A folding chair

Abstract

The present application relates to the field of furniture, and provides a folding chair, including a first folding bracket, a second folding bracket, a chair back and a seat assembly; the first folding bracket and the second folding bracket are cross-arranged, and a hinge is provided at the intersection for hinged connection; the chair back is mounted on the top of the first folding bracket; the first folding bracket is also provided with a support portion, and the support portion is located between the intersection and the chair back; one side of the seat assembly is movably connected to the support portion, and the other side is movably connected to the top of the second folding bracket; the seat assembly includes a bearing portion, an extension portion and a cushion portion; an insertion groove is provided in the bearing portion, and the extension portion is plugged into the insertion groove; when the extension portion is pulled out along the insertion groove, the bearing space is extended; the cushion portion is located on the outer top surface of the bearing portion to provide a comfortable touch. The present application has the effect of adapting to users of different body shapes.

Description

Technical Field

[0001] The present application relates to the field of furniture, and in particular to a folding chair. Background Art

[0002] Folding chairs are suitable for various places with rest needs, such as homes, bars, restaurants and other environments. Different chair leg lengths are provided according to needs. They also have comfortable seats and back supports, which can provide users with good sitting support. At the same time, they have the ability to fold for easy storage and reduce space occupancy when not in use.

[0003] Although traditional folding chairs provide a folding effect during use, the space of the seat is fixed. When users of different body shapes and ages sit down to rest, it is difficult to provide a support space that is suitable for the user to sit down, resulting in reduced comfort. Summary of the invention

[0004] In order to improve the above-mentioned problems, the present application provides a folding chair.

[0005] The folding chair provided in this application adopts the following technical solution: A folding chair comprises a first folding bracket, a second folding bracket, a chair back and a seat assembly; the first folding bracket and the second folding bracket are cross-arranged, and a hinge is provided at the intersection for hinged connection; the chair back is mounted on the top of the first folding bracket; the first folding bracket is also provided with a support portion, and the support portion is located between the intersection and the chair back; one side of the seat assembly is movably connected to the support portion, and the other side is movably connected to the top of the second folding bracket; the seat assembly comprises a bearing portion, an extension portion and a cushion portion; an insertion groove is provided in the bearing portion, and the extension portion is inserted into the insertion groove; when the extension portion is pulled out along the insertion groove, the bearing space is extended; the cushion portion is located on the outer top surface of the bearing portion to provide a comfortable touch.

[0006] By adopting the above technical solution, when the folding chair needs to be unfolded, the first folding bracket and the second folding bracket are unfolded through the hinge, and at the same time, the seat assembly is synchronously unfolded with the second folding bracket through the support part to form a sitable surface. The user sits on the cushion part, and the cushion part improves the contact feeling of the user's thighs when sitting down. According to the body shape of the user, the extension part is pulled out along the insertion groove to different lengths, extending different bearing areas, so that users of different body shapes can get the bearing area suitable for themselves, thereby improving adaptability and experience comfort.

[0007] Optionally, the stretching part is further provided with a reinforcement frame; the two inner side walls of the reinforcement frame are movably connected to one end of the stretching part away from the insertion groove; the clamping part is provided on the second folding bracket, and the reinforcement frame is clamped with the clamping part.

[0008] By adopting the above technical solution, when the extendable part carries the user, the reinforcing frame is rotated to snap into the snap-in part, so that the extendable part can transfer the force to the second folding bracket to disperse the force of the extendable part, thereby reducing the risk of the extendable part being broken due to excessive force.

[0009] Optionally, the stretching part is further provided with a plurality of adjustment holes spaced at preset distances along the extension direction of the insertion groove; the bottom surface of the bearing part is further provided with a connecting protrusion, and a connecting port is opened on the connecting protrusion; the fixing part passes through the connecting port and is slidably connected to the connecting protrusion; the fixing part is connected to an elastic part, one end of the elastic part is connected to the connecting protrusion, and the other end is connected to the fixing part, and an elastic force is applied to the fixing part in the direction of the stretching part; the fixing part is plugged into any of the adjusting holes under the influence of the elastic force.

