Armrest connection structure and office chair with it

Abstract

This invention discloses an armrest connection structure and an office chair having the same, relating to the field of seating technology. The structure includes: a seat body with a backrest panel on the rear side, the backrest panel having a first protrusion with a first protrusion mounting hole; an armrest component with an armrest mounting portion and an armrest extension portion, the armrest mounting portion having a third protrusion on its front side and a lower armrest mounting hole on its lower side; and a connector connecting the backrest panel and the armrest mounting portion, the connector having a second protrusion on its front side and a second protrusion mounting hole. The seat body and the armrest component are connected via the connector, which improves the stability of the armrest connection. A first fixing screw is obliquely inserted to splice the connector and the seat body, resulting in more reasonable force distribution on the first fixing screw, making it less prone to loosening and ensuring sufficient stability of the connector and the seat body even during long-term operation.

Description

Technical Field

[0001] This invention relates to the field of seating technology, and more particularly to an armrest connection structure and an office chair having the same. Background Technology

[0002] Many modern chairs feature armrests to enhance seating comfort. However, because armrests extend outwards, they are typically manufactured separately from the main seat structure and then assembled. The armrests and main seat are usually connected by horizontally inserted screws, which not only exposes the screws and affects the appearance but also causes them to loosen over time, leading to a less secure armrest structure. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes an armrest connection structure and an office chair having the same.

[0004] According to a first aspect of the present invention, an armrest connection structure includes: a seat body including a backrest panel with a rear side, the backrest panel having a first protrusion with a first protrusion mounting hole facing a rearward and downward direction; an armrest member including an armrest mounting portion and an armrest extension portion, the armrest mounting portion being connected to the rear side of the backrest panel, the armrest mounting portion having a third protrusion with a lower armrest mounting hole on its lower side, and the armrest extension portion extending forward; a connector connecting the backrest panel and the armrest mounting portion, the connector having a second protrusion with a second protrusion with a second protrusion mounting hole facing a rearward and downward direction, a first fixing screw passing through the second protrusion mounting hole and the first protrusion mounting hole in sequence to connect the connector to the seat body, the connector having a lower connector mounting hole on its lower side, and a second fixing screw passing through the lower connector mounting hole and the lower armrest mounting hole in sequence from bottom to top to connect the connector to the armrest member.

[0005] According to some embodiments of the present invention, a backrest mounting recess is provided on the rear side of the backrest panel, the first protrusion is located in the backrest mounting recess, and the front side of the connector is inserted into the backrest mounting recess as the front part of the connector.

[0006] According to some embodiments of the present invention, a first alignment hole is provided in the mounting recess of the backrest panel, and a first alignment plug is provided on the front part of the connector, the first alignment plug being inserted into the first alignment hole.

[0007] According to some embodiments of the present invention, a second alignment plug is provided in the recessed part of the backrest panel, the second alignment plug is connected to the outer wall of the first protrusion, and a second alignment groove is provided on the front part of the connector, the second alignment plug is inserted into the second alignment groove.

[0008] According to some embodiments of the present invention, there are at least two first protrusions on the backrest panel, and the number of second protrusions on the connector is the same as the number of first protrusions.

[0009] According to some embodiments of the present invention, a connector recess is provided on the rear side of the connector, and the first fixing screw passes through the connector recess, the second protrusion mounting hole and the first protrusion mounting hole in sequence to connect the connector to the seat body. The third protrusion of the armrest extends into the connector recess. The lower side of the connector recess is a connector base plate. The lower mounting hole of the connector is located on the connector base plate and communicates with the connector recess.

[0010] According to some embodiments of the present invention, a handrail mounting recess is provided on the front side of the handrail mounting portion, and the rear side of the connector is inserted into the handrail mounting recess as the rear side portion of the connector.

[0011] According to some embodiments of the present invention, an upper buckle recess is provided on the upper side of the recess of the armrest mounting part, and an upper buckle plate is provided on the upper side of the rear part of the connector, and the upper buckle plate is inserted into the upper buckle recess.

[0012] According to some embodiments of the present invention, a third alignment plug is provided on the left and right sides of the recess in the armrest mounting part, and a third alignment groove is provided on the left and right sides of the rear part of the connector, and the third alignment plug is inserted into the third alignment groove.

