Armrest connecting structure and office chair with same

Abstract

The invention discloses an armrest connecting structure and an office chair with the armrest connecting structure, and relates to the technical field of chairs, the armrest connecting structure comprises a chair main body, the chair main body comprises a backrest plate on the rear side, the rear side of the backrest plate is provided with a first convex part, and the first convex part is provided with a first convex part mounting hole; the handrail piece comprises a handrail mounting part and a handrail extending part, a third convex part is arranged on the front side of the handrail mounting part, and a handrail lower mounting hole is formed in the lower side of the third convex part; the connecting piece is connected between the backrest plate and the armrest mounting part, a second convex part is arranged on the front side of the connecting piece, and a second convex part mounting hole is formed in the second convex part; the seat main body is connected with the armrest piece through the connecting piece, so that the connecting stability of the armrest piece can be improved; the first fixing screws are obliquely connected in a penetrating mode to splice the connecting piece and the seat body, stress of the first fixing screws is more reasonable, the first fixing screws are not prone to loosening, and it is guaranteed that the connecting piece and the seat body can be firm enough after working for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of seats, and in particular to an armrest connection structure and an office chair having the same. Background Art

[0002] At present, many seats are equipped with armrest structures to improve the comfort of people when sitting in the seats. Since the armrest is a protruding structure, the armrest structure is usually manufactured separately from the main structure of the seat, and then combined together to form a complete seat product. The armrest structure and the main structure of the seat are generally connected by horizontally inserted screws, which not only exposes the screws to the outside and affects the appearance, but also the screws will become loose after long-term use, resulting in an unstable armrest structure. Summary of the invention

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

[0004] According to the first aspect of the present invention, the armrest connection structure of the embodiment comprises: a seat body, comprising a backrest plate at a rear side, a first protrusion is arranged at the rear side of the backrest plate, the first protrusion has a first protrusion mounting hole, and the first protrusion mounting hole faces the rear lower side direction; an armrest member, comprising an armrest mounting portion and an armrest extension portion, the armrest mounting portion is connected to the rear side of the backrest plate, a third protrusion is arranged at the front side of the armrest mounting portion, an armrest lower mounting hole is arranged at the lower side of the third protrusion, and the armrest extension portion extends forward; a connecting member, connected between the backrest plate and the armrest mounting portion, a second protrusion is arranged at the front side of the connecting member, the second protrusion has a second protrusion mounting hole, and the second protrusion mounting hole faces the rear lower side direction, a first fixing screw passes through the second protrusion mounting hole and the first protrusion mounting hole in sequence to connect the connecting member to the seat body, a connecting member lower mounting hole is arranged at the lower side of the connecting member, and a second fixing screw passes through the connecting member lower mounting hole and the armrest lower mounting hole in sequence from bottom to top to connect the connecting member to the armrest member.

[0005] According to some embodiments of the present invention, a backboard mounting recess is provided on the rear side of the backboard, the first protrusion is located in the backboard mounting recess, and the front side of the connector is inserted into the backboard 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 plate, and a first alignment plug-in is provided on the front portion of the connecting member, and the first alignment plug-in is inserted into the first alignment hole.

[0007] According to some embodiments of the present invention, a second alignment plug-in is provided in the backrest board mounting recess, the second alignment plug-in is connected to the outer wall of the first protrusion, a second alignment groove is provided on the front part of the connecting piece, and the second alignment plug-in 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 plate, and the number of the second protrusions on the connecting member is the same as the number of the first protrusions.

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

[0010] According to some embodiments of the present invention, an armrest mounting portion recess is provided at the front side of the armrest mounting portion, and the rear side of the connector as the rear part of the connector is inserted into the armrest mounting portion recess.

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

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

[0013] The handrail connection structure according to the embodiment of the present invention has at least the following technical effects:.