[0010] By adopting the above technical solution, the fixed part is acted upon by the elastic force of the elastic part and moves toward the stretching part. When the stretching part is pulled out along the insertion groove, the fixed part presses against the bottom surface of the stretching part. As the stretching part is pulled, until the adjustment hole and the fixed part are docked, the fixed part is inserted into the adjustment hole, so that the stretching part is fixed by the clamping of the fixed part and cannot be further pulled out or retracted into the insertion groove. This makes it convenient for the stretching part to be fixed in position when it is used to provide additional load, and will not be retracted into the insertion groove under pressure.

[0011] Optionally, the adjustment holes are arranged in a plurality of rows along a straight line direction of the slot opening of the insertion slot, and each row is provided with a plurality of holes. The number of the fixing parts is consistent with the number of the adjustment holes in a single row and corresponds one to one.

[0012] By adopting the above technical solution, multiple rows of adjustment holes and multiple fixing parts are set for insertion and fixing, which can increase the stability of the fixing effect of the extension part being clamped by the fixing part after being pulled out, so that when the extension part is moved toward the insertion groove under the action of force, the force can be dispersed to multiple fixing parts for fixation, so as to ensure that the extension part can provide a stable load-bearing effect.

[0013] Optionally, connecting rods are provided between adjacent fixing parts to connect them to each other.

[0014] By adopting the above technical solution, when it is necessary to remove the fixing part from the adjustment hole, only one fixing part or the connecting rod needs to be pulled out simultaneously, so that all the fixing parts can be pulled out synchronously, which improves the convenience of use and allows the fixing part to be retracted more quickly to the clamping state of the adjustment hole. Optionally, the contact surface between the fixing portion and the stretching portion is a semicircular arc surface.

[0015] By adopting the above technical solution, the noise generated by friction when the fixing part contacts the bottom surface of the stretching part under the elastic force of the elastic part can be reduced, and reducing friction can also increase the service life of the fixing part.

[0016] Optionally, the cushion portion includes a first folding cushion and a second folding cushion; the first folding cushion is connected to the top surface of the bearing portion; the first folding cushion and the second folding cushion are sewn to each other, and the sewing point is located on one side of the slot of the insertion groove; when the stretch portion is pulled out along the insertion groove, the second folding cushion is opened along the sewing point and covers the surface of the stretch portion.

[0017] By adopting the above technical solution, the surface of the extension part can also be protected by the second folding cushion, and the comfortable touch of the user when sitting on the extension part is improved. When the extension part is not needed to be pulled out, the second folding cushion is flipped over and covered on the first folding cushion, and the first folding cushion is stacked for use, thereby further increasing the softness of the load-bearing part and making the ride more comfortable.

[0018] Optionally, a limiting portion is further provided on the bearing portion; a limiting hole is provided on the second folding seat cushion, and the second folding seat cushion is buckled with the limiting portion through the limiting hole.

[0019] By adopting the above technical solution, when the second folding seat cushion is buckled on the limiting part through the limiting hole, the second folding seat cushion can be prevented from shifting when folded and placed with the first folding seat cushion, and the placement position of the second folding seat cushion can be stabilized after folding and placing.

[0020] Optionally, the limiting holes are arranged in several rows, and the position of each row corresponds to the position of the adjustment holes; a pulling portion is provided at one end of the extending portion away from the chair back, and when the second folding cushion covers the top surface of the extending portion, the limiting holes are buckled with the pulling portion.

[0021] By adopting the above-mentioned technical scheme, the pulling part can provide a fulcrum for pulling the extension part from the insertion groove, and can also provide a limiting fixed fulcrum for the second folding seat cushion. As the pulling-out length of the extension part is different, the pulling part changes its position following the pulling-out length of the extension part. When the fixing part is inserted into the corresponding adjustment hole, the position of the pulling part is synchronously corresponding to the limiting holes in the corresponding row, so that the corresponding limiting holes of the second folding seat cushion can be sleeved or buckled on the pulling part to limit the second folding seat cushion and prevent the second folding seat cushion from shifting.

[0022] Optionally, the surface of the stretching portion is provided with hook-shaped Velcro, and the second folding cushion is sewn with fur-like Velcro, and the second folding cushion is bonded to the hook-shaped Velcro through the fur-like Velcro.

