fifth connecting support 304 connected with the inner side wall of the vehicle is welded at one end of the upper cover plate 301, mounting holes are formed in the fifth connecting support 304, the fifth connecting support 304 is fixedly connected with the connecting lugs 208 in the left double seat framework assembly 2 and the connecting lugs 108 in the right double seat framework assembly 1 through the mounting holes And (4) connecting.
Referring to fig. 2, 4, 5, 8, and 9: the side cover plate assembly 4 comprises a side cover plate 401 arranged between a lower bent pipe 201 in the left double seat framework assembly 2 and a lower bent pipe 101 in the right double seat framework assembly 1, a first connecting plate 402 is welded at the upper part of the inner surface of the side cover plate 401, a second connecting plate 403 is fixedly installed on the first connecting plate 402, mounting holes are formed in two sides of the second connecting plate 403, one side of the second connecting plate 403 is fixedly connected with a first connecting bracket 209 in the left double seat framework assembly 2 through the mounting holes, and the other side of the second connecting plate is fixedly connected with a first connecting bracket 109 in the right double seat framework assembly 1 through the mounting holes; the lower side cover plate 401 of the first connecting plate 402 is welded with a third connecting plate 404, the third connecting plate 404 is fixedly provided with a fourth connecting plate 405, mounting holes are formed in two sides of the fourth connecting plate 405, one side of the fourth connecting plate 405 is fixedly connected with the second connecting bracket 210 in the left double seat framework assembly 2 through the mounting holes, and the other side of the fourth connecting plate 405 is fixedly connected with the second connecting bracket 110 in the right double seat framework assembly 1 through the mounting holes.
Referring to FIG. 4: the outer part of an upper pipe opening of the connecting pipe 102 is welded with an upper elbow 103, and the outer part of a lower pipe opening of the connecting pipe 102 is welded with a lower elbow 101;
the radian of the arc-shaped area of the lower elbow 101, the arc-shaped area of the middle bent beam 104 and the arc-shaped area of the decorative plate 106 are the same;
a plurality of lightening holes are formed in the cushion supporting beam 105, the decorative plate 106 and the backrest supporting beam 107;
an armrest 115 is welded above the upper elbow 103 in the right double seat frame assembly 1, and the armrest 115 is in butt joint with a handle in the vertical direction in the vehicle body.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a four people seat skeleton texture of back-to-back formula which characterized in that: the double-seat chair comprises a right double-seat chair framework component and a left double-seat chair framework component which are arranged in a mirror symmetry manner, an upper cover plate component and a side cover plate component;
the right double seat frame assembly comprises a lower bent pipe, the lower bent pipe comprises a lower bent pipe seat cushion section at the middle part and lower bent pipe backrest sections at two end parts, the lower bent pipe seat cushion section is arranged into a U-shaped structure, the lower bent pipe backrest sections are respectively arranged at two free ends of the lower bent pipe seat cushion section, the lower bent pipe backrest sections and the lower bent pipe seat cushion section form a certain angle, a connecting area between the lower bent pipe backrest sections and the lower bent pipe seat cushion section is arranged in an arc shape, connecting pipes are respectively welded at the upper ends of the lower bent pipe backrest sections, an upper bent pipe is welded at the upper ends of the two connecting pipes together, an intermediate bent beam is welded between the upper bent pipe and the lower bent pipe and comprises an intermediate bent beam seat cushion section and an intermediate bent beam backrest section, one end of the intermediate bent beam seat cushion section is welded at the middle position of the lower bent pipe, and one end of the intermediate bent beam backrest section is welded at the middle position of the upper bent pipe, the middle camber beam seat cushion section and the two sides of the lower bent pipe seat cushion section are arranged in parallel, the middle camber beam backrest section and the lower bent pipe backrest section are arranged in parallel, and a connecting area between the middle camber beam backrest section and the middle camber beam seat cushion section is arranged in an arc shape;
cushion support beams are respectively arranged between the middle bent beam cushion section and the lower bent pipe cushion section, the cushion support beams are welded on the lower bent pipe cushion section, and two ends of each cushion support beam are respectively welded on one side of the lower bent pipe cushion section and one side of the middle bent beam cushion section; an arc-shaped decorative plate is arranged between the middle bent beam and the lower bent pipe respectively, one end of the decorative plate is welded in the connecting area of the middle bent beam backrest section and the middle bent beam seat section, and the other end of the decorative plate is welded in the connecting area of the lower bent pipe seat section and the lower bent pipe backrest section; a backrest support beam is respectively arranged between the upper bent pipe and the backrest section of the middle bent beam, the backrest support beam is welded on the upper bent pipe, one end of the backrest support beam is welded at the top end of the backrest section of the middle bent beam, and the backrest support beam is provided with a mounting hole;
