Folding chair

Abstract

The utility model discloses a folding chair which comprises a back plate, two side plates respectively connected to two sides of the back plate, a seat plate rotatably connected between the two side plates and a locking structure capable of locking the seat plate on the two side plates, each side plate comprises a front plate, a front side plate, a rear side plate and a fixing plate which are sequentially connected, the fixing plate is connected to the back plate, and the locking structure is arranged on the back plate. The two front plates are connected with each other and support the seat plate, a first rotary connecting structure is arranged between the front plates and the front side plates, a second rotary connecting structure is arranged between the front side plates and the rear side plates, and a third rotary connecting structure is arranged between the rear side plates and the fixing plate, so that the front side plates and the rear side plates can be folded and close to the back plate; the first rotary connecting structure or the second rotary connecting structure or the third rotary connecting structure is a foldable flexible part; by the adoption of the structure, the flexible part machined according to the plastic reduction principle replaces a hinge, the number of machined parts can be effectively reduced, assembly steps can be effectively reduced, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chairs, in particular to a folding chair. Background Art

[0002] A folding chair is a chair with a folding and retracting function. It is easy to move and can be folded to save space. It is deeply loved by users. However, the folding chairs on the market are often kept in an open state by the friction of the folding connection structure or by a human body sitting on the chair. The chair generally does not have a locking structure to keep it in an open state. Most children are lively and active. When children are moving on the folding chair, the overall structure of the folding chair becomes unstable because it is not locked. The folding chair is prone to shaking and causing the child to fall, affecting the safety of use.

[0003] The applicant disclosed a folding chair in a patent with authorization announcement number CN220236500U. The panels in the folding chair are locked to each other through various locking structures to prevent the folding chair from shaking and causing children to fall, thereby improving safety. However, the folding chair uses a hinge structure to connect the positions where rotation is required, which is complex to process and requires many assembly steps. Utility Model Content

[0004] In view of this, an object of the present utility model is to provide a folding chair, which can reduce the number of processed parts and assembly steps by replacing hinge connections with flexible parts.

[0005] The technical solution adopted by the utility model to solve its technical problems is to provide a folding chair, comprising a back panel, two side panels respectively connected at both sides of the back panel, a seat panel rotatably connected between the two side panels, and a locking structure capable of locking the seat panel on the two side panels, the side panels all comprising a front panel, a front side panel, a rear side panel and a fixed panel connected in sequence, the fixed panel being connected to the back panel, the two front panels being connected to each other and supporting the seat panel, a first rotating connection structure being provided between the front panel and the front side panel, a second rotating connection structure being provided between the front side panel and the rear side panel, and a third rotating connection structure being provided between the rear side panel and the fixed panel so that the front side panel and the rear side panel can be folded close to the back panel, and the first rotating connection structure or the second rotating connection structure or the third rotating connection structure is a foldable flexible portion.

[0006] As a further improvement of the present invention, the first rotating connection structure, the second rotating connection structure and the third rotating connection structure are all foldable flexible parts, and the front plate, the front side plate, the rear side plate and the fixed plate are an integrated structure.

[0007] As a further improvement of the utility model, one of the front plates is provided with a plug hole, and the other front plate is provided with a second buckle for being clipped onto the plug hole so as to connect the two front plates to each other.

[0008] As a further improvement of the utility model, the locking structure includes a slot arranged on the seat plate and an elastic lock buckle arranged on the front plate, the elastic lock buckle is provided with a first buckle inserted into the slot, and the front plate is provided with an unlocking through hole for inserting a finger so that the user can drive the elastic lock buckle to deform, thereby disengaging the first buckle from the slot to unlock the seat plate.

[0009] As a further improvement of the present invention, the folding chair also includes a support plate, and at least two connecting protrusions are provided on the two front side panels. The connecting protrusions on the two front side panels correspond to each other, and the support plate can be detachably connected to different connecting protrusions on the two front side panels to adjust the distance between the support plate and the back panel.

[0010] As a further improvement of the utility model, the back plate is provided with a folding placement block, and the support plate is detachably connected to the folding placement block.

[0011] As a further improvement of the utility model, a connecting boss is provided on the rear surface of the back plate, an anti-slip column with a diameter larger than the diameter of the connecting boss is provided at the free end of the connecting boss, a mounting through hole with a diameter larger than the diameter of the anti-slip column and an anti-slip through hole connected to the mounting through hole are provided on the fixed plate, and the diameter of the anti-slip through hole is smaller than the diameter of the anti-slip column and larger than the diameter of the connecting boss.