[0023] By adopting the above technical solution, when the second folding seat cushion is flipped to the stretching portion along the seam with the first folding seat cushion, the second folding seat cushion is bonded to the hook-like Velcro through the hairy Velcro, thereby further improving the stability of the second folding seat cushion and avoiding deviation.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the folding chair needs to be unfolded, the first folding bracket and the second folding bracket are unfolded through the hinge, and at the same time, the seat assembly is synchronously unfolded with the second folding bracket through the support part to form a sitting surface, and the user sits on the cushion part, which improves the touch of the user's thigh when sitting down. According to the body shape of the user, the extension part is pulled out along the insertion groove to different lengths, extending different bearing areas, so that users of different body shapes can all get a suitable bearing area for themselves, improving adaptability and experience comfort; 2. When the extension part carries the user, the reinforcing frame is rotated to snap into the snap-in part, so that the extension part can transfer the force to the second folding bracket to disperse the force of the extension part, thereby reducing the risk of the extension part being broken due to excessive force; 3. The fixed part is acted upon by the elastic force of the elastic part and moves toward the stretching part. When the stretching part is pulled out along the insertion groove, the fixed part abuts against the bottom surface of the stretching part. As the stretching part is pulled out, the adjustment hole and the fixed part are connected, and the fixed part is inserted into the adjustment hole, so that the stretching part is fixed by the clamping of the fixed part and cannot be further pulled out or retracted into the insertion groove. This is convenient for the stretching part to be fixed in position when it is used to provide additional load, and will not be retracted into the insertion groove under pressure; 4. Arranging multiple rows of adjustment holes and multiple fixing parts for insertion and fixing can increase the stability of the fixing effect of the extension part being clamped by the fixing part after being pulled out, so that when the extension part is moved toward the insertion groove under the action of force, the force can be dispersed to multiple fixing parts for fixing, so as to ensure that the extension part can provide a stable load-bearing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the exploded structure of a folding chair in one embodiment of the present application; Figure 2 is a schematic diagram of the three-dimensional structure of a folding chair in some embodiments of the present application; Figure 3 is a schematic diagram of a first front view structure of a folding chair in some embodiments of the present application; Figure 4 is a right side structural schematic diagram of a fixing portion and a connecting rod in some embodiments of the present application; Figure 5 is a schematic diagram of a second front-view stereoscopic structure of a folding chair in some embodiments of the present application; Figure 6is a schematic diagram of the three-dimensional structure of a seat assembly in some embodiments of the present application; The marks in the accompanying drawings are: 1. first folding bracket, 11. supporting part, 2. second folding bracket, 21. clamping part, 3. chair back, 4. seat assembly, 41. bearing part, 411. insertion groove, 412. connecting protrusion, 413. limiting part, 42. stretching part, 421. reinforcement frame, 422. adjustment hole, 423. hook-like Velcro, 43. cushion part, 431. first folding cushion, 432. second folding cushion, 4321. limiting hole, 4322, hairy Velcro, 44. fixing part, 441. connecting rod, 45. elastic part, 46. pulling part, 5. hinge. DETAILED DESCRIPTION

[0026] The following is an explanation of the implementation of the present application by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the information disclosed in the present application. The present application can also be implemented or applied through other different specific implementations, and the details in the present application can also be modified or changed in various ways according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0027] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in a variety of different forms and is not limited to the embodiments described herein.

[0028] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics represented may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they are contradictory.

[0029] In addition, the terms "first" and "second" are only used to indicate the target, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0031] The following is combined with Figure 1 -Attached Figure 6 , further details of this application are given.

[0032] The embodiment of the present application discloses a folding chair.

[0033] A folding chair provides a support point for a user to sit down and rest. The width and height of the folding chair are not limited and are determined according to user or production requirements.