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

[0015] The office chair according to the embodiment of the present invention has at least the following beneficial effects: the seat body and the armrest are connected by a connecting piece, which can improve the connection stability of the armrest, and the structure of the seat body, the armrest and the connecting piece is relatively simple, and the manufacturing is easier, which can reduce the difficulty and process requirements of the seat production. The first fixing screw is obliquely connected to splice the connecting piece and the seat body, and the force on the first fixing screw is more reasonable, so that the first fixing screw is not easy to loosen, ensuring that the connecting piece and the seat body can work firmly enough for a long time. The second fixing screw is connected from bottom to top to splice the armrest and the seat body, so that the screw hole position of the second fixing screw can be set on the lower side of the armrest mounting part and hidden, so that the armrest and even the entire seat structure are more beautiful without affecting the assembly of the armrest.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a three-dimensional diagram of the handrail connection structure of the present invention; Figure 2 It is a structural exploded view of the handrail connection structure of the present invention; Figure 3 It is a connection schematic diagram of the handrail connection structure of the present invention; Figure 4 yes Figure 3 A partial enlarged view of area A Figure 5 is a schematic diagram of the assembly process of the connector of the present invention; Figure 6 A partial enlarged view of area B in the middle Figure 7 It is a schematic diagram of the assembly process of the armrest member of the present invention; Figure 8 A partial enlarged view of the middle C area Fig. 9 is a three-dimensional diagram of the seat body of the present invention; Fig.10 yes Fig. 9 A partial enlarged view of the D area in the middle; Fig.11 is a three-dimensional diagram of a connecting member in the present invention; Fig.12 is a three-dimensional diagram of the connecting member of the present invention from another angle; Fig.13 It is a three-dimensional diagram of the armrest mounting portion of the present invention.

[0017] Reference numerals: The seat body 100, the cushion plate 110, the backrest plate 120, the backrest plate mounting recess 130, the first alignment hole 131, the second alignment plug-in 132, the first convex portion 140, the first convex portion mounting hole 141, and the first convex portion docking surface 142; the armrest member 200, the armrest extension 210, the armrest mounting portion 220, the armrest mounting portion recess 230, the upper buckle recess 231, the third alignment plug-in 232, the third convex portion 240, the armrest lower mounting hole 241, the third convex alignment plug-in Joint 242; connector 300, connector front portion 310, second protrusion 311, second protrusion mounting hole 312, first alignment plug-in 313, second alignment groove 314, second protrusion docking surface 315, connector side clamp 316, connector rear portion 320, connector recess 321, connector bottom plate 322, upper snap plate 323, third alignment groove 324, connector lower mounting hole 330; first fixing screw 410, second fixing screw 420. DETAILED DESCRIPTION

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In the description of the present invention, the meaning of "a plurality" is more than two, and "greater than", "less than", "exceed" etc. are understood to exclude the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0022] Reference below Figure 1 and Figure 2 A handrail connection structure according to an embodiment of the present invention is described.

[0023] like Figure 1 and Figure 2 As shown, the armrest connection structure according to the embodiment of the present invention includes a seat body 100 , an armrest member 200 and a connection member 300 .

[0024] Reference Figure 2 , Figure 3 The seat body 100 includes a backrest board 120 at the rear side, and a first protrusion 140 is arranged at the rear side of the backrest board 120, and the first protrusion 140 has a first protrusion mounting hole 141, and the first protrusion mounting hole 141 faces the rear lower side direction; the armrest member 200 includes an armrest mounting portion 220 and an armrest extension portion 210, and the armrest mounting portion 220 is connected to the rear side of the backrest board 120, and a third protrusion 240 is arranged at the front side of the armrest mounting portion 220, and an armrest lower mounting hole 241 is arranged at the lower side of the third protrusion 240, and the armrest extension portion 210 extends forward; the connecting member 300 is connected to the backrest board 1 20 and the armrest mounting portion 220, a second protrusion 311 is arranged on the front side of the connecting member 300, and the second protrusion 311 has a second protrusion mounting hole 312, and the second protrusion mounting hole 312 faces the rear lower side direction, and 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 connecting member to the seat body 100, and a connecting member lower mounting hole 330 is arranged on the lower side of the connecting member 300, and the second fixing screw 420 passes through the connecting member lower mounting hole 330 and the armrest lower mounting hole 241 in sequence from bottom to top to connect the connecting member 300 to the armrest member 200.