[0013] The armrest connection structure according to the embodiments of the present invention has at least the following technical effects: the connection between the seat body and the armrest is made through a connector, which can improve the stability of the armrest connection. Moreover, the structure of the seat body, the armrest and the connector is relatively simple and easier to manufacture, which can reduce the difficulty of seat production and process requirements. The first fixing screw is obliquely inserted to splice the connector and the seat body. The force on the first fixing screw is more reasonable, making the first fixing screw less likely to loosen. This ensures that the connector and the seat body are sufficiently firm even after long-term operation. The second fixing screw is inserted from bottom to top to splice the armrest and the seat body. This allows the screw hole of the second fixing screw to be hidden on the lower side of the armrest mounting part, making the armrest and even the entire seat structure more aesthetically pleasing without affecting the assembly of the armrest.

[0014] An office chair according to a second aspect of the present invention includes an armrest connection structure according to the first aspect of the present invention described above.

[0015] The office chair according to embodiments of the present invention has at least the following beneficial effects: the connection between the seat body and the armrest is achieved through a connector, which improves the stability of the armrest connection. Moreover, the structure of the seat body, armrest, and connector is relatively simple and easier to manufacture, reducing the difficulty and process requirements of chair production. The first fixing screw is obliquely inserted to splice the connector and the seat body, making the force on the first fixing screw more reasonable and preventing it from loosening. This ensures that the connector and the seat body remain sufficiently firm even after long-term operation. The second fixing screw is inserted from bottom to top to splice the armrest and the seat body, allowing the screw hole of the second fixing screw to be hidden under the armrest mounting part. This makes the armrest and even the entire office chair more aesthetically pleasing without affecting the assembly of the armrest.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Additional aspects and advantages of the invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a perspective view of the handrail connection structure of the present invention;

[0019] Figure 2 This is an exploded view of the handrail connection structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the connection structure of the handrail of the present invention;

[0021] Figure 4 yes Figure 3 Enlarged view of a portion of region A

[0022] Figure 5 This is a schematic diagram of the assembly process of the connector of the present invention;

[0023] Figure 6 Enlarged view of a portion of region B

[0024] Figure 7 This is a schematic diagram of the assembly process of the handrail component of the present invention;

[0025] Figure 8 Enlarged view of a portion of region C

[0026] Figure 9 This is a perspective view of the main body of the seat in this invention;

[0027] Figure 10 yes Figure 9 A magnified view of a portion of region D in the middle;

[0028] Figure 11 This is a perspective view of the connector in this invention;

[0029] Figure 12 This is a perspective view of the connector in this invention from another angle;

[0030] Figure 13 This is a perspective view of the handrail mounting part in this invention.

[0031] Figure label:

[0032] Seat body 100, seat cushion 110, backrest 120, backrest mounting recess 130, first alignment hole 131, second alignment insert 132, first protrusion 140, first protrusion mounting hole 141, first protrusion mating surface 142; armrest 200, armrest extension 210, armrest mounting part 220, armrest mounting part recess 230, upper buckle recess 231, third alignment insert 232, third protrusion 240, lower armrest mounting hole 241, third protrusion mating surface 142; Surface 242; Connector 300, front part of connector 310, second protrusion 311, second protrusion mounting hole 312, first alignment insert 313, second alignment groove 314, second protrusion mating surface 315, side retaining rib of connector 316, rear part of connector 320, concave part of connector 321, bottom plate of connector 322, upper buckle plate 323, third alignment groove 324, lower mounting hole of connector 330; first fixing screw 410, second fixing screw 420. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] In the description of this invention, "multiple" means two or more, and "greater than," "less than," "exceeding," etc., are understood to exclude the stated number. The use of "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0036] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0037] The following is for reference. Figure 1 and Figure 2 The handrail connection structure according to an embodiment of the present invention is described.

[0038] like Figure 1 and Figure 2 As shown, the armrest connection structure according to an embodiment of the present invention includes a seat body 100, an armrest component 200, and a connector 300.