[0034] refer to Figure 1 and Figure 2 As shown, the folding chair includes a first folding bracket 1, a second folding bracket 2, a chair back 3 and a seat assembly 4; the first folding bracket 1 and the second folding bracket 2 are cross-arranged, and a hinge 5 is provided at the intersection. After the first folding bracket 1 and the second folding bracket 2 are hinged by the hinge 5, the first folding bracket 1 and the second folding bracket 2 are unfolded along the intersection through the hinge 5, so that the bottom of the first folding bracket 1 and the second folding bracket 2 form the chair feet of the folding chair to provide support.

[0035] The seat back 3 is mounted on the top of the first folding bracket 1 , and the first folding bracket 1 is longer than the second folding bracket 2 , so that the first folding bracket 1 can provide installation for the seat back 3 and provide support for the user to lean on the seat back 3 when sitting.

[0036] The first folding bracket 1 is also provided with a support portion 11, which is located between the intersection and the seat back 3. The support portion 11 can be a support rod, which provides fixation for both sides of the first folding bracket 1 to ensure that the stability of the first folding bracket 1 is improved when leaning against the seat back 3 and sitting.

[0037] One side of the seat component 4 is movably connected to the support part 11, and the other side is movably connected to the top of the second folding bracket 2. The movable connection method can be to use a U-shaped connecting ring, both ends of the connecting ring are turned outward to form mounting ears, and the mounting ears are provided with mounting holes. A threaded hole is provided at the bottom of the seat component 4. At least two sets of connecting rings are provided, which are respectively mounted on the support part 11 and the top of the second folding bracket 2, and then a number of bolts are used to penetrate the mounting holes and screwed to the threaded holes of the seat component 4 to install the seat component 4 on the support part 11 and the second folding bracket 2. At the same time, the connecting ring can rotate along the support part 11 or the second folding bracket 2 to ensure that the seat component 4 can achieve a folding effect.

[0038] Among them, the top of the second folding bracket 2 can also be movably connected to a U-shaped frame, and the U-shaped frame can further provide a folding effect of the seat assembly 4 to ensure the flatness after folding.

[0039] Among them, reference Figure 1 and Figure 2 As shown, the seat assembly 4 includes a load-bearing portion 41, an extension portion 42 and a cushion portion 43; the load-bearing portion 41 can be a load-bearing box or a load-bearing frame, and the material can be selected from wood, metal or hardened plastic, etc. The selection of the material is determined according to the needs, and the specific material is not limited here.

[0040] The bearing portion 41 has an insertion slot 411 therein, and the stretching portion 42 can be inserted into the insertion slot 411 through the slot opening of the insertion slot 411 and plugged into the insertion slot 411. The stretching portion 42 can be a stretching plate, which can be made of wood, metal, hardened plastic, or other materials.

[0041] When the extension portion 42 is pulled out along the insertion groove 411, the bearing area can be extended. When the user sits on the seat assembly 4, the contact area between the user's thighs and the seat assembly 4 can be increased according to the extension portion 42. Different lengths of the extension portion 42 can be pulled out from the insertion groove 411 according to the user's body shape and riding comfort, thereby ensuring improved adaptability.

[0042] The cushion portion 43 is located on the outer top surface of the bearing portion 41 and is used to improve the comfort of contact between the user and the seat assembly 4. The cushion portion 43 can adopt any cushion structure such as plush pad, leather pad, sponge pad, etc. The specific structure can be determined according to design requirements and budget.

[0043] Specifically, when the folding chair needs to be unfolded, the first folding bracket 1 and the second folding bracket 2 are unfolded through the hinge 5, and at the same time, the seat assembly 4 is synchronously unfolded with the second folding bracket 2 through the support part 11 to form a sitable surface. The user sits on the cushion part 43, and the cushion part 43 improves the contact feeling of the user's thighs when sitting down. According to the user's body shape, the extension part 42 is pulled out along the insertion groove 411 to different lengths, extending different bearing areas, so that users of different body shapes can get a bearing area suitable for themselves, thereby improving adaptability and experience comfort.

[0044] For further reference, Figure 2 and Figure 3 As shown, since the extension part 42 simultaneously bears part of the support, the extension part 42 is also provided with a reinforcement frame 421. The reinforcement frame 421 adopts a U-shaped frame structure, which can provide partial load-bearing for the extension part 42, so that when the extension part 42 carries the user, the force is transferred to the second folding bracket 2 through the reinforcement frame 421, thereby reducing the risk of the extension part 42 being broken due to excessive force.