[0025] For example, Figure 1 , Figure 2 and Figure 3 As shown, the seat body 100 includes a backrest board 120 at the rear side, and the backrest board 120 is relatively fixed. A first convex portion 140 is arranged at the rear side of the backrest board 120, and the first convex portion 140 has a first convex portion mounting hole 141, and the first convex portion mounting hole 141 faces the rear lower side direction, that is, the extension direction line of the first convex portion mounting hole 141 faces the rear lower side direction.

[0026] The armrest member 200 includes an armrest mounting portion 220 and an armrest extension portion 210, and the armrest member 200 is relatively fixed as a whole. The armrest mounting portion 220 is connected to the rear side of the backrest plate 120, that is, the armrest member 200 is connected to the backrest plate 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 lower mounting hole 241 is provided on the lower side of the third protrusion 240. The armrest extension portion 210 extends forward, and after people sit on the seat body 100, they can put their hands on the armrest extension portion 210 or hold the armrest extension portion 210.

[0027] The connecting member 300 is connected between the backrest plate 120 and the armrest mounting portion 220. A second protrusion 311 is provided on the front side of the connecting member 300. The second protrusion 311 has a second protrusion mounting hole 312. The second protrusion mounting hole 312 faces the rear lower side, that is, the extension direction line of the second protrusion mounting hole 312 is also toward the rear lower side, the same as the extension direction line of the first protrusion mounting hole 141. 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 connecting member 300 with the seat body 100, that is, the first fixing screw 410 is installed along the extension direction line of the second protrusion mounting hole 312 and the first protrusion mounting hole 141. In this way, the splicing work of the connecting member 300 and the seat body 100 is completed.

[0028] The lower side of the connector 300 is provided with a connector lower mounting hole 330. The second fixing screw 420 passes through the connector lower mounting hole 330 and the armrest lower mounting hole 241 from bottom to top in sequence to connect the connector 300 with the armrest 200, that is, the second fixing screw 420 is installed along the extending direction line of the connector lower mounting hole 330 and the armrest lower mounting hole 241. In this way, the splicing work of the connector 300 and the armrest 200 is completed, and then the splicing work of the armrest 200 and the seat body 100 is completed.

[0029] In actual work, take the example of configuring an armrest 200 on the left and right sides of the seat body 100, referring to Figure 4 First, align the front side of the connecting member 300 with the rear side of the backrest plate 120 of the seat body 100, and align the second convex mounting hole 312 and the first convex mounting hole 141, and then install the first fixing screw 410 along the extension direction line of the second convex mounting hole 312 and the first convex mounting hole 141 in an inclined manner toward the upper front side, so as to complete the splicing work of the connecting member 300 and the seat body 100; Then the armrest mounting portion 220 of the armrest member 200 is aligned with the rear side of the connecting member 300, and the lower mounting hole 330 of the connecting member and the lower mounting hole 241 of the armrest are aligned, and then the second fixing screw 420 is installed from bottom to top along the extending direction line of the lower mounting hole 330 of the connecting member and the lower mounting hole 241 of the armrest, completing the splicing work of the armrest member 200 and the seat body 100. In this way, the splicing work of the armrest member 200 and the seat body 100 is completed.

[0030] Reference Figure 3 , Figure 4The seat body 100 and the armrest member 200 are connected by the connecting member 300, and the structural characteristics of the connecting member 300 can be used to improve the connection stability between the seat body 100 and the armrest member 200. In particular, the connecting member 300 can increase the contact and fixing area between the armrest member 200 and the connecting member 300, which is equivalent to providing an additional greater upward supporting force for the armrest member 200, making the armrest member 200 more stable and reliable.