[0039] Reference Figure 2 , Figure 3 The seat body 100 includes a backrest panel 120 on the rear side, a first protrusion 140 on the rear side of the backrest panel 120, the first protrusion 140 having a first protrusion mounting hole 141 facing the rearward and downward direction; the armrest 200 includes an armrest mounting part 220 and an armrest extension part 210, the armrest mounting part 220 is connected to the rear side of the backrest panel 120, a third protrusion 240 is provided on the front side of the armrest mounting part 220, a lower armrest mounting hole 241 is provided on the lower side of the third protrusion 240, and the armrest extension part 210 extends forward; the connector 300 is connected to the backrest panel 120. Between the 20 and the armrest mounting part 220, a second protrusion 311 is provided on the front side of the connector 300. The second protrusion 311 has a second protrusion mounting hole 312 facing the rear-lower direction. The first fixing screw 410 passes through the second protrusion mounting hole 312 and the first protrusion mounting hole 141 in sequence to connect the connector to the seat body 100. A lower mounting hole 330 is provided on the lower side of the connector 300. The second fixing screw 420 passes through the lower mounting hole 330 and the lower mounting hole 241 of the armrest in sequence from bottom to top to connect the connector 300 to the armrest part 200.

[0040] For example, such as Figure 1 , Figure 2 and Figure 3As shown, the seat body 100 includes a backrest panel 120 on the rear side, which is fixed to the backrest panel. A first protrusion 140 is provided on the rear side of the backrest panel 120. The first protrusion 140 has a first protrusion mounting hole 141, which faces the rear-lower direction, that is, the extension direction line of the first protrusion mounting hole 141 faces the rear-lower direction.

[0041] The armrest component 200 includes an armrest mounting portion 220 and an armrest extension portion 210, and the armrest component 200 is generally fixed. The armrest mounting portion 220 is connected to the rear side of the backrest panel 120, that is, the armrest component 200 is connected to the backrest panel 120 of the seat body 100 through the armrest mounting portion 220. A third protrusion 240 is provided on the front side of the armrest mounting portion 220, and an armrest mounting hole 241 is provided on the lower side of the third protrusion 240. The armrest extension portion 210 extends forward, and when people sit on the seat body 100, they can place their hands on the armrest extension portion 210 or hold the armrest extension portion 210.

[0042] The connector 300 connects the backrest panel 120 and the armrest mounting portion 220. A second protrusion 311 is provided on the front side of the connector 300. The second protrusion 311 has a second protrusion mounting hole 312, which faces downwards and rearwards. That is, the extension line of the second protrusion mounting hole 312 is the same as the extension line of the first protrusion mounting hole 141, also facing downwards and rearwards. A first fixing screw 410 passes through the second protrusion mounting hole 312 and the first protrusion mounting hole 141 in sequence to connect the connector 300 to the seat body 100. That is, the first fixing screw 410 is installed along the extension lines of the second protrusion mounting hole 312 and the first protrusion mounting hole 141. This completes the splicing of the connector 300 and the seat body 100.

[0043] A lower mounting hole 330 is provided on the lower side of the connector 300. A second fixing screw 420 passes sequentially from bottom to top through the lower mounting hole 330 and the lower mounting hole 241 of the armrest, connecting the connector 300 to the armrest component 200. Specifically, the second fixing screw 420 is installed along the extension direction of the lower mounting hole 330 and the lower mounting hole 241. This completes the splicing of the connector 300 and the armrest component 200, and subsequently, the splicing of the armrest component 200 and the seat body 100.

[0044] In actual operation, taking the example of one armrest 200 on each of the left and right sides of the main body of the seat 100, refer to... Figure 4First, align the front of the connector 300 with the rear of the backrest 120 of the seat body 100, and align the second protrusion mounting hole 312 and the first protrusion mounting hole 141. Then, the first fixing screw 410 is installed at an angle towards the upper front along the extension direction of the second protrusion mounting hole 312 and the first protrusion mounting hole 141, thus completing the splicing of the connector 300 and the seat body 100.

[0045] Then, the armrest mounting portion 220 of the armrest component 200 is aligned with the rear side of the connector 300, and the lower mounting holes 330 and 241 of the armrest are aligned. The second fixing screw 420 is then inserted from bottom to top along the extension lines of the lower mounting holes 330 and 241, completing the splicing of the armrest component 200 and the seat body 100. Thus, the splicing of the armrest component 200 and the seat body 100 is completed.