the connecting region welding of going up return bend and lower bend one side has the connecting journal stirrup of being connected with the inboard wall of car, set up the mounting hole on the connecting journal stirrup, the connecting region welding of going up return bend and lower bend opposite side has first connecting support, the welding has the second connecting support on the lower bend back section of first connecting support below, the bottom of lower bend cushion section is provided with preceding sloping and back sloping that the structure is the same, preceding sloping is concave shell type structure, preceding sloping reduces from the head to the tail height in proper order, the intermediate position of preceding sloping has seted up the welding arch, the welding arch welding of preceding sloping welds the bottom of middle camber cushion section, one side welding of preceding sloping is on the cushion supporting beam, the tail end welding of preceding sloping is on the lower bend cushion section, the head end of preceding sloping and the side mounting panel welding of installing the side wall in the car, the side mounting plate is welded on the lower bent pipe cushion section, a mounting hole is formed in the side mounting plate, and the side mounting plate and the connecting support lug are arranged on the same plane; the welding bulge of the rear oblique beam is welded at the bottom of the middle bent beam cushion section, one side of the rear oblique beam is welded on the decorative plate, the tail end of the rear oblique beam is welded on the lower bent tube cushion section, the head end of the rear oblique beam is welded on the side mounting plate, and cushion supporting plates are respectively arranged between the front oblique beam and the rear oblique beam on the left side and the right side of the welding bulge;
the upper cover plate component comprises an upper cover plate arranged between an upper bent pipe in the left double seat framework component and an upper bent pipe in the right double seat framework component, two third connecting brackets are welded at the bottom of the upper cover plate, fourth connecting brackets are fixedly arranged on the third connecting brackets, mounting holes are respectively formed at two ends of the fourth connecting bracket, one end of the fourth connecting bracket is fixedly connected with the backrest supporting beam in the left double seat framework component through the mounting holes, the other end of the fourth connecting bracket is fixedly connected with the backrest supporting beam in the right double seat framework component through the mounting holes, one end of the upper cover plate is welded with a fifth connecting bracket connected with the inner side wall of the vehicle, the fifth connecting bracket is provided with a mounting hole, the fifth connecting bracket is fixedly connected with a connecting lug in the left double seat framework assembly and a connecting lug in the right double seat framework assembly through mounting holes;
the side cover plate assembly comprises a side cover plate arranged between a lower bent pipe in a left double seat framework assembly and a lower bent pipe in a right double seat framework assembly, a first connecting plate is welded at the upper part of the inner surface of the side cover plate, a second connecting plate is fixedly installed on the first connecting plate, mounting holes are formed in two sides of the second connecting plate, one side of the second connecting plate is fixedly connected with a first connecting support in the left double seat framework assembly through the mounting holes, and the other side of the second connecting plate is fixedly connected with a first connecting support in the right double seat framework assembly through the mounting holes; the side cover plate below the first connecting plate is welded with a third connecting plate, a fourth connecting plate is fixedly mounted on the third connecting plate, mounting holes are formed in two sides of the fourth connecting plate, one side of the fourth connecting plate is fixedly connected with the second connecting support in the left double seat framework assembly through the mounting holes, and the other side of the fourth connecting plate is fixedly connected with the second connecting support in the right double seat framework assembly through the mounting holes.
2. A back-to-back four-person seat frame structure according to claim 1, wherein: the outer portion of the upper pipe opening of the connecting pipe is welded with the upper bent pipe, and the outer portion of the lower pipe opening of the connecting pipe is welded with the lower bent pipe.
3. A back-to-back four-person seat frame structure according to claim 1, wherein: the radian of the arc-shaped area of the lower bent pipe, the arc-shaped area of the middle bent beam and the arc-shaped area of the decorative plate are the same.
4. A back-to-back four-person seat frame structure according to claim 1, wherein: a plurality of lightening holes are formed in the cushion supporting beam, the decorating plate and the backrest supporting beam.
5. A back-to-back four-person seat frame structure according to claim 1, wherein: and an armrest is welded above the upper bent pipe in the right double seat framework assembly and is in butt joint with a handle in the vertical direction in the vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020978883.4U CN213035827U (en) | 2020-06-01 | 2020-06-01 | Back-to-back type four-person chair framework structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020978883.4U CN213035827U (en) | 2020-06-01 | 2020-06-01 | Back-to-back type four-person chair framework structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213035827U true CN213035827U (en) | 2021-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020978883.4U Active CN213035827U (en) | 2020-06-01 | 2020-06-01 | Back-to-back type four-person chair framework structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213035827U (en) |
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2020
- 2020-06-01 CN CN202020978883.4U patent/CN213035827U/en active Active
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