[0031] Reference Figure 5 , Figure 6 Since the first fixing screw 410 is connected along the extension direction line of the second protrusion mounting hole 312 and the first protrusion mounting hole 141 toward the upper front side to splice the connecting piece 300 and the seat body 100, compared with the original horizontal mounting screw design, the force on the first fixing screw 410 is more reasonable, making it difficult for the first fixing screw 410 to loosen, thereby ensuring that the connecting piece 300 and the seat body 100 can be firmly enough to work for a long time.

[0032] Reference Figure 7 , Figure 8 Since the second fixing screw 420 is passed from bottom to top along the extension direction line of the lower mounting hole 330 of the connecting member and the lower mounting hole 241 of the armrest to splice the armrest member 200 and the seat body 100, the screw hole position of the second fixing screw 420 can be set at the lower side of the armrest mounting portion 220 and hidden, making the armrest member 200 and even the entire seat structure more beautiful without affecting the assembly of the armrest member 200.

[0033] 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.

[0034] In some embodiments of the present invention, the connecting member 300 may be made of hard plastic.

[0035] In some embodiments of the present invention, reference Fig. 9 The seat body 100 also includes a cushion plate 110 , which is located at the lower side of the seat body 100 , and people can sit on the cushion plate 110 .

[0036] In some specific embodiments of the present invention, the seat cushion plate 110 and the backrest plate 120 of the seat body 100 are integrally formed.

[0037] In some embodiments of the present invention, reference Fig.10 , Fig.11A backboard mounting recess 130 is provided on the rear side of the backboard 120, and the first protrusion 140 is located in the backboard mounting recess 130. The front side of the connecting member 300 as the front side part 310 of the connecting member is inserted into the backboard mounting recess 130, so that the contact and fixing area between the rear side of the backboard 120 and the front side of the connecting member 300 can be increased, and the connection between the connecting member 300 and the seat body 100 can be further made more stable and reliable.

[0038] In some embodiments of the present invention, a first alignment hole 131 is provided in the backrest plate mounting recess 130, and a first alignment plug-in 313 is provided on the front side portion 310 of the connector. The first alignment plug-in 313 is inserted into the first alignment hole 131, thereby further improving the connection stability between the connector 300 and the seat body 100.

[0039] In a further embodiment of the present invention, the extension direction of the first alignment plug-in 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 .

[0040] In some embodiments of the present invention, a second alignment plug-in 132 is provided in the backrest plate mounting recess 130, and the second alignment plug-in 132 is connected to the outer side wall of the first protrusion 140. A second alignment groove 314 is provided on the front side portion 310 of the connector, and the second alignment plug-in 132 is inserted into the second alignment groove 314, so that the connection stability between the connector 300 and the seat body 100 can be further improved. The second alignment plug-in 132 is connected to the outer side wall of the first protrusion 140, which is equivalent to the second alignment plug-in 132 being used as a reinforcing rib structure to improve the structural strength of the first protrusion 140.

[0041] In a further embodiment of the present invention, the second alignment plug-in 132 is also connected to the inner side wall and the bottom wall of the backrest board mounting recess 130, that is, the second alignment plug-in 132 is connected to the backrest board mounting recess 130 and the first protrusion 140, which can further improve the structural strength of the second alignment plug-in 132 and the first protrusion 140.

[0042] In some embodiments of the present invention, a first protrusion 142 docking surface is provided on the first protrusion 140, and the first protrusion mounting hole 141 is located on the first protrusion 142 docking surface; a second protrusion docking surface 315 is provided on the second protrusion 311, and the second protrusion mounting hole 312 is located on the second protrusion docking surface 315, that is, when the connecting member 300 is installed on the seat body 100, the first protrusion mounting hole 141 is aligned with the second protrusion mounting hole 312, and the first protrusion 142 docking surface of the first protrusion 140 is abutted against the second protrusion docking surface 315 of the second protrusion 311, thereby ensuring that the first protrusion 140 and the second protrusion 311 are fixed more reliably.