[0046] Reference Figure 3 , Figure 4 The seat body 100 and the armrest 200 are connected by a connector 300. The structural features of the connector 300 can be used to improve the stability of the connection between the seat body 100 and the armrest 200. In particular, the connector 300 can increase the contact area between the armrest 200 and the connector 300, which is equivalent to providing greater upward support for the armrest 200, making the armrest 200 more stable and reliable.

[0047] Reference Figure 5 , Figure 6 Since the first fixing screw 410 is inclined to the upper front side along the extension direction of the second protrusion mounting hole 312 and the first protrusion mounting hole 141 to splice the connector 300 and the seat body 100, compared with the original horizontal mounting screw design, the first fixing screw 410 is more reasonably stressed, making the first fixing screw 410 less likely to loosen, thereby ensuring that the connector 300 and the seat body 100 can be firmly connected even after long-term operation.

[0048] Reference Figure 7 , Figure 8 Since the second fixing screw 420 is inserted from bottom to top along the extension direction of the lower mounting hole 330 of the connector and the lower mounting hole 241 of the armrest to splice the armrest component 200 and the seat body 100, the screw hole of the second fixing screw 420 can be set on the lower side of the armrest mounting part 220 and hidden, making the armrest component 200 and even the entire seat structure more beautiful without affecting the assembly of the armrest component 200.

[0049] In some embodiments of the present invention, the shape, size, and material of the seat body 100 and the armrest 200 can be determined according to the design requirements of the entire seat structure. For example, the outer surface of the seat body 100 can be covered with leather material, and the armrest extension 210 of the armrest 200 can be covered with leather material, and so on.

[0050] In some embodiments of the present invention, the connector 300 may be made of rigid plastic.

[0051] In some embodiments of the present invention, reference is made to... Figure 9 The seat body 100 also includes a seat cushion 110, which is located under the seat body 100, and people can sit on the seat cushion 110.

[0052] In some specific embodiments of the present invention, the seat cushion 110 and the backrest 120 of the seat body 100 are integrally formed.

[0053] In some embodiments of the present invention, reference is made to... Figure 10 , Figure 11 The backrest panel 120 has a backrest panel mounting recess 130 on its rear side. The first protrusion 140 is located in the backrest panel mounting recess 130. The front side of the connector 300, as the front part 310 of the connector, is inserted into the backrest panel mounting recess 130. This increases the contact and fixing area between the rear side of the backrest panel 120 and the front side of the connector 300, making the connection between the connector 300 and the seat body 100 more stable and reliable.

[0054] In some embodiments of the present invention, a first alignment hole 131 is provided in the backrest mounting recess 130, and a first alignment plug 313 is provided on the front part 310 of the connector. The first alignment plug 313 is inserted into the first alignment hole 131, which can further improve the connection stability between the connector 300 and the seat body 100.

[0055] In a further embodiment of the present invention, the extension direction of the first alignment plug 313 and the first alignment hole 131 is the same as the extension direction of the second protrusion mounting hole 312 and the first protrusion mounting hole 141.

[0056] In some embodiments of the present invention, a second alignment plug 132 is provided within the backrest mounting recess 130. The second alignment plug 132 is connected to the outer wall of the first protrusion 140. A second alignment groove 314 is provided on the front part 310 of the connector, and the second alignment plug 132 is inserted into the second alignment groove 314. This further improves the connection stability between the connector 300 and the seat body 100. The connection between the second alignment plug 132 and the outer wall of the first protrusion 140 is equivalent to the second alignment plug 132 serving as a reinforcing rib structure to improve the structural strength of the first protrusion 140.

[0057] In a further embodiment of the present invention, the second alignment plug 132 is also connected to the inner side wall and bottom wall of the backrest mounting recess 130, that is, the second alignment plug 132 is connected to the backrest mounting recess 130 and the first protrusion 140, which can further improve the structural strength of the second alignment plug 132 and the first protrusion 140.

[0058] In some embodiments of the present invention, a first protrusion 140 is provided with a first protrusion 142 mating surface, a first protrusion mounting hole 141 is located on the first protrusion 142 mating surface, a second protrusion 311 is provided with a second protrusion mating surface 315, and a second protrusion mounting hole 312 is located on the second protrusion mating surface 315. That is, when the connector 300 is installed on the seat body 100, the first protrusion mounting hole 141 and the second protrusion mounting hole 312 are aligned, and the first protrusion 142 mating surface of the first protrusion 140 abuts against the second protrusion mating surface 315 of the second protrusion 311. This ensures that the fixation between the first protrusion 140 and the second protrusion 311 is more reliable.