[0045] The two inner side walls of the reinforcement frame 421 are movably connected to one end of the stretching part 42 away from the insertion groove 411. Referring to the reinforcement frame 421, a rotating shaft or a hinge shaft is set, and the stretching part 42 is provided with a rotating hole. The rotating shaft is located in the rotating hole and can rotate along the rotating hole, so that the reinforcement frame 421 can rotate along the rotating hole when following the stretching part 42 to be pulled out from the insertion groove 411. A clamping part 21 is provided on the second folding bracket 2, and a clamping interface can be opened on the clamping part 21. The reinforcement frame 421 is rotated to the clamping part 21 and is clamped into the clamping interface.

[0046] Among them, when the reinforcement frame 421 rotates along the active connection point, it can be aligned with the stretching part 42, so that after the reinforcement frame 421 and the stretching part 42 are superimposed and overlapped, the size fits the inner wall of the insertion groove 411, that is, it can be just inserted into the insertion groove 411, ensuring that the reinforcement frame 421 can be stored in the insertion groove 411 synchronously with the stretching part 42 when not in use, and can be pulled out of the insertion groove 411 synchronously with the stretching part 42 when needed.

[0047] Among them, reference Figure 3 As shown, several clamping parts 21 may be provided to ensure that when the pulling length of the extension part 42 is different, the reinforcement frame 421 can be adapted to be clamped into the clamping parts 21 of different heights and positions to ensure that the reinforcement frame 421 can provide a stable support effect.

[0048] In some embodiments, reference Figure 3 As shown, the stretching portion 42 is further provided with a plurality of adjustment holes 422 spaced at preset distances along the extending direction of the inserting slot 411 , and the adjustment holes 422 are used to provide a fulcrum when the stretching portion 42 is fixed.

[0049] A connecting protrusion 412 is further provided on the bottom surface of the bearing portion 41 . The connecting protrusion 412 extends away from the chair back 3 , and a connecting opening is formed on the connecting protrusion 412 .

[0050] The fixing portion 44 is penetrated by a connecting port and is slidably connected with the connecting protrusion 412. The fixing portion 44 can adopt a fixing column, which is inserted into the connecting port and can extend along the connecting port toward the insertion groove 411. The connecting port is consistent in size and style with the adjusting hole 422, so it can be inserted into the adjusting hole 422. At the same time, the adjusting hole 422 can adopt a truncated cone-shaped aperture, and the aperture on the side close to the fixing column is larger than the aperture on the side away from the fixing column, so that the fixing column cannot pass through the adjusting hole 422 and can only stay in the adjusting hole 422.

[0051] The fixed part 44 is connected to the elastic part 45, and the elastic part 45 can be a spring. One end of the elastic part 45 is connected to the connecting protrusion 412, and the other end can be wrapped around the fixed part 44 and connected to the fixed part 44. If the fixed part 44 is provided with a protruding ring away from the adjusting hole 422, and the elastic part 45 is connected to the protruding ring, the elastic part 45 can apply an elastic force to the fixed part 44 in the direction of the stretching part 42, so that the fixed part 44 is affected by the elastic force and plugged into any adjusting hole 422.

[0052] Specifically, the fixing portion 44 is acted upon by the elastic force of the elastic portion 45 and moves toward the stretching portion 42. When the stretching portion 42 is pulled out along the insertion groove 411, the fixing portion 44 presses against the bottom surface of the stretching portion 42. As the stretching portion 42 is pulled out, until the adjustment hole 422 is docked with the fixing portion 44, the fixing portion 44 is inserted into the adjustment hole 422, so that the stretching portion 42 is fixed by the clamping of the fixing portion 44 and cannot be further pulled out or retracted into the insertion groove 411. This makes it convenient for the stretching portion 42 to be fixed in position when it is used to provide additional load, and will not be retracted into the insertion groove 411 under pressure.