[0043] In some specific embodiments of the present invention, the first protrusion mounting hole 141 is perpendicular to the first protrusion docking surface 142, and the second protrusion mounting hole 312 is perpendicular to the second protrusion docking surface 315. Therefore, the first protrusion docking surface 142 and the second protrusion docking surface 315 are docking surface structures inclined from the upper rear side to the lower front side.

[0044] In some specific embodiments of the present invention, the first protrusion 142 docking surface and the second protrusion docking surface 315 may be a flat surface or a curved surface.

[0045] In some embodiments of the present invention, there are at least two first protrusions 140 on the backrest plate 120, and the number of second protrusions 311 on the connecting member 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.

[0046] In a further embodiment of the present invention, the armrest mounting portion 220 is a vertical structure, and each first protrusion 140 and each second protrusion 311 are arranged and distributed from top to bottom.

[0047] In some embodiments of the present invention, the armrest extension portion 210 and the armrest mounting portion 220 of the armrest member 200 are an integrally formed structure.

[0048] In some embodiments of the present invention, a connector side clamp 316 is provided on the outer side wall of the connector front portion 310 , and the connector side clamp 316 can clamp the inner side wall position of the backrest board installation recess 130 on the backrest board 120 .

[0049] In some specific embodiments of the present invention, the connecting member side clamping ribs 316 are located on the outer side walls on the left and right sides of the connecting member front portion 310 .

[0050] In some embodiments of the present invention, reference Fig.12 , Fig.13The connector 300 is provided with a connector recess 321 at the rear side, and 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 member 200 extends into the connector recess 321, and the lower side of the connector recess 321 is the connector bottom plate 322. The connector lower mounting hole 330 is located on the connector bottom plate 322, and the connector lower mounting hole 330 is connected with the connector recess 321, ensuring that the second fixing screw 420 can pass through the connector lower mounting hole 330 and connect with the armrest lower mounting hole 241 of the third protrusion 240, so that the connection between the armrest member 200 and the connector 300 is 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, which is equivalent to utilizing 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.

[0051] In some embodiments of the present invention, an armrest mounting portion recess 230 is provided on the front side of the armrest mounting portion 220, and the rear side of the connecting member 300 as the rear side portion 320 of the connecting member is inserted into the armrest mounting portion recess 230, further making the connection between the armrest member 200 and the connecting member 300 more stable and reliable.

[0052] In some embodiments of the present invention, an upper snap recess 231 is provided on the upper side of the recess 230 of the armrest mounting portion, and an upper snap plate 323 is provided on the upper side of the rear portion 320 of the connector. The upper snap plate 323 is inserted into the upper snap recess 231, so that the upper snap plate 323 can push the upper snap recess 231 upward, further making the connection between the armrest member 200 and the connector 300 more stable and reliable.

[0053] In some embodiments of the present invention, a third alignment plug-in 232 is provided on the left and right sides of the armrest mounting portion recess 230, and a third alignment groove 324 is provided on the left and right sides of the rear portion 320 of the connecting member, further making the connection between the armrest member 200 and the connecting member 300 more stable and reliable.

[0054] In some embodiments of the present invention, the lower side of the armrest mounting portion recess 230 has a lower opening. When the armrest member 200 is installed on the connecting member 300, the lower side opening of the armrest mounting portion recess 230 coincides with the connecting member bottom plate 322 on the lower side of the connecting member 300, and the second fixing screw 420 can pass through the connecting member lower mounting hole 330 on the connecting member bottom plate 322 and connect with the armrest lower mounting hole 241 on the third protrusion 240.

[0055] The office chair according to the second embodiment of the present invention comprises the armrest connection structure according to the first embodiment of the present invention, that is, the armrest connection structure is suitable for office chairs. Office chairs often need to work for a long time and are suitable for the armrest connection structure.