[0059] In some specific embodiments of the present invention, the first protrusion mounting hole 141 is perpendicular to the mating surface of the first protrusion 142, and the second protrusion mounting hole 312 is perpendicular to the mating surface 315 of the second protrusion. Therefore, the mating surface of the first protrusion 142 and the mating surface of the second protrusion 315 are mating surface structures that are inclined from the rear upper side to the front lower side.

[0060] In some specific embodiments of the present invention, the mating surface of the first protrusion 142 and the mating surface of the second protrusion 315 can be a plane or a curved surface.

[0061] In some embodiments of the present invention, there are at least two first protrusions 140 on the backrest panel 120, and the number of second protrusions 311 on the connector 300 is the same as the number of first protrusions 140. The distribution direction of each first protrusion 140 and each second protrusion 311 corresponds to the extension direction of the armrest mounting portion 220.

[0062] In a further embodiment of the present invention, the armrest mounting part 220 is a vertical structure, and each of the first protrusions 140 and each of the second protrusions 311 are arranged in a top-to-bottom direction.

[0063] In some embodiments of the present invention, the handrail extension 210 and the handrail mounting part 220 of the handrail component 200 are integrally formed structures.

[0064] In some embodiments of the present invention, a connector side retaining rib 316 is provided on the outer side wall of the front part 310 of the connector, and the connector side retaining rib 316 can lock the inner side wall of the backrest mounting recess 130 on the backrest panel 120.

[0065] In some specific embodiments of the present invention, the connector side retaining ribs 316 are located on the outer side walls on the left and right sides of the front part 310 of the connector.

[0066] In some embodiments of the present invention, reference is made to... Figure 12 , Figure 13 A connector recess 321 is provided on the rear side of the connector 300. The first fixing screw 410 passes through the connector recess 321, the second protrusion mounting hole 312, and the first protrusion mounting hole 141 in sequence to connect the connector 300 to the seat body 100. The third protrusion 240 of the armrest 200 extends into the connector recess 321. The lower side of the connector recess 321 is the connector base plate 322. The lower mounting hole 330 of the connector is located on the connector base plate 322 and communicates with the connector recess 321, ensuring that the second fixing screw 420 can pass through the lower mounting hole 330 of the connector and connect with the lower mounting hole 241 of the third protrusion 240, making the connection between the armrest 200 and the connector 300 more stable and reliable. The first fixing screw 410 passes through the connector recess 321, the second protrusion mounting hole 312, and the first protrusion mounting hole 141 in sequence to connect the connector 300 to the seat body 100. This is equivalent to using the connector recess 321 so that the first fixing screw 410 does not need to protrude from the rear side of the connector 300, making the connector 300 structure more compact.

[0067] In some embodiments of the present invention, a handrail mounting recess 230 is provided on the front side of the handrail mounting portion 220, and the rear side of the connector 300, as the rear part 320 of the connector, is inserted into the handrail mounting recess 230, thereby making the connection between the handrail component 200 and the connector 300 more stable and reliable.

[0068] In some embodiments of the present invention, an upper buckle recess 231 is provided on the upper side of the recess 230 of the armrest mounting part, and an upper buckle plate 323 is provided on the upper side of the rear part 320 of the connector. The upper buckle plate 323 is inserted into the upper buckle recess 231, so that the upper buckle plate 323 can push upward against the upper buckle recess 231, thereby making the connection between the armrest part 200 and the connector 300 more stable and reliable.

[0069] In some embodiments of the present invention, third alignment plugs 232 are provided on the left and right sides of the recess 230 of the armrest mounting part, and third alignment grooves 324 are provided on the left and right sides of the rear part 320 of the connector, so as to make the connection between the armrest part 200 and the connector 300 more stable and reliable.

[0070] In some embodiments of the present invention, the lower side of the armrest mounting recess 230 has a lower opening. When the armrest component 200 is installed on the connector 300, the lower opening of the armrest mounting recess 230 coincides with the connector base plate 322 on the lower side of the connector 300, and the second fixing screw 420 can pass through the connector lower mounting hole 330 on the connector base plate 322 and connect with the armrest lower mounting hole 241 on the third protrusion 240.