[0012] As a further improvement of the utility model, the connecting boss, the anti-slip column and the back plate are integrated into an integrated structure.

[0013] As a further improvement of the utility model, the anti-drop through hole is located below the mounting through hole.

[0014] The beneficial effects of the utility model are at least:

[0015] 1. By replacing the hinge with a flexible part processed by the principle of plastic reduction, the number of processed parts and assembly steps can be effectively reduced, and the cost can be reduced. By setting the first rotating connection structure, the second rotating connection structure and the third rotating connection structure as flexible parts, the entire side panel can be processed at one time. During assembly, it is only necessary to install the fixed plate on the back plate, and then install the locking structure and the seat plate to complete the entire installation. The prior art uses hinges for installation, and hinges are required for installation when the front plate and the front side plate are connected, and hinges are required for installation when the front side plate and the rear side plate are connected. Hinge installation is required when the rear side plate and the back plate or the rear side plate and the fixed plate are connected, which is very cumbersome.

[0016] 2. The self-locking function can be achieved by setting the elastic lock buckle. The first buckle will be disengaged from the slot only when the user drives the elastic lock buckle to deform elastically, thereby preventing the first buckle from being disengaged when a child shakes on the chair, thereby improving stability and safety.

[0017] 3. The two front panels can be locked by connecting the second buckle to the socket. Of course, the two front panels can also be made into one piece. Since the two front panels are basically parallel to the back panel when the folding chair is folded, locking or making the two front panels into one piece will not affect the use, but can improve the stability of the folding chair.

[0018] 4. The support plate can be installed on different connecting protrusions to adjust the position of the support plate and the back plate, which can be suitable for people of different body shapes. When the support plate is not needed, the support plate can be installed on the back side of the back plate, which is convenient and easy to use. The fixing plate can prevent the fixing plate from falling out while ensuring the stability of the connection by connecting the anti-falling column to the anti-falling through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram and a partial enlarged diagram of the utility model when it is opened;

[0020] Figure 2 It is a schematic diagram of the structure of the utility model when folded;

[0021] Figure 3 It is a partial enlarged view of the locking structure area when the utility model is opened;

[0022] Figure 4 It is an exploded view of the structure of the utility model when it is opened;

[0023] Figure 5 It is a schematic diagram of the structure of the utility model when it is opened from another angle;

[0024] Figure 6 It is a structural exploded view and a partial enlarged view of the utility model when it is opened. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0026] Reference Figure 1-6The utility model proposes a folding chair, comprising a back panel 1, two side panels 2 respectively connected at both sides of the back panel 1, a seat panel 3 rotatably connected between the two side panels 2, and a locking structure 4 capable of locking the seat panel 3 on the two side panels 2, the side panels 2 each comprising a front panel 21, a front side panel 22, a rear side panel 23 and a fixed panel 24 connected in sequence, the fixed panel 24 being connected to the back panel 1, the two front panels 21 being connected to each other and supporting the seat panel 3, a first rotating connection structure 25 being provided between the front panel 21 and the front side panel 22, a second rotating connection structure 26 being provided between the front side panel 22 and the rear side panel 23, and a third rotating connection structure 27 being provided between the rear side panel 23 and the fixed panel 24 so that the front side panel 22 and the rear side panel 23 can be folded close to the back panel 1, and the first rotating connection structure 25 or the second rotating connection structure 26 or the third rotating connection structure 27 is a foldable flexible portion.

[0027] Replacing hinges with flexible parts processed by the principle of plastic reduction can effectively reduce the number of processed parts and assembly steps, thereby reducing costs. The principle of plastic reduction specifically refers to designing the wall thickness of those rotating connection positions to be relatively thin during the injection molding process, or combining hard plastic and soft elastic materials in the same component. The soft part serves as the hinge functional area, providing the required flexibility and sealing, thereby realizing the flexible function of the hinge and reducing the use of plastic materials.

[0028] Reference Figure 1 and Figure 4 The first rotating connection structure 25, the second rotating connection structure 26 and the third rotating connection structure 27 are all foldable flexible parts, and the front plate 21, the front side plate 22, the rear side plate 23 and the fixed plate 24 are an integrated structure; the first rotating connection structure 25, the second rotating connection structure 26 and the third rotating connection structure 27 are all set as flexible parts, so that the entire side plate 2 can be processed at one time. During assembly, it is only necessary to install the fixed plate 24 on the back plate 1, and then install the locking structure 4 and the seat plate 3 to achieve the entire installation. The prior art uses hinges for installation. When the front plate 21 and the front side plate 22 are connected, hinges are required for installation, when the front side plate 22 and the rear side plate 23 are connected, hinges are required for installation, and when the rear side plate 23 and the back plate 1 or the rear side plate 23 and the fixed plate 24 are connected, hinges are required for installation, which is very cumbersome.