[0056] The leisure chair according to the third aspect of the present invention includes the armrest connection structure according to the first aspect of the present invention, that is, the armrest connection structure is also applicable to the leisure chair. The armrest structure of the leisure chair is often diverse, and the armrest connection structure can adapt to armrest structures of various shapes.

[0057] The gaming chair according to the fourth aspect of the present invention includes the armrest connection structure according to the first aspect of the present invention, that is, the armrest connection structure is also applicable to the gaming chair. The armrest structure of the gaming chair is often diverse, and the armrest connection structure can adapt to various armrest structures of different shapes.

[0058] According to the various seats of the above-mentioned embodiments of the present invention, by adopting the above-mentioned armrest connection structure, the connection and installation of the armrest structure is facilitated, a convenient design for the installation of the armrest structure is achieved, and the durability of the armrest can be improved, thereby enhancing the user experience.

[0059] Other structures and operations of the office chair according to the embodiment of the present invention and various seats in other embodiments are well known to those skilled in the art and will not be described in detail here.

[0060] Reference below Figure 1 and Figure 2 The handrail connection structure according to the embodiment of the present invention is described in detail with a specific embodiment. It is worth noting that the following description is only an exemplary description and is not a specific limitation of the invention.

[0061] like Figure 1 and Figure 2 As shown, the armrest connection structure of the embodiment of the present invention comprises a seat body 100, two armrest members 200 and two connecting members 300. The seat body 100 and the connecting member 300 are fixedly connected by a first fixing screw 410, and the armrest member 200 and the connecting member 300 are fixedly connected by a second fixing screw 420.

[0062] The seat body 100 includes a cushion plate 110 and a backrest plate 120. The backrest plate 120 is provided with a backrest plate mounting recess 130, in which a first alignment hole 131, a second alignment plug-in 132 and a first protrusion 140 are provided, and the first protrusion 140 is provided with a first protrusion mounting hole 141 and a first protrusion 142 docking surface.

[0063] The armrest member 200 includes an armrest extension portion 210 and an armrest mounting portion 220. The armrest mounting portion 220 is provided with an armrest mounting portion recess 230. The armrest mounting portion recess 230 is provided with an upper buckle recess 231, a third alignment plug-in 232 and a third protrusion 240. The third protrusion 240 is provided with an armrest lower mounting hole 241 and a third protrusion docking surface 242.

[0064] The connector 300 includes a connector front portion 310 and a connector rear portion 320. The connector front portion 310 is provided with a second protrusion 311, a second protrusion mounting hole 312, a first alignment plug 313, a second alignment groove 314, a second protrusion docking surface 315, and a connector side clamp 316. The connector rear portion 320 is provided with a connector recess 321, a connector bottom plate 322, an upper buckle plate 323, a third alignment groove 324, and a connector lower mounting hole 330.

[0065] 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, and the second fixing screw 420 passes through the lower connector mounting hole 330 and the lower armrest mounting hole 241 from bottom to top in sequence to connect the connector 300 to the armrest 200.

[0066] According to the armrest connection structure of the embodiment of the present invention, by such a configuration, at least the following effects can be achieved: the seat body 100 and the armrest member 200 are connected by the connecting member 300, and the structural characteristics of the connecting member 300 can be used to improve the connection stability between the seat body 100 and the armrest member 200, especially the connecting member 300 can increase the contact and fixing area between the armrest member 200 and the connecting member 300, which is equivalent to providing an additional greater upward supporting force for the armrest member 200, making the armrest member 200 more stable and reliable; the structure of the seat body 100, the armrest member 200 and the connecting member 300 is relatively simple, and each part is easier to manufacture separately, which can reduce the difficulty and process requirements of the seat production; the first fixing screw 410 is installed along the second convex portion mounting hole 3 12. The extension direction line of the first convex mounting hole 141 is inclined toward the upper front side to connect the connecting piece 300 and the seat body 100. Compared with the original horizontal mounting screw design, the force on the first fixing screw 410 is more reasonable, so that the first fixing screw 410 is not easy to loosen, thereby ensuring that the connecting piece 300 and the seat body 100 can be strong enough to work for a long time; the second fixing screw 420 is connected from bottom to top along the extension direction line of the lower mounting hole 330 of the connecting piece and the lower mounting hole 241 of the armrest to connect the armrest piece 200 and the seat body 100. In this way, the screw hole position of the second fixing screw 420 can be set on the lower side of the armrest mounting part 220 and hidden, so that the armrest piece 200 and even the entire seat structure are more beautiful without affecting the assembly of the armrest piece 200.