[0071] An office chair according to a second aspect embodiment of the present invention includes an armrest connection structure according to the first aspect embodiment described above, i.e., the armrest connection structure described above is suitable for office chairs. Office chairs often require long hours of work, making the armrest connection structure described above suitable.

[0072] A lounge chair according to a third aspect embodiment of the present invention includes an armrest connecting structure according to the first aspect embodiment described above; that is, the armrest connecting structure described above is also applicable to lounge chairs. The armrest structures of lounge chairs are often quite diverse, and the armrest connecting structure described above can adapt to various armrest shapes.

[0073] According to a fourth aspect embodiment of the present invention, a gaming chair includes an armrest connection structure according to the first aspect embodiment described above; that is, the armrest connection structure described above is also applicable to gaming chairs. The armrest structures of gaming chairs are often quite diverse, and the armrest connection structure described above can adapt to various armrest shapes.

[0074] The various seats according to the above embodiments of the present invention, by adopting the above-described armrest connection structure, facilitate the connection and installation of the armrest structure, realize the convenient design of armrest structure installation, and improve the durability of the armrest, thereby enhancing the user experience.

[0075] Other configurations and operations of the office chairs according to embodiments of the present invention, as well as various seats according to other embodiments, are known to those skilled in the art and will not be described in detail here.

[0076] The following is for reference. Figure 1 and Figure 2 The handrail connection structure according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the invention in any specific way.

[0077] like Figure 1 and Figure 2 As shown, the armrest connection structure of this embodiment includes a seat body 100, two armrest pieces 200, and two connectors 300. The seat body 100 and the connectors 300 are fixedly connected by a first fixing screw 410, and the armrest pieces 200 and the connectors 300 are fixedly connected by a second fixing screw 420.

[0078] The seat body 100 includes a seat cushion 110 and a backrest 120. The backrest 120 is provided with a backrest mounting recess 130, and the backrest mounting recess 130 is provided with a first alignment hole 131, a second alignment insert 132 and a first protrusion 140. The first protrusion 140 is provided with a first protrusion mounting hole 141 and a mating surface for the first protrusion 142.

[0079] The handrail component 200 includes a handrail extension 210 and a handrail mounting part 220. The handrail mounting part 220 is provided with a handrail mounting part recess 230. The handrail mounting part recess 230 is provided with an upper buckle recess 231, a third alignment plug 232 and a third protrusion 240. The third protrusion 240 is provided with a handrail lower mounting hole 241 and a third protrusion mating surface 242.

[0080] The connector 300 includes a front portion 310 and a rear portion 320. The front portion 310 is provided with a second protrusion 311, a second protrusion mounting hole 312, a first alignment insert 313, a second alignment groove 314, a second protrusion mating surface 315, and a side retaining rib 316. The rear portion 320 is provided with a connector recess 321, a connector base plate 322, an upper snap plate 323, a third alignment groove 324, and a lower mounting hole 330.

[0081] The first fixing screw 410 passes through the second protrusion mounting hole 312 and the first protrusion mounting hole 141 in sequence to connect the connector to the seat body 100. The second fixing screw 420 passes through the lower mounting hole 330 of the connector and the lower mounting hole 241 of the armrest in sequence from bottom to top to connect the connector 300 to the armrest 200.

[0082] According to the armrest connection structure of the present invention, at least the following effects can be achieved by the following arrangement: the seat body 100 and the armrest 200 are connected by a connector 300, which can improve the connection stability between the seat body 100 and the armrest 200 by utilizing the structural characteristics of the connector 300. In particular, the connector 300 can increase the contact and fixing area between the armrest 200 and the connector 300, which is equivalent to providing a greater upward support force for the armrest 200, making the armrest 200 more stable and reliable; the structure of the seat body 100, the armrest 200 and the connector 300 is relatively simple, and it is easier to manufacture each part separately, which can reduce the difficulty of seat production and process requirements; the first fixing screw 410 is along the mounting hole 3 of the second protrusion. 12. The extension line of the first protrusion mounting hole 141 is inclined towards the upper front side to splice the connector 300 and the seat body 100. Compared with the original horizontal mounting screw design, the force of the first fixing screw 410 is more reasonable, making the first fixing screw 410 less likely to loosen, thus ensuring that the connector 300 and the seat body 100 can be firmly connected even after long-term operation. The second fixing screw 420 is spliced ​​from bottom to top along the extension line of the lower mounting hole 330 of the connector and the lower mounting hole 241 of the armrest to splice the armrest 200 and the seat body 100. This allows the screw hole of the second fixing screw 420 to be hidden under the armrest mounting part 220, making the armrest 200 and even the entire seat structure more aesthetically pleasing without affecting the assembly of the armrest 200.