[0053] A number of adjustment holes 422 are provided on the stretching portion 42 along the extension direction of the insertion groove 411, so that the fixing portion 44 can be inserted into different adjustment holes 422 according to the different lengths of the stretching portion 42 pulled out, so as to fix the stretching portion 42 with different extension lengths. It is necessary to pull the fixing portion 44 away from the stretching portion 42 in advance so that the fixing portion 44 will not be inserted into the adjustment hole 422, and then the stretching portion 42 is pulled out to the required load-bearing length, and the adjustment hole 422 at that location is positioned opposite to the fixing portion 44, and the fixing portion 44 is loosened. The fixing portion 44 can be inserted into the corresponding adjustment hole 422 under the influence of the elastic portion 45 to fix the stretching portion 42.

[0054] Furthermore, several rows of adjustment holes 422 are arranged along the straight direction of the slot opening of the insertion slot 411, that is, the adjustment holes 422 arranged along the extension direction of the insertion slot 411 are a column, and each column is provided with several adjustment holes 422, forming several rows of adjustment holes 422. The number of fixing parts 44 is consistent with the number of adjustment holes 422 in a single row, and corresponds one to one. For example, if the number of adjustment holes 422 in a single row is two, the number of fixing parts 44 is two. When the stretching part 42 moves along the insertion part, the adjustment holes 422 of different columns are switched, so that the fixing part 44 is inserted and fixed according to the position where the adjustment holes 422 of different columns are stretched out.

[0055] Providing multiple rows of adjustment holes 422 and multiple fixing parts 44 for insertion and fixing can increase the stability of the fixing effect of the extension part 42 being clamped by the fixing parts 44 after being pulled out, so that when the extension part 42 is acted upon by force and moves toward the insertion groove 411, the force can be dispersed to the multiple fixing parts 44 for fixing, thereby ensuring that the extension part 42 can provide a stable load-bearing effect.

[0056] Further, refer to Figure 3 and Figure 4 As shown, connecting rods 441 are provided between adjacent fixing parts 44 to connect with each other, and the connecting rods 441 are used to connect adjacent fixing parts 44, so that when it is necessary to take out the fixing part 44 from the adjusting hole 422 to retract the stretching part 42 into the insertion groove 411, only one fixing part 44 or the connecting rod 441 needs to be pulled to simultaneously pull out all the fixing parts 44, thereby improving the convenience of use and allowing the fixing part 44 to be retracted more quickly into the clamping state of the adjusting hole 422.

[0057] Further, refer to Figure 3 or Figure 4 As shown, the contact surface between the fixed portion 44 and the stretch portion 42 is a semicircular arc surface, so that the contact area between the fixed portion 44 and the bottom surface of the stretch portion 42 is small, thereby reducing friction and reducing the noise generated by friction when the fixed portion 44 contacts the bottom surface of the stretch portion 42 under the elastic force of the elastic portion 45. Reducing friction can also increase the service life of the fixed portion 44.

[0058] In some embodiments, reference Figure 5 and Figure 6 As shown, the cushion portion 43 includes a first folding cushion 431 and a second folding cushion 432; the first folding cushion 431 is connected to the top surface of the bearing portion 41, and the connection method of the first folding cushion 431 can be a fixed connection, such as sewing or nailing. Referring to the setting of fixing nails, multiple corner nails of the first folding cushion 431 are fastened to the top surface of the bearing portion 41 to ensure the stability of the first folding cushion 431 when in use and prevent the first folding cushion 431 from being offset due to external force.

[0059] The first folding seat cushion 431 and the second folding seat cushion 432 are sewn to each other, and the sewing point is located on one side of the slot of the insertion slot 411. The first folding seat cushion 431 and the second folding seat cushion 432 can both be made of leather cushions, sponge cushions, latex cushions, etc., and the outer surface is wrapped with a layer of connecting cloth or cloth cover, and the connecting parts or cloth covers are connected by sewing. At the same time, the first folding seat cushion 431 is fixed on the bearing part 41, so it cannot be moved, while the second folding seat cushion 432 has no fixing requirement and can be folded through the sewing point.