[0029] As another embodiment of the present utility model, the front plate 21, the front side plate 22 and the rear side plate 23 are an integrated structure, and the fixing plate 24 and the back plate 1 are an integrated structure.

[0030] As another embodiment of the present invention, refer to Figure 3, the two front panels 21 are an integral structure; since the two front panels 21 are substantially parallel to the back panel 1 when the folding chair is folded, locking or integrating the two front panels 21 will not affect the use, but can improve the stability of the folding chair.

[0031] Reference Figure 3 One of the front panels 21 is provided with a socket 213, and the other front panel 21 is provided with a second buckle 214 for snapping onto the socket 213 to connect the two front panels 21 to each other; by snapping the second buckle 214 onto the socket 213, the two front panels 21 can be locked.

[0032] Reference Figure 3 The locking structure 4 includes a slot 31 arranged on the seat plate 3 and an elastic lock buckle 211 arranged on the front plate 21. The elastic lock buckle 211 is provided with a first buckle 2111 inserted into the slot 31. The front plate 21 is provided with an unlocking through hole 212 for inserting a finger so that the user can drive the elastic lock buckle 211 to deform, thereby disengaging the first buckle 2111 from the slot 31 to unlock the seat plate 3; through the setting of the elastic lock buckle 211, the self-locking function can be achieved. Only when the user drives the elastic lock buckle 211 to elastically deform will the first buckle 2111 be disengaged from the slot 31, thereby preventing the first buckle 2111 from being disengaged when a child shakes on the chair, thereby improving stability and safety.

[0033] Reference Figure 1 The folding chair also includes a support plate 5, and at least two connecting protrusions 221 are provided on the two front side panels 22. The connecting protrusions 221 on the two front side panels 22 correspond to each other. The support plate 5 can be detachably connected to different connecting protrusions 221 on the two front side panels 22 to adjust the distance between the support plate 5 and the back panel 1; the support plate 5 can be installed on different connecting protrusions 221 to adjust the position of the support plate 5 and the back panel 1, which can be suitable for people of different body shapes. Specifically, when the support plate 5 has only one connecting hole connected to the connecting protrusion 221, the connection protrusion 221 is set to more than two to achieve adjustment. When the support plate 5 has two connecting holes, the connection protrusion 221 is set to more than three, and it is adjusted according to actual needs.

[0034] Reference Figure 1 and Figure 2 , characterized in that the back panel 1 is provided with a folding placement block 11, and the support plate 5 is detachably connected to the folding placement block 11; when the support plate 5 is not needed, the support plate 5 can be installed on the rear side of the back panel 1, which is convenient and easy to use.

[0035] Reference Figure 6A connecting boss 12 is provided on the rear surface of the back plate 1, and an anti-slip column 13 with a diameter larger than that of the connecting boss 12 is provided at the free end of the connecting boss 12. A mounting through hole 241 with a diameter larger than that of the anti-slip column 13 and an anti-slip through hole 242 connected to the mounting through hole 241 are provided on the fixing plate 24, and the diameter of the anti-slip through hole 242 is smaller than the diameter of the anti-slip column 13 and larger than the diameter of the connecting boss 12.

[0036] By providing a connecting boss 12 on the rear surface of the back plate 1, and adding a larger diameter anti-dropping column 13 at its free end, and correspondingly providing a mounting through hole 241 and an anti-dropping through hole 242 on the fixing plate 24, a unique and efficient connection mechanism is formed. This design makes the installation process of the fixing plate 24 both intuitive and simple. It is only necessary to align the anti-dropping column 13 and pass it through the mounting through hole 241, and then move the connecting boss 12 to the anti-dropping through hole 242 to complete the installation. This structured connection method greatly simplifies the assembly steps and improves the installation efficiency. At the same time, it also ensures the stability of the connection between the fixing plate 24 and the back plate 1; it realizes the function of preventing the fixing plate 24 from accidentally falling off. Due to the straightness of the anti-dropping through hole 242 The diameter is smaller than the diameter of the anti-slip column 13 but larger than the diameter of the connecting boss 12. When the fixing plate 24 tries to move away from the back plate 1, the anti-slip column 13 will be clamped on the inner wall of the anti-slip through hole 242 to form a strong barrier, which effectively prevents the fixing plate 24 from loosening or falling off due to vibration, impact or other external forces during use. This anti-slip design greatly enhances the safety and reliability of the overall structure. Although the anti-slip design ensures that the fixing plate 24 is firmly fixed, when maintenance or replacement is required, due to the clear connection structure, the fixing plate 24 can be easily removed from the back plate 1 by simply reversing the operation without additional tools or complicated steps, which greatly improves the maintainability of the equipment and reduces maintenance costs.