[0083] In the description of this specification, references to terms such as "some embodiments" or "as one might imagine" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A handrail connection structure, characterized in that, include: The seat body (100) includes a backrest panel (120) with a rear side. A first protrusion (140) is provided on the rear side of the backrest panel (120). The first protrusion (140) has a first protrusion mounting hole (141) facing the rear-lower direction. The armrest component (200) includes an armrest mounting part (220) and an armrest extension part (210). The armrest mounting part (220) is connected to the rear side of the backrest panel (120). A third protrusion (240) is provided on the front side of the armrest mounting part (220). A lower armrest mounting hole (241) is provided on the lower side of the third protrusion (240). The armrest extension part (210) extends forward. A connector (300) is connected between the backrest panel (120) and the armrest mounting part (220). A second protrusion (311) is provided on the front side of the connector (300). The second protrusion (311) has a second protrusion mounting hole (312). The second protrusion mounting hole (312) faces the rear-lower direction. A first fixing screw (410) passes through the second protrusion mounting hole (312) and the first protrusion mounting hole (141) in sequence to connect the connector to the seat body (100). A lower mounting hole (330) is provided on the lower side of the connector (300). A second fixing screw (420) passes through the lower mounting hole (330) and the lower mounting hole (241) of the armrest in sequence from bottom to top to connect the connector (300) to the armrest part (200).

2. The handrail connection structure according to claim 1, characterized in that, The backrest panel (120) has a backrest panel mounting recess (130) on its rear side. The first protrusion (140) is located in the backrest panel mounting recess (130). The front side of the connector (300) is inserted into the backrest panel mounting recess (130) as the front part (310) of the connector.

3. The handrail connection structure according to claim 2, characterized in that, The backrest mounting recess (130) is provided with a first alignment hole (131), and the front part (310) of the connector is provided with a first alignment plug (313), which is inserted into the first alignment hole (131).

4. The handrail connection structure according to claim 2, characterized in that, The backrest mounting recess (130) is provided with a second alignment plug (132), which is connected to the outer wall of the first protrusion (140). The front part (310) of the connector is provided with a second alignment groove (314), and the second alignment plug (132) is inserted into the second alignment groove (314).

5. The handrail connection structure according to claim 1, characterized in that, There are at least two first protrusions (140) on the backrest (120), and the number of second protrusions (311) on the connector (300) is the same as the number of first protrusions (140).

6. The handrail connection structure according to claim 1, characterized in that, The connector (300) has a connector recess (321) on its rear side. The first fixing screw (410) passes through the connector recess (321), the second protrusion mounting hole (312), and the first protrusion mounting hole (141) in sequence to connect the connector (300) to the seat body (100). The third protrusion (240) of the armrest (200) extends into the connector recess (321). The connector base plate (322) is located on the connector base plate (322). The connector lower mounting hole (330) is located on the connector base plate (322) and communicates with the connector recess (321).

7. The handrail connection structure according to claim 1, characterized in that, The front side of the handrail mounting part (220) is provided with a handrail mounting part recess (230), and the rear side of the connector (300) is inserted into the handrail mounting part recess (230) as the rear part of the connector (320).

8. The handrail connection structure according to claim 7, characterized in that, The upper side of the recess (230) of the armrest mounting part is provided with an upper buckle recess (231), and the upper side of the rear part (320) of the connector is provided with an upper buckle plate (323), and the upper buckle plate (323) is inserted into the upper buckle recess (231).

9. The handrail connection structure according to claim 7, characterized in that, The left and right sides of the recess (230) of the armrest mounting part are provided with third alignment plugs (232), and the left and right sides of the rear part (320) of the connector are provided with third alignment grooves (324). The third alignment plugs (232) are inserted into the third alignment grooves (324).

10. An office chair, characterized in that, Includes the handrail connection structure according to any one of claims 1 to 9.

Images