[0060] When the extension portion 42 is pulled out along the insertion groove 411, the second folding cushion 432 is opened along the sewing point and covers the surface of the extension portion 42, so that the surface of the extension portion 42 can also be protected by the second folding cushion 432, and the comfortable touch of the user when sitting on the extension portion 42 is improved. When the extension portion 42 is not needed to be pulled out, the second folding cushion 432 is flipped over and covered on the first folding cushion 431, and the first folding cushion 431 is stacked for use, thereby further increasing the softness of the load-bearing portion 41 and making the ride more comfortable.

[0061] For further reference, Figure 6 As shown, a limiting portion 413 is also provided on the bearing portion 41; a limiting hole 4321 is provided on the second folding cushion 432, and the second folding cushion 432 is buckled with the limiting portion 413 through the limiting hole 4321. The limiting portion 413 can adopt a limiting column, a limiting buckle or a limiting threaded column. For example, when a limiting column is used, the limiting hole 4321 can be sleeved on the limiting column, or when a limiting threaded column is used, a threaded hole is provided on the surface of the bearing portion 41, the limiting hole 4321 is aligned with the threaded hole, and then the limiting threaded column is screwed into it, and a limiting cap is provided at one end of the limiting threaded column away from the threaded hole, and the size of the limiting cap is larger than the limiting hole 4321, so that when the limiting cap is screwed into the threaded hole with the limiting threaded column, the second folding cushion 432 is pressed against the bearing portion 41. Compared with ordinary limiting columns, it can provide a pressing effect, but the convenience of using limiting columns is higher. The specific method to be used needs to be determined according to production needs.

[0062] Furthermore, the limiting holes 4321 are arranged in several rows, and the position of each row corresponds to the position of the adjustment hole 422, so that when the extension portion 42 switches different adjustment holes 422 according to the pulled length, the position of the corresponding limiting hole 4321 changes synchronously.

[0063] A pulling portion 46 is provided at one end of the extension portion 42 away from the chair back 3. When the second folding cushion 432 covers the top surface of the extension portion 42, the limiting hole 4321 is buckled with the pulling portion 46. The pulling portion 46 can adopt a pulling column. The pulling portion 46 can provide a fulcrum for pulling the extension portion 42 from the insertion groove 411, and can also provide a limiting fixed fulcrum for the second folding cushion 432. As the pulled-out length of the extension portion 42 is different, the pulling portion 46 changes its position following the pulled-out length of the extension portion 42. When the fixing portion 44 is inserted into the corresponding adjusting hole 422, the position of the pulling portion 46 is synchronously corresponding to the limiting hole 4321 of the corresponding row, so that the corresponding limiting hole 4321 of the second folding cushion 432 can be sleeved or buckled on the pulling portion 46 to limit the second folding cushion 432 and prevent the second folding cushion 432 from shifting.

[0064] The second folding seat cushion 432 can be folded into several parts, so that when the length of the extension portion 42 is shorter, the second folding seat cushion 432 can be partially folded downward, which will not affect the user's sitting and resting.

[0065] Further, refer to Figure 6 As shown, a hook-like Velcro 423 is provided on the surface of the stretching portion 42, and a hairy Velcro 4322 is sewn on the second folding cushion 432. When the second folding cushion 432 is flipped to the stretching portion 42 along the seam with the first folding cushion 431, the second folding cushion 432 is bonded to the hook-like Velcro 423 through the hairy Velcro 4322, thereby further improving the stability of the second folding cushion 432 and avoiding displacement.

[0066] When the second folding seat cushion 432 and the first folding seat cushion 431 are folded together, the hairy Velcro 4322 of the second folding seat cushion 432 will face upwards. When the user sits down, he or she can sit directly on the hairy Velcro 4322 without feeling awkward and the touch remains comfortable. The surface of the stretching portion 42 is the hook-shaped Velcro 423, which may feel awkward when in contact with the user's skin. Therefore, when the stretching portion 42 is extended, the second folding seat cushion 432 is covered on the stretching portion 42 and the hook-shaped Velcro 423 is covered to make the touch of the stretching portion 42 more comfortable. The hook-shaped Velcro 423 and the hairy Velcro 4322 cannot be switched between installation to affect the comfort.