[0067] In the description of this specification, the description with reference to the terms "some embodiments" or "it is conceivable that" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0068] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A handrail connection structure, characterized in that: include: The seat body (100) comprises a backrest plate (120) at the rear side, wherein a first convex portion (140) is arranged at the rear side of the backrest plate (120), wherein the first convex portion (140) has a first convex portion mounting hole (141), and the first convex portion mounting hole (141) faces the rear lower side direction; An armrest member (200) comprises an armrest mounting portion (220) and an armrest extension portion (210), wherein the armrest mounting portion (220) is connected to the rear side of the backrest plate (120), a third protrusion (240) is arranged on the front side of the armrest mounting portion (220), an armrest lower mounting hole (241) is arranged on the lower side of the third protrusion (240), and the armrest extension portion (210) extends forward; A connecting member (300) is connected between the backrest plate (120) and the armrest mounting portion (220); a second protrusion (311) is provided on the front side of the connecting member (300); the second protrusion (311) has a second protrusion mounting hole (312); the second protrusion mounting hole (312) faces the rear lower side; 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 connecting member to the seat body (100); a connecting member lower mounting hole (330) is provided on the lower side of the connecting member (300); a second fixing screw (420) passes through the connecting member lower mounting hole (330) and the armrest lower mounting hole (241) in sequence from bottom to top to connect the connecting member (300) to the armrest member (200).

2. The handrail connection structure according to claim 1, characterized in that: A backboard mounting recess (130) is provided on the rear side of the backboard (120), the first protrusion (140) is located in the backboard mounting recess (130), and the front side of the connecting member (300) is inserted into the backboard mounting recess (130) as a connecting member front side portion (310).

3. The handrail connection structure according to claim 2, characterized in that: A first alignment hole (131) is provided in the backrest plate mounting recess (130), a first alignment plug-in unit (313) is provided on the front portion (310) of the connector, and the first alignment plug-in unit (313) is inserted into the first alignment hole (131).

4. The handrail connection structure according to claim 2, characterized in that: A second alignment plug-in (132) is provided in the backrest plate mounting recess (130), the second alignment plug-in (132) is connected to the outer side wall of the first protrusion (140), a second alignment groove (314) is provided on the front side portion (310) of the connecting member, and the second alignment plug-in (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 plate (120), and the number of the second protrusions (311) on the connecting member (300) is the same as the number of the first protrusions (140).

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

7. The handrail connection structure according to claim 1, characterized in that: An armrest mounting portion recess (230) is provided on the front side of the armrest mounting portion (220), and the rear side of the connecting member (300) as the connecting member rear side portion (320) is inserted into the armrest mounting portion recess (230).

8. The handrail connection structure according to claim 7, characterized in that: An upper buckle recess (231) is provided on the upper side of the armrest mounting recess (230), and an upper buckle plate (323) is provided on the upper side of the rear portion (320) of the connector, wherein 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: A third alignment plug-in (232) is provided on the left and right sides of the armrest mounting portion recess (230), and a third alignment groove (324) is provided on the left and right sides of the rear portion (320) of the connector, and the third alignment plug-in (232) is inserted into the third alignment groove (324).

10. An office chair, characterized in that: The invention comprises a handrail connection structure according to any one of claims 1 to 9.

Images