[0037] Reference Figure 6 , the connecting boss 12, the anti-slip column 13 and the back plate 1 are an integrated structure.

[0038] Reference Figure 6 The anti-drop through hole 242 is located below the mounting through hole 241. When a human body sits on the seat plate 3, the folding chair will be subjected to a downward force, especially because the seat plate 3 is rotatably connected between the two side plates 2. Therefore, the fixing plate 24 will be subjected to a downward force. Removing the fixing plate 24 requires upward movement relative to the back plate 1, thereby further improving stability.

Claims

1. A folding chair, characterized in that: The invention comprises a back plate (1), two side plates (2) respectively connected to both sides of the back plate (1), a seat plate (3) rotatably connected between the two side plates (2), and a locking structure (4) capable of locking the seat plate (3) to the two side plates (2), wherein the side plates (2) each comprise a front plate (21), a front side plate (22), a rear side plate (23) and a fixing plate (24) connected in sequence, wherein the fixing plate (24) is connected to the back plate (1), the two front plates (21) are connected to each other and support the seat plate (3), and the front plates (21) are connected to the back plate (1), and the two side plates (21) are connected to each other and support the seat plate (3). A first rotating connection structure (25) is provided between the front side plate (21) and the front side plate (22), a second rotating connection structure (26) is provided between the front side plate (22) and the rear side plate (23), and a third rotating connection structure (27) is provided between the rear side plate (23) and the fixed plate (24), so that the front side plate (22) and the rear side plate (23) can be folded close to the back plate (1), and the first rotating connection structure (25) or the second rotating connection structure (26) or the third rotating connection structure (27) is a foldable flexible part.

2. A folding chair according to claim 1, characterized in that: The first rotating connection structure (25), the second rotating connection structure (26) and the third rotating connection structure (27) are all foldable flexible parts, and the front plate (21), the front side plate (22), the rear side plate (23) and the fixed plate (24) are an integrated structure.

3. A folding chair according to claim 1, characterized in that: One of the front plates (21) is provided with a plug hole (213), and the other front plate (21) is provided with a second buckle (214) for being snapped onto the plug hole (213) so that the two front plates (21) are connected to each other.

4. A folding chair according to claim 1, characterized in that: The locking structure (4) comprises a slot (31) arranged on the seat plate (3) and an elastic lock buckle (211) arranged on the front plate (21); the elastic lock buckle (211) is provided with a first buckle (2111) inserted into the slot (31); the front plate (21) is provided with an unlocking through hole (212) for inserting a finger so that a user can drive the elastic lock buckle (211) to deform, thereby causing the first buckle (2111) to disengage from the slot (31) to unlock the seat plate (3).

5. A folding chair according to claim 1, characterized in that: The folding chair also includes a support plate (5), at least two connection protrusions (221) are provided on the two front side plates (22), the connection protrusions (221) on the two front side plates (22) correspond to each other, and the support plate (5) can be detachably connected to different connection protrusions (221) on the two front side plates (22) so as to adjust the distance between the support plate (5) and the back plate (1).

6. A folding chair according to claim 5, characterized in that: The back plate (1) is provided with a folding placement block (11), and the support plate (5) is detachably connected to the folding placement block (11).

7. A folding chair according to claim 1, characterized in that: The back surface of the back plate (1) is provided with a connecting boss (12), the free end of the connecting boss (12) is provided with an anti-slip column (13) whose diameter is larger than the diameter of the connecting boss (12), the fixing plate (24) is provided with a mounting through hole (241) whose diameter is larger than the diameter of the anti-slip column (13), and an anti-slip through hole (242) connected to the mounting through hole (241), the diameter of the anti-slip through hole (242) being smaller than the diameter of the anti-slip column (13) and larger than the diameter of the connecting boss (12).

8. A folding chair according to claim 7, characterized in that: The connecting convex column (12), the anti-slip column (13) and the back plate (1) are an integrated structure.

9. The folding chair according to claim 7, characterized in that: The anti-drop through hole (242) is located below the mounting through hole (241).

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