[0067] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A folding chair, characterized in that: The invention comprises a first folding bracket (1), a second folding bracket (2), a chair back (3) and a seat assembly (4); the first folding bracket (1) and the second folding bracket (2) are arranged crosswise, and a hinge (5) is provided at the intersection for hinge connection; the chair back (3) is mounted on the top of the first folding bracket (1); the first folding bracket (1) is further provided with a support portion (11), and the support portion (11) is located between the intersection and the chair back (3); one side of the seat assembly (4) is connected to the support portion (11) 1) is movably connected, and the other side is movably connected to the top of the second folding bracket (2); the seat assembly (4) comprises a load-bearing portion (41), an extension portion (42) and a cushion portion (43); an insertion groove (411) is provided in the load-bearing portion (41), and the extension portion (42) is plugged into the insertion groove (411); when the extension portion (42) is pulled out along the insertion groove (411), the load-bearing space is extended; the cushion portion (43) is located on the outer top surface of the load-bearing portion (41) to provide a comfortable touch.

2. A folding chair according to claim 1, characterized in that: The stretching portion (42) is further provided with a reinforcement frame (421); two inner side walls of the reinforcement frame (421) are movably connected to an end of the stretching portion (42) away from the insertion groove (411); the second folding bracket (2) is provided with the clamping portion (21), and the reinforcement frame (421) is clamped with the clamping portion (21).

3. A folding chair according to claim 1, characterized in that: The stretchable portion (42) is also provided with a plurality of adjustment holes (422) spaced at a preset distance along the extension direction of the insertion groove (411); the bottom surface of the bearing portion (41) is also provided with a connecting protrusion (412), and the connecting protrusion (412) is provided with a connecting port; the fixing portion (44) passes through the connecting port and is slidably connected to the connecting protrusion (412); the fixing portion (44) is connected with an elastic portion (45), one end of the elastic portion (45) is connected to the connecting protrusion (412), and the other end is connected to the fixing portion (44), and applies an elastic force to the fixing portion (44) in the direction of the stretchable portion (42); the fixing portion (44) is plugged into any of the adjustment holes (422) under the influence of the elastic force.

4. A folding chair according to claim 3, characterized in that: The adjustment holes (422) are arranged in a plurality of rows along the straight line direction of the slot opening of the insertion slot (411), with a plurality of holes arranged in each row. The number of the fixing portions (44) is consistent with the number of the adjustment holes (422) in a single row, and corresponds one to one.

5. A folding chair according to claim 4, characterized in that: Connecting rods (441) are provided between adjacent fixing portions (44) to connect them to each other.

6. A folding chair according to claim 3, characterized in that: The contact surface between the fixing portion (44) and the stretching portion (42) is a semicircular arc surface.

7. A folding chair according to claim 1, characterized in that: The cushion portion (43) comprises a first folding cushion (431) and a second folding cushion (432); the first folding cushion (431) is connected to the top surface of the bearing portion (41); the first folding cushion (431) and the second folding cushion (432) are sewn together, and the sewing point is located on one side of the slot opening of the insertion slot (411); when the stretch portion (42) is pulled out along the insertion slot (411), the second folding cushion (432) is opened along the sewing point and covers the surface of the stretch portion (42).

8. The folding chair according to claim 1, characterized in that: A limiting portion (413) is also provided on the bearing portion (41); a limiting hole (4321) is provided on the second folding seat cushion (432), and the second folding seat cushion (432) is buckled with the limiting portion (413) through the limiting hole (4321).

9. A folding chair according to claim 8, characterized in that: The limiting holes (4321) are arranged in a plurality of rows, and the position of each row corresponds to the position of the adjusting holes (422); a pulling portion (46) is provided at one end of the extending portion (42) away from the chair back (3); when the second folding cushion (432) covers the top surface of the extending portion (42), the limiting holes (4321) are buckled with the pulling portion (46).

10. A folding chair according to any one of claims 7 to 9, characterized in that: The surface of the stretching portion (42) is provided with a hook-shaped Velcro (423), the second folding seat cushion (432) is sewn with a fur-shaped Velcro (4322), and the second folding seat cushion (432) is bonded to the hook-shaped Velcro (423) via the fur-shaped Velcro (4322).

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